{"id":4673,"date":"2026-01-23T09:21:56","date_gmt":"2026-01-23T09:21:56","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=4673"},"modified":"2026-01-23T09:21:58","modified_gmt":"2026-01-23T09:21:58","slug":"step-by-step-hdi-pcb-blind-and-buried-via-process","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/cs\/step-by-step-hdi-pcb-blind-and-buried-via-process\/","title":{"rendered":"Proces slep\u00fdch a zasypan\u00fdch pr\u016fchodek HDI PCB krok za krokem"},"content":{"rendered":"<p>N\u00ed\u017ee je uveden anglick\u00fd p\u0159eklad. Pou\u017eil jsem jasnou, jednoduchou formulaci a z\u00e1kladn\u00ed spojovac\u00ed slova (a, ale, tak, pak, proto\u017ee). Odborn\u00e9 term\u00edny a \u010d\u00edsla jsem zachoval p\u0159esn\u00e1. Text je dlouh\u00fd (p\u0159es 1800 slov), jak jste po\u017eadovali.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Z\u00e1kladn\u00ed postup pro v\u00fdrobu desek HDI se slep\u00fdmi a zakopan\u00fdmi pr\u016fchodkami<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. P\u0159ehled<\/h2>\n\n\n\n<p>HDI je zkratka pro High Density Interconnect. Jedn\u00e1 se o technologii desek plo\u0161n\u00fdch spoj\u016f, kter\u00e1 vznikla koncem 20. stolet\u00ed. Kl\u00ed\u010dovou v\u00fdhodou je pou\u017eit\u00ed laserov\u00e9ho vrt\u00e1n\u00ed. Tradi\u010dn\u00ed mechanick\u00e9 vrt\u00e1n\u00ed je omezeno vrt\u00e1ky. Kdy\u017e velikost otvoru dos\u00e1hne 0,15 mm, n\u00e1klady se velmi zv\u00fd\u0161\u00ed a optimalizace je obt\u00ed\u017en\u00e1. Laserov\u00e9 otvory HDI mohou m\u00edt velikost pouze 3-5 mil (0,076-0,127 mm). \u0160\u00ed\u0159ka stopy m\u016f\u017ee b\u00fdt 3-4 mil (0,076-0,10 mm). Velikost podlo\u017eek se v\u00fdrazn\u011b zmen\u0161uje. Na stejnou plochu se vejde v\u00edce stop. To umo\u017e\u0148uje vysokou hustotu propojen\u00ed.<\/p>\n\n\n\n<p>HDI umo\u017e\u0148uje konstrukt\u00e9r\u016fm pou\u017e\u00edvat hust\u00e9 bal\u00ed\u010dky, jako je nap\u0159. <a href=\"https:\/\/flj-pcb.com\/cs\/pcb-assembly\/bga-assmebly\/\" data-type=\"page\" data-id=\"1921\">BGA<\/a> a QFP. Pro BGA s rozte\u010d\u00ed 0,5 je nyn\u00ed b\u011b\u017en\u00e9 HDI prvn\u00ed \u00farovn\u011b. Vzhledem k tomu, \u017ee se sm\u011brov\u00e1n\u00ed BGA p\u0159esouv\u00e1 z rohov\u00e9ho \u00faniku na st\u0159edov\u00fd \u00fanik, prvn\u00ed \u00farove\u0148 <a href=\"https:\/\/flj-pcb.com\/cs\/pcb-manufacturer\/hdi-pcb\/\" data-type=\"page\" data-id=\"1915\">HDI<\/a> ji\u017e nem\u016f\u017ee uspokojit n\u011bkter\u00e9 pot\u0159eby. HDI druh\u00e9 \u00farovn\u011b se st\u00e1v\u00e1 st\u0159edem z\u00e1jmu v\u00fdzkumu, v\u00fdvoje a v\u00fdroby. Laserov\u00e9 slep\u00e9 pr\u016fchodky HDI prvn\u00ed \u00farovn\u011b spojuj\u00ed pouze povrch s p\u0159ilehlou vnit\u0159n\u00ed vrstvou. HDI druh\u00e9 \u00farovn\u011b m\u016f\u017ee vrtat od povrchu a\u017e po t\u0159et\u00ed vrstvu nebo od povrchu p\u0159es druhou vrstvu a\u017e po t\u0159et\u00ed vrstvu. To je mnohem obt\u00ed\u017en\u011bj\u0161\u00ed ne\u017e HDI prvn\u00ed \u00farovn\u011b.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Materi\u00e1ly<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 Typy materi\u00e1l\u016f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u011bd\u011bn\u00e1 f\u00f3lie: z\u00e1kladn\u00ed materi\u00e1l, ze kter\u00e9ho se vyr\u00e1b\u011bj\u00ed vodiv\u00e9 vzory.<\/li>\n\n\n\n<li>J\u00e1dro (CORE): p\u00e1te\u0159 desky. Jedn\u00e1 se o oboustrann\u011b m\u011bd\u00ed pl\u00e1tovanou desku, kter\u00e1 se pou\u017e\u00edv\u00e1 k vytvo\u0159en\u00ed vnit\u0159n\u00edch vrstev.<\/li>\n\n\n\n<li>Prepreg: polotvrd\u00e1 prysky\u0159i\u010dn\u00e1 f\u00f3lie pou\u017e\u00edvan\u00e1 jako lepidlo pro v\u00edcevrstv\u00e9 desky a jako izolace.<\/li>\n\n\n\n<li>Inkoust pro p\u00e1jec\u00ed masku: pou\u017e\u00edv\u00e1 se pro p\u00e1jec\u00ed masku, izolaci a ochranu proti korozi.<\/li>\n\n\n\n<li>Legenda (s\u00edtotisk): pou\u017e\u00edv\u00e1 se pro zna\u010den\u00ed a \u0161t\u00edtky.<\/li>\n\n\n\n<li>Materi\u00e1ly pro povrchovou \u00fapravu: zahrnuj\u00ed slitiny c\u00ednu a olova, nikl-zlato, st\u0159\u00edbro, <a href=\"https:\/\/flj-pcb.com\/cs\/pcb-manufacturer\/osp-pcb\/\" data-type=\"page\" data-id=\"2386\">OSP<\/a>, a dal\u0161\u00ed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 Lamin\u00e1tov\u00e9 izola\u010dn\u00ed materi\u00e1ly<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">2.2.1 B\u011b\u017en\u00e9 lamin\u00e1ty<\/h4>\n\n\n\n<p>Mezi b\u011b\u017en\u00e9 materi\u00e1ly s vysokou Tg pat\u0159\u00ed MICA\/EG-150T, SYST\/S1141, Grace\/MTC-97 a HITACHI\/MCL-HD-67. Tyto materi\u00e1ly se pou\u017e\u00edvaj\u00ed v p\u0159\u00edpad\u011b pot\u0159eby vy\u0161\u0161\u00ed tepeln\u00e9 odolnosti.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.2.2 Izola\u010dn\u00ed materi\u00e1ly specifick\u00e9 pro HDI<\/h4>\n\n\n\n<p>B\u011b\u017en\u00e9 typy a specifikace:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Materi\u00e1ly RCC: 80T18, 60T12, 65T12, 80T12, 60T18.<\/li>\n\n\n\n<li>fr4 (LDP): 1080, 106.<\/li>\n<\/ul>\n\n\n\n<p>Pozn\u00e1mka: Pou\u017eil jsem \u201cfr4\u201d pro FR-4, jak preferujete.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 Speci\u00e1ln\u00ed materi\u00e1l: Vysv\u011btlen\u00ed RCC<\/h3>\n\n\n\n<p>RCC znamen\u00e1 m\u011b\u010f pota\u017een\u00e1 prysky\u0159ic\u00ed. Jedn\u00e1 se o m\u011bd\u011bnou f\u00f3lii pota\u017eenou speci\u00e1ln\u00ed prysky\u0159i\u010dnou vrstvou. F\u00f3lie pln\u011b pokr\u00fdv\u00e1 vnit\u0159n\u00ed stopy a funguje jako izolace. RCC se vyr\u00e1b\u00ed p\u0159edev\u0161\u00edm ve dvou typech: Stupe\u0148 B (Mitsui) a stupe\u0148 B+C (Polyclad).<\/p>\n\n\n\n<p>Kl\u00ed\u010dov\u00e9 vlastnosti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u017d\u00e1dn\u00e1 vrstva sklen\u011bn\u00fdch vl\u00e1ken v prysky\u0159i\u010dn\u00e9 f\u00f3lii. To usnad\u0148uje tvorbu mikrovl\u00e1ken laserem nebo plazmou.<\/li>\n\n\n\n<li>Tenk\u00e1 dielektrick\u00e1 vrstva a vysok\u00e1 pevnost v odlupov\u00e1n\u00ed.<\/li>\n\n\n\n<li>Dobr\u00e1 hou\u017eevnatost a hladk\u00fd povrch, vhodn\u00e9 pro lept\u00e1n\u00ed velmi \u00fazk\u00fdch stop.<\/li>\n\n\n\n<li>Laserov\u00e9 vrt\u00e1n\u00ed pro HDI se \u010dasto zam\u011b\u0159uje na RCC. Laserov\u00e9 otvory maj\u00ed tvar obr\u00e1cen\u00e9ho lichob\u011b\u017en\u00edku, nikoli v\u00e1lce jako mechanick\u00e9 otvory. Typick\u00e1 velikost otvoru je 0,076-0,10 mm.<\/li>\n<\/ul>\n\n\n\n<p>Ostatn\u00ed materi\u00e1ly HDI (j\u00e1dro, prepreg, m\u011bd\u011bn\u00e9 f\u00f3lie) nejsou speci\u00e1ln\u00ed. Obvykle je tlou\u0161\u0165ka vnit\u0159n\u00ed m\u011bdi tenk\u00e1: vnit\u0159n\u00ed vrstvy 1 oz, vn\u011bj\u0161\u00ed vrstvy 0,5 oz z\u00e1kladn\u00ed m\u011bdi pokoven\u00e9 na 1 oz. Cel\u00e1 deska je ten\u010d\u00ed. Proto\u017ee RCC neobsahuje sklen\u011bn\u00e1 vl\u00e1kna, jej\u00ed tvrdost a pevnost jsou ni\u017e\u0161\u00ed ne\u017e u jin\u00fdch desek plo\u0161n\u00fdch spoj\u016f stejn\u00e9 tlou\u0161\u0165ky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. V\u00fdrobn\u00ed proces (p\u0159\u00edklad: osmivrstv\u00e1 deska 2+4+2)<\/h2>\n\n\n\n<p>N\u00ed\u017ee uv\u00e1d\u00edm hlavn\u00ed kroky a kl\u00ed\u010dov\u00e9 body. Pou\u017e\u00edv\u00e1m jednoduch\u00e1 slova a jasn\u00e9 po\u0159ad\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u0158ez\u00e1n\u00ed surovin (CUT)<\/h3>\n\n\n\n<p>P\u0159i \u0159ez\u00e1n\u00ed se velk\u00e9 m\u011bd\u011bn\u00e9 plechy rozm\u011brov\u011b p\u0159izp\u016fsob\u00ed v\u00fdrobn\u00edm stroj\u016fm. Mus\u00ed b\u00fdt jasn\u00e9 t\u0159i z\u00e1kladn\u00ed pojmy:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JEDNOTKA: jedna konstruk\u010dn\u00ed jednotka v rozvr\u017een\u00ed z\u00e1kazn\u00edka.<\/li>\n\n\n\n<li>SET: n\u011bkolik spojen\u00fdch JEDNOTEK, v\u010detn\u011b procesn\u00ed hrany a n\u00e1stroj\u016f.<\/li>\n\n\n\n<li>PANEL: n\u011bkolik sad spojen\u00fdch dohromady s okraji n\u00e1stroj\u016f, kter\u00e9 tvo\u0159\u00ed v\u00fdrobn\u00ed panel. B\u011b\u017en\u011b nakupovan\u00e9 surov\u00e9 rozm\u011bry jsou 36,5 \u00d7 48,5 palce, 40,5 \u00d7 48,5 palce a 42,5 \u00d7 48,5 palce. V\u00fdt\u011b\u017enost z\u00e1vis\u00ed na konstrukci a pou\u017eit\u00ed panelu.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"532\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/CUT.webp\" alt=\"CUT\" class=\"wp-image-4675\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/CUT.webp 800w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/CUT-300x200.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/CUT-768x511.webp 768w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/CUT-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 Proces such\u00e9 vnit\u0159n\u00ed vrstvy (INNER DRY FILM)<\/h3>\n\n\n\n<p>Krok vnit\u0159n\u00ed such\u00e9 f\u00f3lie p\u0159en\u00e1\u0161\u00ed vzory vnit\u0159n\u00ed vrstvy. Kroky zahrnuj\u00ed laminov\u00e1n\u00ed fotorezistov\u00e9 f\u00f3lie, exponov\u00e1n\u00ed, vyvol\u00e1v\u00e1n\u00ed, lept\u00e1n\u00ed a odstra\u0148ov\u00e1n\u00ed:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Lamin\u00e1t: nalepte sv\u011btlocitlivou f\u00f3lii na m\u011b\u010f. Sv\u011btlo vytvrd\u00ed exponovan\u00e9 \u010d\u00e1sti a vytvo\u0159\u00ed ochrannou vrstvu.<\/li>\n\n\n\n<li>Expozice a vyvol\u00e1n\u00ed: exponujte film. Osv\u011btlen\u00e9 \u010d\u00e1sti ztvrdnou. Tmav\u00e9 \u010d\u00e1sti z\u016fstanou m\u011bkk\u00e9. Vyvol\u00e1n\u00edm se odstran\u00ed m\u011bkk\u00fd film.<\/li>\n\n\n\n<li>Lept\u00e1n\u00ed a odizolov\u00e1n\u00ed: lept\u00e1n\u00ed obna\u017een\u00e9 m\u011bdi. Pot\u00e9 odstra\u0148te ztvrdlou ochrannou f\u00f3lii. Vzniknou stopy vnit\u0159n\u00ed vrstvy.<\/li>\n<\/ol>\n\n\n\n<p>Tipy pro n\u00e1vrh: kontrolujte minim\u00e1ln\u00ed \u0161\u00ed\u0159ku stopy, rozte\u010d a rovnom\u011brnost. Pokud jsou rozestupy p\u0159\u00edli\u0161 mal\u00e9, m\u016f\u017ee p\u0159i laminov\u00e1n\u00ed doj\u00edt ke zkratu. Pokud jsou stopy p\u0159\u00edli\u0161 tenk\u00e9, m\u016f\u017ee doj\u00edt k poru\u0161e p\u0159ilnavosti f\u00f3lie a stopy se otev\u0159ou. Ponechte si bezpe\u010dn\u00e9 rezervy pro v\u00fdrobu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.3 \u010cern\u00e1 nebo hn\u011bd\u00e1 oxidace (\u010cERN\u00c1 OXIDACE)<\/h3>\n\n\n\n<p>Po zhotoven\u00ed vnit\u0159n\u00edch stop prove\u010fte p\u0159ed laminov\u00e1n\u00edm \u010dernou nebo hn\u011bdou oxidaci. Hlavn\u00ed c\u00edle:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Odstra\u0148te olej a ne\u010distoty z m\u011bd\u011bn\u00e9ho povrchu.<\/li>\n\n\n\n<li>Zv\u011bt\u0161ete plochu povrchu m\u011bdi, abyste zlep\u0161ili vazbu s prysky\u0159ic\u00ed.<\/li>\n\n\n\n<li>P\u0159eveden\u00ed nepol\u00e1rn\u00edho povrchu m\u011bdi na pol\u00e1rn\u00ed CuO a Cu\u2082O pro zlep\u0161en\u00ed chemick\u00e9 vazby.<\/li>\n\n\n\n<li>Zlep\u0161uje odolnost proti vlhkosti p\u0159i vysok\u00fdch teplot\u00e1ch a sni\u017euje riziko delaminace mezi m\u011bd\u00ed a prysky\u0159ic\u00ed.<\/li>\n<\/ol>\n\n\n\n<p>Pokud je hlavn\u00edm produktem Cu\u2082O, naz\u00fdv\u00e1 se hn\u011bd\u00e1 oxidace (\u010derven\u00e1 barva). Pokud je hlavn\u00edm produktem CuO, naz\u00fdv\u00e1 se \u010dern\u00e1 oxidace (\u010dern\u00e1 barva).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.4 Laminace (lisov\u00e1n\u00ed)<\/h3>\n\n\n\n<p>Laminov\u00e1n\u00ed spojuje v\u0161echny vrstvy pomoc\u00ed p\u0159edpregam\u00e1tu stupn\u011b B. Hlavn\u00ed kroky:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Stohov\u00e1n\u00ed: uspo\u0159\u00e1dejte m\u011bd\u011bn\u00e9 f\u00f3lie, prepreg, vnit\u0159n\u00ed j\u00e1dra, nerezov\u00e9 desky, separa\u010dn\u00ed desky, kraftov\u00fd pap\u00edr a vn\u011bj\u0161\u00ed lisovac\u00ed desky. U desek se \u0161esti a v\u00edce vrstvami je t\u0159eba prov\u00e9st p\u0159edstiskov\u00e1n\u00ed.<\/li>\n\n\n\n<li>Lisov\u00e1n\u00ed za tepla: vlo\u017ete stoh do vakuov\u00e9ho lisu za tepla. Teplo roztav\u00ed prysky\u0159ici, spoj\u00ed stoh a vypln\u00ed dutiny.<\/li>\n<\/ol>\n\n\n\n<p>Tipy: laminov\u00e1n\u00ed mus\u00ed b\u00fdt symetrick\u00e9. Pokud nen\u00ed nap\u011bt\u00ed na obou stran\u00e1ch vyv\u00e1\u017een\u00e9, doch\u00e1z\u00ed k deformaci. Kontrolujte rozlo\u017een\u00ed m\u011bdi, abyste zabr\u00e1nili rozd\u00edl\u016fm v toku prysky\u0159ice, kter\u00e9 zp\u016fsobuj\u00ed nerovnom\u011brnou tlou\u0161\u0165ku. Dop\u0159edu napl\u00e1nujte slep\u00e9 a zakopan\u00e9 pr\u016fchodky.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/PRESSING.webp\" alt=\"PRESSING\" class=\"wp-image-4677\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/PRESSING.webp 800w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/PRESSING-300x225.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/PRESSING-768x576.webp 768w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/PRESSING-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3.5 Vrt\u00e1n\u00ed slep\u00fdch a zakopan\u00fdch pr\u016fchodek (DRILLING)<\/h3>\n\n\n\n<p>P\u0159i v\u00fdrob\u011b desek plo\u0161n\u00fdch spoj\u016f je mechanick\u00e9 vrt\u00e1n\u00ed hlavn\u00ed metodou pro pr\u016fchoz\u00ed otvory v\u011bt\u0161\u00ed ne\u017e p\u0159ibli\u017en\u011b 8 mil. Mechanick\u00e9 vrt\u00e1n\u00ed ur\u010duje m\u00edsta, kde nelze k\u0159\u00ed\u017eit slep\u00e9 a zakopan\u00e9 pr\u016fchodky. U p\u0159\u00edkladu osmivrstv\u00e9 desky m\u016f\u017eete sou\u010dasn\u011b vytvo\u0159it zakopan\u00e9 pr\u016fchodky pro vrstvy 3-6, zaslepen\u00e9 pr\u016fchodky pro vrstvy 1-2 a zaslepen\u00e9 pr\u016fchodky pro vrstvy 7-8. V p\u0159\u00edpad\u011b, \u017ee se jedn\u00e1 o osmivrstvou desku, je mo\u017en\u00e9 pou\u017e\u00edt mechanick\u00e9 vrt\u00e1n\u00ed. Nem\u016f\u017eete v\u0161ak navrhnout k\u0159\u00ed\u017e\u00edc\u00ed se zakopan\u00e9 pr\u016fchodky jako 3-5 a 4-6, proto\u017ee je nelze vytvo\u0159it. Asymetrick\u00e9 vzory zakopan\u00fdch pr\u016fchodek (jako 3-5 a 4-6) v\u00fdrazn\u011b zvy\u0161uj\u00ed obt\u00ed\u017enost a zmetkovitost. N\u00e1klady mohou b\u00fdt v\u00edce ne\u017e \u0161estin\u00e1sobkem n\u00e1klad\u016f na symetrick\u00e9 zakopan\u00e9 pr\u016fchodky.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/DRILLING.webp\" alt=\"DRILLING\" class=\"wp-image-4676\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/DRILLING.webp 800w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/DRILLING-300x200.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/DRILLING-768x512.webp 768w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/DRILLING-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3.6 Nan\u00e1\u0161en\u00ed a pokovov\u00e1n\u00ed m\u011bdi (metalizac\u00ed)<\/h3>\n\n\n\n<p>Metalizace p\u0159es pr\u016fchodku pokr\u00fdv\u00e1 st\u011bnu vyvrtan\u00e9ho otvoru m\u011bd\u00ed, kter\u00e1 je rovnom\u011brn\u00e1 a tepeln\u011b odoln\u00e1. T\u0159i kroky:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Odstra\u0148te zbytky vrt\u00e1ku.<\/li>\n\n\n\n<li>Chemick\u00e9 nan\u00e1\u0161en\u00ed m\u011bdi.<\/li>\n\n\n\n<li>Celoplo\u0161n\u00e9 galvanick\u00e9 pokovov\u00e1n\u00ed pro zes\u00edlen\u00ed m\u011bdi.<\/li>\n<\/ul>\n\n\n\n<p>Kl\u00ed\u010dov\u00fd parametr: pom\u011br stran (tlou\u0161\u0165ka desky k pr\u016fm\u011bru otvoru). S rostouc\u00ed tlou\u0161\u0165kou desky a klesaj\u00edc\u00edm pr\u016fm\u011brem otvoru se chemik\u00e1lie nemohou snadno dostat do st\u0159edu otvoru. To m\u016f\u017ee zp\u016fsobit, \u017ee pokoven\u00ed bude ve st\u0159edu tenk\u00e9 a vzniknou mikrootev\u0159en\u00e9 vady. Konstrukt\u00e9\u0159i mus\u00ed zn\u00e1t procesn\u00ed limity v\u00fdrobny desek. Jak slep\u00e9\/zapu\u0161t\u011bn\u00e9 pr\u016fchodky, tak pr\u016fchoz\u00ed otvory mus\u00ed br\u00e1t v \u00favahu limity pom\u011bru stran.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.7 Druh\u00e1 vnit\u0159n\u00ed vrstva such\u00e9 f\u00f3lie<\/h3>\n\n\n\n<p>Po pokoven\u00ed zasypan\u00fdch pr\u016fchodek pro vrstvy 3-6 vypl\u0148te otvory prysky\u0159i\u010dn\u00fdm inkoustem a vra\u0165te se k vnit\u0159n\u00edm krok\u016fm such\u00e9 f\u00f3lie, abyste vytvo\u0159ili stopy vrstev 3 a 6. Po jejich dokon\u010den\u00ed prove\u010fte op\u011bt \u010dernou\/hn\u011bdou oxidaci a pot\u00e9 ode\u0161lete na druhou laminaci. Tato druh\u00e1 laminace prob\u00edh\u00e1 stejn\u00fdm postupem jako prvn\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.8 Druh\u00e1 laminace (HDI lis)<\/h3>\n\n\n\n<p>Desky HDI maj\u00ed tenk\u00e9 izola\u010dn\u00ed vrstvy, tak\u017ee lisov\u00e1n\u00ed je obt\u00ed\u017en\u011bj\u0161\u00ed. P\u0159i stejn\u00e9 tlou\u0161\u0165ce je pevnost LDP lep\u0161\u00ed ne\u017e RCC. LDP te\u010de pomaleji, tak\u017ee kontrola je snaz\u0161\u00ed.<\/p>\n\n\n\n<p>Pozn\u00e1mky k designu:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Na vnit\u0159n\u00edch ploch\u00e1ch se slep\u00fdmi\/zapu\u0161t\u011bn\u00fdmi pr\u016fchodkami se vn\u011bj\u0161\u00ed stopy mus\u00ed vyhnout m\u00edst\u016fm pr\u016fchodek, aby se zabr\u00e1nilo vzniku otev\u0159en\u00fdch obvod\u016f zp\u016fsoben\u00fdch prohlubn\u011bmi.<\/li>\n\n\n\n<li>P\u0159\u00edli\u0161 mnoho zakopan\u00fdch pr\u016fchodek mezi druhou a p\u0159edposledn\u00ed vrstvou m\u016f\u017ee vytvo\u0159it kan\u00e1lky, kter\u00e9 zten\u010d\u00ed dielektrikum. Pokud je to mo\u017en\u00e9, omezte tyto pr\u016fchodky.<\/li>\n<\/ol>\n\n\n\n<p>Pro laserov\u00e9 zaslepen\u00e9 pr\u016fchodky HDI CO\u2082 je b\u011b\u017enou metodou technika konformn\u00ed masky. P\u0159eneste vzory na vn\u011bj\u0161\u00ed m\u011b\u010f, vyleptejte mal\u00e1 ok\u00e9nka, kter\u00e1 odpov\u00eddaj\u00ed poloh\u00e1m laserov\u00fdch pr\u016fchodek, a pak v t\u011bchto sou\u0159adnic\u00edch pou\u017eijte laser s vy\u0161\u0161\u00edm v\u00fdkonem. To se hod\u00ed pro subtraktivn\u00ed v\u00edcevrstvou v\u00fdrobu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.9 Konformn\u00ed maska (laser prost\u0159ednictv\u00edm p\u0159edb\u011b\u017en\u00e9ho zpracov\u00e1n\u00ed)<\/h3>\n\n\n\n<p>Konformn\u00ed maska m\u00e1 dv\u011b \u010d\u00e1sti: Konformn\u00ed maska1 a konformn\u00ed maska2:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Konformn\u00ed maska1: leptac\u00ed podlo\u017eky, kter\u00e9 se zarovn\u00e1vaj\u00ed se slep\u00fdmi pr\u016fchodkami na obou stran\u00e1ch d\u00edl\u010d\u00ed desky, a ter\u010de pro zarovn\u00e1n\u00ed lept\u00e1n\u00ed pro automatick\u00e9 osvitov\u00e9 za\u0159\u00edzen\u00ed. To usnad\u0148uje pozd\u011bj\u0161\u00ed zpracov\u00e1n\u00ed a laserov\u00e9 vrt\u00e1n\u00ed.<\/li>\n\n\n\n<li>Konformn\u00ed maska2: vyleptejte ok\u00e9nka na horn\u00ed a spodn\u00ed m\u011bdi desky, kter\u00e1 jsou o n\u011bco v\u011bt\u0161\u00ed ne\u017e otvor pro laser. T\u00edm se p\u0159iprav\u00edte na zpracov\u00e1n\u00ed laserem CO\u2082.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Conformal-mask.webp\" alt=\"Conformal mask\" class=\"wp-image-4674\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Conformal-mask.webp 800w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Conformal-mask-300x188.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Conformal-mask-768x480.webp 768w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Conformal-mask-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3.10 Vrt\u00e1n\u00ed laserem (LASER DRILLING)<\/h3>\n\n\n\n<p>Laserov\u00e9 vrt\u00e1n\u00ed vyu\u017e\u00edv\u00e1 laserovou energii k vypalov\u00e1n\u00ed prysky\u0159ice a vytv\u00e1\u0159en\u00ed slep\u00fdch pr\u016fchodek. Energie laseru kles\u00e1 shora dol\u016f, tak\u017ee pr\u016fm\u011br otvoru se s hloubkou zmen\u0161uje. Typick\u00e1 velikost otvoru je 4-6 mil (0,10-0,15 mm). Podle normy IPC6016 se otvory \u22640,15 mm naz\u00fdvaj\u00ed mikrod\u00edry.<\/p>\n\n\n\n<p>Otvory v\u011bt\u0161\u00ed ne\u017e 0,15 mm je t\u0159eba vrtat spir\u00e1lou. Rychlost kles\u00e1 a n\u00e1klady rychle rostou. Laserov\u00e9 n\u00e1stroje hlavn\u00edho proudu nyn\u00ed pou\u017e\u00edvaj\u00ed vrt\u00e1n\u00ed t\u0159emi ranami. Rychlost je 100-200 otvor\u016f za sekundu. Men\u0161\u00ed otvory mohou b\u00fdt rychlej\u0161\u00ed (otvor 0,100 mm ~120 otvor\u016f za sekundu; otvor 0,076 mm ~170 otvor\u016f za sekundu).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.11 Laserov\u00e1 metalizace<\/h3>\n\n\n\n<p>Laserov\u00e9 otvory vyp\u00e1l\u00ed st\u011bnu otvoru a zanechaj\u00ed oho\u0159el\u00e9 stopy. Druh\u00e1 vrstva m\u011bdi m\u016f\u017ee oxidovat. K odstran\u011bn\u00ed zbytk\u016f po vrt\u00e1n\u00ed je nutn\u00e9 prom\u00fdv\u00e1n\u00ed vysokotlakou vodou. Mikrovrtn\u00e9 uhl\u00edky se odstra\u0148uj\u00ed obt\u00ed\u017en\u011b. Stohovan\u00e9 dvou\u00farov\u0148ov\u00e9 HDI vy\u017eaduje speci\u00e1ln\u00ed pokoven\u00ed slep\u00fdmi vrty a m\u011bd\u011bn\u00e9 pln\u011bn\u00ed (COPPER FILLING). To je n\u00e1kladn\u00e9 a pou\u017e\u00edv\u00e1 se u \u0161pi\u010dkov\u00fdch v\u00fdrobk\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.12 T\u0159et\u00ed vnit\u0159n\u00ed such\u00e1 f\u00f3lie<\/h3>\n\n\n\n<p>Po laserov\u00e9 metalizaci prove\u010fte druhou konformn\u00ed masku1. Pot\u00e9 se vra\u0165te k vnit\u0159n\u00edm krok\u016fm such\u00e9 vrstvy a vytvo\u0159te stopy vrstev 2 a 7. Po dokon\u010den\u00ed stop prove\u010fte \u010dernou\/hn\u011bdou oxidaci a t\u0159et\u00ed laminaci. Pot\u00e9 prove\u010fte t\u0159et\u00ed krok slep\u00e9ho lept\u00e1n\u00ed 1 a druh\u00fd krok slep\u00e9ho lept\u00e1n\u00ed 2, abyste se p\u0159ipravili na druh\u00e9 laserov\u00e9 vrt\u00e1n\u00ed.<\/p>\n\n\n\n<p>HDI druh\u00e9 \u00farovn\u011b vy\u017eaduje mnoho zarovn\u00e1n\u00ed. Chyby se mohou s\u010d\u00edtat. To zvy\u0161uje m\u00edru zmetkovitosti. Od jednodu\u0161\u0161\u00edho k obt\u00ed\u017en\u011bj\u0161\u00edmu v kombinac\u00edch p\u0159es:<br>1-2 + 2-3 pr\u016fchodky &lt; pouze 1-3 pr\u016fchodky &lt; 1-2 + 1-3 pr\u016fchodky &lt; 2-3 + 1-3 pr\u016fchodky &lt; 1-2 + 2-3 + 1-3 pr\u016fchodky.<br>Pr\u016fchodky HDI by m\u011bly b\u00fdt navr\u017eeny symetricky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.13 Druh\u00e9 laserov\u00e9 vrt\u00e1n\u00ed<\/h3>\n\n\n\n<p>Prove\u010fte druh\u00fd krok laserov\u00e9ho vrt\u00e1n\u00ed podle pl\u00e1nu pro dvou\u00farov\u0148ov\u00e9 HDI. Tento krok se \u0159\u00edd\u00ed podobn\u00fdmi pravidly jako prvn\u00ed laserov\u00e9 vrt\u00e1n\u00ed, ale vy\u017eaduje pe\u010dliv\u00e9 zarovn\u00e1n\u00ed a pl\u00e1nov\u00e1n\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.14 Mechanick\u00e9 vrt\u00e1n\u00ed (vrt\u00e1n\u00ed otvor\u016f)<\/h3>\n\n\n\n<p>Po proveden\u00ed laserov\u00fdch krok\u016f prove\u010fte mechanick\u00e9 vrt\u00e1n\u00ed pr\u016fchoz\u00edch otvor\u016f. T\u00edmto krokem se vyvrtaj\u00ed otvory, kter\u00e9 proch\u00e1zej\u00ed cel\u00fdm panelem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.15 Odstran\u011bn\u00ed zbytk\u016f po vrt\u00e1n\u00ed a pokoven\u00ed (P.T.H)<\/h3>\n\n\n\n<p>Slep\u00e9 pr\u016fchodky a pr\u016fchoz\u00ed otvory pokovte dohromady, aby byly v\u0161echny pr\u016fchodky pokoven\u00e9. V tomto okam\u017eiku speci\u00e1ln\u00ed tok HDI kon\u010d\u00ed. Od t\u00e9to chv\u00edle se deska \u0159\u00edd\u00ed standardn\u00edmi kroky dokon\u010dov\u00e1n\u00ed DPS.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.16 Vn\u011bj\u0161\u00ed such\u00e1 vrstva a pokovov\u00e1n\u00ed vzorem (DRY FILM &amp; PATTERN PLATING)<\/h3>\n\n\n\n<p>P\u0159enos vn\u011bj\u0161\u00edho vzoru je podobn\u00fd jako u vnit\u0159n\u00edch vrstev. Hlavn\u00ed rozd\u00edl je v metod\u011b pokovov\u00e1n\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Subtraktivn\u00ed metoda: pou\u017eit\u00ed negativn\u00edho filmu. Ztuhl\u00fd such\u00fd film z\u016fstane jako obvod. Pro zachov\u00e1n\u00ed obvodu film vyleptejte a odizolujte.<\/li>\n\n\n\n<li>P\u0159\u00eddavn\u00e1\/norm\u00e1ln\u00ed metoda: pou\u017eijte pozitivn\u00ed film. Vytvrzen\u00e1 such\u00e1 f\u00f3lie zakr\u00fdv\u00e1 m\u00edsta mimo obvod. Prove\u010fte vzorov\u00e9 pokoven\u00ed (m\u011b\u010f a pak c\u00edn), pak f\u00f3lii odizolujte, prove\u010fte alkalick\u00e9 lept\u00e1n\u00ed, odstra\u0148te c\u00edn a zachovejte obvod.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.17 P\u00e1jec\u00ed maska s mokr\u00fdm filmem (WET FILM SOLDER MASK)<\/h3>\n\n\n\n<p>P\u00e1jec\u00ed maska pokr\u00fdv\u00e1 povrch desky. Zabra\u0148uje \u0161patn\u00e9mu p\u00e1jen\u00ed, vlhkosti nebo chemik\u00e1li\u00edm, kter\u00e9 by mohly zp\u016fsobit zkrat, a chr\u00e1n\u00ed stopy p\u0159ed fyzick\u00fdm po\u0161kozen\u00edm. T\u00edm udr\u017euje stabiln\u00ed funkci desky plo\u0161n\u00fdch spoj\u016f.<\/p>\n\n\n\n<p>Postup: p\u0159ed\u010di\u0161t\u011bn\u00ed \u2192 n\u00e1t\u011br \u2192 p\u0159edpe\u010den\u00ed \u2192 expozice \u2192 vyvol\u00e1n\u00ed \u2192 UV vytvrzen\u00ed \u2192 tepeln\u00e9 vytvrzen\u00ed. Kl\u00ed\u010dov\u00e9 kontroln\u00ed body: zarovn\u00e1n\u00ed p\u00e1jec\u00ed masky, velikost maskov\u00e9ho m\u016fstku, v\u00fdroba pr\u016fchodek a tlou\u0161\u0165ka masky. Kvalita barvy ovliv\u0148uje pozd\u011bj\u0161\u00ed povrchovou \u00fapravu, mont\u00e1\u017e SMT a \u017eivotnost desky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.18 Selektivn\u00ed imerzn\u00ed zlato (IMMERSION GOLD)<\/h3>\n\n\n\n<p>Chemick\u00e9 niklov\u00e1n\u00ed\/zlacen\u00ed je povrchov\u00e1 \u00faprava po masce p\u00e1jky. Hod\u00ed se pro desky plo\u0161n\u00fdch spoj\u016f s malou rozte\u010d\u00ed stop a mnoho sou\u010d\u00e1stek pro povrchovou mont\u00e1\u017e. Pom\u00e1h\u00e1 koplanarit\u011b a rovinnosti podlo\u017eek. Zlato je stabiln\u00ed a ochrann\u00e9. Specifikace pokoven\u00ed: nikl ~5 \u03bcm, zlato 0,05-0,1 \u03bcm. P\u0159\u00edli\u0161 siln\u00e9 zlato m\u016f\u017ee praskat a vytv\u00e1\u0159et slab\u00e9 p\u00e1jec\u00ed spoje. P\u0159\u00edli\u0161 tenk\u00e9 zlato m\u00e1 \u0161patnou ochranu. ENIG je v n\u011bkter\u00fdch p\u0159\u00edpadech h\u016f\u0159e p\u00e1jiteln\u00fd a m\u016f\u017ee vykazovat tmav\u00e9 vady podlo\u017eky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.19 Tisk legendy (C\/M PRINTING)<\/h3>\n\n\n\n<p>Tiskn\u011bte legendy a zna\u010dky pomoc\u00ed legendov\u00e9ho inkoustu. To usnadn\u00ed pozd\u011bj\u0161\u00ed mont\u00e1\u017e a servis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.20 Fr\u00e9zov\u00e1n\u00ed a profilov\u00e1n\u00ed (PROFILING)<\/h3>\n\n\n\n<p>Hotov\u00fd panel na\u0159e\u017ete pomoc\u00ed CNC fr\u00e9zy na velikost UNIT nebo SET. Prov\u00e1d\u011bjte o\u0159ez\u00e1v\u00e1n\u00ed hran a fr\u00e9zov\u00e1n\u00ed dr\u00e1\u017eek. Pokud je pot\u0159eba V-CUT, p\u0159idejte odpov\u00eddaj\u00edc\u00ed kroky. Kl\u00ed\u010dov\u00e9 parametry: tolerance profilu, velikost zkosen\u00ed, vnit\u0159n\u00ed polom\u011br rohu. Ponechte bezpe\u010dnou vzd\u00e1lenost mezi vzory a okrajem desky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.21 Elektrick\u00e1 zkou\u0161ka (E-TEST)<\/h3>\n\n\n\n<p>Jedn\u00e1 se o test spojitosti a izolace. Hlavn\u00edmi metodami jsou zkou\u0161ka na h\u0159eb\u00edkov\u00e9m l\u016f\u017eku a zkou\u0161ka l\u00e9taj\u00edc\u00ed sondou:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nehtov\u00e9 l\u016f\u017eko: generick\u00e9 nebo zak\u00e1zkov\u00e9 p\u0159\u00edpravky. Obecn\u00e9 p\u0159\u00edpravky jsou dra\u017e\u0161\u00ed, ale vyhovuj\u00ed mnoha desk\u00e1m plo\u0161n\u00fdch spoj\u016f. Zak\u00e1zkov\u00e9 p\u0159\u00edpravky jsou levn\u011bj\u0161\u00ed na sou\u010d\u00e1st, ale pouze pro konkr\u00e9tn\u00ed desky plo\u0161n\u00fdch spoj\u016f.<\/li>\n\n\n\n<li>L\u00e9taj\u00edc\u00ed sonda: p\u0159esouv\u00e1 sondy k testovac\u00edm s\u00edt\u00edm. Je flexibiln\u00ed a vhodn\u00e1 pro mnoho mal\u00fdch s\u00e9ri\u00ed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.22 OSP (organick\u00e1 konzerva\u010dn\u00ed l\u00e1tka pro p\u00e1jen\u00ed)<\/h3>\n\n\n\n<p>OSP vytv\u00e1\u0159\u00ed organick\u00fd film na hol\u00fdch m\u011bd\u011bn\u00fdch podlo\u017ek\u00e1ch a pr\u016fchoz\u00edch otvorech po elektrick\u00e9m testu a vizu\u00e1ln\u00ed kontrole. Tlou\u0161\u0165ka filmu je 0,3-0,5 \u03bcm. Teplota rozkladu asi 300 \u00b0C.<\/p>\n\n\n\n<p>Hlavn\u00ed v\u00fdhody: ploch\u00e9 pokovov\u00e1n\u00ed, kter\u00e9 se hod\u00ed pro desky plo\u0161n\u00fdch spoj\u016f s malou rozte\u010d\u00ed; jednoduch\u00fd proces, n\u00edzk\u00e9 zne\u010di\u0161t\u011bn\u00ed, n\u00edzk\u00e9 n\u00e1klady a dobr\u00e1 p\u00e1jitelnost. Nev\u00fdhody: film je tenk\u00fd a snadno se po\u0161kr\u00e1be. Skladovatelnost je kr\u00e1tk\u00e1.<\/p>\n\n\n\n<p>Dnes se pro vysoce p\u0159esn\u00e9 desky pou\u017e\u00edvaj\u00ed kombinace ENIG + OSP. Poskytuj\u00ed ochranu a p\u00e1jitelnost a jsou bezolovnatou variantou, kter\u00e1 v n\u011bkter\u00fdch p\u0159\u00edpadech nahrazuje HASL. N\u00e1klady jsou vy\u0161\u0161\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/WET-FILM-SOLDER-MASK.webp\" alt=\"WET FILM SOLDER MASK\" class=\"wp-image-4679\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/WET-FILM-SOLDER-MASK.webp 800w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/WET-FILM-SOLDER-MASK-300x169.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/WET-FILM-SOLDER-MASK-768x432.webp 768w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/WET-FILM-SOLDER-MASK-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3.23 Z\u00e1v\u011bre\u010dn\u00fd audit (FINAL AUDIT)<\/h3>\n\n\n\n<p>Zkontrolujte vzhled, velikost, elektrick\u00fd v\u00fdkon a kvalitu pokoven\u00ed desek plo\u0161n\u00fdch spoj\u016f. Ujist\u011bte se, \u017ee v\u0161e odpov\u00edd\u00e1 konstruk\u010dn\u00edm a pr\u016fmyslov\u00fdm norm\u00e1m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.24 Balen\u00ed (PACKING)<\/h3>\n\n\n\n<p>Zabalte proch\u00e1zej\u00edc\u00ed desky plo\u0161n\u00fdch spoj\u016f, abyste zabr\u00e1nili vlhkosti a po\u0161kr\u00e1b\u00e1n\u00ed. Chra\u0148te desky b\u011bhem p\u0159epravy a dob\u0159e je ulo\u017ete pro pozd\u011bj\u0161\u00ed pou\u017eit\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>Below is the English translation. I used clear, simple wording and basic linking words (and, but, so, then, because). I [&hellip;]<\/p>","protected":false},"author":1,"featured_media":4678,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[36,30],"tags":[184,176,179,186,183,178,141,144,177,180,163,182,181,187,142,175,185],"class_list":["post-4673","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pcb-design","category-pcb-manufacturers","tag-advanced-pcb-technology","tag-blind-via","tag-buried-via","tag-conformal-mask","tag-fr4-pcb","tag-hdi-manufacturing-process","tag-hdi-pcb","tag-high-density-interconnect","tag-laser-drilling-pcb","tag-microvia","tag-multilayer-pcb","tag-pcb-fabrication","tag-pcb-lamination","tag-pcb-plating","tag-pcb-stackup","tag-rcc-material","tag-via-metallization"],"spectra_custom_meta":{"_edit_lock":["1769160250:1"],"rank_math_internal_links_processed":["1"],"rank_math_seo_score":["26"],"rank_math_primary_category":["36"],"rank_math_title":["%title%"],"_thumbnail_id":["4678"],"_uag_custom_page_level_css":[""],"site-sidebar-layout":["default"],"site-content-layout":[""],"ast-site-content-layout":["default"],"site-content-style":["default"],"site-sidebar-style":["default"],"ast-global-header-display":[""],"ast-banner-title-visibility":[""],"ast-main-header-display":[""],"ast-hfb-above-header-display":[""],"ast-hfb-below-header-display":[""],"ast-hfb-mobile-header-display":[""],"site-post-title":[""],"ast-breadcrumbs-content":[""],"ast-featured-img":[""],"footer-sml-layout":[""],"theme-transparent-header-meta":[""],"adv-header-id-meta":[""],"stick-header-meta":[""],"header-above-stick-meta":[""],"header-main-stick-meta":[""],"header-below-stick-meta":[""],"astra-migrate-meta-layouts":["default"],"ast-page-background-enabled":["default"],"ast-page-background-meta":["a:3:{s:7:\"desktop\";a:12:{s:16:\"background-color\";s:25:\"var(--ast-global-color-5)\";s:16:\"background-image\";s:0:\"\";s:17:\"background-repeat\";s:6:\"repeat\";s:19:\"background-position\";s:13:\"center center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}s:6:\"tablet\";a:12:{s:16:\"background-color\";s:0:\"\";s:16:\"background-image\";s:0:\"\";s:17:\"background-repeat\";s:6:\"repeat\";s:19:\"background-position\";s:13:\"center center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}s:6:\"mobile\";a:12:{s:16:\"background-color\";s:0:\"\";s:16:\"background-image\";s:0:\"\";s:17:\"background-repeat\";s:6:\"repeat\";s:19:\"background-position\";s:13:\"center center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}}"],"ast-content-background-meta":["a:3:{s:7:\"desktop\";a:12:{s:16:\"background-color\";s:25:\"var(--ast-global-color-4)\";s:16:\"background-image\";s:0:\"\";s:17:\"background-repeat\";s:6:\"repeat\";s:19:\"background-position\";s:13:\"center center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}s:6:\"tablet\";a:12:{s:16:\"background-color\";s:25:\"var(--ast-global-color-4)\";s:16:\"background-image\";s:0:\"\";s:17:\"background-repeat\";s:6:\"repeat\";s:19:\"background-position\";s:13:\"center center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}s:6:\"mobile\";a:12:{s:16:\"background-color\";s:25:\"var(--ast-global-color-4)\";s:16:\"background-image\";s:0:\"\";s:17:\"background-repeat\";s:6:\"repeat\";s:19:\"background-position\";s:13:\"center center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}}"],"footnotes":[""],"_elementor_edit_mode":[""],"_elementor_template_type":[""],"_elementor_data":[""],"_elementor_conditions":["a:0:{}"],"_edit_last":["1"],"_uag_page_assets":["a:9:{s:3:\"css\";s:30185:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) !important}}\n.uagb-social-share__outer-wrap,.uagb-social-share__wrap{display:flex;align-items:center;justify-content:center}.uagb-social-share__layout-vertical.uagb-social-share__outer-wrap,.uagb-social-share__layout-vertical .uagb-social-share__wrap{flex-direction:column}.uagb-social-share__layout-vertical .wp-block-uagb-social-share-child.uagb-ss-repeater.uagb-ss__wrapper:first-child{margin-top:0 !important}.uagb-social-share__layout-vertical .wp-block-uagb-social-share-child.uagb-ss-repeater.uagb-ss__wrapper:last-child{margin-bottom:0 !important}.uagb-social-share__outer-wrap a.uagb-button__link:focus{box-shadow:none}.uagb-social-share__outer-wrap .uagb-ss__wrapper{padding:0;margin-left:5px;margin-right:5px;transition:all 0.2s;display:inline-flex;text-align:center}.uagb-social-share__outer-wrap .uagb-ss__source-wrap{display:inline-block}.uagb-social-share__outer-wrap .uagb-ss__link{color:#3a3a3a;display:inline-table;line-height:0;cursor:pointer}.uagb-social-share__outer-wrap .uagb-ss__source-icon{font-size:40px;width:40px;height:40px}.uagb-social-share__outer-wrap .uagb-ss__source-image{width:40px}@media (max-width: 976px){.uagb-social-share__layout-horizontal .uagb-ss__wrapper{margin-left:0;margin-right:0}}.uagb-social-share__layout-horizontal .wp-block-uagb-social-share-child.uagb-ss-repeater.uagb-ss__wrapper:first-child{margin-left:0 !important}.uagb-social-share__layout-horizontal .wp-block-uagb-social-share-child.uagb-ss-repeater.uagb-ss__wrapper:last-child{margin-right:0 !important}\n.wp-block-uagb-social-share .uagb-social-share__wrapper{text-decoration:none}.uagb-social-share__wrapper{box-shadow:none}.uagb-social-share__outer-wrap:not(.uagb-social-share__no-label) .uagb-social-share__source-wrap{margin-right:15px}.uagb-social-share__outer-wrap.uagb-social-share__icon-at-top .uagb-social-share__source-wrap{-ms-flex-item-align:flex-start;align-self:flex-start;margin-top:5px}\n.uagb-block-015f0124 .uagb-ss-repeater span.uagb-ss__link{color: #3a3a3a;}.uagb-block-015f0124 .uagb-ss-repeater a.uagb-ss__link{color: #3a3a3a;}.uagb-block-015f0124 .uagb-ss-repeater span.uagb-ss__link svg{fill: #3a3a3a;}.uagb-block-015f0124 .uagb-ss-repeater a.uagb-ss__link svg{fill: #3a3a3a;}.uagb-block-015f0124.uagb-social-share__layout-vertical .uagb-ss__wrapper{margin-left: 0;margin-right: 0;margin-top: 5px;margin-bottom: 5px;}.uagb-block-015f0124.uagb-social-share__layout-vertical .uagb-ss__link{padding: 10px;}.uagb-block-015f0124.uagb-social-share__layout-horizontal .uagb-ss__link{padding: 10px;}.uagb-block-015f0124.uagb-social-share__layout-horizontal .uagb-ss__wrapper{margin-left: 5px;margin-right: 5px;}.uagb-block-015f0124 .wp-block-uagb-social-share-child {border-radius: 0px;}.uagb-block-015f0124 .uagb-ss__source-wrap{width: 30px;}.uagb-block-015f0124 .uagb-ss__source-wrap svg{width: 30px;height: 30px;}.uagb-block-015f0124 .uagb-ss__source-image{width: 30px;}.uagb-block-015f0124 .uagb-ss__source-icon{width: 30px;height: 30px;font-size: 30px;}.uagb-block-015f0124.uagb-social-share__outer-wrap{justify-content: center;-webkit-box-pack: center;-ms-flex-pack: center;-webkit-box-align: center;-ms-flex-align: center;align-items: center;}.uagb-block-44317091.uagb-ss-repeater span.uagb-ss__link{color: #3b5998;}.uagb-block-44317091.uagb-ss-repeater a.uagb-ss__link{color: #3b5998;}.uagb-block-44317091.uagb-ss-repeater span.uagb-ss__link svg{fill: #3b5998;}.uagb-block-44317091.uagb-ss-repeater a.uagb-ss__link svg{fill: #3b5998;}.uagb-block-df693e43.uagb-ss-repeater span.uagb-ss__link{color: #55acee;}.uagb-block-df693e43.uagb-ss-repeater a.uagb-ss__link{color: #55acee;}.uagb-block-df693e43.uagb-ss-repeater span.uagb-ss__link svg{fill: #55acee;}.uagb-block-df693e43.uagb-ss-repeater a.uagb-ss__link svg{fill: #55acee;}.uagb-block-e0123642.uagb-ss-repeater span.uagb-ss__link{color: #bd081c;}.uagb-block-e0123642.uagb-ss-repeater a.uagb-ss__link{color: #bd081c;}.uagb-block-e0123642.uagb-ss-repeater span.uagb-ss__link svg{fill: #bd081c;}.uagb-block-e0123642.uagb-ss-repeater a.uagb-ss__link svg{fill: #bd081c;}.uagb-block-23521e42.uagb-ss-repeater span.uagb-ss__link{color: #0077b5;}.uagb-block-23521e42.uagb-ss-repeater a.uagb-ss__link{color: #0077b5;}.uagb-block-23521e42.uagb-ss-repeater span.uagb-ss__link svg{fill: #0077b5;}.uagb-block-23521e42.uagb-ss-repeater a.uagb-ss__link svg{fill: #0077b5;}@media only screen and (max-width: 976px) {.uagb-block-015f0124.uagb-social-share__layout-vertical .uagb-ss__wrapper{margin-left: 0;margin-right: 0;margin-top: 5px;margin-bottom: 5px;}.uagb-block-015f0124.uagb-social-share__layout-horizontal .uagb-ss__wrapper{margin-left: 5px;margin-right: 5px;}.uagb-block-015f0124.uagb-social-share__outer-wrap{justify-content: center;-webkit-box-pack: center;-ms-flex-pack: center;-webkit-box-align: center;-ms-flex-align: center;align-items: center;}}@media only screen and (max-width: 767px) {.uagb-block-015f0124.uagb-social-share__layout-vertical .uagb-ss__wrapper{margin-left: 0;margin-right: 0;margin-top: 5px;margin-bottom: 5px;}.uagb-block-015f0124.uagb-social-share__layout-horizontal .uagb-ss__wrapper{margin-left: 5px;margin-right: 5px;}.uagb-block-015f0124.uagb-social-share__outer-wrap{justify-content: center;-webkit-box-pack: center;-ms-flex-pack: center;-webkit-box-align: center;-ms-flex-align: center;align-items: center;}}.uagb-cta__outer-wrap .uagb-cta__content,.uagb-cta__outer-wrap a.uagb-cta__block-link span,.uagb-cta__outer-wrap .uagb-cta__content-right .uagb-cta__button-wrapper,.uagb-cta__outer-wrap .uagb-cta-typeof-button,.uagb-cta__outer-wrap .uagb-cta__content-right .uagb-cta__block-link,.uagb-cta__outer-wrap .uagb-cta-with-svg{display:inline-block}.uagb-cta__outer-wrap{display:flex;justify-content:space-between}.wp-block-uagb-call-to-action .uagb-cta__buttons{display:inline-flex}.wp-block-uagb-call-to-action .wp-block-button__link,.wp-block-uagb-call-to-action .ast-outline-button{fill:currentColor;justify-content:center}.uagb-cta__button-link-wrapper,.uagb-cta-second__button{display:inline-flex;align-items:center;word-break:keep-all;width:100%}.uagb-cta__title{padding:0;margin:0;display:block}.uagb-cta__content-right .uagb-cta__button-wrapper{float:right}.uagb-cta__link-wrapper.uagb-cta__block-link-style:empty{display:none}a.uagb-cta__block-link,.entry .entry-content a.uagb-cta__block-link,a.uagb-cta__block-link-wrap,.entry .entry-content a.uagb-cta__block-link-wrap{text-decoration:none}a.uagb-cta__block-link:hover,.entry .entry-content a.uagb-cta__block-link:hover,a.uagb-cta__block-link-wrap:hover,.entry .entry-content a.uagb-cta__block-link-wrap:hover .entry .entry-content a.uagb-cta__block-link:hover{color:inherit}.uagb-cta__content-right{text-align:right;justify-content:flex-end}.uagb-cta__left-right-wrap{width:100%;word-break:break-word}.uagb-cta__icon-position-below-title .uagb-cta__left-right-wrap{display:block;min-width:100%;width:100%}.uagb-cta__icon-position-left .uagb-cta__left-right-wrap,.uagb-cta__icon-position-right .uagb-cta__left-right-wrap{display:flex}.uagb-cta__icon-position-right .uagb-cta__left-right-wrap{justify-content:flex-end}.uagb-cta__block-link-icon-after{margin-left:5px;margin-right:0}.uagb-cta__block-link-icon-before{margin-left:0;margin-right:5px}.uagb-cta__block-link-icon,.uagb-cta__block svg{transition:all 200ms linear}.uagb-cta__block{position:relative}.uagb-cta-typeof-button{line-height:1;text-align:center}.uagb-cta__content-right .uagb-cta__button-link-wrapper,.uagb-cta__content-right .uagb-cta-second__button .uagb-cta__content-right .uagb-cta__block-link,.uagb-cta__content-right.uagb-cta__button-valign-middle .uagb-cta__left-right-wrap{display:flex;align-items:center}.uagb-cta__content-right .uagb-cta__button-link-wrapper,.uagb-cta__content-right .uagb-cta-second__button .uagb-cta__content-right .uagb-cta__block-link{justify-content:center}.uagb-cta__link-wrapper a{box-shadow:none;text-decoration:none}.uagb-cta__block,.uagb-cta__content,.uagb-cta__left-right-wrap{z-index:1}.uagb-cta__block-link{cursor:pointer}.uagb-cta__content-right .uagb-cta__block-link{float:right;padding:10px 14px}a.uagb-cta__block-link-wrap{color:inherit}.uagb-cta__content p:empty{display:none}.uagb-cta__button-type-none .uagb-cta__content{width:100%}.uagb-cta-with-svg{height:14px;width:14px;line-height:14px;vertical-align:middle}.uagb-cta__block svg{display:block;height:inherit;width:inherit}.uagb-cta__button-link-wrapper svg{width:20px;height:20px}.uagb-cta__align-button-after{margin-left:5px}.uagb-cta__align-button-before{margin-right:5px}.uagb-cta__block-link i{font-style:normal}a.uagb-cta__link-to-all{position:absolute;top:0;left:0;width:100%;height:100%;z-index:11}.wp-block-uagb-call-to-action{position:relative}.wp-block-uagb-call-to-action a.uagb-cta__link-to-all{position:absolute;top:0;left:0;width:100%;height:100%;z-index:11}@media only screen and (max-width: 976px){.uagb-cta__content-stacked-tablet,.uagb-cta__content-stacked-tablet .uagb-cta__left-right-wrap{flex-direction:column;text-align:center}.uagb-cta__content-stacked-tablet.uagb-cta__content-right .uagb-cta__button-wrapper{float:none;margin:0 auto}.uagb-cta__content-stacked-tablet .uagb-cta__left-right-wrap .uagb-cta__content{margin-left:0;margin-right:0}.uagb-cta__content-stacked-tablet.uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__content,.uagb-cta__content-stacked-tablet.uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__link-wrapper{width:100% !important}}@media screen and (max-width: 767px){.uagb-cta__content-stacked-mobile,.uagb-cta__content-stacked-mobile .uagb-cta__left-right-wrap{flex-direction:column;text-align:center}.uagb-cta__content-stacked-mobile.uagb-cta__content-right .uagb-cta__button-wrapper{float:none;margin:0 auto}.uagb-cta__content-stacked-mobile .uagb-cta__left-right-wrap .uagb-cta__content{margin-left:0;margin-right:0}.uagb-cta__content-stacked-mobile.uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__content,.uagb-cta__content-stacked-mobile.uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__link-wrapper{width:100% !important}}.uagb-cta__desc p:last-child{margin-bottom:0}\n#uagb-cta-block-.wp-block-uagb-call-to-action .uagb-cta__title{margin-bottom: 10px;}#uagb-cta-block-.wp-block-uagb-call-to-action .uagb-cta__desc{margin-bottom: 10px;}#uagb-cta-block- .uagb-cta__align-button-after{margin-left: 10px;}#uagb-cta-block- .uagb-cta__align-button-before{margin-right: 10px;}#uagb-cta-block-.wp-block-uagb-call-to-action a.uagb-cta__button-link-wrapper > svg{margin-left: 10px;}#uagb-cta-block-.wp-block-uagb-call-to-action a.uagb-cta-second__button > svg{margin-left: 10px;font-size: 14px;width: 14px;height: 14px;line-height: 14px;}#uagb-cta-block- .uagb-cta__content-wrap{text-align: left;}#uagb-cta-block- .uagb-cta__wrap{width: 70%;text-align: left;}#uagb-cta-block-.wp-block-uagb-call-to-action{text-align: left;}#uagb-cta-block- .uagb-cta__left-right-wrap .uagb-cta__content{margin-left: 0px;}#uagb-cta-block- .uagb-cta__buttons{column-gap: 15px;}#uagb-cta-block-.wp-block-uagb-call-to-action {display: flex;justify-content: space-between;}#uagb-cta-block- .uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__content{width: 70%;}#uagb-cta-block- .uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__link-wrapper{width: 30%;}#uagb-cta-block-.wp-block-uagb-call-to-action a.uagb-cta__button-link-wrapper {align-self: center;height: fit-content;margin-left: auto;}#uagb-cta-block-.wp-block-uagb-call-to-action  {flex-direction: row;align-items: center;}#uagb-cta-block-.wp-block-uagb-call-to-action.wp-block-button a.uagb-cta-second__button{align-self: center;height: fit-content;}#uagb-cta-block-.wp-block-uagb-call-to-action.wp-block-button a.uagb-cta-second__button:hover{background-color: !important;}#uagb-cta-block-.wp-block-uagb-call-to-action.wp-block-button a.uagb-cta-second__button:focus{background-color: !important;}#uagb-cta-block- .uagb-cta__button-wrapper a.uagb-cta-typeof-button{color: #333;border-style: solid;}#uagb-cta-block-.wp-block-uagb-call-to-action.wp-block-button .uagb-cta__buttons a.uagb-cta__button-link-wrapper.wp-block-button__link{border-style: solid;}#uagb-cta-block-.wp-block-uagb-call-to-action a.uagb-cta-second__button{text-transform: normal;text-decoration: none;font-size: 14px;}@media only screen and (max-width: 976px) {#uagb-cta-block-.wp-block-uagb-call-to-action.uagb-cta__content-stacked-tablet {display: inherit;}#uagb-cta-block-.uagb-cta__content-stacked-tablet .uagb-cta__wrap{width: 100%;}#uagb-cta-block- .uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__link-wrapper{width: 30%;}#uagb-cta-block- .uagb-cta__wrap{text-align: center;}#uagb-cta-block-.wp-block-uagb-call-to-action {flex-direction: column;align-items: center;}}@media only screen and (max-width: 767px) {#uagb-cta-block-.wp-block-uagb-call-to-action.uagb-cta__content-stacked-mobile {display: inherit;}#uagb-cta-block-.uagb-cta__content-stacked-mobile .uagb-cta__wrap{width: 100%;}#uagb-cta-block- .uagb-cta__buttons{justify-content: center;}#uagb-cta-block- .uagb-cta__content-right .uagb-cta__left-right-wrap .uagb-cta__link-wrapper{width: 30%;}#uagb-cta-block- .uagb-cta__wrap{text-align: center;}#uagb-cta-block-.wp-block-uagb-call-to-action {flex-direction: column;align-items: center;}}.uagb-icon-list__wrap{display:flex;align-items:flex-start;justify-content:flex-start}.wp-block-uagb-icon-list-child{padding:0;transition:all 0.2s;display:inline-flex;color:#3a3a3a;align-items:center;text-decoration:none;box-shadow:none}.wp-block-uagb-icon-list-child span.uagb-icon-list__source-wrap{display:block;align-items:center}.uagb-icon-list__source-wrap svg{display:block}.uagb-icon-list__source-image{width:40px}.uagb-icon-list__outer-wrap .uagb-icon-list__content-wrap{color:#3a3a3a;display:flex;align-items:center}\n.wp-block-uagb-icon-list-child{position:relative}.wp-block-uagb-icon-list-child>a{position:absolute;top:0;left:0;width:100%;height:100%}img.uagb-icon-list__source-image{max-width:unset}.wp-block-uagb-icon-list-child .uagb-icon-list__label{word-break:break-word}\n.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__source-image{width: 16px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap svg{width: 16px;height: 16px;font-size: 16px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap{padding: 0px;border-radius: 0px;border-width: 0px;align-self: center;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__label{text-decoration: !important;line-height: em;}.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__wrap{display: flex;flex-direction: column;justify-content: center;-webkit-box-pack: center;-ms-flex-pack: center;-webkit-box-align: flex-start;-ms-flex-align: flex-start;align-items: flex-start;}.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__label{text-align: left;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child{text-decoration: !important;line-height: em;}.wp-block-uagb-icon-list.uagb-block-f606f41a.wp-block-uagb-icon-list .wp-block-uagb-icon-list-child{margin-left: 0;margin-right: 0;margin-bottom: 10px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__source-wrap{margin-right: 15px;}.uagb-block-ddf54d80.wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap{background:  !important;border-color:  !important;}.uagb-block-ddf54d80.wp-block-uagb-icon-list-child:hover .uagb-icon-list__source-wrap{background:  !important;border-color:  !important;}.uagb-block-b45e4180.wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap{background:  !important;border-color:  !important;}.uagb-block-b45e4180.wp-block-uagb-icon-list-child:hover .uagb-icon-list__source-wrap{background:  !important;border-color:  !important;}.uagb-block-6962245c.wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap{background:  !important;border-color:  !important;}.uagb-block-6962245c.wp-block-uagb-icon-list-child:hover .uagb-icon-list__source-wrap{background:  !important;border-color:  !important;}@media only screen and (max-width: 976px) {.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__source-image{width: 16px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap svg{width: 16px;height: 16px;font-size: 16px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap {padding: 0px;border-width: 0px;align-self: center;}.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__wrap{display: flex;flex-direction: column;justify-content: center;-webkit-box-pack: center;-ms-flex-pack: center;-webkit-box-align: flex-start;-ms-flex-align: flex-start;align-items: flex-start;}.wp-block-uagb-icon-list.uagb-block-f606f41a.wp-block-uagb-icon-list .wp-block-uagb-icon-list-child{margin-left: 0;margin-right: 0;margin-bottom: 10px;}}@media only screen and (max-width: 767px) {.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__source-image{width: 16px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap svg{width: 16px;height: 16px;font-size: 16px;}.wp-block-uagb-icon-list.uagb-block-f606f41a .wp-block-uagb-icon-list-child .uagb-icon-list__source-wrap{padding: 0px;border-width: 0px;align-self: center;}.wp-block-uagb-icon-list.uagb-block-f606f41a .uagb-icon-list__wrap{display: flex;flex-direction: column;justify-content: center;-webkit-box-pack: center;-ms-flex-pack: center;-webkit-box-align: flex-start;-ms-flex-align: flex-start;align-items: flex-start;}.wp-block-uagb-icon-list.uagb-block-f606f41a.wp-block-uagb-icon-list .wp-block-uagb-icon-list-child{margin-left: 0;margin-right: 0;margin-bottom: 10px;}}.wp-block-uagb-container{display:flex;position:relative;box-sizing:border-box;transition-property:box-shadow;transition-duration:0.2s;transition-timing-function:ease}.wp-block-uagb-container .spectra-container-link-overlay{bottom:0;left:0;position:absolute;right:0;top:0;z-index:10}.wp-block-uagb-container.uagb-is-root-container{margin-left:auto;margin-right:auto}.wp-block-uagb-container.alignfull.uagb-is-root-container .uagb-container-inner-blocks-wrap{display:flex;position:relative;box-sizing:border-box;margin-left:auto !important;margin-right:auto !important}.wp-block-uagb-container .wp-block-uagb-blockquote,.wp-block-uagb-container .wp-block-spectra-pro-login,.wp-block-uagb-container .wp-block-spectra-pro-register{margin:unset}.wp-block-uagb-container .uagb-container__video-wrap{height:100%;width:100%;top:0;left:0;position:absolute;overflow:hidden;-webkit-transition:opacity 1s;-o-transition:opacity 1s;transition:opacity 1s}.wp-block-uagb-container .uagb-container__video-wrap video{max-width:100%;width:100%;height:100%;margin:0;line-height:1;border:none;display:inline-block;vertical-align:baseline;-o-object-fit:cover;object-fit:cover;background-size:cover}.wp-block-uagb-container.uagb-layout-grid{display:grid;width:100%}.wp-block-uagb-container.uagb-layout-grid>.uagb-container-inner-blocks-wrap{display:inherit;width:inherit}.wp-block-uagb-container.uagb-layout-grid>.uagb-container-inner-blocks-wrap>.wp-block-uagb-container{max-width:unset !important;width:unset !important}.wp-block-uagb-container.uagb-layout-grid>.wp-block-uagb-container{max-width:unset !important;width:unset !important}.wp-block-uagb-container.uagb-layout-grid.uagb-is-root-container{margin-left:auto;margin-right:auto}.wp-block-uagb-container.uagb-layout-grid.uagb-is-root-container>.wp-block-uagb-container{max-width:unset !important;width:unset !important}.wp-block-uagb-container.uagb-layout-grid.alignwide.uagb-is-root-container{margin-left:auto;margin-right:auto}.wp-block-uagb-container.uagb-layout-grid.alignfull.uagb-is-root-container .uagb-container-inner-blocks-wrap{display:inherit;position:relative;box-sizing:border-box;margin-left:auto !important;margin-right:auto !important}body .wp-block-uagb-container>.uagb-container-inner-blocks-wrap>*:not(.wp-block-uagb-container):not(.wp-block-uagb-column):not(.wp-block-uagb-container):not(.wp-block-uagb-section):not(.uagb-container__shape):not(.uagb-container__video-wrap):not(.wp-block-spectra-pro-register):not(.wp-block-spectra-pro-login):not(.uagb-slider-container):not(.spectra-image-gallery__control-lightbox):not(.wp-block-uagb-info-box),body .wp-block-uagb-container>.uagb-container-inner-blocks-wrap,body .wp-block-uagb-container>*:not(.wp-block-uagb-container):not(.wp-block-uagb-column):not(.wp-block-uagb-container):not(.wp-block-uagb-section):not(.uagb-container__shape):not(.uagb-container__video-wrap):not(.wp-block-spectra-pro-register):not(.wp-block-spectra-pro-login):not(.uagb-slider-container):not(.spectra-container-link-overlay):not(.spectra-image-gallery__control-lightbox):not(.wp-block-uagb-lottie):not(.uagb-faq__outer-wrap){min-width:unset !important;width:100%;position:relative}body .ast-container .wp-block-uagb-container>.uagb-container-inner-blocks-wrap>.wp-block-uagb-container>ul,body .ast-container .wp-block-uagb-container>.uagb-container-inner-blocks-wrap>.wp-block-uagb-container ol,body .ast-container .wp-block-uagb-container>.uagb-container-inner-blocks-wrap>ul,body .ast-container .wp-block-uagb-container>.uagb-container-inner-blocks-wrap ol{max-width:-webkit-fill-available;margin-block-start:0;margin-block-end:0;margin-left:20px}.ast-plain-container .editor-styles-wrapper .block-editor-block-list__layout.is-root-container .uagb-is-root-container.wp-block-uagb-container.alignwide{margin-left:auto;margin-right:auto}.uagb-container__shape{overflow:hidden;position:absolute;left:0;width:100%;line-height:0;direction:ltr}.uagb-container__shape-top{top:-3px}.uagb-container__shape-bottom{bottom:-3px}.uagb-container__shape.uagb-container__invert.uagb-container__shape-bottom,.uagb-container__shape.uagb-container__invert.uagb-container__shape-top{-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);transform:rotate(180deg)}.uagb-container__shape.uagb-container__shape-flip svg{transform:translateX(-50%) rotateY(180deg)}.uagb-container__shape svg{display:block;width:-webkit-calc(100% + 1.3px);width:calc(100% + 1.3px);position:relative;left:50%;-webkit-transform:translateX(-50%);-ms-transform:translateX(-50%);transform:translateX(-50%)}.uagb-container__shape .uagb-container__shape-fill{-webkit-transform-origin:center;-ms-transform-origin:center;transform-origin:center;-webkit-transform:rotateY(0deg);transform:rotateY(0deg)}.uagb-container__shape.uagb-container__shape-above-content{z-index:9;pointer-events:none}.nv-single-page-wrap .nv-content-wrap.entry-content .wp-block-uagb-container.alignfull{margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw)}@media only screen and (max-width: 767px){.wp-block-uagb-container .wp-block-uagb-advanced-heading{width:-webkit-fill-available}}.wp-block-uagb-image--align-none{justify-content:center}\n.wp-block-uagb-container.uagb-block-845e6da6 .uagb-container__shape-top svg{width: calc( 100% + 1.3px );}.wp-block-uagb-container.uagb-block-845e6da6 .uagb-container__shape.uagb-container__shape-top .uagb-container__shape-fill{fill: rgba(51,51,51,1);}.wp-block-uagb-container.uagb-block-845e6da6 .uagb-container__shape-bottom svg{width: calc( 100% + 1.3px );}.wp-block-uagb-container.uagb-block-845e6da6 .uagb-container__shape.uagb-container__shape-bottom .uagb-container__shape-fill{fill: rgba(51,51,51,1);}.wp-block-uagb-container.uagb-block-845e6da6 .uagb-container__video-wrap video{opacity: 1;}.wp-block-uagb-container.uagb-is-root-container .uagb-block-845e6da6{max-width: 100%;width: 100%;}.wp-block-uagb-container.uagb-is-root-container.alignfull.uagb-block-845e6da6 > .uagb-container-inner-blocks-wrap{--inner-content-custom-width: min( 100%, 1200px);max-width: var(--inner-content-custom-width);width: 100%;flex-direction: column;align-items: center;justify-content: center;flex-wrap: nowrap;row-gap: 20px;column-gap: 20px;}.wp-block-uagb-container.uagb-block-845e6da6{box-shadow: 0px 0px   #00000070 ;padding-top: 10px;padding-bottom: 10px;padding-left: 10px;padding-right: 10px;margin-top:  !important;margin-bottom:  !important;overflow: visible;order: initial;border-color: inherit;row-gap: 20px;column-gap: 20px;}@media only screen and (max-width: 976px) {.wp-block-uagb-container.uagb-is-root-container .uagb-block-845e6da6{width: 100%;}.wp-block-uagb-container.uagb-is-root-container.alignfull.uagb-block-845e6da6 > .uagb-container-inner-blocks-wrap{--inner-content-custom-width: min( 100%, 1024px);max-width: var(--inner-content-custom-width);width: 100%;}.wp-block-uagb-container.uagb-block-845e6da6{padding-top: 10px;padding-bottom: 10px;padding-left: 10px;padding-right: 10px;margin-top:  !important;margin-bottom:  !important;order: initial;}}@media only screen and (max-width: 767px) {.wp-block-uagb-container.uagb-is-root-container .uagb-block-845e6da6{max-width: 100%;width: 100%;}.wp-block-uagb-container.uagb-is-root-container.alignfull.uagb-block-845e6da6 > .uagb-container-inner-blocks-wrap{--inner-content-custom-width: min( 100%, 767px);max-width: var(--inner-content-custom-width);width: 100%;flex-wrap: wrap;}.wp-block-uagb-container.uagb-block-845e6da6{padding-top: 10px;padding-bottom: 10px;padding-left: 10px;padding-right: 10px;margin-top:  !important;margin-bottom:  !important;order: initial;}}.wp-block-uagb-icon svg{width:30px}.uagb-icon-wrapper .uagb-svg-wrapper{transition:box-shadow 0.2s ease}\n .uagb-block-2b67c985.uagb-icon-wrapper{text-align: center;} .uagb-block-2b67c985.uagb-icon-wrapper .uagb-svg-wrapper a{display: contents;} .uagb-block-2b67c985.uagb-icon-wrapper svg{width: 40px;height: 40px;transform: rotate(0deg);box-sizing: content-box;fill: #333;filter: drop-shadow( 0px 0px 0px #00000070 );} .uagb-block-2b67c985.uagb-icon-wrapper .uagb-svg-wrapper{display: inline-flex;padding-top: 5px;padding-right: 5px;padding-bottom: 5px;padding-left: 5px;border-style: default;box-shadow: 0px 0px 0 #00000070 ;} .uagb-block-2b67c985.uagb-icon-wrapper .uagb-svg-wrapper:hover{box-shadow: 0px 0px 0 #00000070 ;} .uagb-block-2b67c985.uagb-icon-wrapper .uagb-svg-wrapper:focus-visible{box-shadow: 0px 0px 0 #00000070 ;}@media only screen and (max-width: 976px) { .uagb-block-2b67c985.uagb-icon-wrapper .uagb-svg-wrapper{display: inline-flex;}}@media only screen and (max-width: 767px) { .uagb-block-2b67c985.uagb-icon-wrapper .uagb-svg-wrapper{display: inline-flex;}} .uagb-block-3c223d05.uagb-icon-wrapper{text-align: center;} .uagb-block-3c223d05.uagb-icon-wrapper .uagb-svg-wrapper a{display: contents;} .uagb-block-3c223d05.uagb-icon-wrapper svg{width: 40px;height: 40px;transform: rotate(0deg);box-sizing: content-box;fill: #333;filter: drop-shadow( 0px 0px 0px #00000070 );} .uagb-block-3c223d05.uagb-icon-wrapper .uagb-svg-wrapper{display: inline-flex;padding-top: 5px;padding-right: 5px;padding-bottom: 5px;padding-left: 5px;border-style: default;box-shadow: 0px 0px 0 #00000070 ;} .uagb-block-3c223d05.uagb-icon-wrapper .uagb-svg-wrapper:hover{box-shadow: 0px 0px 0 #00000070 ;} .uagb-block-3c223d05.uagb-icon-wrapper .uagb-svg-wrapper:focus-visible{box-shadow: 0px 0px 0 #00000070 ;}@media only screen and (max-width: 976px) { .uagb-block-3c223d05.uagb-icon-wrapper .uagb-svg-wrapper{display: inline-flex;}}@media only screen and (max-width: 767px) { .uagb-block-3c223d05.uagb-icon-wrapper .uagb-svg-wrapper{display: inline-flex;}}.wp-block-uagb-container.uagb-block-e5b2e3b1 .uagb-container__shape-top svg{width: calc( 100% + 1.3px );}.wp-block-uagb-container.uagb-block-e5b2e3b1 .uagb-container__shape.uagb-container__shape-top .uagb-container__shape-fill{fill: rgba(51,51,51,1);}.wp-block-uagb-container.uagb-block-e5b2e3b1 .uagb-container__shape-bottom svg{width: calc( 100% + 1.3px );}.wp-block-uagb-container.uagb-block-e5b2e3b1 .uagb-container__shape.uagb-container__shape-bottom .uagb-container__shape-fill{fill: rgba(51,51,51,1);}.wp-block-uagb-container.uagb-block-e5b2e3b1 .uagb-container__video-wrap video{opacity: 1;}.wp-block-uagb-container.uagb-is-root-container .uagb-block-e5b2e3b1{max-width: 100%;width: 100%;}.wp-block-uagb-container.uagb-is-root-container.alignfull.uagb-block-e5b2e3b1 > .uagb-container-inner-blocks-wrap{--inner-content-custom-width: min( 100%, 1200px);max-width: var(--inner-content-custom-width);width: 100%;flex-direction: column;align-items: center;justify-content: center;flex-wrap: nowrap;row-gap: 20px;column-gap: 20px;}.wp-block-uagb-container.uagb-block-e5b2e3b1{box-shadow: 0px 0px   #00000070 ;padding-top: 10px;padding-bottom: 10px;padding-left: 10px;padding-right: 10px;margin-top:  !important;margin-bottom:  !important;overflow: visible;order: initial;border-color: inherit;row-gap: 20px;column-gap: 20px;}@media only screen and (max-width: 976px) {.wp-block-uagb-container.uagb-is-root-container .uagb-block-e5b2e3b1{width: 100%;}.wp-block-uagb-container.uagb-is-root-container.alignfull.uagb-block-e5b2e3b1 > .uagb-container-inner-blocks-wrap{--inner-content-custom-width: min( 100%, 1024px);max-width: var(--inner-content-custom-width);width: 100%;}.wp-block-uagb-container.uagb-block-e5b2e3b1{padding-top: 10px;padding-bottom: 10px;padding-left: 10px;padding-right: 10px;margin-top:  !important;margin-bottom:  !important;order: initial;}}@media only screen and (max-width: 767px) {.wp-block-uagb-container.uagb-is-root-container .uagb-block-e5b2e3b1{max-width: 100%;width: 100%;}.wp-block-uagb-container.uagb-is-root-container.alignfull.uagb-block-e5b2e3b1 > .uagb-container-inner-blocks-wrap{--inner-content-custom-width: min( 100%, 767px);max-width: var(--inner-content-custom-width);width: 100%;flex-wrap: wrap;}.wp-block-uagb-container.uagb-block-e5b2e3b1{padding-top: 10px;padding-bottom: 10px;padding-left: 10px;padding-right: 10px;margin-top:  !important;margin-bottom:  !important;order: initial;}}\";s:2:\"js\";s:2048:\"document.addEventListener(\"DOMContentLoaded\", function(){ var ssLinksParent = document.querySelector( '.uagb-block-015f0124' );\nssLinksParent?.addEventListener( 'keyup', function ( e ) {\nvar link = e.target.closest( '.uagb-ss__link' );\nif ( link && e.keyCode === 13 ) {\n\thandleSocialLinkClick( link );\n}\n});\n\nssLinksParent?.addEventListener( 'click', function ( e ) {\nvar link = e.target.closest( '.uagb-ss__link' );\nif ( link ) {\n\thandleSocialLinkClick( link );\n}\n});\n\nfunction handleSocialLinkClick( link ) {\nvar social_url = link.dataset.href;\nvar target = \"\";\nif ( social_url == \"mailto:?body=\" ) {\n\ttarget = \"_self\";\n}\nvar request_url = \"\";\nif ( social_url.indexOf(\"\/pin\/create\/link\/?url=\") !== -1 ) {\n\trequest_url = social_url + encodeURIComponent( window.location.href ) + \"&media=\" + 'https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process.webp';\n} else {\n\trequest_url = social_url + encodeURIComponent( window.location.href );\n}\nwindow.open( request_url, target );\n}\n\t\t\t\twindow.addEventListener( 'DOMContentLoaded', () => {\n\t\t\t\t\tconst blockScope = document.querySelector( '.uagb-block-2b67c985' );\n\t\t\t\t\tif ( ! blockScope ) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\n\t\t\t\t\tconst anchorElement = blockScope.querySelector('a');\n\t\t\t\t\tif (!anchorElement) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t} \n\n\t\t\t\t\t \n\t\t\t\t\tblockScope.addEventListener('keydown', (event) => {\n\t\t\t\t\t\tif ( 13 === event.keyCode || 32 === event.keyCode ) {\n\t\t\t\t\t\t\tevent.preventDefault();\n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\tanchorElement.click();\t\n\t\t\t\t\t\t}\n\t\t\t\t\t} );\n\t\t\t\t} );\n\t\t\t\t\t\t\twindow.addEventListener( 'DOMContentLoaded', () => {\n\t\t\t\t\tconst blockScope = document.querySelector( '.uagb-block-3c223d05' );\n\t\t\t\t\tif ( ! blockScope ) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\n\t\t\t\t\tconst anchorElement = blockScope.querySelector('a');\n\t\t\t\t\tif (!anchorElement) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t} \n\n\t\t\t\t\t \n\t\t\t\t\tblockScope.addEventListener('keydown', (event) => {\n\t\t\t\t\t\tif ( 13 === event.keyCode || 32 === event.keyCode ) {\n\t\t\t\t\t\t\tevent.preventDefault();\n\t\t\t\t\t\t\t \n\t\t\t\t\t\t\tanchorElement.click();\t\n\t\t\t\t\t\t}\n\t\t\t\t\t} );\n\t\t\t\t} );\n\t\t\t });\";s:18:\"current_block_list\";a:21:{i:0;s:14:\"core\/paragraph\";i:1;s:12:\"core\/heading\";i:2;s:9:\"core\/list\";i:3;s:14:\"core\/list-item\";i:4;s:10:\"core\/image\";i:5;s:11:\"core\/search\";i:6;s:10:\"core\/group\";i:7;s:17:\"core\/latest-posts\";i:8;s:20:\"core\/latest-comments\";i:9;s:13:\"core\/archives\";i:10;s:15:\"core\/categories\";i:11;s:10:\"core\/embed\";i:12;s:17:\"uagb\/social-share\";i:13;s:23:\"uagb\/social-share-child\";i:14;s:19:\"uagb\/call-to-action\";i:15;s:14:\"uagb\/icon-list\";i:16;s:20:\"uagb\/icon-list-child\";i:17;s:14:\"uagb\/container\";i:18;s:9:\"uagb\/icon\";i:19;s:17:\"core\/social-links\";i:20;s:16:\"core\/social-link\";}s:8:\"uag_flag\";b:1;s:11:\"uag_version\";s:10:\"1776063796\";s:6:\"gfonts\";a:0:{}s:10:\"gfonts_url\";s:0:\"\";s:12:\"gfonts_files\";a:0:{}s:14:\"uag_faq_layout\";b:0;}"],"_elementor_page_assets":["a:0:{}"],"_uag_css_file_name":["uag-css-4673.css"],"_uag_js_file_name":["uag-js-4673.js"]},"uagb_featured_image_src":{"full":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process.webp",800,533,false],"thumbnail":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process-150x150.webp",150,150,true],"medium":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process-300x200.webp",300,200,true],"medium_large":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process-768x512.webp",768,512,true],"large":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process.webp",800,533,false],"1536x1536":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process.webp",800,533,false],"2048x2048":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process.webp",800,533,false],"trp-custom-language-flag":["https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Step-by-Step-HDI-PCB-Blind-and-Buried-Via-Process-18x12.webp",18,12,true]},"uagb_author_info":{"display_name":"Philifast","author_link":"https:\/\/flj-pcb.com\/cs\/author\/2475017442jygmail-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Below is the English translation. I used clear, simple wording and basic linking words (and, but, so, then, because). I [&hellip;]","_links":{"self":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts\/4673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/comments?post=4673"}],"version-history":[{"count":1,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts\/4673\/revisions"}],"predecessor-version":[{"id":4680,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts\/4673\/revisions\/4680"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/media\/4678"}],"wp:attachment":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/media?parent=4673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/categories?post=4673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/tags?post=4673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}