2-Layer Flexible PCB - FPC Design ndi Prototyping

Mawu Oyamba

Flexible printed circuit boards (FPCs) akusintha makampani opanga zamagetsi, kupereka kusinthasintha kosayerekezeka ndi kuthekera kopanga. Pomwe kufunikira kwa zida zamagetsi zowoneka bwino komanso zopepuka zikupitilira kukula, ma FPC amatenga gawo lofunikira pakupangitsa mayankho anzeru komanso osinthika. Mwa mitundu yosiyanasiyana ya ma FPC, ma PCB osinthika a 2-wosanjikiza amawonekera chifukwa cha kusinthasintha kwawo komanso kugwiritsidwa ntchito kwawo m'mafakitale osiyanasiyana. Mu bukhuli latsatanetsatane, tiwona momwe ma PCB amasinthira magawo awiri, tiwona momwe amagwirira ntchito, zida, mawonekedwe, ndi kumaliza kwawo.

Mtundu wa malonda:2-Layer Flexible PCB

2-wosanjikiza flex PCB, yomwe imadziwikanso kuti yozungulira mbali ziwiri, ndi bolodi yosinthika yosindikizidwa yokhala ndi zigawo ziwiri zosiyanitsidwa ndi dielectric wosanjikiza. Kukonzekera uku kumapatsa opanga kusinthasintha kwa njira zotsata mbali zonse za gawo lapansi, zomwe zimapangitsa kuti pakhale zovuta komanso magwiridwe antchito. Kutha kuyika zigawo mbali zonse za bolodi kumapangitsa ma PCB a 2-wosanjikiza kukhala abwino kwa mapulogalamu omwe amafunikira kachulukidwe kagawo kakang'ono komanso zovuta zamalo.

Mapulogalamu

Kusinthasintha kwa 2-wosanjikiza ma PCB amawapangitsa kukhala oyenera kugwiritsa ntchito zosiyanasiyana m'mafakitale osiyanasiyana. Chimodzi mwazinthu zodziwika bwino za 2-layer flexible PCB ndi gawo la zamagetsi zamagalimoto. M'makampani oyendetsa magalimoto, kupulumutsa malo ndi kulemera ndizofunikira kwambiri, ndipo ma PCB a 2-wosanjikiza amapereka kusinthasintha kuti akwaniritse zofunikirazi. Amagwiritsidwa ntchito pamakina owongolera magalimoto, masensa, kuyatsa, kachitidwe ka infotainment, ndi zina zambiri. Makampani opanga magalimoto amadalira kulimba ndi kudalirika kwa ma PCB osinthika a 2-wosanjikiza kuti awonetsetse kuti zikuyenda bwino m'malo ovuta.

Kuphatikiza pa ntchito zamagalimoto, ma PCB osinthika a 2-wosanjikiza amagwiritsidwa ntchito kwambiri pamagetsi ogula, zida zamankhwala, zakuthambo ndi zida zamafakitale. Kutha kuzolowera mawonekedwe osakhazikika, kuchepetsa thupi ndikuwonjezera kudalirika kumawapangitsa kukhala ofunikira pamitundu yosiyanasiyana yamagetsi.

Zipangizo

2-Layer Flexible PCB Kusankha kwazinthu ndikofunikira kwambiri pakuzindikira momwe bolodi imagwirira ntchito, kudalirika, ndi kupangidwa kwake. Zida zoyambira zomwe zimagwiritsidwa ntchito popanga PCB yosinthika ya 2-layer ndi filimu ya polyimide (PI), mkuwa, ndi zomatira. Polyimide ndi gawo lapansi losankhidwa chifukwa cha kukhazikika kwake kwamafuta, kusinthasintha komanso kukana kutentha kwambiri. Copper zojambulazo ntchito ngati zakuthupi conductive, amene ali madutsidwe kwambiri ndi solderability. Zipangizo zomatira zimagwiritsidwa ntchito kumangiriza zigawo za PCB palimodzi, kuwonetsetsa kukhazikika kwamakina ndikusunga umphumphu wadera.

M'lifupi mwake, kutalika kwa mizere ndi makulidwe a bolodi

Popanga 2-wosanjikiza PCB yosinthika, m'lifupi mwake, kutalika kwa mizere ndi makulidwe a bolodi ndizofunika kwambiri, zomwe zimakhudza magwiridwe antchito ndi kupanga kwa bolodi. M'lifupi mzere m'lifupi ndi mizere katalikirana kwa 2-wosanjikiza flexible PCBs amatchulidwa ngati 0.2mm/0.2mm, kusonyeza m'lifupi osachepera kadambo conductive ndi katayanitsidwe pakati pawo. Miyeso iyi ndi yofunika kwambiri kuti zitsimikizire kukhulupirika kwa chizindikiro, kuwongolera kwa impedance, ndi kugulitsa kodalirika pakusokonekera. Kuphatikiza apo, makulidwe a bolodi a 0.2mm +/- 0.03mm amatenga gawo lofunikira pakuzindikira kusinthasintha, kupindika kozungulira komanso makina onse a 2-wosanjikiza flex PCB.

Kuchepa Kwa Mabowo Ndi Chithandizo Chapamwamba

Kukwaniritsa makulidwe olondola komanso osasinthasintha ndikofunikira pamapangidwe a PCB osinthika a 2-layer, makamaka kutengera kachitidwe kakang'ono ka zamagetsi. Kukula kochepa kwa dzenje la 0.1 mm kumawonetsa kuthekera kwa ma PCB a 2-wosanjikiza kuti athe kutengera zigawo zing'onozing'ono komanso zodzaza kwambiri. Kuphatikiza apo, chithandizo chapamwamba chimakhala ndi gawo lalikulu pakuwongolera magwiridwe antchito amagetsi komanso kugulitsa kwa PCB. Electroless Nickel Immersion Gold (ENIG) yokhala ndi makulidwe a 2-3uin ndichisankho chofala kwa ma PCB osinthika a 2-layer ndipo imapereka kukana kwa dzimbiri, kusalala, komanso kugulitsa. Chithandizo cha ENIG chapamwamba chimakhala chothandiza kwambiri pakupangitsa zida zowoneka bwino ndikuwonetsetsa kuti ma solder odalirika amalumikizana.

Impedans ndi Kulekerera

M'mapulogalamu othamanga kwambiri a digito ndi analogi, kuwongolera kwa impedance ndikofunikira kuti musunge kukhulupirika kwazizindikiro ndikuchepetsa kupotoza kwa ma sign. Ngakhale palibe mfundo zamtundu wa impedance zomwe zimaperekedwa, kuthekera kowongolera kutsekeka kwa 2-wosanjikiza flex PCB ndikofunikira kuti mukwaniritse zofunikira pamayendedwe apamagetsi. Kuphatikiza apo, kulolerana kumatchulidwa ngati ± 0.1mm, zomwe zikutanthauza kupatuka kovomerezeka panthawi yopanga. Kuwongolera kulolerana kolimba ndikofunikira pakuwonetsetsa kulondola komanso kusasinthika kwa chinthu chomaliza, makamaka pochita ndi mawonekedwe ang'onoang'ono ndi mapangidwe ovuta.

2 Layer Flexible PCB Prototyping process

Prototyping ndi gawo lofunika kwambiri pakukula kwa 2-layer flex PCB, kulola opanga kuti atsimikizire mapangidwe, magwiridwe antchito, ndi magwiridwe antchito asanayambe kupanga kwathunthu. Njira ya prototyping imaphatikizapo njira zingapo zofunika, kuphatikiza kutsimikizira kapangidwe kake, kusankha zinthu, kupanga, ndi kuyesa. Kutsimikizira kwapangidwe kumatsimikizira kuti bolodi imakwaniritsa zofunikira ndi magwiridwe antchito, pomwe kusankha kwazinthu kumaphatikizapo kusankha gawo lapansi loyenera, zida zoyendetsera zinthu ndi chithandizo chapamwamba potengera momwe mungagwiritsire ntchito komanso magwiridwe antchito.

Kupanga ma prototypes osinthika a 2-layer PCB kumaphatikizapo kugwiritsa ntchito zida zapadera ndi njira zopangira gawo lapansi losinthika, kugwiritsa ntchito ma conductive, ndikusonkhanitsa zigawozo. Njira zopangira zapamwamba monga kubowola kwa laser, plating yosankha ndi njira zowongolera za impedance zimagwiritsidwa ntchito kuti zikwaniritse zofunikira komanso magwiridwe antchito. Chojambulacho chikapangidwa, kuyesa mozama ndi kutsimikizira kumachitika kuti awone momwe magetsi amagwirira ntchito, kusinthasintha kwa makina komanso kudalirika pansi pazikhalidwe zosiyanasiyana. Ndemanga kuchokera pagawo la prototyping imathandizira kukhathamiritsa ndi kukonza, zomwe zimapangitsa kuti pakhale mawonekedwe olimba komanso odalirika a 2-layer flexible PCB okonzeka kupanga anthu ambiri.

2 Layer Flexible PCB - FPC Design ndi Prototyping process

Mapeto

Mwachidule, ma PCB a 2-layer flex flex PCBs amaimira njira zamakono zamakono zamakono zamakono, zomwe zimapereka kusinthasintha kosayerekezeka, kudalirika ndi ntchito. Magwiritsidwe ake osiyanasiyana, zida zapamwamba, mafotokozedwe ake enieni ndi njira zopangira ma prototyping zimapangitsa kuti ikhale yofunika kwambiri pamakampani opanga zamagetsi. Pamene ukadaulo ukupitilirabe kusinthika, ma PCB osinthika a 2-layer mosakayika atenga gawo lofunikira pakupangitsa kuti zida zamagetsi zomwe zikwaniritse zosowa za dziko lamakono lolumikizidwa. Kaya mumagalimoto, zamagetsi zamagetsi, zida zamankhwala kapena zakuthambo, mapangidwe ndi mawonekedwe a 2-layer flexible PCBs ndizofunikira kwambiri pakuyendetsa funde lotsatira laukadaulo wamagetsi.