Dab tsi yog Rigid Flex PCB Stackup

Nyob rau hauv lub ntiaj teb no technologies ceev-paced, cov khoom siv hluav taws xob tau dhau los ua ntau thiab ntau dua thiab compact. Txhawm rau ua kom tau raws li qhov xav tau ntawm cov khoom siv niaj hnub no, cov ntawv luam tawm Circuit Court boards (PCBs) txuas ntxiv txhim kho thiab koom nrog cov txheej txheem tsim qauv tshiab. Ib qho kev siv thev naus laus zis yog nruj flex pcb stackup, uas muaj ntau yam zoo ntawm kev hloov pauv thiab kev ntseeg tau.Cov lus qhia dav dav no yuav tshawb xyuas seb qhov kev sib tw nruj-flex circuit board stackup yog dab tsi, nws cov txiaj ntsig, thiab kev tsim kho.

Ua ntej dhia mus rau hauv cov ntsiab lus, cia peb xub mus hla cov hauv paus ntawm PCB stackup:

PCB stackup yog hais txog cov txheej txheem ntawm cov txheej txheem sib txawv hauv ib lub PCB. Nws koom nrog kev sib txuas ntawm ntau yam ntaub ntawv los tsim cov rooj sib tham multilayer uas muab kev sib txuas hluav taws xob. Raws li kev lig kev cai, nrog rau ib qho nyuaj PCB stackup, tsuas yog cov ntaub ntawv nruj yog siv rau tag nrho lub rooj tsavxwm. Txawm li cas los xij, nrog kev qhia txog cov ntaub ntawv hloov tau yooj yim, lub tswv yim tshiab tau tshwm sim - nruj-flex PCB stackup.

Yog li, dab tsi tiag tiag yog ib qho rigid-flex laminate?

Lub rigid-flex PCB stackup yog hybrid Circuit Court board uas sib txuas cov ntaub ntawv PCB nruj thiab hloov tau. Nws muaj alternating nruj thiab saj zawg zog khaubncaws sab nraud povtseg, cia lub Rooj Tswjhwm Saib yuav khoov los yog flex raws li xav tau thaum tuav nws cov qauv kev ncaj ncees thiab hluav taws xob functionality. Qhov kev sib xyaw tshwj xeeb no ua rau nruj-flex PCB stackups zoo tagnrho rau cov ntawv thov uas qhov chaw tseem ceeb thiab kev khoov yuav tsum tau muaj, xws li hnav khaub ncaws, khoom siv dav hlau, thiab cov khoom siv kho mob.

Tam sim no, cia peb tshawb nrhiav cov txiaj ntsig ntawm kev xaiv qhov nruj-flex PCB stackup rau koj cov khoom siv hluav taws xob.

Ua ntej, nws qhov yooj yim tso cai rau lub rooj tsavxwm kom haum rau hauv qhov chaw nruj thiab ua raws li cov duab tsis xwm yeem, ua kom qhov chaw muaj ntau tshaj plaws. Qhov kev hloov pauv no kuj txo qhov loj thiab qhov hnyav ntawm lub cuab yeej los ntawm kev tshem tawm qhov xav tau ntawm cov khoom sib txuas thiab txuas ntxiv. Tsis tas li ntawd, qhov tsis muaj cov khoom sib txuas txo qis cov ntsiab lus ntawm qhov tsis ua haujlwm, nce kev ntseeg tau. Tsis tas li ntawd, qhov txo qis hauv kev xaim txhim kho cov teeb liab kev ncaj ncees thiab txo cov teeb meem electromagnetic cuam tshuam (EMI).

Kev tsim kho ntawm ib qho nyuaj-flex PCB stackup suav nrog ntau lub ntsiab lus tseem ceeb:

Nws feem ntau muaj ntau txheej txheej nruj sib cuam tshuam los ntawm cov txheej txheem yooj yim. Tus naj npawb ntawm cov khaubncaws sab nraud povtseg nyob ntawm qhov nyuaj ntawm kev tsim Circuit Court thiab qhov xav tau ua haujlwm. Cov khaubncaws sab nraud povtseg feem ntau muaj cov qauv FR-4 lossis cov laminates kub, thaum cov khaubncaws sab nraud povtseg yog polyimide lossis cov ntaub ntawv zoo sib xws. Txhawm rau kom muaj kev sib txuas hluav taws xob zoo ntawm cov txheej txheem nruj thiab hloov tau yooj yim, ib qho tshwj xeeb ntawm cov nplaum hu ua anisotropic conductive adhesive (ACA) yog siv. Cov nplaum no muab ob qho tib si hluav taws xob thiab khoom siv sib txuas, kom ntseeg tau tias kev ua tau zoo.

Txhawm rau kom nkag siab txog cov qauv ntawm cov txheej txheem nruj-flex PCB pawg, ntawm no yog qhov ua tiav ntawm 4-txheej nruj-flex PCB pawg thawj coj saib:

Sab saum toj txheej:
Green solder mask yog txheej tiv thaiv siv rau ntawm PCB (Printed Circuit Board)
Txheej 1 (Signal Layer):
Base Copper txheej nrog Plated Copper kab.
Txheej 2 (Inner Layer / dielectric txheej):
FR4: Qhov no yog cov khoom siv insulating siv hauv PCBs, muab kev txhawb nqa thiab kev sib cais hluav taws xob.
Txheej 3 (Flex Layer):
PP: Polypropylene (PP) nplaum txheej tuaj yeem muab kev tiv thaiv rau lub rooj tsavxwm
Txheej 4 (Flex Layer):
Npog txheej PI: Polyimide (PI) yog cov khoom siv tau yooj yim thiab kub-resistant siv los ua cov txheej txheem tiv thaiv saum toj kawg nkaus hauv flex feem ntawm PCB.
Npog txheej AD: muab kev tiv thaiv rau cov khoom siv hauv qab los ntawm kev puas tsuaj los ntawm ib puag ncig sab nraud, tshuaj lom neeg lossis khawb lub cev
Txheej 5 (Flex Layer):
Base Copper txheej: Lwm txheej ntawm tooj liab, feem ntau yog siv rau cov teeb liab kab lossis hluav taws xob faib.
Txheej 6 (Flex Layer):
PI: Polyimide (PI) yog cov khoom siv tau yooj yim thiab kub-resistant siv los ua txheej txheej hauv qhov flex ntawm PCB.
Txheej 7 (Flex Layer):
Base Copper txheej: Tsis tau lwm txheej tooj liab, feem ntau yog siv rau cov teeb liab kab lossis hluav taws xob faib.
Txheej 8 (Flex Layer):
PP: Polypropylene (PP) yog cov khoom siv tau yooj yim siv nyob rau hauv flex feem ntawm PCB.
Cowerlayer AD: muab kev tiv thaiv rau cov khoom siv hauv qab los ntawm kev puas tsuaj los ntawm ib puag ncig sab nraud, tshuaj lom neeg lossis khawb lub cev
Npog txheej PI: Polyimide (PI) yog cov khoom siv tau yooj yim thiab kub-resistant siv los ua cov txheej txheem tiv thaiv saum toj kawg nkaus hauv flex feem ntawm PCB.
Kauj Ruam 9 (Inner Layer):
FR4: Lwm txheej ntawm FR4 suav nrog rau kev txhawb nqa khoom siv ntxiv thiab kev sib cais hluav taws xob.
Kauj Ruam 10 (Cov Txheej Txheem Hauv Qab):
Base Copper txheej nrog Plated Copper kab.
Hauv qab txheej:
Green soldermask.

Thov nco ntsoov tias kom muaj kev ntsuam xyuas ntau dua thiab kev txiav txim siab tsim tshwj xeeb, nws raug nquahu kom sab laj nrog PCB tus tsim lossis cov chaw tsim khoom uas tuaj yeem muab cov ncauj lus kom ntxaws thiab cov lus pom zoo raws li koj cov kev xav tau tshwj xeeb thiab kev txwv.

Hauv cov ntsiab lus:

Rigid flex PCB stackup yog ib qho kev daws teeb meem tshiab uas muab cov khoom zoo ntawm cov khoom siv PCB nruj thiab hloov tau. Nws yooj yim, compactness thiab kev ntseeg tau ua rau nws haum rau ntau yam kev siv uas xav tau qhov chaw optimization thiab dynamic dabtsi yog khoov. Kev nkag siab txog cov hauv paus ntawm kev nruj-flex stackups thiab lawv cov kev tsim kho tuaj yeem pab koj txiav txim siab paub thaum tsim thiab tsim khoom siv hluav taws xob. Raws li kev siv thev naus laus zis txuas ntxiv mus, qhov kev thov rau nruj-flex PCB stackup yuav tsis muaj qhov xav tau nce ntxiv, tsav kev txhim kho ntxiv hauv daim teb no.