Hauv tsab ntawv tshaj tawm no, peb yuav tshawb nrhiav cov ntaub ntawv siv hauv PCBs hloov tau yooj yim thiab nkag mus rau hauv cov txheej txheem tsim kho, nthuav tawm cov thev naus laus zis zoo kawg tom qab cov rooj sib tham ntau yam.
Flexible printed circuit boards (PCBs) tau hloov pauv kev lag luam hluav taws xob los ntawm kev muab cov kev hloov pauv hloov pauv rau cov tsoos PCBs. Nws cov khoom siv tshwj xeeb thiab cov khoom siv txhim kho kev tsim qauv yooj yim, kev ntseeg tau thiab kev ua haujlwm.
Cov ntaub ntawv siv hauv cov ntawv luam tawm yooj yim
Flexible PCBs yog tsim los ntawm kev sib xyaw ntawm cov ntaub ntawv sib txawv los ua kom lawv yooj yim thiab kav ntev. Cia peb ua tib zoo saib qee cov ntaub ntawv tseem ceeb siv hauv nws txoj kev tsim kho:
1. Cov khoom siv hauv paus:
Lub hauv paus ntawm txhua qhov hloov pauv PCB yog cov khoom siv substrate. Cov ntaub ntawv siv feem ntau suav nrog polyimide (PI), uas hloov tau yooj yim thiab kub-resistant polymer. PI muaj lub zog zoo txhua yam, tshuaj lom neeg thiab rwb thaiv tsev. Lwm cov khoom siv substrate nrov yog polyester (PET), uas muaj kev hloov pauv ntawm tus nqi qis. Cov ntaub ntawv no tso cai rau cov laug cam tuaj yeem khoov, ntswj thiab hloov mus rau cov duab sib txawv thiab qhov ntau thiab tsawg.
2. Cov khoom siv hluav taws xob:
Txhawm rau tsim kev sib txuas hluav taws xob ntawm cov khoom siv hluav taws xob sib txawv, cov khoom siv hluav taws xob xws li tooj liab yog siv. Copper yog ib qho khoom siv hluav taws xob zoo tshaj plaws nrog kev hloov pauv zoo thiab tsim nyog siv rau hauv cov ntawv luam tawm yooj yim. Nyias tooj liab ntawv ci yog laminated rau lub substrate los tsim cov circuits thiab cov kab uas yuav tsum tau rau kev sib txuas hluav taws xob.
3. Cov khoom siv npog:
Cov khoom siv overlay ua haujlwm ua ib txheej tiv thaiv ntawm lub PCB hloov tau. Lawv muab rwb thaiv tsev, kev tiv thaiv txhua yam, thiab tiv thaiv ib puag ncig xws li ya raws, plua plav, thiab tshuaj lom neeg. Polyimide overlays yog dav siv vim lawv qhov kub thiab txias stability, yooj thiab durability.
Kev tsim kho thev naus laus zis ntawm cov tshuab luam ntawv hloov tau yooj yim
Cov txheej txheem tsim kho ntawm ib qho kev hloov pauv PCB muaj ob peb kauj ruam sib txawv. Cia peb tshawb xyuas txhua theem kom ntxaws:
1. Kev npaj substrate:
Thawj kauj ruam hauv kev tsim lub PCB hloov tau yog los npaj cov khoom siv substrate. Cov khoom siv substrate xaiv, txawm tias polyimide lossis polyester, yog kho los txhim kho nws qhov roughness thiab cov khoom nplaum. Txoj kev kho no ua kom yooj yim sib txuas ntawm cov khoom siv hluav taws xob rau lub substrate.
2. Circuit Court tsim thiab layout:
Tom ntej no, siv computer-aided design (CAD) software los tsim lub Circuit Court tsim thiab layout. Kev tsim qauv txiav txim siab qhov kev tso kawm ntawm cov khoom siv hluav taws xob ntawm lub rooj tsav xwm hauv Circuit Court thiab kev sib txuas ntawm hluav taws xob. Cov kauj ruam no yuav tsum tau ua tib zoo xav txog yam xws li teeb liab kev ncaj ncees, kev faib hluav taws xob, thiab kev tswj xyuas thermal.
3. Etching thiab plating:
Tom qab kev tsim hluav taws xob ua tiav, cov txheej txheem etching yog ua rau ntawm lub substrate. Siv cov tshuaj siv tshuaj los xaiv tshem tawm cov tooj liab ntau dhau, tawm hauv cov kab uas xav tau thiab cov ntaub qhwv. Tom qab etching, Circuit Court board yog plated nrog ib tug nyias txheej ntawm tooj liab, uas txhim khu txoj kev conductive thiab xyuas kom meej ib tug ruaj khov hluav taws xob kev twb kev txuas.
4. Solder daim npog qhov ncauj thiab tshuaj ntsuam luam ntawv:
Solder mask yog txheej tiv thaiv uas yog siv rau saum npoo ntawm lub rooj tsavxwm. Nws tiv thaiv cov kab tooj liab los ntawm oxidation, solder bridging, thiab lwm yam cuam tshuam sab nraud. Nws yog tom qab ntawd tshuaj ntsuam luam tawm los ntxiv cov cim, xws li cov cim npe lossis cov cim polarity, los pab txhawb kev sib dhos thiab kev daws teeb meem.
5. Kev teeb tsa thiab kev sib dhos:
Cov khoom siv hluav taws xob tau teeb tsa rau ntawm PCB hloov pauv tau siv cov tshuab siv hluav taws xob nto mount tshuab (SMT) lossis cov txheej txheem sib dhos. solder lub Cheebtsam rau cov ntaub so ntswg siv cov txheej txheem soldering xws li reflow los yog yoj soldering. Ua tib zoo saib xyuas kom ntseeg tau tias cov khoom sib xyaw ua ke kom raug thiab ruaj ntseg txuas.
6. Kev kuaj thiab tshuaj xyuas:
Thaum lub rooj sib tham hauv Circuit Court tau sib sau ua ke, nws dhau los ntawm kev sim thiab tshuaj xyuas cov txheej txheem kom ntseeg tau tias nws ua haujlwm tau zoo thiab zoo. Ua cov kev xeem tsis siv neeg xws li In-Circuit Testing (ICT) lossis Automated Optical Inspection (AOI) txhawm rau txheeb xyuas tej yam tsis xws luag lossis kev sib txuas tsis raug. Cov kev ntsuam xyuas no pab txheeb xyuas thiab kho cov teeb meem ua ntej cov khoom kawg raug xa mus.
Flexible PCBs tau dhau los ua thawj qhov kev xaiv rau cov ntawv thov uas qhov chaw txwv, qhov hnyav txo thiab qhov yooj yim yog qhov tseem ceeb. Nws cov khoom siv tshwj xeeb thiab cov txheej txheem tsim kho pub rau kev kho kom haum, txo qhov loj me thiab txhim kho kev ua haujlwm. Los ntawm kev lag luam aerospace mus rau cov cuab yeej kho mob thiab cov neeg siv khoom siv hluav taws xob, cov khoom siv hluav taws xob hloov tau yooj yim tau tso lawv cov cim hauv ntau qhov chaw.
Hauv cov ntsiab lus
Flexible PCBs muaj ntau yam zoo vim lawv cov qauv thiab cov ntaub ntawv.Kev sib xyaw ua ke ntawm cov khoom siv hauv paus, cov khoom siv hluav taws xob thiab kev tiv thaiv npog ua kom yooj yim, durability thiab kev ntseeg tau. Kev nkag siab txog cov txheej txheem kev tsim kho ntawm cov khoom siv hluav taws xob hloov pauv hloov pauv ua rau peb nkag siab txog cov thev naus laus zis zoo kawg tom qab cov khoom siv hluav taws xob ntau yam. Raws li thev naus laus zis txuas ntxiv mus, hloov pauv PCBs yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev tsim lub neej yav tom ntej ntawm kev lag luam hluav taws xob.
Post lub sij hawm: Oct-11-2023
Rov qab
