Qhov "greening" ntawm Printed Circuit Boards (PCBs)- ua tiav ib puag ncig tus phooj ywg thoob plaws tag nrho cov khoom lag luam lub neej los ntawm kev siv cov ntaub ntawv ntsuab, kev tsim khoom huv si, thiab cov khoom siv rov ua dua tshiab - tau tshwm sim los ua ib qho kev taw qhia tseem ceeb rau kev lag luam txoj kev loj hlob.
Qhov kev pib no feem ntau yog tshwm sim los ntawm kev txais yuav ntau tus phooj ywg ib puag ncig txog PCB raw khoom, txheej txheem tsim khoom, thiab kev tswj cov khib nyiab. Kev lag luam PCB suav nrog cov txheej txheem tsim khoom nyuaj, qee qhov tuaj yeem tsim muaj kuab paug ib puag ncig; Yog li ntawd, kev kho mob ntawm cov pa phem no yog ib qho kev ua haujlwm nyuaj heev. Raws li lub ntiaj teb ib puag ncig zoo txuas ntxiv mus tsis zoo thiab pej xeem ib puag ncig kev paub tsis tu ncua, cov teb chaws loj thiab cov cheeb tsam thoob ntiaj teb tau tsim cov kev cai ib puag ncig rau PCB kev tsim khoom. Hauv kev teb, PCB kev lag luam tau tsim cov txheej txheem ntawm ib puag ncig. Tsav los ntawm qhov tseem ceeb rau kev txhim kho kom ruaj khov, yav tom ntej ntawm PCB kev tsim khoom tau nce mus rau "ntsuab" kev coj ua-tshwj xeeb, kev siv cov khoom tshiab eco-cov ntaub ntawv tus phooj ywg thiab txo cov pa phem- tsim cov txheej txheem.
Txhawm rau ua kom tau raws li cov kev xav tau tshwj xeeb- xws li siab - kev sib txuas ceev ceev -PCB kev tsim khoom tau ua rau muaj ntau yam txheej txheem tshwj xeeb. Piv txwv li, High-Density Interconnect (HDI) boards xav tau cov kauj ruam ntxiv-xws li laser drilling (los tsim micro- dig muag vias), los ntawm kev sau thiab plating, thiab ntau- kauj ruam lamination- kom ua tiav lawv cov kev sib txuas siab -. Flexible PCBs (FPCBs), hloov pauv, siv cov khoom siv hloov pauv tau yooj yim (xws li polyimide / PI) thiab siv "coverlay" zaj duab xis rau kev tiv thaiv, tsis yog lub npog ntsej muag feem ntau siv rau ntawm cov laug cam. Lwm cov txheej txheem tshwj xeeb- suav nrog cov uas cuam tshuam nrog qhov muag tsis pom thiab faus vias, dhau ntawm- hauv- cov cuab yeej thev naus laus zis, tuab tooj liab boards, thiab siab - lub rooj tsav xwm zaus (xws li, cov khoom siv PTFE)-txhua qhov tsim nyog rau lawv tus kheej kev tsim khoom tshwj xeeb.
Cov dej khib nyiab thiab cov dej khib nyiab tsim tawm thaum lub sijhawm tsim khoom PCB- xws li cov dej ntws tawm los ntawm kev ua haujlwm etching thiab electroplating, uas feem ntau muaj cov hlau hnyav - yuav tsum tau txais kev kho tshwj xeeb (xws li, dej nag, tshuaj lom neeg, thiab lwm yam) kom ntseeg tau tias lawv ua tau raws li cov qauv kev cai ua ntej tso tawm.
