Ukuvezwa kwemaski ye-solder kunye nenkqubo yophuhliso kwi Ibhodi PCB inkqubo yokuvelisa yibhodi yePCB enemaski yesolder emva kokuprintwa kwesikrini. Gubungela iipads kwibhodi ye-PCB ngefilimu ye-diazo ukwenzela ukuba bangayi kukhanya ngokukhanya kwe-ultraviolet ngexesha lenkqubo ye-exposure, kwaye i-solder yokumelana nokukhusela ifakwe ngokuqinileyo kwi-PCB ebusweni emva kokukhanya kwe-ultraviolet irradiation, kwaye iipads azibonakali. kukukhanya kwe-ultraviolet. Ukukhanya kwemitha kunokuveza iipads zobhedu ukwenzela ukuba ilothe kunye netoti zisetyenziswe ngexesha lokulinganisa umoya oshushu.

Injongo yokuvezwa kwebhodi yesiphaluka kukukhanyisa kunye nokuthintela ukukhanya kwe-ultraviolet. Inxalenye ecacileyo yefilimu kunye nefilimu eyomileyo ifumana impendulo ye-polymerization optical, oko kukuthi, phantsi kwe-ultraviolet irradiation, i-photoinitiator ithatha amandla okukhanya kwaye ibole ibe yi-radicals yamahhala, kwaye i-radicals yamahhala iphinda iqalise ukukhanya kwakhona. I-polymerized monomer idlula kwi-polymerization kunye ne-cross-linking reaction, kwaye yenza isakhiwo se-macromolecular esinganyibilikiyo kwisisombululo se-alkali esixutywe emva kokusabela. Ifilimu inomdaka, ukukhanya kwe-ultraviolet akukwazi ukungena, kwaye ifilimu ayikwazi ukwenza i-polymerization ye-optical kunye nefilimu eyomileyo ehambelana nayo. Utyhileko ngokuqhelekileyo luqhutywa kumatshini ozivelelayo onamacala amabini.

Kukho iindidi ezimbini zokuvezwa: ukubonakaliswa kwesekethe kunye nokuvezwa kwemaski ye-solder. Umsebenzi kukunyanga indawo yendawo ye-irradiated ngokusebenzisa ukukhanya kwe-ultraviolet irradiation, kwaye emva koko uyiphuhlise ukwenza iphethini yesiphaluka okanye i-solder resistant pattern.

Inkqubo yokuvezwa kwesekethe kukubeka ifilimu ye-photosensitive kwibhodi yobhedu, kwaye emva koko uyibeke kunye nepateni yesekethe engalunganga kwaye uyiveze ngemisebe ye-ultraviolet. Ifilimu ye-photosensitive ekhanyiswa yimitha ye-ultraviolet iya kusabela kwi-polymerization. Ifilimu ye-photosensitive apha inokuxhathisa i-Na2CO3 i-alkali ebuthakathaka ngexesha lophuhliso. Isisombululo sihlanjwe, kwaye inxalenye engabonakaliyo iya kuhlanjululwa ngexesha lophuhliso. Ngale ndlela, iphethini yesiphaluka kwifilimu engalunganga idluliselwa ngempumelelo kwibhodi yobhedu;

Inkqubo yokuvezwa kwemaski ye-solder iyafana: sebenzisa ipeyinti ye-photosensitive kwibhodi yesiphaluka, uze ugubungele iindawo ezifuna ukuthengiswa ngexesha lokuvezwa, ukwenzela ukuba iipads zivelele emva kophuhliso.