Bayyanawa yana nufin cewa a ƙarƙashin hasken ultraviolet, mai ɗaukar hoto yana ɗaukar makamashin hasken kuma ya rushe zuwa radicals kyauta, sannan kuma radicals free radicals ya fara photopolymerization monomer don aiwatar da polymerization da crosslinking dauki. Gabaɗaya fallasa ana aiwatar da shi a cikin na'ura mai ɗaukar hoto ta atomatik mai gefe biyu. Yanzu ana iya raba na'ura mai ɗaukar hoto zuwa mai sanyaya iska da kuma sanyaya ruwa bisa ga hanyar sanyaya na tushen haske.

Abubuwan Da Suka Shafi Ingancin Hoton Bayyanawa

Bugu da ƙari ga aikin fim ɗin photoresist, abubuwan da suka shafi ingancin hotunan hotuna sune zaɓi na hasken haske, kula da lokacin bayyanar (yawan fallasa), da ingancin faranti na hoto.

1) Zaɓin tushen haske

Kowane nau'i na fim yana da nasa na musamman na yanayin sha, kuma kowane nau'in tushen haske yana da nasa na'ura mai ban mamaki. Idan babban kololuwar juzu'i na wani nau'in fim ɗin zai iya haɗuwa ko galibi ya mamaye babban kololuwar fitowar haske na wani tushen haske, su biyun sun dace sosai kuma tasirin fallasa shine mafi kyau.

Matsakaicin ɗaukar hoto na fim ɗin busasshen gida yana nuna cewa yanki mai ɗaukar hoto shine 310-440 nm (nanometer). Daga spectral makamashi rarraba da dama haske kafofin, za a iya gani cewa zabar fitilar, high matsa lamba mercury fitilar, da aidin gallium fitilar da in mun gwada da girma dangi tsanani tsanani kewayon 310-440nm, wanda shi ne manufa haske tushen ga. bayyanar fim. Fitilolin Xenon ba su dace da su babayyanana busassun fina-finai.

Bayan an zaɓi nau'in tushen hasken, ya kamata kuma a yi la'akari da tushen hasken mai ƙarfi. Saboda tsananin ƙarfin haske, babban ƙuduri, da ɗan gajeren lokacin bayyanarwa, matakin nakasar zafi na farantin hoto shima ƙarami ne. Bugu da ƙari, ƙirar fitilu kuma yana da mahimmanci. Wajibi ne a yi ƙoƙari don sanya abin da ya faru ya zama daidai kuma daidai, don kaucewa ko rage mummunan sakamako bayan fallasa.

2) Sarrafa lokacin fallasa (yawan fallasa)

A lokacin aiwatar da fallasa, da photopolymerization na fim din ba "daya-harbi" ko "daya- fallasa", amma gaba daya ya wuce ta matakai uku.

Saboda toshewar iskar oxygen ko wasu ƙazanta masu cutarwa a cikin membrane, ana buƙatar tsari na shigarwa, wanda radicals na kyauta da aka samar ta hanyar lalatawar mai farawa ana cinye su ta hanyar iskar oxygen da ƙazanta, kuma polymerization na monomer yana da kaɗan. Duk da haka, lokacin da lokacin shigarwa ya ƙare, photopolymerization na monomer yana ci gaba da sauri, kuma dankon fim ɗin yana ƙaruwa da sauri, yana gabatowa matakin canji kwatsam. Wannan shine matakin saurin amfani da monomer na hotuna, kuma wannan matakin shine ke haifar da mafi yawan bayyanarwa yayin aiwatar da fallasa. Ma'auni na lokaci kadan ne. Lokacin da aka cinye yawancin monomer masu ɗaukar hoto, yana shiga yankin raguwa na monomer, kuma an gama ɗaukar hoto na photopolymerization a wannan lokacin.

Daidaitaccen iko na lokacin bayyanarwa shine muhimmiyar mahimmanci wajen samun kyakkyawan fim ɗin bushewa yana tsayayya da hotuna. Lokacin da bayyanar ba ta isa ba, saboda rashin cikar polymerization na monomers, a lokacin tsarin ci gaba, fim ɗin m ya kumbura kuma ya zama mai laushi, layin ba su bayyana ba, launi yana da laushi, har ma da lalata, kuma fim din ya yi tsalle a lokacin da aka rigaya ya rigaya. -plating ko electroplating tsari. , tsintsaye, ko ma faɗuwa. Lokacin da fallasa ya yi yawa, zai haifar da matsaloli kamar wahalar haɓakawa, fim ɗin da ba a taɓa gani ba, da sauran manne. Abin da ya fi tsanani shi ne bayyanar da ba daidai ba zai haifar da karkatacciyar faɗin layin hoto. Yawaitar da yawa za ta yi bakin ciki da layukan zanen ƙirar kuma ya sa layin bugu da etching su yi kauri. Akasin haka, rashin isasshen haske zai sa layin zanen ƙirar ya zama bakin ciki. M don sa fitattun layukan da aka buga su zama sirara.