Malangizo Ogwiritsira Ntchito TFT Color LCD Screens

Monga chipangizo chowonetsera zamagetsi molondola, zowonetsera za TFT zamtundu wa LCD zimakhala ndi zofunikira kwambiri pa chilengedwe. Pakugwiritsa ntchito tsiku ndi tsiku, kuwongolera kutentha ndiye chinthu chofunikira kwambiri. Mitundu yokhazikika nthawi zambiri imagwira ntchito mkati mwa 0°C mpaka 50°C, pomwe zinthu zamafakitale zimatha kupirira kutentha kwakukulu kuyambira -20°C mpaka 70°C. Kutentha kotsika kwambiri kungayambitse kuyankhidwa pang'onopang'ono kwa kristalo wamadzimadzi kapena kuwonongeka kwa makristalo, pomwe kutentha kwakukulu kungayambitse kusokonekera kwa chiwonetsero ndikufulumizitsa kukalamba kwa zigawo za TFT backlight. Ngakhale kutentha kosungirako kumatha kuchepetsedwa kufika -20°C mpaka 60°C, kusinthasintha kwadzidzidzi kwa kutentha kuyenera kupewedwabe. Chisamaliro chapadera chiyenera kuperekedwa popewa kuzizira komwe kumachitika chifukwa cha kusintha kwadzidzidzi kwa kutentha, chifukwa izi zingayambitse kuwonongeka kosasinthika kwa dera.

Kusamalira chinyezi n'kofunika kwambiri. Malo ogwirira ntchito ayenera kukhala ndi chinyezi cha 20% mpaka 80%, pomwe malo osungira ayenera kukhala pakati pa 10% ndi 60%. Chinyezi chochuluka chingayambitse dzimbiri la circuit ndi kukula kwa nkhungu, pomwe malo ouma kwambiri amawonjezera chiopsezo cha electrostatic discharge (ESD), chomwe chingawononge nthawi yomweyo zigawo zowonetsera zomwe zimakhala zofewa. Pogwira ntchito ndi sikirini m'malo ouma, njira zonse zotsutsana ndi static ziyenera kukhazikitsidwa, kuphatikizapo kugwiritsa ntchito zingwe zotsutsana ndi static wrist ndi malo ogwirira ntchito.

Kuunikira kumakhudzanso nthawi yayitali ya chinsalu. Kuyang'ana kwambiri kuwala kwamphamvu, makamaka kuwala kwa ultraviolet (UV), kumatha kuwononga ma polarizer ndi zosefera zamitundu, zomwe zimapangitsa kuti chiwonetsero chikhale chotsika. M'malo omwe kuwala kumakhala kwakukulu, kuwonjezera kuwala kwa TFT backlight kungakhale kofunikira, ngakhale izi zidzawonjezera kugwiritsa ntchito mphamvu ndikuchepetsa nthawi ya moyo wa kuwala. Chitetezo cha makina ndi chinthu china chofunikira kuganizira—zowonetsera za TFT ndizofooka kwambiri, ndipo ngakhale kugwedezeka pang'ono, kugwedezeka, kapena kupanikizika kosayenera kungayambitse kuwonongeka kosatha. Kutenga bwino kugwedezeka komanso kugawa mphamvu kuyenera kutsimikiziridwa panthawi yoyika.

Chitetezo cha mankhwala sichiyenera kunyalanyazidwa. Chophimbacho chiyenera kusungidwa kutali ndi zinthu zowononga, ndipo zotsukira zokha ndi zomwe ziyenera kugwiritsidwa ntchito—mowa kapena zosungunulira zina ziyenera kupewedwa kuti zisawononge zokutira pamwamba. Kusamalira nthawi zonse kuyeneranso kuphatikizapo kupewa fumbi, chifukwa fumbi losonkhanitsidwa silimangokhudza mawonekedwe okha komanso lingalepheretsenso kutaya kutentha kapena kuyambitsa mavuto a circuit. Mu ntchito zenizeni, ndibwino kutsatira mosamala magawo azachilengedwe omwe afotokozedwa mu datasheet yazinthu. Pamalo ovuta (monga mafakitale, magalimoto, kapena kugwiritsa ntchito panja), zinthu zamafakitale zomwe zimakhala zolimba nthawi yayitali ziyenera kusankhidwa. Pogwiritsa ntchito njira zowongolera zachilengedwe, chiwonetsero cha TFT chingathe kuchita bwino kwambiri komanso kukhala ndi moyo wautali.