Lub ntsej muag ua kua iav ci tau muab faib ua peb qib: A, B, thiab C raws li lawv qhov zoo. Cov qhab-nees ua raws cov lej tuag. Txawm li cas los xij, tsis muaj cov kev cai nyuaj thiab ceev hauv ntiaj teb, yog li cov qauv muab qhab nia ntawm ntau lub teb chaws thiab thaj chaw tsis zoo ib yam. Feem ntau, cov duab tshav LCD uas tsawg dua 5 tuag pixels tau faib ua Class A, ntau dua 5 tuag pixels thiab tsawg dua 10 tau faib ua Class B, thiab cov vaj huam sib luag LCD nrog ntau dua 10 tuag pixels tau faib ua Class C. Hauv txoj cai, A -vaj huam sib luag puas yooj yim tshaj plaws rau cov chaw tsim khoom lag luam, tab sis nws yog kev tsis pom zoo tias LCD panels yuav tsim B-qib panels, yog li feem ntau ntawm B-qib panels no yuav tsum tau zom los ntawm lwm cov lag luam zaub tso tawm. C-qib vaj huam sib luag yog qhov tsis tsim nyog rau cov tsim kev lag luam, thiab feem ntau ntawm cov kua siv lead ua kua uas txiav rau thaj chaw me me yog siv rau lwm qhov chaw. Txawm li cas los xij, muaj ntau tsawg ntawm LCD zaub tuam ntxhab uas yuav siv C-qib vaj huam sib luag. Ob lossis peb xyoos dhau los, muaj cua daj cua dub ntawm cov nqi qes thiab qis LCDs cuam tshuam kev ua lag luam.
Tau kawg, ntxiv rau tus naj npawb ntawm cov tuag pixels, kev ua tau zoo ntawm B-qib thiab C-qib vaj huam sib luag nyob rau lwm qhov tsis tuaj yeem piv nrog cov qib A-qib. Piv nrog A-qib vaj huam sib luag, qhov ci ci ntawm B-qib thiab C-qib vaj huam sib luag yog tsis sib luag, kev sib deev xim yog tsis tshua txaus, lub peev xim ua kom muaj peev xwm tsis zoo, thiab cov tsos kuj tseem muaj kev puas ntsoog. Ntxiv nrog rau kev siv cov cuab yeej tshaj lij los txiav txim siab qib theem ntawm cov vaj huam sib luag ntawm LCD, cov neeg siv khoom kuj tuaj yeem ua rau pom lub ntsej muag pom nws nrog lub qhov muag tsis pom. Nws yog qhov zoo tshaj plaws los siv rau cov paub A-qib vaj huam sib luag rau kev sib piv, thiab B-qib thiab C-qib panels tam sim ntawd yuav qhia lawv cov qauv qub. Ntxiv rau, cov vaj huam sib luag cov vaj huam sib luag tau faib cov qib A-theem ua peb ntu: A {{11}} +, A+, thiab A. Cov LCD zoo tshaj plaws yog qhov tsim nyog rau cov neeg siv khoom ntau dua cov khoom ua tau zoo. Raws li qhov xwm txheej ib txwm muaj, tus naj npawb ntawm qhov tsaus nti ntawm A-qib panels yog tsawg dua 3, thiab tus naj npawb ntawm cov pob qaim qaim dua yog tsawg dua 3, thaum tus lej ntawm qhov chaw ci thiab tsaus nti tuag yog tsawg dua 5; tus naj npawb ntawm cov pob tsaus nti ntawm A+-qib vaj huam sib luag yog tsawg dua 3, thiab tag nrho lub vijtsam tsis muaj lub ntsej muag ci, thiab tus naj npawb ntawm cov pixels tuag yog tsawg dua 3; A++-qib vaj huam sib luag tsis muaj lub ntsej muag ci ci lossis qhov tsaus nti, thiab tus naj npawb ntawm cov pixels ploj yog 0. Ob peb cov kua siv lead ua kua zaub coj los lees tias lawv cov khoom lag luam tsis muaj qhov pom kev zoo, thiab lawv cov kua siv hluav taws xob siv cov A+-theem panels Cov.
