Lub luag haujlwm tseem ceeb ntawm LCD saib yog kom muaj lub teeb ci rov qab, uas txiav txim siab qhov ci thiab xim saturation ntawm tag nrho LCD npo. Hauv kev xav, qhov siab dua qhov ci ntawm cov kua siv lead ua kua, qhov zoo dua. Chav ntsuas ntawm qhov ci ci yog cd / m2 (square tswm ciab ib 'meter'), tseem hu ua NIT lumen. Qhov ci ntsa iab ntawm TFT npo feem ntau pib ntawm 150Nits, thiab feem ntau tsuas yog 200Nits tuaj yeem tso cov duab zoo dua. Contrast yog hais txog kev ntsuas qhov sib piv ntawm cov xim dub thiab dawb ntawm ntau qib. Thaum qhov sib piv piv yog 120: 1, tiag tiag thiab nplua nuj xim tuaj yeem tshwm sim (vim tib neeg lub qhov muag tuaj yeem paub qhov txawv ntawm qhov sib piv ntawm 100: 1), thiab thaum qhov sib piv piv txog 300: 1, xim ntawm ntau qib tuaj yeem txhawb nqa. Feem ntau cov duab LCD muaj qhov sib piv ntawm 500: 1 txog 800: 1. Qhov sib piv ntawm LCD cov khoom lag luam los ntawm cov khoom lag luam sab saum toj xws li Asus, Samsung, LG, thiab lwm yam yog feem ntau nyob ib puag ncig 1000: 1, thiab tsis muaj tus nqi ncaj ncees los ntsuas qhov sib txawv ntawm qhov ci thiab qhov sib txawv. Yog li ntawd, kev yuav ib lub LCD cia siab rau ntawm ob lub qhov muag ntse. Yog li thaum xaiv ib qho LCD, nws yog ib qho tseem ceeb uas yuav tsum tau them sai sai rau qhov ntsuas no, uas yog qhov tseem ceeb tshaj qhov sib txawv ntawm cov khoom siv LCD. Nws kwv yees tias txheej txheem xaiv yuav nyuaj.
