LCD thev naus laus zis yog muab cov kua siv lead ua kua ntawm ob lub dav hlau uas muaj cov grooves zoo. Cov grooves ntawm ob lub dav hlau no yog perpendicular rau ib leeg. Yog hais tias cov molecules ntawm ib lub dav hlau yog teem rau sab qaum teb-sab qab teb, cov molecules ntawm lwm lub dav hlau yog teem rau sab hnub tuaj-sab hnub poob, thiab cov molecules ntawm ob lub dav hlau raug yuam txhaj rau hauv 90-degree twisted xeev. Lub teeb propagates raws cov kev taw qhia nyob rau hauv uas lub molecules yog teem, yog li thaum lub teeb hla lub kua siv lead ua kua, nws kuj yog twisted 90 degrees. Txawm li cas los xij, thaum muaj qhov hluav taws xob siv rau cov kua siv lead ua kua, cov molecules yuav rov teem dua ntsug kom lub teeb tuaj yeem raug coj tawm yam tsis muaj kev sib tw.
LCD yog heev nyob ntawm cov lim polarization thiab lub teeb nws tus kheej. Lub teeb ntuj diffuses nyob rau txhua qhov chaw. Polarization lim yog cov kab sib txuas ua ke. Cov kab sib txuas no tsim ib lub vas, thiab cov kab ntawm cov lim polarizing yog raws nraim perpendicular rau thawj tus, yog li nws tuaj yeem thaiv tag nrho lub teeb polarized. Tsuas yog thaum cov kab ntawm ob lub lim dej sib npaug tag nrho, lossis lub teeb nws tus kheej tau raug twisted kom haum rau ob lub lim dej polarized, lub teeb tuaj yeem nkag mus.
Los ntawm qhov kev xav ntawm lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm cov qauv ntawm LCD npo zaub, txawm tias nws yog lub khoos phis tawj lossis lub khoos phis tawj, lub vijtsam LCD yog cov txheej txheem txheej txheej sib txawv. Lub LCD yog tsim los ntawm ob lub iav phaj, txog 1 hli tuab, sib cais los ntawm cov khoom uas muaj cov kua siv lead ua kua hauv nruab nrab. Vim tias cov khoom siv lead ua kua nws tus kheej tsis tawm lub teeb, muaj cov raj teeb ntawm ob sab ntawm lub vijtsam. Txawm li cas los xij, muaj cov yeeb yaj kiab uas muaj kev cuam tshuam thiab lub teeb ci ntsa iab ntawm sab nraub qaum ntawm cov kua siv lead ua kua zaub screen. Lub backlight phaj yog tsim los ntawm cov khoom siv fluorescent uas tuaj yeem tawm lub teeb. Muab lub teeb ci hauv qab. Lub teeb tawm ntawm lub teeb rov qab nkag mus rau hauv cov kua siv lead ua kua txheej ntawm cov siv lead ua tom qab dhau los ntawm thawj txheej ntawm polarizing lim txheej. Cov muaju nyob rau hauv cov kua siv lead ua kua yog tag nrho cov nyob rau hauv ib tug me me cell qauv, thiab ib los yog ntau lub hlwb ua ib tug pixel ntawm qhov screen. Muaj cov pob tshab electrodes nruab nrab ntawm cov iav phaj thiab cov khoom siv lead ua kua. Cov electrodes tau muab faib ua kab thiab kab. Ntawm qhov kev sib tshuam ntawm cov kab thiab kab, qhov kho qhov muag hloov lub xeev ntawm cov kua siv lead ua kua yog hloov los ntawm kev hloov qhov voltage. Kev ua haujlwm ntawm cov khoom siv ua kua siv lead ua zoo ib yam li lub teeb me me li qub. . Nyob rau hauv periphery ntawm cov khoom siv lead ua kua yog cov tswj Circuit Court thiab tsav tsheb. Thaum cov electrodes nyob rau hauv LCD tsim ib qho hluav taws xob teb, cov kua siv lead ua kua molecules yuav twisted, yog li refracting lub teeb hla nws, thiab ces raug lim los ntawm lub thib ob lim txheej yuav tsum tau muab tso rau hauv lub screen.
