Txoj Cai Ua Haujlwm Ntawm LCD Screen

Cov khoom siv lead ua kua yog ntim ntawm ob daim phiaj sib luag, thiab tom qab ntawd kev teeb tsa ntawm cov molecules hauv cov khoom siv lead ua kua yog hloov pauv los ntawm qhov hluav taws xob, kom ua tiav lub hom phiaj ntawm shading thiab xa lub teeb kom pom cov duab sib txawv, thiab ntev npaum li cas. raws li ob A peb-xim lim txheej ntxiv ntawm cov paib tiaj tus, thiab cov duab xim tuaj yeem tso tawm.

Cov qauv ntawm LCD kua siv lead ua kua yog tso cov khoom siv lead ua kua rau hauv ob qho tib si ntawm iav. Muaj ntau txoj kab ntsug thiab kab rov tav nyias nyias nyob hauv nruab nrab ntawm ob daim iav. Cov pas nrig-shaped crystal molecules yog tswj los ntawm seb lawv puas siv los yog tsis, yog li hloov cov kev taw qhia, thiab thim nws lub teeb los tsim cov duab. Nws zoo dua li CRT, tab sis nws tus nqi kim dua.

Cov kua siv lead ua kua yog cov organic sib xyaw ua ke ntawm cov pas nrig ntev zoo li cov molecules. Nyob rau hauv lawv lub xeev ntuj, lub axes ntev ntawm cov pas nrig-zoo li molecules yog roughly parallel.

Ib qho ntawm cov yam ntxwv ntawm LCD kua siv lead ua kua tshuaj ntsuam: cov kua siv lead ua kua yuav tsum tau nchuav ntawm ob lub dav hlau nrog nyias grooves ua haujlwm ib txwm. Cov grooves ntawm ob lub dav hlau no yog perpendicular rau ib leeg (kev sib tshuam ntawm 90 degrees), yog li ntawd, yog hais tias cov molecules ntawm ib lub dav hlau sib haum mus rau sab qaum teb-sab qab teb, cov molecules ntawm lwm lub dav hlau yog nyob rau sab hnub tuaj-sab hnub poob, thiab cov molecules hauv ob lub dav hlau sib dhos Cov molecules nyob nruab nrab raug yuam mus rau hauv 90-degree twist. Txij li thaum lub teeb mus rau hauv cov kev taw qhia ntawm kev sib haum xeeb ntawm cov molecules, lub teeb kuj yog twisted 90 degrees raws li nws dhau los ntawm cov kua siv lead ua kua. Tab sis thaum muaj hluav taws xob siv rau cov kua siv lead ua kua, cov molecules tau rov ua raws vertically kom lub teeb tuaj yeem tawm ncaj qha yam tsis muaj kev sib tw.

Qhov thib ob feature ntawm LCD: nws cia siab ntau rau cov lim polarized thiab lub teeb nws tus kheej. Lub teeb ntuj yog randomly faib nyob rau hauv tag nrho cov lus qhia. Polarized cov ntxaij lim dej yog qhov ua tau zoo ntawm cov kab nyias nyias thiab cov kab sib txuas. Cov kab no tsim ib lub vas uas thaiv tag nrho cov kab hluav taws xob uas tsis sib luag rau cov kab no. Cov kab ntawm cov lim polarizing kuj yog raws nraim perpendicular rau Di, yog li lawv tuaj yeem thaiv tag nrho lub teeb uas tau raug polarized. Lub teeb tsuas tuaj yeem nkag mus yog tias cov kab ntawm ob lub lim dej zoo sib xws, lossis yog tias lub teeb nws tus kheej tau raug twisted kom phim lub lim dej thib ob. Lub LCD yog tsim los ntawm ob qho tib si perpendicular polarized lim, yog li nyob rau hauv ib txwm muaj xwm txheej txhua lub teeb uas sim nkag mus yuav tsum raug thaiv. Txawm li cas los xij, txij li ob lub lim dej tau ntim nrog cov kua dej sib tw, thaum lub teeb dhau los ntawm lub lim Di, nws yuav sib tw 90 degrees los ntawm cov kua siv lead ua kua molecules, thiab Zui yuav dhau los ntawm cov lim thib ob. . Ntawm qhov tod tes, yog tias qhov hluav taws xob tau siv rau cov kua siv lead ua kua, cov molecules yuav raug rov kho dua thiab ua tib zoo sib luag, kom lub teeb yuav tsis raug twisted ntxiv, yog li nws tsuas yog thaiv los ntawm lim thib ob. Hauv luv luv, lub hwj chim ntawm tuaj yeem thaiv lub teeb, thiab tsis muaj lub zog tuaj yeem tso lub teeb tawm. Tau kawg, qhov kev npaj ntawm cov kua siv lead ua kua hauv lub vijtsam LCD kuj tuaj yeem hloov pauv, kom lub teeb tawm thaum nws tau siv, thiab yuav raug thaiv thaum nws tsis siv.