Cov kev sib tham hauv kev lag luam tsis ntev los no tau tshawb nrhiav txog cov thev naus laus zis tseem ceeb ntawmTransistor nyias-zaj duab xis (TFT) liquid siv lead ua zaub, qhia txog nws txoj kev tswj hwm "active matrix" uas ua rau muaj kev thaij duab zoo - kev tshawb pom tshiab uas tsav tsheb pom kev niaj hnub.
TFT, luv rau Thin-Film Transistor, hais txog lub matrix ntawm microscopic transistors. Tsis zoo li cov zaub ib txwm muaj, txhua pixel hauv ib qhoTFTLub vijtsam raug tswj hwm ib tus zuj zus los ntawm lub kaw lus "active matrix". Lub hauv paus ntsiab lus ua haujlwm zoo li lub tshuab "shutter": siv cov thev naus laus zis backlight, cov transistors tshwj xeeb tom qab txhua pixel tswj kev xa lub teeb los ntawm kev tswj hwm kev sib phim ntawm cov kua siv lead ua kua, ua tiav cov xim thiab qhov ci ntsa iab meej.
Lub khawv koob ntawmCov Zaub Siv Crystal Ua Kua (LCDs)nyob rau hauv cov yam ntxwv tshwj xeeb ntawm cov kua siv lead ua kua. Muaj nyob rau hauv peb lub xeev tseem ceeb - smectic (txheej zoo li av nplaum), nematic (cov molecules zoo li pas nrig), thiab cholesteric (cov qauv kauv) -Cov TFT LCDFeem ntau siv cov nematic crystals. Thaum muaj hluav taws xob siv, cov crystals no tig lawv cov kev taw qhia molecular los tswj lub teeb hla. Txhua pixel muab cov subpixels liab, ntsuab, thiab xiav sib xyaw, siv cov xim sib xyaw ua ke los tsim cov duab ci ntsa iab.
Cov Twisted Nematic (TN) uas tau txais kev siv dav davTFT-LCDthev naus laus zis, uas paub txog nws cov lus teb sai thiab kev ntseeg tau, muab lub zog rau cov khoom siv tseem ceeb los ntawm cov xov tooj ntse mus rau TVs. Raws li kev tsim kho tshiab ntawm cov zaub hloov pauv tau nce qib, TFT tau npaj los hloov pauv cov teb tshiab xws li thev naus laus zis hnav tau, cog lus tias yuav nyias dua, cov ntxaij vab tshaus khoov tau rau cov ntawv thov tiam tom ntej.
Lub sijhawm tshaj tawm: Plaub Hlis-24-2025