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Tsev > Xov xwm > Ntsiab lus
Cov Qauv Ntawm Cov Qauv Ntsuas Ntawm TFT-LCD
Apr 03, 2018

Tsis zoo li TN tshuab, TFT cov qauv siv "rov qab los ntawm" irradiation - qhov kev xav ntawm lub teeb pom kev tsis yog los ntawm kev siab li TN kua siv lead ua, tab sis los ntawm kev nce mus. Xws li ib txoj kev yog los teeb lub raj tshwj xeeb lub teeb nyob sab nraum lub LCD. Thaum lub teeb ci ntxoov ntxoo, nws yuav nce mus txog ntawm qhov qis dub. Raws li cov electrode ntawm lub nruab nrab thiab qis dua interlayer yog hloov mus rau hauv FET electrode thiab cov hom electrode, qhov ua tau ntawm cov kua siv lead ua kua yuav hloov thaum lub FET electrode txuas. Lub hom phiaj ntawm cov zaub yuav ua tiav los ntawm lub teeb shading thiab lub teeb transmittance, thiab lub sij hawm teb tau zoo heev txog li 80ms. Vim hais tias nws muaj ntau qhov sib txawv thiab ntau dua xim dua TN-LCD, qhov screen refresh rate sai dua, yog li TFT feem ntau hu ua "tiag tiag xim". Piv rau DSTN, qhov tseem ceeb ntawm TFT-LCD tseem ceeb yog kho ib qho kev sib txuas lus semiconductor rau txhua lub pixel. Txhua pixel tuaj yeem tswj tau ncaj qha los ntawm point pulse. Vim li no, txhua txoj ntawm kuj ywj siab thiab tswj tau tsis tu ncua. Txoj kev tsim qauv no tsis yog ua rau kev txhim kho kom ceev cov lus teb ntawm qhov npo, tab sis tseem muaj peev xwm tswj tau cov duab grayscale tseeb, uas yog vim li cas vim lub TFT xim zoo tshaj qhov DSTN. Hauv TFT-LCD, qhov kev ua haujlwm ntawm TFT yog sib npaug rau cov raj xa mus. Feem ntau siv TFT yog peb lub davhlau ya nyob twg. Feem ntau, semiconductor txheej ua rau iav substrate, thiab muaj ob qhov chaw thiab tso dej electrodes txuas rau lawv. Daim phiajcim kabmob hauv qab no yog tawmtsam rau theem nrab thiab muaj ib daim phiaj. Tam sim no ua ntawv thov rau daim phiaj no yog siv los tswj cov kev sib tw tam sim no thiab qhov chaw xa tawm. Rau cov zaub, txhua pixel yuav tsum simplified los ntawm tus qauv, thiab kua siv lead ua kua ntawm cov pixel electrode thiab cov hom electrode. Qhov tseem ceeb, nws tuaj yeem raug suav tias yog qhov loj los ntawm qhov kev xav ntawm hluav taws xob. Tus nqi hluav taws xob muaj nyob rau hauv daim duab 1. Yuav tsum tau J kom kuv sab pixel P (I, J), peb yuav tsum hloov t (kuv, J) mus txuas rau lub teeb liab kab D (I) rau lub phiaj xwm voltage. Thaum lub pixel electrode yog siab them, txawm tias qhov kev hloov no tau kaw, qhov them nyiaj hauv lub capacitor cia, thiab cov kua siv lead ua kua molecules ntawm cov electrodes tseem muaj ib qhov kev siv hluav taws xob. Lub luag hauj lwm ntawm cov ntaub ntawv (kem) tus neeg tsav tsheb yog ua kom muaj lub phiaj xwm qhov tseeb ntawm cov teeb liab, thiab txoj haujlwm ntawm lub rooj tsav npav yog hloov mus thiab tshem tawm. Vim hais tias cov zaub voltage ntxiv rau cov kua siv lead ua kua yuav muab khaws cia rau hauv qhov ua kom muaj peev xwm ntawm txhua lub pixel, cov kua siv lead ua kua tau ua haujlwm ruaj. Cov zaub hluav taws xob kuj tuaj yeem raug rov sau ua ntaub ntawv luv luv los ntawm TFT, yog li txawm nyob hauv lub rooj siab LCD, cov duab zoo yuav ua kom tiav. Tus yuam sij rau tso duab yog ib qho tseem ceeb ntawm cov khoom siv ua kua hauv cov hluav taws xob. Feem ntau, los ntawm kev ua haujlwm ntawm sab hauv sab hauv substrate, peb tuaj yeem ua kom muaj cov kua siv lead ua kua molecules tsim yam xav tau kev ua deformation mus ua ntau hom qauv. Nyob rau hauv qhov kev txiav txim ntawm lub teb hluav taws xob, cov kev hloov ntawm cov kua siv lead ua kua tshuaj, thiab qhov teeb meem ntawm qhov teeb meem lub teeb hloov tom qab cov kua siv lead ua kua. Yog li cov duab pom yog pom tau hais. Nyob rau hauv ib lo lus, TFT-LCD txawv ntawm qhov yooj yim ntawm matrix TN-LCD thiab STN-LCD. Nws muaj thin film transistor (TFT) rau txhua qhov pixel ntawm lub LCD npo, uas muaj peev xwm pab tau zoo rau lub crosstalk ntawm non - xaiv, thiab ua rau cov yam ntxwv zoo li qub ntawm cov duab LCD ywj siab ntawm cov xov tooj kab, zoo. Cov yam ntxwv ntawm kev hloov chaw (TFT) yog ua kom tau raws li qhov yuav tsum tau qis ntawm lub xeev tsis kam thiab muaj lub xeev loj heev ua haujlwm.

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