Tsev > Exhibition > Ntsiab lus

Cov qauv ntxwv ntawm TFT-LCD

Sep 22, 2017

Tsis zoo li TN tshuab, TFT zaub siv qhov "rov qab" hom kev teeb tsa - qhov hypothetical light txoj kev, tsis yog saum toj mus rau hauv qab xws li TN LCD, tab sis txij li hauv qab. Nyob rau hauv no txoj kev, lub teeb tshwj xeeb lub teeb yog npaj nyob rau sab nraum qab ntawm cov kua siv lead ua kua, thiab lub teeb ci tuaj sab nraud los ntawm qis sab polarizing phaj. Qhov electrode hauv kev sib tw hauv FET electrode thiab cov electrode, cov FET electrode tau ua, qhov kev ua tau ntawm cov kua qaub deg ua kua hloov yuav hloov, yuav muaj teeb thiab shading mus ua kom tiav lub hom phiaj ntawm cov yeeb yam, lub sijhawm teb nce mus txog 80ms . Vim tias nws siab dua TN-LCD zoo ib yam thiab ntau dua cov yeeb yuj, kev tshuaj ntsuam ceev dua tshiab, lub TFT hu ua "tseeb xim". Muab piv rau DSTN, lub ntsiab feature ntawm TFT-LCD yog siv lub teeb nruab nrab ntawm lub tshuab hluav taws xob rau txhua lub pixel. Vim tias txhua pixel tuaj yeem tswj tau ncaj qha los ntawm point pulse. Yog li ntawd, txhua txoj ntawm kuj ywj siab thiab tswj tau tsis tu ncua. Txoj kev tsim qauv no tsis yog pab txhawb kev ceev ceev ntawm lub vijtsam npo, tab sis kuj tswj cov theem grey level meej. Qhov no yog vim li cas qhov TFT xim muaj ntau qhov tseeb tshaj li ntawm dstn. Hauv TFT-LCD, qhov kev ua ntawm TFT yog sib npaug rau cov raj xa mus. Cov hom TFT yog peb qhov khoom siv dav dav. Ib qho txheej txheem semiconductor feem ntau yog muab los ntawm ib lub iav substrate, nrog lub hauv paus thiab cov dej ntws tawm ntawm ob qho tas los. Ib lub rooj vag yog teem los ntawm lub rooj vag insulating zaj duab xis thiab lus rov qab rau lub semiconductor. Tam sim no nyob nruab nrab ntawm lub hauv paus thiab qhov tso dej yog tswj los ntawm kev siv cov hluav taws xob uas siv rau lub qhov rooj. Rau cov vijtsam zaub, txhua lub pixel yuav ua kom yooj yim los ntawm cov qauv ua kua siv ua kua nplaum ntawm cov pixel electrode thiab cov electrode. Dab tsi ntau, los ntawm qhov pom ntawm qhov hluav taws xob, koj tuaj yeem pom nws ua tus tu neeg mob. Daim npav sib npaug yog pom nyob hauv daim duab 1. Kom them tus pixels P (I, J) ntawm j tshaj kuv kab, qhov hloov t (I, J) tau hloov rau, thiab lub siab qhov muaj tseeb yog siv rau kab xaj D ( Kuv). Thaum lub pixel electrode yog siab them, txawm tias tus tes hloov mus, cov nqi hauv lub capacitor yog tseem fwm, thiab cov kua siv lead ua kua ntawm cov electrodes tseem muaj ib qhov kev siv hluav taws xob. Kev ua haujlwm ntawm tus neeg tsav tsheb (kem) tus neeg tsav tsheb yog siv lub hom phiaj qhov muaj tseeb rau cov teeb liab, thaum lub qhov rooj (txoj kab) pib qhib qhov chaw thiab tshem tawm ntawm qhov hloov. Vim cov zaub voltage ntawm cov kua siv lead ua kua yuav muab khaws cia rau hauv lub tshuab capacitor ntawm txhua lub pixel, cov kua siv lead ua kua yuav ua hauj lwm ruaj. Qhov kev tso hluav taws xob no kuj tuaj yeem sau ua ntaub ntawv nyob rau hauv ib lub sij hawm luv luv los ntawm TFT, yog li txawm tias hauv High Definition LCD, nws muaj peev xwm ua tau raws li qhov yuav tsum tsis txhob txo cov duab zoo. Tus yuam sij rau cov zaub yog qhov qhia txog molecular ntawm cov kua dej ua kua hauv qhov kev txiav txim ntawm cov hluav taws xob. Feem ntau, cov txheej txheem ntawm cov kua siv lead ua kua molecules ua rau ib qhov kev xav tau deformation los ntawm kev ua cov qauv ntawm sab hauv ntawm cov substrate mus ua ntau hom qauv. Xaiv ib hom zaub, nyob rau hauv cov hluav taws xob, cov kua siv lead ua kua molecules tsim cov kev hloov kev hloov, thiab los ntawm kev siv cov yeeb yaj kiab, nrog rau qhov teeb meem lub teeb los ntawm cov kua siv lead ua kua tom qab cov kev hloov pauv. Thiaj li mus cuag cov duab saib. Nyob hauv luv, yooj yim passive matrix TFT-LCD thiab TN-LCD, STN-LCD txawv, nws nyob hauv txhua pixel LCD screen yog teem rau nyias zaj duab xis transistor (TFT), uas tau tawm tsam cov crosstalk tsis gating, tso saib cov static tus cwj pwm thiab lub LCD screen yog ywj siab ntawm cov xov tooj ntawm cov kab sib txuas, yog li ua tau zoo heev rau kev txhim kho cov duab zoo. Cov yam ntxwv ntawm cov chaw sib hloov (TFT) yog tias qhov yuav tsum tau ua rau lub xeev tsis kam thiab qhov kev kaw loj heev yuav tsum tau ua.