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Lub Ralated Introduction Ntawm LCD

Lub Ralated Introduction Ntawm LCD

May 10, 2017

TN

Twisted Nematic (TN) LCD muaj ib tug txheej ntawm kua siv lead ua cov ntaub ntawv kev txhawb los ntawm ob tug iav daim hlau. Cov kua siv lead ua cov ntaub ntawv uas yog ib tug sib tov ntawm ntev, cylindrically zoo li tus molecules nrog txawv hluav taws xob thiab kho qhov muag zog, nyob ntawm seb cov kev taw qhia

Nyob rau lub puab chaw ntawm cov iav phiaj no yuav tshab electrodes, uas yog patterned rau rau yam nrig txog kev pom duab. Lub puab tej chaw yog coated nrog ib tug polymer, uas yog txawm lig los plhws thiaj li hais tias cov kua siv lead ua cov ntaub ntawv uas nyob rau ib nto lus dag perpendicular mus rau lwm yam. Nyob rau hauv lub zaj duab xis ntawm cov kua siv lead ua, lub molecules tsim ib tug 90 ° twist.

Nyob rau txheej nto ntawm cov iav phiaj, polarizers yog muab tso rau kom lawv thiaj li yog thaum uas tig mus rau cov kua siv lead ua orientation thiab perpendicular mus rau txhua lwm yam. nyob rau hauv lub "off" lub xeev, lub teeb yuav mus rau qhov thawj polarizer yog ua los ntawm cov kua siv lead ua txheej twist mus rau lub thib ob polarizer, los ntawm kev uas nws yog kis tau. Thaum lub cell yog energized, lub LC khoom haum raws li lub hluav taws xob field; teeb kis tau los ntawm tus thawj polarizer yog sim los ntawm tus thib ob polarizer, txoj kev ua ib tug maub daim duab. Cov nyhuv tej zaum yuav ntxeev yog hais tias tus polarizers yog muab tso rau thaum uas tig mus rau txhua lwm yam, thiab ib lub teeb duab nyob rau hauv ib tug maub tom qab yog tsim.

Lub TN technology los nyob rau hauv ib coloration, nws yog dub cim rau ib tug grey tom qab. Nws yog ib lub tsawg kawg yog kim, tab sis muaj tus nqi qis tshaj nrig txog kev pom zoo, feem ntau nyob rau hauv saib lub.

STN

Super Twisted Nematic LCD muaj ib tug twist uas yog ntau tshaj 90 tab sis tsawg tshaj li 360 degrees. Tam sim no feem ntau STN qhia no yog ua los nrog ib tug twist ntawm 180 thiab 270 degrees. Lub siab dua twist ces kaum ua steeper Harbor curves uas muab tso rau lub rau hauv thiab tawm voltages ze zog ua ke. Lub steeper kev ceeb toom tso cai rau multiplex nqi siab tshaj 32 kom ua tau tiav.

Nyob rau hauv tas li ntawd mus rau li qub supertwist qhia, muaj kuj muaj nyob ob supertwist thiab triple supertwist qhia. Nyob rau hauv Feem ntau, qhov ntau twists, ntau dua qhov lub zoo.

Supertwist qhia kuj hu ua supertwist nematic (STN) qhia.

FSTN

Qhov tseem tsis ntev los no ua ntej lawm cov kev taw qhia ntawm zaj duab xis compensated Super Twisted Nematic (FSTN) qhia. Qhov no ntxiv ib tug ruamqauj zaj duab xis mus rau lub STN zaub uas compensates rau cov xim ntxiv los ntawm lub birefringence nyhuv. Qhov no pub rau ib tug dub thiab dawb cov zaub yuav tsum tau ua thiab muab rau ib tug ntau dua zoo thiab dav saib lub.

Lub FSTN technology los nyob rau hauv ib coloration, Dub cim rau ib tug dawb / Grey tom qab. Ntawm peb technologies uas muaj npe ntawm no, nws yog ib lub kim tshaj plaws, tab sis nws twb zoo saib ces kaum thiab sib piv hais tias cov STN technology uas muaj npe saum toj no.

CSTN

Luv rau xim super-twist nematic, ib tug LCD technology tsim los ntawm Ntse Electronics Corporation. Tsis zoo li TFT, CSTN yog raws li nyob rau hauv ib tug passive-matrix, uas yog tsis tshua kim los tsim. Tus thawj CSTN qhia tsim nyob rau hauv thaum ntxov 90 lub raug kev txom nyem los ntawm qeeb teb lub sij hawm thiab ghosting. Tsis ntev los no kev kho nyob rau hauv lub tshuab, Txawm li cas los, tau ua CSTN ib tug zaum lwm txoj kev mus dhia-matrix qhia. Tshiab CSTN qhia muaj 100 ms teb lub sij hawm, ib tug 140 degree saib lub, thiab high-zoo nqaij daim tawv rivaling TFT lus - tag nrho cov nyob txog ib nrab tus nqi.

DSTN

Luv rau ob-txheej supertwist nematic, ib tug passive-matrix LCD technology uas siv ob zaub khaubncaws sab nraud povtseg dab cov xim shifting uas muaj tshwm sim nrog cov pa supertwist qhia.

TFT

Luv rau nyias zaj duab xis transistor, ib hom ntawm LCD pav ca-vaj huam sib luag zaub screen, nyob rau hauv uas txhua pixel yog tswj los ntawm los ntawm ib tug mus rau plaub transistors. Lub TFT technology muab qhov zoo tshaj plaws kev daws teeb meem ntawm tag nrho cov pav ca-vaj huam sib luag hom kev kawm, tab sis nws tseem yog lub kim tshaj plaws. TFT cov ntxaij vab tshaus no hu ua active-matrix LCDs.