TFT-LCD: qhov kev piav qhia, lub ntsiab cai ntawm lub lag luam

Nyob rau hauv niaj hnub khoom vaj khoom tsev lug siv lub caij xws li ib tug TFT-zaub. Nws yog siv nyob rau hauv ntau hom ntawm pab kiag li lawm: computer saib, TV, xov tooj txawb cov ntxaij vab tshaus, nyob rau hauv camcorders thiab cov koob yees duab, raws li zoo li ntau lwm pab kiag li lawm. Yuav ua li cas hom ntawm technology, dab tsi yog cov kev pab cuam? Nyob rau hauv no tsab xov xwm, peb yuav kawm txog dab tsi tshwm sim tawm ib TFT-LCD, nws zoo thiab disadvantages.

Nyias-zaj duab xis transistor (TFT) txhais ua lus Askiv txhais tau tias ib tug nyias zaj duab xis- transistor. Cov ntsiab yog ua los ntawm nyias zaj duab xis thickness ntawm 0.1-0.01 micrometer. Ntawm no xws transistors thiab tswj los ntawm TFT-matrix, tsis tau nws yog hu ua "active". Passive xws li kua siv lead ua kiag li lawm. Active TFT-zaub, nyob rau hauv sib piv rau lub LCD technology, muaj ib tug poj ceev, ib tug ntau dua clarity thiab sib piv ntawm cov duab thiab ho dav saib lub. Nyob rau hauv cov pab kiag li lawm yog tsis muaj screen flicker, uas los ntawm tus nkees ob lub qhov muag. Nyob rau hauv lub active matrix pixel generating tawg lub teeb flux nrog ib tug predetermined xim, yog li TFT-zaub yog zog npaum li cas tshaj passive matrix LCD. Tag nrho cov nyiaj pab no yog vim lub fact tias cov piav technology muaj ib tug ntau dua cov duab refresh tus nqi. Qhov no yog vim lub fact tias txhua taw tes ntawm cov zaub yog tshuaj los ntawm ib tug nyias muaj nyias ib nyias zaj duab xis transistor. Tus nab npawb ntawm xws ntsiab nyob rau hauv TFT-technology yog peb lub sij hawm loj tshaj lub xov tooj ntawm pixels. Yog li ntawd, ib tug taw tes match peb dawb lias hlwb: liab, ntsuab thiab xiav (RGB system). Piv txwv li, xav txog ib tug matrix: zaub TFT (xim) nrog ib tug daws teeb meem ntawm 1280x1024 pixels, ntsig txog, tus xov tooj ntawm transistors nyob rau hauv xws li ib tug ntaus ntawv yuav tsum tau 3840h1024.

Tus thawj kua siv lead ua matrix nyob rau hauv 1972. Txij thaum ntawd los, cov technology tau zoo heev evolved thiab hloov. Txawm li cas los, tag nrho cov twb tsis tau mus tua cov shortcomings. Piv txwv li, vim muaj cov loj loj tus naj npawb ntawm pixels yog feem ntau ntawm lawv muaj peev xwm yuav nrhiav tau "tawg", uas yog lawm. Tej zibntab point yuav kho tsis tau. Nws yuav tsum tau muab sau tseg tias nyob rau hauv lub active matrix "tawg" pixels yog tsawg hnov dua passive pab kiag li lawm los yog qhia, dual scan. Nruam txoj kev loj hlob ntawm TFT-technology tau significantly txo tus nqi ntawm cov xws saib yog tam sim no "kim txawv" tau los ua ib tug commonplace. Ib qho tseem ceeb nyob rau hauv ntau yam kom nquag plias matrix nyob rau hauv lub lag luam yog qhov yooj yim ntawm kev siv. Niaj hnub no tsis muaj ib tug yog ras los ntawm kov screen TFT-zaub, thiab nees nkaum xyoo dhau los, nws yog ib tug accomplishment. Rasprostanenie touchmonitors preceded cov tsos ntawm cov qauv, uas muaj peev xwm ntawm kev khiav hauj lwm nyob rau hauv hnyav tej kev kawm. Cov tshwm sim yog ib tug TFT-zaub chav tsev, sib txuas txhais tau tias rau displaying nrig txog kev pom cov lus qhia, thiab ib lub tswv yim ntaus ntawv (keyboard). Lub efficiency ntawm xws li ib tug system muab ib tug serial interface xws li. Qhov no ntaus ntawv rau ib txhais tes yog kev cob cog rua rau tus saib thiab lwm yam - mus rau lub serial chaw nres nkoj (COM1 - COM4). Yuav kom tswj tau thiab txhais Pib ntsais koj teeb ntawm lub sensor, raws li zoo raws li tsuj ntawm "bounce" yog siv cov controllers PIC. Lawv muaj peev xwm muab kev kub ceev thiab cov neeg nyob rau hauv kev txiav txim touch cov ntsiab lus.

Nyob rau hauv xaus, peb hais tias lub TFT-technology raws li ib tug zaub thiab sensors yog tag nrho cov nyob ib ncig ntawm peb nyob rau hauv lub neej txhua hnub, lawv yog siv nyob rau hauv txhua tsev neeg kws.