Tsev > Exhibition > Ntsiab lus

LCD sab hauv Circuit Court

Sep 26, 2017

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Lub ntsiab tsav tsheb rau TFT haujlwm yog raws li nram no:

1, qhov uas tau tsav, lub luag haujlwm ntawm lub hwj chim.

2, tus tsav tsheb sib tsoo yog lub luag haujlwm rau kev qhib thiab kaw.

3, qhov sib lawv liaj tswj raws txoj cai tswj hwm lub rooj tsav npav.

4, grey qib thiab gamma tswj Circuit Court.

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Hauv daim duab (kaum peb) peb tuaj yeem pom qhov tseem ceeb vaj huam sib luag rau vaj huam sib luag, nyob rau txhua lub TFT thiab ob lub lag luam hauv kev loj hlob, sawv cev ntawm ib qho khoom. Ib qho khoom pixel yooj yim, koj yuav tsum tau qhia peb lub ntsiab lus, feem los sawv cev rau RGB nrog ib lub 1024 * ntawm 768 xim. Kev daws teeb meem ntawm TFT LCD, mus rau 1024 * 768 * 3 lub ntsej muag zoo li no. Tus qauv ntawm tag nrho cov vaj huam sib luag yog zoo li qhov no, thiab tom qab ntawd los ntawm daim duab qhov rooj tsav tsheb tawm ntawm lub npau suav, kom txhua kab ntawm TFT qhib, kom tag nrho ntawm qhov chaw thiab tus neeg tsav tsheb yuav pom ib kab tag nrho ntawm qhov point thiab them mus rau qhov kev xav tau voltage, qhia txawv nplai gray. Thaum txoj kab them nqi, cov rooj tsav npav yuav raug kaw qhov ntxiv ntawm cov kab hluav taws xob, ces lub rooj tsav npav yuav qhib los ntawm tib lub qhov hluav taws xob, tom qab ntawd ib tus neeg tsav tsheb rau kab tom ntej. Qhia qhov paug tawm. Qhov no tig los, thaum tus nqi them zoo kawg ntawm tus yeeb yam, thiab rov qab los pib ntawm thawj kab los pib them nyiaj. Nrog lub kua siv lead ua kua 1024 * 768 SVGA kev daws teeb meem, yuav muaj tag nrho cov 768 ntawm cov rooj vag thiab qhov chaw taug kev ntawm kab, mus rau kab yog 1024 * 3 = 3072 cov kua siv lead ua kua. Hauv ntau feem ntau 60Hz hloov zaus, txhua daim duab tso saib lub sij hawm yog li 1/60 = 16.67ms. vim hais tias muaj cov duab 768 kab ntawm txoj kab ntawm qhov rooj, yog li tis lub sij hawm hloov rau txhua lub qhov rooj kab yog 16.67ms / 768 = 21.7us. thiaj li nyob rau hauv daim duab (thirteen) rooj vag tsav tsheb tawm ntawm lub npe. Peb pom tau hais tias lub waveform yog ib tug mem tes ntawm 21.7us, kom qhib tau txhua kab ntawm TFT. thiab sourcedriver nyob rau hauv lub 21.7us lub sij hawm, ntawm qhov chaw Tus kab yuav tso tawm tus nqi thiab tawm mus rau qhov yuav tsum tau muaj qhov voltage, yog li ntawd cov gray sib ntsuas tau tso tawm kom pom.

Thawj qhib thawj kab, thiab lwm yam kaw.

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Tom qab ntawd, thawj kab kaw lawm, qhov voltage yog tsau, xim xim tas, ces qhov thib ob hom yog qhib, so kaw, thiab ntxiv rau.

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Vim tias cov kua siv lead ua kua dej muaj cov cwj pwm, tsis tas ib txwm nyob ntawm tej lub sij hawm ntev, los yog ntev, txawm tias koj thim qhov hluav taws xob, cov kua siv lead ua kua molecules vim muaj kev puas tsuaj rau vaj tse, vim yog qhov txawv ntawm lub teb hluav taws xob tig mus ua cov xim grey sib txawv. Yog li ib zaug ib ntus, koj yuav tsum rov qab mus rau qhov qub, kom tsis txhob muaj kev puas tsuaj ntawm cov khoom siv ntawm cov kua siv lead ua kua. Tab sis yog hais tias daim duab tau tas, uas yog hais tias yuav ua li cas yuav ua li cas tib yam thaum lub vijtsam duab tau ua tus nplai LCD? Li ntawd, qhov voltage tau muab faib ua ob hom polarity, ib tus zoo, lwm yog tsis zoo. Thaum cov zaub hluav taws xob siab tshaj qhov siab tshaj qhov hluav taws xob hluav taws xob, nws hu ua positive. Thiab thaum pom cov duab hluav taws xob hluav taws xob hluav taws xob tsawg dua li cov electrode, nws hu ua negative. Seb nws yog qhov zoo los tsis zoo Grey, yuav muaj ib pawg ntawm tib lub ci ci. Yog li thaum lub siab ntawm ob cov khaubncaws sab nraud povtseg ntawm iav ntawm qhov sib txawv ntawm tus nqi yog tsau, tsis hais txog ntawm cov khoom electrodes nrog high voltage, high voltage los yog electrode, gray scale qhia yog. Tab sis zoo li ob lub noob taum nyob hauv ob qho tib si, cov kua tshuaj ua kua molecules rau nws yog qhov ntxeev lus, nws tuaj yeem zam qhov saum toj no thaum cov kua qaub tsim kua xau rau hauv ib qho kev coj, tshwm sim los ntawm cov yam ntxwv tsis ua haujlwm. Uas yog hais tias, thaum lub vijtsam duab tau tas lawm, peb tseem tuaj yeem tsis nres los ntawm kev ua polarity, kom pom cov duab tsis txav, tib lub sijhawm, kua siv lead ua kua molecules tsis tua tus cwj pwm. Yog li thaum lub LCD screen koj pom tab sis tsis muaj zog, ua tau hauv cov hluav taws xob yog cia rau kev hloov, thiab kua siv lead ua kua molecules cia nyob rau hauv ib tug tig mus rau sab, ib sab rau tig rov qab ?!

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Integrated zaub teebmeem thiab cov nqi tsim hluav taws xob, feem ntau cov LCD xaiv tsis hloov pauv, dot, txoj kev ua haujlwm.