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Hom kev tsav tsheb thiab daim ntawv thov TFT-LCD

Jun 30, 2018

Hom kev tsav tsheb thiab daim ntawv thov TFT-LCD

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3.png Kev pub los ntawm qhov hluav taws xob yog vim yog qhov hloov ntawm lwm qhov hluav taws xob ntawm lub vaj huam sib luag, uas cuam tshuam qhov tseeb ntawm cov duab hluav taws xob ntawm qhov hluav taws xob los ntawm parasitic capacitance los yog lub peev xwm ua kom tiav. Muaj 3 qhov hluav taws xob loj sib txawv ntawm lub LCD vaj huam sib luag, namely, lub rooj tsav npav driver voltage hloov, tus neeg tsav tsheb qhov hluav taws xob hloov qhov hloov, thiab qhov hloov hluav taws xob. Qhov tseem ceeb tshaj plaws yog qhov kev hloov ntawm qhov rooj tsav tsheb (ntawm Cgs los yog Cs).

4.png Tus voltage ntaus nqi ntawm lub LCD xwb yog qhov txawv ntawm Vcom thiab Gamma voltage. Tab sis qhov tseeb, txhua cov nplai grey yog tsim los ntawm Vcom thiab ob txoj kev zoo thiab tsis pom zoo Gamma Voltage. Yog li thaum lub siab txawv ntawm qhov zoo thiab tsis zoo ib ntus txawv, qhov tshwm sim ntawm Flicker yuav tshwm sim.

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Qhov loj tshaj plaws ntawm ob qhov sib txawv ntawm cov neeg tsav tsheb yog kev siv qhov chaw tsav tsheb. Lub ntsiab lus ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov hluav taws xob, Peb pom tau tias thaum qhov voltage ntawm cov electrode yog tsau, qhov siab tshaj qhov hluav taws xob ntawm electrode zaub yuav tsum tau mus txog ntau tshaj li ob zaug ntawm qhov hluav taws xob ntawm cov hluav taws xob ntau. Qhov khoom ntawm lub siab yog muab tau los ntawm cov khoom siv hluav taws xob nyob rau hauv qhov chaw tsav tsheb. Yog hais tias qhov voltage ntawm cov electrode yog tsau rau 5 volts, ces qhov ua hauj lwm voltage ntau ntawm qhov chaw tsav tsheb yog ntau tshaj 10 volts. Tab sis yog hais tias qhov voltage ntawm qhov cov electrode hloov, yog qhov ntau electrode voltage yog siab tshaj 5 volts, qhov siab tshaj plaws ntawm kev tsav tsheb qhov hluav taws xob Qhov hluav taws xob tsuas yog 5 volts. Kev tsim thiab siv thiab tsim ntawm qhov chaw tsav tsheb, qhov ntau dua qhov kev khiav hauj lwm ntau ntawm cov khoom hluav taws xob, qhov tsis yooj yim ntawm txoj haujlwm thiab qhov tsis yooj yim ntawm qhov Circuit Court yuav nce, thiab tus nqi yuav ntau dua.