Simulation of pixel voltage error for a-Si TFT LCD regarding the change in LC pixel capacitance
Electron Devices, IEEE Transactions（2001）
摘要
LC pixel capacitance Clc, which changes with the director of liquid crystal molecules as a function of external applied voltage, has a most important impact on the pixel voltage error Δ Vp and therefore on the electro-optics (E-O) characteristics of the LC pixel for an a-Si TFT LCD. In this paper, the pixel voltage error has been simulated for 10.4" VGA (640×480) and SVGA (800×600) a-Si TFT LCD, and in this simulation, we especially took into account the change in LC dielectric constant. We found that Δ Vp changes with the data voltage Vp. In addition, E-O characteristics of LC pixel for an a-Si TFT LCD has been investigated. The result shows that the effect of Δ Vp on E-O characteristics is significant when Vp ranges from the threshold voltage to the saturation voltage
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关键词
dielectric constant,10.4 in,amorphous semiconductors,saturation voltage,480 pixel,640 pixel,600 pixel,capacitance,lc pixel capacitance,800 pixel,errors,pixel voltage error simulation,threshold voltage,si,vga,external applied voltage,a-si tft lcd,elemental semiconductors,permittivity,liquid crystal displays,electro-optics characteristics,thin film transistors,electric potential,liquid crystal display,indexing terms,liquid crystals,thin film transistor,liquid crystal,equivalent circuits,capacitors,electrodes
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