Analysis of Image Flicker in Polymer‐Sustained‐Alignment Liquid Crystal Display

Le résumé fourni par la source

Image flicker will cause the degradation of image quality of liquid crystal display. In this paper, the image flicker of polymer‐sustained‐alignment liquid crystal display panel is studied experimentally. We found that optimizing V com voltage can reduce image flicker. In addition, image flicker is sensitive to the low‐level gate voltage V gl and high‐level gate voltage V gh . V gl and V gh should be carefully optimized to minimize image flicker. Voltage holding ratio is affected by TFT’s leakage current I off(TFT) , liquid crystal’s leakage current I off(lc) , and circuit’s capacitance. A high resistivity liquid crystal material and high off‐state resistance of TFT should be applied to improve voltage holding ratio and reduce image flicker. Light leakage is another important factor affecting image flicker. By optimizing the shape of gate to shade the TFT channel, the image flicker can be reduced.

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