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Driving Scheme Using Bootstrapping Method for Blue-Phase LCDs

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6 Author(s)
Chun-Da Tu ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Chih-Lung Lin ; Jin Yan ; Yuan Chen
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We present a new pixel circuit on glass using hydrogenated amorphous silicon (a-Si:H) for driving polymer-stabilized blue-phase liquid crystal displays (BPLCDs). Different from conventional nematics, BPLC demands a large dielectric anisotropy in order to lower the operation voltage. As a result, the pixel's capacitance is increased by ~ 10×, which seriously limits the charging capability and optical efficiency. Simulation results show that the average error rate of storage voltage in pixel circuit is below 5.14% for 180 Hz operating frequency.

Published in:

Journal of Display Technology  (Volume:9 ,  Issue: 1 )