- 专利标题: Liquid crystal display device and its drive method
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申请号: US11217031申请日: 2005-08-31
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公开(公告)号: US20060017677A1公开(公告)日: 2006-01-26
- 发明人: Katsufumi Ohmuro , Arihiro Takeda , Hideo Chida , Kimiaki Nakamura , Yoshio Koike
- 申请人: Katsufumi Ohmuro , Arihiro Takeda , Hideo Chida , Kimiaki Nakamura , Yoshio Koike
- 申请人地址: JP Osaka
- 专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人地址: JP Osaka
- 优先权: JP10-348914 19981208; JP11-75963 19990319
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
A MVA type liquid crystal panel is slow in a response speed when a black state at a drive voltage about 1V is switched to a low brightness halftone state at the drive voltage about 2 to 3V. According to the present invention, in a liquid crystal display device for driving the MVA type liquid crystal panel, when a liquid crystal pixel at a pixel electrode is changed from a first transmittance to a second transmittance greater than the first transmittance, a drive voltage greater than a fist target drive voltage in correspondence with a second transmittance is applied to the pixel electrode in a first frame period of changing to the second transmittance, and the first target display voltage is applied from a second frame period. According to the present invention, even when either switching is performed from a black state to a low brightness halftone state, from the black state to a high brightness halftone state, for from the black state to a white state, a response time is shortened, and the switching can be performed without generating an overshoot.
公开/授权文献
- US07532183B2 Liquid crystal display device and its drive method 公开/授权日:2009-05-12
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