发明授权
- 专利标题: Liquid crystal display device with a pre-charging circuit
- 专利标题(中): 带预充电电路的液晶显示装置
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申请号: US11320252申请日: 2005-12-27
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公开(公告)号: US07683870B2公开(公告)日: 2010-03-23
- 发明人: Sin Ho Kang , Jin Cheol Hong , Sung Chul Ha
- 申请人: Sin Ho Kang , Jin Cheol Hong , Sung Chul Ha
- 申请人地址: KR Seoul
- 专利权人: LG. Display Co., Ltd.
- 当前专利权人: LG. Display Co., Ltd.
- 当前专利权人地址: KR Seoul
- 代理机构: Brinks Hofer Gilson & Lione
- 优先权: KR10-2005-0056543 20050628
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
A liquid crystal display device is set forth that comprises a data line that is connected to drive a liquid crystal cell and an output driver connected to selectively provide a pixel drive signal to the data line. The pixel drive signal corresponds to a digital video data signal provided to the liquid crystal display device. A pre-charging circuit is used to reduce the power consumed by the output driver. To this end, the pre-charging circuit is connected to selectively pre-charge the data line to one or more of a plurality of voltage levels depending on the value of the digital video data signal. In one embodiment, the plurality of voltage levels comprises a positive pre-charge voltage, a negative pre-charge voltage, and a charge share voltage. The magnitudes of the positive pre-charge voltage and the negative pre-charge voltage may be chosen so that they are greater than the magnitude of the charge share voltage.
公开/授权文献
- US20060290638A1 Liquid crystal display and corresponding driving method 公开/授权日:2006-12-28
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