Invention Grant
- Patent Title: Liquid crystal display device with a pre-charging circuit
- Patent Title (中): 带预充电电路的液晶显示装置
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Application No.: US11320252Application Date: 2005-12-27
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Publication No.: US07683870B2Publication Date: 2010-03-23
- Inventor: Sin Ho Kang , Jin Cheol Hong , Sung Chul Ha
- Applicant: Sin Ho Kang , Jin Cheol Hong , Sung Chul Ha
- Applicant Address: KR Seoul
- Assignee: LG. Display Co., Ltd.
- Current Assignee: LG. Display Co., Ltd.
- Current Assignee Address: KR Seoul
- Agency: Brinks Hofer Gilson & Lione
- Priority: KR10-2005-0056543 20050628
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
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.
Public/Granted literature
- US20060290638A1 Liquid crystal display and corresponding driving method Public/Granted day:2006-12-28
Information query
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