Invention Application
- Patent Title: Liquid crystal display device
- Patent Title (中): 液晶显示装置
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Application No.: US10632713Application Date: 2003-08-01
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Publication No.: US20040041773A1Publication Date: 2004-03-04
- Inventor: Hiroshi Takeda , Youji Hirano
- Applicant: NEC LCD TECHNOLOGIES, LTD.
- Applicant Address: null
- Assignee: NEC LCD TECHNOLOGIES, LTD.
- Current Assignee: NEC LCD TECHNOLOGIES, LTD.
- Current Assignee Address: null
- Priority: JP2002-226440 20020802
- Main IPC: G09G003/36
- IPC: G09G003/36

Abstract:
An active matrix liquid crystal display device operates such that the polarity of a voltage on a common electrode 30 is inverted by row or by frame. A charge collection/resupply circuit includes a switch connected between the common electrode and a common voltage output buffer, a charge collection capacitor, and a switch connected between a connection point of the common electrode and the switch and the charge collection capacitor. The switch control unit is configured to operate such that immediately before a polarity of a common voltage VCOM10 is inverted, the switch 11 is turned off and then the switch 12 is turned on, and further, after inversion of the polarity of the common voltage VCOM, the switch is turned off and then the switch is turned on.
Public/Granted literature
- US07151516B2 Liquid crystal display device Public/Granted day:2006-12-19
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