发明授权
- 专利标题: Circuit arrangement for the voltage supply of a liquid crystal display device
- 专利标题(中): 用于液晶显示装置的电压供给的电路装置
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申请号: US10323353申请日: 2002-12-18
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公开(公告)号: US07038646B2公开(公告)日: 2006-05-02
- 发明人: Wolfgang Fallot-Burghardt , Harald Hohenwarter
- 申请人: Wolfgang Fallot-Burghardt , Harald Hohenwarter
- 申请人地址: NL Eindhoven
- 专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人地址: NL Eindhoven
- 代理商 Kevin Fortin
- 优先权: DE10162766 20011220
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
The circuit arrangement serves for the voltage supply of the row and column drivers of a liquid crystal display device. It comprises a voltage divider (1) having a plurality of series-connected resistors (R1–R5) and having voltage pick-offs (22–25) arranged between the resistors (R1–R5) for picking off different voltage levels (V2–V5). A single one (25) of the voltage pick-offs (22–25) is provided with means (3) for fine-tuning of the voltage level (V5) picked off there. By individually calibrating each individual circuit arrangement once, the one voltage level (V5) may be fine-tuned such that crosstalk caused by asymmetrical voltage levels, i.e. mutual interaction of pixel contents, is reduced. The advantages of the circuit arrangement come into their own in particular when it is used in liquid crystal display devices with a gray-stage display or color display.