发明授权
- 专利标题: Liquid crystal display drive circuit and liquid crystal display
- 专利标题(中): 液晶显示驱动电路和液晶显示
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申请号: US154504申请日: 1998-09-17
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公开(公告)号: US6160534A公开(公告)日: 2000-12-12
- 发明人: Masayuki Katakura
- 申请人: Masayuki Katakura
- 申请人地址: JPX Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX9-261973 19970926; JPX10-144716 19980526
- 主分类号: G02F1/133
- IPC分类号: G02F1/133 ; G09G3/20 ; G09G3/36
摘要:
A liquid crystal display drive circuit capable of reducing deviation between channels and realizing a liquid crystal display of a high image quality without requiring an adjustment step on a manufacturing line. A reference signal is inserted into image data and provision is made of amplifiers for processing input image data to periodically invert and supplying the same to a plurality of channels; a switch circuit; a subtraction circuit for comparing an output of a first amplifier and an output signal in a case of a non-inverted output and comparing an output of a second amplifier and the output signal in a case of an inverted output; a gate circuit for extracting only the reference signal from among output signals of the subtraction circuit and generating offset correction signals corresponding to a non-inverted mode and an inverted mode; switch circuits; integrated circuits; and an adder circuit for adding the offset correction signals corresponding to the non-inverted mode and the inverted mode to the output signal of a sample-and-hold circuit and outputting the same to the liquid crystal display panel.
公开/授权文献
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