发明授权
US06556182B1 Liquid crystal display device having an improved video line driver circuit
有权
具有改进的视频线驱动电路的液晶显示装置
- 专利标题: Liquid crystal display device having an improved video line driver circuit
- 专利标题(中): 具有改进的视频线驱动电路的液晶显示装置
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申请号: US09644862申请日: 2000-08-24
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公开(公告)号: US06556182B1公开(公告)日: 2003-04-29
- 发明人: Mitsuru Goto , Yozo Nakayasu , Shinji Yasukawa , Kentaro Agata , Yuji Yamashita , Koichi Kotera
- 申请人: Mitsuru Goto , Yozo Nakayasu , Shinji Yasukawa , Kentaro Agata , Yuji Yamashita , Koichi Kotera
- 优先权: JP11-244245 19990831
- 主分类号: G09G336
- IPC分类号: G09G336
摘要:
A liquid crystal display element having pixels, video signal lines applying a video signal voltage to the pixels and a video signal line driver supplying the video signal voltages to the video signal lines. The video signal line driver circuit includes a gray-scale voltage generating circuit provided with a resistor circuit dividing voltages between plural gray-scale reference voltages to generate plural gray-scale voltages, and selector circuits selecting one gray-scale voltage in accordance with the display data. The resistor circuit includes a resistive element provided with plural Intermediate taps for dividing voltages to generate the gray-scale voltages, gray-scale voltage lines corresponding to the gray-scale voltages, an interlayer insulating film insulating the gray-scale lines from the resistive element, and connections connecting the gray-scale voltage lines to corresponding ones of the intermediate taps through a hole in the interlayer insulating film.