发明授权
- 专利标题: Liquid crystal display drive circuit and liquid crystal display device
- 专利标题(中): 液晶显示驱动电路和液晶显示装置
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申请号: US12998481申请日: 2009-10-28
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公开(公告)号: US08743041B2公开(公告)日: 2014-06-03
- 发明人: Toru Kuriyama , Hisashi Yamaguchi , Hiromasa Asada
- 申请人: Toru Kuriyama , Hisashi Yamaguchi , Hiromasa Asada
- 申请人地址: JP Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JP Osaka
- 代理机构: Harness, Dickey & Pierce, P.L.C.
- 优先权: JP2008-280342 20081030
- 国际申请: PCT/JP2009/068509 WO 20091028
- 国际公布: WO2010/050511 WO 20100506
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
In order to carry out a display reset operation, a segment driver and a common driver are driven to operate as below during a display data reading period in which voltages to be applied to a liquid crystal display panel are nonuniform between lines. First, a shift register and a level shifter which are provided in the segment driver and a shift register and a level shifter which are provided in the common driver are driven to operate as usual, whereas a display control signal supplied from a controller causes output circuits to stop carrying out their respective output operations. In at least one embodiment, during a period in which a writing operation is carried out with respect to the liquid crystal display panel so as to carry out the display reset operation, the display control signal supplied from the controller allows the output circuits to carry out the respective output operations. This allows a memory (e.g., cholesteric) liquid crystal display device to carry out a display reset operation without causing display unevenness by simultaneously selecting a plurality of lines.
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