发明授权
US5543945A Method of driving an LCD employing combining two voltages which change
polarity at different times in a frame
失效
通过组合在帧中不同时刻改变极性的两个电压来驱动LCD的方法
- 专利标题： Method of driving an LCD employing combining two voltages which change polarity at different times in a frame
- 专利标题（中）： 通过组合在帧中不同时刻改变极性的两个电压来驱动LCD的方法
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申请号： US257437申请日： 1994-06-08
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公开(公告)号： US5543945A公开(公告)日： 1996-08-06
- 发明人: Yuji Kimura , Eiichi Ohta , Hitoshi Kondo , Masaetsu Takahashi , Kenji Kameyama , Katsuyuki Yamada
- 申请人： Yuji Kimura , Eiichi Ohta , Hitoshi Kondo , Masaetsu Takahashi , Kenji Kameyama , Katsuyuki Yamada
- 申请人地址： JPX Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-042645 19910214; JPX3-248232 19910902
- 主分类号： G02F1/133
- IPC分类号： G02F1/133 ; G09G3/18 ; G09G3/36 ; G02F1/1343
摘要：
The present invention discloses a method of operating an active matrix liquid crystal display device having a liquid crystal layer between a pair of substrates and at least one active device to each of picture element electrodes on at least one of the substrates, so that a driving signal applied to a picture element electrode during one frame cycle is always on a side of a voltage having an identical polarity, which is substantially free from scattering in the display, can be operated at a low driving voltage and obtain high contrast.
公开/授权文献
- US4907090A Projection television screen protector 公开/授权日：1990-03-06
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