Invention Grant
- Patent Title: Method and apparatus for driving active matrix liquid crystal device
- Patent Title (中): 驱动有源矩阵液晶装置的方法和装置
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Application No.: US478096Application Date: 1995-06-07
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Publication No.: US5675351APublication Date: 1997-10-07
- Inventor: Shuzo Kaneko , Akio Yoshida , Ryoji Fujiwara
- Applicant: Shuzo Kaneko , Akio Yoshida , Ryoji Fujiwara
- Applicant Address: JPX Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JPX Tokyo
- Priority: JPX2-69546 19900322; JPX2-69547 19900322
- Main IPC: G09G3/20
- IPC: G09G3/20 ; G09G3/36
Abstract:
An active matrix liquid crystal device is driven by sequentially applying a first scanning pulse to reset each pixel on a first selected line, a second scanning pulse to write each pixel on a second selected line and a third scanning pulse to provide a voltage signal which is equal to or less than the optical threshold value of the liquid crystal to each pixel on a third selected line. According to the driving method, the first, second and third selected lines are spaced at a predetermined number of lines from each other, and a sum of time integrated values of the applied voltage signals is or approaches zero.
Public/Granted literature
- US4998228A Drinking water filter Public/Granted day:1991-03-05
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