发明名称 |
Driving method for optical modulation device |
摘要 |
An optical modulation device comprises scanning electrodes and signal electrodes disposed opposite to and intersecting with the signal electrodes, and an optical modulation material disposed between the electrodes, a pixel being formed at each intersection of the electrodes and showing a contrast depending on the polarity of a voltage applied thereto. The device is driven by a method comprising, in a writing period for writing in all or prescribed pixels among the pixels on a selected scanning electrode, a first phase for applying a voltage of one polarity having an amplitude exceeding a first threshold voltage of the optical modulation material to the all or prescribed pixels, and a second phase for applying a voltage of the other polarity having an amplitude exceeding a second threshold voltage of the optical modulation material to a selected pixel and applying a voltage not exceeding the threshold voltages of the optical modulation material to the other pixels, respectively among the all or prescribed pixels. The duration of a continually applied voltage of the same polarity applied to a pixel on a scanning electrode is 2.5 times the duration of the first phase in the writing period at the maximum.
|
申请公布号 |
US5847686(A) |
申请公布日期 |
1998.12.08 |
申请号 |
US19950421863 |
申请日期 |
1995.04.14 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
MOURI, AKIHIRO;TOYONO, TSUTOMU;KANEKO, SHUZO;INABA, YUTAKA;KANBE, JUNICHIRO |
分类号 |
G09G3/36;H01L31/18;(IPC1-7):G09G3/36 |
主分类号 |
G09G3/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|