公开(公告)号：JPH09185037A

公开(公告)日：1997-07-15

申请号：JP33457995

申请日：1995-12-22

Applicant: IBM

Inventor： NAKAMURA HAJIME ,  KIMURA YASUHIRO ,  SUEOKA KUNIAKI ,  TAIRA YOICHI ,  UCHIDA TATSUO

IPC: G02F1/137 ,  G02F1/133 ,  G02F1/139 ,  G09G3/36

Abstract: PROBLEM TO BE SOLVED: To shift an OCB cell from a spray orientation state to a bend orientation state in a short time by applying a voltage which is higher than an electric field needed to continue bend orientation between a display electrode (pixel electrode) and a common electrode. SOLUTION: When the power source is turned on, a power-on reset signal is outputted for t1 seconds, and a gate pulse which is about 20-20V similar to an ordinary gate pulse, but has a period much wider than that in ordinary gate timing is outputted to a gate line in the t1 seconds. The gate-on time of this driving method is set long to several msec - several sec. Consequently, the bend orientation as a nucleus is formed between the gate electrode and common electrode. Further, the whole pixel shifts to the bend orientation with the electric field applied between the display electrode and common electrode. As a higher and higher voltage is applied between the display electrode and common electrode, the shift to the bend orientation is faster and faster.