Response Time Improvement of OCB Mode TFT-LCDs by Using Capacitively Coupled Driving Method

Kenji NAKAO  Shoichi ISHIHARA  Yoshinori TANAKA  Daiichi SUZUKI  Ichirou SATOU  Tsuyoshi UEMURA  Keisuke TSUDA  Noriyuki KIZU  Junichi KOBAYASHI  

IEICE TRANSACTIONS on Electronics   Vol.E84-C   No.11   pp.1624-1629
Publication Date: 2001/11/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electronic Displays)
Category: Active Matrix Displays
liquid crystal,  OCB,  CC driving method,  response time,  

Full Text: PDF>>
Buy this Article

We have developed a super-fast response OCB (Optically self-Compensated Birefringence) mode TFT-LCD by using capacitively coupled driving method (CC driving method). Response time with this driving method has been improved by the twice or more compared with that of a conventionally driven TFT-LCD. Even at a low temperature, 0 degree, this panel can response within one field time, 16.7 ms, between every gray scale levels. We developed a prototype OCB mode LCD with newly designed compensation films, that achieved a wide viewing angle characteristic of 160 degrees horizontally and 140 degrees vertically under the condition of that the contrast ratio exceeds 10:1.