Optically Compensated Bend Mode(OCB Mode) with Wide Viewing Angle and Fast Response

Tetsuya MIYASHITA  Tatsuo UCHIDA  

IEICE TRANSACTIONS on Electronics   Vol.E79-C   No.8   pp.1076-1082
Publication Date: 1996/08/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on Liquid-Crystal Displays)
liquid crystal,  OCB mode,  display,  active matrix LCD,  

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To overcome the problem of narrow viewing angle in active matrix liquid crystal displasy(LCDs) in the twisted nematic mode(TN mode), we have proposed a new LCD mode using a bend-alignment cell with an optical compensator. In this new mode, we have successfully obtained a black state with almost no leakage over a wide viewing angle range with very fast response. We describe the fundamental principle and design rule of the optical compensator and discuss the properties obtained in theoretical and experimental term.