Liquid crystal display apparatus

Details Liquid crystal display apparatus Liquid crystal display apparatus

2006-05-31

2008-03-25

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S141000

Reexamination Certificate

active

07349049

ABSTRACT:
A liquid crystal display apparatus includes a pair of substrates, a liquid crystal layer arranged therebetween, a plurality of electrodes formed on one substrate for applying an electric field substantially in parallel to a face of the substrate, a plurality of active elements connected to the electrodes, and an alignment control layer formed on a face of at least one of the substrates and being in contact with said liquid crystal layer. A surface of the alignment control layer which is in contact with the liquid crystal layer has stepped difference portions, and a ratio a/d between a height of a maximum one of the stepped difference portions and a maximum thickness d of said liquid crystal layer has a range of 0.02-1. The alignment control film is made from a polyamic acid obtained by reacting a diamine with an acid anhydride of 1,2,3,4-cycle butane-tetracarboxylic acid dianhydrides.

REFERENCES:
patent: 4749777 (1988-06-01), Kohtoh et al.
patent: 4759610 (1988-07-01), Yanagisawa
patent: 5150235 (1992-09-01), Haim et al.
patent: 5571579 (1996-11-01), Kato et al.
patent: 5576862 (1996-11-01), Sugiyama
patent: 5598285 (1997-01-01), Kondo
patent: 5650638 (1997-07-01), Harris
patent: 5756649 (1998-05-01), Mizushima et al.
patent: 5852485 (1998-12-01), Shimada et al.
patent: 5955245 (1999-09-01), Choi
patent: 5995186 (1999-11-01), Hiroshi
patent: 6091471 (2000-07-01), Kim et al.
patent: 6184957 (2001-02-01), Mori
patent: 6414737 (2002-07-01), Reznikov
patent: 0 676 661 (1995-10-01), None
patent: 61-121033 (1986-06-01), None
patent: 5-196946 (1993-08-01), None
patent: 9-101538 (1997-04-01), None
ASIA Display 95, “S30-2 Development of Super-TFT-LCDs with In-Plane Switching Display Mode”, Ohta, M. Oh-e, K. Kondo.
SID 96 Digest, 8.1: Invited Paper: Wide-Viewing-Angle Displays with In-Plane Switching Mode of nematic LCs Addressed by 13.3-in. XGA TFTs pp. 81-84.

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