Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...
Reexamination Certificate
2004-06-24
2009-11-10
Sample, David R (Department: 1794)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
C428S001250, C428S001260, C349S123000, C349S135000
Reexamination Certificate
active
07615260
ABSTRACT:
An active-matrix liquid crystal display device includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, a group of electrodes for applying to the liquid crystal layer an electric field substantially parallel to the substrate plane and a plural number of active elements being formed on one of the pair of substrates, and an alignment layer disposed between the liquid crystal layer and at least one of the pair of substrates. The alignment layer is made from polyamic acid obtained by reacting a diamine with an acid anhydride, and the acid anhydride is at least one member selected from the group consisting of 1,2,3,4-cyclopentanetetracarboxylic acid dianhydride, 1,2,3,4-butanetetracarboxylic acid dianhydride, and 1,2,3,4-cyclobutanetetracarboxylic acid dianhydride.
REFERENCES:
patent: 5344916 (1994-09-01), Harris et al.
patent: 5480964 (1996-01-01), Harris et al.
patent: 5600464 (1997-02-01), Ohe et al.
patent: 5731404 (1998-03-01), Auman et al.
patent: 5731405 (1998-03-01), Gibbons et al.
patent: 5793459 (1998-08-01), Toko
patent: 5856431 (1999-01-01), Gibbons et al.
patent: 5928733 (1999-07-01), Yoneya et al.
patent: 6242060 (2001-06-01), Yoneya et al.
patent: 6756089 (2004-06-01), Yoneya et al.
patent: 644452 (1995-03-01), None
patent: 63-21907 (1988-05-01), None
patent: 5-505247 (1993-08-01), None
patent: 6-160878 (1994-06-01), None
patent: 7-110481 (1995-04-01), None
JPO Machine English Translation of JP 06-160878, Kondo et al., Jun. 7, 1994.
Iwasaki Kishiro
Kondo Katsumi
Nagae Yoshiharu
Tomioka Yasushi
Yokokura Hisao
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Hon Sophie
Sample David R
LandOfFree
Active-matrix liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active-matrix liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active-matrix liquid crystal display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4140003