Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – Alignment layer of specified composition
Patent
1998-05-21
2000-10-31
Kelly, C. H.
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
Alignment layer of specified composition
2522994, 4284735, C09K 1900, C09K 1956, B32B 2700
Patent
active
061399264
ABSTRACT:
The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3',4,4'-benzophenone tetracarboxylic dianhydride and an aromatic diamine component containing at least one diamine of the group of formulae AI to AIII as given in the text. Further display devices and methods of their fabrication employing a photo alignment process are disclosed.
REFERENCES:
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patent: 5197727 (1993-03-01), Hanyu et al.
patent: 5612450 (1997-03-01), Mizushima et al.
patent: 5759442 (1998-06-01), Auman et al.
patent: 5846452 (1998-12-01), Gibbons et al.
patent: 5858273 (1999-01-01), Asaoka et al.
Yasufumi Iimura et al., Photo-Alignment Control of LC and its Applications to LCD Fabrication, SPIE, 3297, Jan. 8-18, 1998.
Auman Brian Carl
Bohm Edgar
Fiebranz Bernd
Zussman Melvin P.
E. I. Du Pont de Nemours and Company
Kelly C. H.
Merck Patent GmbH
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