Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – Alignment layer of specified composition
Reexamination Certificate
2006-03-27
2009-12-29
Sample, David R (Department: 1794)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
Alignment layer of specified composition
C349S126000
Reexamination Certificate
active
07638175
ABSTRACT:
An alignment film for controlling orientation of liquid crystal molecules is formed of an organic silicon material which includes in its molecule an affinity imparting group for enhancing affinity to the liquid crystal molecules and an orientation characteristic imparting group for controlling orientation of the liquid crystal molecules. The affinity imparting group is at least one selected from the group comprising a vinyl group, an alkylene group, and a cyanoalkyl group, and the orientation characteristic group is at least one selected from the group comprising a phenyl group, a substituted phenyl group, a phenyl-alkyl group, a substituted phenyl-alkyl group, a branched alkyl group having carbon atoms of 3 to 12. Preferably, the organic silicon material includes organopolysilsesquioxane having a cage structure or a partially cleaved cage structure. A liquid crystal panel having the alignment film, and electronic equipment provided with the liquid crystal panel are also provided.
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JPO Website Machine English Translation of JP 2004-341165, Hirai et al., Dec. 12, 2004.
Communication from European Patent Office re: related application.
Harness & Dickey & Pierce P.L.C.
Hon Sophie
Sample David R
Seiko Epson Corporation
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