Multi-functional monomer having a photoreactive group,...

Details Multi-functional monomer having a photoreactive group,... Multi-functional monomer having a photoreactive group,...

2006-09-22

2010-02-02

Sample, David R (Department: 1794)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001200, C252S299660, C252S299670, C427S520000, C427S521000, C427S163100, C349S124000, C525S304000

Reexamination Certificate

active

07655284

ABSTRACT:
Disclosed is a multi-functional monomer including a heat-curable functional group as well as a typical photoreactive group. In the multi-functional monomer, the photoreactive group is not chained to a main chain of a polymer. Thus, since it is possible to perform desirable alignment treatment even though polarized UV is radiated for a short time, the production time and the production cost are reduced and alignment regulating force of liquid crystals is increased, thereby increasing a dichroic ratio.

REFERENCES:
patent: 5998101 (1999-12-01), Park et al.
patent: 6833391 (2004-12-01), Chisholm et al.
patent: 7070838 (2006-07-01), Sasada et al.
patent: 11-181127 (1999-07-01), None
patent: 2004-188679 (2004-07-01), None
patent: WO 2004/002935 (2004-01-01), None
Jeoung-Yeon Hwang et al., “Liquid Crystal Alignment and Pretilt Angle Generation on a Photopolymer Layer Based on N-(phenyl)maleimide,” Liquid Crystals, 2002, vol. 29, No. 8, pp. 1047-1050.

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