Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – Alignment layer of specified composition
Reexamination Certificate
2006-01-19
2009-06-02
Visconti, Geraldina (Department: 1795)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
Alignment layer of specified composition
C428S001100, C428S001300, C252S299010, C252S299600, C430S020000
Reexamination Certificate
active
07541073
ABSTRACT:
The present invention provides a composition for forming a liquid crystal alignment film, which comprises a photoreactive polymer including a multicyclic compound having a photoreactive group on a main chain thereof. The present invention also provides a liquid crystal alignment film produced using the composition, and a liquid crystal display including the liquid crystal alignment film. The photoreactive polymer including the multicyclic compound on the main chain thereof has a high glass transition temperature, thus thermal stability is excellent. Since lattice vacancy is relatively large, the photoreactive group is capable of moving relatively freely in the main chain of the polymer, thus it is possible to improve a slow photoreaction rate, which is considered a disadvantage of a conventional polymer material.
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patent: 2006/0160970 (2006-07-01), Kim et al.
patent: 11-181127 (1999-07-01), None
patent: 2002-047318 (2002-02-01), None
patent: 10-2002-0023172 (2002-03-01), None
Dyaduysha, Andrey, et al.,Pecularity of an Oblique Liquid Crystal Alignment Induced by a Photosensitive Orientant, Jpn. J. Appl. Phys. vol. 34, 1995, pp. L1000-L1002.
Schadt, Martin, et al.,Surface-Induced Parallel Alighment of Liquid Crystals by Linearly Polymerized Photopolymers, Jpn. J. Appl. Phys. vol. 31, 1992, pp. 2155-2164.
Chun Sung Ho
Jeong Hye Won
Kim Heon
Kim Kyung Jun
Lee Byung Hyun
LG Chem Ltd.
McKenna Long & Aldridge LLP
Visconti Geraldina
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