Optical compensation films with disk groups for liquid...

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Reexamination Certificate

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C428S001300, C349S117000, C526S262000

Reexamination Certificate

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07989036

ABSTRACT:
Optical compensation films (positive C-plate) with disk anisotropic subunits (OASUs) that have high positive birefringence throughout the wavelength range 400 nm<λ<800 nm are provided. The optical compensation films may be processed by solution casting to yield a polymer film with high birefringence without the need for stretching, photopolymerization, or other processes. Such optical compensation films are suitable for use as a positive C-plate in LCDs, particularly IPS-LCDs.

REFERENCES:
patent: 5189538 (1993-02-01), Arakawa
patent: 5290887 (1994-03-01), Hefner et al.
patent: 5387657 (1995-02-01), Hefner et al.
patent: 6115095 (2000-09-01), Suzuki et al.
patent: 6175400 (2001-01-01), Duncan et al.
patent: 7037443 (2006-05-01), Shuto et al.
patent: 7135211 (2006-11-01), Shuto et al.
patent: 7227602 (2007-06-01), Jeon et al.
patent: 7236221 (2007-06-01), Ishikawa et al.
patent: 2005/0057714 (2005-03-01), Jeon et al.
patent: 2005/0200792 (2005-09-01), Jeon et al.
patent: 2005/0270458 (2005-12-01), Ishikawa et al.
patent: 2006/0114383 (2006-06-01), Kobayashi et al.
patent: 2008/0237552 (2008-10-01), Zhang et al.
patent: 2008/0239491 (2008-10-01), Zheng et al.
patent: 2008/0241427 (2008-10-01), Harris et al.
patent: 2008/0241565 (2008-10-01), Germroth et al.
patent: 2009/0068380 (2009-03-01), Zheng et al.
patent: 1 506 991 (2005-02-01), None
Database WPI Week 199238, Thomson Scientific, London, GB; AN 1992-311534, XP002493166, 1992.
Zhang D et al. “Mesogen-Jacketed Liquid Crystal Polymers with Mesogens of Aromatic Amide Structure” Polymers for Advanced Technologies, Wiley & Sons, Bognor Regis, GB, vol. 8, No. 4, Apr. 1, 1997, pp. 227-233, XP000691535.
Zhang et al., “Synthesis of a New Side-Chain Type Liquid Crystal Polymer Poly[dicyclohexyl vinylterephtalate]” Macromolecules, ACS, Washington, DC, US, vol. 32, Jan. 1, 1999,pp. 4494-4496, XP002495422, ISSN: 0024-9297.
Zhao et al., “Synthesis and characterization of diblock copolymers based on crystallizable poly(ε-caprolactone) and mesogen-jacketed liquid crystalline polymer block” Polymer, Elsevier Science Publishers B.V, GB, vol. 46, No. 14, Jun. 27, 2005, pp. 5396-5405, XP004924379, ISSN: 0032-3861.
Li et al. “Hierarchical Assembly of a Series of Rod-Coil Block Copolymers: Supramolecular LC Phase in Nanoenviroment”, Macromolecules 2004, 37, 2854-2860.
Luo et al. “Conduction mechanism in a novel oxadiazole derivative: effects of temperature and hydrostatic pressure”, J. Phys. D: Appl. Phys. 38 (2005) 1132-1135. IOP Publishing Ltd Printed in the UK.
Chai et al. “Synthesis and characterization of mesogen-jacketed liquid crystalline polymer containing 1,3,4-oxadiazole”, Gaofenzi Xuebao 2006(3) 532-535.
International Search Report dated Sep. 22, 2008 issued in corresponding PCT Application No. PCT/US2008/057806.
Database WPI Week 200728, Thomson Scientific, London, GB; AN 2007-286791, XP002494611, 2007.

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