Optical film, method for manufacturing the same, and phase...

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...

Reexamination Certificate

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C428S001200, C428S001310, C428S001500, C428S001600, C349S117000, C252S299700, C252S299010

Reexamination Certificate

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10499963

ABSTRACT:
A method for preparing an optical film, which comprises applying and developing an application liquid mixture containing a liquid crystal monomer, a chiral agent and a polymerization initiator on an orientation substrate, subjecting the resultant developed layer to a heat treatment, to orient the monomer to a cholesteric structure, and then subjecting the developed layer to a poltmerization treatment, to polymerize the oriented liquid crystal monomer, thereby forming an optical film exhibiting a selective reflection wave length of 100 to 320 nm. An optical film prepared by the above method is reduced in the coloring due to selective reflection.

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Kaoru Kimura et al.,High-performance Adhesive and Pressure-sensitive Adhesive, Kyoritsu Publication Co., Feb. 20, 1989.
Office Action of Corresponding Japanese Patent Application No. 2003-010101.

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