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Title:
OPTICAL FILM
Document Type and Number:
Japanese Patent JP3134710
Kind Code:
B2
Abstract:

PURPOSE: To provide an optical film effective for improvement in visual field angle characteristic.
CONSTITUTION: At least one sheet of light control plates are obtd. by forming a compsn. contg. ≥2 kinds of photopolymerizable monomers and/or oligomers varying in refractive indices from each other to films, then irradiating the films with UV rays. This optical film is obtd. by laminating at least one sheet of phase difference films consisting of a thermoplastic resin and having an intra-surface retardation value of 50 to 300nm and a ratio of (intra-surface retardation value)/(retardation value in the thickness direction) of 0.5 to 1.8 and polarizing films.


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Inventors:
Koji Higashi
Akiko Shimizu
Suguru Honda
Shinichi Takemura
Application Number:
JP9835595A
Publication Date:
February 13, 2001
Filing Date:
April 24, 1995
Export Citation:
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Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
G02B5/30; G02F1/1335; G02F1/13363; G02F1/1337; (IPC1-7): G02B5/30; G02F1/1335; G02F1/13363
Domestic Patent References:
JP764069A
JP6194646A
JP5249316A
Attorney, Agent or Firm:
Takashi Kuboyama (1 person outside)



 
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