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Title:
OPTICAL FILM, POLARIZING PLATE, LIQUID CRYSTAL CELL, LIQUID CRYSTAL DISPLAY APPARATUS, IMAGE DISPLAY APPARATUS AND MANUFACTURING METHOD OF OPTICAL FILM
Document Type and Number:
Japanese Patent JP2008003573
Kind Code:
A
Abstract:

To provide an optical film by which occurrence of display irregularity can be suppressed when used for an image display apparatus, or the like.

A close contact layer made of a polyurethane resin is formed on a transparent polymer film layer comprising a transparent polymer film and a birefringent layer made of a non-liquid crystal polymer is formed on the close contact layer to constitute the optical film. In the optical film, standard deviation of luminance in its surface is 1.375 or less.


Inventors:
Takada, Yuki
Fujiwara, Makoto
Takamura, Ryuichi
Application Number:
JP2007000125713
Publication Date:
January 10, 2008
Filing Date:
May 10, 2007
Export Citation:
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Assignee:
NITTO DENKO CORP
International Classes:
G02B5/30; B32B7/02; B32B27/40; G02F1/13363
Attorney, Agent or Firm:
藤本 昇