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Title:
RETARDATION FILM AND MANUFACTURING METHOD OF THE SAME, OPTICAL FUNCTIONAL FILM, POLARIZATION FILM, AND DISPLAY APPARATUS
Document Type and Number:
Japanese Patent JP2012022339
Kind Code:
A
Abstract:

To provide a retardation film without causing problems of peeling off or the like of a retardation layer from a substrate when the retardation layer is formed, capable of easily obtaining an arbitrary retardation value even for a small amount, with high reliability, and having improved adhering property with a hydrophilic film such as a polarizing layer.

A retardation film comprises a polymer film containing a material having refractive index anisotropy. The material having the refractive index anisotropy has a concentration gradient in a thickness direction of the polymer film.


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Inventors:
SHIRAI KENJI
KASHIMA KEIJI
KURODA TSUYOSHI
YANAYA TAKESHI
Application Number:
JP2011224793A
Publication Date:
February 02, 2012
Filing Date:
October 12, 2011
Export Citation:
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Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G02B5/30; G02F1/1335; G02F1/13363
Domestic Patent References:
JP2003043250A2003-02-13
JP2004050516A2004-02-19
JP2005242293A2005-09-08
JP2000190385A2000-07-11
Attorney, Agent or Firm:
Akihiko Yamashita
Kishimoto Tatsuto



 
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