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Title:
FILM FOR IMPROVING VIEWING ANGLE AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2012220662
Kind Code:
A
Abstract:

To provide a film for improving a viewing angle achieving both of a viewing angle improving effect and suppression of decrease in front brightness in high levels while suppressing changes in tones and being installed in an observer's side with respect to a liquid crystal layer of a liquid crystal display device.

A light diffusion film is obtained by fusing and extrusion-molding a mixture composed of at least two kinds of resins incompatible with each other. In the film for improving the viewing angle, a ratio (I60/I0×100) measured by a method described in the specifications, of the transmittance (I0) at an emission angle of 0 degree of light having a wavelength of 550 nm in a main diffusion direction to the transmittance (I60) at an emission angle of 60 degrees is 0.06 to 1.0%.


Inventors:
YASUI AKIFUMI
KAWAI KENJI
KUZE KATSURO
IMAI KAZUMOTO
MATSUDA AKIRA
Application Number:
JP2011085320A
Publication Date:
November 12, 2012
Filing Date:
April 07, 2011
Export Citation:
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Assignee:
TOYO BOSEKI
International Classes:
G02B1/10; G02B5/02; G02B1/11; G02B1/14; G02F1/1335
Domestic Patent References:
JP2007196682A2007-08-09
JP2004333716A2004-11-25
JP2010152229A2010-07-08
JP2004341309A2004-12-02
JP2003270411A2003-09-25
JPH11223711A1999-08-17
JP2009036892A2009-02-19
JP2007249210A2007-09-27
JPH11142622A1999-05-28
JP2009043506A2009-02-26
Foreign References:
WO2010113741A12010-10-07
WO2005124399A12005-12-29



 
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