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Title:
ANISOTROPIC LIGHT-DIFFUSING FILM, ANISOTROPIC LIGHT-DIFFUSING FILM WITH ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/080130
Kind Code:
A1
Abstract:
An anisotropic light-diffusing film according to an aspect of the present invention has at least one first layer capable of scattering incident light in the traveling direction of the light, and the ratio (60° brightness ratio / front brightness ratio) between a 60° brightness ratio and a front brightness ratio which are obtained by the following methods is 0.30-0.60 inclusive.　<60° brightness ratio> In the light-diffusing film, the ratio (C/B) between a brightness C in a direction inclined at 60° in a light diffusion direction from the direction of a normal N to a film surface and a front brightness B in the direction of the normal N to the film surface is defined as the 60° brightness ratio.　 The ratio (B/A) between the front brightness B of the light-diffusing film and a front brightness A in the direction of a normal N to a film surface in a blank sample satisfying conditions (1) and (2) is defined as the front brightness ratio.　[Blank sample] Condition (1): The total light transmittance measured in conformity with JIS K7361-1 is 90% or more.　Condition (2): The haze measured in conformity with JIS K7136 is 1% or less.

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Inventors:
HARADA TOMOAKI (JP)
MUTA TAKATOSHI (JP)
NAKAMURA HIROKI (JP)
Application Number:
PCT/JP2022/040850
Publication Date:
May 11, 2023
Filing Date:
November 01, 2022
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
G02B5/02; B32B7/023; B32B27/00; C08L67/00; C08L67/02; C08L69/00; C08L101/00; G02F1/1335; G03B21/62; G09F9/00; G09F9/30
Domestic Patent References:
WO2015030036A12015-03-05
Foreign References:
JP2009277553A2009-11-26
JP2009157029A2009-07-16
JP2002001858A2002-01-08
JP2001159704A2001-06-12
JP2003075643A2003-03-12
JP2003050306A2003-02-21
JP2014038171A2014-02-27
JP2014535127A2014-12-25
JP2008241889A2008-10-09
Attorney, Agent or Firm:
ICHIZAWA, KAWADA & ASSOCIATES (JP)
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