ORGANIC ELECTROLUMINESCENCE IMAGE DISPLAY DEVICE

WIPO Patent Application WO/2013/031364

A1

The purpose of the present invention is to provide an organic electroluminescence image display device which exhibits excellent visibility, durability and light resistance, wherein a panel does not warp when the temperature within the device increases even if the device has a large screen. This organic electroluminescence image display device is at least provided with an organic electroluminescence element and a circularly polarizing plate having a λ/4 plate, wherein the λ/4 plate contains a cellulose acetate in which an acetyl group substitution degree is in the range of 2.00 and 2.70, and has a planar retardation value (Ro(550)) represented by formula (1) in the range of 100 and 180 nm, formula (1) being Ro(550)=(nx-ny)×d(nm), and a maximum planar elasticity of 4.0GPa or more when measured in an environment having a temperature of 23°C and a humidity of 55 RH%.

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REN RIEKO (JP)
TASAKA KOJI (JP)
TASHIRO KOUJI (JP)

PCT/JP2012/066568

March 07, 2013

June 28, 2012

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KONICA MINOLTA ADVANCED LAYERS (JP)
REN RIEKO (JP)
TASAKA KOJI (JP)
TASHIRO KOUJI (JP)

H05B33/02; C08K5/1545; C08L1/12; G02B5/30; H01L51/50

WO2008136266A1

2008-11-13

JP2010212184A	2010-09-24
JP2002022959A	2002-01-23
JP2007009193A	2007-01-18
JP2012181318A	2012-09-20

KOYO INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Mitsuaki international patent firm (JP)

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