OPTICAL FILM, AND FRONT PANEL OF IMAGE DISPLAY DEVICE, IMAGE DISPLAY DEVICE, MIRROR WITH IMAGE DISPLAY FUNCTION, RESISTIVE TOUCH PANEL AND CAPACITIVE TOUCH PANEL EACH OF WHICH COMPRISES SAID OPTICAL FILM

WIPO Patent Application WO/2018/179893

A1

Provided are: an optical film which is sufficiently suppressed in interference irregularity, while having excellent keying durability and the like; and a front panel of an image display device, an image display device, a mirror with image display function, a resistive touch panel and a capacitive touch panel, each of which comprises this optical film. This optical film comprises at least a first resin film, an adhesive layer that is arranged on one surface of the first resin film, and a second resin film that is arranged on the adhesive layer. The refractive indexes nA, nB and nC and the tensile elastic moduli EA, EB and EC of the first resin film, the adhesive layer and the second resin film satisfy the formulae below; and the total thickness of the first resin film, the adhesive layer and the second resin film is more than 100 μm. |nA - nB| ≤ 0.03 formula (1) |nC - nB| ≤ 0.03 formula (2) |EA - EB| ≤ 4.0 GPa formula (3) |EC - EB| ≤ 4.0 GPa formula (4) 2.0 GPa ≤ EA formula (5) 2.0 GPa ≤ EB formula (6) 2.0 GPa ≤ EC formula (7)

TAMADA TAKASHI (JP)
UEKI KEIGO (JP)
FUKUSHIGE YUICHI (JP)
TAKADA KATSUYUKI (JP)

PCT/JP2018/004448

October 04, 2018

February 08, 2018

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FUJIFILM CORP (JP)

G02B1/11; B32B7/02; G02B5/30; G06F3/041; H01L51/50; H05B33/02

WO2004070737A1	2004-08-19
WO2014171479A1	2014-10-23
WO2013150892A1	2013-10-10

JP2011102003A	2011-05-26
JP2012091406A	2012-05-17
JP2014136386A	2014-07-28
JP2007233215A	2007-09-13
JP2016114938A	2016-06-23

NAKASHIMA Junko et al. (JP)

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