光学積層体及びその製造方法、前面板、並びに画像表示装置

Japanese Patent JP7056701

B2

Provided are [1] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.0×107 Ω/□ or more and 1.0×1010 Ω/□ or less, and a standard deviation σ of the surface resistivity is 5.0×108 Ω/□ or less, [2] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein the substrate film is a cycloolefin polymer film, a ratio of a thickness of the substrate film to a thickness of the entire optical laminate is 80% or more and 95% or less, and a rate of elongation of the optical laminate at a temperature of 150° C., as measured using a dynamic viscoelasticity measuring apparatus under conditions of a frequency of 10 Hz, a tensile load of 50 N and a rate of temperature increase of 2° C./min, is 5.0% or more and 20% or less, and [3] an optical laminate comprising a cellulose-based substrate film, a stabilization layer and a conductive layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.0×107 Ω/□ or more and 1.0×1012 Ω/□ or less, and a value obtained by dividing a standard deviation σ of the surface resistivity by the average value is 0.20 or less; as well as a method for producing the optical laminate, a front panel and an image display device.

Kana Yamamoto
Masayuki Tsunekawa
Iwasaki Shinki
Takanao Nomura
Hiroki Nakagawa
Takanori Hamada
Eishi Oishi
Kuni Satoshi
Masataka Nakajima

JP2020152375A

April 19, 2022

September 10, 2020

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Dai Nippon Printing Co.,Ltd.

B32B27/00; B32B27/18; G02B5/30; G02F1/1333

WO2014069378A1
WO2014069377A1

Otani patent office

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