Optical laminate and production method therefor, front panel, and image display device

Abstract

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 1.0×107Ω/ or more and 1.0×1010Ω/ or less, and a standard deviation σ of the surface resistivity is 5.0×108Ω/ 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 1.0×107Ω/ or more and 1.0×1012Ω/ 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.

Dependencies are inferred from the claim text.