OPTICAL FILM, AND POLARIZING PLATE, SURFACE PLATE, IMAGE DISPLAY PANEL AND IMAGE DISPLAY DEVICE USING THE OPTICAL FILM, AND METHOD FOR PRODUCING THE OPTICAL FILM, AND METHOD FOR SELECTING OPTICAL FILM, AND EVALUATION METHOD OF FINGER PRINT WIPING PROPERTY

An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare l...

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Bibliographic Details
Main Authors TANAKA, Masafumi, TSUJIMOTO, Jun, TAKEI, Michiaki, IKEDA, Keisuke, IWATA, Yukimitsu, FURUI, Gen
Format Patent
LanguageEnglish
Published 15.08.2024
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 μm or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp≤2.00 (Expression 1) wherein "Sw" represents a tilt angle (degrees) of 30 μl pure water droplet flowing down on the first surface; and "Vmp" represents a value of a peak material volume (ml/m2) of the first surface specified in ISO 25178-2:2012.
Bibliography:Application Number: US202418617293