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

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United States of America

PATENT NO 12248121
APP PUB NO 20240272331A1
SERIAL NO

18686673

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
DAI NIPPON PRINTING CO LTDTOKYO JAPAN TOKYO METROPOLIS

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furui, Gen Okayama, JP 47 310
Ikeda, Keisuke Okayama, JP 87 445
Iwata, Yukimitsu Okayama, JP 48 447
Takei, Michiaki Okayama, JP 4 4
Tanaka, Masafumi Misato, JP 55 934
Tsujimoto, Jun Bizen, JP 16 41

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