IP Library › Granted Patent US 12,534,626
Granted Patent B2
US 12,534,626 · App. 16/610,699 · Granted Jan 27, 2026

Antiglare film

Inventors: Masaki Hayashi (Tokyo, JP); Yoshitaka Sugawara (Tokyo, JP)
Assignee: DAICEL CORPORATION
C09D5/006C08J7/043C08J7/046C09D133/08G02B5/021G02B5/0268
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Quick Facts
Patent No.
US 12,534,626
App. No.
16/610,699
Granted
Jan 27, 2026
Kind
B2
Abstract

The antiglare film of the present invention is provided with an antiglare layer having a haze value in a range from 50% to 99%, and in a state where the antiglare film is mounted on a surface of a display, a standard deviation of luminance distribution of the display is a value in a range from 0 to 6, and transmission image clarity at an optical comb width of 0.5 mm is a value in a range from 0% to 60%.

Claims (7)

1 . An antiglare film comprising an antiglare layer that comprises a matrix resin and a plurality of microparticles in the matrix resin, the antiglare layer having a haze value in a range from 67.8% to 99%,

wherein in a state where the antiglare film is mounted on a surface of an organic electro-luminescence display having a pixel density of 441 ppi, a standard deviation of luminance distribution of the organic electro-luminescence display being a value in a range from 0 to 6 in a case where the organic electro-luminescence display is adjusted such that image data is obtained as a gray scale image with an 8-bit gradation display and an average luminance of 170 gradations, and transmission image clarity at an optical comb width of 0.5 mm being a value in a range from 0% to 60%,

wherein in the antiglare layer, a plurality of secondary particles are formed by aggregating the plurality of microparticles, and a distributed structure of recesses and protrusions is formed on a surface of the antiglare layer by the plurality of secondary particles, and

wherein the antiglare layer comprises, as the plurality of microparticles, a plurality of microparticles having an average particle size in a range from 2.0 μm to 5.0 μm and being either microparticles formed solely from an inorganic material, acrylic particles, polycarbonate particles, or polyethylene particles, and the antiglare layer excludes any other particles including those having a particle size in a range less than 2.0 μm.

2 . The antiglare film according to claim 1 , wherein

a refractive index difference between the microparticles and the matrix resin is a value in a range from 0 to 0.07.

3 . The antiglare film according to claim 2 , wherein a ratio G2/G1 of a weight G1 of the matrix resin of the antiglare layer to a total weight G2 of the plurality of microparticles included in the antiglare layer is a value a range from 0.07 to 0.20.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 5, 2019
From: HAYASHI, MASAKI; SUGAWARA, YOSHITAKA
To: DAICEL CORPORATION
Reel/Frame 050912/0383 →
Priority Claims (1)
JP 2017-151496 · Aug 4, 2017 · national
Continuity (1)
Related Publication 20200158922A1 · May 21, 2020
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