US 12,228,753 B2
Anti-glare film
Yoshitaka Sugawara, Tokyo (JP); and Masaki Hayashi, Tokyo (JP)
Assigned to DAICEL CORPORATION, Osaka (JP)
Filed by DAICEL CORPORATION, Osaka (JP)
Filed on Dec. 8, 2023, as Appl. No. 18/534,161.
Application 18/194,302 is a division of application No. 16/618,530, granted, now 11,650,357, issued on May 16, 2023, previously published as PCT/JP2018/023953, filed on Jun. 25, 2018.
Application 18/534,161 is a continuation of application No. 18/194,302, filed on Mar. 31, 2023, granted, now 11,880,051.
Claims priority of application No. 2017-151463 (JP), filed on Aug. 4, 2017.
Prior Publication US 2024/0103206 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/02 (2006.01)
CPC G02B 5/0242 (2013.01) [G02B 5/0268 (2013.01)] 4 Claims
 
1. An anti-glare film attached on a surface of a display, the anti-glare film comprising an anti-glare layer,
wherein the anti-glare layer is set to have a sparkle value falling within a range from 6 to 10, a value of specular gloss of 30% or less, a value of transmission image clarity of 4.5% or less, and a haze value of 50% or less,
wherein the sparkle value is defined based on a value of a standard deviation of luminance distribution of the display under a state in which the anti-glare film is attached on the surface of the display,
wherein the specular gloss is measured with 60-degree specular gloss,
wherein the transmission image clarity has an optical comb of 0.5 mm,
wherein the anti-glare layer includes a matrix resin and a plurality of fine particles dispersed in the matrix resin, the fine particles having an average particle diameter that is a value falling within a range from 0.5 μm to 5.0 μm, and
wherein the fine particles form recesses and protrusions on a surface of the anti-glare layer.