US 12,442,957 B2
Antiglare film, and polarizing plate, surface plate, and image display device that use same
Mitsuhiro Kuzuhara, Tsukuba (JP); Junya Eguchi, Okayama (JP); and Gen Furui, Okayama (JP)
Assigned to DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Appl. No. 17/421,204
Filed by DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
PCT Filed Jan. 10, 2020, PCT No. PCT/JP2020/000555
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2020/145370, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 2019-002903 (JP), filed on Jan. 10, 2019.
Prior Publication US 2022/0373720 A1, Nov. 24, 2022
Int. Cl. G02B 1/11 (2015.01); G02B 5/02 (2006.01); H10K 50/86 (2023.01); H10K 59/80 (2023.01); G02F 1/1335 (2006.01)
CPC G02B 1/11 (2013.01) [G02B 5/0221 (2013.01); G02B 5/0294 (2013.01); H10K 50/86 (2023.02); H10K 59/8791 (2023.02); G02F 1/133502 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An anti-glare film comprising:
a first main surface; and
a second main surface opposite to the first main surface,
wherein when a property of average inclination angle with a cut-off value of 0.8 mm of the first main surface is defined as θa0.8 and the average inclination angle with a cut-off value of 2.5 mm of the first main surface is defined as θa2.5, the anti-glare film satisfies the following Equations (1) and (2):
0.20 degrees≤θa0.8≤0.70 degrees  (1)
|θa2.5−θa0.8|≤0.10 degrees  (2).