公开(公告)号：US10859736B2

公开(公告)日：2020-12-08

申请号：US15765918

申请日：2016-10-05

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Junya Eguchi ,  Yoshinari Matsuda ,  Hiroyuki Morikane ,  Shubou Taya ,  Yuki Tobe

IPC: G02B5/02 ,  B32B3/26 ,  G09F9/00 ,  G02B5/30

Abstract: Provided is an optical sheet which is excellent in anti-glare property, contrast, and image clarity, as well as capable of displaying a powerful moving image, wherein at least one surface of the optical sheet is an uneven surface, and the uneven surface satisfies following conditions (1) to (3), provided that Rz0.8 is a ten-point average roughness according to JIS B0601: 1994 with a cut-off value of 0.8 mm, Rz0.25 is a ten-point average roughness according to JIS B0601: 1994 with a cut-off value of 0.25 mm, and SD is a standard deviation of an arithmetic average roughness Ra0.8 according to JIS B0601: 1994 with a cut-off value of 0.8 mm: 0.300 μm≤Rz0.8≤0.650 μm  (1) 0.170 μm≤Rz0.25≤0.400 μm  (2) SD≤0.015 μm  (3).