US 11,940,685 B2
Antiglare transparent substrate and display device provided with same
Maya Hatano, Tokyo (JP); Satoshi Kanasugi, Tokyo (JP); and Masao Ozeki, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Nov. 17, 2020, as Appl. No. 16/950,391.
Application 16/950,391 is a continuation of application No. PCT/JP2019/019416, filed on May 15, 2019.
Claims priority of application No. 2018-096981 (JP), filed on May 21, 2018.
Prior Publication US 2021/0080778 A1, Mar. 18, 2021
Int. Cl. G02F 1/1335 (2006.01); C03C 15/00 (2006.01); C03C 21/00 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/133502 (2013.01) [C03C 15/00 (2013.01); C03C 21/002 (2013.01); G02F 1/133331 (2021.01)] 15 Claims
OG exemplary drawing
 
1. An antiglare transparent substrate comprising a transparent substrate which comprises a chemically strengthened glass and has a first main surface and a second main surface,
wherein the first main surface comprises:
a first smooth region having an arithmetic average roughness Ra of 0.05 nm or more and 2 nm or less; and
a first rough region having an arithmetic average roughness Ra larger than the arithmetic average roughness Ra of the first smooth region, and
wherein the second main surface comprises, in at least a part of a region facing the first smooth region, a second smooth region having an arithmetic average roughness Ra of 0.05 nm or more and 2 nm or less, and
wherein a surface compressive stress CS of the first smooth region is larger than a surface compressive stress CS of the first rough region.