US 12,459,859 B2
Glass article and method for manufacturing the same
Su Jin Sung, Hwaseong-si (KR); Byung Hoon Kang, Hwaseong-si (KR); Seung Kim, Seongnam-si (KR); Young Ok Park, Hwaseong-si (KR); and Gyu In Shim, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jan. 12, 2024, as Appl. No. 18/412,320.
Application 18/412,320 is a division of application No. 16/926,488, filed on Jul. 10, 2020, granted, now 11,912,613.
Claims priority of application No. 10-2019-0169013 (KR), filed on Dec. 17, 2019.
Prior Publication US 2024/0150234 A1, May 9, 2024
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); C03B 27/03 (2006.01); C03C 3/083 (2006.01); C03C 21/00 (2006.01); G02F 1/1333 (2006.01); C03C 3/04 (2006.01); C03C 3/085 (2006.01)
CPC C03C 21/002 (2013.01) [C03B 27/03 (2013.01); C03C 3/083 (2013.01); G02F 1/133308 (2013.01); G02F 1/133331 (2021.01); C03C 3/04 (2013.01); C03C 3/085 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A glass article including lithium aluminosilicate, comprising:
a first surface;
a second surface opposed to the first surface;
a first compressive region extending from the first surface to a first compression depth;
a second compressive region extending from the second surface to a second compression depth; and
a tensile region disposed between the first compression depth and the second compression depth,
wherein a stress profile of the first compressive region includes a crack prevention zone including a peak, the crack prevention zone being disposed in a depth range of 30 micrometers to 70 micrometers,
wherein the peak of the crack prevention zone has a maximum value in the depth range,
a depth of the peak of the crack prevention zone has a value of 40 micrometers or more,
a stress profile of the first compressive region has a first local minimum point at which the stress profile is convex downward,
a depth of the first local minimum point is 0.24 times to 0.31 times the first compression depth, and
the first compression depth ranges from 105 micrometers to 115 micrometers.