US 12,304,855 B2
Chemically strengthened glass and method for manufacturing same
Yusuke Fujiwara, Tokyo (JP); Yoichi Takato, Tokyo (JP); Yusuke Kobayashi, Tokyo (JP); Masao Ozeki, Tokyo (JP); Yusuke Morishima, Tokyo (JP); and Takumi Nagasako, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Jul. 17, 2024, as Appl. No. 18/775,847.
Application 18/775,847 is a continuation of application No. 18/768,142, filed on Jul. 10, 2024.
Application 18/768,142 is a continuation of application No. PCT/JP2023/040661, filed on Nov. 10, 2023.
Claims priority of application No. 2022-182870 (JP), filed on Nov. 15, 2022; application No. 2023-054157 (JP), filed on Mar. 29, 2023; and application No. 2023-170427 (JP), filed on Sep. 29, 2023.
Prior Publication US 2024/0368032 A1, Nov. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/083 (2006.01); C03C 3/076 (2006.01); C03C 19/00 (2006.01); C03C 21/00 (2006.01); H10F 19/80 (2025.01)
CPC C03C 3/083 (2013.01) [C03C 3/076 (2013.01); C03C 21/002 (2013.01); H10F 19/804 (2025.01); H10F 19/807 (2025.01); C03C 19/00 (2013.01); C03C 2204/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A chemically strengthened glass, comprising:
a glass having a composition comprising, in mol % based on oxides, 60% or more of SiO2 and 15% or less of Al2O3.
wherein the glass has having a thickness of more than 2 mm, a surface compressive stress CS0 of 400 MPa to 1,200 MPa, a depth of compressive stress layer DOL-tail of 2.7 μm to 30.0 μm, an absolute value of an average slope of a stress profile from a surface to the DOL-tail of 59 MPa/μm to 500 MPa/μm, a tensile stress CT of 1.0 MPa to 2.6 MPa, and an integrated value, MPa·μm, of the tensile stress of 20,000 or less.