公开(公告)号：US20230250015A1

公开(公告)日：2023-08-10

申请号：US18301290

申请日：2023-04-17

Applicant: AGC Inc.

Inventor： Qing LI ,  Akio KOIKE ,  Eriko MAEDA

IPC: C03C21/00 ,  C03C3/083 ,  C03C4/00

CPC classification number: C03C21/002 ,  C03C3/083 ,  C03C4/0028 ,  C03C10/0027

Abstract: The present invention pertains to a glass for strengthening, that: has an average transmittance of at least 70% when converted to a thickness of 0.8 mm at a wavelength of 380-780 nm; has a haze value of no more than 0.7% when converted to a thickness of 0.8 mm in a C light source; has a Young's modulus of at least 85 GPa; has a fracture toughness value of at least 0.90 MPa·m1/2; a thermal conductivity at 20° C. of at least 1.3 W/m·K; and comprises a lithium aluminosilicate crystallized glass.

公开(公告)号：US20200239354A1

公开(公告)日：2020-07-30

申请号：US16747586

申请日：2020-01-21

Applicant: AGC Inc.

Inventor： Qing LI ,  Akio KOIKE ,  Kazuki KANEHARA

IPC: C03C3/097 ,  C03B32/02 ,  C03C21/00 ,  C03C3/083

Abstract: A crystallized glass that: has a visible light transmittance of at least 85% when the thickness thereof is converted to 0.8 mm; has a haze value of no more than 1.0% when the thickness thereof is converted to 0.8 mm; contains, in terms of mass % on an oxide basis, 58%-70% SiO2, 15%-30% Al2O3, 2%-10% Li2O, 0%-5% Na2O, 0%-2% K2O, 0%-1.8% SrO, 0%-2% BaO, 0.5%-6% SnO2, 0.5%-6% ZrO2, and 0%-6% P2O5; has a total SrO and BaO content of 0.1%-3%; and has a total Na2O and K2O content of 1%-5%.

公开(公告)号：US20240270626A1

公开(公告)日：2024-08-15

申请号：US18644271

申请日：2024-04-24

Applicant: AGC Inc.

Inventor： Qing LI ,  Yusuke ARAI ,  Akio KOIKE ,  Kazutaka ONO ,  Hitomi FURUTA ,  Shigeki SAWAMURA

IPC: C03C10/00 ,  C03C4/18 ,  C03C21/00 ,  H01L23/15

CPC classification number: C03C10/0027 ,  C03C4/18 ,  C03C21/002 ,  H01L23/15 ,  C03C2204/00

Abstract: A glass sheet, containing, in mass % on an oxide basis: 45-70% of SiO2, 1-15% of Al2O3, 10-25% of Li2O, 0-10% of Na2O, 0-5% of K2O, and 0-15% of ZrO2. K2O/R2O is 0.10 or less and ZrO2/R2O is 0.30 or more, where R2O is a total content of Li2O, Na2O, and K2O. The glass sheet has an average thermal expansion coefficient at 50° C.-350° C. of 90×10−7/° C.-140×10−7/° C. and a Young's modulus of 85 GPa or more.

公开(公告)号：US20220064054A1

公开(公告)日：2022-03-03

申请号：US17525554

申请日：2021-11-12

Applicant: AGC Inc.

Inventor： Qing LI ,  Kenji IMAKITA ,  Akio KOIKE ,  Eriko MAEDA

IPC: C03C10/00 ,  C03B23/025 ,  C03B32/02 ,  C03C4/00 ,  C03C21/00

Abstract: The present invention provides crystallized glass of three-dimensional shape for easily producing chemically strengthened glass of three-dimensional shape that resists damage and has exceptional transparency. This crystallized glass of three-dimensional shape:
contains crystals; has light transmittance in terms of a thickness of 0.8 mm of 80% or higher; and contains 45-74% SiO2, 1-30% Al2O3, 1-25% Li2O, 0-10% Na2O, 0-5% K2O, a total of 0-15% of SnO2 and/or ZrO2, and 0-12% P2O5, these amounts expressing the oxide-based mass percentage.

公开(公告)号：US20210009462A1

公开(公告)日：2021-01-14

申请号：US17034172

申请日：2020-09-28

Applicant: AGC Inc.

Inventor： Suguru MURAYAMA ,  Akio KOIKE

IPC: C03C3/087 ,  C03C21/00

Abstract: The purpose of the present invention is to provide a glass for chemical strengthening that exhibits a high strength after chemical strengthening and is resistant to devitrification. The present invention relates to a glass for chemical strengthening that contains, expressed as mol% on an oxide basis, 55 to 70% SiO2, 10 to 25% Al2O3, 1 to 20% Li2O, 0 to 8% CaO, 0 to 8% SrO, and 0 to 5% ZrO2, in which the sum of the contents of CaO and SrO is 1.5 to 10%, the sum of the contents of Na2O and K2O is 3 to 11%, and the value X given by the formula ([Li2O]+[K2O])/[Al2O3] is 0.1 to 1.1.

公开(公告)号：US20200207660A1

公开(公告)日：2020-07-02

申请号：US16747593

申请日：2020-01-21

Applicant: AGC Inc.

Inventor： Qing LI ,  Kenji IMAKITA ,  Akio KOIKE ,  Eriko MAEDA

IPC: C03C21/00 ,  C03B32/02 ,  C03C4/00 ,  C03C4/18 ,  C03C10/00

Abstract: The purpose of the present invention is to provide a chemically strengthened glass having excellent transparency and strength and being scratch resistant. The present invention pertains to a chemically strengthened glass that: has a compressive stress layer on the surface thereof; has a visible light transmittance of at least 70% when the thickness thereof is converted to 0.8 mm; has a surface compressive stress of at least 600 MPa; has a compressive stress depth of at least 80 μm; and contains a β-spodumene.

公开(公告)号：US20210347682A1

公开(公告)日：2021-11-11

申请号：US17443202

申请日：2021-07-22

Applicant: AGC Inc.

Inventor： Qing LI ,  Yusuke ARAI ,  Akio KOIKE ,  Kazutaka ONO ,  Hitomi FURUTA ,  Shigeki SAWAMURA

IPC: C03C10/00 ,  C03C4/18 ,  H01L23/15 ,  C03C21/00

Abstract: The present invention relates to a glass ceramic having a visible-light transmittance of 85% or more in terms of a thickness of 0.7 mm, and a haze value of 1.0% or less in terms of a thickness of 0.7 mm, and including, in mass % on an oxide basis: 45-70% of SiO2; 1-15% of Al2O3; and 10-25% of Li2O.

公开(公告)号：US20200369560A1

公开(公告)日：2020-11-26

申请号：US16991301

申请日：2020-08-12

Applicant: AGC Inc.

Inventor： Yosuke TAKEDA ,  Akio KOIKE ,  Toru IKEDA ,  Yasunari SAITO ,  Makoto FUKAWA ,  Takaaki MURAKAMI

IPC: C03C4/18 ,  C03C21/00 ,  C03C17/42 ,  C03C3/097 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091

Abstract: A cover glass includes a chemically strengthened glass including a first main surface having an area of 12,000 mm2 or larger and a second main surface, and an anti-fingerprint treated layer provided on or above the first main surface. The chemically strengthened glass has a depth of compressive stress layer DOL of 20 μm or larger, has a tensile stress layer having a P2O5 content of 2 mol % or less, and has A×B of 135 or larger, provided that, among oxide components constituting the tensile stress layer, a total concentration of Li2, Na2O, and K2O is A mol % and a concentration of Al2O3 is B mol %. The anti-fingerprint treated layer includes a surface having a frictional electrification amount, as determined by Method D described in JIS L1094:2014, of 0 kV or less and −1.5 kV or more.

公开(公告)号：US20200346969A1

公开(公告)日：2020-11-05

申请号：US16936533

申请日：2020-07-23

Applicant: AGC Inc.

Inventor： Qing LI ,  Kenji IMAKITA ,  Akio KOIKE ,  Eriko MAEDA

IPC: C03C10/00 ,  C03C4/00 ,  C03C21/00 ,  C03B32/02 ,  C03B23/025

Abstract: The present invention provides crystallized glass of three-dimensional shape for easily producing chemically strengthened glass of three-dimensional shape that resists damage and has exceptional transparency. This crystallized glass of three-dimensional shape: contains crystals; has light transmittance in terms of a thickness of 0.8 mm of 80% or higher; and contains 45-74% SiO2, 1-30% Al2O3, 1-25% Li2O, 0-10% Na2O, 0-5% K2O, a total of 0-15% of SnO2 and/or ZrO2, and 0-12% P2O5, these amounts expressing the oxide-based mass percentage.