公开(公告)号：US20220119307A1

公开(公告)日：2022-04-21

申请号：US17562240

申请日：2021-12-27

Applicant: AGC Inc.

Inventor： Takumi UMADA ,  Yusuke ARAI ,  Qing LI

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

Abstract: The present invention relates to a method of producing a chemically strengthened glass, the method including chemically strengthening a lithium aluminosilicate glass having a thickness of t [unit: μm], in which the lithium aluminosilicate glass has a fracture toughness value (K1c) of 0.80 MPa·m′12 or more, the chemical strengthening is chemical strengthening with a strengthening salt including sodium and having a potassium content of less than 5 mass %, and a chemically strengthened glass to be obtained has a surface compressive stress value (CS0) of 500-1,000 MPa and has a depth DOL [unit: μm] at which a compressive stress value is zero of 0.06 t to 0.2 t.

公开(公告)号：US20220073415A1

公开(公告)日：2022-03-10

申请号：US17521910

申请日：2021-11-09

Applicant: AGC Inc.

Inventor： Seiki OHARA ,  Qing LI ,  Shusaku AKIBA

IPC: C03C3/097 ,  C03C21/00

Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of β-spodumene crystals, petalite crystals, and eucryptite crystals.

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：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：US20230192540A1

公开(公告)日：2023-06-22

申请号：US18108535

申请日：2023-02-10

Applicant: AGC Inc.

Inventor： Hitomi FURUTA ,  Qing LI ,  Shigeki SAWAMURA ,  Shusaku AKIBA ,  Seiji INABA

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

CPC classification number: C03C21/002 ,  C03B32/02 ,  C03C10/0027

Abstract: The present invention relates to a chemically strengthened glass having a haze value in terms of a thickness of 0.7 mm of 0.5% or less, having a surface compressive stress value of 400 MPa or more, having a depth of a compressive stress layer of 70 μm or more, having an ST limit of 18000 MPa·μm to 30000 MPa·μm, and being a glass ceramic including at least one of a Li3PO4 crystal and a Li4SiO4 crystal, or including a solid solution crystal of Li3PO4 or Li4SiO4 or a solid solution of both Li3PO4 and Li4SiO4.

公开(公告)号：US20230192531A1

公开(公告)日：2023-06-22

申请号：US18110357

申请日：2023-02-15

Applicant: AGC Inc.

Inventor： Hitomi FURUTA ,  Qing LI ,  Shigeki SAWAMURA ,  Shusaku AKIBA

IPC: C03C3/097 ,  C03C21/00

CPC classification number: C03C3/097 ,  C03C21/002

Abstract: The present invention relates to a chemically strengthened glass having a sheet shape, in which a haze in terms of a thickness of 0.70 mm is 1.0% or less, and on at least one main surface of the glass, a ratio (Rku/Hv)×1000 of kurtosis Rku of surface unevenness to Vickers hardness Hv is 1 or more and 4.4 or less.

公开(公告)号：US20220411318A1

公开(公告)日：2022-12-29

申请号：US17896048

申请日：2022-08-25

Applicant: AGC Inc.

Inventor： Seiki OHARA ,  Qing LI ,  Shusaku AKIBA

IPC: C03C3/097 ,  C03C21/00

Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of β-spodumene crystals, petalite crystals, and eucryptite crystals.

公开(公告)号：US20220002189A1

公开(公告)日：2022-01-06

申请号：US17448570

申请日：2021-09-23

Applicant: AGC Inc.

Inventor： Hitomi FURUTA ,  Takanori FUKUSHI ,  Qing LI ,  Yusuke ARAI

IPC: C03C10/00

Abstract: The present invention relates to a glass ceramic having a three-dimensional shape including plural R-shapes including a smallest R-shape whose average radius of curvature is 5.0×102 mm or less and a largest R-shape whose average radius of curvature is 1.0×103 mm or more, having a maximum value of retardations of 20 nm/mm or less, and having a haze value converted into a value corresponding to a thickness of 0.8 mm of 1.0% or less in the largest R-shape.

公开(公告)号：US20210292225A1

公开(公告)日：2021-09-23

申请号：US17339088

申请日：2021-06-04

Applicant: AGC Inc.

Inventor： Takumi UMADA ,  Kenji IMAKITA ,  Yusuke ARAI ,  Qing LI

IPC: C03C3/083 ,  C03C10/00

Abstract: The present invention relates to a chemically strengthened glass sheet in which a value of SB/(SA×t) is 5.0 mm−1 or more, where SA (MPa·μm) is an integrated value of a compressive stress from a surface of the glass sheet to a depth of 10 μm, SB (MPa·μm) is an integrated value of a compressive stress from the depth of 10 μm to DOL which is a depth at which the compressive stress is zero, and t (mm) is a thickness of the glass sheet.

公开(公告)号：US20210053867A1

公开(公告)日：2021-02-25

申请号：US17024109

申请日：2020-09-17

Applicant: AGC Inc.

Inventor： Suguru MURAYAMA ,  Seiki OHARA ,  Qing LI ,  Shusaku AKIBA

IPC: C03C3/085 ,  C03C3/083 ,  C03C3/087 ,  C03C3/091 ,  C03C3/093 ,  C03C3/097 ,  C03C21/00 ,  C03C4/18

Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(−941)+Li2O×927+Na2O×47.5+K2O×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.