公开(公告)号：US20230159370A1

公开(公告)日：2023-05-25

申请号：US18159158

申请日：2023-01-25

Applicant: AGC Inc.

Inventor： Takumi UMADA ,  Hitomi FURUTA ,  Shusaku AKIBA

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

CPC classification number: C03B32/02 ,  C03C21/002 ,  C03C10/0027 ,  C03C2204/00

Abstract: The present invention relates to a chemically strengthened glass ceramic including a crystalline phase, having two main surfaces opposed to each other, and including an amorphized region in a surface layer of at least one of the main surfaces and a crystallized region inside the glass, in which the amorphized region has a crystallinity of 10 vol % or less at a depth of 100 nm from an outermost surface of the glass.

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：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：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：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：US20230365456A1

公开(公告)日：2023-11-16

申请号：US18355545

申请日：2023-07-20

Applicant: AGC INC.

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

IPC: C03C10/00

CPC classification number: C03C10/0009 ,  C03C10/0054

Abstract: The present invention is a glass ceramic including a crystal and a residual glass, in which the residual glass has a Young's modulus parameter ER of 75 or more, the Young's modulus parameter ER being calculated based on the following formula: ER=62.2×[SiO2]+134.9×[Al2O3]+121.7×[B2O3]+33.0×[P2O5]+72.6×[MgO]+121.5×[CaO]+43.7×[SrO]+38.6×[BaO]+84.0×[Li2O]+26.2×[Na2O]+17.8×[K2O]+156.8×[ZrO2]+154.3×[TiO2]+74.7×[La2O3]+80.3×[Y2O3]+54.3×[ZnO].

公开(公告)号：US20230202901A1

公开(公告)日：2023-06-29

申请号：US18171509

申请日：2023-02-20

Applicant: AGC Inc.

Inventor： Hiroshi KOMATSU ,  Takanori FUKUSHI ,  Satoshi KANASUGI ,  Hitomi FURUTA ,  Shiro FUNATSU

IPC: C03B23/03 ,  C03C10/00 ,  C03C21/00

CPC classification number: C03B23/03 ,  C03C10/00 ,  C03C21/002 ,  C03C2204/00 ,  C03B32/02

Abstract: The present invention relates to a glass in which: the glass is a crystallized glass; the glass has a difference log η−log η0 (dPa·s) between a logarithm log η (dPa·s) of bulk viscosity η (dPa·s) and a logarithm log η0 (dPa·s) of local viscosity η0 (dPa·s) of larger than 0 and 1.8 or smaller, in a temperature range in which the logarithm log η0 (dPa·s) of the bulk viscosity η (dPa·s) is 11.4 or larger and 12.7 or smaller.