公开(公告)号：US20240383801A1

公开(公告)日：2024-11-21

申请号：US18659387

申请日：2024-05-09

Applicant: AGC Inc.

Inventor： Yusuke KATAOKA ,  Yusuke FUJIWARA

IPC: C03C21/00

Abstract: A chemically strengthened glass having a thickness t [mm], in which a compressive stress layer depth DOC [μm] is 160t [μm] or more, and a value CS90/ICT [μm−1] obtained by dividing CS90 [MPa] which is a compressive stress value at a depth of 90 μm from a surface of the chemically strengthened glass by a tensile stress integrated value ICT [MPa·μm] is 0.0012 μm−1 or more.

公开(公告)号：US20230365463A1

公开(公告)日：2023-11-16

申请号：US18315592

申请日：2023-05-11

Applicant: AGC Inc.

Inventor： Kaname SEKIYA ,  Yusuke FUJIWARA ,  Akio SHIZUKAI ,  Seikichi TEI ,  Takashi ETO

IPC: C03C21/00 ,  B24B7/24

CPC classification number: C03C21/002 ,  B24B7/241

Abstract: The present invention relates to a method for producing a chemically strengthened glass substrate, the method including the following steps (A) to (C): (A) preparing a chemically strengthened glass substrate A having a main surface and an end surface; (B) obtaining a glass substrate by polishing a surface of the chemically strengthened glass substrate A; and (C) performing ion exchange by bringing the glass substrate into contact with an inorganic salt composition including 90% by mass or more of KNO3 and 1.0% by mass or more and 6.0% by mass or less of NaNO3 to obtain a chemically strengthened glass substrate C.

公开(公告)号：US20230060972A1

公开(公告)日：2023-03-02

申请号：US18045935

申请日：2022-10-12

Applicant: AGC Inc.

Inventor： Takumi UMADA ,  Yusuke FUJIWARA ,  Shusaku AKIBA

IPC: C03C21/00 ,  C03C10/00

Abstract: The present invention relates to a chemically strengthened glass article including: a first surface; a second surface facing the first surface; and an end portion in contact with the first surface and the second surface, in which the first surface has a compressive stress value of 400 MPa to 1000 MPa, in which, when a compressive stress value of an inside of the glass is expressed with a depth from the first surface as a variable, a depth m [μm] at which the compressive stress value is maximum is larger than 0 μm, and a value of CSm−CS0 [MPa] is 30 MPa or more, and in which a depth DOL at which the compressive stress value is 0 is 50 μm to 150 μm.

公开(公告)号：US20220306528A1

公开(公告)日：2022-09-29

申请号：US17656470

申请日：2022-03-25

Applicant: AGC INC.

Inventor： Yuji IMOTO ,  Yusuke FUJIWARA

IPC: C03C21/00 ,  C03C15/00

Abstract: The present invention relates to a chemically strengthened glass including alkali metal ions, having a thickness of 0.20 mm or smaller, and having a pair of major surfaces that are opposed to each other and have been subjected to a chemically strengthening treatment, in which at least one of the pair of major surfaces has a core roughness depth Sk of 0.90 nm or smaller and a mean summit curvature Ssc of 13.0×10−4/nm or smaller.

公开(公告)号：US20220185112A1

公开(公告)日：2022-06-16

申请号：US17652968

申请日：2022-03-01

Applicant: AGC Inc.

Inventor： Izuru KASHIMA ,  Yusuke FUJIWARA ,  Hitoshi MISHIRO

IPC: B60K35/00 ,  C03C3/083

Abstract: A glass substrate unit includes a glass substrate and a glass deformation device for deforming the glass substrate. The glass substrate includes a thin portion and a thick portion, the thin portion having a first main surface and a second main surface opposite to the first main surface, the thick portion having a first main surface and a second main surface opposite to the first main surface and having a sheet thickness larger than a sheet thickness of the thin portion. The glass deformation device deforms the glass substrate by moving one of the thin portion and the thick portion.

公开(公告)号：US20220004230A1

公开(公告)日：2022-01-06

申请号：US17476956

申请日：2021-09-16

Applicant: AGC INC.

Inventor： Izuru KASHIMA ,  Yusuke FUJIWARA

IPC: G06F1/16

Abstract: The present invention relates to a chemically strengthened glass including a first principal surface and a second principal surface which is on an opposite side of the first principal surface, and having a thickness of 0.30 mm or less, in which the chemically strengthened glass has a bent shape in which the first principal surface is a protrudent surface and the second principal surface is a recessed surface, and in which when the chemically strengthened glass is placed on a horizontal surface with the first principal surface facing downward, and no external force other than gravity acts on the chemically strengthened glass, part of the first principal surface is not in contact with the horizontal surface.

公开(公告)号：US20240360032A1

公开(公告)日：2024-10-31

申请号：US18768142

申请日：2024-07-10

Applicant: AGC Inc.

Inventor： Yusuke FUJIWARA ,  Yoichi TAKATO ,  Yusuke KOBAYASHI ,  Masao OZEKI ,  Yusuke MORISHIMA ,  Takumi NAGASAKO

IPC: C03C21/00 ,  C03C3/076 ,  H01L31/048

CPC classification number: C03C21/002 ,  C03C3/076 ,  H01L31/0481 ,  C03C2204/00

Abstract: A chemically strengthened glass has a thickness of more than 2 mm, a surface compressive stress CS0 of 400 MPa to 1200 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 20 MPa/μm to 500 MPa/μm, and a tensile stress CT of 1.0 MPa to 16 MPa.

公开(公告)号：US20240345432A1

公开(公告)日：2024-10-17

申请号：US18752898

申请日：2024-06-25

Applicant: AGC Inc.

Inventor： Yuji IMOTO ,  Yusuke FUJIWARA

IPC: G02F1/1333 ,  C03C15/00 ,  C03C23/00

CPC classification number: G02F1/133331 ,  C03C15/00 ,  C03C23/0025 ,  G02F2201/50

Abstract: The present invention pertains to a glass having a first main surface and a second main surface opposite to the first main surface. The glass has a thick region and a thin region that is adjacent to the thick region, has a recessed surface in the second main surface, and is thinner than the thick region. The thin region includes: a bottom region which is flat on the second main surface side in a state where the first main surface is fixed so as to make contact with a flat surface; and a stepped region provided between the bottom region and the thick region. The thin region satisfies a specific formula (1).

公开(公告)号：US20230278915A1

公开(公告)日：2023-09-07

申请号：US18178583

申请日：2023-03-06

Applicant: AGC Inc.

Inventor： Yusuke FUJIWARA ,  Akio SHIZUKAI

IPC: C03C21/00 ,  C03C3/087

CPC classification number: C03C21/002 ,  C03C3/087

Abstract: The present invention relates to a chemically strengthened glass, having a slope of a K2O concentration of −1.9%/μm or more at a depth of 1 to 3 μm and −0.001%/μm or less at a depth of 5 to 10 μm, in a K2O concentration profile having an abscissa representing the depth (μm) from a surface of the glass and an ordinate representing the K2O concentration (%) by mole percentage in terms of oxides.

公开(公告)号：US20220127191A1

公开(公告)日：2022-04-28

申请号：US17646793

申请日：2022-01-03

Applicant: AGC Inc.

Inventor： Izuru KASHIMA ,  Yusuke FUJIWARA

IPC: C03C27/06 ,  C03B23/023 ,  B32B7/08 ,  B32B3/26 ,  B32B17/06

Abstract: A glass substrate includes a thin portion having a first surface and a second surface opposed to the first surface, a thick portion having a first surface and a second surface opposed to the first surface and having a sheet thickness t3 that is larger than a sheet thickness t2 of the thin portion, a connection portion having a first connection surface and a second connection surface, the first connection surface connecting the first surface of the thin portion to the first surface of the thick portion, the second connection surface connecting the second surface of the thin portion to the second surface of the thick portion. The first connection surface has a curvature radius of more than or equal to 400 μm.