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：US20240002282A1

公开(公告)日：2024-01-04

申请号：US18468969

申请日：2023-09-18

Applicant: AGC Inc.

Inventor： Takumi UMADA ,  Qing LI ,  Yusuke FUJIWARA ,  Yusuke KATAOKA

IPC: C03C10/00 ,  C03C21/00

CPC classification number: C03C10/0027 ,  C03C21/002

Abstract: The present invention relates to a chemically strengthened glass having a thickness of t [μm] and including Li2O, K2O, and Na2O, in which a minimum depth z at which Kx is (Kt/2+0.1) [%] or more is 0.5 μm to 5 μm, provided that Kx [%] is a concentration of K2O at a depth of x [μm] from a surface of the chemically strengthened glass and Kt/2 [%] is a content of K2O before chemical strengthening, in terms of mole percentage based on oxides.

公开(公告)号：US20230271878A1

公开(公告)日：2023-08-31

申请号：US18172432

申请日：2023-02-22

Applicant: AGC Inc.

Inventor： Satoshi OGAMI ,  Yusuke KATAOKA ,  Yusuke FUJIWARA

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, satisfying in comparison of an estimated stress profile with an effective stress profile, an absolute value of a difference between tensile stress values at a center in a thickness direction is 30 MPa or smaller, and a value obtained by subtracting, at a depth of 15 μm from a chemically strengthened surface of the glass, a compressive stress value of the effective stress profile from a compressive stress value of the estimated stress profile is 50 MPa or larger.

公开(公告)号：US20220281769A1

公开(公告)日：2022-09-08

申请号：US17652543

申请日：2022-02-25

Applicant: AGC INC.

Inventor： Kaname SEKIYA ,  Yusuke FUJIWARA

IPC: C03C21/00 ,  C03C3/083 ,  C03C4/18

Abstract: The present invention relates to a chemically strengthened glass having a thickness t (mm), in which a first-order derivative CSx′ of a stress value CSx (MPa) is −4.7 or larger in a range of CSx≥0 in a profile of the stress value CSx (MPa), in which the stress value CSx (MPa) is a function of depth×(μm) from a glass surface, and in which the stress value CSx (MPa) is measured by a scattered light photoelastic stress meter, and a manufacturing method thereof.

公开(公告)号：US20220033299A1

公开(公告)日：2022-02-03

申请号：US17388494

申请日：2021-07-29

Applicant: AGC Inc.

Inventor： Kaname SEKIYA ,  Yusuke FUJIWARA

IPC: C03C21/00 ,  C03C4/18 ,  C03C3/083

Abstract: The present invention relates to a chemically strengthened glass having a thickness of t [mm], and having a profile of a stress value CSx [MPa] at a depth x [μm] from a surface of the glass, the stress value being measured by a scattered-light photoelastic stress meter, in which a second-order differential value CSx″ of the stress value CSx in the profile satisfies the following expression within a range of CSx≥0: 0