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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
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.
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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
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.
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3.发明公开公开(公告)号：US20230406763A1
公开(公告)日：2023-12-21
申请号：US18461121
申请日：2023-09-05
Applicant: AGC Inc.
Inventor： Takumi UMADA , Qing LI , Shunji WACHI
CPC classification number: C03C21/002 , C03C23/0075 , C03C10/0027 , C03C3/097
Abstract: The present invention relates to a chemically-strengthened glass having a first main surface and a second main surface, including a glass ceramic including a crystal and a residual glass, having a surface compressive stress value (CS0) of 450 MPa or more, and a compressive stress value (CS50) at a depth of 50 μm of 150 MPa or more, having a plurality of non-through holes having a diameter average value of 5 nm to 50 nm on the first main surface and the second main surface, the non-through holes having a depth average value measured by a cross-sectional SEM image of the first main surface and the second main surface of 5 nm to 50 nm, and having a total area ratio to a total visual field area of a surface SEM image of the first main surface and the second main surface of 1% to 40%.
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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20230021473A1
公开(公告)日：2023-01-26
申请号：US17934294
申请日：2022-09-22
Applicant: AGC Inc.
Inventor： Takumi UMADA , Kenji IMAKITA , Shusaku AKIBA , Yusaku MATSUO
Abstract: The present invention relates to a glass including, in terms of mole percentage based on oxides: SiO2 in an amount of 45% to 65%; Al2O3 in an amount of 18% to 30%; Li2O in an amount of 7% to 15%; one or more selected from Y2O3 and La2O3 in a total amount of 0% to 10%; P2O5 in an amount of 0% to 10%; B2O3 in an amount of 0% to 10%; and ZrO2 in an amount of 0% to 4%, and satisfying the following expression: [Al2O3]—[R2O]—[RO]—[P2O5]>0, provided that, in terms of mole percentage based on oxides, a content of Al2O3 is defined as [Al2O3], a content of P2O5 is defined as [P2O5], a total content of alkali metal oxides is defined as [R2O], and a total content of alkali earth metal oxides is defined as [RO].
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公开(公告)号：US20220119306A1
公开(公告)日：2022-04-21
申请号：US17561493
申请日：2021-12-23
Applicant: AGC Inc.
Inventor： Shusaku AKIBA , Takumi UMADA
Abstract: The present invention relates to a chemically strengthened glass having a first main surface, and satisfying the following (1a) to (4a): (1a) in a thickness range of [depth where a compressive stress value is 0]±10 μm, a stress curve has a gradient of −15 MPa/μm to −3 MPa/μm and an Na concentration curve has a gradient of 0.02/μm to 0.12/μm in terms of absolute value; (2a) the Na concentration curve, in a sheet-thickness-direction range lying between the first main surface and the depth where the compressive stress value is 0, has a monotonously decreasing gradient; (3a) the chemically strengthened glass has a thickness of 1 mm or less; and (4a) the chemically strengthened glass includes Li2O in an amount of 10 mol % or more in mole percentage on an oxide basis.
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公开(公告)号：US20250026676A1
公开(公告)日：2025-01-23
申请号：US18903754
申请日：2024-10-01
Applicant: AGC Inc.
Inventor： Takumi UMADA , Kenji IMAKITA , Yusuke ARAI , Qing LI
Abstract: 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 5 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.
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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
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.
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公开(公告)号：US20210323862A1
公开(公告)日：2021-10-21
申请号：US17305169
申请日：2021-07-01
Applicant: AGC Inc.
Inventor： Kazuki KANEHARA , Eriko MAEDA , Takumi UMADA , Kenji IMAKITA
Abstract: The present invention relates to a chemically strengthened glass having a sheet shape, having a compressive stress layer on a glass surface, having a compressive stress value on the glass surface of 800 MPa or more, having a sheet thickness (t) of 100 μm or more, having a depth of the compressive stress layer (DOL) of (t×0.1) μm or more, and satisfying: CSB>CSA>0, where DB is a depth in a range of 10 μm or more and not more than DOL from the glass surface, at which a compressive stress value is maximum; CSB is the compressive stress value at the depth DB; DΛ is a depth in a range of equal to or less than DB from the glass surface, at which a compressive stress value is minimum; and CSA is the compressive stress value at the depth DA.
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