公开(公告)号：US20220002183A1

公开(公告)日：2022-01-06

申请号：US17480440

申请日：2021-09-21

Applicant: AGC INC.

Inventor： Yu HANAWA ,  Kazutaka ONO ,  Shigeki SAWAMURA

IPC: C03C3/087 ,  B32B7/06 ,  H01L21/683 ,  B32B17/06 ,  H01L21/78

Abstract: A glass substrate contains, as a glass matrix composition as represented by mole percentage based on oxides, SiO2: 58-75%, Al2O3: 4.5-16%, B2O3: 0-6%, MgO: 0-6%, CaO: 0-6%, SrO: 5-20%, BaO: 5-20%, and MgO+CaO+SrO+BaO:15-40%. The glass substrate has an alkali metal oxide content of 0-0.1% as represented by mole percentage based on oxides. The glass substrate has an average coefficient of thermal expansion α of 56-90 (×10−7/° C.) at 50° C.-350° C.

公开(公告)号：US20190210327A1

公开(公告)日：2019-07-11

申请号：US16355613

申请日：2019-03-15

Applicant: AGC INC.

Inventor： Shigeki SAWAMURA ,  Kazutaka ONO

IPC: B32B17/10 ,  C03C3/087 ,  C03C3/091

CPC classification number: B32B17/10036 ,  B32B17/06 ,  B32B17/101 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091 ,  C03C17/06 ,  H01L23/15

Abstract: A first aspect of the present invention relates to a glass substrate having a content of alkali metal oxides, as represented by molar percentage based on oxides, of 0 to 0.1%, a devitrification-temperature viscosity of 103.2 dPa·s or higher, and an average coefficient of thermal expansion α at 30 to 220° C. of 7.80 to 9.00 (ppm/° C.). A second aspect of the present invention relates to a glass substrate which is to be used for a support substrate for semiconductor packages, the glass substrate having a content of alkali metal oxides, as represented by molar percentage based on oxides, of 0 to 0.1% and a photoelastic constant of 10 to 26 nm/cm/MPa.

公开(公告)号：US20250110340A1

公开(公告)日：2025-04-03

申请号：US18981323

申请日：2024-12-13

Applicant: AGC Inc.

Inventor： Shigeki SAWAMURA ,  Naoki Kanno

IPC: G02B27/01

Abstract: A circular glass substrate including first and second main surfaces opposite each other, an edge portion between the first and second main surfaces, and a notch at a part of the edge portion. The glass substrate has a specific gravity of 3.00 or more; a radius r of 75 mm or more; a refractive index nd of 1.800 or more; and a ratio (Tf/Tg) of a fictive temperature Tf (° C.) to a glass transition temperature Tg (° C.) of less than 1.00. In a relationship of an internal transmittance to a wavelength, when converted for a thickness of 10 mm, a shortest wavelength λ70 at which the internal transmittance becomes 70% is 425 nm or less; and a ratio (g/r) of deviation g (mm), of a center of mass (G) relative to a center (P), to the radius r, in a top view, is in a range of 0.05% to 1.2%.

公开(公告)号：US20240336515A1

公开(公告)日：2024-10-10

申请号：US18746553

申请日：2024-06-18

Applicant: AGC Inc.

Inventor： Naoki KANNO ,  Shigeki SAWAMURA

IPC: C03C3/21

CPC classification number: C03C3/21

Abstract: Provided is glass having a high refractive index and capable of suppressing the risk of breakage. In glass (10), in mole percentage on an oxide basis, a content of TeO2 is more than 10.1% and less than 40.0%, a parameter A defined by Formula (1) is 65 or more, and a total content of P2O5, TeO2, B2O3, TiO2, Ta2O5, WO3, ZrO2, Bi2O3, and ZnO is 90% or more.

公开(公告)号：US20240278540A1

公开(公告)日：2024-08-22

申请号：US18647083

申请日：2024-04-26

Applicant: AGC Inc.

Inventor： Shigeki SAWAMURA ,  Takato KAJIHARA

IPC: B32B17/10 ,  B60J1/00 ,  C03C3/087 ,  C03C3/091

CPC classification number: B32B17/10119 ,  B32B17/10036 ,  B32B17/101 ,  B32B17/10449 ,  B32B17/10761 ,  B60J1/001 ,  C03C3/087 ,  C03C3/091 ,  B32B2307/536 ,  B32B2307/54 ,  B32B2307/558 ,  B32B2605/08

Abstract: A glass plate including a first surface and a second surface facing the first surface, in which, when Vickers indentation is performed with a force of 5 N on the first surface or the second surface, no cracks are generated or c/l

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公开(公告)号：US20230331622A1

公开(公告)日：2023-10-19

申请号：US18331239

申请日：2023-06-08

Applicant: AGC Inc.

Inventor： Rikiya KADO ,  Takato KAJIHARA ,  Shigeki SAWAMURA ,  Shusaku AKIBA ,  Yutaka KUROIWA

IPC: C03C3/091 ,  C03C4/16 ,  B32B17/10 ,  C03C23/00

CPC classification number: C03C3/091 ,  C03C4/16 ,  B32B17/10036 ,  C03C23/007 ,  B32B17/10091 ,  B32B17/10119 ,  B32B2250/03 ,  B32B2250/40 ,  B32B2307/204 ,  B32B2307/7376 ,  B32B2605/00 ,  B32B2307/304 ,  B32B2307/412

Abstract: A borosilicate glass includes, in terms of molar percentage based on oxides: 70.0%≤SiO2≤85.0%; 5.0%≤B2O3≤20.0%; 0.0%≤Al2O3≤3.0%; 0.0%≤Li2O≤5.0%; 0.0%≤Na2O≤5.0%; 0.0%≤K2O≤5.0%; 0.0%≤MgO≤5.0%; 0.0%≤CaO≤5.0%; 0.0%≤SrO≤5.0%; 0.0%≤BaO≤5.0%; and 0.06%≤Fe2O3≤1.0%, in which the borosilicate glass has a basicity of 0.485 or more, and [AlO3]/([SiO2]+[B2O3]) of 0.015 or less.

公开(公告)号：US20240417312A1

公开(公告)日：2024-12-19

申请号：US18820034

申请日：2024-08-29

Applicant: AGC Inc.

Inventor： Naoki KANNO ,  Shigeki SAWAMURA

IPC: C03C3/21 ,  C03C3/068 ,  C03C3/19

Abstract: Provided is a glass having a high refractive index and capable of suppressing a decrease in transmittance with respect to visible light. A glass (10) has a refractive index of 1.94 or more, an internal transmittance of 70% or more with respect to light having a wavelength of 440 nm at a plate thickness of 10 mm, and a degradation degree (ΔT) of 2.2% or less in an ultraviolet irradiation test.

公开(公告)号：US20240375490A1

公开(公告)日：2024-11-14

申请号：US18779802

申请日：2024-07-22

Applicant: AGC Inc.

Inventor： Takato KAJIHARA ,  Shigeki SAWAMURA ,  Shusaku AKIBA ,  Yutaka KUROIWA

IPC: B60J1/02 ,  B32B7/02 ,  B32B17/10 ,  B32B27/30 ,  B60J1/00 ,  C03C3/087 ,  C03C3/091 ,  C03C3/095 ,  C03C4/00

Abstract: The present invention pertains to a laminated glass for a vehicle, the laminated glass including a first glass sheet, a second glass sheet and an intermediate film sandwiched between the first glass sheet and the second glass sheet, in which: the total thickness of the first glass sheet, the second glass sheet and the intermediate film is 4.0 mm or more; the first glass sheet is formed of a borosilicate glass containing, in terms of oxide by molar percentage, 1.0% or more of B2O3; and when a radio wave (TM wave) with a frequency of 79 [GHz] is made incident at an incident angle of 60° to the first glass sheet, the transmission property S21 is −4.0 [dB] or more.

公开(公告)号：US20240116800A1

公开(公告)日：2024-04-11

申请号：US18543883

申请日：2023-12-18

Applicant: AGC Inc.

Inventor： Takato KAJIHARA ,  Shigeki SAWAMURA ,  Yutaka KUROIWA

IPC: C03C3/087 ,  B32B17/10 ,  C03C3/091

CPC classification number: C03C3/087 ,  B32B17/10036 ,  B32B17/10119 ,  B32B17/10761 ,  C03C3/091 ,  B60J1/00

Abstract: A glass plate includes, in terms of molar percentage based on oxides: 70%≤SiO2≤85%; 0.0%≤Al2O3≤10%; 0.0%≤B2O3≤15%; 1.5%≤MgO≤20%; 0.0%≤CaO≤20%; 0.0% 0 SrO≤5.0%; 0.0%≤BaO≤1.0%; 0.0% 0 ZnO≤5.0%; 1.0%≤Li2O≤11%; 0.0%≤Na2O≤10%; 0.0% K2O≤10%; 3.0%≤R2O 11%; 0.01% Fe2O3≤1.00%; and 2.0%≤RO≤20%, in which a temperature T2 at which a glass viscosity is 102 dPa·s is 1,650° C. or lower, a temperature T12 at which a glass viscosity is 1012 dPa·s is 730° C. or lower, a relative dielectric constant (Fr) at a frequency of 10 GHz is 6.5 or less, and a loss tangent (tan δ) at a frequency of 10 GHz is 0.0090 or less.

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.