公开(公告)号：US20240227117A1

公开(公告)日：2024-07-11

申请号：US18616813

申请日：2024-03-26

Applicant: AGC Inc.

Inventor： Toru MOMOSE ,  Osamu SATO ,  Hirofumi YAMAMOTO ,  Nobuhiko TAKESHITA

IPC: B24B37/08 ,  B24B37/28

CPC classification number: B24B37/08 ,  B24B37/28

Abstract: A method of producing a glass article includes holding a carrier having a circular shape, in which a glass substrate having a circular shape is retained, with an upper surface plate and a lower surface plate; and polishing the glass substrate by rotating the carrier with respect to the upper surface plate and the lower surface plate, to obtain the glass article. The glass substrate is disposed in the carrier such that, in a top plan view, a center of the carrier is included in a region of the glass substrate, and a center of the glass substrate is shifted from the center of the carrier.

公开(公告)号：US20190055160A1

公开(公告)日：2019-02-21

申请号：US16168975

申请日：2018-10-24

Applicant: AGC Inc.

Inventor： Takashi NAGATA ,  Hirofumi YAMAMOTO

IPC: C03C17/34 ,  G02B1/115

Abstract: There is provided a glass article using an ultraviolet absorbing glass substrate, the glass article suppressing solarization and exhibiting a high visible light transmittance. A glass article, comprising a glass substrate absorbing light at a wavelength of 250 to 400 nm from the surface and an antireflection film provided on at least one surface of the glass substrate, wherein the glass article has an ultraviolet irradiation degradation degree (X) of 1.5% or less, wherein the ultraviolet irradiation degradation degree (X) is T0−T1, where T0 is an average transmittance of light at the wavelength of 250 to 400 nm from a surface of the antireflection film in an initial state, and T1 is an average transmittance of light at the wavelength of 250 to 400 nm from the surface of the antireflection film after irradiating the surface of the antireflection film with ultraviolet rays for one hour.

公开(公告)号：US20240098891A1

公开(公告)日：2024-03-21

申请号：US18520642

申请日：2023-11-28

Applicant: AGC Inc.

Inventor： Takeyuki KATO ,  Yutaka KUROIWA ,  Nobuo INUZUKA ,  Hirofumi YAMAMOTO

IPC: H05K1/03 ,  H05K1/02

CPC classification number: H05K1/0306 ,  H05K1/0243 ,  H05K1/0251 ,  H01L23/15

Abstract: The present invention relates to a circuit board for a high-frequency device, including: a glass substrate in which a crystal is precipitated and cuttable by etching, and which has a dielectric loss tangent at 20° C. and 10 GHz of 0.0090 or less, and relates to a high-frequency device including the circuit board.

公开(公告)号：US20210147279A1

公开(公告)日：2021-05-20

申请号：US17093121

申请日：2020-11-09

Applicant: AGC Inc.

Inventor： Yusuke KOBAYASHI ,  Izuru KASHIMA ,  Kazutaka ONO ,  Seiji INABA ,  Hirofumi YAMAMOTO ,  Kiyoshi TAMAI

IPC: C03C3/087 ,  C03C4/18 ,  C03C21/00 ,  B32B17/10

Abstract: A supporting glass substrate includes a compression stress layer on a surface thereof, and has an average thermal expansion coefficient at 50° C. to 200° C. that is 7 ppm/° C. to 15 ppm/° C., an internal tensile stress that is 5 MPa to 55 MPa, and a depth of the compression stress layer that is 10 μm to 60 μm.

公开(公告)号：US20240101467A1

公开(公告)日：2024-03-28

申请号：US18520651

申请日：2023-11-28

Applicant: AGC Inc.

Inventor： Takeyuki KATO ,  Yutaka KUROIWA ,  Nobuo INUZUKA ,  Hirofumi YAMAMOTO

IPC: C03C4/04 ,  C03B32/02 ,  C03C3/095 ,  C03C15/00 ,  H05K1/02 ,  H05K1/03

CPC classification number: C03C4/04 ,  C03B32/02 ,  C03C3/095 ,  C03C15/00 ,  H05K1/0237 ,  H05K1/0306 ,  C03C2204/00

Abstract: The present invention relates to a photosensitive glass in which a Li2SiO3 crystal is precipitated by exposure and heat treatment, in which the photosensitive glass has a value of Formula (A) described below of 0.50 or more and 0.75 or less, and the photosensitive glass has a dielectric loss tangent at 20° C. and 10 GHz of 0.0090 or less, [Li2O]/([Li2O]+[Na2O]+[K2O]) Formula (A), in Formula (A), [Li2O], [Na2O], and [K2O] respectively indicate contents of Li2O, Na2O, and K2O in the photosensitive glass in terms of mole percentage based on oxides.

公开(公告)号：US20230051824A1

公开(公告)日：2023-02-16

申请号：US17969012

申请日：2022-10-19

Applicant: AGC Inc.

Inventor： Toru MOMOSE ,  Osamu SATO ,  Hirofumi YAMAMOTO ,  Nobuhiko TAKESHITA

IPC: B24B37/08 ,  B24B37/28

Abstract: A method of producing a glass article includes holding a carrier having a circular shape, in which a glass substrate having a circular shape is retained, with an upper surface plate and a lower surface plate; and polishing the glass substrate by rotating the carrier with respect to the upper surface plate and the lower surface plate, to obtain the glass article. The glass substrate is disposed in the carrier such that, in a top plan view, a center of the carrier is included in a region of the glass substrate, and a center of the glass substrate is shifted from the center of the carrier.

公开(公告)号：US20200279756A1

公开(公告)日：2020-09-03

申请号：US16880286

申请日：2020-05-21

Applicant: AGC Inc.

Inventor： Hirofumi YAMAMOTO ,  Yasuhiko AKAO ,  Teruo FUJIWARA ,  Nobuhiko IMAJO

IPC: H01L21/56 ,  C23C14/34 ,  C23C14/06 ,  C23C14/08 ,  C23C14/00 ,  C03C17/22 ,  C03C3/087

Abstract: A laminate including a glass plate and a coating layer, wherein the coating layer includes one or more components selected from the group consisting of silicon nitride, titanium oxide, alumina, niobium oxide, zirconia, indium tin oxide, silicon oxide, magnesium fluoride, and calcium fluoride, wherein a ratio (dc/dg) of a thickness dc of the coating layer to a thickness dg of the glass plate is in a range of 0.05×10−3 to 1.2×10−3, and wherein a radius of curvature r1 of the laminate with negating of self-weight deflection is 10 m to 150 m.

公开(公告)号：US20230187227A1

公开(公告)日：2023-06-15

申请号：US18104681

申请日：2023-02-01

Applicant: AGC Inc.

Inventor： Hirofumi YAMAMOTO ,  Yasuhiko AKAO ,  Teruo FUJIWARA ,  Nobuhiko IMAJO

IPC: H01L21/56 ,  C03C3/087 ,  C03C17/22 ,  C23C14/00 ,  C23C14/06 ,  C23C14/08 ,  C23C14/34

CPC classification number: H01L21/568 ,  C03C3/087 ,  C03C17/225 ,  C23C14/0036 ,  C23C14/0652 ,  C23C14/083 ,  C23C14/3407 ,  H01L21/561 ,  H01L21/566 ,  C03C2218/155

Abstract: A laminate including a glass plate and a coating layer, wherein the coating layer includes one or more components selected from the group consisting of silicon nitride, titanium oxide, alumina, niobium oxide, zirconia, indium tin oxide, silicon oxide, magnesium fluoride, and calcium fluoride, wherein a ratio (dc/dg) of a thickness dc of the coating layer to a thickness dg of the glass plate is in a range of 0.05×10−3 to 1.2×10−3, and wherein a radius of curvature r1 of the laminate with negating of self-weight deflection is 10 m to 150 m.