公开(公告)号：US20220002189A1

公开(公告)日：2022-01-06

申请号：US17448570

申请日：2021-09-23

Applicant: AGC Inc.

Inventor： Hitomi FURUTA ,  Takanori FUKUSHI ,  Qing LI ,  Yusuke ARAI

IPC: C03C10/00

Abstract: The present invention relates to a glass ceramic having a three-dimensional shape including plural R-shapes including a smallest R-shape whose average radius of curvature is 5.0×102 mm or less and a largest R-shape whose average radius of curvature is 1.0×103 mm or more, having a maximum value of retardations of 20 nm/mm or less, and having a haze value converted into a value corresponding to a thickness of 0.8 mm of 1.0% or less in the largest R-shape.

公开(公告)号：US20210371330A1

公开(公告)日：2021-12-02

申请号：US17445223

申请日：2021-08-17

Applicant: AGC Inc.

Inventor： Akihisa MINOWA ,  Hitoshi SAIKI ,  Shunji WACHI ,  Yusuke ARAI ,  Takahiro MASHIMO

IPC: C03C17/32 ,  C03C3/093 ,  C03C21/00 ,  C03C23/00 ,  C03C17/42

Abstract: An antifouling layer-attached glass substrate includes a glass substrate having a pair of main surfaces facing each other, and an antifouling layer formed on or above at least one main surface of the glass substrate. At the time of measuring an absorbance inside the antifouling layer-attached glass substrate by a Fourier transform infrared spectrophotometer according to ATR method (Attenuated Total Reflection) from a surface on a side where the antifouling layer is formed, in the case where an absorbance value at 3,955 cm−1 is set to 0.10, a value (H2O absorbance) obtained by subtracting, as a base, the absorbance value at 3,955 cm−1 from a peak value of an absorbance peak which appears around 3,400 cm−1 is 0.010 or more.

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

IPC: C03C3/083 ,  C03C10/00

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.

公开(公告)号：US20220411275A1

公开(公告)日：2022-12-29

申请号：US17891320

申请日：2022-08-19

Applicant: AGC Inc. ,  AGC SI-TECH CO., LTD.

Inventor： Toshiya MATSUBARA ,  Hyunji KIM ,  Hajime KATAYAMA ,  Yusuke ARAI

IPC: C01B33/18

Abstract: The present invention related to a hollow silica particle including: a shell layer containing silica; and a space formed inside the shell layer, in which the hollow silica particle has a particle density as measured by a dry pycnometer density measurement using helium gas of 2.00 g/cm3 or more and a particle density as measured by a dry pycnometer density measurement using oxygen gas of lower than 2.00 g/cm3.

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.

公开(公告)号：US20240270626A1

公开(公告)日：2024-08-15

申请号：US18644271

申请日：2024-04-24

Applicant: AGC Inc.

Inventor： Qing LI ,  Yusuke ARAI ,  Akio KOIKE ,  Kazutaka ONO ,  Hitomi FURUTA ,  Shigeki SAWAMURA

IPC: C03C10/00 ,  C03C4/18 ,  C03C21/00 ,  H01L23/15

CPC classification number: C03C10/0027 ,  C03C4/18 ,  C03C21/002 ,  H01L23/15 ,  C03C2204/00

Abstract: A glass sheet, containing, in mass % on an oxide basis: 45-70% of SiO2, 1-15% of Al2O3, 10-25% of Li2O, 0-10% of Na2O, 0-5% of K2O, and 0-15% of ZrO2. K2O/R2O is 0.10 or less and ZrO2/R2O is 0.30 or more, where R2O is a total content of Li2O, Na2O, and K2O. The glass sheet has an average thermal expansion coefficient at 50° C.-350° C. of 90×10−7/° C.-140×10−7/° C. and a Young's modulus of 85 GPa or more.

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

IPC: C03C3/083 ,  C03C10/00

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.

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

IPC: C03C21/00 ,  C03C4/18 ,  C03C10/00

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.

公开(公告)号：US20210292226A1

公开(公告)日：2021-09-23

申请号：US17341462

申请日：2021-06-08

Applicant: AGC Inc.

Inventor： Takumi UMADA ,  Kenji IMAKITA ,  Yusuke ARAI ,  Tatsuya MIYAJIMA

IPC: C03C3/097 ,  C03C21/00 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091 ,  C03C3/095 ,  C03C4/18 ,  H05K5/03

Abstract: The present invention relates to a glass having a fracture toughness value of 0.85 MPa·m1/2 or more, and including, as represented by molar percentage based on oxides, 40% or more of SiO2, 20% or more of Al2O3, 5% or more of Li2O, and from 1 to 6% in total of one or more selected from Y2O3, La2O3 and Ga2O3. The present invention relates to a glass including, as represented by molar percentage based on oxides, from 40 to 60% of SiO2, from 20 to 45% of Al2O3, and from 5 to 15% of Li2O. Denoting the content of SiO2 as [SiO2] and the content of Al2O3 as [Al2O3], (2×[Al2O3]-X)/[SiO2] is 0 or more and 1 or less.