公开(公告)号：US20220144685A1

公开(公告)日：2022-05-12

申请号：US17585787

申请日：2022-01-27

Applicant: AGC Inc.

Inventor： Mikio NAGANO ,  Seiji INABA ,  Yasunari SAITO ,  Kiyoshi TAMAI ,  Kazutaka ONO ,  Yuha KOBAYASHI

IPC: C03C3/097 ,  C03C3/095 ,  C03C3/091 ,  C03C3/085 ,  C03C3/087 ,  H01L21/683

Abstract: Suppressing deflection and reducing weight are to be achieved. A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm3) that is 37.0 (GPa·cm3/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm3). The ratio calculation value is represented by the following expression: α=2·Σ{(Vi·Gi)/Mi·Xi}, where, in the expression, Vi is a filling parameter of a metal oxide contained in the supporting glass substrate, Gi is a dissociation energy of a metal oxide contained in the supporting glass substrate, Mi is a molecular weight of a metal oxide contained in the supporting glass substrate, and Xi is a molar ratio of a metal oxide contained in the supporting glass substrate.

公开(公告)号：US20210032155A1

公开(公告)日：2021-02-04

申请号：US16941631

申请日：2020-07-29

Applicant: AGC Inc.

Inventor： Seiji INABA ,  Yasunari SAITO ,  Kiyoshi TAMAI ,  Kazutaka ONO ,  Yuha KOBAYASHI

IPC: C03C3/087 ,  C03C3/085 ,  C03C3/097 ,  C03C3/095 ,  C03C3/091 ,  H01L23/15

Abstract: A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm3) that is 37.0 (GPa·cm3/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm3). The ratio calculation value is represented by the following expression: α=2·Σ{(Vi·Gi)/Mi·Xi}, where, in the expression, Vi is a filling parameter of a metal oxide contained in the supporting glass substrate, Gi is a dissociation energy of a metal oxide contained in the supporting glass substrate. Mi is a molecular weight of a metal oxide contained in the supporting glass substrate, and Xi is a molar ratio of a metal oxide contained in the supporting glass substrate.

公开(公告)号：US20200369560A1

公开(公告)日：2020-11-26

申请号：US16991301

申请日：2020-08-12

Applicant: AGC Inc.

Inventor： Yosuke TAKEDA ,  Akio KOIKE ,  Toru IKEDA ,  Yasunari SAITO ,  Makoto FUKAWA ,  Takaaki MURAKAMI

IPC: C03C4/18 ,  C03C21/00 ,  C03C17/42 ,  C03C3/097 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091

Abstract: A cover glass includes a chemically strengthened glass including a first main surface having an area of 12,000 mm2 or larger and a second main surface, and an anti-fingerprint treated layer provided on or above the first main surface. The chemically strengthened glass has a depth of compressive stress layer DOL of 20 μm or larger, has a tensile stress layer having a P2O5 content of 2 mol % or less, and has A×B of 135 or larger, provided that, among oxide components constituting the tensile stress layer, a total concentration of Li2, Na2O, and K2O is A mol % and a concentration of Al2O3 is B mol %. The anti-fingerprint treated layer includes a surface having a frictional electrification amount, as determined by Method D described in JIS L1094:2014, of 0 kV or less and −1.5 kV or more.