公开(公告)号：US20210214268A1

公开(公告)日：2021-07-15

申请号：US17144197

申请日：2021-01-08

Applicant: AGC Inc.

Inventor： Kazutaka OTSUKA ,  Kyushiro IGARASHI ,  Takeshi SHIMIZU ,  Minoru TAMADA

IPC: C03C3/087 ,  G02B1/18 ,  B60K35/00

Abstract: The present invention relates to a cover glass for a display, which is a glass plate having a first main surface and a second main surface. The cover glass contains, as represented by mol percentage based on oxides, from 50 to 75% of SiO2, from 5 to 20% of Al2O3, from 2 to 20% of Na2O, from 0 to 6% of K2O, from 0 to 15% of MgO, from 0 to 10% of a total amount (CaO+SrO+BaO) of CaO, SrO and BaO, from 0 to 5% of a total amount (ZrO2+TiO2) of ZrO2 and TiO2, from 0 to 10% of B2O3, and from 0 to 20% of Li2O. The cover glass has a ream minimum distance of 100 mm or more and 1,000 mm or less, and a ream period of 1 mm or more and 30 mm or less.

公开(公告)号：US20210293995A1

公开(公告)日：2021-09-23

申请号：US17335286

申请日：2021-06-01

Applicant: AGC Inc.

Inventor： Kensuke FUJII ,  Shinji KOBUNE ,  Minoru TAMADA ,  Hitoshi MISHIRO

IPC: G02B1/115 ,  G02B1/18 ,  C03C17/02 ,  C03C17/245 ,  C03C17/34 ,  C03C21/00 ,  C23C14/00 ,  C23C14/08 ,  C23C14/10 ,  C23C14/34

Abstract: A cover glass includes a glass substrate and an antireflection film disposed on at least one of main surfaces of the glass substrate, and the at least one of main surfaces of the glass substrate has one or more cracks formed therein, the crack(s) each having a length of 5 μm or less, and a difference Δa* in a* value between any two points within a surface of the cover glass on the side where the antireflection film has been disposed and a difference Δb* in b* value between any two points within the surface of the cover glass on the side where the antireflection film has been disposed satisfy the following expression: √{(Δa*)2+(Δb*)2}≤4.

公开(公告)号：US20210122672A1

公开(公告)日：2021-04-29

申请号：US17142088

申请日：2021-01-05

Applicant: AGC Inc.

Inventor： Hitoshi MISHIRO ,  Keiko KOYAMA ,  Minoru TAMADA

IPC: C03C17/42 ,  C03C15/00 ,  C03C19/00 ,  C03C17/30 ,  C03C21/00 ,  C03C15/02 ,  G02B1/18

Abstract: An antiglare glass substrate includes a glass substrate having a first main surface and a second main surface that is opposite to the first main surface. The first main surface has undergone an antiglare treatment and a fluorine-containing organosilicon compound coating film as an antifouling film is laminated thereon. The first main surface partly includes a non-antiglare-treated portion that has not undergone the antiglare treatment. The non-antiglare-treated portion has a surface roughness Ra of less than 10 nm. A difference in height along a plate thickness direction of the glass substrate between the antiglare-treated portion that has undergone the antiglare treatment and the non-antiglare-treated portion is 10

公开(公告)号：US20210284571A1

公开(公告)日：2021-09-16

申请号：US17335309

申请日：2021-06-01

Applicant: AGC Inc.

Inventor： Kensuke FUJII ,  Shinji KOBUNE ,  Minoru TAMADA ,  Hitoshi MISHIRO

IPC: C03C17/34 ,  C03C17/42 ,  G02B27/00 ,  G02B1/115 ,  C03C3/083 ,  C03C3/085 ,  C03C3/087 ,  C03C4/18 ,  C03C21/00 ,  C09D1/00 ,  C09D5/00 ,  C09D5/16

Abstract: A cover glass includes: a glass substrate having a convex and concave shape formed on at least one of surfaces thereof by an antiglare treatment; and an antireflection film disposed on the surface of the glass substrate, the surface having the convex and concave shape. In the cover glass, a difference Δa* in a* value between any two points within a surface of the cover glass on the side where the antireflection film is present and a difference Δb* in b*value between any two points within the surface of the cover glass on the side where the antireflection film is present satisfy the following expression: √{(Δa*)2+(Δb*)2}≤4.