公开(公告)号：US20220274211A1

公开(公告)日：2022-09-01

申请号：US17747971

申请日：2022-05-18

Applicant: AGC Inc.

Inventor： Isao SAITO ,  Takuma FUJIWARA ,  Jun ITO ,  Ikuo NAGASAWA ,  Takeaki ONO

IPC: B23K26/53 ,  B23K26/073 ,  B23K26/06 ,  B23K26/00

Abstract: A glass plate processing method for dividing a glass plate by a separation line that divides a main surface of the glass plate into two regions, includes: moving an irradiation point of a first laser beam along the separation line, and forming a crack extending from the separation line diagonally with respect to the main surface, in a cross-section orthogonal to the separation line; after the crack is formed, moving an irradiation point of a second laser beam along the separation line, and forming a modified portion, in the cross-section, on a virtual line extending in a direction perpendicular to the main surface, from a tip of the crack towards a center of a thickness of the glass plate; and after the modified portion is formed, applying stress to the glass plate and forming a new crack spanning from the tip of the crack to the modified portion.

公开(公告)号：US20220126416A1

公开(公告)日：2022-04-28

申请号：US17571184

申请日：2022-01-07

Applicant: AGC Inc.

Inventor： Takeaki ONO ,  Koki MORIYA

IPC: B24B9/10 ,  C03C19/00

Abstract: A glass substrate includes: a first major surface; a second major surface that is opposite to the first major surface; an end surface interposed between the first major surface and the second major surface; a first boundary surface that is interposed between the first major surface and the end surface and connected to the end surface; and a second boundary surface that is connected to the first major surface and the first boundary surface. The second boundary surface is a convex curved surface, and the second boundary surface has a radius of curvature R2 of 0.1 mm or larger and 2.0 mm or smaller.

公开(公告)号：US20240308899A1

公开(公告)日：2024-09-19

申请号：US18676582

申请日：2024-05-29

Applicant: AGC Inc.

Inventor： Isao SAITO ,  Takuma FUJIWARA ,  Akihiro SHIBATA ,  Takeaki ONO ,  Ryoichi IIDA

IPC: C03B33/08 ,  C03B33/02 ,  G02B5/18

CPC classification number: C03B33/082 ,  C03B33/0222 ,  G02B5/1866

Abstract: A method for producing a glass substrate that has a desired shape and is obtained from a glass plate, the method includes: emitting a first laser beam to the glass plate to form a scribe line over an entire thickness of the glass plate, the scribe line defining a contour line of the glass substrate having the desired shape; and performing a fusion-cutting at a position away from the scribe line on a side opposite to the desired shape and removing an unnecessary region of the glass plate along the scribe line to obtain the glass substrate having the desired shape along the contour line.

公开(公告)号：US20220259091A1

公开(公告)日：2022-08-18

申请号：US17738693

申请日：2022-05-06

Applicant: AGC Inc.

Inventor： Isao SAITO ,  Takuma FUJIWARA ,  Takeaki ONO

IPC: C03B33/02

Abstract: A large plate includes a first main surface and a second main surface, and is separated into a first small plate and a second small plate at a separation surface. The separation surface intersects with the first main surface and the second main surface at a first intersection line and a second intersection line, respectively. The first intersection line and the second intersection line include a curved portion. The first intersection line is disposed on one side of the second intersection line in a planar view. In a cross-section perpendicular to the first intersection line, the separation surface is inclined with respect to a normal to the first main surface. (1) Form a modified portion on the separation surface to be separated. (2) Form a crack on the separation surface. (3) Separate the first and second small plate.

公开(公告)号：US20220089026A1

公开(公告)日：2022-03-24

申请号：US17544753

申请日：2021-12-07

Applicant: AGC Inc.

Inventor： Takeaki ONO ,  Koki MORIYA ,  Toru IKEDA ,  Kensuke FUJII

IPC: B60K35/00 ,  H05K5/03 ,  C03C17/34

Abstract: A glass substrate includes a first major surface, a second major surface, an end surface, a first boundary surface, a second boundary surface, and a bent portion in which the first major surface is bent so as to be concave and the second major surface is bent so as to be convex. The bent portion includes a portion in which a distance D1 from the end surface to the first major surface in a tangential direction, extending from the end surface toward the first major surface, of the glass substrate is longer than a distance D2 from the end surface to the second major surface in a tangential direction, extending from the end surface toward the second major surface, of the glass substrate. A difference between the distance D1 and the distance D2 is 50 μm or larger.