公开(公告)号：US20220274211A1

公开(公告)日：2022-09-01

申请号：US17747971

申请日：2022-05-18

申请人： AGC Inc.

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

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

摘要： 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：US20240308899A1

公开(公告)日：2024-09-19

申请号：US18676582

申请日：2024-05-29

申请人： AGC Inc.

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

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

CPC分类号： C03B33/082 ,  C03B33/0222 ,  G02B5/1866

摘要： 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

申请人： AGC Inc.

发明人： Isao SAITO ,  Takuma FUJIWARA ,  Takeaki ONO

IPC分类号： C03B33/02

摘要： 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：US20220112126A1

公开(公告)日：2022-04-14

申请号：US17645791

申请日：2021-12-23

申请人： AGC Inc.

发明人： Isao SAITO ,  Yasumasa KATO ,  Takuma FUJIWARA

IPC分类号： C03C23/00 ,  C03C21/00 ,  C03B33/09 ,  C03C3/087

摘要： The present invention relates to a strengthened glass sheet having a first main surface, a second main surface which faces the first main surface, and an end surface, in which at least one of the first main surface and the second main surface has a surface compressive stress formed by a chemical strengthening treatment, the strengthened glass sheet includes a strengthened portion in which a planar compressive stress is formed along the end surface in a direction parallel with the end surface, the planar compressive stress of the strengthened portion has a maximum value of 1-120 MPa, and the strengthened portion has a width, as measured from the end surface in a direction normal to the end surface, of 0.5 times or more a thickness of the strengthened glass sheet.