Method for manufacturing glass substrate, and glass substrate
AssigneeAGC Inc.
InventorsIsao SAITO, Takuma FUJIWARA, Akihiro SHIBATA, Takeaki ONO, Ryoichi IIDA
Life of this patent
Estimating the term…
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.
Claims19
A method for producing a glass substrate that has a desired shape and is obtained from a glass plate, the method comprising:
- 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.
A method for producing a glass substrate that has a desired shape and is obtained from a glass plate, the method comprising:
- 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;
- performing a fusion-cutting at a position away from the scribe line on a side opposite to the desired shape;
- and
- further emitting a fourth laser beam to at least a part of the contour line formed by the scribe line, 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.
A glass substrate comprising a through hole, wherein an inner peripheral surface of the through hole comprises:
- inclined surfaces inclined in a thickness direction of the glass plate toward an inner side of the through hole from two main surfaces of the glass substrate facing each other;
- and
- an inner wall surface connecting the inclined surfaces inside the through hole in the thickness direction of the glass substrate, and
- a surface roughness of the inclined surfaces is smaller than a surface roughness of the inner wall surface.
A glass substrate comprising a through hole, wherein an inner peripheral surface of the through hole connects main surfaces facing each other,
- the inner peripheral surface comprises:
- an inner wall surface;
- and
- chamfered surfaces located between the inner wall surface and each of the main surfaces, and
- each of the chamfered surface is formed as a concave surface.
Dependencies are inferred from the claim text.