Glass plate production method, glass plate, glass article production method, glass article, and glass article production apparatus
AssigneeAGC Inc.
InventorsJun Ito, Ikuo Nagasawa
Life of this patent
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Abstract
A glass plate production method includes (1) preparing a glass material having a first main surface and a second main surface opposite to each other; (2) irradiating the first main surface of the glass material with a laser to form an in-plane void region having a plurality of voids arranged on the first main surface, and forming a plurality of internal void rows each having one void or two or more voids arranged from the in-plane void region toward the second main surface of the glass material; and (3) chemically strengthening the glass material having the internal void rows formed therein.
Claims8
A glass plate production method comprising:
- irradiating a glass material which has a first main surface and a second main surface opposite to each other, with a laser to form an in-plane void region having a plurality of surface voids arranged on the first main surface and a plurality of internal void rows each having at least one internal void apart from a surface void arranged from the in-plane void region toward the second main surface of the glass material;
- and
- chemically strengthening the glass material having the plurality of internal void rows formed therein by penetrating alkali metal ions to the glass material,
- wherein the plurality of internal void rows are different from through holes formed so as to penetrate the glass material in a thickness direction of the glass material, and
- the surface void and the at least one internal void in the internal void row are not continuous or connected to each other except via optional microcracks.
Dependencies are inferred from the claim text.