Method of manufacturing window and window manufactured by the same

Patent metadata

Field	Value
Publication number	US-12157693-B2
Application number	US-202217715547-A
Country	US
Kind code	B2
Filing date	Apr 7, 2022
Priority date	Apr 29, 2021
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A method of manufacturing a window and a window manufactured by the same are provided. A method of manufacturing a window includes laser cutting a base glass into a preliminary window using first laser light, irradiating, with second laser light, a point spaced apart from an edge of the preliminary window at a first distance, and providing a window including a flat portion and an edge portion by wet etching the preliminary window irradiated with the second laser light. A method of manufacturing a window having a chamfer shape at the edge portion is facilitated.

First claim

What is claimed is:

1. A method of manufacturing a window, the method comprising:
laser cutting a base glass into a preliminary window, using first laser light;
irradiating, with second laser light, a point spaced apart from an edge of the preliminary window at a first distance; and
providing a window comprising a flat portion and an edge portion by wet etching the preliminary window irradiated with the second laser light,
wherein the edge portion comprises an edge portion side surface formed from the second laser light and comprising a laser irradiation line extending in a thickness direction of the window.

2. The method of claim 1 , wherein the first laser light has greater energy than the second laser light.

3. The method of claim 2 , wherein the energy of the second laser light is about 50% to about 80% of the energy of the first laser light.

4. The method of claim 1 , wherein the first laser light and the second laser light are infrared laser light.

5. The method of claim 1 , wherein the first laser light and the second laser light each has a beam size of about 1 μm to about 5 μm.

6. The method of claim 1 , wherein the first distance is about 10% to about 20% of a thickness of the preliminary window.

7. The method of claim 6 , wherein the thickness of the preliminary window is about 20 μm to about 50 μm.

8. The method of claim 6 , wherein the first distance is about 2 μm to about 5 μm.

9. The method of claim 1 , wherein the edge portion is at an outer side of the flat portion, and has a decreasing thickness in a direction away from the flat portion.

10. The method of claim 1 , wherein the providing the window comprises wet etching such that the edge portion comprises an edge upper surface and an edge lower surface facing away from each other, the edge upper surface comprising a curved surface concave in a direction toward the edge lower surface, and the edge lower surface comprising a curved surface concave in a direction toward the edge upper surface.

11. The method of claim 1 , wherein the second laser light irradiation comprises irradiating, with the second laser light, a first portion spaced apart from the edge of the cut preliminary window at the first distance, and a second portion spaced apart from the edge of the preliminary window at a second distance.

12. The method of claim 11 , wherein the providing the window comprises wet etching such that the edge portion comprises an edge upper surface and an edge lower surface facing away from each other, the edge upper surface comprising a first sub upper surface and a second sub upper surface that are concave in a direction toward the edge lower surface and have different radii of curvature, and the edge lower surface comprising a first sub lower surface and a second sub lower surface that are concave in a direction toward the edge upper surface and have different radii of curvature.

13. A method of manufacturing a window, the method comprising:
laser cutting a base glass into a preliminary window, using first laser light;
irradiating, with second laser light, a point spaced apart from an edge of the preliminary window at a first distance; and
providing a window comprising a flat portion and an edge portion by wet etching the preliminary window irradiated with the second laser light,
wherein a thickness of the preliminary window and a thickness of the window have a relationship according to the following Equation 1:
t WP =t P-WP −(2 W RA ),

where, in Equation 1, W RA indicates the first distance, t P-WP indicates the thickness of the preliminary window, and t WP indicates a thickness of the flat portion.

14. A method of manufacturing a window, the method comprising:
laser cutting a base glass into a preliminary window, using first laser light;
irradiating, with second laser light, a point spaced apart from an edge of the preliminary window at a first distance; and
providing a window comprising a flat portion and an edge portion by wet etching the preliminary window irradiated with the second laser light,
wherein a width of the edge portion is less than the first distance.

Assignees

• Samsung Display Co Ltd
• Dowooinsys Co Ltd

Inventors

• Kim Hyungsik
• Roh Cheollae
• Lee Jang Doo
• Kim Beomsoo
• Park Hanggyun
• Lee Joongsung
• Jung Woohyun
• Yi Seungjun
• Lee Hyungsup
• Choi Sunhong

Classifications

• C03B33/0222

  Scoring using a focussed radiation beam, e.g. laser · CPC title

• B23K26/0608

  in the same heat affected zone [HAZ] (B23K26/0613, B23K26/0619 take precedence) · CPC title

• C03C15/00 Primary

  Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) · CPC title

• B23K26/402

  involving non-metallic material, e.g. isolators · CPC title

• B23K2103/54

  Glass · CPC title