Method of manufacturing impact resistant display apparatus

Patent metadata

Field	Value
Publication number	US-11067856-B2
Application number	US-202016865198-A
Country	US
Kind code	B2
Filing date	May 1, 2020
Priority date	Apr 15, 2015
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A display apparatus comprises a first substrate comprising a first external surface and a first internal surface; a second substrate having a second external surface and a second internal surface facing the first internal surface of the first substrate; and a display unit disposed between the first and second substrates and comprising an array of pixels. The first substrate comprises a first side connecting the first external surface and the first internal surface. In a cross section perpendicular to the first external surface, the first side comprises a first straight region and a first curved region located between the straight region and the first internal surface. The second substrate comprises a second side connecting the first external surface and the first internal surface. The second side comprises a second straight region and a second curved region located between the straight region and the second internal surface.

First claim

What is claimed is:

1. A method of manufacturing a display apparatus, the method comprising:
providing an intermediate product comprising:
a first substrate comprising a first external surface and a first internal surface;
a second substrate comprising a second external surface and a second internal surface;
a display unit comprising an array of pixels disposed between the first substrate and the second substrate; and
an adhesive member located between the first internal surface of the first substrate and the second internal surface of the second substrate to surround the display unit and combining the first and second substrates together; and

cutting the intermediate product to make a final product, wherein, in the final product, the first substrate comprises a first side connecting the first external surface and the first internal surface, wherein, in a cross section perpendicular to the first external surface, the first side comprises a first straight region and a first curved region located between the first straight region and the first internal surface, where at least a portion of the first curved region is farther from the display unit than the first straight region when viewed in a viewing direction perpendicular to the first external surface, and further such that the second substrate comprises a second side connecting the second external surface and the second internal surface, wherein, in the cross section, the second side comprises a second straight region and a second curved region located between the second straight region and the second internal surface, where at least a portion of the second curved region is farther from the display unit than the second straight region when viewed in the viewing direction perpendicular to the first external surface.

2. The method of claim 1 , further comprising irradiating light beams to a part of the adhesive member prior to cutting the intermediate product, such that after curing the adhesive member, the adhesive member comprises a cured portion and an uncured portion, the cured portion being disposed between the display unit and the uncured portion.

3. The method of claim 2 , wherein cutting comprises moving a first cutter to contact the first substrate at a first cutting point on the first external surface, the first cutting point being located between an outermost end of the cured portion and the display unit when viewed in a viewing direction perpendicular to the first external surface.

4. The method of claim 3 , wherein, when a center of the cured portion is defined between the outermost end and an innermost end of the cured portion, the first cutting point is located between the outermost end and the center of the cured portion.

5. The method of claim 3 , wherein cutting further comprises moving a second cutter to contact the second substrate at a second cutting point on the second external surface, the second cutting point being located between the outermost end of the cured portion and the display unit when viewed in a viewing direction perpendicular to the second external surface.

6. The method of claim 2 , further comprising forming a conductive pattern for a touch screen and a blocking pattern over the second external surface of the second substrate,
wherein the blocking pattern blocks the light beams not to reach the other part of the adhesive member while irradiating the light beams to form the uncured portion of the adhesive member.

7. The method of claim 6 , wherein the uncured portion of the adhesive member and the blocking pattern are removed while cutting the intermediate product.

8. The method of claim 1 , further comprising adhering a film covering at least one of the first external surface of the first substrate and the second external surface of the second substrate while not covering side surfaces of the first substrate and the second substrate.

9. The method of claim 1 , wherein the first curved region and the second curved region are cut approximately perpendicular to lines of internal stress in the first substrate and the second substrate, respectively.

10. A method of manufacturing a display apparatus, the method comprising:
providing an intermediate product comprising:
a first substrate comprising a first external surface and a first internal surface;
a second substrate comprising a second external surface and a second internal surface;
a display unit comprising an array of pixels between the first substrate and the second substrate; and
an adhesive member located between the first internal surface of the first substrate and the second internal surface of the second substrate to surround the display unit and combining the first and second substrates together;

irradiating light beams to a part of the adhesive member so that the adhesive member comprises a cured portion and an uncured portion, the cured portion being between the display unit and the uncured portion; and
cutting the intermediate product to make a final product by:
moving a first cutter to contact the first substrate at a first cutting point on the first external surface, the first cutting point being located between an outermost end of the cured portion and the display unit when viewed in a viewing direction perpendicular to the first external surface, and
advancing the first cutter in a thickness direction of the first substrate toward the first internal surface only a first distance which is smaller than a thickness of the first substrate, such that a remaining portion of the first substrate is cut without further advancing the first cutter in the thickness direction of the first substrate toward the first internal surface,

wherein, in the final product, the first substrate comprises a first side connecting the first external surface and the first internal surface, wherein, in a cross section perpendicular to the first external surface, the first side comprises a first straight region and a first curved region located between the first straight region and the first internal surface.

11. A method of manufacturing a display apparatus, the method comprising:
providing an intermediate product comprising:
a first substrate comprising a first external surface and a first internal surface;
a second substrate comprising a second external surface and a second internal surface;
a display unit comprising an array of pixels between the first substrate and the second substrate; and
an adhesive member located between the first internal surface of the first substrate and the second internal surface of the second substrate to surround the display unit and combining the first and second substrates together;

irradiating light beams to a part of the adhesive member so that the adhesive member comprises a cured portion and an uncured portion, the cured portion being between the display unit and the uncured portion; and
cutting the intermediate product to make a final product by:
moving a first cutter to contact the first substrate at a first cutting point on the first external surface, the first cutting point being located between an outermost end of the cured portion and the display unit when viewed in a viewing direction perpendicular to the first external surface,
advancing the first cutter in a thickness direction of the first substrate toward the first internal surface only a first distance which is smaller than a thickness of the first substrate,
moving a second cutter to contact the second substrate at a second cutting point on the second external surface, the second cutting point being located between the outermost end of the cured portion and the display unit when viewed in a viewing direction perpendicular to the second external surface,

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hyoengki
• Sin Sangwook
• Shin Jaeyoung
• Yoo Seungjoon
• Lee Jaeman
• Lee Hyunsoo
• Cheon Beomjun
• Hong Gwangjoon

Classifications

• H10D84/01

  Manufacture or treatment · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10D86/00 Primary

  Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates · CPC title

• G02F1/133302

  Rigid substrates, e.g. inorganic substrates · CPC title

• G02F1/133351

  Manufacturing of individual cells out of a plurality of cells, e.g. by dicing · CPC title