Method for manufacturing display panel and display panel manufactured by the method

Patent metadata

Field	Value
Publication number	US-9796050-B2
Application number	US-201514681492-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Nov 27, 2014
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A method for manufacturing a display panel includes providing a mother substrate that includes a display area and a non-display area, and includes a first substrate, a second substrate facing the first substrate, and a sealant provided between the first substrate and the second substrate, generating a crack on the sealant through irradiation of laser onto the sealant between the first substrate and the second substrate, and cutting a part of the second substrate and a part of the sealant at a position corresponding to the crack.

First claim

What is claimed is:

1. A method for manufacturing a display panel, comprising:
providing a mother substrate having a display area and a non-display area and comprising:
disposing a second substrate on a first substrate facing and spaced apart from the first substrate;
disposing a sealant between the first substrate and the second substrate in the non-display area to form a seal;

irradiating the sealant with a laser to generate a crack in the sealant; and
cutting the second substrate and the sealant at a location on the second substrate corresponding to the crack, wherein:
the sealant comprises a second area that is positioned at the edges of the mother substrate and a first area that is positioned inside the second area,
the cutting comprises removing the second area, and
the laser irradiation of the sealant occurs at a boundary between the first area of the sealant and the second area of the sealant.

2. The method of claim 1 ,
wherein the display panel comprises a black matrix disposed on a surface of the second substrate that faces the first substrate, and
wherein the black matrix is disposed in a position corresponding to the sealant.

3. The method of claim 1 , wherein the sealant is disposed in an edge region of the first substrate and the second substrate.

4. The method of claim 1 , wherein the laser irradiation comprises laser irradiation of the second substrate.

5. The method of claim 1 ,
wherein the first substrate comprises a drive portion disposed in the non-display area configured to drive the display panel, and
wherein a part of the second substrate and a part of the sealant on the drive portion are removed by the cutting.

6. The method of claim 1 ,
wherein the display panel comprises a black matrix disposed on a surface of the second substrate that faces the first substrate, and
wherein the black matrix is disposed on an upper side of the first area on the sealant, but not an upper side of the second area of sealant.

7. The method of claim 1 , further comprising:
extending the crack in the sealant from the second substrate toward the first substrate.

8. The method of claim 1 , wherein the laser irradiation of the sealant modifies an adhesive force between the sealant and the second substrate.

9. A method for manufacturing a display panel, comprising:
providing a mother substrate having a display area and a non-display area and comprising:
disposing a second substrate on a first substrate facing and spaced apart from the first substrate;
disposing a sealant between the first substrate and the second substrate in the non-display area to form a seal;

irradiating the sealant with a laser to generate a crack in the sealant; and
cutting the second substrate and the sealant at a location on the second substrate corresponding to the crack,
wherein the laser irradiation of the sealant generates the crack from a surface of the sealant contacting the second substrate toward the first substrate.

10. A method for manufacturing a display panel, comprising:
providing a mother substrate having a display area and a non-display area and comprising:
disposing a second substrate on a first substrate facing and spaced apart from the first substrate;
disposing a sealant between the first substrate and the second substrate in the non-display area to form a seal;

irradiating the sealant with a laser to generate a crack in the sealant; and
cutting the second substrate, the sealant, and the first substrate at a location corresponding to the crack.

11. The method of claim 10 , wherein at least one of the first substrate and the second substrate comprises a light permeable material.

12. The method of claim 10 , wherein the laser irradiation modifies an adhesive force between the sealant and the first substrate or the second substrate by laser irradiation of the sealant.

13. The method of claim 10 , wherein the laser irradiation of the sealant occurs from at least one of the first substrate and the second substrate toward the sealant.

14. The method of claim 10 , wherein:
the sealant comprises a second area that is positioned at an edge of the mother substrate and a first area that is positioned inside the second area, and
a black matrix is disposed on a surface of the second substrate that faces the first substrate and is disposed on an upper side of the first area on the sealant, but not an upper side of the second area of sealant.

15. The method of claim 14 , wherein the laser irradiation of the sealant occurs at a boundary between the first area and the second area of the sealant, and
the laser radiates from at least one of the first substrate and the second substrate toward the boundary.

16. The method of claim 15 , further comprising:
extending the crack in the sealant towards at least one of the first substrate and the second substrate.

17. The method of claim 16 , wherein the cutting comprises extending the crack that is formed on the sealant by a cutting wheel from at least one of the first substrate and the second substrate toward an inside of the sealant.

18. The method of claim 10 , wherein the laser irradiation modifies an adhesive force between the sealant and the first substrate and between the sealant and the second substrate by laser irradiation of the sealant.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jang Hyun
• Kim Min Su
• Cha Tae Woon

Classifications

• G02F1/133351

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

• B32B38/105

  on edges · CPC title

• B32B37/0076

  characterised in that the layers are not bonded on the totality of their surfaces · CPC title

• B23K26/38 Primary

  by boring or cutting · CPC title

• B23K26/0093

  combined with mechanical machining or metal-working covered by other subclasses than B23K · CPC title