DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

• US 20160104863A1
• Filed: 03/13/2015
• Published: 04/14/2016
• Est. Priority Date: 10/10/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Park, Cheondeok
• Granted Patent: US 9,882,163 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

A display device is disclosed. In one aspect, the device includes first and second substrates each including a display area and a non-display area around the display area, a plurality of pixels formed in the display area of the first substrate and an internal circuit unit formed in the non-display area of the first substrate and electrically connected to the pixels. The device further includes a sealing member formed between the non-display areas of the first and second substrates to surround the display areas. The sealing member includes a first portion and a second portion, the second portion surrounded by the first portion and at least partially overlapping the internal circuit unit, and a groove is formed in the second substrate at a position corresponding to the second portion of the sealing member.

Claims

1. A display device, comprising:

first and second substrates each comprising a display area and a non-display area surrounding the display area;

a plurality of pixels formed in the display area of the first substrate;

an internal circuit unit formed in the non-display area of the first substrate and electrically connected to the pixels; and

a sealing member formed between the non-display areas of the first and second substrates to surround the display areas,

wherein the sealing member comprises a first portion and a second portion, the second portion surrounded by the first portion and at least partially overlapping the internal circuit unit, and

wherein a groove is formed in the second substrate at a position corresponding to the second portion of the sealing member.

2. The display device of claim 1, wherein an upper part of the second portion is accommodated in the groove.

3. The display device of claim 1, wherein the first portion is a cured portion, and wherein the second portion is a non-cured portion.

4. The display device of claim 1, wherein the first portion has a height less than that of the second portion.

5. The display device of claim 1, further comprising a touch electrode pattern formed over the second substrate.

6. The display device of claim 5, wherein an end portion of the touch electrode pattern at least partially overlaps the second portion of the sealing member.

7. The display device of claim 5, wherein the touch electrode pattern is formed on a first surface of the second substrate, and wherein the groove is formed in a second surface of the second substrate, the second surface being opposite the first surface and facing the first substrate.

8. The display device of claim 1, wherein the non-display area of the first substrate comprises:

a sealing area in which the sealing member is formed; and

an internal circuit area in which the internal circuit unit is formed, wherein at least a portion of the sealing area is farther from the display area than the internal circuit area,

wherein the sealing area and the internal circuit area at least partially overlap each other,

wherein the first portion of the sealing member is formed in a region of the sealing area not overlapping the internal circuit area, and

wherein the second portion of the sealing member is formed in a region of the sealing area overlapping the internal circuit area.

9. A method of manufacturing a display device, the method comprising:

providing a first substrate, the first substrate comprising a display area in which a plurality of pixels are formed and a non-display area in which an internal circuit unit electrically connected to the pixels is formed, the non-display area surrounding the display area;

forming a sealing material in the non-display area of the first substrate, a portion of the sealing material overlapping the internal circuit unit;

placing a second substrate above the first substrate, the second substrate having a groove formed at a position corresponding to the portion of the sealing material; and

curing the sealing material.

10. The method of claim 9, wherein the forming of the sealing material comprises:

applying paste comprising an inorganic material; and

drying and firing the paste to form the sealing material.

11. The method of claim 9, wherein the sealing material comprises:

a first portion not overlapping the internal circuit unit; and

a second portion surrounded by the first portion and at least partially overlapping the internal circuit unit.

12. The method of claim 11, wherein the curing of the sealing material comprises curing the first portion by casting light to the first portion.

13. The method of claim 9, wherein the second substrate comprises a touch electrode pattern formed thereon.

14. The method of claim 13, wherein the touch electrode pattern is formed on a first surface of the second substrate, and wherein the groove is formed in a second surface of the second substrate opposite to the first surface.

15. The method of claim 13, wherein an end portion of the touch electrode pattern is formed above the portion of the sealing member overlapping the internal circuit unit.

16. A display device, comprising:

first and second substrates each comprising a display area and a non-display area adjacent to the display area;

an internal circuit unit formed in the non-display area; and

a sealing member formed between the non-display areas of the first and second substrates to surround the display areas,

wherein the sealing member comprises a first portion and a second portion, and

wherein a first distance between the first and second substrates corresponding to the first portion of the sealing member is less than a second distance between the first and second substrates corresponding to the second portion of the sealing member

17. The display device of claim 16, wherein a groove is formed in the second substrate at a position corresponding to the second portion of the sealing member.

18. The display device of claim 17, wherein an upper part of the second portion is inserted into the groove.

19. The display device of claim 17, further comprising a touch electrode pattern formed over the second substrate, wherein at least a portion of the groove is formed directly below the touch electrode pattern.