DISPLAY PANEL ASSEMBLY, MANUFACTURING METHOD THEREOF, AND DISPLAY DEVICE INCLUDING THE SAME

• US 20090021681A1
• Filed: 03/07/2008
• Published: 01/22/2009
• Est. Priority Date: 07/20/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Heo, Jeong-uk, YUN, Yong-kuk
• Application Number:
  US12/044,730
• Publication Number:
  US 20090021681A1
• Time in Patent Office: Days
• US Class Current: 349/128
• CPC Class Codes: G02F 1/13336 Combining plural substrates to produce large-area displays, e.g. tiled displays
• CPC Class Codes: G02F 1/133388 with constructional differences between the display region and the peripheral region
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells

Abstract

A manufacturing method of a display panel assembly, includes: preparing a first panel and a second panel each having a display area and a non-display area; forming a first alignment layer and a second alignment layer on the first panel and the second panel, respectively; eliminating at least a part of the first alignment layer and the second alignment layer which is disposed on the non-display area; forming a sealant on the non-display area of at least one of the first panel and the second panel; and adhering the first panel and the second panel each other with the first alignment layer and the second alignment layer facing each other.

Claims

1. A manufacturing method of a display panel assembly, comprising:

preparing a first panel and a second panel each having a display area and a non-display area;

forming a first alignment layer and a second alignment layer on the first panel and the second panel, respectively;

eliminating at least a part of the first alignment layer and the second alignment layer which is disposed on the non-display area;

forming a sealant on the non-display area of at least one of the first panel and the second panel; and

adhering the first panel and the second panel each other with the first alignment layer and the second alignment layer facing each other.

2. The method according to claim 1, wherein the sealant is spaced from the first alignment layer and the second alignment layer.

3. The method according to claim 2, wherein the sealant has a width of 0.5-1.5 mm.

4. The method according to claim 2, wherein the sealant is spaced from the display area by a distance 0.1-1.0 mm.

5. The method according to claim 2, wherein the sealant is spaced from relatively close one of an edge of the first panel and an edge of the second panel by a distance 0.1-0.3 mm.

6. The method according to claim 5, wherein the sealant is spaced from relatively distant one of the edge of the first panel and the edge of the second panel by a distance 1.0-1.5 mm.

7. The method according to claim 1, wherein the first alignment layer and the second alignment layer are eliminated using a spot-etching atmospheric plasma device.

8. The method according to claim 1, wherein substantially all the first alignment layer and the second alignment layer are eliminated from the non-display area.

9. The method according to claim 1, wherein the sealant comprises a conductive material.

10. A display panel assembly which has a display area and a non-display area around the display, comprising:

a first panel which comprises a thin film transistor and a pixel electrode;

a second panel which comprises a common electrode and is arranged opposite to the first panel;

a first alignment layer which is formed on a surface of the first panel facing the second panel;

a second alignment layer which is formed on a surface of the second panel facing the first panel;

a liquid crystal layer which is disposed between the first panel and the second panel; and

a sealant which is arranged on the non-display area to surround the display area and adheres the first panel and the second panel each other,

wherein at least a part of the first alignment layer and the second alignment layer is eliminated from the non-display area.

11. The display panel assembly according to claim 10, wherein the sealant is spaced from the first alignment layer and the second alignment layer.

12. The display panel assembly according to claim 11, wherein the sealant has a width of 0.5-1.5 mm.

13. The display panel assembly according to claim 11, wherein the sealant is spaced from the display area by a distance of 0.1-1.0 mm.

14. The display panel assembly according to claim 10, wherein substantially all the first alignment layer and the second alignment layer are eliminated from the non-display area.

15. The display panel assembly according to claim 10, wherein the sealant comprises a conductive material.

16. The display panel assembly according to claim 15, wherein the sealant comprises a conductive ball, and the sealant is electrically connected with the common electrode of the second panel.

17. A display device comprising:

a plurality of display panel assemblies each having a display area through which an image is displayed and a non-display area around the display area; and

a support which supports the plurality of display panel assemblies to be aligned and connected each other,

wherein each display panel assembly comprising;

a first panel which comprises a thin film transistor and a pixel electrode;

a second panel which comprises a common electrode and is arranged opposite to the first panel;

a first alignment layer which is formed on a surface of the first panel facing the second panel;

a second alignment layer which is formed on a surface of the second panel facing the first panel;

an liquid crystal layer which is disposed between the first panel and the second panel; and

a sealant which is arranged on the non-display area to surround the display area and adheres the first panel and the second panel each other,

wherein at least a part of the first alignment layer and the second alignment layer is eliminated from the non-display.

18. The display device according to claim 17, wherein the sealant is spaced from the first alignment layer and the second alignment layer.

19. The display device according to claim 17, wherein substantially all the first alignment layer and the second alignment layer are eliminated from the non-display area.

20. The display device according to claim 17, wherein the sealant comprises a conductive material.