Display apparatus and multi-screen display apparatus including the same

Patent metadata

Field	Value
Publication number	US-10672858-B2
Application number	US-201816119859-A
Country	US
Kind code	B2
Filing date	Aug 31, 2018
Priority date	Aug 31, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A display apparatus can includes a first substrate including an active area, a non-active area surrounding the active area, and a bending part bent in a curve shape; a pixel array layer disposed in the active area of the first substrate; a second substrate disposed on the pixel array layer in which the pixel array layer is between the first substrate and the second substrate; and a cover layer disposed in the non-active area of the first substrate, the cover layer covering a side surface of the second substrate, in which the cover layer is disposed in a remaining portion of the non-active area except for an area of the non-active area that overlaps with the bending part.

First claim

What is claimed is:

1. A display apparatus comprising:
a first substrate including an active area, a non-active area surrounding the active area, and a bending part bent in a curve shape;
a pixel array layer disposed in the active area of the first substrate;
a second substrate disposed on the pixel array layer wherein the pixel array layer is between the first substrate and the second substrate; and
a cover layer disposed in the non-active area of the first substrate, the cover layer covering a side surface of the second substrate,
wherein the cover layer is disposed in a remaining portion of the non-active area except for an area of the non-active area that overlaps the bending part,
wherein outermost edges of the first substrate are bent towards the second substrate and surround outermost edges of the second substrate,
wherein an outermost edge of the pixel array layer is spaced apart from the cover layer in the bending part, and
wherein the bending part includes a reduced stress area that is devoid of the cover layer, and the reduced stress area is at least partially surrounded by portions of the second substrate, the cover layer, the first substrate and the pixel array layer.

2. The display apparatus of claim 1 , wherein the second substrate comprises a first surface which face to the first substrate and a second surface opposite to the first surface, and
wherein the bending part of the first substrate is bent toward the second surface of the second substrate.

3. The display apparatus of claim 1 , further comprising a light-transmitting film disposed on the first substrate.

4. The display apparatus of claim 1 , wherein the non-active area comprises first, second, third and fourth non-active areas, and
wherein the bending part comprises:
a first bending part at an edge of the active area adjacent to the first non-active area; and
a second bending part at an edge of the active area adjacent to the second non-active area.

5. The display apparatus of claim 4 , wherein the first, second, third and fourth non-active areas are a left non-active area of the first substrate, a right non-active area of the first substrate, an upper non-active area of the first substrate, and a lower non-active area of the first substrate, respectively.

6. The display apparatus of claim 4 , wherein the cover layer is removed from an area where the third and fourth non-active areas overlap with the bending part.

7. The display apparatus of claim 4 , wherein the cover layer is patterned in a remaining portion of the non-active area except for an area where the third and fourth non-active areas overlap with the bending part.

8. The display apparatus of claim 4 , further comprising:
a pad part disposed in at least one of the third and fourth non-active areas; and
a display driving circuit unit electrically connected to the pad part.

9. The display apparatus of claim 4 , further comprising a scan driving circuit disposed in at least one of the first and second non-active areas.

10. The display apparatus of claim 1 , wherein the bending part has a curvature radius of 1 mm to 5 mm.

11. The display apparatus of claim 1 , wherein the cover layer includes an outer curved portion and an inner notched portion opposite to the outer curved portion, and
wherein an edge of the second substrate is seated in the inner notched portion of the cover layer.

12. The display apparatus of claim 11 , wherein the inner notched portion of the cover layer overlaps with the reduced stress area of the bending part in a viewing direction of the display apparatus.

13. The display apparatus of claim 1 , wherein the pixel array layer includes pixels disposed in the bending part.

14. A multi-screen display apparatus comprising:
a plurality of screen modules each including a plurality of side surfaces, wherein side surfaces of adjacent screen modules among the plurality of screen modules being closely adhered to each other,
wherein each of the plurality of screen modules comprises the display apparatus of claim 1 , and bending parts of adjacent display apparatuses contact each other.

15. A multi-screen display apparatus comprising a plurality of display apparatuses including the display apparatus of claim 1 ,
wherein bending parts of adjacent display apparatuses contact each other.

16. A display apparatus comprising:
a first screen module including:
a first substrate including a first active area, a first non-active area surrounding the first active area, and a first bending part bent in a curve shape,
a first pixel array layer disposed in the first active area of the first substrate,
a second substrate disposed on the first pixel array layer, wherein the first pixel array layer is between the first substrate and the second substrate, and
a first cover layer disposed in the first non-active area of the first substrate, the first cover layer covering a first side surface of the second substrate,
wherein the first cover layer is disposed in a remaining portion of the first non-active area except for an area of the first non-active area that overlaps the first bending part,
wherein outermost edges of the first substrate are bent towards the second substrate and surround outermost edges of the second substrate, and
wherein an outermost edge of the first pixel array layer is spaced apart from the first cover layer in the first bending part, and
wherein the first bending part includes a first reduced stress area that is devoid of the first cover layer, and the first reduced stress area is at least partially surrounded by portions of the second substrate, the first cover layer, the first substrate and the first pixel array layer; and
a second screen module including:
a third substrate including a second active area, a second non-active area surrounding the second active area, and a second bending part bent in a curve shape,
a second pixel array layer disposed in the second active area of the third substrate,
a fourth substrate disposed on the second pixel array layer, wherein the second pixel array layer is between the third substrate and the fourth substrate, and
a second cover layer disposed in the second non-active area of the third substrate, the second cover layer covering a second side surface of the fourth substrate,
wherein the second bending part includes a second reduced stress area that is devoid of the second cover layer,
wherein the first screen module includes a side surface adhered to and parallel to a side surface of the second screen module.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Moonsun
• Park Seongwoo
• Jung Haeyoon

Classifications

• H01L51/0097

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic

• G02F1/13336 Primary

  Combining plural substrates to produce large-area displays, e.g. tiled displays · CPC title

• H01L27/3293 Primary

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic