Display device

Patent metadata

Field	Value
Publication number	US-10897019-B2
Application number	US-201916456519-A
Country	US
Kind code	B2
Filing date	Jun 28, 2019
Priority date	Sep 18, 2018
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

A display device includes a substrate including a first substrate portion including a first area, a second substrate portion including a second area, and a bending area between the first substrate portion and the second substrate portion, the substrate being bendable around a bending axis that extends in a first direction, an encapsulation portion over the first substrate portion, a seal portion between the first substrate portion and the encapsulation portion to bond the first substrate portion to the encapsulation portion, an intermediate wiring including a first intermediate wiring portion in the first area and a second intermediate wiring portion in the second area, the intermediate wiring being covered by at least one inorganic layer, and a connection wiring including at least a portion in the bending area and connecting the first intermediate wiring portion to the second intermediate wiring portion.

First claim

What is claimed is:

1. A display device, comprising:
a substrate including a first substrate portion including a first area, a second substrate portion including a second area, and a bending area between the first substrate portion and the second substrate portion, the substrate being bendable around a bending axis that extends in a first direction at the bending area;
an encapsulation portion over the first substrate portion;
a seal portion between the first substrate portion and the encapsulation portion to bond the first substrate portion to the encapsulation portion;
an intermediate wiring including a first intermediate wiring portion in the first area and a second intermediate wiring portion in the second area, the intermediate wiring being covered by at least one inorganic layer; and
a connection wiring including at least a portion in the bending area and connecting the first intermediate wiring portion to the second intermediate wiring portion, wherein
the second substrate portion is separated from the first substrate portion with the bending area being in an interval between the first substrate portion and the second substrate portion, and
a bending material fills the interval.

2. The display device as claimed in claim 1 , wherein the bending material includes an organic material.

3. The display device as claimed in claim 1 , wherein a height of the bending material corresponds to a sum of a first thickness of the at least one inorganic layer and a second thickness of the intermediate wiring in the vertical direction of the substrate.

4. The display device as claimed in claim 3 , wherein a support material supports the substrate and is in a portion of the interval between the first substrate portion and the second substrate portion below the bending material.

5. The display device as claimed in claim 1 , wherein the connection wiring extends across the first area, the bending area, and the second area, and is bendable in the bending area.

6. The display device as claimed in claim 5 , wherein the connection wiring is connected to the first intermediate wiring portion and the second intermediate wiring portion by respective contact portions inside contact holes in the at least one inorganic layer.

7. The display device as claimed in claim 1 , wherein:
the connection wiring is exposed over the substrate, and
an upper organic layer covering the connection wiring is on the connection wiring.

8. The display device as claimed in claim 7 , wherein the connection wiring is surrounded by the bending material and the upper organic layer in the bending area.

9. The display device as claimed in claim 7 , wherein:
the seal portion is spaced apart from the upper organic layer, and
a space is between the seal portion and the upper organic layer.

10. The display device as claimed in claim 1 , wherein the seal portion at least partially overlaps the first intermediate wiring portion in a vertical direction of the substrate.

11. The display device as claimed in claim 1 , wherein:
a pad terminal electrically connected to the connection wiring is in the second substrate portion, and
a driving terminal of a driver is connected to the pad terminal.

12. The display device as claimed in claim 1 , wherein:
a display area is in the first area, and
the intermediate wiring is electrically connected to a device inside the display area.

13. The display device as claimed in claim 1 , further comprising an insulation layer on the intermediate wiring, wherein the connection wiring is disposed on the insulation layer.

14. A display device, comprising:
a substrate including a first substrate portion including a first area, a second substrate portion including a second area, and a bending area between the first substrate portion and the second substrate portion, the substrate being bendable around a bending axis that extends in a first direction at the bending area;
an encapsulation portion over the first substrate portion;
a seal portion between the first substrate portion and the encapsulation portion to bond the first substrate portion to the encapsulation portion;
an intermediate wiring including a first intermediate wiring portion in the first area and a second intermediate wiring portion in the second area, the intermediate wiring being covered by at least one inorganic layer; and
a connection wiring including at least a portion in the bending area and connecting the first intermediate wiring portion to the second intermediate wiring portion, wherein
the second substrate portion is separately located below the first substrate portion in a vertical direction of the substrate, and
the first substrate portion is connected to the second substrate portion by the bending area.

15. A display device, comprising:
a substrate including a first substrate portion including a display area, a second substrate portion including a pad terminal, and a bending area connecting the first substrate portion to the second substrate portion;
an encapsulation portion over the first substrate portion;
a seal portion between the first substrate portion and the encapsulation portion to bond the first substrate portion to the encapsulation portion;
an intermediate wiring including a first intermediate wiring portion electrically connected to a device inside the display area, and a second intermediate wiring portion electrically connected to the pad terminal and covered by at least one inorganic layer; and
a connection wiring over the substrate, the connection wiring connecting the first intermediate wiring portion to the second intermediate wiring portion,
wherein the bending area is in an interval between the first substrate portion and the second substrate portion and is filled with a bending material including an organic material.

16. The display device as claimed in claim 15 , wherein a height of the bending material corresponds to a sum of a first thickness of the at least one inorganic layer and a second thickness of the intermediate wiring in a vertical direction of the substrate.

17. The display device as claimed in claim 16 , wherein a support material that supports the substrate is in a portion of the interval between the first substrate portion and the second substrate portion below the bending material.

18. The display device as claimed in claim 16 , wherein the connection wiring extends across the first substrate portion, the bending area, and the second substrate portion and is bendable in the bending area.

19. The display device as claimed in claim 18 , wherein the connection wiring is connected to the first intermediate wiring portion and to the second intermediate wiring portion respectively by contact portions inside contact holes arranged in the at least one inorganic layer.

20. The display device as claimed in claim 19 , wherein:
the connection wiring is exposed over the substrate,
an upper organic layer covering the connection wiring is on the connection wiring, and
the connection wiring is surrounded by the bending material and the upper organic layer in the bending area.

Assignees

• Samsung Display Co Ltd

Inventors

• SEO ILhun
• Chung Yunmo
• Kang Jaewook
• Lee Daewoo
• Lee Takyoung

Classifications

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/8722

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

• H10K77/111

  Flexible substrates · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title