Flexible display apparatus including monitoring and buffering banks

Patent metadata

Field	Value
Publication number	US-12082452-B2
Application number	US-202318310996-A
Country	US
Kind code	B2
Filing date	May 2, 2023
Priority date	Feb 21, 2020
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

A display apparatus includes a display area including pixels; a non-display area adjacent to the display area; a first planarization layer located in the display area and the non-display area; a second planarization layer on the first planarization layer; an organic insulating layer on the second planarization layer; a first dam on the first planarization layer, including the second planarization layer and the organic insulating layer, and surrounding the display area; a second dam disposed outside the first dam, including the second planarization layer and the organic insulating layer, and surrounding the first dam; and a monitoring bank disposed between the display area and the first dam and including the second planarization layer and the organic insulating layer. A thickness of the second planarization layer included in the monitoring bank is less than a thickness of the second planarization layer included in the first dam.

First claim

What is claimed is:

1. A flexible display apparatus comprising:
a display area disposed on a substrate and including a plurality of pixels;
a non-display area adjacent to the display area and including a bending area;
a first dam surrounding the display area;
a second dam disposed outside the first dam and surrounding the first dam;
a monitoring bank disposed between the display area and the second dam;
a buffering bank disposed outside the monitoring bank and covering an opening in a first insulating layer on the substrate in the bending area;
a thin-film encapsulation layer covering the display area and a portion of the non-display area;
a touch screen layer disposed on the thin-film encapsulation layer; and
a touch connection line electrically connected to the touch screen layer and extending to the non-display area, wherein
an end of the touch connection line is located closer to the display area than the monitoring bank is.

2. The flexible display apparatus of claim 1 , wherein a height of the monitoring bank is less than a height of the first dam.

3. The flexible display apparatus of claim 1 , wherein an organic insulating layer included in the buffering bank directly contacts the substrate via the opening in the bending area.

4. The flexible display apparatus of claim 1 , wherein
the thin-film encapsulation layer comprises:
a first inorganic encapsulation layer;
an organic encapsulation layer disposed on the first inorganic encapsulation layer; and
a second inorganic encapsulation layer disposed on the organic encapsulation layer,

the organic encapsulation layer is disposed inside the second dam, and
the first inorganic encapsulation layer and the second inorganic encapsulation layer each extend over the second dam and cover a portion of the buffering bank.

5. The flexible display apparatus of claim 4 , wherein an end of the first inorganic encapsulation layer and an end of the second inorganic encapsulation layer are located closer to the display area than the opening is.

6. The flexible display apparatus of claim 4 , wherein the first insulating layer is directly on the substrate.

7. The flexible display apparatus of claim 6 , wherein the first insulating layer comprises an inorganic material.

8. The flexible display apparatus of claim 6 , wherein the opening extends into a second insulating layer disposed on the first insulating layer.

9. The flexible display apparatus of claim 8 , wherein the second insulating layer comprises an inorganic material.

10. The flexible display apparatus of claim 8 , wherein the opening extends into a third insulating layer disposed on the second insulating layer.

11. The flexible display apparatus of claim 10 , wherein the third insulating layer comprises an inorganic material.

Assignees

• Samsung Display Co Ltd

Inventors

• Jeon Yujin
• Lee Wonse
• Kim Sukyoung
• Jang Donghyeon

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10F39/198

  Contact-type image sensors [CIS] · CPC title