Display apparatus having zero bezel by bending bezel area

Patent metadata

Field	Value
Publication number	US-11910644-B2
Application number	US-202117510727-A
Country	US
Kind code	B2
Filing date	Oct 26, 2021
Priority date	Oct 31, 2017
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A display apparatus includes a first substrate having a display area and a non-display area; a pixel array layer provided on the display area of the first substrate; and a second substrate provided on the pixel array layer and having first and second grooves at side edges of the second substrate, wherein the first and second grooves are respectively located at first and second bending areas to facilitate a curvature radius of the end portions of the display and achieve a zero bezel display.

First claim

What is claimed is:

1. A display apparatus comprising:
a first substrate having a display area and a non-display area;
a pixel array layer provided on the display area of the first substrate; and
a second substrate provided on the pixel array layer and having first and second grooves at side edges of the second substrate,
wherein the first and second grooves are respectively located at first and second bending areas and are disposed between a boundary of a non-bending area and the first bending area and an end portion of the second substrate, and
wherein each of the first and second bending areas has a width greater than that of the end portion.

2. The display apparatus of claim 1 , further comprising a passivation layer covering the first groove and the second groove.

3. The display apparatus of claim 2 , wherein the passivation layer covers the first bending area including the first groove and the second bending area including the second groove.

4. The display apparatus of claim 2 , wherein the passivation layer covers an entire surface of the second substrate including the first and second grooves.

5. A display apparatus comprising:
a base layer;
a first cover layer covering a first end of the base layer and a second cover layer covering a second end of the base layer;
a pixel array layer disposed on the base layer extended to the first cover layer and the second cover layer; and
a first substrate disposed on the pixel array layer and having a first end adjacent to the first cover layer, a second end adjacent to the second cover layer, the first end having a first groove and the second end having a second groove,.
wherein the first and second grooves are disposed between a boundary of a non-bending area and the first bending area and an end portion of the second substrate, and
wherein each of the first and second bending areas has a width greater than that of the end portion.

6. The display apparatus of claim 5 , wherein the base layer has a first end portion and a second end portion, and the first end portion has a curvature radius that includes the first end of the first substrate and the second end portion having a curvature radius that includes the second end of the first substrate.

7. The display apparatus of claim 5 , further comprising a passivation layer covering the first groove and a second passivation layer covering the second groove.

8. The display apparatus of claim 5 , wherein the base layer includes a light transmittance layer, a flexible substrate disposed on the light transmittance layer and a buffer layer disposed on the flexible substrate.

9. A display apparatus comprising:
a first substrate where a display area and a non-display area surrounding the display area are defined;
a light transmittance layer attached to the first substrate;
a pixel array layer disposed on the first substrate;
a second substrate disposed on the pixel array layer and respectively having first and second grooves at first and second end portions of the second substrate, wherein the first and second grooves are respectively located at first and second bending areas; and
first and second cover layers disposed on the non-display area of the first substrate and adjoining lateral sides of the second substrate,
wherein the first and second grooves are disposed between a boundary of a non-bending area and the first bending area and an end portion of the second substrate, and
wherein each of the first and second bending areas has a width greater than that of the end portion.

10. The display apparatus of claim 9 , further comprising a passivation layer covering the first groove and the second groove.

11. The display apparatus of claim 10 , wherein the passivation layer covers the first bending area including the first groove and the second bending area including the second groove.

12. The display apparatus of claim 10 , wherein the passivation layer covers an entire surface of the second substrate including the first and second grooves.

13. The display apparatus of claim 10 , wherein the passivation layer includes one or more inorganic films deposited alternately.

14. The display apparatus of claim 10 , wherein the passivation layer has a thickness thinner than the second substrate.

15. The display apparatus of claim 9 , further comprising a buffer layer disposed between the first substrate and the pixel array layer.

16. The display apparatus of claim 15 , wherein the buffer layer includes one or more inorganic films.

17. The display apparatus of claim 9 , wherein the pixel array layer includes scan lines, data lines, driving power lines, a pixel driving circuit and a light emitting diode layer.

18. The display apparatus of claim 9 , wherein the pixel array layer overlaps with the display area defined in the first substrate.

19. The display apparatus of claim 9 , wherein the first and second bending areas overlap with an edge of the display area defined in the first substrate.

20. The display apparatus of claim 9 , wherein the light transmittance layer is attached to the first substrate by a transparent adhesive-layer that includes an optically clear resin (OCR) or an optically clear adhesive (OCA).

Assignees

• Lg Display Co Ltd

Inventors

• Lee Moonsun
• Kim Eunah

Classifications

• H10K2102/351

  Thickness · CPC title

• G06F1/1652

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G09F9/301 Primary

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

• H10K59/87 Primary

  Passivation; Containers; Encapsulations · CPC title

• H10K2102/311

  Flexible OLED · CPC title