Display module and display device comprising the same

Patent metadata

Field	Value
Publication number	US-10910588-B2
Application number	US-201916401056-A
Country	US
Kind code	B2
Filing date	May 1, 2019
Priority date	Jun 15, 2018
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A display device includes a substrate including an upper surface, a lower surface, and side surfaces; a display element layer on the upper surface overlapping the display area; an encapsulation layer on the upper surface, the encapsulation layer including a main part that overlaps the display element layer and a protruding part that protrudes along a first direction from the main part and overlaps the bezel area; an input sensor on the main part; a first circuit board facing the main part, overlapping the bezel area, and on the upper surface; and a second circuit board on the protruding part, wherein each of the first circuit board and the second circuit board is adjacent to a first side surface among the side surfaces, and in the first direction, the protruding part is more adjacent to the first side surface than the main part.

First claim

What is claimed is:

1. A display device comprising:
a substrate comprising an upper surface, a lower surface, and side surfaces connecting the upper surface with the lower surface, wherein a display area and a bezel area adjacent to the display area are defined in the substrate;
a display element layer on the upper surface of the substrate, the display element layer overlapping the display area;
an encapsulation layer covering the display element layer, the encapsulation layer being located on the upper surface and comprising a main part being overlapping the display element layer, and a protruding part protruding along a first direction from the main part and overlapping the bezel area;
an input sensor on the main part;
a first circuit board facing the main part in the first direction, the first circuit board being further overlapping the bezel area and being located on the upper surface; and
a second circuit board on the protruding part,
wherein each of the first circuit board and the second circuit board is adjacent to a first side surface among the side surfaces, and
wherein in the first direction, the protruding part is more adjacent to the first side surface than the main part.

2. The display device of claim 1 , further comprising a polarizer overlapping the main part, the polarizer being on the input sensor.

3. The display device of claim 2 , wherein a distance in the first direction between the first circuit board and the polarizer is the same as a distance in the first direction between the second circuit board and the polarizer, in a plan view of the substrate.

4. The display device of claim 2 , further comprising:
a first pad portion between the first circuit board and the substrate, the first pad portion being electrically bonded to the first circuit board; and
a second pad portion on the protruding part, the second pad portion being electrically bonded to the second circuit board.

5. The display device of claim 4 , wherein the first circuit board is electrically connected to the display element layer through the first pad portion, and the second circuit board is electrically connected to the input sensor through the second pad portion.

6. The display device of claim 1 , wherein a distance in the first direction between the first side surface and the main part is longer than a distance in the first direction between the first side surface and the protruding part.

7. The display device of claim 1 , further comprising:
a polarizer on the encapsulation layer; and
an adhesive between the polarizer and the input sensor.

8. The display device of claim 1 , wherein the main part comprises a first part overlapping the display area, and a second part adjacent to the first part, the second part overlapping the bezel area, and
wherein the protruding part protrudes along the first direction from the second part.

9. The display device of claim 8 , wherein in a plan view of the encapsulation layer, one end of a second pad portion adjacent to the first side surface is parallel to a second direction crossing the first direction.

10. The display device of claim 8 , wherein in a plan view of the substrate, the first circuit board and the second circuit board do not overlap with each other.

11. The display device of claim 1 , wherein in a plan view of the substrate, the protruding part does not overlap the first circuit board.

12. The display device of claim 1 , further comprising a reinforcing member between the protruding part and the substrate.

13. The display device of claim 12 , wherein in a plan view of the substrate, at least a portion of the reinforcing member overlaps the second circuit board.

14. A display module comprising:
a substrate comprising an upper surface, a lower surface, and side surfaces connecting the upper surface with the lower surface, wherein a display area and a bezel area adjacent to the display area are defined in the substrate;
a display element layer on the upper surface of the substrate, the display element layer overlapping the display area;
an encapsulation layer covering the display element layer, the encapsulation layer being located on the upper surface and comprising a main part being overlapping the display element layer and a protruding part protruding along a first direction from the main part and overlapping the bezel area;
an input sensor on the main part; and
a first pad portion overlapping the bezel area, the first pad portion being located on the upper surface,
wherein in the first direction, the protruding part is more adjacent to a first side surface among the side surfaces than the main part, and
wherein the first pad portion is adjacent to the first side surface.

15. The display module of claim 14 , further comprising:
a second pad portion on the protruding part,
wherein the second pad portion is adjacent to the first side surface.

16. The display module of claim 15 , wherein the first pad portion is electrically connected to the display element layer, and the second pad portion is electrically connected to the input sensor.

17. The display module of claim 15 , further comprising a polarizer on the input sensor,
wherein in the first direction, a distance between the first pad portion and the polarizer is longer than a distance between the second pad portion and the polarizer.

18. The display module of claim 15 , further comprising a polarizer on the encapsulation layer.

19. The display module of claim 18 , further comprising an adhesive between the polarizer and the input sensor.

20. The display module of claim 14 , wherein the main part is integrally connected with the protruding part.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hyoung-Joo
• Kim Yunsoo
• Lee Jun-Hee
• Roh Cheollae
• Han Gyoowan

Classifications

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• G06F1/1626 Primary

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title