IP Library Granted Patent US 11,730,020
Granted Patent B2
US 11,730,020 · App. 17/342,770 · Granted Aug 15, 2023

Display device

Inventors: Cha Dong Kim (Seoul, KR); Hee Na Kim (Hwaseong-si, KR); In Kyung Yoo (Hwaseong-si, KR); Sang Jin Lee (Pohang-si, KR); Chong Sup Chang (Hwaseong-si, KR)
Assignee: Samsung Display Co., Ltd.
H10K59/122H10K59/131H10K59/88
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Quick Facts
Patent No.
US 11,730,020
App. No.
17/342,770
Granted
Aug 15, 2023
Kind
B2
Abstract

A display device includes a first substrate including a display area and a non-display area, first banks spaced apart from each other in the display area and in the non-display area on the first substrate, electrodes spaced apart from each other on the first banks in the display area, dummy electrodes spaced apart from each other on the first banks in the non-display area, a first pattern between the electrodes in the display area, a second pattern between the dummy electrodes in the non-display area, a first light emitting element on the first pattern, a second light emitting element on the second pattern, contact electrodes respectively on the electrodes in the display area to contact one end of the first light emitting element, and dummy contact electrodes respectively on the dummy electrodes in the non-display area to contact one end of the second light emitting element.

Claims (55)

1. A display device comprising:

a first substrate comprising a display area and a non-display area;

first banks spaced apart from each other in the display area and in the non-display area on the first substrate;

electrodes spaced apart from each other on the first banks in the display area;

dummy electrodes spaced apart from each other on the first banks in the non-display area;

a first pattern between the electrodes in the display area;

a second pattern between the dummy electrodes in the non-display area;

a first light emitting element on the first pattern;

a second light emitting element on the second pattern;

contact electrodes respectively on the electrodes in the display area to contact one end of the first light emitting element; and

dummy contact electrodes respectively on the dummy electrodes in the non-display area to contact one end of the second light emitting element.

2. The display device of claim 1 , wherein the dummy electrodes, the second pattern, the second light emitting element, and the dummy contact electrodes are each comprised in at least one dummy pixel.

3. The display device of claim 2 , wherein the dummy pixel is in the non-display area, and is adjacent to at least one corner of the display area.

4. The display device of claim 3 , wherein the at least one dummy pixel comprises four dummy pixels that are respectively adjacent to four corners of the display area.

5. The display device of claim 2 , wherein the dummy electrodes comprise a first dummy electrode, and a second dummy electrode spaced apart from the first dummy electrode, and

wherein one end of the first dummy electrode and one end of the second dummy electrode overlaps the second light emitting element.

6. The display device of claim 5 , further comprising a lighting pad portion in the non-display area, and comprising a first dummy pad electrode, and a second dummy pad electrode spaced apart from the first dummy pad electrode.

7. The display device of claim 6 , further comprising:

a first dummy line connecting the first dummy pad electrode to the first dummy electrode; and

a second dummy line connecting the second dummy pad electrode to the second dummy electrode,

wherein the first and second dummy lines are between the lighting pad portion and the dummy pixel.

8. The display device of claim 1 , wherein at least one of the electrodes overlaps a transistor on the first substrate, and

wherein at least one of the dummy electrodes does not overlap the transistor.

9. The display device of claim 1 , wherein the first pattern covers one end of the electrodes, and

wherein the second pattern covers one end of the dummy electrodes.

10. The display device of claim 1 , wherein the first pattern is in plural number between the electrodes, and

wherein the second pattern is in plural number between the dummy electrodes.

11. The display device of claim 10 , wherein the electrodes and the dummy electrodes are to extend in one direction, and

wherein the second pattern is in plural number in a direction crossing the one direction.

12. A display device comprising:

a first substrate comprising a display area and a non-display area, the non-display area comprising a dummy pixel and a lighting pad portion,

wherein the dummy pixel comprises:

first banks on the first substrate and spaced apart from each other;

dummy electrodes on the first banks and spaced apart from each other;

a second pattern between the dummy electrodes;

a light emitting element on the second pattern; and

dummy contact electrodes respectively on the dummy electrodes to contact the light emitting element, and

wherein the lighting pad portion comprises:

dummy lines connected to the dummy electrodes on the first substrate; and

dummy pad electrodes on the dummy lines and connected to the dummy lines.

13. The display device of claim 12 , further comprising at least one signal line on the first substrate in the non-display area,

wherein the dummy lines and the at least one signal line are insulated from each other and cross each other.

14. The display device of claim 13 , wherein the dummy pixel does not overlap the at least one signal line.

15. The display device of claim 12 , wherein the dummy electrodes comprise a first dummy electrode, and a second dummy electrode spaced apart from the first dummy electrode,

wherein the dummy lines comprise a first dummy line, and a second dummy line spaced apart from the first dummy line, and

wherein the dummy pad electrodes comprise a first dummy pad electrode, and a second dummy pad electrode spaced apart from the first dummy pad electrode.

16. The display device of claim 15 , wherein the first dummy electrode is connected to the first dummy pad electrode through the first dummy line, and

wherein the second dummy electrode is connected to the second dummy pad electrode through the second dummy line.

17. The display device of claim 16 , further comprising at least one insulating layer between the first dummy pad electrode and the first dummy line, and between the second dummy pad electrode and the second dummy line,

wherein the first and second dummy pad electrodes are respectively connected to the first and second dummy lines through contact holes penetrating the insulating layer.

18. The display device of claim 12 , wherein the second pattern is in plural number between the dummy electrodes.

19. The display device of claim 18 , wherein the dummy electrodes extend in one direction, and

wherein the second pattern is in plural number in a direction crossing the one direction.

20. The display device of claim 12 , wherein the light emitting element comprises a first semiconductor layer, a second semiconductor layer, and at least one light emitting layer between the first semiconductor layer and the second semiconductor layer, and

wherein the first semiconductor layer, the second semiconductor layer, and the at least one light emitting layer are surrounded by an insulating film.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 9, 2021
From: KIM, CHA DONG; KIM, HEE NA; YOO, IN KYUNG; LEE, SANG JIN; CHANG, CHONG SUP
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 056483/0778 →
Priority Claims (1)
KR 10-2020-0074245 · Jun 18, 2020 · national
Continuity (1)
Related Publication 20210399069A1 · Dec 23, 2021
Cited By (1)
US 12,593,730