Display device

Patent metadata

Field	Value
Publication number	US-12127448-B2
Application number	US-202117506043-A
Country	US
Kind code	B2
Filing date	Oct 20, 2021
Priority date	Dec 7, 2020
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

A display device includes: pixel circuits defining pixel circuit rows each extending in a first direction and pixel circuit columns each extending in a second direction crossing the first direction; active patterns disposed to correspond to the pixel circuits, respectively; a horizontal diode initialization voltage line which transmits a diode initialization voltage and extends in the first direction; and a vertical diode initialization voltage line extending in the second direction and connected to the horizontal diode initialization voltage line. Each of the active patterns includes first and second diode initialization active regions to which the diode initialization voltage is applied. First active patterns of the plurality of the active patterns corresponding to one of the pixel circuit rows are connected to each other. A first end of one of the first and second diode initialization active regions contact the vertical diode initialization voltage line.

First claim

What is claimed is:

1. A display device, comprising:
a plurality of pixel circuits defining a plurality of pixel circuit rows each extending in a first direction and a plurality of pixel circuit columns each extending in a second direction crossing the first direction;
a plurality of active patterns disposed to correspond to the plurality of pixel circuits, respectively;
a horizontal diode initialization voltage line which transmits a diode initialization voltage and extends in the first direction; and
a vertical diode initialization voltage line extending in the second direction and connected to the horizontal diode initialization voltage line,
wherein each of the plurality of active patterns includes first and second diode initialization active regions to which the diode initialization voltage is applied,
wherein first active patterns of the plurality of active patterns corresponding to one of the plurality of pixel circuit rows are connected to each other, and
wherein a first end of one of the first and second diode initialization active regions contacts the vertical diode initialization voltage line.

2. The display device of claim 1 , wherein a first end of another one of the first and second diode initialization active regions contacts a connection pattern contacting the horizontal diode initialization voltage line.

3. The display device of claim 2 , wherein a second end of the first diode initialization active region and a second end of the second diode initialization active region are connected to an anode electrode of a light emitting diode.

4. The display device of claim 1 , wherein second active patterns of the plurality of active patterns corresponding to one of the plurality of pixel circuit columns are separated from each other.

5. The display device of claim 1 , wherein a first end of a second diode initialization active region of an active pattern in an M-th pixel circuit column contacts the vertical diode initialization voltage line, where M is a natural number, and
wherein a first end of a first diode initialization active region of the active pattern in the M-th pixel circuit column contacts a first connection pattern contacting the horizontal diode initialization voltage line.

6. The display device of claim 5 , wherein a first end of a first diode initialization active region of an active pattern in an (M+1)-th pixel circuit column contacts the vertical diode initialization voltage line.

7. The display device of claim 6 , wherein a first end of a second diode initialization active region of the active pattern in the (M+1)-th pixel circuit column contacts a second connection pattern contacting the horizontal diode initialization voltage line.

8. The display device of claim 1 , wherein each of the plurality of active patterns further includes a driving initialization active region to which a driving initialization voltage is applied, and
wherein a first diode initialization active region and a second diode initialization active region of an active pattern in an N-th pixel circuit row and an M-th pixel circuit column are disposed with a driving initialization active region of an active pattern in an (N+1)-th pixel circuit row and the M-th pixel circuit column interposed therebetween in a plan view, where M and N are natural numbers.

9. The display device of claim 8 , further comprising a plurality of initialization control lines each extending in the first direction and disposed to correspond to a corresponding pixel circuit row of the plurality of pixel circuit rows,
wherein an initialization control line in the (N+1)-th pixel row overlaps the driving initialization active region of the active pattern in the (N+1)-th pixel circuit row and the M-th pixel circuit column and the first and second diode initialization active regions of the active pattern in the N-th pixel circuit row and the M-th pixel circuit column in the plan view.

10. The display device of claim 8 , wherein the driving initialization active region of the active pattern in the (N+1)-th pixel circuit row and the M-th pixel circuit column is disposed in the first direction from the first diode initialization active region of the active pattern in the N-th pixel circuit row and the M-th pixel circuit column, and
wherein the second diode initialization active region of the active pattern in the N-th pixel circuit row and the M-th pixel circuit column is disposed in the first direction from the driving initialization active region of the active pattern in the (N+1)-th pixel circuit row and the M-th pixel circuit column.

11. A display device, comprising:
a first pixel circuit;
a second pixel circuit disposed in a first direction from the first pixel circuit;
a third pixel circuit disposed in a second direction from the first pixel circuit, wherein the second direction crosses the first direction;
first to third active patterns disposed to correspond to the first to third pixel circuits, respectively;
a horizontal diode initialization voltage line which transmits a diode initialization voltage and extends in the first direction; and
a vertical diode initialization voltage line extending in the second direction and connected to the horizontal diode initialization voltage line,
wherein each of the first to third active patterns includes first and second diode initialization active regions to which the diode initialization voltage is applied,
wherein the first active pattern and the second active pattern are connected to each other, and
wherein a first end of one of the first and second diode initialization active regions contacts the vertical diode initialization voltage line.

12. The display device of claim 11 , wherein a first end of another one of the first and second diode initialization active regions contacts a connection pattern contacting the horizontal diode initialization voltage line.

13. The display device of claim 12 , wherein a second end of the first diode initialization active region and a second end of the second diode initialization active region are connected to an anode electrode of a light emitting diode.

14. The display device of claim 11 , wherein the first active pattern and the third active pattern are separated from each other.

15. The display device of claim 11 , wherein a first end of the second diode initialization active region of the first active pattern contacts the vertical diode initialization voltage line, and
wherein a first end of the first diode initialization active region of the first active pattern contacts a first connection pattern contacting the horizontal diode initialization voltage line.

16. The display device of claim 15 , wherein a first end of the first diode initialization active region of the second active pattern contacts the vertical diode initialization voltage line.

17. The display device of claim 16 , wherein a first end of the second diode initialization active region of the second active pattern contacts a second connection pattern contacting the horizontal diode initialization voltage line.

18. The display device of claim 11 , wherein each of the first to third active patterns further includes a driving initialization active region to which a driving initialization voltage is applied, and
wherein the first diode initialization active region and the second diode initialization active region of the first active pattern are disposed with the driving initialization active region of the third active pattern interposed therebetween in a plan view.

19. A display device, comprising:
a first

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Junwon
• Kim Jaewon
• Min Junyoung

Classifications

• H10K59/131

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

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2330/00

  Aspects of power supply; Aspects of display protection and defect management · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title