Display device

Patent metadata

Field	Value
Publication number	US-10777628-B2
Application number	US-201715586073-A
Country	US
Kind code	B2
Filing date	May 3, 2017
Priority date	Jul 1, 2016
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

Disclosed is a display device, including: a substrate including a pixel area and a peripheral area; pixels provided in the pixel area as a plurality of pixel rows and a plurality of pixel columns; data lines configured to provide a data signal; scan lines configured to provide a scan signal; first power lines configured to provide a power source to the pixel columns; and a second power line connected to the first power lines and disposed in the peripheral area. A scan line connected to an ith pixel row may apply a scan signal to the ith pixel row, and a branched line branched from the scan line may apply an initialization signal to a kth pixel row (k≠i). A branched point of the scan line is disposed between a pixel most adjacent to the second power line of the ith pixel row and the second power line.

First claim

What is claimed is:

1. A display device, comprising:
a substrate including a pixel area and a peripheral area;
pixels provided in the pixel area of the substrate, and disposed in a plurality of pixel rows and a plurality of pixel columns;
data lines configured to provide a data signal to the pixel columns;
scan lines configured to provide a scan signal to the pixel rows;
emission control lines configured to provide an emission control signal to the pixel rows;
first power lines configured to provide a power source to the pixel columns; and
a second power line electrically connected to the first power lines and disposed in the peripheral area,
wherein a scan line connected to an i th pixel row (i is a natural number) applies a scan signal to the i th pixel row, and a branched line branched from the scan line applies an initialization signal to a k th pixel row (k is a natural number, and k≠i),
wherein a branched point of the scan line is disposed between the second power line and a leading pixel of the i th pixel row in a direction parallel to the pixel rows, and wherein the leading pixel of the i th pixel row is most adjacent to the second power line among pixels of the i th pixel row.

2. The display device of claim 1 , wherein the k th pixel row, to which the scan line applies the initialization signal, is an i+1 th pixel row.

3. The display device of claim 1 , wherein the pixel area includes a first pixel area and a second pixel area disposed on at least one side of the first pixel area.

4. The display device of claim 3 , wherein a width of a portion of the second pixel area decreases as the distance between the portion of second pixel area and the first pixel area increases.

5. The display device of claim 4 , wherein in the second pixel area, the branched point of the scan line connected to an l th pixel row (l is a natural number) is disposed between a data line connected to a leading pixel of a pixel row different from the l th pixel row and a leading pixel of the l th pixel row.

6. The display device of claim 5 , wherein the different pixel row is more adjacent to the first pixel area than the l th pixel row.

7. The display device of claim 5 , further comprising:
a scan driver provided in the peripheral area and connected to ends of the scan lines; and
an emission driver provided in the peripheral area and connected to ends of the emission control lines,
wherein the scan driver is disposed between the emission driver and the pixel area.

8. The display device of claim 7 , further comprising:
a first initialization power line provided in the peripheral area and configured to provide a first initialization power source to the pixel rows; and
a second initialization power line provided in the peripheral area and configured to provide a second initialization power source to the pixel rows.

9. The display device of claim 8 , wherein the first initialization power line and the second initialization power line are disposed between the scan driver and the pixel area.

10. The display device of claim 8 , wherein a voltage of a power source applied to the first initialization power line is higher than a voltage of a power source applied to the second initialization power line.

11. The display device of claim 10 , wherein the pixel includes an emitting device including an anode electrode, a cathode electrode, and an emission layer disposed between the anode electrode and the cathode electrode, and
the voltage of the power source applied to the second initialization power line is higher than a voltage of a power source applied to the cathode electrode.

12. The display device of claim 10 , wherein the voltage of the power source applied to the first initialization power line is lower than a voltage of the data signal applied to the data lines.

13. The display device of claim 3 , wherein in the first pixel area, lengths of branched lines branched from the scan lines are the same.

14. The display device of claim 13 , wherein in the second pixel area, a length of the branched line branched from the scan line connected to at least a part of the pixel rows is different from a length of a branched line branched from a scan line of another pixel row.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yang Wan
• Lee Jae Yong
• Kwon Sun Ja
• Park Hyun Ae
• Kim Byung Sun
• Lee Su Jin
• Park Hyung Jun
• Jeon Yu Jin

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G3/3233 Primary

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

• H10K59/131 Primary

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