Display device

Patent metadata

Field	Value
Publication number	US-2021083037-A1
Application number	US-202017002705-A
Country	US
Kind code	A1
Filing date	Aug 25, 2020
Priority date	Sep 18, 2019
Publication date	Mar 18, 2021
Grant date	—

Abstract

A display device may include a substrate, pixels, a first common voltage line, an outer common voltage trunk line, a first outer common voltage line, and a second outer common voltage line. The substrate may include a display area and a non-display area. The pixels may be disposed on the display area. The first common voltage line may be at least partially disposed on the display area. The outer common voltage trunk line may be disposed on the non-display area, may be electrically connected through the first common voltage line to the pixels, and may include a groove. The first outer common voltage line may protrude from the outer common voltage trunk line. The second outer common voltage line may protrude from the outer common voltage trunk line. The groove may be disposed between the second outer common voltage line and the first common voltage line.

First claim

What is claimed is:

1 . A display device comprising:
a substrate including a display area and a non-display area; pixels disposed on the display area; a first common voltage line at least partially disposed on the display area; an outer common voltage trunk line disposed on the non-display area, electrically connected through the first common voltage line to the pixels, and comprises a groove; a first outer common voltage line protruding from the outer common voltage trunk line; and a second outer common voltage line protruding from the outer common voltage trunk line, wherein the groove is disposed between the second outer common voltage line and the first common voltage line.

2 . The display device of claim 1 , wherein a lengthwise direction of the second outer common voltage line is perpendicular to a lengthwise direction of the groove.

3 . The display device of claim 1 , wherein a shortest electrical path between the first common voltage line and the first outer common voltage line is shorter than a shortest electrical path between the first common voltage line and the second outer common voltage line.

4 . The display device of claim 1 , further comprising an outer initialization voltage line disposed between the outer common voltage trunk line and the display area and electrically connected to at least some of the pixels.

5 . The display device of claim 1 , further comprising:
a driving voltage line at least partially disposed on the display area; and an outer driving voltage trunk line disposed on the non-display area, disposed between a first end of the outer common voltage trunk line and a second end of the outer common voltage trunk line, electrically insulated from the outer common voltage trunk line, and electrically connected to at least some of the pixels through the driving voltage line.

6 . The display device of claim 5 , wherein the outer common voltage trunk line comprises a first section, a second section, a third section, a fourth section, and a fifth section, wherein the first section is opposite the second section in a first direction, wherein the third section is opposite each of the fourth section and the fifth section in a second direction different from the first direction, wherein the display area is disposed between the first section and the second section in the first direction, and wherein the display area is disposed between the third section and each of the fourth section and the fifth section in the second direction.

7 . The display device of claim 6 , wherein some of the pixels overlap the first common voltage line and do not overlap the driving voltage line.

8 . The display device of claim 7 , further comprising a second common voltage line electrically connected to the first common voltage line and crossing the first common voltage line.

9 . The display device of claim 6 , wherein the first common voltage line is disposed between a first subset of the pixels and a second subset of the pixels, and wherein a lengthwise direction of the first common voltage line is parallel to a lengthwise direction of the driving voltage line.

10 . The display device of claim 9 , further comprising a second common voltage line electrically connected to the first common voltage line and crossing the first common voltage line.

11 . The display device of claim 5 , wherein the outer common voltage trunk line comprises a first section and a second section, wherein the second section is opposite the first section, and wherein two opposite sides of the display area are disposed between the first section of the outer common voltage trunk line and the second section of the outer common voltage trunk line.

12 . The display device of claim 11 , wherein some of the pixels overlap the first common voltage line and do not overlap the driving voltage line.

13 . The display device of claim 12 , further comprising a second common voltage line electrically connected to the first common voltage line and crossing the first common voltage line.

14 . The display device of claim 11 , wherein the first common voltage line is disposed between a first subset of the pixels and a second subset of the pixels, and wherein a lengthwise direction of the first common voltage line is parallel to a lengthwise direction of the driving voltage line.

15 . The display device of claim 14 , further comprising a second common voltage line electrically connected to the first common voltage line and crossing the first common voltage line.

16 . A display device comprising:
a substrate including a display area and a non-display area; pixels disposed on the display area; a first common voltage line at least partially disposed on the display area; a first outer common voltage trunk line disposed on the non-display area and electrically connected through the first common voltage line to at least a first subset of the pixels; a second outer common voltage trunk line spaced from the first outer common voltage trunk line in at least a first direction and disposed on the non-display area, wherein a voltage transmitted by the second outer common voltage trunk line is equal to a voltage transmitted by the first outer common voltage trunk line when the display device is in operation; a first outer common voltage line protruding from the first outer common voltage trunk line in a second direction and disposed on the non-display area, wherein the second direction is different from the first direction; and a second outer common voltage line protruding from the second outer common voltage trunk line and disposed on the non-display area.

17 . The display device of claim 16 , wherein each of a lengthwise direction of the first outer common voltage line, a lengthwise direction of the second outer common voltage line, and a lengthwise direction of the first common voltage lines is perpendicular to the first direction.

18 . The display device of claim 16 , wherein a first side of the first outer common voltage trunk line is opposite a first side of the second outer common voltage trunk line in the first direction, and wherein a second side of the first outer common voltage trunk line is opposite a second side of the second outer common voltage trunk line in the second direction.

19 . The display device of claim 16 , wherein the total number of common voltage lines directly connected to the first outer common voltage trunk line is larger than the total number of common voltage lines directly connected to the second outer common voltage trunk line.

20 . The display device of claim 17 , further comprising an outer initialization voltage line disposed between the second outer common voltage trunk line and the display area and electrically connected to at least some of the pixels.

21 . The display device of claim 16 , further comprising:
a third outer common voltage trunk line spaced from the first outer common voltage trunk line in the first direction, wherein the first outer common voltage trunk line is disposed between the second outer common voltage trunk line and the third outer common voltage trunk line; a driving voltage line at least partially disposed on the display area; and an outer driving voltage trunk line disposed on the non-display area, disposed between the first outer common voltage trunk line and the third outer common voltage trunk line, electrically insulated from each of the first outer common voltage trunk line and the third outer common voltage trunk line, and electrically c

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Tae Hoon
• Kwak Won Kyu

Classifications

• H10K59/8794

  Arrangements for heating and cooling · CPC title

• H10D89/105 Primary

  adapted for thermal considerations · CPC title

• H10K59/131 Primary

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

• G09G3/3258

  with pixel circuitry controlling the voltage across the light-emitting element · CPC title

• G09G3/3266

  Details of drivers for scan electrodes · CPC title