Display device

Patent metadata

Field	Value
Publication number	US-2018151663-A1
Application number	US-201715818476-A
Country	US
Kind code	A1
Filing date	Nov 20, 2017
Priority date	Nov 29, 2016
Publication date	May 31, 2018
Grant date	—

Abstract

A display device includes a substrate including a first pixel region, a second pixel region connected to the first pixel region and having a smaller area than the first pixel region, and a peripheral region surrounding the first and second pixel regions, a first pixel in the first pixel region, a second pixel in the second pixel region, a first line connected to the first pixel, a second line connected to the second pixel, an extending line extending to the peripheral region and connected to any one of the first and second lines, a dummy part overlapping with the extending line for compensating a difference between load values of the first and second lines, a first power line in the peripheral region, and a conductive pattern overlapping with at least one region of the dummy part, and electrically connected to the first power line.

First claim

What is claimed is:

1 . A display device comprising:
a substrate comprising a first pixel region, a second pixel region connected to the first pixel region and having a smaller area than the first pixel region, and a peripheral region surrounding the first pixel region and the second pixel region; a first pixel in the first pixel region; a second pixel in the second pixel region; a first line electrically connected to the first pixel; a second line electrically connected to the second pixel; an extending line extending to the peripheral region and connected to any one of the first line and the second line; a dummy part overlapping with the extending line, and for compensating a difference between a load value of the first line and a load value of the second line; a first power line in the peripheral region; and a conductive pattern overlapping with at least one region of the dummy part, and electrically connected to the first power line.

2 . The display device of claim 1 , wherein the dummy part comprises:
an eighth active pattern on the substrate; an insulating layer over the eighth active pattern, and defining a fourteenth contact hole through which a portion of the eighth active pattern is exposed; the extending line on the insulating layer; and a fourth contact line above the extending line, connected to the eighth active pattern through the fourteenth contact hole, and connected to the conductive pattern.

3 . The display device of claim 2 , wherein a fixed first voltage is applied to the first power line, and a voltage having the same level as the fixed first voltage is applied to the conductive pattern and the fourth contact line.

4 . The display device of claim 2 , further comprising a protective layer defining:
a fifteenth contact hole between the fourth contact line and the conductive pattern and exposing a portion of the fourth contact line therethrough; and a thirteenth contact hole exposing a portion of the first power line therethrough.

5 . The display device of claim 4 , wherein a first end of the conductive pattern is connected to the fourth contact line through the fifteenth contact hole, and
wherein a second end of the conductive pattern is connected to the first power line through the thirteenth contact hole.

6 . The display device of claim 2 , wherein the first power line comprises:
a first metal layer in the same layer as the fourth contact line; and a second metal layer on the first metal layer, wherein the display device further comprises an interlayer insulating layer defining:
a twelfth contact hole between the first and second metal layers and exposing a portion of the first metal layer therethrough; and
a fifteenth contact hole exposing a portion of the fourth contact line therethrough, and
wherein the second metal layer is electrically connected to the first metal layer through the twelfth contact hole.

7 . The display device of claim 6 , further comprising:
a bridge pattern between the fourth contact line and the conductive pattern; and a protective layer defining:
a sixteenth contact hole between the bridge pattern and the conductive pattern and exposing a portion of the bridge pattern therethrough; and
a thirteenth contact hole exposing a portion of the second metal layer therethrough.

8 . The display device of claim 7 , wherein a first end of the conductive pattern is connected to the bridge pattern through the sixteenth contact hole, and
wherein a second end of the conductive pattern is connected to the second metal layer through the thirteenth contact hole.

9 . The display device of claim 8 , wherein the sixteenth contact hole is in the protective layer to overlap with the fourteenth contact hole when viewed on a plane, and
wherein the thirteenth contact hole is in the protective layer to overlap with the twelfth contact hole when viewed on a plane.

10 . The display device of claim 2 , wherein the first line is a first scan line extending along a first direction on the substrate for providing a scan signal to the first pixel, and
wherein the second line is a second scan line extending along the first direction for providing a scan signal to the second pixel.

11 . The display device of claim 10 , wherein the second scan line extends to the peripheral region to be connected to the extending line.

12 . The display device of claim 11 , wherein the extending line is integrally formed with the second scan line.

13 . The display device of claim 10 , wherein a length of the first line is longer than that of the second line.

14 . The display device of claim 1 , further comprising:
a first light emitting control line connected to the first pixel; and a second light emitting control line connected to the second pixel.

15 . The display device of claim 14 , wherein the second light emitting control line extends to the peripheral region to be connected to the extending line.

16 . The display device of claim 10 , further comprising:
a data line in the first pixel region and in the second pixel region, and extending along a second direction crossing the first direction on the substrate; and a second power line spaced from the data line for receiving a fixed second voltage having a different level from a fixed first voltage.

17 . The display device of claim 16 , further comprising a third contact line between the dummy part and the second pixel in the peripheral region when viewed on a plane.

18 . The display device of claim 17 , wherein the third contact line extends from the second power line to be integrally formed with the second power line.

19 . The display device of claim 18 , wherein the third contact line and the dummy part are electrically separated from each other.

20 . The display device of claim 16 , wherein the second pixel comprises a transistor connected to the scan line, the data line, and the second power line, the transistor comprising:
a seventh active pattern on the substrate; a gate electrode on the seventh active pattern with a gate insulating layer interposed therebetween; and source and drain electrodes each connected to the seventh active pattern.

21 . The display device of claim 20 , wherein the seventh active pattern is in the same layer as the eighth active pattern of the dummy part.

22 . The display device of claim 20 , further comprising a light emitting device connected to the transistor and comprising:
an anode electrode connected to the transistor; an emitting layer on the anode electrode; and a cathode electrode on the emitting layer.

23 . The display device of claim 22 , wherein the conductive pattern is in the same layer as the anode electrode.

24 . The display device of claim 1 , wherein the peripheral region comprises:
a first peripheral region at the periphery of the first pixel region; a second peripheral region at the periphery of the second pixel region; and an additional peripheral region adjacent the first pixel region and the second peripheral region.

25 . The display device of claim 24 , wherein the dummy part is in the second peripheral region.

26 . The display device of claim 1 , wherein the substrate further comprises:
a third pixel region spaced from the second pixel region and connected to the first pixel region; and a third peripheral region surrounding the third pixel region.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yang Wan
• Park Hyung Jun
• Lee Jae Yong
• Kim Byung Sun
• Lee Su Jin

Classifications

• G09G2300/0413

  Details of dummy pixels or dummy lines in flat panels · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2320/0223

  Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes · CPC title

• H01L27/3262

  Electricity · mapped topic

• H01L27/3276 Primary

  Electricity · mapped topic