Display device

Patent metadata

Field	Value
Publication number	US-2021318583-A1
Application number	US-202117168226-A
Country	US
Kind code	A1
Filing date	Feb 5, 2021
Priority date	Apr 14, 2020
Publication date	Oct 14, 2021
Grant date	—

Abstract

Provided is a display device. The display device comprises: a substrate including a display area having a plurality of pixels and a non-display area, a plurality of data lines connected to each of the plurality of pixels and extending in a first direction, a plurality of first gate lines connected to each of the plurality of pixels and extending in a second direction crossing the first direction, a plurality of second gate lines extending along the first direction from one end of the display area to a line contact portion contacting each of the plurality of first gate lines, and a plurality of off voltage lines extending in a direction opposite to the first direction from the other end of the display area opposite to one end of the display area to a periphery of the line contact portion and insulated from the plurality of second gate lines.

First claim

What is claimed is:

1 . A display device, comprising:
a substrate including a display area having a plurality of pixels and a non-display area; a plurality of data lines connected to each of the plurality of pixels and extending in a first direction; a plurality of first gate lines connected to each of the plurality of pixels and extending in a second direction crossing the first direction; a plurality of second gate lines extending along the first direction from one end of the display area to a plurality of line contact portions, each of the plurality of first gate lines being connected to a corresponding second gate line of the plurality of second gate lines in the plurality of line contact portions; and a plurality of off voltage lines extending in a direction opposite to the first direction from the other end of the display area opposite to the one end of the display area to a periphery of the line contact portion and insulated from the plurality of second gate lines.

2 . The display device of claim 1 , wherein the off voltage line is disposed adjacent to a pixel electrode of a pixel connected to a first gate line which is connected to a second gate line through a line contact portion.

3 . The display device of claim 2 , wherein each of the pixels disposed adjacent to a plurality of off voltage lines among the plurality of pixels comprises:
a pixel electrode; a switching element connected to a corresponding first gate line among the plurality of first gate lines to supply a data voltage to the pixel electrode; and a first capacitor disposed between the pixel electrode and the off voltage line.

4 . The display device of claim 1 , further comprising a plurality of auxiliary electrodes disposed to overlap the plurality of second gate lines or the plurality of off voltage lines and a storage electrode disposed between the plurality of auxiliary electrodes,
wherein the second gate line disposed on the extension line in the first direction is spaced apart from the off voltage line with the storage electrode interposed therebetween.

5 . The display device of claim 4 , wherein the plurality of auxiliary electrodes and the storage electrode are formed of a first conductive layer, and the plurality of second gate lines and the plurality of off voltage lines are formed of a second conductive layer provided on the first conductive layer.

6 . The display device of claim 5 , wherein the plurality of auxiliary electrodes are connected to the plurality of second gate lines or the plurality of off voltage lines through a contact hole provided in a gate insulating film disposed between the first conductive layer and the second conductive layer.

7 . The display device of claim 1 , wherein the plurality of second gate lines have different lengths from each other depending on a position of the line contact portion.

8 . The display device of claim 1 , wherein the plurality of second gate lines sequentially supply gate signals from the longest second gate line to the shortest second gate line.

9 . The display device of claim 1 , wherein each of the plurality of off voltage lines receives a gate-off voltage turning off a switching element of each of the plurality of pixels.

10 . The display device of claim 1 , wherein the plurality of second gate lines include a plurality of first electrode patterns and a first auxiliary electrode connecting the plurality of first electrode patterns, and the plurality of off voltage lines include a plurality of second electrode patterns and a second auxiliary electrode connecting the plurality of second electrode patterns.

11 . The display device of claim 10 , wherein, among the plurality of first electrode patterns, a part of the first electrode pattern connected to the line contact portion extends to one side upper portion of the second auxiliary electrode and is spaced apart from the second electrode pattern in a plan view.

12 . The display device of claim 10 , further comprising: a storage electrode disposed between the plurality of first auxiliary electrodes,
wherein each of the plurality of first electrode patterns overlaps one of the plurality of first gate lines and the storage electrode.

13 . The display device of claim 12 , wherein each of the plurality of second electrode patterns overlaps one of the plurality of first gate lines and the storage electrode.

14 . The display device of claim 10 , wherein the first auxiliary electrode and the second auxiliary electrode are formed of a first conductive layer, and the plurality of first electrode patterns and the plurality of second electrode patterns are formed of a second conductive layer provided on the first conductive layer.

15 . The display device of claim 14 , wherein each of the plurality of first electrode patterns is connected to a corresponding first auxiliary electrode through a first contact hole provided in a gate insulating film between the first conductive layer and the second conductive layer and is connected to an adjacent first auxiliary electrode through a second contact hole provided in the gate insulating film.

16 . The display device of claim 15 , wherein each of the plurality of second electrode patterns is connected to a corresponding second auxiliary electrode through a third contact hole provided in the gate insulating film and is connected to an adjacent second auxiliary electrode through a fourth contact hole provided in the gate insulating film.

17 . The display device of claim 16 , wherein the line contact portion is formed through the gate insulating film and is disposed between the first contact hole and the third contact hole.

18 . The display device of claim 1 , further comprising a flexible film disposed at one side of the non-display area and a display driving circuit disposed on the flexible film,
wherein the display driving circuit supplies a data voltage to the plurality of data lines and supplies a gate signal to the plurality of second gate lines.

19 . The display device of claim 1 , wherein the line contact portion is disposed on an extension line connecting a lower end of the display area to an upper end of the display area.

20 . The display device of claim 1 , wherein the substrate includes a plurality of display areas, and the line contact portion of each of the plurality of display areas is disposed on an extension line connecting a lower end of a corresponding sub-display area to an upper end of the corresponding sub-display area.

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Dong Hee
• Lee Geun Ho
• Lee Yong Hee

Classifications

• G02F1/136213 Primary

  Storage capacitors associated with the pixel electrode · CPC title

• G02F1/136286 Primary

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/136227

  Through-hole connection of the pixel electrode to the active element through an insulation layer · CPC title

• G02F1/1357

  Electrode structure · CPC title

• G02F1/13629

  Multilayer wirings · CPC title