Display device

Patent metadata

Field	Value
Publication number	US-2018366529-A1
Application number	US-201815923507-A
Country	US
Kind code	A1
Filing date	Mar 16, 2018
Priority date	Jun 19, 2017
Publication date	Dec 20, 2018
Grant date	—

Abstract

A display panel may include a detection line overlapped with a non-display region, detection pads connected to the detection line, and an input line connecting an input pad of the detection pads to the detection line. The detection line may include a first portion, which is provided at a level different from a level of the input line and includes an end connected to the input line through a first contact hole in a first contact region, and a second portion, which is provided at a level different from the level of the first portion and is connected to the first portion through a second contact hole in a second contact region. A distance between the first and second portions in a non-contact region may be less than a distance between the first contact hole and the second portion.

First claim

What is claimed is:

1 . A display device, comprising a display panel including a display region and a non-display region enclosing the display region, when viewed in a plan view,
wherein the display panel comprises: an organic light emitting device provided in the display region; circuit devices configured to drive the organic light emitting device; a detection line overlapped with the non-display region; detection pads connected to the detection line; and an input line connecting an input pad of the detection pads to the detection line, wherein the detection line comprises: a first line portion provided at a level different from a level of the input line, the first line portion including an end portion, which is connected to the input line through a first interconnection contact hole in a first contact region; and a second line portion provided at a level different from the level of the first line portion and connected to the first line portion through a second interconnection contact hole in a second contact region, wherein, when viewed in the plan view, the first line portion is provided closer to the display region than the second line portion, and a distance between the first line portion and the second line portion in a non-contact region is less than a distance between the first interconnection contact hole and the second line portion.

2 . The display device of claim 1 , wherein the distance between the first line portion and the second line portion in the non-contact region is less than a distance between the second interconnection contact hole and the second line portion.

3 . The display device of claim 1 , wherein the display panel further comprises an output line connecting an output pad of the detection pads to the detection line, and
the second line portion includes an end portion, which is connected to the first line portion, and an opposite end portion, which is connected to the output line.

4 . The display device of claim 3 , wherein the second line portion and the output line are provided in the form of a single body.

5 . The display device of claim 3 , wherein, when viewed in a plan view, at least a portion of the detection line has a bent shape a plurality of times in the form of a branch.

6 . The display device of claim 3 , wherein the input line and the output line are provided at a same level as the level of the second line portion.

7 . The display device of claim 3 , further comprising a third line portion connecting the output line and the second line portion to each other,
wherein an end of the third line portion is connected to an opposite end of the second line portion through a third interconnection contact hole, and an opposite end of the third line portion is connected to the output line through a fourth interconnection contact hole.

8 . The display device of claim 7 , wherein the first line portion is provided at a same level as a level of the third line portion.

9 . The display device of claim 7 , wherein, when viewed in a plan view, the third line portion is provided closer to the display region than the second line portion.

10 . The display device of claim 3 , wherein at least one of the first and second interconnection contact holes is provided in plural.

11 . The display device of claim 10 , wherein the first interconnection contact hole includes a plurality of first interconnection contact holes, some of which have different sizes from each other.

12 . The display device of claim 10 , wherein the second interconnection contact hole includes a plurality of second interconnection contact holes, some of which have different sizes from each other.

13 . The display device of claim 3 , wherein the non-display region comprises:
a first non-display region enclosing the display region, the detection line being provided in the first non-display region; and a second non-display region connected to the first non-display region, the second non-display region including a pad region, on which the detection pads are provided, and a signal line region, on which the input line and output line are provided.

14 . The display device of claim 13 , wherein the detection line is provided in the first non-display region and the signal line region of the second non-display region, and
the input line and the output line are connected to the detection line, in the signal line region.

15 . The display device of claim 3 , wherein the non-display region comprises a bending region, and
the display panel is bent about a bending axis in the bending region.

16 . The display device of claim 3 , wherein each of the detection line, the input line, and the output line is provided in plural,
wherein each of the detection lines comprises: a first detection line provided adjacent to a side region of the display region; and a second detection line provided adjacent to an opposite side region of the display region, wherein the first and second detection lines are connected to corresponding ones of the input and output lines.

17 . The display device of claim 3 , wherein the circuit devices comprise:
a first transistor including a first input electrode, a first output electrode, a first control electrode, and a first semiconductor pattern; and a second transistor including a second input electrode, a second output electrode, a second control electrode, and a second semiconductor pattern, wherein the first and second control electrodes are electrically disconnected from the first and second semiconductor patterns by at least one insulating layer, the first control electrode overlaps with the first semiconductor pattern, when viewed in a plan view, and the second control electrode overlaps with the second semiconductor pattern, when viewed in a plan view.

18 . The display device of claim 17 , wherein the first line portion is provided at a same level as a level of the first input electrode and the first output electrode.

19 . The display device of claim 17 , wherein the second line portion, the first control electrode, and the second control electrode are provided at a same level.

20 . The display device of claim 19 , wherein the second control electrode is provided on the second semiconductor pattern.

21 . The display device of claim 19 , wherein the first control electrode is provided below the first semiconductor pattern.

22 . The display device of claim 20 , wherein the circuit devices further comprise an upper electrode, which is provided on, and electrically disconnected from, the second control electrode,
when viewed in a plan view, the upper electrode is provided to overlap with the second control electrode to define a capacitor.

23 . The display device of claim 17 , wherein the second line portion is provided at a same level as a level of the second control electrode, and
the input line and the output line are provided at a same level as a level of the first control electrode and the upper electrode.

24 . The display device of claim 1 , wherein the distance between the first interconnection contact hole and the second line portion and a distance between the second interconnection contact hole and the second line portion is larger than or equal to 50 μm.

25 . A display device, comprising a display panel including a display region and a non-display region enclosing the display region, when viewed in a plan view,
wherein the disp

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Wonse
• Kim Hyunwoong
• Moon Joong-Soo
• Shin Ae
• Lee Ji-Eun
• Kim Kwangmin
• Lee Seungkyu

Classifications

• G09G3/3266

  Details of drivers for scan electrodes · CPC title

• G09G3/3225

  using an active matrix · CPC title

• G09G3/006

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title

• G09G2330/12

  Test circuits or failure detection circuits included in a display system, as permanent part thereof · CPC title

• H10P74/273 Primary

  Interconnections for measuring or testing, e.g. probe pads · CPC title