Display device

Patent metadata

Field	Value
Publication number	US-2021217841-A1
Application number	US-202017036838-A
Country	US
Kind code	A1
Filing date	Sep 29, 2020
Priority date	Jan 14, 2020
Publication date	Jul 15, 2021
Grant date	—

Abstract

A display device includes a base layer including an active area and a peripheral area outside the active area, a circuit element layer including a pixel in the active area of the base layer, a light emitting element layer including light emitting elements on the circuit element layer, a thin film encapsulation layer covering the light emitting element layer and including an organic layer, and an input detection layer on the thin film encapsulation layer and including a detection electrode and a detection wire connected to the detection electrode. The circuit element layer includes a connection wire overlapping the detection wire in the peripheral area, and a contact part to connect the detection wire and the connection wire in the peripheral area. The contact part is spaced apart from the organic layer of the thin film encapsulation layer on a plane.

First claim

What is claimed is:

1 . A display device comprising:
a base layer including an active area and a peripheral area outside the active area; a circuit element layer including a pixel in the active area of the base layer; a light emitting element layer including light emitting elements on the circuit element layer; a thin film encapsulation layer covering the light emitting element layer and including an organic layer; and an input detection layer on the thin film encapsulation layer and including a detection electrode and a detection wire electrically connected to the detection electrode, wherein the circuit element layer comprises: a connection wire overlapping the detection wire in the peripheral area; and a contact part electrically connecting the detection wire and the connection wire in the peripheral area, wherein the contact part is spaced apart from the organic layer of the thin film encapsulation layer on a plane.

2 . The display device of claim 1 , wherein the thin film encapsulation layer further comprises:
a first inorganic layer between the light emitting element layer and the organic layer; and a second inorganic layer covering the organic layer.

3 . The display device of claim 2 ,
wherein at least a portion of the contact part is in a contact hole defined through the second inorganic layer, wherein the detection wire is electrically connected to the connection wire through the contact hole.

4 . The display device of claim 3 , further comprising a dam part on the circuit element layer and surrounding the active area,
wherein the second inorganic layer covers the dam part.

5 . The display device of claim 4 , wherein the contact part is outside the dam part.

6 . The display device of claim 1 , wherein the detection electrode comprises:
a first detection electrode; and a second detection electrode electrically insulated from the first detection electrode to form a capacitance.

7 . The display device of claim 6 , wherein the detection wire is electrically connected to the first detection electrode.

8 . The display device of claim 6 ,
wherein the first detection electrode comprises first detection patterns and a first connection pattern electrically connecting the first detection patterns, and wherein the second detection electrode comprises second detection patterns and a second connection pattern electrically connecting the second detection patterns.

9 . The display device of claim 6 , wherein the input detection layer comprises:
a first conductive layer on the thin film encapsulation layer; a first input insulating layer on the first conductive layer; and a second conductive layer on the first input insulating layer, wherein the detection wire is on the second conductive layer, and the first conductive layer and the second conductive layer are in contact with each other.

10 . The display device of claim 1 ,
wherein the circuit element layer further comprises a driving signal wire in the peripheral area of the base layer to supply a driving signal to the pixel, and wherein the circuit element layer comprises a plurality of connection wires and the plurality of connection wires are spaced apart from each other on the same layer as the driving signal wire.

11 . The display device of claim 1 ,
wherein the circuit element layer further comprises a driving signal wire in the peripheral area of the base layer to supply a driving signal to the pixel, and wherein the connection wire overlaps the driving signal wire in a different layer on a plane.

12 . A display device comprising:
a base layer including an active area and a peripheral area outside the active area; a circuit element layer including a pixel in the active area of the base layer; a light emitting element layer including light emitting elements on the circuit element layer; a thin film encapsulation layer covering the light emitting element layer and including an organic layer; and an input detection layer on the thin film encapsulation layer, and including a detection electrode and a detection wire electrically connected to the detection electrode, wherein the circuit element layer comprises: a driving signal wire in the peripheral area of the base layer to supply a driving signal to the pixel; a connection wire overlapping the driving signal wire in the peripheral area; and a contact part connecting the detection wire and the connection wire in the peripheral area, and wherein the contact part is spaced apart from the organic layer of the thin film encapsulation layer on a plane.

13 . The display device of claim 12 , wherein the thin film encapsulation layer comprises:
a first inorganic layer between the light emitting element layer and the organic layer; and a second inorganic layer covering the organic layer.

14 . The display device of claim 13 ,
wherein at least a portion of the contact part is in a contact hole defined through the second inorganic layer, and wherein the detection wire is electrically connected to the connection wire through the contact hole.

15 . The display device of claim 14 , further comprising a dam part on the circuit element layer and surrounding the active area,
wherein the second inorganic layer covers the dam part.

16 . The display device of claim 15 , wherein the contact part is outside the dam part.

17 . The display device of claim 12 , wherein the detection electrode comprises:
a first detection electrode; and a second detection electrode electrically insulated from the first detection electrode to form a capacitance.

18 . The display device of claim 17 , wherein the detection wire is electrically connected to the first detection electrode.

19 . The display device of claim 18 ,
wherein the first detection electrode comprises first detection patterns and a first connection pattern electrically connecting the first detection patterns, and wherein the second detection electrode comprises second detection patterns and a second connection pattern electrically connecting the second detection patterns.

20 . The display device of claim 18 , wherein the input detection layer comprises:
a first conductive layer on the thin film encapsulation layer; a first input insulating layer on the first conductive layer; and a second conductive layer on the first input insulating layer, wherein the detection wire is on the second conductive layer, and the first conductive layer and the second conductive layer are in contact with each other.

Assignees

• Samsung Display Co Ltd

Inventors

• Kang Ki Nyeng
• Kim Hyun
• Song Seungmin
• Yi Minseong
• Lee Sanghoon
• Ji Seonbeom
• Hong Jung Eun

Classifications

• H10K2102/311

  Flexible OLED · CPC title

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• H10K59/88

  Dummy elements, i.e. elements having non-functional features · CPC title