Display device

Patent metadata

Field	Value
Publication number	US-11515383-B2
Application number	US-202017109000-A
Country	US
Kind code	B2
Filing date	Dec 1, 2020
Priority date	Feb 21, 2020
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A display device includes a substrate comprising an active area and a non-active area a first data conductive layer disposed on the substrate and including signal wires connected to pixels, a first insulating layer disposed on the first data conductive layer, a second data conductive layer disposed on the first insulating layer and including a connection wire connected to some of the signal wires and dummy wiring patterns disconnected the signal wires, a second insulating layer disposed on the second data conductive layer and a pixel electrode disposed on the second insulating layer. The dummy wiring patterns are separated from one another at a disconnection, the second insulating layer includes a second portion disposed on the disconnection and a third portion disposed on at least a portion of the connection wire, and thicknesses thereof are different from each other.

First claim

What is claimed is:

1. A display device comprising:
a plurality of pixels;
a substrate comprising an active area in which the plurality of pixels is disposed and a non-active area disposed on a side of the active area;
a first data conductive layer disposed on the substrate and comprising a plurality of signal wires connected to the plurality of pixels;
a first insulating layer disposed on the first data conductive layer;
a second data conductive layer disposed on the first insulating layer and comprising a connection wire connected to some of the plurality of signal wires and a plurality of dummy wiring patterns that is disconnected from the plurality of signal wires;
a second insulating layer disposed on the second data conductive layer; and
a pixel electrode disposed on the second insulating layer,
wherein the plurality of dummy wiring patterns is separated from one another at a disconnection,
wherein the second insulating layer comprises a first portion disposed on the dummy wiring patterns, a second portion disposed on the disconnection, and a third portion disposed on at least a portion of the connection wire, and
wherein a second thickness of the second portion is different from a third thickness of the third portion.

2. The display device of claim 1 , wherein an upper surface of the second insulating layer has uneven patterns formed at the second portion and the third portion.

3. The display device of claim 2 , wherein the third thickness of the third portion is smaller than the second thickness of the second portion.

4. The display device of claim 3 ,
wherein the second thickness of the second portion is equal to a first thickness of the first portion, and
wherein the third portion has a dummy groove that is recessed from the upper surface of the second insulating layer.

5. The display device of claim 4 ,
wherein the second portion of the second insulating layer comprises a recess formed on the upper surface, and
wherein a depth of the dummy groove is equal to a depth of the recess.

6. The display device of claim 4 , further comprising:
an emissive layer disposed on the pixel electrode; and
a common electrode disposed on the emissive layer,
wherein the dummy groove overlaps the emissive layer in a thickness direction.

7. The display device of claim 4 ,
wherein the first thickness of the first portion is equal to the third thickness of the third portion, and
wherein the second portion has a protruding pattern formed on the upper surface.

8. The display device of claim 4 ,
wherein each of the second portion and the third portion of the second insulating layer comprise a protruding pattern formed on the upper surface, and
wherein the third thickness of the third portion is greater than the first thickness of the first portion.

9. The display device of claim 1 , wherein the first portion is disposed on a portion of the connection wire and is connected to the third portion.

10. The display device of claim 1 ,
wherein at least a portion of the connection wire is disposed in the non-active area and connected to some of the plurality of signal wires passing through the active area, and
wherein the plurality of dummy wiring patterns is disposed only in the active area.

11. The display device of claim 10 , wherein a plurality of non-active fan-out wirings is disposed in the non-active area between the first data conductive layer and the substrate.

12. The display device of claim 11 , wherein some of the plurality of non-active fan-out wires are directly connected to the plurality of signal wires, and others of the plurality of non-active fan-out wires are connected to the plurality of signal wires through the connection wire.

13. A display device comprising:
an active area in which a plurality of pixels is disposed and arranged in a matrix, and a non-active area disposed on a side of the active area in a first direction and including a pad region,
a plurality of non-active fan-out wires disposed in the non-active area and connected to the pad region;
a plurality of signal wires extending in the first direction to cross the active area and connected to the plurality of pixels;
a plurality of connection wires that at least partially passes through the active area and connects some of the plurality of non-active fan-out wires with some of the plurality of signal wires; and
a plurality of dummy wiring patterns disposed in the active area to cross some of the connection wires,
wherein the plurality of connection wires and the plurality of dummy wiring patterns are formed of a conductive layer disposed on a same layer, and
wherein the display device further comprises a plurality of disconnections at which the plurality of dummy wiring patterns is separated, and a plurality of dummy grooves formed on the plurality of connection wires and spaced apart from one another by a same spacing as the plurality of disconnections.

14. The display device of claim 13 , wherein the plurality of connection wires comprises a first extension portion and a second extension portion extending in the first direction, and a third extension portion connected to the first extension portion and the second extension portion and extending in a second direction intersecting the first direction.

15. The display device of claim 14 , wherein the plurality of dummy wiring patterns comprises first dummy wiring patterns extending in the first direction and crossing the third extension portion of the plurality of connection wires, and second dummy wiring patterns extending in the second direction and crossing the first extension portion or the second extension portion of the plurality of connection wires.

16. The display device of claim 15 ,
wherein the plurality of disconnections comprises first disconnections formed between the first dummy wiring patterns that are spaced apart from one another in the first direction, and
wherein the plurality of dummy grooves comprises first dummy grooves disposed above the plurality of connection wires and lies on a same line as the first disconnections.

17. The display device of claim 15 ,
wherein the plurality of dummy wiring patterns further comprises third dummy wiring patterns disposed in the active area and extending in the second direction to cross the first dummy wiring patterns and the plurality of signal wires,
wherein the third dummy wiring patterns do not cross the first extension portion and the second extension portion.

18. The display device of claim 17 ,
wherein the plurality of disconnections comprises second disconnections formed between the second dummy wiring patterns spaced apart from one another in the second direction, and
wherein the plurality of dummy grooves comprises second dummy grooves disposed above the third dummy wiring patterns and lie on a same line as the second disconnections.

19. The display device of claim 18 , wherein at least some of the second dummy grooves are further disposed on the third extension portion.

20. The display device of claim 14 ,
wherein the active area is divided into an inner active area in which the plurality of non-active fan-out wires overlap in the first direction, and an outer active area in which the plurality of non-active fan-out wires do not overlap, and
wherein the plurality of connection wires passes through the inner active area to be disposed in the outer active area.

21. The display device of claim 20 ,
wherein the first extension portion of the plurality of connection w

Assignees

• Samsung Display Co Ltd

Inventors

• Son Dong Hyun
• Cho Seung Hwan
• Kim Dong Won
• Ryu Min Yeul
• Bang Ki Ho
• Choi Nak Cho

Classifications

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• H01L27/3276 Primary

  Electricity · mapped topic

• H01L2227/323

  Electricity · mapped topic

• H01L27/3223

  Electricity · mapped topic

• H10K71/60

  Forming conductive regions or layers, e.g. electrodes · CPC title