Display panel and display device including the same

Patent metadata

Field	Value
Publication number	US-10276604-B2
Application number	US-201615248897-A
Country	US
Kind code	B2
Filing date	Aug 26, 2016
Priority date	Aug 28, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

There are provided a display panel and a display device including the same. In the display panel and display device including the same, in a structure in which an insulating layer having a depression point is provided between different conductive layers, another insulating layer may be disposed to cover the depression point. Accordingly, an occurrence of a short circuit may be minimized between the different conductive layers.

First claim

What is claimed is:

1. A display panel comprising:
a substrate;
a first conductive layer disposed on the substrate;
a first insulating layer, a second conductive layer, and a second insulating layer sequentially disposed on the substrate and including step portions, respectively;
a third insulating layer disposed on a part of a top of the second insulating layer; and
a third conductive layer disposed on the substrate including the third insulating layer,
wherein the step portions include a depression point, and the third insulating layer is disposed to overlap the depression point, and
wherein the second insulating layer includes a breakage at the depression point.

2. The display panel of claim 1 , wherein the third insulating layer is further disposed in a first direction from the depression point.

3. The display panel of claim 1 , wherein the third insulating layer is configured to be flat at an area corresponding to the step portion of the second insulating layer and residual areas other than the area corresponding to the step portion.

4. The display panel of claim 1 , wherein the first and second insulating layers are made of an inorganic insulating material, and
the third insulating layer is made of an organic insulating material.

5. The display panel of claim 1 , wherein a thickness of the third insulating layer is larger than that of the second insulating layer.

6. The display panel of claim 1 , wherein a thickness of the third insulating layer disposed at the area overlapped with the depression point is larger than a thickness of the third insulating layer at a remaining portion of the third insulating layer disposed in a second direction from the depression point, and a portion of the third insulating layer is disposed in the breakage at the depression point.

7. The display panel of claim 1 , wherein the second insulating layer includes a non-disposed area of the second insulating layer at the depression point.

8. A display device comprising:
a data driver driving a plurality of data lines;
a gate driver driving a plurality of gate lines;
a first conductive layer disposed on a substrate;
a first insulating layer, a second conductive layer, and a second insulating layer sequentially disposed on the substrate and including step portions, respectively;
a third insulating layer disposed on a part of a top of the second insulating layer; and
a third conductive layer disposed on the substrate including the third insulating layer,
wherein the step portions include a depression point, and the third insulating layer is disposed to overlap the depression point,
wherein a thickness of the third insulating layer disposed at an area overlapped with the depression point is larger than a thickness of the third insulating layer at a remaining portion of the third insulating layer disposed in a second direction from the depression point, and
wherein the second insulating layer includes a breakage at the depression point.

9. The display device of claim 8 , wherein the third insulating layer is further disposed in a first direction from the depression point.

10. The display device of claim 8 , wherein the third insulating layer is configured to be flat at an area corresponding to the step portion of the second insulating layer and residual areas other than the area corresponding to the step portion.

11. The display device of claim 9 , wherein the first and second insulating layers are made of an inorganic insulating material, and
the third insulating layer is made of an organic insulating material.

12. The display device of claim 8 , wherein a thickness of the third insulating layer is larger than that of the second insulating layer.

13. The display device of claim 8 , wherein thicknesses of the first and second insulating layers are the smallest at the depression point.

14. The display device of claim 8 , wherein the second insulating layer includes a non-disposed area of the second insulating layer at the depression point.

15. The display panel of claim 1 , wherein the third conductive layer contacts both the second insulating layer and the third insulating layer.

16. The display device of claim 8 , wherein the third conductive layer contacts both the second insulating layer and the third insulating layer.

17. The display device of claim 8 , wherein a portion of the third insulating layer is disposed in the breakage at the depression point.

Assignees

• Lg Display Co Ltd

Inventors

• Choi Jaeyeong
• Park Chonghun

Classifications

• H01L27/3276

  Electricity · mapped topic

• H01L27/1248 Primary

  Electricity · mapped topic

• H01L27/1244

  Electricity · mapped topic

• H10D86/443 Primary

  adapted for preventing breakage, peeling or short circuiting · CPC title

• H10D86/60 Primary

  wherein the TFTs are in active matrices · CPC title