Display apparatus

Patent metadata

Field	Value
Publication number	US-9859334-B2
Application number	US-201715416497-A
Country	US
Kind code	B2
Filing date	Jan 26, 2017
Priority date	May 27, 2016
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A display apparatus includes a protective layer, a substrate including a non-display area adjacent to a display area, and a sub-pixel in the display area and including a conductive layer, an inorganic insulating layer on the conductive layer, an organic insulating layer on the inorganic insulating layer, and a display device connected to the conductive layer. The display apparatus further includes a power supply line including a first power supply line and a second power supply line electrically connected to the sub-pixel; and an insulating dam as at least one layer in the non-display area. The non-display area includes the insulating dam, the power supply line are placed, and a spaced area which does not include the organic insulating layer. The protective layer covers an exposed portion of the power supply line.

First claim

What is claimed is:

1. A display apparatus, comprising:
a protective layer;
a substrate including a non-display area adjacent to a display area;
a sub-pixel in the display area and including a conductive layer, an inorganic insulating layer on the conductive layer, an organic insulating layer on the inorganic insulating layer, and a display device connected to the conductive layer;
a power supply line including a first power supply line and a second power supply line electrically connected to the sub-pixel; and
an insulating dam as at least one layer in the non-display area, wherein the non-display area includes the insulating dam, the power supply line, and a spaced area which does not include the organic insulating layer and wherein the protective layer covers an exposed portion of the power supply line.

2. The display apparatus as claimed in claim 1 , wherein:
the spaced area corresponds to an open area between an area of the organic insulating layer and an area of the insulating dam, and
the exposed portion of the power supply line is exposed in the spaced area.

3. The display apparatus as claimed in claim 2 , wherein the protective layer covers the exposed portion of the power supply line which extends to the spaced area.

4. The display apparatus as claimed in claim 3 , wherein:
different voltages are to be applied to the first power supply line and the second power supply line,
an edge portion of the first power supply line and an edge portion of the second power supply line are exposed in the spaced area, and
the protective layer selectively covers the exposed edge portion of the first power supply line and the exposed edge portion of the second power supply line.

5. The display apparatus as claimed in claim 4 , wherein the protective layer extends from each of the exposed edge portions of the first and second power supply lines and covers all of the first power supply line, the second power supply line, the organic insulating layer, and the insulating dam which are arranged in one direction with respect to the substrate.

6. The display apparatus as claimed in claim 3 , wherein:
the power supply line is on a same layer as the conductive layer, and
the protective layer is on a same layer as the inorganic insulating layer that covers the conductive layer.

7. The display apparatus as claimed in claim 6 , wherein:
the conductive layer includes a first conductive layer and a second conductive layer above the first conductive layer,
the organic insulating layer includes a first organic insulating layer between the first conductive layer and the second conductive layer and a second organic insulating layer on the second conductive layer, and
the inorganic insulating layer is between the first conductive layer and the first organic insulating layer,
the power supply line in the spaced area is on a same layer as the first conductive layer, and
the protective layer is on a same layer as the inorganic insulating layer that covers the first conductive layer.

8. The display apparatus as claimed in claim 7 , wherein the power supply line has a single-conductive layer structure that includes at least one conductive portion on a same layer as the first conductive layer.

9. The display apparatus as claimed in claim 8 , wherein the power supply line includes a first conductive part that includes titanium (Ti), a second conductive part on the first conductive part and including aluminum (Al), and a third conductive part on the second conductive part and including titanium (Ti).

10. The display apparatus as claimed in claim 7 , wherein the protective layer has a single-layer structure on a same layer as the inorganic insulating layer that covers the first conductive layer.

11. The display apparatus as claimed in claim 7 , wherein the insulating dam includes a plurality of dams that are spaced apart from each other.

12. The display apparatus as claimed in claim 11 , wherein:
the insulating dam is on a same layer as a plurality of organic insulating layers which include one or more of a first planarization layer corresponding to the first organic insulating layer covering the first conductive layer, a second planarization layer corresponding to the second organic insulating layer covering the second conductive layer, a pixel defining layer corresponding to a third organic insulating layer defining the sub-pixel, or a spacer corresponding to a fourth organic insulating layer placed along the sub-pixel, and
the plurality of organic insulating layers are stacked in a vertical direction with respect to the substrate.

13. The display apparatus as claimed in claim 11 , wherein the dams have heights that increase toward an edge of the substrate.

14. The display apparatus as claimed in claim 7 , wherein:
the first conductive layer is above the substrate,
the inorganic insulating layer is on the first conductive layer and includes an opening exposing a portion of the first conductive layer,
the first organic insulating layer is on the inorganic insulating layer and includes an opening exposing the portion of the first conductive layer,
the second conductive layer is on the first organic insulating layer, and
the second organic insulating layer is on the second conductive layer and includes an opening through which the second conductive layer is electrically connected to the display device.

15. The display apparatus as claimed in claim 7 , further comprising above the substrate:
a thin film transistor including an active layer including a source region, a drain region, and a channel region connecting the source region to the drain region; and gate electrode above the active layer and insulated from the active layer, wherein the first conductive layer is electrically connected to one of the source region or the drain region.

16. The display apparatus as claimed in claim 7 , further comprising above the substrate:
a pixel electrode connected to the second conductive layer;
an intermediate layer on the pixel electrode and including an emission layer; and an opposite electrode on the intermediate layer.

17. The display apparatus as claimed in claim 7 , wherein:
the first power supply line includes a first main line corresponding to the display area and a first connection line extending from the first main line in a first direction, and
the second power supply line includes a second main line surrounding different ends of the first main line and other areas of the display area and a second connection line extending from the second main line in the first direction.

18. A display apparatus, comprising:
a display area;
a non-display area;
a first dam in the non-display area;
a power supply line for the display area; and
a protective layer in the non-display area, the protective layer covering a portion of the power supply line not covered by the first dam in the non-display area.

19. The display apparatus as claimed in claim 18 , wherein the first dam has a height sufficient to block material encapsulating the display area DA from to a side each of the non-display area.

20. The display apparatus as claimed in claim 18 , further comprising:
a second dam in the non-display area,
wherein the protective layer covers the power supply line in an area between the first and second dams.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Keonwoo
• Kim Deukjong

Classifications

• H01L27/326

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic

• H01L27/2418 Primary

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic

• H01L27/3297

  Electricity · mapped topic