Organic luminescence display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9324962-B2
Application number	US-201314011520-A
Country	US
Kind code	B2
Filing date	Aug 27, 2013
Priority date	May 9, 2013
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

According to an aspect of the present invention, an organic luminescence display includes a substrate, a first electrode on the substrate, a pixel defining layer on the first electrode and partially exposing the first electrode, an auxiliary layer on the pixel defining layer, an organic layer on the first electrode and an edge of the auxiliary layer, and a second electrode on the organic layer.

First claim

What is claimed is:

1. An organic luminescence display comprising:
a substrate;
a first electrode on the substrate;
a pixel defining layer on the first electrode and partially exposing the first electrode;
an auxiliary layer on the pixel defining layer;
an organic layer comprising a middle portion on the first electrode and an edge portion on an edge of the auxiliary layer, a surface of the edge portion of the organic layer defining a center portion of a top surface of the auxiliary layer exposed by the organic layer; and
a second electrode on the organic layer, wherein
the surface of the edge portion of the organic layer has a surface roughness higher than other surfaces of the edge portion of the organic layer.

2. The organic luminescence display of claim 1 , wherein the middle portion and the edge portion comprise the same material.

3. The organic luminescence display of claim 1 , wherein the edge portion comprises a random uneven surface.

4. The organic luminescence display of claim 1 , wherein the middle portion and the edge portion are separated from each other.

5. The organic luminescence display of claim 1 , wherein the auxiliary layer has an inversely tapered shape.

6. The organic luminescence display of claim 1 , wherein an angle formed by a side surface of the auxiliary layer and a top surface of the pixel defining layer is 90 to 180 degrees.

7. An organic luminescence display comprising:
a plurality of pixels, each comprising a first electrode, a second electrode on the first electrode, and a middle portion of an organic layer between the first electrode and the second electrode; and
at least one auxiliary layer between the pixels and having an edge portion of the organic layer on a top surface thereof, a surface of the edge portion of the organic layer defining a center portion of the top surface of the auxiliary layer exposed by the organic layer, wherein
the surface of the edge portion of the organic layer has a surface roughness higher than other surfaces of the edge portion of the organic layer.

8. The organic luminescence display of claim 7 , wherein the pixels are arranged in a matrix pattern, and the auxiliary layer is parallel to rows or columns of the pixels.

9. The organic luminescence display of claim 8 , wherein the auxiliary layer surrounds each of the pixels.

10. The organic luminescence display of claim 7 , wherein the edge portion of the organic layer is on an edge of the auxiliary layer.

11. The organic luminescence display of claim 10 , wherein the middle portion and the edge portion comprise the same material.

12. The organic luminescence display of claim 10 , wherein the edge portion comprises a random uneven surface.

13. The organic luminescence display of claim 10 , wherein the middle portion and the edge portion are separated from each other.

14. The organic luminescence display of claim 7 , wherein the auxiliary layer has an inversely tapered shape.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jun-Young

Classifications

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H01L51/5262

  Electricity · mapped topic

• H01L51/5268

  Electricity · mapped topic