Organic light emitting display

Patent metadata

Field	Value
Publication number	US-9570523-B2
Application number	US-201514712293-A
Country	US
Kind code	B2
Filing date	May 14, 2015
Priority date	Jul 2, 2013
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A method of making a display device includes forming first electrodes of organic light emitting diodes in respective pixel areas on a substrate, forming a first common layer on the first electrodes in the pixel areas, forming emission layers in the pixel areas on the first common layer, forming a second electrode of the organic light emitting diodes on the emission layer, and applying physical pressure to divide the first common layer.

First claim

What is claimed is:

1. An organic light emitting display, comprising:
a plurality of pixels, each of the pixels including at least one organic light emitting diode (OLED) which includes:
a first electrode and an emission layer in a respective pixel area,
a first common layer between the first electrode and emission layer, and
a second electrode on the emission layer, a plurality of pixels sharing the first common layer, wherein the first common layer includes at least one opening to divide adjacent ones of the plurality of pixels along a horizontal or vertical pixel line.

2. The display as claimed in claim 1 , wherein the first common layer is disposed to be divided with respect to horizontal and vertical pixel lines.

3. The display as claimed in claim 1 , wherein the OLED includes:
a second common layer between the emission layer and second electrode,
wherein a plurality of pixels share the second common layer.

4. The display as claimed in claim 3 , wherein the second common layer is divided with respect to a horizontal or vertical pixel line.

5. The display as claimed in claim 3 , wherein the second common layer is divided into smaller second common layers, each smaller second common layer having a size smaller than a size of the second common layer.

6. The display as claimed in claim 5 , wherein the smaller second common layers are spaced apart from one another.

7. The display as claimed in claim 1 , wherein:
the first electrode and emission layer are patterned for a corresponding one of the pixels, and
two or more of the pixels share the second electrode.

8. The display as claimed in claim 1 , wherein the first common layer is divided into smaller first common layers, each smaller first common layer having a size smaller than a size of the first common layer.

9. The display as claimed in claim 8 , wherein the smaller first common layers are spaced apart from one another.

10. An organic light emitting display, comprising:
a plurality of pixels, each of the pixels including at least one organic light emitting diode (OLED) which includes:
a first electrode and an emission layer in a respective pixel area,
a first common layer between the first electrode and emission layer,
a second electrode on the emission layer, and
a second common layer between the emission layer and second electrode,
wherein the plurality of pixels share the first common layer, the plurality of pixels share the second common layer, and the second common layer includes at least one opening to divide adjacent ones of the plurality of pixels with respect to a horizontal or vertical pixel line, each portion of the divided second common layer having a size smaller than a size of the second common layer.

11. The display as claimed in claim 10 , wherein the first common layer includes at least one opening to divide adjacent ones of the plurality of pixels into smaller first common layers, each of the smaller first common layers having a size smaller than a size of the first common layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Tae-Kyu

Classifications

• H10K59/122

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

• H10K71/211 Primary

  by selective transformation of an existing layer · CPC title

• H01L27/3246 Primary

  Electricity · mapped topic

• H01L51/5209

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic