Organic light-emitting device

Patent metadata

Field	Value
Publication number	US-9590203-B2
Application number	US-201414550104-A
Country	US
Kind code	B2
Filing date	Nov 21, 2014
Priority date	Jun 17, 2014
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

An organic light-emitting device with a plurality of subpixels, each subpixel including an emission region and a non-emission region, the organic light-emitting device including a substrate; an anode on the substrate, the anode including patterns that separately correspond to respective ones of the plurality of subpixels; an organic layer on the anode, the organic layer being common to the plurality of subpixels; and a cathode on the organic layer, the cathode including a plurality of subcathodes that each correspond to at least one of the subpixels and that allow light to pass through in emission regions, wherein adjacent two of the subcathodes overlap with each other in non-emission regions.

First claim

What is claimed is:

1. An organic light-emitting device with a plurality of subpixels, each subpixel including an emission region and a non-emission region, the organic light-emitting device comprising:
a substrate;
an anode on the substrate, the anode including patterns that separately correspond to respective subpixels of the plurality of subpixels;
an organic layer on the anode, the organic layer being common to the plurality of subpixels; and
a cathode on the organic layer, the cathode including a plurality of subcathodes that each correspond to at least one of the subpixels and that allow light to pass through in emission regions,
wherein two adjacent subcathodes overlap in non-emission regions.

2. The organic light-emitting device as claimed in claim 1 , wherein the subcathodes each have a thickness of about 60 Å to about 200 Å.

3. The organic light-emitting device as claimed in claim 1 , wherein the subcathodes include silver (Ag), magnesium-silver (Mg—Ag), magnesium (Mg), magnesium-indium (Mg—In), aluminum (Al), aluminum-lithium (Al—Li), lithium (Li), calcium (Ca), or a transparent conductive metal oxide.

4. The organic light-emitting device as claimed in claim 1 , wherein the subcathodes include silver.

5. The organic light-emitting device as claimed in claim 1 , wherein the anode is a reflective electrode or a semi-transmissive electrode.

6. The organic light-emitting device as claimed in claim 1 , wherein the plurality of subpixels includes a red subpixel, a green subpixel, and a blue subpixel.

7. An organic light-emitting device with a plurality of subpixels, each subpixel including an emission region and a non-emission region, the organic light-emitting device comprising:
a substrate;
a cathode on the substrate, the cathode including a plurality of subcathodes that each correspond to at least one of the subpixels and that allow light to pass through in the emission regions,
wherein two adjacent subcathodes overlap in the non-emission regions;
an organic layer on the cathode, the organic layer being common to the plurality of subpixels; and
an anode on the organic layer, the anode including patterns that separately correspond to respective subpixels of the plurality of subpixels.

8. The organic light-emitting device as claimed in claim 7 , wherein the subcathodes each have a thickness of about 60 Å to about 200 Å.

9. The organic light-emitting device as claimed in claim 7 , wherein the subcathodes include silver (Ag), magnesium-silver (Mg—Ag), magnesium (Mg), magnesium-indium (Mg—In), aluminum (Al), aluminum-lithium (Al—Li), lithium (Li), calcium (Ca), or a transparent conductive metal oxide.

10. The organic light-emitting device as claimed in claim 7 , wherein the anode is a reflective electrode or a semi-transmissive electrode.

11. An organic light-emitting device with a plurality of subpixels, each subpixel including an emission region and a non-emission region, the organic light-emitting device comprising:
a substrate;
an anode on the substrate;
an organic layer on the anode, the organic layer emitting white light; and
a cathode on the organic layer, the cathode corresponding to at least one of the subpixels and allowing light to pass through in the emission regions,
wherein the cathode overlaps another adjacent cathode in the non-emission region.

12. The organic light-emitting device as claimed in claim 11 , wherein the cathode includes silver (Ag), magnesium-silver (Mg—Ag), magnesium (Mg), magnesium-indium (Mg—In), aluminum (Al), aluminum-lithium (Al—Li), lithium (Li), calcium (Ca), or a transparent conductive metal oxide.

13. The organic light-emitting device as claimed in claim 11 , wherein the anode is a reflective electrode or a semi-transmissive electrode.

14. The organic light-emitting device as claimed in claim 11 , wherein the organic layer includes a single emission layer emitting white light.

15. The organic light-emitting device as claimed in claim 11 , wherein:
the organic layer includes a plurality of emission layers stacked between the anode and the cathode, the plurality of emission layers emitting light of different colors, and
a combination of the light of different colors emitted from the plurality of emission layers is white light.

16. The organic light-emitting device as claimed in claim 15 , wherein the organic layer includes:
an intermediate connection layer between the plurality of emission layers.

17. An organic light-emitting device with a plurality of subpixels, each subpixel including an emission region and a non-emission region, the organic light-emitting device comprising:
a substrate;
a cathode on the substrate, the cathode corresponding to at least one of the subpixels and allowing light to pass through in the emission regions, wherein the cathode overlaps another adjacent cathode in the non-emission regions;
an organic layer on the cathode, the organic layer emitting white light; and
an anode on the organic layer.

18. The organic light-emitting device as claimed in claim 17 , wherein the organic layer includes a single emission layer emitting white light.

19. The organic light-emitting device as claimed in claim 17 , wherein:
the organic layer includes a plurality of emission layers stacked between the anode and the cathode, the plurality of emission layers emitting light of different colors, and
a combination of the light of different colors emitted from the plurality of emission layers is white light.

20. The organic light-emitting device as claimed in claim 19 , wherein the organic layer includes:
an intermediate connection layer between the plurality of emission layers.

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Seok-Gyu
• Kim Dong-Chan
• Kim Won-Jong
• Kim Eung-Do
• Seo Dong-Kyu
• Song Young-Woo
• Im Da-Hea
• Jung Bo-Ra

Classifications

• H10K59/80524

  Transparent cathodes, e.g. comprising thin metal layers · CPC title

• H10K59/80521

  characterised by their shape · CPC title

• H10K50/828

  Transparent cathodes, e.g. comprising thin metal layers · CPC title

• H10K59/35 Primary

  comprising red-green-blue [RGB] subpixels · CPC title

• H01L27/3211

  Electricity · mapped topic