Organic electroluminescence display device having a conductive organic layer in contact with an upper electrode

Patent metadata

Field	Value
Publication number	US-9362520-B2
Application number	US-201414503444-A
Country	US
Kind code	B2
Filing date	Oct 1, 2014
Priority date	Oct 1, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.

First claim

What is claimed is:

1. An organic electroluminescence display device comprising:
a lower electrode that is made of a conductive inorganic material and formed in each of sub-pixels arranged in a matrix in a display area;
a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light;
an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material;
a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material; and
a conductive inorganic film that is in contact with a surface of the conductive organic layer on the side opposite to a surface thereof on which the upper electrode is formed, formed to cover the whole of the display area, and made of a conductive inorganic material.

2. The organic electroluminescence display device according to claim 1 , wherein
the conductive organic layer is formed on the inside of the upper electrode in a plan view.

3. The organic electroluminescence display device according to claim 1 , further comprising, on the conductive organic layer, a sealing film that covers the outsides of the conductive organic layer and the upper electrode in the plan view and is made of an inorganic material.

4. The organic electroluminescence display device according to claim 1 , wherein
the conductive organic layer planarizes irregularities of the upper electrode.

5. The organic electroluminescence display device according to claim 1 , wherein
the light-emitting organic layer has a configuration in which a plurality of the light-emitting layers are disposed in a tandem arrangement, and a charge generation layer is arranged between the plurality of light-emitting layers.

6. The organic electroluminescence display device according to claim 1 , wherein
an inorganic substance for increasing conductivity is added to a material of the conductive organic layer.

7. The organic electroluminescence display device according to claim 1 , wherein
the conductive organic layer includes ions injected after deposition.

8. An organic electroluminescence display device comprising:
a lower electrode that is made of a conductive inorganic material and formed in each of sub-pixels arranged in a matrix in a display area;
a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light;
an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and
a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material,
wherein the conductive organic layer is formed of a charge generation layer.

9. The organic electroluminescence display device according to claim 8 , wherein the conductive organic layer is formed on the inside of the upper electrode in a plan view.

10. The organic electroluminescence display device according to claim 8 , further comprising, on the conductive organic layer, a sealing film that covers the outsides of the conductive organic layer and the upper electrode in the plan view and is made of an inorganic material.

11. The organic electroluminescence display device according to claim 8 , wherein the conductive organic layer planarizes irregularities of the upper electrode.

12. The organic electroluminescence display device according to claim 8 , wherein the light-emitting organic layer has a configuration in which a plurality of the light-emitting layers are disposed in a tandem arrangement, and a charge generation layer is arranged between the plurality of light-emitting layers.

13. The organic electroluminescence display device according to claim 8 , wherein an inorganic substance for increasing conductivity is added to a material of the conductive organic layer.

14. The organic electroluminescence display device according to claim 8 , wherein the conductive organic layer includes ions injected after deposition.

Assignees

• Japan Display Inc

Inventors

• Sato Toshihiro
• Toyoda Hironori

Classifications

• H10K59/122

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

• H10K50/8445

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title