Organic light-emitting display panel device

• US 10,497,879 B2
• Filed: 06/08/2017
• Issued: 12/03/2019
• Est. Priority Date: 12/28/2016
• Status: Active Grant

• Current Assignee: Tianma Microelectronics Company Limited, Wuhan Tianma Micro-Electronics Company Limited (Wuhan Donghu New Technology Development Zone Production Promotion Centre), Wuhan Tianma Microelectronics Company Limited Shanghai Branch
• Original Assignee: Shanghai Tianma AM-OLED Co. Ltd (Tianma Microelectronics Company Limited)
• Inventors: Lei, Zhihong, Niu, Jinghua, Wang, Xiangcheng, Lv, Lei
• Primary Examiner(s): Wright, Tucker J
• Assistant Examiner(s): Baptiste, Wilner Jean
• Application Number:
  US15/616,941
• Publication Number:
  US 20170309833A1
• Time in Patent Office: 908 Days
• CPC Class Codes: H10K 2102/00 Constructional details relating to the organic devices covered by this subclass
• CPC Class Codes: H10K 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/155 comprising dopants
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/165 comprising dopants
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/171 Electron injection layers
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 50/82 Cathodes
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

Embodiments of the present invention disclose an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel includes: a first electrode, a hole injection layer, a light-emitting layer and a second electrode that are stacked in turn; wherein, the material of the hole injection layer includes an organic material and a conductive metal oxide, or the hole injection layer is formed by stacking an organic material film layer and a conductive metal oxide film layer.

Claims

1. An organic light-emitting display panel, comprising:

a first electrode, wherein the first electrode is an anode electrode,

a hole injection layer stacked on the first electrode,

a light-emitting layer stacked on the hole injection layer,

an electron transport layer stacked on the light-emitting layer,

an electron injection layer stacked on the electron transport layer, and

a second electrode stacked on the electron injection layer, wherein the second electrode is a cathode electrode,

wherein a material of the hole injection layer comprises an organic material and a conductive metal oxide, or the hole injection layer is formed by stacking an organic material film layer and a conductive metal oxide film layer,

wherein the material of the hole injection layer comprises molybdenum trioxide and 2,3,6,7,10,11-hexacyano-1,4,5,8,9,12-hexaazatriphenylene (HAT-CN), and the volume ratio of the molybdenum trioxide to the HAT-CN in the hole injection layer is 1;

1, wherein the electron transport layer is doped with ytterbium.

2. The organic light-emitting display panel according to claim 1, wherein

at least one of the electron injection layer and the second electrode is doped with at least one of an alkali metal, an alkaline earth metal and a rare earth metal.

3. The organic light-emitting display panel according to claim 1, wherein

at least one of the first electrode and the second electrode is a light exit side electrode of the organic light-emitting display panel.

4. The organic light-emitting display panel according to claim 3, wherein

the first electrode is the light exit side electrode of the organic light-emitting display panel;

and

a material of the first electrode is a conductive transparent material.

5. The organic light-emitting display panel according to claim 3, wherein

the second electrode is the light exit side electrode of the organic light-emitting display panel;

and

a material of the second electrode is silver or an alloy containing silver.

6. The organic light-emitting display panel according to claim 4, wherein, a material of the second electrode is silver or an alloy containing silver.

7. The organic light-emitting display panel according to claim 5, wherein

the material of the second electrode is an alloy containing silver, wherein a volume percent of silver is greater than or equal to 80%.

8. The organic light-emitting display panel according to claim 5, wherein

a thickness of the second electrode is 10 nm-20 nm.

9. The organic light-emitting display panel according to claim 5, wherein

the first electrode comprises a first conductive transparent film, a second conductive transparent film and a reflective film located between the first conductive transparent film and the second conductive transparent film.

10. The organic light-emitting display panel according to claim 9, wherein

a material of the first conductive transparent film and the second conductive transparent film is tin indium oxide, zinc indium oxide or a mixture of aluminium oxide and zinc oxide, and the material of the reflective film is silver or an alloy containing silver.

11. The organic light-emitting display panel according to claim 10, wherein

a thickness of the reflective film is 50 nm-150 nm.

12. The organic light-emitting display panel according to claim 5, further comprising an optical coupling layer, wherein the optical coupling layer is located on a side of the light exit side electrode of the organic light-emitting display panel away from the light-emitting layer.

13. The organic light-emitting display panel according to claim 12, wherein, a transmittance of the light exit side electrode is 30%-50%, and the total transmittance of the light exit side electrode and the optical coupling layer is greater than or equal to 65%.

14. An organic light-emitting display device, comprising an organic light-emitting display panel, wherein the organic light-emitting display panel comprises:

a first electrode, wherein the first electrode is an anode electrode,

a hole injection layer stacked on the first electrode,

a light-emitting layer stacked on the hole injection layer,

an electron transport layer stacked on the light-emitting layer,

an electron injection layer stacked on the electron transport layer, and

a second electrode stacked on the electron injection layer, wherein the second electrode is a cathode electrode,

wherein a material of the hole injection layer comprises an organic material and a conductive metal oxide, or the hole injection layer is formed by stacking an organic material film layer and a conductive metal oxide film layer,

wherein the material of the hole injection layer comprises molybdenum trioxide and 2,3,6,7,10,11-hexacyano-1,4,5,8,9,12-hexaazatriphenylene (HAT-CN), and the volume ratio of the molybdenum trioxide to the HAT-CN in the hole injection layer is 1;

1, wherein the electron transport layer is doped with ytterbium.