Novel Compound, and Light-Emitting Element and Electronic Device Comprising Same
US-2016248019-A1 · Aug 25, 2016 · US
Organic electroluminescent display deivce, a fabricating method thereof and a display device
US2016248030A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016248030-A1 |
| Application number | US-201414768851-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 1, 2014 |
| Priority date | Sep 4, 2014 |
| Publication date | Aug 25, 2016 |
| Grant date | — |
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- Title
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Abstract
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An organic electroluminescent display device comprising a substrate, a hole injection layer, a hole transport layer and an electron blocking layer arranged on the substrate successively, wherein the material of the hole transport layer is a material with P-type doping.
First claim
Opening claim text (preview).
What is claimed is: 1 - 10 . (canceled) 11 . An organic electroluminescent display device, comprising: a substrate, a hole injection layer, a hole transport layer and an electron blocking layer arranged on the substrate successively, wherein: a material of the hole transport layer is a material with P-type doping. 12 . The organic electroluminescent display device as claimed in claim 11 , wherein a doping concentration of the P-type doping presents gradient variation, so that energy level of the hole transport layer presents gradient variation; and wherein the doping concentration of the P-type doping close to the hole injection layer is higher than the doping concentration of the P-type doping close to the electron blocking layer. 13 . The organic electroluminescent display device as claimed in claim 12 , wherein the highest occupied molecular orbital energy level difference between the hole transport layer and the electron blocking layer is less than the highest occupied molecular orbital energy level difference between an undoped hole transport layer and the electron blocking layer. 14 . The organic electroluminescent display device as claimed in claim 12 , wherein the highest occupied molecular orbital energy level difference between the hole injection layer and the hole transport layer is less than the highest occupied molecular orbital energy level difference between the hole injection layer and an undoped hole transport layer. 15 . The organic electroluminescent display device as claimed in claim 12 , wherein a minimum doping concentration of the P-type doping is 1% and a maximum doping concentration of the P-type doping is 6%. 16 . The organic electroluminescent display device as claimed in claim 15 , wherein a dopant used by the hole transport layer is P-type oxidant. 17 . The organic electroluminescent display device as claimed in claim 16 , wherein the P-type oxidant is any one of antimony pentachloride, iron chloride, iodine, 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane, and tris(4-bromophenyl)aminium hexachloroantimonate. 18 . A fabricating method of an organic electroluminescent display device as claimed in claim 11 , comprising forming a hole injection layer, a hole transport layer and an electron blocking layer successively on a substrate, wherein forming the hole transport layer on the substrate specifically comprises forming the hole transport layer on the substrate on which the hole injection layer is formed by evaporating a bulk and a P-type doping together in an evaporation chamber. 19 . The fabricating method as claimed in claim 18 , wherein a doping concentration of the P-type doping presents gradient variation so that energy level of the hole transport layer presents gradient variation; and wherein the doping concentration of the P-type doping close to the hole injection layer is higher than the doping concentration of the P-type doping close to the electron blocking layer. 20 . The fabricating method as claimed in claim 19 , wherein the highest occupied molecular orbital energy level difference between the hole transport layer and the electron blocking layer is less than the highest occupied molecular orbital energy level difference between an undoped hole transport layer and the electron blocking layer. 21 . The fabricating method as claimed in claim 19 , wherein the highest occupied molecular orbital energy level difference between the hole injection layer and the hole transport layer is less than the highest occupied molecular orbital energy level difference between the hole injection layer and an undoped hole transport layer. 22 . The fabricating method as claimed in claim 19 , wherein a minimum doping concentration of the P-type doping is 1% and a maximum doping concentration of the P-type doping is 6%. 23 . The fabricating method as claimed in claim 22 , wherein a dopant used by the hole transport layer is P-type oxidant. 24 . The fabricating method as claimed in claim 23 , wherein the P-type oxidant is any one of antimony pentachloride, iron chloride, iodine, 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane and tris(4-bromophenyl)aminium hexachloroantimonate. 25 . The fabricating method as claimed in claim 18 , wherein forming the hole transport layer on the substrate further comprises controlling a concentration of the P-type doping in the formed hole transport layer by controlling a temperature for evaporating the P-type doping. 26 . A display device, comprising an organic electroluminescent display device as claimed in claim 11 . 27 . The display device as claimed in claim 26 , wherein a doping concentration of the P-type doping presents gradient variation so that energy level of the hole transport layer presents gradient variation; and wherein the doping concentration of the P-type doping close to the hole injection layer is higher than the doping concentration of the P-type doping close to the electron blocking layer. 28 . The display device as claimed in claim 27 , wherein the highest occupied molecular orbital energy level difference between the hole transport layer and the electron blocking layer is less than the highest occupied molecular orbital energy level difference between an undoped hole transport layer and the electron blocking layer. 29 . The display device as claimed in claim 27 , wherein the highest occupied molecular orbital energy level difference between the hole injection layer and the hole transport layer is less than the highest occupied molecular orbital energy level difference between the hole injection layer and an undoped hole transport layer. 30 . The display device as claimed in claim 27 , wherein a minimum doping concentration of the P-type doping is 1% and a maximum doping concentration of the P-type doping is 6%.
Assignees
Inventors
Classifications
Electron blocking layers · CPC title
comprising dopants · CPC title
- H10K71/30Primary
Doping active layers, e.g. electron transporting layers · CPC title
- H01L51/506Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US2016248030A1 cover?
- An organic electroluminescent display device comprising a substrate, a hole injection layer, a hole transport layer and an electron blocking layer arranged on the substrate successively, wherein the material of the hole transport layer is a material with P-type doping.
- Who is the assignee on this patent?
- Boe Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10K71/30. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Aug 25 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).