Organic el display panel manufacturing method and functional layer forming device
US-2020161594-A1 · May 21, 2020 · US
Organic light-emitting diode including a hole injection layer, and method of manufacturing the same
US11825675B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11825675-B2 |
| Application number | US-202117231968-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 15, 2021 |
| Priority date | Aug 21, 2020 |
| Publication date | Nov 21, 2023 |
| Grant date | Nov 21, 2023 |
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Abstract
Official abstract text for this publication.
An organic light-emitting diode includes: a first electrode and a second electrode facing each other; an organic emission layer between the first electrode and the second electrode; and a hole injection layer between the first electrode and the organic emission layer, wherein the hole injection layer includes a second metal compound layer and a second metal layer, the second metal compound layer being between the first electrode and the organic emission layer, and the second metal layer being between the second metal compound layer and the organic emission layer.
First claim
Opening claim text (preview).
What is claimed is: 1. An organic light-emitting diode comprising: a first electrode and a second electrode facing each other; an organic emission layer between the first electrode and the second electrode; and a hole injection layer between the first electrode and the organic emission layer, wherein the hole injection layer comprises a second metal compound layer and a second metal layer, the second metal compound layer being between the first electrode and the organic emission layer, and the second metal layer being between the second metal compound layer and the organic emission layer. 2. The organic light-emitting diode of claim 1 , wherein a second metal compound of the second metal compound layer comprises a dipole material comprising a first metal and a halogen element, the first metal being the same as a metal of the first electrode. 3. The organic light-emitting diode of claim 1 , wherein a work function of the second metal compound layer and a work function of the second metal layer are each greater than a work function of the first electrode. 4. The organic light-emitting diode of claim 3 , wherein a work function of the second metal layer is greater than a work function of the second metal compound layer. 5. The organic light-emitting diode of claim 1 , wherein the hole injection layer further comprises a residual layer of a first metal compound layer, the residual layer being between the second metal layer and the organic emission layer. 6. The organic light-emitting diode of claim 5 , wherein a first metal compound of the first metal compound layer comprises a material comprising a second metal of the second metal layer and a halogen element. 7. The organic light-emitting diode of claim 6 , wherein a second metal compound of the second metal compound layer comprises a dipole material comprising a first metal and a halogen element, the first metal being the same as a metal of the first electrode. 8. The organic light-emitting diode of claim 5 , wherein a work function of the first metal compound layer, a work function of the second metal compound layer, and a work function of the second metal layer are each greater than a work function of the first electrode. 9. The organic light-emitting diode of claim 8 , wherein the work function of the second metal layer is greater than the work function of the first metal compound layer and greater than the work function of the second metal compound layer. 10. The organic light-emitting diode of claim 1 , further comprising a hole transport layer between the hole injection layer and the organic emission layer.
Assignees
Inventors
Classifications
- H10K50/15Primary
Hole transporting layers · CPC title
- H10K50/17Primary
Carrier injection layers · CPC title
Interrelation of parameters between multiple constituent active layers or sublayers, e.g. HOMO values in adjacent layers · CPC title
Properties of the organic materials covered by group H10K85/00 · CPC title
Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title
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Frequently asked questions
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- What does patent US11825675B2 cover?
- An organic light-emitting diode includes: a first electrode and a second electrode facing each other; an organic emission layer between the first electrode and the second electrode; and a hole injection layer between the first electrode and the organic emission layer, wherein the hole injection layer includes a second metal compound layer and a second metal layer, the second metal compound laye…
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10K50/15. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 21 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 10 related publications on this page (citations in our corpus or others sharing the same primary CPC).