Display apparatus
US-2024381702-A1 · Nov 14, 2024 · US
Organic light-emitting device
US9099666B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9099666-B2 |
| Application number | US-201414296682-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 5, 2014 |
| Priority date | Jun 5, 2013 |
| Publication date | Aug 4, 2015 |
| Grant date | Aug 4, 2015 |
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Abstract
Official abstract text for this publication.
An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material, the second light-emitting layer comprises a second phosphorescent material; and the lowest triplet excited state energy level of the hole-transporting material is: (a) lower than the lowest triplet excited state of the second phosphorescent material, and (b) the same as or higher than the lowest triplet excited state energy level of the first phosphorescent material.
First claim
Opening claim text (preview).
The invention claimed is: 1. An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material, the second light-emitting layer comprises a second phosphorescent material; and the lowest triplet excited state ener…
Assignees
Inventors
Classifications
Electricity · mapped topic
- H10K59/32Primary
Electricity · mapped topic
- H10H20/813Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9099666B2 cover?
- An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material, the second light-emitting layer comprises a second phos…
- Who is the assignee on this patent?
- Cambridge Display Tech Ltd, Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H10K59/32. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 04 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).