Organic electroluminescent element, organic electroluminescent display device, and electronic equipment
US-2024423010-A1 · Dec 19, 2024 · US
Organic light-emitting device
US2016308157A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016308157-A1 |
| Application number | US-201615197355-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 29, 2016 |
| Priority date | Jun 24, 2013 |
| Publication date | Oct 20, 2016 |
| Grant date | — |
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Abstract
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Provided is an organic light-emitting device including a first electrode, a second electrode disposed opposite to the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron-transporting layer disposed between the emission layer and the second electrode. The electron-transporting layer includes a first electron-transporting material and a second electron-transporting material. The lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL1) and the lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL2) satisfy the equation 0.1 eV≦|EL1−EL2|≦0.3 eV.
First claim
Opening claim text (preview).
1 . An organic light-emitting device, comprising: a first electrode; a second electrode disposed opposite to the first electrode; an emission layer disposed between the first electrode and the second electrode; and an electron-transporting layer disposed between the emission layer and the second electrode; wherein the electron-transporting layer includes a first electron-transporting material and a second electron-transporting material; and a lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL 1 ) and a lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL 2 ) satisfy the equation 0.1 eV≦|EL 1 −EL 2 |≦0.3 eV. 2 . The organic light-emitting device as claimed in claim 1 , wherein a highest occupied molecular orbital (HOMO) energy level of the first electron-transporting material (EFL) and the lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL 1 ) satisfy the equation 2.7 eV≦|EL 1 −EH 1 |≦3.2 eV; and a highest occupied molecular orbital (HOMO) of the second electron-transporting material (EH 2 ) and the lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL 2 ) satisfy the equation, 2.7 eV≦|EL 2 −EH 2 ≦3.2 eV. 3 . The organic light-emitting device as claimed in claim 1 , wherein a molecular weight of the first electron-transporting material (MW 1 ) and a molecular weight of the second electron-transporting material (MW 2 ) satisfy the equation, |MW 1 −MW 2 |≦30. 4 . The organic light-emitting device as claimed in claim 1 , wherein both of the first electron-transporting material and the second electron-transporting material are each metal-atom-free organic compounds. 5 . The organic light-emitting device as claimed in claim 1 , wherein the first electron-transporting material and the second electron-transporting material are each independently selected from a pyridine derivative, a pyrimidine derivative, and a triazine derivative. 6 .- 20 . (canceled) 21 . The organic light-emitting device as claimed in claim 1 , wherein a weight ratio of the first electronic-transporting material to the second electronic-transporting material is in a range of about 80:20 to about 50:50. 22 . The organic light-emitting device as claimed in claim 1 , wherein the electron-transporting layer further comprises a metal-containing compound. 23 . The organic light-emitting device as claimed in claim 1 , wherein the electron-transporting layer further comprises LiQ or compound 203:
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Classifications
Condensed systems · CPC title
having only hydrogen or hydrocarbon radicals attached to the substituent nitrogen atom · CPC title
bridged by heteroatoms, e.g. N, P, Si or B · CPC title
with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms · CPC title
containing two nitrogen atoms as heteroatoms · CPC title
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- What does patent US2016308157A1 cover?
- Provided is an organic light-emitting device including a first electrode, a second electrode disposed opposite to the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron-transporting layer disposed between the emission layer and the second electrode. The electron-transporting layer includes a first electron-transporting material and …
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10K50/11. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 20 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).