Organic metal compound, organic light emitting diode and organic light emitting device having the compound

Patent metadata

Field	Value
Publication number	US-12540152-B2
Application number	US-202117499530-A
Country	US
Kind code	B2
Filing date	Oct 12, 2021
Priority date	Dec 15, 2020
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

The present disclosure relates to an organic metal compound having the following structure of Formula 1, an organic light emitting diode (OLED) and an organic light emitting device that includes the organic metal compound. The OLED and the organic light emitting device including the organic metal compound can improve their luminous efficiency, luminous color purity and lifespan. Ir(LA)m(LB)n  [Formula 1]

First claim

What is claimed is:

1 . An organic light emitting diode comprising:
a first electrode; a second electrode facing the first electrode; and an emissive layer disposed between the first and second electrodes and including at least one emitting material layer, wherein the at least one emitting material layer includes an organic metal compound selected from the following compounds:

wherein the at least one emitting material includes a host and a dopant, wherein the host includes a compound that is selected from 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP), 3,3′-bis(N-carbazolyl)-1,1′-biphenyl (mCBP), and a combination thereof, and the dopant includes the organic metal compound.

2 . The organic light emitting diode of claim 1 , wherein the emissive layer includes a first emitting part disposed between the first and second electrodes and a second emitting part disposed between the first emitting part and the second electrode and a first charge generation layer disposed between the first and second emitting parts, wherein the first emitting part includes a first emitting material layer and the second emitting part includes a second emitting material layer, and wherein at least one of the first and second emitting material layers includes the organic metal compound.

3 . The organic light emitting diode of claim 2 , wherein the second emitting material layer includes a lower emitting material layer disposed between the first charge generation layer and the second electrode and an upper emitting material layer disposed between the lower emitting material layer and the second electrode, and wherein one of the lower emitting material layer and the upper emitting material layer includes the organic metal compound.

4 . The organic light emitting diode of claim 2 , the emissive layer further includes a third emitting part disposed between the second emitting part and the second electrode and including a third emitting material layer and a second charge generation layer disposed between the second and third emitting parts.

5 . An organic light emitting device comprising:
a substrate; and an organic light emitting diode of claim 1 over the substrate.

6 . The organic light emitting diode of claim 1 , wherein the organic metal compound includes one compound selected from:

7 . The organic light emitting diode of claim 1 , wherein the organic metal compound includes one compound selected from:

8 . The organic light emitting diode of claim 1 , wherein the organic metal compound includes one compound selected from:

Assignees

• Lg Display Co Ltd
• Rohm & Haas Elect Materials Korea Ltd
• Dupont Specialty Materials Korea Ltd

Inventors

• Choung Ku-Sun
• Park Hee-Jun
• Kang Hee-Ryong
• Park Kyoung-Jin
• Kim Hyun
• Lee Ga-Won
• Yoon Seung-Hyun

Classifications

• H10K2101/40

  Interrelation of parameters between multiple constituent active layers or sublayers, e.g. HOMO values in adjacent layers · CPC title

• H10K2101/30

  Highest occupied molecular orbital [HOMO], lowest unoccupied molecular orbital [LUMO] or Fermi energy values · CPC title

• H10K2101/10

  Triplet emission · CPC title

• H10K50/13

  comprising stacked EL layers within one EL unit · CPC title

• H10K50/11 Primary

  characterised by the electroluminescent [EL] layers · CPC title