Organometallic complex and organic light-emitting diodes and displays comprising the same

• US 20060216542A1
• Filed: 05/06/2005
• Published: 09/28/2006
• Est. Priority Date: 03/23/2005
• Status: Active Grant

• Current Assignee: Xiamen Tianma Display Technology Company Limited
• Original Assignee: AU Optronics Corporation
• Inventors: Wu, Pei-Chi
• Granted Patent: US 7,662,962 B2
• Time in Patent Office: Days
• US Class Current: 428/690
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/1044 containing two nitrogen atoms as heteroatoms
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 85/346 comprising platinum
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

An organometallic complex. The organometallic complex has formula (I)
, wherein M is a transition metal with an atomic number greater than 40 comprising Ir, Os, Pt, Pd, Re, or Ru,
is a substituted or non-substituted heterocyclic ring containing at least one nitrogen atom, and is any bidentate ligand comprising bipyridyl groups. The invention also provides an organic light-emitting diode and a display including the organometallic complex.

Claims

1. An organometallic complex having formula (I):

2. The organometallic complex as claimed in claim 1, wherein

3. The organometallic complex as claimed in claim 1, wherein substituted groups of the heterocyclic ring comprise aromatic groups, ester groups, alkyl groups, alkyl halide groups, or halogen atoms.

4. The organometallic complex as claimed in claim 1, wherein

5. The organometallic complex as claimed in claim 1, wherein the organometallic complex is a phosphorescent dopant.

6. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

7. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

8. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

9. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

10. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

11. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

12. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

13. The organometallic complex as claimed in claim 1, wherein the organometallic complex comprises

14. An organic light-emitting diode, comprising:

a cathode and an anode; and

an emitting layer installed between the cathode and anode, comprising an organometallic complex as claimed in claim 1.

15. The organic light-emitting diode as claimed in claim 14, further comprising an electron transport layer installed between the cathode and the emitting layer.

16. The organic light-emitting diode as claimed in claim 14, further comprising an electron injection layer installed between the cathode and the emitting layer.

17. The organic light-emitting diode as claimed in claim 14, further comprising a hole transport layer installed between the anode and the emitting layer.

18. The organic light-emitting diode as claimed in claim 14, further comprising a hole injection layer installed between the anode and the emitting layer.

19. A display, comprising:

an organic light-emitting diode as claimed in claim 14;

and

a drive circuit coupled to the organic light-emitting diode to drive the organic light-emitting diode.

20. The display as claimed in claim 19, wherein the drive circuit comprises a thin film transistor.