Metal coordination compound, luminescence device and display apparatus

• US 6,991,857 B2
• Filed: 11/29/2001
• Issued: 01/31/2006
• Est. Priority Date: 12/01/2000
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Furugori, Manabu, Tsuboyama, Akira, Moriyama, Takashi, Igawa, Satoshi, Okada, Shinjiro, Mizutani, Hidemasa, Miura, Seishi, Takiguchi, Takao, Kamatani, Jun, Noguchi, Koji
• Primary Examiner(s): YAMNITZKY, MARIE ROSE
• Application Number:
  US09/995,608
• Publication Number:
  US 20030054198A1
• Time in Patent Office: 1,524 Days
• Field of Search: 428/690, 428/917, 313/504, 313/506, 257/40, 257/102, 257/103, 252/301.16, 546/4, 546/6, 546/10, 549/3
• US Class Current: 428/690
• CPC Class Codes: C07F 15/0033 Iridium compounds
• CPC Class Codes: C07F 15/006 Palladium compounds
• CPC Class Codes: C07F 15/0073 Rhodium compounds
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/146 poly N-vinylcarbazol; Derivatives thereof
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/346 comprising platinum
• CPC Class Codes: H10K 85/361 Polynuclear complexes, i.e. complexes comprising two or more metal centers
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

An organic EL device includes a luminescence layer containing, as a luminescent material allowing a high-luminescence and high-efficiency luminescence for a long period of time, a metal coordination compound represented by the following formula (1): LmML′n, wherein M denotes Ir, Pt, Rh or Pd; L denotes a bidentate ligand; L′ denotes a bidentate ligand different from L; m is an integer of 1, 2 or 3; and n is an integer of 0, 1 or 2 with the proviso that the sum of m and n is 2 or 3. The partial structure MLm is represented by a formula (2) or a formula (3) shown below, and the partial structure ML′n is represented by a formula (4) or a formula (5) shown below:
wherein CyN1, CyN2 and CyN3 independently denote a substituted or unsubstituted cyclic group containing a nitrogen atom connected to M; CyN4 denotes a cyclic group containing 8-quinoline or its derivative having a nitrogen atom connected to M; CyC1, CyC2 and CyC3 independently denote a substituted or unsubstituted cyclic group containing a carbon atom connected to M, with the proviso that the metal coordination compound is represented by the formula (2) when n is 0.

Claims

1. A metal coordination compound represented by the following formula:

wherein X is C═

O.

2. An organic luminescence device comprising:

at least a pair of electrodes; and

an organic layer, which is disposed between the pair of electrodes and which comprises a metal coordination compound according to claim 1.

3. A display apparatus comprising a display portion, which comprises an organic luminescence device according to claim 2.