Light-emitting device

• US 20060073359A1
• Filed: 09/26/2005
• Published: 04/06/2006
• Est. Priority Date: 09/27/2004
• Status: Active Grant

• Current Assignee: UDC Ireland Limited (Universal Display Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Ise, Toshihiro, Igarashi, Tatsuya, Sano, Satoshi
• Granted Patent: US 7,732,606 B2
• Time in Patent Office: Days
• US Class Current: 428/690
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: C07F 15/0093 without a metal-carbon linkage
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/346 comprising platinum
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes, in which the organic layer contains at least one platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I):

• • wherein Z¹ represents a nitrogen-containing heterocycle coordinated to the platinum through a nitrogen atom; L¹ represents a single bond or a linking group; R¹, R³ and R⁴ each independently represent a hydrogen atom or a substituent; and R² represents a substituent.

Claims

1. An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes,

wherein the organic layer contains at least one platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I):

2. The organic electroluminescent device according to claim 1,

wherein the platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I) is a platinum complex compound represented by formula (II):

3. The organic electroluminescent device according to claim 2,

wherein the platinum complex compound represented by formula (II) is a platinum complex compound represented by formula (III):

4. The organic electroluminescent device according to claim 3,

wherein the platinum complex compound represented by formula (III) is a platinum complex compound represented by formula (IV):

5. The organic electroluminescent device according to claim 1,

wherein the platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I) is a compound represented by formula (V):

6. The organic electroluminescent device according to claim 1,

wherein at least one of the platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I) is contained in the light-emitting layer.

7. The organic electroluminescent device according to claim 1,

wherein at least one of the platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I) and at least one host material are contained in the light-emitting layer.

8. A compound represented by formula (V):