Organic electroluminescent device

• US 6,703,147 B2
• Filed: 08/31/2001
• Issued: 03/09/2004
• Est. Priority Date: 09/01/2000
• Status: Expired due to Term

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Fujii, Hiroyuki
• Primary Examiner(s): YAMNITZKY, MARIE ROSE
• Application Number:
  US09/943,877
• Publication Number:
  US 20030127970A1
• Time in Patent Office: 921 Days
• Field of Search: 428/690, 428/917, 313/504, 313/506
• US Class Current: 428/690
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: H10K 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/322 comprising boron
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/60 Organic compounds having low molecular weight H10K85/10 - H10K85/50 take precedence
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

An organic electroluminescent device includes an organic luminescent substance interposed between a pair of mutually opposed electrodes, wherein the device contains at least a compound having the following general formula (VI) as the organic luminescent substance:

(in the formula, the reference character M denotes a metal, and R1, R2, R3, and R4 separately denote substituents having the following general formula (VII) and may be similar or dissimilar to one another):

(in the formula, the reference character R5 denotes hydrogen or an optional substituent group except methyl, and R6 to R10 separately denote hydrogen or optional substituent groups).

Claims

1. An organic electroluminescent device comprising an organic luminescent substance interposed between a pair of mutually opposed electrodes, wherein the device contains at least a compound having the following general formula (VI) as said organic luminescent substance:

(in the formula, the reference character M denotes a metal, and R1, R2, R3, and R4 separately denote substituents having the following general formula (VII) and may be similar or dissimilar to one another);

(in the formula, the reference character R5 denotes hydrogen or an optional substituent group except methyl, and R6 to R10 separately denote hydrogen or optional substituent groups).

2. The organic electroluminescent device as claimed in claim 1, wherein the metal element M in the general formula (VI) is sodium, potassium, rubidium, or cesium.

3. The organic electroluminescent device as claimed in claim 1, wherein the metal M in the general formula (VI) is potassium.

4. An organic electroluminescent device comprising first and second organic luminescent substances interposed between a pair of mutually opposed electrodes, wherein the device contains a compound having the following general formula (VI) as said first organic luminescent substance:

(in the formula, the reference character M denotes a metal, and R1, R2, R3, and R4 separately denote substituents having the following general formula (VII) and may be similar or dissimilar to one another);

(in the formula, the reference characters R5 to R10 separately denote hydrogen or optional substituent groups); and

the device further contains a compound having the following general formula (I) as said second organic luminescent substance;

(in the formula, the reference character n is an integer of 3 or higher, and hydrogen bonded to any one of the aromatic ring rings may be substituted with an optional substituent).

5. The organic electroluminescent device as claimed in claim 4, wherein the metal element M in the general formula (VI) is sodium, potassium, rubidium, or cesium.

6. The organic electroluminescent device as claimed in claim 4, wherein the metal M in the general formula (VI) is potassium.

7. An Organic electroluminescent device comprising an organic luminescent substance interposed between a pair of mutually opposed electrodes, wherein the organic luminescent substance contains at least a compound having the following general formula (VI):

(in the formula, the reference character M denotes a metal, and R1, R2, R3, and R4 separately denote substituents having the following general formula (VII) and may be similar or dissimilar to one another);

(in the formula, the reference characters R5 to R10 separately denote hydrogen or optional substituent groups, and a compound having the following general formula (IV);

(in the formula, the reference characterB Aa, Ab, and Az separately denote substituents with aromatic properties and may be similar or dissimilar to one another).

8. The organic electroluminescent device as claimed in claim 7, wherein the metal M in the general formula (VI) is sodium, potassium, rubidium, or cesium.

9. The organic electroluminescent device as claimed in claim 7, wherein the metal M in the general formula (VI) is potassium.

10. An organic electroluminescent device comprising organic luminescent substances interposed between a pair of mutually opposed electrodes, wherein the organic luminescent substances comprise an aromatic amine and at least a compound having the following general formula (VI):

(in the formula, the reference character M denotes a metal, and R1, R2, R3, and R4 separately denote substituents having the following general formula (VII) and may be similar or dissimilar to one another);

(in the formula, the reference characters R5 to R10 separately denote hydrogen or optional substituent groups).

11. The organic electroluminescent device as claimed in claim 10, wherein said aromatic amine is a compound having the following general formula (III):

(in the formula, the reference character m is an integer of 1 or higher, and hydrogen bonded to any one or more of the aromatic rings may be substituted with an optional substituent).

12. The organic electroluminescent device as claimed in claim 11, wherein the reference character m is an integer not lower than 1 and not higher than 12 in the general formula (III).

13. The organic electroluminescent device as claimed in claim 10, wherein said aromatic amine is a compound having the following general formula (VIII):

(in the formula, the reference character m is an integer of 1 or higher.

14. The organic electroluminescent device as claimed in claim 13, wherein the reference character m is an integer not lower than 1 and not higher than 12 in the general formula (VIII).

15. The organic electroluminescent device as claimed in claim 10, wherein said aromatic amine is a compound having the following general formula (IX):

(in the formula, the reference character m is an integer of 1 or higher).

16. The organic electroluminescent device as claimed in claim 15, wherein the reference character m is an integer not lower than 1 and not higher than 12 in the general formula (IX).

17. The organic electroluminescent device as claimed in claim 10, wherein the metal M in the general formula (VI) is sodium, potassium, rubidium, or cesium.

18. The organic electroluminescent device as claimed in claim 10, wherein the metal M in the general formula (VI) is potassium.