Organic electroluminescent element

• US 5,529,853 A
• Filed: 03/01/1994
• Issued: 06/25/1996
• Est. Priority Date: 03/17/1993
• Status: Expired due to Term

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Sano, Takeshi, Nishio, Yoshitaka, Shibata, Kenichi, Fujita, Masayuki, Hamada, Yuji, Fujii, Takanori
• Primary Examiner(s): Nold, Charles R.
• Application Number:
  US08/203,942
• Time in Patent Office: 847 Days
• Field of Search: 428/690, 428/691, 428/917, 313/503, 313/504, 313/507
• US Class Current: 428/690
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• 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 85/10 Organic polymers or oligomers
• CPC Class Codes: H10K 85/341 Transition metal complexes, e.g. Ru(II)polypyridine complexes H10K85/331 takes precedence
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

The present invention provides an organic EL element improved in durability. The organic EL element comprises a hole-injecting electrode and an electron-injecting electrode, and at least a film made of a luminous material therebetween, wherein the luminous material is one of a metal complex polymer, an inner complex salt having two or more ligands, and 10-hydroxybenzo [h] quinoline-metal complex.

Claims

1. An EL element comprising a hole-injecting electrode, an electron-injecting electrode, and an organic film layer including at least an organic luminous material formed between the hole and electron-injecting electrodes, characterized in that the organic film layer is made of 10-hydroxybenzo [h] quinoline--metal complex expressed by Chemical Formula 111 and Chemical Formula 112 ##STR48##

2. The EL element of claim 1, wherein the organic film layer consists of an organic luminous layer and an organic hole-transport layer, and the organic luminous layer is made of the 10-hydroxybenzo [h quinoline--metal complex.

3. The EL element of claim 2, wherein the 10-hydroxybenzo [h] quinoline--metal complex composing the organic luminous layer is a compound expressed by Chemical Formula 113 ##STR49##

4. The EL element of claim 3, wherein the organic hole-transport layer is made of a diamine derivative.

5. The EL element of claim 4, wherein the diamine derivative is a compound expressed by Chemical Formula 114 ##STR50##

6. The EL element of claim 2, wherein the organic luminous layer consists of a dopant and a base material, and the 10-hydroxybenzo [h] quinoline--metal complex serves as the dopant.

7. The EL element of claim 2, wherein the organic luminous layer consists of a dopant and a base material, and the 10-hydroxybenzo [h] quinoline--metal complex serves as the base material.

8. The EL element of claim 7, wherein the 10-hydroxybenzo [h] quinoline--metal complex serving as the base material is a compound expressed by Chemical Formula 115 ##STR51##

9. The EL element of claim 8, wherein phtaloperinone expressed by Chemical Formula 116 serves as the dopant ##STR52##

10. The EL element of claim 9, wherein the organic hole-transport layer is made of a diamine derivative.

11. The EL element of claim 10, wherein the diamine derivative is a compound expressed by Chemical Formula 117 ##STR53##

12. The EL element of claim 1, wherein the organic film layer consists of an organic luminous layer and an organic electron-transport layer.

13. The EL element of claim 2, wherein the organic film layer is made of the 10-hydroxybenzo [h] quinoline--metal complex.

14. The EL element of claim 13, wherein the organic luminous layer consists of a dopant and a base material, and the 10-hydroxybenzo [h] quinoline--metal complex serves as the dopant.

15. The EL element of claim 13, wherein the organic luminous layer consists of a dopant and a base material, and the 10-hydroxybenzo [h] quinoline--metal complex serves as the base material.

16. The EL element of claim 12, wherein the organic electron-transport layer is made of the 10-hydroxybenzo [h] quinoline--metal complex.

17. The EL element of claim 1, wherein the organic film layer consists of an organic luminous layer, an organic hole-transport layer, and an organic electron-transport layer.

18. The EL element of claim 17, wherein the organic luminous layer is made of the 10-hydroxybenzo [h] quinoline--metal complex.

19. The EL element of claim 18, wherein the organic luminous layer consists of a dopant and a base material, and the 10-hydroxybenzo [h] quinoline--metal complex serves as the dopant.

20. The EL element of claim 18, wherein the organic luminous layer consists of a dopant and a base material, and the 10-hydroxybenzo [h] quinoline--metal complex serves as the base material.

21. The EL element of claim 17, wherein the organic electron-transport layer is made of the 10-hydroxybenzo [h] quinoline--metal complex.

22. The EL element of claim 21, wherein the 10-hydroxybenzo [h] quinoline--metal complex in the organic electron-transport layer is a compound expressed by Chemical Formula 118 ##STR54##

23. The EL element of claim 22, wherein the organic hole-transport layer is a diamine derivative.

24. The EL element of claim 23, wherein the diamine derivative is a compound expressed by Chemical Formula 119 ##STR55##

25. The EL element of claim 24, wherein the organic luminous layer is made of phtaloperinone expressed by Chemical Formula 120 ##STR56##

26. The EL element of claim 1, wherein a central metal of the 10-hydroxybenzo [h] quinoline--metal complex is selected from a group consisting of metals belonging to the second and the third groups of the periodic table.