Title:
ORGANIC ELECTROLUMINESCENCE ELEMENT
Document Type and Number:
WIPO Patent Application WO/1998/051757
Kind Code:
A1
Abstract:
An organic electroluminescence element which has a luminous layer made of at least an organic material and formed between a hole injection electrode and an electron injection electrode. The host material of the luminous layer is doped with a dopant having three or more condensed rings. The difference between the highest occupied level in the host material and that of the dopant is -0.3 eV to +0.3 eV.
Inventors:
SANO TAKESHI (JP)
NISHIO YOSHITAKA (JP)
NISHIO YOSHITAKA (JP)
Application Number:
PCT/JP1998/001947
Publication Date:
November 19, 1998
Filing Date:
April 27, 1998
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
SANO TAKESHI (JP)
NISHIO YOSHITAKA (JP)
SANO TAKESHI (JP)
NISHIO YOSHITAKA (JP)
International Classes:
C09K11/06; H01L33/48; H01L51/30; H01L51/50; H01L51/00; (IPC1-7): C09K11/06; H01L33/00
Foreign References:
| JPH0765958A | 1995-03-10 |
Other References:
TATSUAKI WADA, ET AL.: "INFLUENCE OF NAPHTHACENE DOPING ON THE ELECTRICAL AND LIGHT-EMITTING BEHAVIOR OF 8-HYDROXYQUINOLINE ALUMINUM BASED ELECTROLUMINESCENT DEVICES", APPLIED SURFACE SCIENCE, ELSEVIER, AMSTERDAM, NL, vol. 65/66, 1 January 1993 (1993-01-01), AMSTERDAM, NL, pages 376 - 380, XP002911747, ISSN: 0169-4332, DOI: 10.1016/0169-4332(93)90689-9
FATEMI D J, ET AL.: "HIGHLY FLUORESCENT MOLECULAR ORGANIC COMPOSITES FOR LIGHT-EMITTING DIODES", SYNTHETIC METALS, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 85, 1 January 1997 (1997-01-01), CH, pages 1225 - 1228, XP002911748, ISSN: 0379-6779, DOI: 10.1016/S0379-6779(97)80215-9
YUJI HAMADA, ET AL.: "INFLUENCE OF THE EMISSION SITE ON THE RUNNING DURABILITY OF ORGANICELECTROLUMINESCENT DEVICES", JAPANESE JOURNAL OF APPLIED PHYSICS, JAPAN SOCIETY OF APPLIED PHYSICS, JP, vol. 34, 1 January 1995 (1995-01-01), JP, pages 824 - 826, XP002911749, ISSN: 0021-4922, DOI: 10.1143/JJAP.34.L824
YOSHIDA M, ET AL.: "ELECTROLUMINESCENCE IN MOLECULARLY DOPED CONDUCTING POLYMER", SYNTHETIC METALS, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 71, 1 January 1995 (1995-01-01), CH, pages 2111/2112, XP002911750, ISSN: 0379-6779, DOI: 10.1016/0379-6779(94)03191-8
See also references of EP 1020510A4
FATEMI D J, ET AL.: "HIGHLY FLUORESCENT MOLECULAR ORGANIC COMPOSITES FOR LIGHT-EMITTING DIODES", SYNTHETIC METALS, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 85, 1 January 1997 (1997-01-01), CH, pages 1225 - 1228, XP002911748, ISSN: 0379-6779, DOI: 10.1016/S0379-6779(97)80215-9
YUJI HAMADA, ET AL.: "INFLUENCE OF THE EMISSION SITE ON THE RUNNING DURABILITY OF ORGANICELECTROLUMINESCENT DEVICES", JAPANESE JOURNAL OF APPLIED PHYSICS, JAPAN SOCIETY OF APPLIED PHYSICS, JP, vol. 34, 1 January 1995 (1995-01-01), JP, pages 824 - 826, XP002911749, ISSN: 0021-4922, DOI: 10.1143/JJAP.34.L824
YOSHIDA M, ET AL.: "ELECTROLUMINESCENCE IN MOLECULARLY DOPED CONDUCTING POLYMER", SYNTHETIC METALS, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 71, 1 January 1995 (1995-01-01), CH, pages 2111/2112, XP002911750, ISSN: 0379-6779, DOI: 10.1016/0379-6779(94)03191-8
See also references of EP 1020510A4
Attorney, Agent or Firm:
Matsukawa, Katsuaki (3-3 Kyomachibori 1-chome, Nishi-k, Osaka-shi Osaka, JP)
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