Title:
ORGANIC ELECTROLUMINESCENT ELEMENTS
Document Type and Number:
WIPO Patent Application WO/1994/022974
Kind Code:
A1
Abstract:
The first organic electroluminescent element is provided with a low-molecular 1,2,4-triazole derivative layer; the second element has a carrier transport control layer for selectively transporting holes or electrons, which layer is interposed between an electron transport layer and a hole transport layer; the third element comprises a laminate of an electron transport with a hole-transport luminescent layer wherein a coloring matter is dispersed in a polymer on the molecular level; the fourth element is provided with a layer containing a high-molecular 1,2,4-triazole derivative as the hole transport material; and the fifth element is provided with a layer wherein a hole transport material is dispersed in a high-molecular 1,2,4-triazole derivative on the molecular level. These elements are excellent in luminous efficacy, luminance and stability, and permit blue luminescence, primary multi-color luminescence, and white luminescence.
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Inventors:
KIDO JUNJI (JP)
Application Number:
PCT/JP1994/000435
Publication Date:
October 13, 1994
Filing Date:
March 17, 1994
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
KIDO JUNJI (JP)
KIDO JUNJI (JP)
International Classes:
C09K11/06; H01L51/30; H01L51/50; H05B33/12; H05B33/14; H01L51/00; (IPC1-7): C09K11/06
Domestic Patent References:
| WO1992000515A1 | 1992-01-09 |
Foreign References:
| JPH04308689A | 1992-10-30 | |||
| GB1393750A | 1975-05-14 | |||
| JPH04298989A | 1992-10-22 | |||
| JPH04212286A | 1992-08-03 | |||
| JPH04237993A | 1992-08-26 | |||
| JPH04363894A | 1992-12-16 |
Other References:
See also references of EP 0647694A4
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