Electroluminescence device

Details Electroluminescence device Electroluminescence device

1989-12-27

1992-02-04

Seidleck, James J.

Stock material or miscellaneous articles

Composite

Of inorganic material

313504, 313507, 428917, H01J 162

Patent

active

050859463

ABSTRACT:
An electroluminesence device comprising an organic compound having positive-hole-transporting property and a fluorescent organic compound having electron-transporting property in its luminescence layer interposed between a pair of electrodes. When the electroluminescence device comprises a cyclopentadiene derivative having formula (I) as the fluorescent organic compound, the device can emit blue light which has not been attained so far: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each independently represent hydrogen, an alkyl group having 1 to 10 carbon atoms, which may have a substituent, an alicyclic group having 5 to 6 carbon atoms, an alkoxyl group having 1 to 6 carbon atoms, which may have a substituent, a halogen, an acyl group, a hydroxyl group, an aryloxy group, an aryl group which may have a substituent, an allyl group, or an aldehyde group.

REFERENCES:
patent: 4720432 (1988-01-01), Van Slyke et al.
patent: 4769242 (1988-09-01), Tang et al.
patent: 4885211 (1989-12-01), Tang et al.

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