Organic thin film electroluminescent device

Details Organic thin film electroluminescent device Organic thin film electroluminescent device

1991-07-11

1993-07-27

Yusko, Donald J.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313504, 313506, 313463, 428690, 428691, 428917, H01J 162

Patent

active

052313298

ABSTRACT:
An organic thin film electroluminescent device is composed of an electron transport layer, a hole transport layer and a transparent electrode. The electron transport layer is constituted of an electron conducting polymer represented by the formula (I) ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.2 is a hydrogen atom, an alkyl or alkoxy group having 1 to 4 carbon atoms, an aryl group, an aryloxy group, a thioether group, an amino group, a halogen atom, an aldehyde group, a cyano group, a nitro group or a hydroxyl group, x is an integer of 1 to 6, on the condition that, if x is an integer of 2 to 6, R.sup.2 may be the same or different, and n is an integer not less than 2.

REFERENCES:
patent: 4539507 (1985-09-01), Vanslyke et al.
patent: 4769292 (1988-09-01), Tang et al.
Adachi et al., Jap. J. of Appl. Phys., 27:L269-L271, Feb. 1988.
Tang et al., Appl. Phys. Lett., 51:913-915, Jul. 1987.

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