Direct current electroluminescent devices

Details Direct current electroluminescent devices Direct current electroluminescent devices

1976-07-22

1979-02-20

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

29 2511, 313509, H05B 3302, H05B 3326

Patent

active

041409370

ABSTRACT:
In an electroluminescent device comprising a layer of electroluminescent material disposed between a pair of electrodes, and a transparent substrate, the electrode between the substrate and the layer of electroluminescent material is transparent and has a surface portion remote from the substrate having properties substantially confining current flow therethrough to discrete regions thereof. In one form the transparent electrode has a first layer adjacent the substrate of electrically-conductive material and a second layer of semiconducting or insulating material. In another form of the transparent electrode this electrode is of a metal oxide and the discrete regions are in a substantially pure form of that metal.

REFERENCES:
patent: 3295002 (1966-12-01), Amans
patent: 3315111 (1967-04-01), Jaffe et al.
patent: 3414490 (1968-12-01), Thornton, Jr.
patent: 3854070 (1974-12-01), Vlasenko et al.
IBM Technical Disclosure Bulletin, vol. 17, No. 1, p. 286, Jun. 1974, Article Entitled "Field-Effect Viewing Storage Panel Configuration with High-Resolution Capabilities," by Pennington et al.

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