Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1997-07-15
2000-10-10
Yaminitzky, Marie
Stock material or miscellaneous articles
Composite
Of inorganic material
428917, 313504, H05B 3314
Patent
active
061300012
ABSTRACT:
An organic EL device includes a cathode, an organic electroluminescent layer and an anode, laminated in sequence. The organic layer is composed of a continuous organic medium A.sub.x B.sub.y, where A and B are components capable of transporting electrons and holes, respectively, x represents the content of the A component with a value ranging from 0 adjacent the anode to 100% adjacent the cathode, and y represents the content of the B component with a value ranging from 0 adjacent the cathode to 100% adjacent the anode. The lifetime of the device is improved by the elimination of heterojunctions in the continuous organic medium and suppression of the re-crystallization tendency of the organic materials. At least one fluorescent dye or pigment is incorporated in the organic layer to improve efficiency and color of the luminescence.
REFERENCES:
patent: 5540999 (1996-07-01), Yamamoto et al.
patent: 5767624 (1998-06-01), Gordon, II et al.
patent: 5804322 (1998-09-01), Shi et al.
patent: 5925980 (1999-07-01), So et al.
Chen et al. "Recent Develop. in Mol. Org. EL Mat." Macromol. Symp. 124, pp. 1,6, (1997) (no month).
Briscoe Cynthia Gorsuch
Lee Hsing-Chung
Shi Song Q.
So Franky
Koch William E.
Motorola Inc.
Parsons Eugene A.
Yaminitzky Marie
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