Encapsulated organic light emitting device
First Claim
1. A light emitting device comprising an organic light emitting material sandwiched between first and second electrode, the first electrode contiguous to a transparent substrate and the second electrode contiguous to a protective covering, the second electrode comprising an alkali metal, alkaline earth metal or rare earth metal and the protective covering comprising (a) a first layer of gold, silver, indium, aluminum or a transition metal directly on and in contact with the second electrode, (b) a second layer of dielectric material directly on and in contact with the first layer and selected from the group consisting of silicon nitride, silicon oxide, germanium oxide and zirconium oxide, the second layer having a thickness in the range of 50-500 nanometers, and (c) a third layer of hydrophobic polymer directly on and in contact with the second layer.
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Accused Products
Abstract
The invention relates to an encapsulated organic light emitting device having an improved protective covering comprising a first layer of passivating metal, a second layer of an inorganic dielectric material and a third layer of polymer.
487 Citations
6 Claims
- 1. A light emitting device comprising an organic light emitting material sandwiched between first and second electrode, the first electrode contiguous to a transparent substrate and the second electrode contiguous to a protective covering, the second electrode comprising an alkali metal, alkaline earth metal or rare earth metal and the protective covering comprising (a) a first layer of gold, silver, indium, aluminum or a transition metal directly on and in contact with the second electrode, (b) a second layer of dielectric material directly on and in contact with the first layer and selected from the group consisting of silicon nitride, silicon oxide, germanium oxide and zirconium oxide, the second layer having a thickness in the range of 50-500 nanometers, and (c) a third layer of hydrophobic polymer directly on and in contact with the second layer.
Specification
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- Resources
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Current AssigneeInnoLux Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsKarg, Siegfried, Haskal, Eliav, Scott, John Campbell, Salem, Jesse Richard
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Primary Examiner(s)O'Shea, Sandra
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Assistant Examiner(s)HAYNES, MACK NELSON
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Application NumberUS08/820,219Time in Patent Office910 DaysField of Search313/503-504, 313/505, 313/506-507, 313/509-510, 313/512US Class Current313/504CPC Class CodesH10K 50/8445 multilayered coatings havin...
