Organic electroluminescence device with oligomers
Patent 5142343 Issued on August 25, 1992. Estimated Expiration Date: 
March 21, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 21, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectroluminescent device with organic luminescent medium Thiophene derivative polymer and a polymer composition thereof Conductor device Patent #: 4939556 InventorsAssigneeApplicationNo. 667386 filed on 03/21/1991US Classes:257/103, With particular semiconductor material257/40, ORGANIC SEMICONDUCTOR MATERIAL257/E51.029Heteroaromatic compound comprising sulfur or selene (e.g., polythiophene) (EPO)ExaminersPrimary: Mintel, WilliamAttorney, Agent or FirmForeign Patent References
International ClassH01L 033/00Foreign Application Priority Data1989-08-18 JPAbstractAn organic electroluminescence device having a high brightness of 50 cd/m2 or more and a luminous efficiency of 0.02 lm/W or more, wherein an organic semiconductor zone and an organic insulator zone are sandwiched between electrodes, the organic insulator zone contains an organic light emitting area, and the above organic semiconductor zone comprises electroconducting oligomer. The organic electroluminescence device is capable of emitting light in a plane, shows a stable emission of light, and further can be easily prepared.Other References
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