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US Patent 7994515 Light emitting device with high light extraction efficiency

Patent 7994515 was granted and assigned to Foxsemicon Integrated Technology on August, 2011 by the United States Patent and Trademark Office.

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Current Assignee
Foxsemicon Integrated Technology
Foxsemicon Integrated Technology
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7994515
Date of Patent
August 9, 2011
Patent Application Number
12344647
Date Filed
December 29, 2008
Patent Primary Examiner
‌
Zandra Smith
Patent abstract

An exemplary solid-state light emitting device includes a substrate, a light emitting structure, a first electrode and a second electrode have opposite polarities with each other. The light emitting structure includes a first-type semiconductor layer, a second-type semiconductor layer and an active layer between the first-type semiconductor layer and the second-type semiconductor layer. The first electrode electrically is connected with the first-type semiconductor layer. The first electrode includes a first contact pad and a current induced electrode spaced apart and insulated from each other. The second electrode has an opposite polarity with respect to the first electrode. The second electrode includes a transparent conductive layer formed on and electrically connected with the second-type semiconductor layer and a metallic conductive layer formed on the transparent conductive layer and in electrical contact therewith.

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