US Patent 7977687 Light emitter device

Patent 7977687 was granted and assigned to National Chiao Tung University on July, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

National Chiao Tung University

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7977687

Date of Patent

July 12, 2011

Patent Application Number

12291396

Date Filed

November 7, 2008

Patent Primary Examiner

‌

Dung A. Le

Patent abstract

A light emitting device (LED) structure formed on a Group IV-based semiconductor substrate is provided. The LED structure includes a Group IV-based substrate, an AlN nucleation layer formed on the Group IV-based substrate, a GaN epitaxial layer formed on the AlN nucleation layer, a distributed Bragg reflector (DBR) multi-layer structure formed on the epitaxial layer, and an LED active layer formed on the DBR multi-layer structure.