The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
Sep. 03, 2003
Applicants:
Chuan-cheng Tu, Taipei, TW;
Cheng-chung Young, Changhua, TW;
Pao-i Huang, Chiayi, TW;
Jen-chau Wu, Hsinchu, TW;
Inventors:
Chuan-Cheng Tu, Taipei, TW;
Cheng-Chung Young, Changhua, TW;
Pao-I Huang, Chiayi, TW;
Jen-Chau Wu, Hsinchu, TW;
Assignee:
United Epitaxy Company, Ltd., , TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/22 (2006.01); H01L 29/221 (2006.01); H01L 29/225 (2006.01); H01L 29/24 (2006.01); H01L 29/739 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light emitting device is disclosed. The light emitting device comprises a contact layer and an oxide transparent layer located directly on the contact layer. The contact layer has a stacked structure formed by alternately stacking a plurality of nitride semiconductor layers having a wider bandgap and a plurality of nitride semiconductor layers having a narrower bandgap.