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:
Sep. 22, 2020
Filed:
Apr. 29, 2019
Applicant:
Epistar Corporation, Hsinchu, TW;
Inventors:
Peng Ren Chen, Hsinchu, TW;
Yu-Shan Chiu, Hsinchu, TW;
Wen-Hsiang Lin, Hsinchu, TW;
Shih-Wei Wang, Hsinchu, TW;
Chen Ou, Hsinchu, TW;
Assignee:
EPISTAR CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/22 (2010.01); H01L 33/12 (2010.01); H01L 33/06 (2010.01); H01L 33/02 (2010.01); H01L 33/00 (2010.01); H01L 33/32 (2010.01);
U.S. Cl.
CPC ...
H01L 33/22 (2013.01); H01L 33/007 (2013.01); H01L 33/025 (2013.01); H01L 33/06 (2013.01); H01L 33/12 (2013.01); H01L 33/32 (2013.01);
Abstract
A light-emitting device, includes a substrate structure, including a base portion having a surface and a plurality of protrusions formed on the base portion; a buffer layer covering the plurality of protrusions and the surface; and III-V compound semiconductor layers formed on the buffer layer; wherein one of the plurality of protrusions has a height not greater than 1.5 μm; wherein the light-emitting device has a full width at half maximum (FWHM) of smaller than 250 arcsec in accordance with a (102) XRD rocking curve.