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:
Mar. 04, 2025
Filed:
Jun. 22, 2021
Applicant:
Epistar Corporation, Hsinchu, TW;
Inventors:
Heng-Ying Cho, Hsinchu, TW;
Li-Yu Shen, Hsinchu, TW;
Chih-Hao Chen, Hsinchu, TW;
Keng-Lin Chuang, Hsinchu, TW;
Assignee:
EPISTAR CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/44 (2010.01); H01L 27/15 (2006.01); H01L 33/02 (2010.01); H01L 33/10 (2010.01); H01L 33/58 (2010.01);
U.S. Cl.
CPC ...
H01L 33/44 (2013.01); H01L 33/10 (2013.01);
Abstract
A light-emitting device comprises a semiconductor stack emitting a light with a peak wavelength λ; and a light field adjustment layer formed on the semiconductor stack, wherein the light field adjustment layer comprises a plurality of first layers and a plurality of second layers alternately stacked on top of each other, the plurality of first layers each comprises a first optical thickness, and the plurality of second layers each comprises a second optical thickness.