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:
Jan. 11, 2022
Filed:
Dec. 26, 2019
Nikkiso Co., Ltd., Tokyo, JP;
Scivax Corporation, Kawasaki Kanagawa, JP;
Noritaka Niwa, Hakusan Ishikawa, JP;
Tetsuhiko Inazu, Hakusan Ishikawa, JP;
Yasumasa Suzaki, Kawasaki Kanagawa, JP;
Akifumi Nawata, Kawasaki Kanagawa, JP;
Satoru Tanaka, Kawasaki Kanagawa, JP;
NIKKISO CO., LTD., Tokyo, JP;
SCIVAX CORPORATION., Kanagawa, JP;
Abstract
A semiconductor light emitting device includes a light extraction layer having a light extraction surface. Multiple cone-shaped parts formed in an array are provided on the light extraction surface. The cone-shaped part has a first portion having a first angle of inclination of a side surface and a second portion having a second angle of inclination of a side surface smaller than the first angle. The second portion is closer to an apex of the cone-shaped part than the first portion and has a larger height than the first portion.