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. 04, 2020
Filed:
Mar. 08, 2017
Alpad Corporation, Chiyoda-ku, JP;
Hideyuki Tomizawa, Ota, JP;
Akihiro Kojima, Nonoichi, JP;
Miyoko Shimada, Hakusan, JP;
Yosuke Akimoto, Nonoichi, JP;
Hideto Furuyama, Yokohama, JP;
Yoshiaki Sugizaki, Fujisawa, JP;
ALPAD Corporation, Chiyoda-ku, JP;
Abstract
The semiconductor layer has a first surface, a second surface provided on opposite side from the first surface, and a third surface provided on the opposite side from the first surface with a step difference with respect to the second surface. The semiconductor layer includes a light emitting layer between the first surface and the third surface. The first electrode is in contact with the second surface. The second electrode is provided in a plane of the third surface. The second electrode includes a contact part in contact with the third surface and an end part not in contact with the third surface. The second electrode contains silver. The insulating film is provided between the end part of the second electrode and the third surface. A semiconductor light emitting device having a high light extraction efficiency is provided.