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. 27, 2018
Filed:
Jul. 29, 2015
Marubun Corporation, Tokyo, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Riken, Saitama, JP;
Ulvac, Inc., Kanagawa, JP;
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Yukio Kashima, Tokyo, JP;
Eriko Matsuura, Tokyo, JP;
Mitsunori Kokubo, Shizuoka, JP;
Takaharu Tashiro, Shizuoka, JP;
Takafumi Ookawa, Shizuoka, JP;
Hideki Hirayama, Saitama, JP;
Noritoshi Maeda, Saitama, JP;
Masafumi Jo, Saitama, JP;
Ryuichiro Kamimura, Shizuoka, JP;
Yamato Osada, Shizuoka, JP;
Satoshi Shimatani, Kanagawa, JP;
MARUBUN CORPORATION, Tokyo, JP;
TOSHIBA KIKAI KABUSHIKI KAISHA, Tokyo, JP;
RIKEN, Saitama, JP;
ULVAC, INC., Kanagawa, JP;
TOKYO OHKA KOGYO CO., LTD., Kanagawa, JP;
Abstract
Provided is a deep ultraviolet LED with a design wavelength λ, including an Al reflecting electrode layer, an ultrathin metal layer, and a transparent p-AlGaN contact layer that are sequentially arranged from a side opposite to a substrate, and a photonic crystal periodic structure provided in the range of the thickness direction of the transparent p-AlGaN contact layer. The photonic crystal periodic structure has a photonic band gap.