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:
May. 31, 2005
Filed:
Jan. 16, 2001
You Kondoh, Yamato, JP;
Satoshi Watanabe, Kanagawa, JP;
Yawara Kaneko, Chigasaki, JP;
Shigeru Nakagawa, Goleta, CA (US);
Norihide Yamada, Tokyo, JP;
You Kondoh, Yamato, JP;
Satoshi Watanabe, Kanagawa, JP;
Yawara Kaneko, Chigasaki, JP;
Shigeru Nakagawa, Goleta, CA (US);
Norihide Yamada, Tokyo, JP;
Lumileds Lighting U.S., LLC, San Jose, CA (US);
Abstract
A light emitting device is constructed on a substrate. The device includes an n-type semiconductor layer in contact with the substrate, an active layer for generating light, the active layer being in electrical contact with the n-type semiconductor layer. A p-type semiconductor layer is in electrical contact with the active layer, and a p-electrode is in electrical contact with the p-type semiconductor layer. The p-electrode includes a layer of silver in contact with the p-type semiconductor layer. A bonding layer is formed overlying the silver layer to make an electrical connection to the silver layer. The silver layer may be thin and transparent or thicker (greater than 20 nm) and reflective.