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:
Nov. 19, 2019
Filed:
Jul. 24, 2018
Nichia Corporation, Anan-shi, Tokushima, JP;
Yasuo Kato, Anan, JP;
NICHIA CORPORATION, Anan-shi, JP;
Abstract
A lead frame includes a base material and two or more silver-containing layers. The base material is composed of a metal. The two or more silver-containing layers are stacked on the base material. The two or more silver-containing layers includes an uppermost silver-containing layer containing sulfur, and a lower silver-containing layer. The lower silver-containing layer contains no selenium or the lower silver-containing layer is composed substantially only of silver. A method for manufacturing a light emitting device includes: preparing a lead frame; preparing a package including the lead frame; and mounting a light emitting element on the package. The lead frame is prepared by: providing a base material; forming an underlying metal on the base material by plating to form an underlayer; and forming two or more silver-containing stacked layers on the underlayer, the two or more silver-containing stacked layers including an uppermost silver-containing layer containing sulfur.