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. 14, 2003
Filed:
Sep. 05, 2001
Nobuyoshi Tatoh, Itami, JP;
Shinya Nishina, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A method of manufacturing an optical semiconductor module, comprising joining an electronic cooling element to a bottom plate of an optical semiconductor package and mounting an optical semiconductor element on the electronic cooling element, wherein the electronic cooling element is soldered to the bottom plate of the optical semiconductor package in a hydrogen atmosphere. The soldering in a hydrogen atmosphere prevents oxidation of a low temperature solder provided on the uppermost surfaces of the electronic cooling element and conduction of the heat at the soldered joint portion between the electronic cooling element and the optical semiconductor element is improved.