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. 01, 2011
Filed:
Jan. 17, 2007
Applicants:
Joji Fujimori, Kawasaki, JP;
Seiki Sakuyama, Kawasaki, JP;
Toshiya Akamatsu, Kawasaki, JP;
Inventors:
Assignee:
Fujitsu Semiconductor Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mounting method of a semiconductor element whereby the semiconductor element is mounted on a wiring board via an outside connection projection electrode not containing lead (Pb), the mounting method includes a step of applying a reflow heating process for connecting the outside connection projection electrode of the semiconductor element and the wiring board and then cooling the connected semiconductor element and wiring board at a cooling rate equal to and lower than 0.5° C./s.