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:
Apr. 29, 2003
Filed:
Jan. 25, 2000
Applicant:
Inventors:
Ryoji Tokushige, Gunma, JP;
Nobuyuki Takai, Gunma, JP;
Hiroyuki Shinogi, Gunma, JP;
Seiichi Ono, Gunma, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/100 ; H01L 2/144 ;
U.S. Cl.
CPC ...
H01L 2/100 ; H01L 2/144 ;
Abstract
A metal post used with a chip size package and barrier metal formed on the metal post are omitted. After a second opening where a wiring layer is exposed is made, a second seed layer is formed and a solder post is formed with the seed layer as a plate electrode.