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. 12, 1996
Filed:
Nov. 29, 1994
Tatsuharu Matsuda, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An electrode-pin forming mask is used to form electrode pins on the semiconductor chip. The electrode-pin forming mask has electrode-pin forming holes matching electrode pads previously formed on the semiconductor chip. A screen-printing technique is used to form the electrode pins on the semiconductor chip through the electrode-pin forming mask. That is, conductive material in a paste state is pushed into the electrode-pin forming holes in a condition where the electrode-pin forming mask has been placed on the semiconductor chip and positions of the electrode-pin forming holes match positions of the electrode pads of the semiconductor chip, respectively. The conductor material thus pushed into the electrode-pin forming holes is thus shaped as to form the electrode pins projecting from the electrode pads of the semiconductor chip. Then, the electrode-pin forming mask is removed from the semiconductor chip while the thus shaped conductor material continues to be projected from the electrode pads of the semiconductor chip. Thus, the electrode pins are formed on the semiconductor chip.