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:
Jun. 11, 2002
Filed:
Jan. 27, 2000
Fujitsu Limited, Kawasaki, JP;
Abstract
A semiconductor device includes a semiconductor chip, solder balls, a printed wiring substrate on which the semiconductor chip is provided and which serves to electrically connect the semiconductor chip and the solder balls. When such a semiconductor device is mounted on a motherboard, at least one through-aperture is in advance formed on the printed wiring substrate oppositely to the semiconductor chip. After the solder balls are soldered to the motherboard, an under-filler is introduced from either of a space between the semiconductor chip and the printed wiring substrate or a space between the printed wiring substrate and the motherboard, thus flowing from one space into the other space via the through-aperture.