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:
May. 21, 2002
Filed:
Apr. 07, 2000
Y. Mohammed Kasem, Santa Clara, CA (US);
Yueh-Se Ho, Sunnyvale, CA (US);
Lee Shawn Luo, San Jose, CA (US);
Chang-Sheng Chen, Santa Clara, CA (US);
Eddy Tjhia, Sunnyvale, CA (US);
Bosco Lan, Fremont, CA (US);
Jacek Korec, San Jose, CA (US);
Anup Bhalla, Santa Clara, CA (US);
Siliconix Incorporated, Santa Clara, CA (US);
Abstract
In a semiconductor package for a chip having terminals on both sides, for example, a power MOSFET in which the gate and source terminals are on the front side and the drain terminal is on the back side, electrical contact is made with the back side terminal by extending vias, which can take the form of trenches, holes or other cavities, either entirely or patrially through the chip. The vias are filled with a metal or other electrically conductive material. The process is performed on the chips in a wafer simultaneously. The resulting package is compact and economical to manufacture and can readily be mounted, flip-chip style, on a printed circuit board.