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. 25, 2002
Filed:
May. 24, 2000
Arjun Kar-Roy, Irvine, CA (US);
Phil N. Sherman, Irvine, CA (US);
Conexant Systems, Inc., Newport Beach, CA (US);
Abstract
Structure and method for fabrication of an improved capacitor are disclosed. In one embodiment, the disclosed capacitor includes a metal column comprising a number of interconnect metal segments and a number of via metal segments stacked on one another. The metal column constitutes one electrode of the capacitor. Another electrode of the capacitor is a metal wall surrounding the metal column. In one embodiment, the metal wall is fabricated from a number of interconnect metal structures and a number of via metal structures stacked on one another. In one embodiment, the metal wall is shaped as a hexagon. In this embodiment, a tight packing arrangement is achieved by packing individual hexagonal capacitors “wall to wall” so as to achieve a cluster of individual hexagonal capacitors. The cluster of individual capacitors acts as a single composite capacitor. In one embodiment, the interconnect metal and via metal are both made of copper. In another embodiment, the interconnect metal is made of copper while the via metal is made of tungsten.