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. 01, 2001
Filed:
Feb. 19, 1999
Fujitsu Limited, Kawasaki, JP;
Abstract
A semiconductor device having multiple circuit elements capable of performing different functions and that operate at a high frequency includes island regions on which the circuit elements are located and isolation regions that surround the island regions and thus, the circuit elements. The island regions electrically separate the circuit elements from each other. A capacitor is connected between a substrate portion of the semiconductor device and ground. The isolation regions include a conductive region with a conductivity type opposite to the conductivity type of the substrate portion, such that a parasitic capacitor is formed between the substrate portion and the conductive region. The parasitic capacitor prevents signal leakage between the circuit elements and the island regions.