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. 08, 2001
Filed:
Jan. 12, 1999
Applicant:
Inventors:
John Bliss, Tempe, AZ (US);
Lynn William Ford, Scottsdale, AZ (US);
Assignee:
Semiconductor Components Industries LLC, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/715 ;
U.S. Cl.
CPC ...
H01L 2/715 ;
Abstract
A variable capacitance semiconductor device (,) such as a varactor diode, is formed to have a plurality of openings (,), such as a plurality of trenches, that cause the depletion regions (,) to overlap. This overlap results in a rapid change of capacitance for a given change of voltage, and allows efficient operation over a small voltage range.