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. 13, 2003
Filed:
Nov. 02, 2001
Applicant:
Inventors:
Yang Du, Austin, TX (US);
Suman Kumar Banerjee, Mesa, AZ (US);
Rainer Thoma, Gilbert, AZ (US);
Alain Duvallet, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/996 ;
U.S. Cl.
CPC ...
H01L 2/996 ;
Abstract
A semiconductor device ( ) includes an isolated p-well ( ) formed in a substrate ( ) by a buried n-well ( ) and an n-well ring ( ). The n-well ring ( ) extends from a surface of the semiconductor device ( ) to the buried n-well ( ). The isolated p-well ( ) includes a plurality of n-well plugs ( ) extending from the surface of the semiconductor device ( ) into the isolated p-well ( ) and contacting the buried n-well ( ). The plurality of n-well plugs ( ) reduces an n-well resistance to provide better noise isolation for high frequency signals.