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:
Jul. 07, 2009
Filed:
Sep. 28, 2004
Kaina Suzuki, Kawasaki, JP;
Shigeo Satoh, Kawasaki, JP;
Kaina Suzuki, Kawasaki, JP;
Shigeo Satoh, Kawasaki, JP;
Fujitsu Microelectronics Limited, Tokyo, JP;
Abstract
A first well is formed in the surface layer of a semiconductor substrate, the first layer being of a first conductivity type, the first well being of a second conductivity type opposite to the first conductivity type. A pair of current input/output ports are connected to the first well, the pair of current input/output ports being used for flowing current through the first well along the direction parallel to a substrate surface. A second well of the first conductivity type is disposed between the pair of current input/output ports, the second well being shallower than the first well. A resistor element is provided which facilitates to have a desired resistance value.