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. 02, 2009
Filed:
Jun. 05, 2006
Applicant:
John D. Husher, Los Altos Hills, CA (US);
Inventor:
John D. Husher, Los Altos Hills, CA (US);
Assignee:
Micrel, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/8238 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for providing a programmable electrostatic discharge (ESD) protection device is provided. The method includes providing a source diffusion in a substrate, providing a deeper body diffusion in the substrate, providing a gate at a space between the source diffusion and the body diffusion, and providing a variable structure for shorting the source diffusion and the body diffusion to each other when ESD voltage is encountered on a circuit connected thereto, wherein the variable structure comprises a plurality of contacts over the source diffusion for the source diffusion to be grounded to the body diffusion.