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. 19, 2015
Filed:
Apr. 30, 2012
Gianluca Boselli, Plano, TX (US);
Rajkumar Sankaralingam, Plano, TX (US);
Gianluca Boselli, Plano, TX (US);
Rajkumar Sankaralingam, Plano, TX (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A LSCR includes a substrate having a semiconductor surface which is p-doped. A first nwell and a second nwell spaced apart from one another are in the semiconductor surface by a lateral spacing distance. A first n+ diffusion region and a first p+ diffusion region are in the first nwell. A second n+ diffusion region is in the second nwell. A second p+ diffusion is between the first nwell and second nwell which provides a contact to the semiconductor surface. Dielectric isolation is between the first n+ diffusion region and first p+ diffusion region, along a periphery between the first nwell and the semiconductor surface, and along a periphery between the second nwell and the semiconductor surface. A resistor provides coupling between the second n+ diffusion region and second p+ diffusion.