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:
Jan. 06, 2004
Filed:
Dec. 17, 1999
Roy A. Colclaser, Albuquerque, NM (US);
David M. Szmyd, Albuquerque, NM (US);
Koninklijke Phillips Electronics N.V., Eindhoven, NL;
Abstract
An ESD diode protects a circuit against electrostatic discharge (ESD). The ESD diode has four adjacent regions. The first and third regions are formed by doping a semiconductor substrate so that it has a P-type conductivity. The second and fourth regions are formed by doping the semiconductor substrate so that it has an N-type conductivity. The first region is for connection to a signal terminal of the circuit being protected when the fourth region is connected to a positive power line of the circuit. The fourth region is for connection to the signal terminal when the first region is connected to the ground line or a negative power line of the circuit.