Patent ID: 7138701
Filing Date: 2006-11-21
Classification: H01L

Abstract:
1. A triple well electrostatic discharge (ESD) network comprising: a substrate of a first conductivity; an insulator region residing on the surface of the substrate; a first region of a second conductivity being partially embedded in the insulator region and the substrate; a second region of the second conductivity being completely embedded in the substrate and partially embedded in the first region; a third region of the second conductivity being partially embedded in the insulator region, the second region, and the substrate, the third region, second region, and first region forming a cathode coupled to a power supply; a fourth region of the first conductivity being embedded in the insulator region and being located between the first and third regions; and an isolation region forming a metallurgical junction between the fourth region and the first, second and third regions for the conduction of electrostatic discharee, the fourth region and isolation region forming an anode coupled to an input.