Patent ID: 9293451
Filing Date: 2016-03-22
CPC Classification: H01L

Claim Text:
1. An integrated circuit electrical protection device comprising: a semiconductor substrate; first, second, and third doped regions of a first polarity in the semiconductor substrate, wherein the first and second doped regions are separated from one another by a first body region having a second polarity in the semiconductor substrate and the second and third doped regions are separated from one another by a second body region having the second polarity in the semiconductor substrate, wherein the first and second polarities are different from one another, and wherein the first body region has an electric potential; a fourth doped region of the second polarity in the semiconductor substrate, wherein the fourth doped region directly abuts and is in contact with the third doped region; a first gate structure formed on the semiconductor substrate over the first body region between the first and second doped regions; and a second gate structure formed on the semiconductor substrate over the second body region between the second and third doped regions, the second gate structure having an active state such that when the second gate structure is in the active state, the electric potential is controlled by a conductive path between the first body region and the second doped region through the substrate via the third and fourth doped regions and a conductive channel in the second body region.