Patent ID: 8963200
Filing Date: 2015-02-24
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate of a first conductivity type; a first well of the first conductivity type formed into the semiconductor substrate; a second well of a second conductivity type formed into the semiconductor substrate adjacent to the first well, an intersection of the first well and the second well forming a p-n junction; a first diffused region of the first conductivity type formed at an upper surface of the first well and coupled to a ground terminal; a first diffused region of the second conductivity type formed at the upper surface of the first well and coupled to the ground terminal; a second diffused region of the first conductivity type formed at the upper surface of the second well and coupled to a pad terminal; a second diffused region of the second conductivity type formed at the upper surface of the second well and coupled to a positive supply terminal; and a Schottky junction formed at the surface of the first well adjacent to the first diffused region of the second conductivity type and coupled to the ground terminal, wherein the Schottky junction is laterally displaced from the first diffused region of the second conductivity type along the plane of the upper surface of the first well.