Patent ID: 8759937

Claim:
A Schottky junction diode device, comprising: a substrate including substrate material of a first conductivity type and first dopant concentration; a first well, disposed in the substrate, including material of a second conductivity type and second dopant concentration, the second conductivity type opposite to the first conductivity type; a second well, disposed in the first well, including material of the first conductivity type and third dopant concentration; a second well contact within the second well, the second well contact comprising contact material of the first conductivity type and fourth dopant concentration higher than the first or the third dopant concentration; a region of metal-containing material disposed in the second well to form a Schottky junction at an interface between the region of metal-containing material and the second well; a third well, disposed in the substrate, including material of the first conductivity type and fifth dopant concentration lower than the fourth dopant concentration, wherein a portion of the substrate material of the first conductivity type and the first dopant concentration separates the third well and the first well to reduce capacitance of the Schottky junction diode device; and a third well contact within the third well, the third well contact comprising contact material of the first conductivity type and sixth dopant concentration higher than the fifth dopant concentration.