Patent ID: 9698137
Date: 2017-07-04
CPC Classifications: H01L

Claim:
1. A Metal-Insulator-Metal (MIM) capacitor with Electrostatic Discharge (ESD) protection using lateral surface Schottky diodes, the capacitor comprising: a group III-V substrate; a first metal layer formed over a first portion of the substrate; an insulation layer formed over the first metal layer; a second metal layer disposed over a first portion of the insulation layer and over a second portion of the substrate; wherein a junction between the first portion of the substrate and at least one of the first metal layer and a metal structure directly coupled to the first metal layer forms a junction of a first Schottky diode, a junction between the second portion of the substrate and at least one of the second metal layer and a metal structure directly coupled to the second metal layer forms a junction of a second Schottky diode, and the MIM capacitor is formed by overlapping portions of the first metal layer, the insulation layer, and the second metal layer such that cathodes of the first and second Schottky diodes are electrically connected to one another and anodes of the first and second Schottky diodes are electrically connected to the respective overlapping portions of the first and second metal layers.