Patent ID: 7417265
Filing Date: 2008-08-26
Classification: H01L

Abstract:
1. A Schottky diode structure comprising: a region of a semiconductor material having a first major surface; a first insulating layer formed overlying the first major surface and having an active area opening; a second insulating layer formed overlying the first major surface at least within the active area opening, wherein the second insulating layer has a Schottky contact opening that is smaller than the active area opening; a conductive plate formed overlying the second insulating layer; a third insulating layer formed overlying the conductive plate, wherein the third insulating layer has a contact opening overlying the Schottky contact opening and that is smaller than the active area opening and larger than the Schottky contact opening; a metal layer contacting the region of the semiconductor material to form a Schottky barrier, the metal layer further contacting horizontal and vertical surfaces of the conductive plate; a cathode contact coupled to the region of the semiconductor material at the first major surface; and a doped region of the second conductivity type formed in the region of the semiconductor material adjoining the cathode contact, wherein the structure is formed absent a guard ring structure adjacent the Schottky barrier.