Patent ID: 6459102
Filing Date: 2002-10-01
Classification: H01L

Abstract:
A peripheral structure for monolithic power device comprising:a substrate with a first doping type (N), a front face fitted with a connection to a cathode, a rear face fitted with a connection to an anode, a first junction adjoining one of the said faces, whereas the said junction is reverse-biased when a direct voltage is applied between the anode and the cathode, a second junction adjoining the face opposite to the face corresponding to the first junction, whereas the said junction is forward-biased when a direct voltage is applied between the anode and the cathode, and at least one insulating box with a second type of doping, connecting the front and rear faces, and disconnected electrically from the first junction, whereas the said structure is such that when a reverse voltage is applied between the anode and the cathode, creating equipotential voltage lines, the said insulating box enables to distribute the equipotential lines in the substrate, characterised in that the box is disconnected electrically from the second junction and in that the said peripheral structure is such that when a direct voltage is applied between the anode and the cathode, generating equipotential voltage lines, the said insulating box enables to distribute the said equipotential lines in the substrate.