Patent ID: 6548864
Filing Date: 2003-04-15
Classification: H01L

Abstract:
A MOS technology power device comprising:a semiconductor material layer of a first conductivity type; a first insulating material layer above the semiconductor material layer; a conductive material layer disposed above the first insulating material layer; a plurality of elementary functional units, each elementary functional unit including: an elongated body region of a second conductivity type formed in the semiconductor material layer and having a length; a first elongated window in the first insulating material layer and the conductive material layer above the elongated body region, the first elongated window having a length along the length of the elongated body region and having a width defined by a plurality of elongated edges in the first insulating material layer and the conductive material layer; a source region of the first conductivity type, disposed in the elongated body region along the length of the elongated body region; a second insulating material layer disposed above the conductive material layer and at each elongated edge of the first elongated window, having a second elongated window disposed therein along the length of the elongated body region, the second elongated window having a width defined by a plurality of elongated edges in the second irisulating material layer; and a metal layer disposed above the second insulating material layer, contacting a body portion of the elongated body region wherein no dopant of the first conductivity type is provided and the source region through the second elongated window along the length of the elongated body region; wherein each source region includes a plurality of source portions of the first conductivity type extending in a longitudinal direction of the elongated body region each having a length along the length of the elongated body region and intercalated along the length of the elongated body region with body portions of the elongated body region wherein no dopants of the first conductivity type are provided; and wherein a width of the source portions is greater than the width of the second elongated window disposed in the second insulating material layer.