Patent ID: 8796100

Claim:
A method of forming a Laterally Diffused Metal Oxide Semiconductor (LDMOS) device in a semiconductor substrate wherein the semiconductor substrate has a top surface, the method comprising: forming a gate above the semiconductor substrate; forming a body having a body curvature, comprising: forming a well in the semiconductor substrate from the top surface, wherein the well is of a first doping type; forming a base region of a first doping type from the top surface, wherein the base region is formed partly in the well, and wherein the base region is wider and shallower than the well; and forming a source region and a drain contact region of a second doping type, wherein the source region is adjacent to the body at one side of the gate and wherein the drain contact region is at another side of the gate; and wherein the body curvature defined by outlines of the well and the base region is controlled by adjusting the layout width of the well; and wherein the layout width of the well is increased to increase a breakdown voltage of the LDMOS device.