Patent ID: 8309410

Claim:
A method of forming a semiconductor device using a first semiconductor layer having a first conductivity type and a first doping concentration with an overlying second semiconductor layer having the first conductivity type and a second doping concentration less than the first doping concentration, comprising: forming a gate dielectric over the second semiconductor layer, a portion of the second semiconductor layer to function as a drain; forming a gate electrode over the gate dielectric, wherein the gate electrode comprises a center portion that comprises metal on the gate dielectric, a first silicon portion on the gate dielectric laterally adjacent to a first side of the center portion, and a second silicon portion on the gate dielectric laterally adjacent to a second side of the center portion in which the first side is opposite the second side; forming a first semiconductor region in the second semiconductor layer of a second conductivity type having a portion under the first silicon portion to function as a channel, wherein the forming the first semiconductor region includes implanting; and forming a second semiconductor region of the first conductivity type having a portion to function as a source adjacent to the portion of the first semiconductor region, wherein the forming a second semiconductor region includes implanting.