Abstract: A semiconductor device is provided. The semiconductor device includes a semiconductor body and a transistor. The transistor includes a drain region in the semiconductor body, a first doped region in the drain region, a source region in the semiconductor body, a second doped region adjacent the source region, and a third doped region between the first doped region and the second doped region. The third doped region includes a first portion having a first concentration of dopants, a second portion adjacent the first portion and having a second concentration of dopants, a third portion adjacent the second portion and having a third concentration of dopants, and a fourth portion adjacent the third portion and having a fourth concentration of dopants. The first concentration is less than the second concentration. The second concentration is greater than the third concentration. The third concentration is less than the fourth concentration.

Abstract: A semiconductor device includes: a first semiconductor region disposed over a second semiconductor region, wherein the first and second semiconductor regions have a first doping type and a second doping type, respectively; a first source/drain contact region and a second source/drain contact region having the second doping type and laterally spaced; and a gate electrode disposed laterally between the first and second source/drain contact regions, wherein the gate electrode comprises a first sidewall relatively closer to the first source/drain region and a second sidewall relatively closer to the second source/drain region, and wherein respective cross-sectional areas of the first and second sidewalls of the gate electrode are different from each other.

Abstract: A semiconductor device includes: a first semiconductor region disposed over a second semiconductor region, wherein the first and second semiconductor regions have a first doping type and a second doping type, respectively; a first source/drain contact region and a second source/drain contact region having the second doping type and laterally spaced; and a gate electrode disposed laterally between the first and second source/drain contact regions, wherein the gate electrode comprises a first sidewall relatively closer to the first source/drain region and a second sidewall relatively closer to the second source/drain region, and wherein respective cross-sectional areas of the first and second sidewalls of the gate electrode are different from each other.

Abstract: A semiconductor device includes: a first semiconductor region disposed over a second semiconductor region, wherein the first and second semiconductor regions have a first doping type and a second doping type, respectively; a first source/drain contact region and a second source/drain contact region having the second doping type and laterally spaced; and a gate electrode disposed laterally between the first and second source/drain contact regions, wherein the gate electrode comprises a first sidewall relatively closer to the first source/drain region and a second sidewall relatively closer to the second source/drain region, and wherein respective cross-sectional areas of the first and second sidewalls of the gate electrode are different from each other.

Abstract: A laterally diffused metal-oxide-semiconductor (LDMOS) transistor with a vertical channel region is provided. A first semiconductor region is formed over a second semiconductor region and with a first doping type. The second semiconductor region has a second doping type different than the first doping type. A gate electrode is formed laterally adjacent to the first semiconductor region and extending along a side boundary of the first semiconductor region. A first source/drain contact region and a second source/drain contact region are respectively formed on opposite sides of the gate electrode and with the second doping type. The first source/drain contact region is further formed over the first semiconductor region. A method for manufacturing the LDMOS transistor is also provided.