摘要:
Embodiments for the present disclosure include a semiconductor device, an ultra-high voltage (UHV) laterally-diffused metal-oxide-semiconductor (LDMOS) transistor, and methods of forming the same. An embodiment includes a first well region of a first conductivity type in a top surface of a substrate, and a second well region of a second conductivity type in the top surface of the substrate. The second well region laterally separated from the first well region by a portion of the substrate. The embodiment further includes a third region of the second conductivity type in the first well region, and a first field oxide region in the first well region, a second field oxide region in the second well region, the second field oxide region having a second bottom surface, and the first field oxide region having a first bottom surface lower than the second bottom surface and on and directly contacting the third region.
摘要:
Embodiments for the present disclosure include a semiconductor device, an ultra-high voltage (UHV) laterally-diffused metal-oxide-semiconductor (LDMOS) transistor, and methods of forming the same. An embodiment includes a first well region of a first conductivity type in a top surface of a substrate, and a second well region of a second conductivity type in the top surface of the substrate. The second well region laterally separated from the first well region by a portion of the substrate. The embodiment further includes a third region of the second conductivity type in the first well region, and a first field oxide region in the first well region, a second field oxide region in the second well region, the second field oxide region having a second bottom surface, and the first field oxide region having a first bottom surface lower than the second bottom surface and on and directly contacting the third region.
摘要:
A semiconductor device includes a gate structure, a source region and a drain region. The source region and the drain region are on opposite sides of the gate structure. The source region includes a first region of a first conductivity type and a second region of a second conductivity type. The second conductivity type is opposite to the first conductivity type. The first region is between the second region and the gate structure. The second region includes at least one projection protruding into the first region and toward the gate structure.
摘要:
A semiconductor device includes a gate structure, and a source region and a drain region on opposite sides of the gate structure. The source region comprises a first region of a first conductivity type, and a second region of a second conductivity type, the second conductivity type opposite to the first conductivity type. The first region is arranged between the second region and the gate structure. The second region comprises at least one projection protruding into the first region and toward the gate structure.