High voltage transistor

摘要

In a method for constructing a semiconducting device, within a substrate of a first conductivity type there is formed a well of second conductivity type. Within the well, an extended drain region of a first conductivity type is formed. An insulating region over the extended drain region is formed. A gate region is formed on a surface of the substrate. A first side of the gate region is adjacent to a first end of the extended drain region. A drain region of the first conductivity type is formed. The drain region is in contact with a second end of the extended drain region. A source region is formed on a second side of the gate region.