Patent ID: 8053272

Claim:
A method of fabricating a semiconductor device, comprising the steps of: forming a common contact hole for a first conductivity-type region and a second conductivity-type region such that the first conductivity-type region and the second conductivity-type region are exposed; implanting an impurity in at least one of the first conductivity-type region and the second conductivity-type region that is an opposite type from the first conductivity type; and forming a shared contact plug by filling an electrical conducting material in the contact hole, wherein in the implanting step, an impurity is implanted in at least one of the first conductivity-type region and the second conductivity-type region such that the first conductivity-type region and the shared contact plug are brought into ohmic contact with each other, and the second conductivity-type region and the shared contact plug are brought into ohmic contact with each other.