Abstract:
A semiconductor substrate grinding apparatus including a chuck table configured to mount and fix a semiconductor substrate, so that a back side of the semiconductor substrate faces upwardly and rotates in one direction; a grinding wheel on the chuck table configured to grind the back side of the semiconductor substrate; a cleaning liquid supplier on the chuck table, spaced apart from the grinding wheel, and configured to supply a cleaning liquid to the back side of the semiconductor substrate for cleaning by-products generated by grinding the semiconductor substrate; a slurry supplier on the chuck table, adjacent to the cleaning liquid supplier, and configured to supply a slurry to the back side of the semiconductor substrate; and a polishing wheel on the chuck table, spaced apart from the slurry supplier, and configured to perform chemical mechanical polishing on the back side of the semiconductor substrate using the slurry.
Abstract:
Provided are a semiconductor device having dual transistors, and methods of fabricating a semiconductor device, including sequentially forming an insulating layer and a polysilicon layer on a substrate having a first region and a second region, forming a first mask to cover the polysilicon layer on the second region, injecting at least one n-type impurity into the polysilicon layer on the first region to form an N-region, injecting nitrogen into the N-region, forming a second mask to cover the N-region, and injecting at least one p-type impurity into the polysilicon layer on the second region to form a P-region.