摘要:
A method of manufacturing a self-aligned contact pad for the fabrication of an integrated circuit is disclosed. A plurality of gate structures is formed on the substrate. A first insulating layer is formed over the plurality of gate structures. Then, a second insulating layer is formed over the first insulating layer and filling spaces between the gate structures. Next, a portion of second insulating layer is removed between the gate structures, thereby forming a plurality of contact holes between the gate structures and exposing a portion of the first insulating layer. The exposed portion of the first insulating layer is etched away to form a gate spacer on the sidewalls of the gate structures and exposing surfaces of active regions of the substrate. Finally, the plurality of contact holes are filled with a first conductive layer and the first conductive layer is planarized to form contact pads.