Patent ID: 6165900
Filing Date: 2000-12-26
Classification: H01L

Abstract:
A method for manufacturing a semiconductor device, the method comprising:forming first and second transistors on an active region of a semiconductor substrate, the first and second transistors being adjacent to each other;forming an insulating layer over the semiconductor substrate and the first and second transistors;removing the insulating layer from over a diffusion region of the first transistor and over a gate of the second transistor;coating a silicide-forming silicon over the semiconductor substrate, the insulating layer, and the first and second transistors;forming a photoresist film over a first area from the diffusion region of the first transistor to the gate of the second transistor;removing exposed portions of the silicide-forming silicon and the insulating layer not in the first area, such that a remaining portion of the silicide-forming silicon covers substantially all of the diffusion region of the first transistor, leaving none of the diffusion region exposed;removing the photoresist film;forming a metal layer over the semiconductor substrate, the insulating layer, and the first and second transistors;forming a silicide layer in the first area by thermally treating the metal layer; andremoving any remaining metal layer after the step of forming a suicide layer,whereby the diffusion region of the first transistor is connected to the gate of the second transistor by the silicide layer.