METHODS OF FORMING SEMICONDUCTOR DEVICES USING SELF-ALIGNED METAL SHUNTS

摘要

A method of fabricating a semiconductor device using a self-aligned metal shunt process is disclosed. The method can include sequentially forming a lower conductive pattern and a sacrificial pattern on a semiconductor substrate. An interlayer dielectric layer is formed to cover the sacrificial pattern. The interlayer dielectric layer is patterned to form a preliminary trench that exposes the top surface of the sacrificial pattern. The exposed sacrificial pattern is removed to form a trench that expose the top surface of the lower conductive pattern. An upper conductive pattern is formed to fill the trench.