Taiwan Semiconductor Manufacturing Company Limited
Trench isolation process

Abstract:

One or more semiconductor processing tools may form a deep trench within a silicon wafer. The one or more semiconductor processing tools may deposit a first insulating material within the deep trench. The one or more semiconductor processing tools may form, after forming the deep trench with the silicon wafer, a shallow trench above the deep trench. The one or more semiconductor processing tools may deposit a second insulating material within the shallow trench.