Patent ID: 11869769
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of semiconductor fabrication, comprising:
providing a semiconductor fabrication apparatus, the semiconductor fabrication apparatus including:
a susceptor configured to hold a substrate in a chamber;
a UV radiation producing source disposed over the susceptor, wherein the UV radiation producing source includes a plurality of UV radiation lamps operable to provide a tunable amount of UV radiation; and
a heat source providing heat energy to the chamber;
positioning the substrate on the susceptor, wherein the substrate has a first region and a second region; and
tuning the plurality of UV radiation lamps to provide a first amount of UV radiation to the first region of the substrate while concurrently providing a second amount of UV radiation to the second region of the substrate during an epitaxial growth process on the first region and the second region, wherein the first amount of UV radiation is different than the second amount of UV radiation wherein the first region is on a first plane and the second region is on a second plane, the second plane substantially perpendicular to the first plane.