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

Claim 9:
10. A method of semiconductor fabrication including:
positioning a substrate on a susceptor in a chamber;
positioning a plurality of UV radiation lamps above the susceptor, wherein the plurality of UV radiation lamps provide radiation to the substrate on the susceptor;
coupling the plurality of UV radiation lamps to a motor that is communicatively coupled to a controller;
sending instructions to the controller to vary at least one UV radiation lamp of the plurality of UV radiation lamps;
providing radiation from the plurality of UV radiation lamps according to the instructions, wherein the providing the radiation provides different UV amounts to a first region of the substrate than a second region of the substrate; and
during the providing the radiation of the different UV amounts, concurrently growing a first portion of an epitaxial feature on the first region of the substrate at a first rate and a second portion of the epitaxial feature on the second region of the substrate at a second rate, wherein the first rate and the second rate are determined by the instructions, wherein the first portion of the epitaxial feature is grown on the first region disposed at a first plane and the second portion of the epitaxial feature is grown on the second region disposed at a second plane, the second plane perpendicular to the first plane.