The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2022
Filed:
Dec. 12, 2019
Lam Research Corporation, Fremont, CA (US);
John Wiltse, Lake Oswego, OR (US);
LAM RESEARCH CORPORATION, Fremont, CA (US);
Abstract
In various embodiments, a showerhead mechanism to adjust a showerhead in a semiconductor substrate-processing apparatus is disclosed. The mechanism includes at least one actuator assembly that is dynamically operable to adjust parallelism of a faceplate of the showerhead with reference to an upper surface of a substrate pedestal that is to be positioned adjacent to the faceplate. Each of the actuator assemblies includes a piezoelectric stack and a lever having a first end and a second end. The lever is mechanically coupled on the first end to the piezoelectric stack and on the second end to the showerhead to displace the showerhead in at least one direction of tilt. The lever is operable to amplify mechanically a displacement of the piezoelectric stack. A lever pivot point is coupled to the lever and is located between the first end and the second end of the lever.