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:
May. 27, 2025
Filed:
Feb. 04, 2021
Applied Materials, Inc., Santa Clara, CA (US);
Uwe P. Haller, San Jose, CA (US);
Kiyki-Shiy N. Shang, Mountain House, CA (US);
Dmitry A. Dzilno, Sunnyvale, CA (US);
Applied Materials, Inc., Santa Clara, CA (US);
Abstract
A method of providing power to a plurality of heaters in multiple zones for wafer-processing equipment may include causing a voltage to be supplied to a plurality of power leads configured to supply the voltage to a plurality of different heating zones in a pedestal, causing current to be received from the plurality of different heating zones through a return lead that is shared by the plurality of power leads, and causing a polarity of the voltage provided to the plurality of power leads to switch. The switching frequency may be configured such that a DC chucking operation can be active at the same time to hold a substrate to the pedestal. Duty cycling the heating zones that share the return lead may minimize the current through the shared return lead.