Patent ID: 11869813
Assignee: CANON KABUSHIKI KAISHA
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 0:
1. A method of leveling control between a superstrate and a substrate, comprising:
identifying a contact force model indicating a relationship between a total contact force for planarization of a formable material between the superstrate and the substrate and a force component of the total contact force along each of a plurality of peripheral axes; and
determining a set point force required for performing the planarization;
calculating each force component based on the contact force model; and
performing planarization by applying each force component along a corresponding axis of the plurality of peripheral axes;
wherein the contact force model is identified based on a parallel condition between two contacting surfaces of:
a superstrate chuck for retaining the superstrate; and
a stack of the superstrate, the substrate, and formable material between the superstrate and the substrate.