Patent ID: 11929260
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for reducing warpage of a substrate, comprising:
applying an epoxy mold over a plurality of dies on the substrate in a dispenser tool;
placing the substrate on a pedestal in a curing chamber, wherein the pedestal has a central region that is raised with respect to a peripheral region of the pedestal, and wherein the substrate has an expected post-cure deflection in a first direction;
inducing a curvature on the substrate in a direction opposite the first direction applying a force against the substrate to conform the substrate to the pedestal, wherein applying the force comprises placing a ring that is weighted on an outer about 1 to about 3 mm of the substrate; and
curing the substrate by heating the substrate in the curing chamber.