Patent ID: 11948818
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. A method of determining a temperature of a process chamber, suitable for use in semiconductor manufacturing, comprising:
performing a first procedure comprising:
(a) flowing a gas into a process volume;
(b) setting a temperature of a substrate support within the process volume to a first temperature;
(c) depositing a first layer on a top surface of the substrate support using the gas, the first layer having a first thickness and the top surface does not include a substrate disposed thereon;
(d) etching the first layer from the substrate support at the first temperature to a second thickness less than the first thickness; and
(e) determining a first temperature etch rate of the etching the first layer at the first temperature using one or more pyrometers, one or more cameras, one or more strain gauges, or one or more piezoelectric sensors;

repeating each of operations (a)-(e) within the first procedure at a second temperature different from the first temperature to obtain a second temperature etch rate; and
determining a measured temperature curve from at least the first temperature etch rate and the second temperature etch rate.