Patent ID: 11942345
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 8:
9. The method of claim 8, further comprising:
obtaining a second delta time value for the third pyrometer relative to the first pyrometer, wherein the second delta time value is a duration of time between when the first pyrometer is covered by the substrate and when the third pyrometer is covered by the substrate;
obtaining a third delta time value for the fourth pyrometer relative to the first pyrometer, wherein the third delta time value is a duration of time between when the first pyrometer is covered by the substrate and when the fourth pyrometer is covered by the substrate;
calculating time offset values of the second and third delta time values relative to ideal delta time values, wherein the ideal delta time values are the delta time values when the substrate is perfectly centered in the first direction; and
comparing the time offset values to the graph or the lookup table that correlates the time offset values to the distance offset value, wherein the distance offset value is how far off center the substrate is from being perfectly centered in the first direction.