Patent ID: 11862474
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A substrate processing apparatus, comprising:
a temperature detector configured to detect a temperature of a surface of a substrate on which a processing liquid is being discharged toward the surface of the substrate from a nozzle;
a calculation unit configured to calculate, by using a given calculation formula, an etching amount of the substrate based on the temperature of the surface of the substrate detected by the temperature detector; and
an execution unit configured to perform an etching processing on the substrate by the processing liquid based on the etching amount,
wherein the temperature detector is further configured to detect when the substrate reaches a target temperature, and
wherein the given calculation formula is a formula of an exponential function of the temperature and a processing time in the etching processing, the temperature being an average temperature of the surface of the substrate after the substrate reaches the target temperature, and the processing time being a difference value between a supply time of the processing liquid and a time when the substrate reaches the target temperature,
wherein the given calculation formula is

D=(a×exp(b×Tave))×(t1−t0)

wherein D is the etching amount, Tave is the average temperature, t1 is the supply time of the processing liquid, t0 is the time when the substrate reaches the target temperature, and a and b are exponential approximation fitting values.