Patent ID: 11874609
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A temperature control method, applied to a temperature control device located at an interface between a photoresist coating and developing machine and a lithography machine, the temperature control device at least comprising: a temperature detection device and a gas flow generator; wherein the method comprises:
determining a target temperature at the interface between the photoresist coating and developing machine and the lithography machine;
acquiring an actual temperature at the interface in real time through the temperature detection device; and
at least generating a gas flow sealing knife around the interface through the gas flow generator in the case where the actual temperature is not equal to the target temperature, to control the actual temperature at the interface to reach the target temperature through the gas flow sealing knife,
wherein the determining a target temperature at the interface between the photoresist coating and developing machine and the lithography machine comprises:
acquiring a first preset temperature of the photoresist coating and developing machine and a second preset temperature of the lithography machine;
determining, according to the first preset temperature and different set temperatures at the interface, a corresponding stabilization time set when a temperature of a wafer in the lithography machine reaches the second preset temperature; and
determining a set temperature corresponding to a shortest stabilization time in the corresponding stabilization time set as the target temperature; wherein an overlaying error of the wafer meets requirements at the target temperature.