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

Claim 0:
1. A temperature control device, located at an interface between a photoresist coating and developing machine and a lithography machine; wherein the temperature control device comprises: a temperature detection device, a gas flow generator and a controller;
the temperature detection device and the gas flow generator are respectively connected to the controller;
the temperature detection device is configured to detect an actual temperature at the interface in real time;
the gas flow generator is at least configured to generate a gas flow sealing knife around the interface; and
the controller is configured to control the gas flow generator to generate the gas flow sealing knife responsive to the actual temperature detected by the temperature detection device being not equal to a target temperature at the interface, to control the actual temperature at the interface to reach the target temperature through the gas flow sealing knife,
wherein the target temperature at the interface is determined by the following process:
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.