Patent ID: 11915952
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The temperature control method for an etching workbench according to claim 4, wherein the real-time temperature of the etching workbench comprises a center region temperature and an edge region temperature, and the real-time temperature of the temperature control fluid comprises a first temperature-control fluid temperature of the center loop and a second temperature-control fluid temperature of the edge loop; and, the acquiring a feedback signal comprises:
acquiring a first feedback signal, the first feedback signal comprising the center region temperature and the first temperature-control fluid temperature that are detected in real time; and
acquiring a second feedback signal, the second feedback signal comprising the edge region temperature and the second temperature-control fluid temperature that are detected in real time;
wherein the feedback signal comprises the first feedback signal and the second feedback signal.