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

Claim 8:
9. A temperature control system for an etching workbench, comprising: a workbench temperature control fluid loop, a temperature adjustment loop, an evaporator and a controller; wherein both the workbench temperature control fluid loop and the temperature adjustment loop pass through the evaporator, the workbench temperature control fluid loop is not connected with the temperature adjustment loop, and the controller is electrically connected to the workbench temperature control fluid loop and the temperature adjustment loop;
the workbench temperature control fluid loop is configured to adjust a temperature of the etching workbench; and
the controller is configured to control the temperature adjustment loop to adjust a real-time temperature of a temperature control fluid in the workbench temperature control fluid loop by the evaporator, so that a target operating temperature of the etching workbench is stabilized within a preset range; and
the controller is configured to control the temperature adjustment loop in the following manner:
the controller determines a temperature control instruction according to a limit temperature, the real-time temperature of the temperature control fluid and a real-time temperature of the etching workbench, and
the controller sends the temperature control instruction to the temperature adjustment loop.