Patent ID: 11959186
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. An electroplating apparatus, comprising:
a reaction module configured to contain an electroplating solution, the electroplating solution being used for performing an electroplating process on wafers put in the electroplating solution;
an ultrasonic wave module configured to apply ultrasonic waves to the electroplating solution;
an adding module configured to add particles into the electroplating solution and put the wafers into the electroplating solution or take the wafers out of the electroplating solution;
a processing module configured to remove the particles in the electroplating solution; and
a control module configured to control operation of the ultrasonic wave module, the adding module and the processing module, wherein the control module comprises:
a monitoring unit configured to acquire a preset duration of the ultrasonic wave module applying the ultrasonic waves and a time interval between two successive applications of the ultrasonic waves;
a first control unit configured to control the ultrasonic wave module to apply the ultrasonic waves for the preset duration after a previous batch of wafers completes the electroplating process and is taken out of the electroplating solution;
a second control unit configured to control the adding module to add the particles into the electroplating solution after the previous batch of wafers completes the electroplating process and is taken out of the electroplating solution; and
a third control unit configured to control the processing module to remove the particles in the electroplating solution before a next batch of wafers is put into the electroplating solution to undergo the electroplating process.