Patent ID: 11926920
Assignee: ACM RESEARCH (SHANGHAI) INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 11:
12. The electroplating apparatus according to claim 1, wherein the plurality of anodes comprises three anodes:
a first anode, the first anode being circular and covering a central area of the wafer, the first anode being powered by a first power supply of the plurality of power supplies;
a second anode, the second anode being a ring with a notch and covering a peripheral area of the wafer, the second anode being powered by a second power supply of the plurality of power supplies;
a third anode, the third anode being curved and disposed at a position of the notch of the second anode, the third anode being powered by a third power supply of the plurality of power supplies;
wherein the third anode is matched with the second anode, the third anode and the second anode are spliced to form a complete ring, and the third anode is insulated from the second anode;
wherein the first anode, the second anode and the third anode collectively cover the entire area of the wafer.