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

Claim 15:
16. The electroplating apparatus according to claim 1, wherein the plurality of anodes comprises two anodes:
a first anode, the first anode being circular and covering a central area of the wafer, the first anode being provided with a concave portion and powered by a first power supply of the plurality of power supplies;
a second anode, the second anode being a ring and covering a peripheral area of the wafer, the second anode being provided with a protruding portion and powered by a second power supply of the plurality of power supplies;
wherein the protruding portion of the second anode is matched with the concave portion of the first anode, the protruding portion is embedded into the concave portion, and the spliced first anode and the second anode collectively cover the entire area of the wafer.