Patent ID: 11906299
Assignee: EBARA CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC G  C | IPC C  G

Claim 0:
1. A plating apparatus comprising:
a plating tank configured to store a plating solution and internally including an anode;
a substrate holder disposed above the anode and configured to hold a substrate as a cathode;
a rotation mechanism configured such that the rotation mechanism rotates the substrate holder when a plating process is performed on the substrate;
a plurality of contact members disposed in the substrate holder and arranged in a circumferential direction of the substrate holder, the plurality of contact members being configured to contact an outer peripheral edge of a lower surface of the substrate to supply electricity to the substrate in the plating process;
a coil configured to generate a current by an electromagnetic induction due to a magnetic field caused by a current flowing into a contact member of the plurality of contact members, the plurality of contact members being configured to rotate together with the substrate holder in the plating process;
a current sensor configured to detect the current generated in the coil; and
a film thickness measuring device configured to measure a film thickness of the substrate based on the current detected by the current sensor in the plating process.