Patent ID: 10633757

Abstract:
There are provided a plating apparatus and a plating method that allow determining an appropriate replacement timing of a diaphragm. The plating apparatus includes an anode bath, a cathode bath, a diaphragm, an analyzer, and a control device. The anode bath holds a plating solution and an insoluble anode. The cathode bath holds a plating solution containing an additive and a substrate. The diaphragm separates the plating solution held in the anode bath from the plating solution held in the cathode bath. The analyzer is configured to analyze a concentration of the additive in the plating solution in the cathode bath at every predetermined time interval. The control device is configured to calculate an actual consumption of the additive during the predetermined period based on the concentration of the additive analyzed at the every predetermined time interval. The control device includes a memory that stores an expected consumption of the additive during the predetermined period. The control device is configured to determine whether a difference between the actual consumption and the expected consumption is equal to or more than a predetermined value or not.