Patent ID: 11920254
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 12:
13. An electroplating system, comprising:
an electroplating chamber configured to hold a plating bath;
a substrate holder configured to hold a substrate to be plated by the plating bath, wherein the substrate holder includes an array of contact pins configured to receive power during electroplating;
a cone configured to load the substrate onto the substrate holder, wherein the cone comprises a first array of contact detection sensors disposed on a surface of the cone, wherein contacts are formed between the substrate and the array of contact pins, and wherein the first array of contact detection sensors are disposed vertically above the array of contact pins and are configured to measure resistances of the contacts;
a controller coupled to the first array of contact detection sensors and configured to receive the measured resistances; and
a processor coupled to the controller, wherein the processor is configured to determine differences between a predetermined value and the resistances and to determine a status of the contacts based on the differences.