Patent ID: 9502318
Filing Date: 2016-11-22
CPC Classification: B24B,H01L

Claim Text:
1. A polish apparatus comprising: a rotatable table configured to receive a polish pad having a polish surface; a polish head configured to hold a polish object and configured to place the polish object in contact with the polish surface while holding the polish object; at least one contact portion being structurally independent from the polish head and being provided with a contact surface, the contact portion being configured to contact the polish surface when the table is in rotation; a measurement portion configured to measure a state of the contact surface of the contact portion that contacts the polish surface of the polish pad; a table drive portion configured to drive the rotatable table; a polish head drive portion configured to drive the polish head; and a controller configured to control the table drive portion and the polish head drive portion, wherein the controller is configured to evaluate a state of the polish pad based on the measured state of the contact surface of the contact portion, and is configured to determine whether or not to replace the polish pad or to specify polish conditions based on the evaluated state of the polish pad.