Patent ID: 9666496
Date: 2017-05-30
CPC Classifications: B24B,H01L

Claim:
1. An apparatus for performing a chemical-mechanical planarization (CMP) on an article using a polishing fluid that includes particles, the apparatus comprising: a polishing head configured to hold and to move the article; a fluorescence detector configured to detect an intensity of a fluorescent light generated by the particles in response to a light incident on the article, based on which the CMP is controlled; a polish-head-rotation controller coupled to the polishing head and operable so as to control the operation of the polishing head; and a computer coupled to the fluorescence detector and the polish-head-rotation controller and configured to compare the intensity of the fluorescent light detected by the fluorescence detector with a threshold and to control the operation of the polish-head-rotation controller based on the result of the comparison.