Patent ID: 11894235
Assignee: LAPIS SEMICONDUCTOR CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A method of polishing a semiconductor substrate, the method comprising:
ejecting a gas from above a processing surface of a polishing pad onto grooves formed in the processing surface of the polishing to remove residue from the processing surface;
measuring a depth of the grooves from above the processing surface of polishing pad after the gas is ejected onto the grooves of the processing surface;
after measuring the depth of the grooves, supplying a polishing material to the processing surface, causing the semiconductor substrate to abut the processing surface, and polishing the semiconductor substrate in a state in which the processing surface is rotated about a rotary shaft running along a direction intersecting the processing surface; and
supplying cleaning fluid to the processing surface and cleaning the processing surface.