Patent ID: 9005499
Filing Date: 2015-04-14
Classification: B24B

Abstract:
1. A method for manufacturing a retainer ring of a chemical mechanical polishing device, comprising: coupling insert pins into respective pin coupling holes formed in an insert ring member, wherein the pin coupling holes are spaced apart from each other; disposing the insert ring member in a mold by coupling the insert pins to an interior of the mold such that a space is defined around the insert ring member in the mold; and molding a shell member covering the insert ring member by injecting molten shell material into the mold in which the insert ring member is disposed, wherein each of the insert pins comprises a spacing protrusion protruding above one surface of the insert ring member, and the disposing comprises disposing the insert ring member in the mold by inserting the spacing protrusions of the insert pins into corresponding mounting holes formed in the mold so that the space is defined around the insert ring member.