公开(公告)号：US20130324017A1

公开(公告)日：2013-12-05

申请号：US13907658

申请日：2013-05-31

申请人： Irfanulla Khuddus Rahmathullah ,  Bopanna Ichettira Vansantha ,  Padma Gopalakrishnan ,  Ravi Aswathnarayanaiah ,  Abraham Palaty ,  Young J. Paik ,  Stacy Meyer ,  James Klingler ,  Ashish Bhatnagar

发明人： Irfanulla Khuddus Rahmathullah ,  Bopanna Ichettira Vansantha ,  Padma Gopalakrishnan ,  Ravi Aswathnarayanaiah ,  Abraham Palaty ,  Young J. Paik ,  Stacy Meyer ,  James Klingler ,  Ashish Bhatnagar

IPC分类号： B24B37/32

CPC分类号： B24B37/32

摘要： A retaining ring includes an annular lower portion and an annular upper portion. The annular lower portion has a main body with a bottom surface for contacting a polishing pad during polishing, an inner rim projecting upward from the main body, an outer rim projecting upward from the main body and separated from the inner rim by a gap, and a plurality of azimuthally separated interlock features positioned between the inner rim and the outer rim, each interlock feature projecting upwardly from the main body. The annular upper portion has a top surface and a bottom surface and a plurality of azimuthally separated recesses in the bottom surface, the recesses defining thin portions of the upper portion, the plurality of interlock features fitting into the plurality of recesses. The lower portion is a plastic and the upper portion is a material that is more rigid than the plastic.

摘要翻译： 保持环包括环形下部和环形上部。 环形下部具有主体，其具有用于在抛光期间接触抛光垫的底面，从主体向上突出的内边缘，从主体向上突出并与内边缘分开的外缘间隙， 位于内边缘和外边缘之间的多个方位分离的互锁特征，每个互锁特征从主体向上突出。 环形上部具有顶表面和底表面以及在底表面中的多个方位分离的凹槽，所述凹部限定上部的薄部分，多个互锁特征装配到多个凹部中。 下部是塑料，上部是比塑料更硬的材料。