发明授权
US09050700B2 Methods and apparatus for an improved polishing head retaining ring 有权
用于改进的抛光头保持环的方法和装置

Methods and apparatus for an improved polishing head retaining ring
摘要:
Methods, apparatus, and systems are provided for retaining a substrate in a polishing head of a CMP system. The invention includes a flexible inner retaining ring adapted to contour to an edge of a substrate and an inner ring support coupled to the polishing head. The inner support ring is adapted to contact the flexible inner retaining ring in response to a side force load applied to the flexible inner retaining ring by a substrate being polished. Numerous additional aspects are disclosed.
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