Dressing apparatus and polishing apparatus
First Claim
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1. A dressing apparatus for dressing a polishing surface of a polishing table for polishing a surface of a workpiece, the dressing apparatus comprising:
- a dresser body connected to a dresser drive shaft which is vertically movable;
a dresser plate which is vertically movable with respect to said dresser body and is tiltable so as to follow the polishing surface;
a dressing member held by said dresser plate for dressing the polishing surface; and
a hermetically sealed space defined by said dresser body, said dresser plate and a resilient membrane;
wherein said dresser body and said dresser plate are connected by said resilient membrane.
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Abstract
A dressing apparatus dresses a polishing surface of a polishing table used for polishing a workpiece such as a semiconductor wafer in a polishing apparatus. The dressing apparatus comprises a dresser body (31) connected to a dresser drive shaft (23) which is vertically movable, a dresser plate (32) which is vertically movable with respect to the dresser body (31), and a dressing member (22) held by the dresser plate (32) for dressing the polishing surface (1a).
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Citations
14 Claims
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1. A dressing apparatus for dressing a polishing surface of a polishing table for polishing a surface of a workpiece, the dressing apparatus comprising:
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a dresser body connected to a dresser drive shaft which is vertically movable;
a dresser plate which is vertically movable with respect to said dresser body and is tiltable so as to follow the polishing surface;
a dressing member held by said dresser plate for dressing the polishing surface; and
a hermetically sealed space defined by said dresser body, said dresser plate and a resilient membrane;
wherein said dresser body and said dresser plate are connected by said resilient membrane. - View Dependent Claims (2)
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3. A dressing apparatus for dressing a polishing surface of a polishing table for polishing a surface of a workpiece, the dressing apparatus comprising:
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a dresser body connected to a dresser drive shaft which is vertically movable;
a dresser plate which is vertically movable with respect to said dresser body and is tiltable so as to follow the polishing surface;
a dressing member held by said dresser plate for dressing the polishing surface; and
a hermetically sealed space provided between said dresser body and said dresser plate or a member fixed to said dresser plate;
wherein at least a part of said hermetically sealed space is formed by a resilient membrane. - View Dependent Claims (4, 5, 6, 7)
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8. A dressing apparatus for dressing a polishing surface of a polishing table for polishing a surface of a workpiece, the dressing apparatus comprising:
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a dresser body connected to a dresser drive shaft which is vertically movable;
a dresser plate which is vertically movable with respect to said dresser body and is tiltable so as to follow the polishing surface;
a dressing member held by said dresser plate for dressing the polishing surface;
a gimbal mechanism provided between said dresser body and said dresser plate such that said dresser plate is tiltable so as to follow an inclination of said polishing surface and is vertically movable with respect to said dresser body; and
a hermetically sealed space defined by said dresser body, said dresser plate and a resilient membrane;
wherein said dresser body and said dresser plate are connected by said resilient membrane. - View Dependent Claims (9)
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10. A dressing apparatus for dressing a polishing surface of a polishing table for polishing a surface of a workpiece, the dressing apparatus comprising:
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a dresser body connected to a dresser drive shaft which is vertically movable;
a dresser plate which is vertically movable with respect to said dresser body and is tiltable so as to follow the polishing surface;
a dressing member held by said dresser plate for dressing the polishing surface;
a gimbal mechanism provided between said dresser body and said dresser plate such that said dresser plate is tiltable so as to follow an inclination of said polishing surface and is vertically movable with respect to said dresser body; and
a hermetically sealed space provided between said dresser body and said dresser plate or a member fixed to said dresser plate;
wherein at least a part of said hermetically sealed space is formed by a resilient membrane. - View Dependent Claims (11, 12, 13, 14)
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Specification