Abrading – Abrading process – With tool treating or forming
Patent
1997-04-04
1999-12-07
Scherbel, David A.
Abrading
Abrading process
With tool treating or forming
451 45, 451443, 451288, B24B 100
Patent
active
059973854
ABSTRACT:
An elastic polishing pad is adhered to a surface of a flat substrate holder of a platen. A substrate holding head which holds and rotates a semiconductor substrate is provided above a first region extending from the central portion to peripheral portion of the polishing pad. The semiconductor substrate rotated by the substrate holding head is pressed against the first region of the polishing pad. A slurry is dropped in a prescribed amount from an abrasive supply pipe onto the polishing pad. Pad pressing means for pressing the polishing pad is provided above a second region extending from the central portion to peripheral portion of the platen. The pad pressing means has a disk-shaped pad pressing plate and a rotary shaft for holding the pad pressing plate.
REFERENCES:
patent: 5486131 (1996-01-01), Cesna et al.
patent: 5547417 (1996-08-01), Breivogel et al.
Matsushita Electric - Industrial Co., Ltd.
Nguyen George
Scherbel David A.
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