Adhesive bonding and miscellaneous chemical manufacture – Differential fluid etching apparatus – With microwave gas energizing means
Patent
1997-07-25
1999-08-17
Breneman, Bruce
Adhesive bonding and miscellaneous chemical manufacture
Differential fluid etching apparatus
With microwave gas energizing means
451288, 451398, B24B 3700
Patent
active
059388846
ABSTRACT:
A method and apparatus is disclosed for polishing the face of a semiconductor wafer. The wafer is held in position by a tooling head and is contacted by an abrasive pad. A table is provided on to which the abrasive pad is fixedly attached, both of which move in directions parallel to the face of the wafer being polished. A controller controls the motion of the table according to a predetermined polishing pattern and is capable of maintaining a constant velocity between the wafer and the abrasive pad. The tooling head includes a circular platen and a retention ring peripherally oriented about the outer edge of the platen which resists lateral forces on the wafer caused by engagement of the face of the wafer with the polishing surface. An adjustable coupling is mounted to the platen and the ring, and serves to adjustably position during polishing the height of the ring relative to the face of the wafer as well as to rigidly support during polishing the position of the retaining ring. A flexible disk is fixedly mounted between a support post and the platen and oriented substantially parallel to the face of the platen. The flexible disk is adapted to prevent rotation of the platen about the axis of the support post and to transmit forces between the platen and the post in directions parallel to the face of the platen.
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Dialog.RTM. English abstract of Japanese Publication No. 63-62668 (Mar. 18, 1988). Two pages total.
Publication No.: 08153692 A and translation of Patent Abstracts of Japan, Publication No. 08153692-A, No date.
Drawing figure labeled "Figure 6", no date.
Buhler James D.
de Geus Richard
Hollywood William K.
Hoshizaki Jon A.
Lee Lawrence L.
Ahmed Shamim
Breneman Bruce
Obsidian Inc.
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