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Patent Searching and Data


Title:
SUBSTRATE POLISHING EQUIPMENT
Document Type and Number:
Japanese Patent JPH0831777
Kind Code:
A
Abstract:

PURPOSE: To provide a substrate polishing equipment which does not make the film thickness asymmetrical in polishing direction in the region between patterns obtained after polishing work.

CONSTITUTION: In a substrate polishing equipment for polishing and flattening a surface 14a where a pattern layer and the upper layer film of a wafer 14 is formed, provided are a polishing surface table 12 equipped with a polishing pad 13, a vacuum sucking table 15 for holding a wafer 1, a rotating table 16 for relatively turning a polishing surface table 12 and a vacuum absorbing table 15, and a control portion 10 for reversing the rotating direction of the rotating table 16.


Inventors:
OTA KAZUYA
YASUDA MASAHIKO
Application Number:
JP18300294A
Publication Date:
February 02, 1996
Filing Date:
July 13, 1994
Export Citation:
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Assignee:
NIKON CORP
International Classes:
B24B37/07; B24B37/10; H01L21/304; (IPC1-7): H01L21/304; B24B37/04
Attorney, Agent or Firm:
Masatoshi Sato (1 person outside)