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Patent Searching and Data


Title:
SUPERPOSITION MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JPH11111590
Kind Code:
A
Abstract:

To provide a superposition measurement device wherein, for such case as temperature condition being different between when coordinate offset is measured and when wafer is measured, a stage can be so moved that the center of optical axis of a microscope and the center of a measurement mark are accurately aligned.

A thermometer 9 for measuring a temperature near a stage and a coordinate off-set correction part 10 for outputting a movement amount commanding value corrected, based on a temperature information of the thermometer 9 to a stage of a superposition measurement device are provided, and the stage is moved based on the corrected movement amount commanding value, so that the center position of optical axis of a microscope is aligned with the center position of measurement mark on a wafer.


Inventors:
KAWANA NOBUHIDE
Application Number:
JP26626197A
Publication Date:
April 23, 1999
Filing Date:
September 30, 1997
Export Citation:
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Assignee:
NIKON CORP
International Classes:
G01B11/00; G03F7/20; H01L21/02; H01L21/027; (IPC1-7): H01L21/027; G01B11/00