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Title:
AUTOMATICALLY WAFER CHIPPING INSPECTING DEVICE
Document Type and Number:
Japanese Patent JP2001101409
Kind Code:
A
Abstract:

To provide an automatic wafer chipping inspecting device capable of accurately inspecting the presence/absence of chipping at the peripheral part of a wafer in a short time.

This device is provided with a stage 12 for placing wafer 13 and plural image detecting units U11, U12,..., U44 arranged so as to cover all the periphery of the wafer 13 oppositely to the stage 12. Each of respective image detecting units Uij (i=1 to 4 and j=1 to 4) takes a region opposite to the detecting unit Uij inside the wafer 13 into the field of view and outputs a signal expressing an image in that region. A processing means 2 is provided for parallel discriminating the presence/absence of chipping in each region at a peripheral part 13p of the wafer on the basis of the image signal outputted by each of image detecting units Uij.


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Inventors:
FUJIKI SHINICHI
Application Number:
JP27420799A
Publication Date:
April 13, 2001
Filing Date:
September 28, 1999
Export Citation:
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Assignee:
SHARP KK
SHARP MFG SYSTEM CORP
International Classes:
G01B11/24; G01B11/245; G01N21/956; G06T1/00; G06T1/20; G01B11/30; G06T7/00; H01L21/66; (IPC1-7): G06T7/00; G01B11/24; G01N21/956; G06T1/20; H01L21/66
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)