Patent ID: 7383156

Claim:
A wafer surface inspection device which detects scratches on a plurality of wafer surfaces on the basis of two-dimensional defect distribution information (an LPD map) for each wafer surface of the plurality of wafer surfaces supplied from a particle counter, and judges the acceptability of the wafer surface whereby the wafer surface inspection device prepares a report, comprising: input means for inputting the LPD map supplied from the particle counter; memory means for accumulating the LPD map for each of the plurality of wafers; and information processing means for the detection of the scratches on the wafer surface by detecting the cluster of LPD in the LPD maps accumulated in the memory means from said plurality of wafers and preparing a wafer surface information thereon; and judgment means for judging the existence of defects on a single wafer surface based on the wafer surface information prepared by the information processing means, whereby the report prepared by said wafer surface inspection device based on the judging concerning the acceptability of the wafer surface is provided to a user.