Patent ID: 7830502
Filing Date: 2010-11-09
Classification: G01N

Abstract:
1. A substrate inspection device, comprising: a substrate moving means, sequentially moving a plurality of substrates; an optical system, comprising a light-projecting system and a light-receiving system, wherein the light-projecting system irradiates the plurality of substrates moved by the substrate moving means with an inspection light having a specific width in a direction orthogonal to a moving direction of each of the plurality of substrates, and the light-receiving system receives a light from the inspection light reflected or scattered by defects of each of the plurality of substrates; an optical system moving means, moving the optical system in the direction orthogonal to the moving direction of each of the plurality of substrates, so as to change a scanned areas of each of the plurality of substrates which is scanned with the inspection light from the light-projecting system; a processing means, inspecting the defects of each of the plurality of substrates in the scanned area based on a light intensity received by the light-receiving system; a storage means, storing data of the defects of each of the plurality of substrates in the scanned area inspected by the processing means; and a control means, controlling the storage means and updating the data of the defects of each of the plurality of substrates in the scanned area stored by the storage means with data of the defects of each of the plurality of substrates newly obtained by the processing means in the same scanned area, and producing defect data of one substrate of the plurality of substrates based on the data of the defects of each of the plurality of substrates in the scanned area stored by the storage means.