Patent ID: 7863565
Filing Date: 2011-01-04
Classification: G01N,H01J

Abstract:
1. An electron beam inspection apparatus including: an electron optical system that irradiates a planar electron beam, which is emitted from an electron source, to irradiate a range covering a field of view on a sample; means for applying a voltage to the sample; electron beam imaging means for converging electrons, which are reflected from the sample due to the irradiated planar electron beam, so as to acquire a reflected-electron image; means that has the sample mounted thereon and moves the sample with respect to the irradiated planar electron beam; means that uses the reflected-electron image to extract a foreign matter or defect on the sample, and records a position of the foreign matter or defect on an image thereof; and an ultraviolet irradiation system that irradiates ultraviolet rays to irradiate an area of the sample concurrently with the electron optical system irradiating the planar electron beam to irradiate the range, comprising: means for adjusting so that the range irradiated by the planar electron beam includes area concurrently irradiated by the ultraviolet rays; and means for adjusting an intensity of the ultraviolet rays irradiated within the irradiated range of the concurrently-irradiated planar electron beam while sustaining imaging conditions for the reflected-electron image.