Patent ID: 7873202
Filing Date: 2011-01-18
Classification: G06T,H01J

Abstract:
1. A method for reviewing defects of a semiconductor device, the method comprising: obtaining an image including a defect on the semiconductor device detected by a detection device using a scanning electron microscope at a first magnification; making a reference image from the image including the defect obtained at the first magnification; detecting the defect by comparing the image including the defect obtained at the first magnification with the reference image made from the image including the defect at the first magnification; and taking an image of the detected defect at a second magnification that is larger than the first magnification, wherein, when the defect cannot be detected by comparing the image including the defect obtained at the first magnification with the reference image made from the image including the defect obtained at the first magnification, another reference image without any defects is taken using the scanning electron microscope at the first magnification, and then the another reference image taken at the first magnification is compared with the image including the defect obtained at the first magnification, thereby detecting the defect.