Patent ID: 6879392
Filing Date: 2005-04-12
Classification: G01N

Abstract:
1. A method for inspecting defects, adapted to perform a series of test inspection for detecting emitted light from a substrate to be inspected by irradiating the substrate to be inspected with light, converting the emitted light into an image signal, and discovering a defect portion on the substrate to be inspected based on a digital image signal obtained by subjecting the converted image signal to A/D conversion, while changing a plurality of test conditions comprising a deflection setting, a wavelength range, power of light setting, and an image magnification which are set beforehand, wherein, as a result of the series of test inspections, images of the defect portion discovered on the substrate to be inspected under the respective test conditions are displayed side by side on a screen along with image features including contrast, a density difference metric, and a luminescence distribution for the plurality of test conditions, wherein, as a result of the series of test inspection, bits of information of the defect portion discovered on the substrate to be inspected under the respective test conditions are presented side by side for the plurality of test conditions, and an optimal test condition is selected based on the presented bits of information of the defect portion.