Patent ID: 7400393
Filing Date: 2008-07-15
Classification: G01N

Abstract:
1. A defect inspection apparatus comprising: light source means for emitting light having a wavelength band in a range from an ultra-violet light range to a visible light range; light illuminating means including a wavelength selection unit for selecting a light beam having a desired wavelength from the light of the wavelength band emitted by the light source means and illuminating a specimen on which a wire pattern is formed with the selected light beam; detection means for receiving an optical image of the specimen illuminated with the light beam having the desired wavelength from the light illuminating means and outputting an image signal of the received optical image of the specimen; image processing means for processing the image signal output from the detection means to detect defects; control means for controlling at least one of the light source means, the light illuminating means, the image detection means and the image processing means; inspection information display means displaying on a screen data corresponding to the specimen and data corresponding to optical conditions of at least one of the light source means, the light illumination means, the image detection means and the image processing means; and input means for inputting information corresponding to a defect of interest and corresponding to the specimen including kind of specimen, process and lot number; wherein the control means, based on the information input from the input means, controls the wavelength selection unit to select the desired wavelength of the light beam to illuminate the specimen.