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In the manufacturing process of a LCM(Liquid Crystal Display Module), many spot-type defects can be occurred on the surface of LCM due to various physical factors. The existence and pattern of such defects are very important in determining whether the LCM is normal or not. To enhance the accuracy and reproducibility of LCD inspection, this paper introduces an automated inspection method using a computer vision technique. The LCM defects are classified into macro-defects and micro-defects. Onedoi:10.4028/www.scientific.net/kem.270-273.808 fatcat:hdwwpz4v3ffadl575e6lohvvfu