Patent ID: 7586323
Filing Date: 2009-09-08
Classification: G02F

Abstract:
1. A liquid crystal display (LCD) inspection method comprising steps of: displaying images of various patterns on an LCD panel; extracting information of defects present in the LCD panel from each of the displayed pattern images; determining a method for displaying the defect information, based on a type of the extracted defect information; and displaying the defect information on the LCD panel in accordance with the determined display method; a foreign matter identification step for photographing an image of the LCD panel in a state in which illumination light is irradiated to a front surface and/or a rear surface of the LCD panel using first and second illumination units under a condition in which light emitted from a backlight unit toward the LCD panel is shut off, wherein the defect extraction step is executed to delete extract information about coordinates of foreign matter from the image photographed at the foreign matter identification step, thereby extracting defect information alone.