Patent ID: 7362123
Filing Date: 2008-04-22
Classification: G01N,G01R,G09G,Y10S

Abstract:
1. An inspection apparatus for a TFT substrate formed with a plurality of pixels, comprising: a reference substrate spaced apart from the TFT substrate and formed with a plurality of reference patterns corresponding to the pixels; a power supply to supply power to both a predetermined number of the plurality of pixels and at least one of the reference patterns corresponding to the predetermined number of the plurality of pixels to form an electric field in a space between the TFT substrate and the reference substrate; an electron beam emitter to emit an electron beam to travel from a first side to a second side of the space; an electron beam detector to detect the electron beam emitted from the electron beam emitter after passing through the space; and a controller to determine whether the TFT substrate includes a defective pixel based on a location of the electron beam detected by the electron beam detector.