Patent ID: 8391587
Filing Date: 2013-03-05
Classification: G09G

Abstract:
1. A liquid crystal array inspection apparatus, for acquiring imaging pictures by scanning a liquid crystal substrate in a two-dimensional manner with electron beams to inspect a liquid crystal substrate array based on the imaging pictures, comprising: a stage, for carrying the liquid crystal substrate; a plurality of electron guns, configured above the stage in an X direction and a Y direction; a scan control part, for controlling the scanning with the electron beams of the electron guns; a plurality of detectors, for detecting secondary electrons emitted during the scanning with the electron beams of the electron guns; an image processing part, for generating imaging pictures of imaging ranges scanned by the plurality of electron guns according to detection signals of the detectors; an correction-amount calculating part, for determining amounts of displacement of the imaging range of each electron gun in the X direction and the Y direction according to the imaging picture, generated by the image processing part, of the stage, and calculating amounts of correction for correcting displacements of the imaging range of the each electron gun in the X direction and the Y direction according to the amounts of displacement; and a defect determining part, for inspecting a defect of the liquid crystal substrate array according to the imaging pictures, generated by the image processing part, of the substrate, wherein the scan control part controls the scanning with the electron beam in the X direction based on the amount of correction for correcting the displacement of the imaging range in the X direction calculated by the correction-amount calculating part.