| 摘要 |
The present invention provides an inspection method of image quality that includes a first step of calculating deviation between area-based average brightness and direction-based brightness of an image of a display module and determining whether the deviation in the brightness satisfies each of first and second reference ranges; a second step of calculating the spreading area width of the edge of a pattern included in the image and determining whether the spreading area width satisfies a third reference range; a third step of creating a grid removing image and a filter applying image from the image, creating a differential image from the grid removing image and the filter applying image, calculating a noise level of the differential image, and determining whether the noise level satisfies a fourth reference range. [Reference numerals] (AA) Start image quality check; (BB) End image quality check; (st110) Check brightness; (st210) Check focus; (st310) Check noise; (st410) Check tilt; (st510) Discover cause and perform correction |
