METHOD AND APPARATUS FOR OPTICAL INSPECTION OF A DISPLAY

摘要

A method and apparatus for optically inspecting a display employs sub-pixel accuracy for each primary color to take into account angle of rotation (520). The method includes capturing images of a display with R x S sensors, determining sets of sensor coordinates mapping to a pixel (540), determining multiple misalignment angles between the pixel on the display and the R x S sensors, determining multiple x scaling ratios, determining multiple weighting factor associates with RxS sensors in response the corresponding multiple misalignment angle and the corresponding multiple x and y scaling ratios, and inspection the scaled image to identify potential defects of the pixel on the display (580).