Dark Spot Detection Method and Apparatus for Display Panel, and Computer Readable Storage Medium

A dark spot detection apparatus for a display panel, comprising a processor, wherein the processor is configured to perform the following acts:

• acquiring first luminances of a plurality of sub-pixels at a first viewing angle;
• acquiring a first mapping relationship between a first distance and a chief ray angle, wherein the first distance is a distance from a sub-pixel to a center of a display area of the display panel, and the chief ray angle is an included angle between a direction in which a luminous intensity of the sub-pixel is greatest and a direction perpendicular to the display panel;
• acquiring luminances of a single sub-pixel at a plurality of viewing angles, and obtaining a second mapping relationship between a viewing angle and luminance of the single sub-pixel;
• and
• determining second luminances of the plurality of sub-pixels at chief ray angles according to the acquired first luminances, the acquired first mapping relationship, and the acquired second mapping relationship, and marking a sub-pixel whose second luminance is lower than a luminance threshold as a dark spot.