Array substrate, display panel, light-detecting method therefor and method for controlling the same

A display panel comprising:

• an array substrate comprising a plurality of pixel regions arranged in an array, the pixel regions each comprising a light-emitting region;
• an opposite substrate opposite to the array substrate;
• and
• a light-detecting circuit on the opposite substrate and configured to detect light emitted from the light-emitting region of at least one of the plurality of pixel regions.

A light-detecting method for a display panel, the display panel comprising:

• a plurality of pixel regions arranged in an array;
• and a light-detecting circuit in at least one pixel region, the light-detecting circuit comprising a photoresistor, wherein the light-detecting method comprises:
• detecting a resistance value of the photoresistor;
• and
• calculating an intensity of light emitted from the at least one pixel region in which the light-detecting circuit is provided, according to a mapping relationship between the resistance value of the photoresistor and the intensity of the light emitted from the at least one pixel region.