A light shielding layer 11 is disposed on the substrate 10, and the light shielding layer 11 includes a plurality of through holes 111; a plurality of light detection units 4 are disposed at a side of the light shielding layer 11 adjacent to the substrate 10. The plurality of through holes 111 and the plurality of light detection units 4 are correspondingly disposed one by one. At least one of the plurality of through holes 111 is disposed in the second sub-pixel region 2, and a ratio of an area of an orthographic projection of the through hole 111 on the substrate 10 to an area of an orthographic projection of the second sub-pixel region 2 on the substrate 10 is about 50%.