A second driving circuit 7 and a second light-emitting unit 8 electrically connected with the second driving circuit 7 are disposed on the substrate 10 and located in the second sub-pixel region 2, and the orthographic projection of the second light-emitting unit 8 on the substrate 10 does not overlap with the orthographic projection of the through hole on the substrate 10, i.e., there is no overlapped portion therebetween, and the orthographic projection of the second driving circuit 7 on the substrate 10 does not overlap with the orthographic projection of the through hole 111 on the substrate 10, i.e., there is no overlapped portion therebetween. This avoids the light emitted by the first light-emitting layer 32 is incident on the light detecting unit 4 through the through hole 111 to cause interference, and affect detection effect. In this embodiment, the second light-emitting unit 8 is disposed on the substrate 10 and located in the second sub-pixel region 2, and projections of the second light-emitting unit 8 and the through hole 111 on the substrate 2 is avoided from overlapping, so that the detection accuracy is ensured and the display effect is enhanced. The area of the orthographic projection of the second driving circuit 7 on the substrate 10 is smaller than the area of the orthographic projection of the first driving circuit 5 on the substrate 10.

The second driving circuit 7 may be, for example, a 2T1C circuit, and the number of thin film transistors and capacitors included in the second driving circuit is smaller than the number of thin film transistors and capacitors included in the first driving circuit 5.