The first transparent cathode 33 is disposed at a side of the first light-emitting layer 32 away from the first anode 31, i.e., the first anode 31 and the first transparent cathode 33 are disposed at both sides of the first light-emitting layer 32. Further, the first light-emitting layer 32 may further include an auxiliary film layer (not shown) such as an electron transport layer, a hole transport layer, or the like. A pixel dielectric layer 34 is formed under the first transparent cathode 33, between the first anode 31, the first light-emitting layer 32 of the first sub-pixel region 1 and the first anode 31, the first light-emitting layer 32 of the second sub-pixel region 2.

The first transparent cathode 33 covers the plurality of first sub-pixel regions 1 and the plurality of second sub-pixel regions 2. In an embodiment, the color of the light emitted by the first light-emitting layer 32 may be green. Since the human eye is sensitive to green, by extending the green sub-pixel to the second sub-pixel region 2 having the through hole 111, even if the second sub-pixel region 2 is not provided with the green light-emitting layer, the display effect will not be greatly affected. In other embodiments, the color of the light emitted by the first light-emitting layer 32 may also be red, blue, or the like.