A display panel includes: a substrate including a main display area, a component area, and a peripheral area; an auxiliary display element in the component area; an auxiliary pixel circuit in the peripheral area and comprising an auxiliary thin-film transistor and an auxiliary storage capacitor; a transparent connection line connecting the auxiliary display element to the auxiliary pixel circuit; and a first organic insulating layer and a second organic insulating layer that are stacked between the substrate and the auxiliary display element in the component area, wherein the first organic insulating layer is between the transparent connection line and the auxiliary display element, and a refractive index of the first organic insulating layer is between a refractive index of the transparent connection line and a refractive index of the second organic insulating layer.