A display panel includes: a substrate including a main display area, a component area, and a peripheral area; a main sub-pixel and a main pixel circuit, the main sub-pixel being in the main display area on the substrate, and the main pixel circuit being connected to the main sub-pixel; a plurality of auxiliary sub-pixels in the component area on the substrate; a plurality of auxiliary pixel circuits in the peripheral area on the substrate; a plurality of connecting lines connecting the plurality of auxiliary sub-pixels to the plurality of auxiliary pixel circuits, respectively; and a dummy line extending in a direction in which the plurality of connecting lines extend in the component area.