A display device includes a main display area, a component area including a transmission area, main sub-pixels disposed on a substrate corresponding to a main display area, and auxiliary sub-pixels disposed on the substrate corresponding to the component area. The component area includes a first component area and a second component area. Auxiliary sub-pixels arranged in the first component area and auxiliary sub-pixels arranged in the second component area have a same arrangement structure. An opaque layer is disposed between the substrate and the auxiliary sub-pixels in the second component area and includes a hole corresponding to the transmission area.