A display apparatus includes a plurality of sub-pixel groups. At least one of the sub-pixel groups includes a plurality of first sub-pixels to emit a first color of light, a plurality of second sub-pixels to emit a second color of light, and a dummy pixel between the first sub-pixels and the second sub-pixels. A first dummy driving transistor is connectable to one of the first sub-pixels and a second dummy driving transistor is connectable to one of the second sub-pixels.