An organic light-emitting display device includes: first and second pixel electrodes (PEs); a pixel-defining layer (PDL) disposed on the first and second PEs, the pixel-defining layer including first and second openings respectively exposing the first and second PEs; first and second intermediate layers (ILs) respectively disposed on the first and second PEs exposed via the first and second openings, each of the first and second ILs including an emission layer; first and second opposite electrodes (OEs) respectively disposed on the first and second ILs, the first and second OEs having an island-shaped pattern; first and second protective layers (PLs) respectively disposed on the first and second OEs, the first and second PLs having an island-shaped pattern; and a connection layer disposed on the first and second PLs, the connection layer electrically connecting the first and second OEs to one another.