An organic light-emitting display device, comprising: an organic light-emitting display unit comprising: a front substrate comprising a front surface and a first side surface, a rear substrate comprising a rear surface and a first side surface, the rear substrate opposing the front substrate, an array of organic light-emitting pixels interposed between the front and rear substrates, a frit seal interposed between the front substrat and the rear substrat while surrounding the array, wherein the frit seal, the front substrate and the rear substrate together define an enclosed space in which the array is located, the frit seal comprising a first side surface opposite to said enclosed space, and a first side of the display unit defined at least in part by the first side surfaces of the front substrate, the rear substrate and the frit seal; the display device further comprising: a bracket comprising a first surface generally opposing the first side of the display unit and connected to the first side of the display unit; and a reinforcement material interconnecting the first surface of the bracket and the first side of the display unit, wherein the front substrate, the rear substrate and the first side surface of the frit seal together define a gap space, and wherein the reinforcement material comprises a portion extending into the gap space and interposed between the front and rear substrates, and wherein the reinforcement material comprises a layer comprising a polymeric material. an organic light-emitting display unit comprising: a front substrate comprising a front surface and a first side surface, a rear substrate comprising a rear surface and a first side surface, the rear substrate opposing the front substrate, an array of organic light-emitting pixels interposed between the front and rear substrates, a frit seal interposed between the front substrat and the rear substrat while surrounding the array, wherein the frit seal, the front substrate and the rear substrate together define an enclosed space in which the array is located, the frit seal comprising a first side surface opposite to said enclosed space, and a first side of the display unit defined at least in part by the first side surfaces of the front substrate, the rear substrate and the frit seal; a front substrate comprising a front surface and a first side surface, a rear substrate comprising a rear surface and a first side surface, the rear substrate opposing the front substrate, an array of organic light-emitting pixels interposed between the front and rear substrates, a frit seal interposed between the front substrat and the rear substrat while surrounding the array, wherein the frit seal, the front substrate and the rear substrate together define an enclosed space in which the array is located, the frit seal comprising a first side surface opposite to said enclosed space, and a first side of the display unit defined at least in part by the first side surfaces of the front substrate, the rear substrate and the frit seal; a bracket comprising a first surface generally opposing the first side of the display unit and connected to the first side of the display unit; and a reinforcement material interconnecting the first surface of the bracket and the first side of the display unit, wherein