Disclosed is an organic light-emitting display device capable of blocking the infiltration of oxygen and moisture, etc., simplifying the process and effectively preventing light leakage. In one embodiment, the organic light-emitting display device is a double side emission type organic light-emitting display device having at least two pixel regions emitting light in different directions. The device includes a first substrate with first and second pixel regions wherein a plurality of organic light-emitting diodes are formed. The device further includes a non-pixel region around the first and the second pixel-regions, a second substrate disposed on the upper part of the first substrate to be overlapped with the first and the second pixel regions and a part of the non-pixel region, and a frit provided between the first and the second substrates to be overlapped with at least one of the first and the second pixel regions and at least a part of the non-pixel region, where the frit in the non-pixel region is formed to be thicker than the frit opposing the first or the second pixel region. The first and the second substrates are adhered to each other by the frit in the part corresponding to the non-pixel region.