An organic light emitting display device includes first and second substrates, a display unit on the first substrate, a metal layer on the first substrate and including a plurality of first straight and curved portions arranged to surround the display area, and a sealant bonding the first substrate and the second substrate, the sealant at least partially being on the metal layer and including a plurality of second straight and curved portions arranged to surround the display area, wherein the metal layer includes an inner area facing toward the display unit and an outer area outside the inner area in a width direction, the inner area in the first curved portions being thinner in the width direction than the inner area in the first straight portions.