A dual panel type organic electroluminescent display device includes first and second substrates facing and spaced apart from each other, an array element layer on an inner surface of the first substrate and including a thin film transistor, a connection pattern on the array element layer and electrically connected to the thin film transistor, a first electrode on an inner surface of the second substrate, a partition wall on the first electrode in a non-pixel area between adjacent pixel areas, an organic light-emitting layer on the first electrode in the pixel area, a second electrode on the organic light-emitting layer in the pixel area and electrically connected to the connection pattern, a moisture absorption layer on the partition wall, and a seal pattern between the first and second substrates along a peripheral portion.