An organic electroluminescent device includes first and second substrates spaced apart from each other, the first and second substrates including a first region and a second region, the second region outside the first region and including a concave portion, an array element on an inner surface of the first substrate, the array element including a switching element, an organic electroluminescent diode on an inner surface of the second substrate, a connection electrode electrically connecting the array element and the organic electroluminescent diode, the connection electrode between the first and second substrates, and a bar-type desiccant in the concave portion of the second region between the first and second substrates.