Patent ID: 7663313

Claim:
An organic electroluminescent display device, comprising: a transparent substrate; an organic electroluminescent unit arranged on a surface of the transparent substrate, and having a pair of opposing electrodes and an organic emissive layer adapted to emit light due to a recombination of electrons and holes supplied by the pair of opposing electrodes; a sealing member combined with the transparent substrate and adapted to transmit light emitted by the organic emissive layer to an exterior of the display device, and to protect the organic electroluminescent unit from external air and having a sealing portion along edges of the sealing member; a transparent porous material layer arranged directly on a surface of the sealing member opposite to the organic electroluminescent unit so as not to contact the sealing portion; the transparent porous material layer including a transparent material adapted to transmit light emitted by the organic emissive layer to the sealing member and to absorb moisture and to remain transparent even after absorption of moisture; and the transparent porous material layer including a porous oxide layer comprising one material selected from the group consisting of hydrated amorphous alumina; a binary compound of porous silica and hydrated amorphous alumina; a binary or higher compound including hydrated amorphous alumina and at least one of alkali metal oxide, alkali earth metal oxide, a metal halogen compound, metal sulfate, and metal perchlorinate; and a ternary or higher, multi-compound including hydrated amorphous alumina, silica, and at least one of hydrated amorphous alumina and at least one of alkali metal oxide, alkali earth metal oxide, a metal halogen compound, metal sulfate, and metal perchlorinate.