Patent ID: 8044584

Claim:
An organic electroluminescent device, comprising: a substrate; an encapsulation substrate; an organic electroluminescent portion interposed between the substrate and the encapsulation substrate; and a transparent moisture absorption layer; wherein the transparent moisture absorption layer comprises: at least one of a metal oxide and a metal salt with an average particle diameter having a range of 50 nm to 90 nm; a binder; and a dispersant, wherein the binder comprises at least one selected from the group consisting of an organic binder and an organic/inorganic complex binder, wherein the organic binder includes at least one selected from the group consisting of an acrylic resin, a methacrylic resin, polyisoprene, a vinyl resin, an epoxy resin, a urethane resin, and a cellulose resin, wherein the organic/inorganic complex binder includes at least one selected from the group consisting of epoxy silane or its derivative, vinyl silane or its derivative, amine silane or its derivative, methacrylate silane or its derivative, and a partially cured product thereof, wherein at least one of the metal oxide and the metal salt has a difference of 100 nm or less between a particle diameter under which 10% by weight of the particles are to be found (D10) and a particle diameter under which 90% by weight of the particles are to be found (D90), and wherein the transparent moisture absorption layer has a transmittance of about 95% to about 98% at 380 nm to 780 nm and a moisture absorption of about 30% to about 50%.