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Abstract

An organic light-emitting diode (OLED) device is described, comprising: a) a substrate; b) an OLED formed over the substrate comprising a first electrode, a partially transparent second electrode through which light from the OLED is emitted, and at least one layer of organic light-emitting material disposed between the first electrode and partially transparent second electrode; and c) an encapsulating layer deposited on the partially transparent second electrode, wherein the encapsulating layer comprises one or more component layers, and wherein the encapsulating layer and the partially transparent second electrode combined have a transparency greater than the transparency of the partially transparent second electrode in the absence of the encapsulating layer, or wherein the encapsulating layer and the partially transparent second electrode combined have an absorbance less than the absorbance of the partially transparent second electrode in the absence of the encapsulating layer. To provide adequate encapsulation, in accordance with various embodiments of the invention at least one component layer of the encapsulating layer is deposited by atomic layer deposition, or the total thickness of encapsulating layer is at least about 150 nm. In a preferred embodiment, both such features are incorporated.

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First Claim