Patent ID: 8222811
Filing Date: 2012-07-17
Classification: H01L

Abstract:
1. An electronic display, illumination or signage device comprising a substrate coated on at least one of its faces with an electroluminescent unit comprising at least two electrodes, one internal electrode and one external electrode, between which is interposed a light-emitting structure, at least one of these electrodes being transparent to the emitted light, a protective cap being joined to the unit by way of an adhesive that covers a assembly face of the cap, characterized in that this adhesive also covers an adhesion promoting layer that surmounts the unit, said layer being deposited from precursors using atomic layer deposition (ALD), and which adhesion promoting layer is based on at least one inorganic compound compatible with the adhesive, a reactive metal sublayer that is able to react with at least one of these precursors being interposed beneath and in contact with this adhesion promoting layer, at least one dielectric intermediate layer that is transparent to the emitted light being placed between the external electrode and said reactive sublayer so as to form, with the external electrode and said reactive sublayer, a resonant cavity.