Patent ID: 7325943

Claim:
An illumination or image-display panel comprising a one-dimensional or two-dimensional matrix of organic electroluminescent cells deposited on a substrate and grouped at least into rows, said matrix of cells comprising an electroluminescent layer placed between two layers of electrode arrays, namely one called the “lower” layer on the same side as the substrate and one called the “upper” layer of transparent or semitransparent electrodes on the other side, each cell being positioned in a region of overlap between an electrode of the lower layer and an electrode of the upper layer, said panel comprising for each cell or group of cells, an optical right extraction element which itself comprises: an entry interface optically coupled with the emissive surface of said cell or cells of the group so as to capture the rays emitted by said cell or cells; an exit interface; and an intermediate reflective surface that has a suitable curvature so that the rays emanating from the entry interface that strike said intermediate reflective surface are sent toward the exit interface so as to have there an angle of incidence smaller than the critical angle of retraction at this exit interface in order to pass through it, wherein said extraction elements are positioned on this upper layer, wherein said optical extraction elements of the panel are made up of a single piece forming an extraction layer and wherein the extraction layer forms an encapsulation layer.