Organic optoelectronic device and method for encapsulating same

Abstract

The invention relates to an organic optoelectronic device, such as a display device, which is protected from the surrounding air by a sealed encapsulation which includes thin layers, and to a method for encapsulating the same. Said device has an electroluminescent unit having at least one active area () covered with a multi-layer encapsulation structure () and an electric connection area adjacent to the active area, the encapsulation structure including n stack(s) (n≧1) comprising an inorganic film F, . . . , Fn and a photosensitive layer C, . . . , Cn, including an internal stack FCin which Fcovers the active area and C, which is deposited in a liquid phase, is superposed thereon. According to the invention, the layer or each layer C, Cn is etched and covers the film F, . . . , Fn by extending around a peripheral edge () of the active area in at least one structured surrounding portion () ending beyond the adjacent connection area, and if n>2, the or each layer C, . . . , Cn surrounds the layer C, . . . , Cn−1 of the immediately underlying stack, such that the layer or each layer C, . . . , Cn passivates the film F, Fn and laterally protects the underlying active area from the developing solutions and solvents used for etching said layer C, . . . , Cn.