Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Julia De Girolamo

Tony Maindron

Jean-Charles Souriau

Peter Reiss

Bernard Aventurier

Adeline Fournier

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&#x2267;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&#x3e;2, the or each layer C, . . . , Cn surrounds the layer C, . . . , Cn&#x2212;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.

Organic optoelectronic device and method for encapsulating same

The invention relates to a process for the non-covalent coating of a support by a hybrid organic/inorganic film, characterized in that it comprises the steps of: &#x2014;depositing a conjugated organic polymer comprising organic groups of X type onto the support; depositing nanoparticles comprising one or more organic groups of Y type onto the support, and in that the groups of X and Y types are capable of developing hydrogen-type bonds between themselves. Typically, the deposition steps are repeated, generally alternately, until the desired thickness for the film is obtained. The deposition may be carried out on the whole of the support or on one part of the latter only.

Thin films of conjugated polymers containing inorganic nanoparticles and process for the manufacture thereof

Growing community of inventors

La Tronche, France

Julia De Girolamo