Optoelectronic device for luminous display with conductive luminous confinement walls and corresponding method of manufacture

A method for manufacturing an optoelectronic device for a light display, the manufacturing method including the following steps:

• a) providing a support delimiting a support face;
• c) forming a plurality of light elements fastened to the support face and comprising at least one light-emitting diode having an active part capable of emitting light when a current passes through the active part and at least one doped part;b) forming at least one first electrode covering at least an upper part of said doped part arranged on the side opposite to the support face, said at least one doped part being arranged to be in situation of electrical contact with said at least one first electrode, said at least one first electrode being electrically connected to at least one of the formed light elements;
• d) forming, after step b), a plurality of light confinement walls in which each formed light confinement wall has an ability to reflect all or part of the light emitted by at least one of the light elements and is arranged so as to surround all or part of said at least one of the light elements so as to reflect all or part of the light emitted by said at least one light element, step d) being such that all or part of at least one of the light confinement walls of the plurality of light confinement walls has the ability to be electrically conductive and directly connected to the first electrode of at least one of the light elements of said plurality of light elements, and
• a step of forming a second electrode, said optoelectronic device being such that the second electrode is electrically connected to at least one other light confinement wall of the plurality of light confinement walls, wherein said other light confinement wall is electrically insulated with respect to the light confinement wall in electrical contact with the first electrode of said light element.