Optoelectronic device comprising light-emitting diodes

An optoelectronic device comprising:

• a substrate, wherein the substrate is a doped semiconductor substrate of a first conductivity type, the substrate comprising a first surface and a second surface opposite the first surface;
• a first assembly of first light-emitting diodes supported by a first portion of the substrate and comprising first wire-shaped, conical, or frustoconical semiconductor elements;
• a first electrode, at least partially transparent, covering each first light-emitting diode;
• a first insulated conductive portion insulated from the substrate and crossing the substrate from the second surface to at least the first surface and connected to the first electrode;
• a second assembly of second light-emitting diodes supported by a second portion of the substrate and comprising second wire-shaped, conical, or frustoconical semiconductor elements;
• a second electrode, at least partially transparent, covering each second light-emitting diode;
• a second insulated conductive portion insulated from the substrate and crossing the substrate from the second surface to at least the first surface and connected to the second electrode;
• and
• a first conductive element, electrically connecting on the second surface side the first insulated conductive portion to the second substrate portion, wherein the first assembly of first light-emitting diodes is connected in series with the second assembly of second light-emitting diodes.