Optoelectronics device was emitting diodes has improved light extraction

The invention relates to an optoelectronic device (5) comprising a substrate (10) semiconductor device comprising a face (12), light emitting diodes (LEDs) based on the face and comprising semiconductor elements (20) wired, conical or frustoconical and a layer dielectric (34) at least partially transparent covering the light emitting diodes, the refractive index of the dielectric layer being between 1.6 and 1.8.