Patent ID: 11901482
Assignee: ALEDIA
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A manufacturing method for manufacturing an optoelectronic device including an array of light-emitting diodes, including the following steps:
formation of the array of light-emitting diodes on a support face of a substrate, this step being carried out so that each light-emitting diode of the array of light-emitting diodes has an elongate wire-like shape according to a longitudinal axis extending according to a transverse direction of the optoelectronic device directed transversely to the support face of the substrate,
formation of spacing walls made of a first dielectric material transparent to the light radiation originating from each light-emitting diode of the array of light-emitting diodes, such that lateral sidewalls of each light-emitting diode of the array of light-emitting diodes, over an entire height thereof considered according to the transverse direction, are surrounded by at least one of the spacing walls,
formation of light confinement walls made of a second material adapted to block the light radiation originating from each light-emitting diode of the array of light-emitting diodes, the light confinement walls directly cover lateral sidewalls of the spacing walls by being in contact with the spacing walls, so that the light radiation originating from each light-emitting diode of the array of light-emitting diodes and directed in a direction of an adjacent light-emitting diode of the array of light-emitting diodes is blocked by the light confinement walls which covers the spacing walls that surround each light-emitting diode of the array of light-emitting diodes,
wherein the step of formation of light confinement walls comprises a step of depositing a thin layer of the second material implemented so that this thin layer of the second material directly covers the lateral sidewalls of the spacing walls by being in contact with the lateral sidewalls of the spacing walls and covers upper borders of the light-emitting diodes of the array of light-emitting diodes and wherein the step of depositing the thin layer of the second material comprises a step of filling, by the thin layer of the second material, empty spaces delimited between the spacing walls at a level of areas between the light-emitting diodes of the array of light-emitting diodes.