Optoelectronic device comprising pixels with improved contrast and brightness

US10923528B2 · kind B2 · utility

Assignee

• ALEDIA · FR

Inventors

• Tiphaine Dupont · Grenoble, FR
• Sylvia Scaringella · Eybens, FR
• Erwan Dornel · Fontaine, FR
• Philippe Gibert · La Burletière, FR
• Philippe Gilet · Amilly, FR
• Xavier Hugon · Amilly, FR
• Fabienne Goutaudier · Grenoble, FR

Key dates

• Filing date: Jun 22, 2017
• Grant date: Feb 16, 2021
• Expiry date: Jun 22, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8583

Abstract

An optoelectronic device including a substrate including first and second opposite surfaces and lateral electrical insulation elements extending in the substrate and delimiting first electrically-insulated semiconductor or conductive portions. The optoelectronic device includes, for each first portion, an assembly of light-emitting diodes electrically coupled to the first portion. The optoelectronic device includes an electrode layer covering all the light-emitting diodes, a protection layer covering the electrode layer, and walls extending in the protection layer and delimiting second portions surrounding or opposite the assemblies of light-emitting diodes. The walls contain at least one material from the group including air, a metal, a semiconductor material, a metal alloy, a partially transparent material, and a core made of an at least partially transparent material covered with an opaque or reflective layer.