Optoelectronic device comprising light-emitting diodes with improved light extraction
US12027505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2019 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Mar 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0362
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An optoelectronic device including a support including a face; light-emitting diodes lying on the face and comprising including semiconductor elements in the form of wires, cones or truncated cones; for each light-emitting diode, an encapsulation block at least partially transparent to the radiation emitted by the light-emitting diodes and covering the light-emitting diode, the maximum thickness of the encapsulation block being comprised between 1 μm and 30 μm, interstices of air being present between the encapsulation blocks covering adjacent diodes; and an electrically conductive layer covering the encapsulation blocks, wherein the refractive index of the encapsulation block covering at least one of the light-emitting diodes is comprised between 1.3 and 1.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.