Method for manufacturing a colour conversion optoelectronic device, including a step of optically forming surface potential patterns in an electret layer
US12278315B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Aug 9, 2024 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Aug 9, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0361
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing an optoelectronic device including an array of diodes and photoluminescent pads arranged opposite at least one diode, including making an electret layer over the array of diodes, by localized polarization or depolarization, optically, so as to form surface potential patterns; and making the photoluminescent pads, by contact of the electret layer with a colloidal solution containing photoluminescent particles, which are then deposited over the upper face of the electret layer opposite the predefined surface potential patterns, thereby forming the photoluminescent pads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.