Light emission display element and device with polarized and angularly-controlled output
US11889717B2 · kind B2 · utility
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2References
24Claims
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Key dates
| Filing date | Dec 22, 2021 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments set forth light emission display elements, and display devices that include such display elements. In some embodiments, a display element includes an electroluminescent light source and a pair of reflective elements that form a resonant cavity for a particular range of wavelengths and/or a particular polarization of light. One or both of the reflective elements can include meta-reflectors, such as anisotropic meta-reflectors or chiral meta-reflectors. An optional waveplate can be placed between the reflective elements to adjust the polarization state of light emitted by the display element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.