Light source with quantum dot layer
US10465861B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2016 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Jan 13, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source is realized in a wall portion and a base portion forming a flexible structure, a the wall portion having a plurality of inward facing LEDs thereupon, a bottom edge of the wall portion being adjacent to an edge of the wide portion. The resulting well is subsequently filled with a material to form an optical cavity, the height of the resultant optical cavity being matching a top edge of the wall portion. The top surface of the optical cavity is spin coated with a thin layer of quantum dots which serve to shift a wavelength of light emitted from the LEDs. Finally, a protective layer is applied to fix and protect the thin layer of quantum dots. Thus, a light source is realized which can reliably provide light at a specific wavelength defined by the interaction between the LEDs and quantum dots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.