White-light QLED component, backlight module and illumination apparatus
US11342522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Aug 26, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A white-light QLED component, comprising: a transparent substrate, an anode layer, a HI layer, a HT layer, an emission layer, an ET layer, and a cathode layer. The emission layer is incorporated with a plurality of yellow QDs and a plurality of blue QDs, wherein the yellow QDs and the blue QDs have a mixing ratio in a range between 1:4 and 1:8. Experimental data have revealed that, a color temperature of a white light radiated from the white-light QLED component is modulatable by adjusting the weight percent of the yellow QDs in the emission layer, such that the QLED component can be decided to provide a cold white light, a pure white light or a warm white light. It can also control the white-light QLED component to optionally emit cold white light, pure white light or warm white light by modulating a bias voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.