Color temperature variable light emitting diode module, lighting device using the light emitting diode module and method for fabricating the light emitting diode module
US10874001B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2019 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/851
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a color temperature variable light emitting diode module that is driven when alternating current power is applied thereto. The light emitting diode module includes: a substrate; and a plurality of light emitting diode groups arranged on a substrate and including a first light emitting diode group emitting light at an input voltage level equal to or above a first reference voltage and a second light emitting diode group emitting light at an input voltage level equal to or above a second reference voltage higher than the first reference voltage. The first light emitting diode group includes: a first light emitting diode unit consisting of one or more light emitting diodes connected in series with each other and a second light emitting diode unit connected in series with the first light emitting diode unit and consisting of one or more light emitting diodes connected in series with each other; first wavelength converting elements disposed on the corresponding light emitting diodes constituting the first light emitting diode unit and the second light emitting diode unit and converting primary light emitted from the first light emitting diode unit and the second light emitt…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.