LED filament, LED filament assembly and LED bulb
US9995474B2 · kind B2 · utility
4Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | May 31, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8511
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A LED filament includes a frame; two metal electrodes, respectively disposed on two sides of the frame; a LED chip assembly, comprising a plurality of LED chips disposed inside the frame and electrically connecting to the two metal electrodes respectively; and a gel comprising phosphor, wrapping the LED chip assembly and parts of the metal electrodes inside the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.