Filament structure, lighting device having a filament structure, and method for producing a lighting device having a filament structure
US10865947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L25/0753
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A filament structure, a lighting device with filament structures, a method for manufacturing a lighting device and a method for manufacturing a filament structure are disclosed. In an embodiment, a filament structure includes at least two filament elements, each of the at least two filament elements comprising a leadframe element having a first end region and a second end region and a plurality of light-emitting diodes arranged on the leadframe element, at least one connecting element connecting the first end region of one of the at least two filament elements to the first end region of another of the at least two filament elements so that the at least two filament elements are connected in series and at least one further filament element including a leadframe element comprising a first end region and a second end region and a plurality of light-emitting diodes, wherein the leadframe element of the further filament element is a part of an one-piece leadframe, wherein the first end region of the leadframe element of the further filament element is connected via the connecting element to the first end regions of the at least two filament elements and wherein the connecting element is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.