Patent · US Active

Filament and lighting device

US10969063B2 · kind B2 · utility

12Cited by

0References

19Claims

0Family size

Assignee

Osram OLED GMBH · DE

Inventors

Thomas Schlereth · Pentling, DE
Hagen Luckner · Pentling, DE

Key dates

Filing date	May 23, 2017
Grant date	Apr 6, 2021
Priority date	—
Expiry date	Nov 26, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/18165
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A filament includes a plurality of strings including radiation-emitting semiconductor chips electrically connected in series; and a plurality of contact structures to contact the strings, wherein the contact structures electrically connect to semiconductor chips at ends of the strings such that the strings are electrically drivable via the contact structures, and the filament is configured such that the strings are electrically drivable at least separately from one another via the contact structures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.