Patent · US Active

Illumination device and illumination system

US11373985B2 · kind B2 · utility

0Cited by

11References

18Claims

0Family size

Assignee

Osram OLED GMBH · DE

Inventors

Horst Varga · Lappersdorf, DE
Elmar Baur · Wahrenholz, DE
Alexander Wilm · Regensburg, DE

Key dates

Filing date	Mar 20, 2018
Grant date	Jun 28, 2022
Priority date	—
Expiry date	Mar 20, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lighting device and a lighting system are disclosed. In an embodiment, a lighting device includes at least one optoelectronic semiconductor chip, two contacts configured to couple the lighting device to a DC voltage and a driver circuit interconnected in series with the at least one semiconductor chip in a string, wherein the driver circuit comprises a monolithic, unhoused controller, wherein the driver circuit is configured to adjust a current for operating the at least one semiconductor chip, and wherein the string extends between the two contacts in an electrically coupling way.

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