Osram Opto Semiconductors Gmbh

Osram Oled Gmbh

Hagen Luckner

Frank Singer

Peter Brick

Matthias Sabathil

Stefan Groetsch

Thomas Schlereth

Thomas Haug

Alexander Sauerer

Stefan GRÖTSCH

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.

Filament and lighting device

A light emitting diode (LED) lightning module is disclosed. The LED lighting module includes a heat sink, a circuit board, a carrier, semiconductor chips such as LEDs arranged on an upper surface of the carrier, and at least one holding device pressing a lower surface of the substrate against an upper surface of the heat sink. The semiconductor chips are electrically connected to the carrier. The carrier is electrically connected to the circuit board.

LED lighting module for vehicle headlight

A luminescence diode chip includes a semiconductor layer sequence having an active layer suitable for generating electromagnetic radiation, and a first electrical connection layer, which touches and makes electrically conductive contact with the semiconductor layer sequence. The first electrical connection layer touches and makes contact with the semiconductor layer sequence in particular with a plurality of contact areas. In the case of the luminescence diode chip, an inhomogeneous current density distribution or current distribution is set in a targeted manner in the semiconductor layer sequence by means of an inhomogeneous distribution of an area density of the contact areas along a main plane of extent of the semiconductor layer sequence.

Luminescence diode chip

Growing community of inventors

Pentling, Germany

Hagen Luckner