Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Oledworks Gmbh

Philipp Wartenberg

Bernd Richter

Uwe Vogel

Volker Kirchhoff

Karsten Fehse

John W Hamer

Jeffrey Spindler

Gerd Bunk

Marina Kondakova

Matthias Jahnel

Stephan Brenner

Christoph Metzner

Jessy Schönfelder

Gaby Gotzmann

Beatrice Beyer

Stefan Saager

Elisabeth Bodenstein

Daniel Glöss

Mario Metzner

Matthias Schober

Susan Mühl

Provided is a semi-transparent display and a method for producing a semi-transparent display. An SOI wafer is provided, the surface having at least one pixel region and at least one contact region arranged next to the pixel region, the SOI wafer comprising a silicon substrate on the rear side. At least one electromagnetic-radiation-emitting layer is deposited on the front side of the SOI wafer. At least one transparent cover layer is applied above the at least one electromagnetic-radiation-emitting layer. A wiring carrier is fastened to the assembly comprising the SOI wafer, the electromagnetic-radiation-emitting layer and the transparent cover layer. Before fastening of the wiring carrier to the assembly, the silicon substrate is removed from the assembly, producing a residual assembly, and electrically conductive connections are formed between the contact region of the SOI wafer and the wiring carrier from the rear side of the SOI wafer.

Semi-transparent display

A microdisplay comprising a light emitting OLED stack on top of a silicon-based backplane with individually addressable pixels and control circuitry wherein the light emitting OLED stack has three or more OLED units between a top electrode and a bottom electrode; and the control circuitry of the silicon-based backplane comprises at least two transistors with their channels connected in series between an external power source VDD, and the bottom electrode of the OLED stack. The light-emitting OLED stack preferably has a Vth of at least 7.5V or more. The control circuit can include a protection circuit comprised of a p-n diode, preferably a bipolar junction transistor.

Stacked OLED microdisplay with low-voltage silicon backplane

A display comprising a light emitting OLED stack on top of a silicon-based backplane with individually addressable pixels and control circuitry wherein the control circuitry of the silicon-based backplane comprises at least one driving transistor where a first terminal of the driving transistor is electrically connected to an external power source VDD, and the second terminal of the driving transistor is electrically connected to the bottom electrode of the OLED stack; wherein the gate of the driving transistor is controlled by a data signal which supplied by a scan transistor controlled by a signal from select line SELECT; and the control circuitry additionally comprises a protection circuit comprising a bipolar junction transistor. There can be a switch transistor between the scan transistor and the gate of the driving transistor for microdisplay applications. The OLED stack can comprise two or more OLED light-emitting units.

OLED display with protection circuit

The invention relates to a method for activating a photocatalytically active, for example titanium-dioxide-containing, outer layer () deposited on a composite, by means of at least one element () generating a radiation, for example for generating ultraviolet radiation. The following method steps are comprised here: •a) forming the at least one radiation-generating first element () within the composite; •b) forming at least one sensor () within the composite; •c) recording an actual value of a physical variable characterizing luminous radiation by means of the at least one sensor (), wherein the luminous radiation is emitted by a light-generating second element (); •d) comparing the recorded actual value with a first threshold value within an evaluation device and switching on the at least one radiation-generating first element () if the actual value is below or above the first threshold value.

Method for activating a photocatalytically active outer layer deposited on a composite

Method for the production of a semi-transparent display, and a semi-transparent display

A micro-structured organic sensor device which has the following layers oriented in parallel to one another:

Micro-structured organic sensor device and method for manufacturing same

A component for detecting electromagnetic radiation comprising a first functional layer, in which at least one first element is embodied by which electromagnetic radiation of a first wavelength range can be detected, with the first functional layer being deposited on one side of the substrate. On the opposite side of the substrate a second functional layer is deposited, in which at least one second element is embodied by which either electromagnetic radiation of a second wavelength range can be detected, with the first functional layer and the substrate being transparent with regards to the electromagnetic radiation of the first wavelength range, or by which the electromagnetic radiation of a second wavelength range can be emitted.

Component for detecting electromagnetic radiation

A method for producing a component is provided, where the component comprises a substrate, which emits at least one electromagnetic radiation in a first wavelength range and an electromagnetic radiation in a second wavelength range within one surface area. Electrodes can be formed within the surface area of the substrate; a first layer stack can be deposited, comprising at least one layer, which causes the emission of the electromagnetic radiation in the first wavelength range, and a cover layer, acting as the first counterelectrode, on the entire surface area; the first layer stack can be removed from a first partial surface area, which comprises at least one electrode; a second layer stack can be deposited, comprising at least one layer, which causes the emission of the electromagnetic radiation in the second wavelength range, and a second cover layer, acting as the counterelectrode, on the entire surface area.

Method for producing a multi-colored light emitting component

Growing community of inventors

Dresden, Germany

Philipp Wartenberg