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

Oledworks Gmbh

Bernd Richter

Uwe Vogel

Philipp Wartenberg

Volker Kirchhoff

Karsten Fehse

John W Hamer

Jeffrey Spindler

Marina Kondakova

Gerd Bunk

Matthias Jahnel

Stephan Brenner

Christoph Metzner

Beatrice Beyer

Stefan Saager

Rigo Herold

Elisabeth Bodenstein

Torsten Richter

Mario Metzner

Matthias Schober

Susan Mühl

Phillipp Wartenberg

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

A method for the objective determination of capillary refill behavior on a human body surface in which a spatially and spectrally resolved optical detection is carried out by at least one detector device () at a skin surface area () having a predefined areal size and outer contour. Subsequently a predefined pressure p constant over the skin surface area () is exerted over a predefined time t; and the pressure effect is ended after expiry of this time t. The spatially and spectrally resolved optical detection is carried out by the detector device () and the respective capillary refill behavior is spatially and temporally determined at a time tup to which at least one first threshold value of the measurement values detected simultaneously with spatial resolution has reached the measurement value that had been optically detected before the start of the pressure effect.

Method and device for the objective determination of capillary refill behavior on a human body surface

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

A method for operating a bidirectional display comprising a substrate, on which a display array consisting of a multiplicity of light-generating image elements and a sensor array consisting of a multiplicity of light-detecting elements are formed, each light-detecting element being assigned at least one light-generating image element, and each light-detecting element having at least a photodetector, a reset switch, a transfer switch, a memory and a select switch. The exposure phase of a light-detecting element between two successive readout phases of the light-detecting element is in this case subdivided into at least two exposure subphases chronologically separated from one another, and the at least one light-generating image element assigned to the light-detecting element is activated at least temporarily between the two exposure subphases of the light-detecting element.

Method for operating bi-directional display

The present invention relates to a bidirectional display having a two-dimensional display array comprising a plurality of light-generating pixels and a two-dimensional camera array comprising a plurality of light-detecting elements, wherein the two arrays can each be electrically triggered line by line and are preferably interleaved in at least in some sections, featuring electrical triggering of the display array and of the camera array wherein, during light generation in a line of the display array, light detection with that line of the camera array which is closest to said line is deactivated, i.e. line-sequential electrical triggering of the bidirectional display.

Growing community of inventors

Dresden, Germany

Bernd Richter