Abstract: 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 SELECT1; 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.

Abstract: 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.

Abstract: A reflex coupler has an organic light emitter for generating a light signal and an inorganic photodetector with a detector area. The organic light emitter and the detector area are optically coupled as a result of radiation returned from an object onto which the light signal impinges, and the organic light emitter and the inorganic photodetector are integrated in one device.

Abstract: The invention relates to a method of controlling a passive matrix arrangement of organic light emitting diodes which can be used, for example, as a display for the rendering or display of visually perceivable information. It is the object of the invention to increase the service life of passive matrix arrangements with organic light emitting diodes with an increased presettable luminance of electromagnetic radiation emitted by organic light emitting diodes. In the method in accordance with the invention, the electrical current flow takes place via rows and lines of a passive matrix arrangement of organic light emitting diodes connected to an electrical power source. The electrical current flow is modulated in its pulse width, that is the respective switch-on time, to be able to observe presettable luminance values of the individual organic light emitting diodes. Larger pulse width/longer switch-on times thus result in a larger luminance of the emitted electromagnetic radiation.

Abstract: A reflex coupler has an organic light emitter for generating a light signal and an inorganic photodetector with a detector area. The organic light emitter and the detector area are optically coupled as a result of radiation returned from an object onto which the light signal impinges, and the organic light emitter and the inorganic photodetector are integrated in one device.

Abstract: A device for controlling an organic light-emitting diode having a normal operating mode and an adjusting mode has a driver for providing a control current in the normal operating mode; and an adjusting current in the adjusting mode. In addition, the device for controlling has a measuring sensor for detecting a forward voltage applied to the OLED in the adjusting mode, and an adjuster for adjusting the control current in dependence on the detected forward voltage in accordance with an adjusting device.