Barco N.v.

Barco, Naamloze Vennootschap

Naamloze Vennootschap, Barco

Gino Tanghe

Robbie Thielemans

Patrick Willem

Herbert Van Hille

Nele Dedene

Robbie Thielemanns

An intelligent lighting module for use in a lighting or display module system which is composed of an array of lighting modules, each of the lighting modules being provided with a display board with an array of individual pixel lighting elements and with a control board capable of controlling serial input data from a video source for displaying video as well as of controlling digital communication input data from a lighting console for creating digital lighting effects, wherein the display board includes a drive buffer and an array of pulse-width modulation (PWM) drivers which are connected to the lighting elements.

Intelligent lighting module and method of operation of such an intelligent lighting module

A method of optimizing lifetime of an OLED display element and an OLED display element with optimized lifetime for possible use in a tiled display, while maintaining light output are described. It compensates an OLED operating parameter such as supply voltage and/or on-time of the operating current based on at least one environmental factor which affects aging and on at least one operating factor which is indicative of aging, e.g. by determining the brightness of an OLED display element. To optimize the light output, pre-charge of the aged OLED display elements can be optimized. The knowledge of the working temperature of OLED tiles may be used to regulate the cooling and thus the working temperature, thus improving the lifetime of the display. Furthermore the intensity and contrast of the display illumination may be set within predefined limits to reduce the aging.

Method and system for measuring and controlling an OLED display element for improved lifetime and light output

A control system for lighting and video devices, wherein said control system includes at least one video device; at least one lighting device; and a software protocol, capable of communicating three different protocols, such as a digital video/data protocol, a common lighting protocol and a data protocol to the video and lighting devices.

Control system and method for controlling lighting and video devices

The present invention is a pre-charge circuit integrated within the drive circuitry of a common anode, passive matrix, large-screen organic light-emitting diode (OLED) display device for overcoming the inherent capacitance characteristics Cof the OLED devices therein. More specifically, a first pre-charge circuit of the present invention includes a MOSFET device integrated within the normal drive circuitry for applying a pre-charge voltage to the cathode of a given OLED device just prior to the desired 'on' time, thereby overcoming Crapidly. A second pre-charge circuit of the present invention integrates within the normal drive circuitry a method of connecting the anode of a given OLED device to a positive voltage while concurrently connecting the cathode to ground just prior to the desired on time, thereby overcoming Crapidly. A third pre-charge circuit of the present invention includes an additional current source for supplying current over and above the normal operating current, which is activated just prior to the desired on time, thereby overcoming Crapidly. Finally, in a fourth pre-charge circuit of the present invention, a single current source is used that supplies a high current value just prior to the desired on time. Once the capacitor is charged, the output of this current source rapidly drops to the normal constant operating current.

Organic light-emitting diode (OLED) pre-charge circuit for use in a common anode large-screen display

An organic light-emitting diode drive circuit for a display application includes a plurality of organic light-emitting diodes (OLEDs) having an anode and a cathode, the organic light-emitting diodes being connected to anode lines and cathode lines, and at least one drive circuit. The organic light-emitting diodes are arranged in a common anode configuration, whereas the drive circuit is configured as a common anode drive device, so that each concerned cathode line can be connected by a respective first switch to a current source and so that each concerned anode line can be connected by a respective second switch to a positive power supply. The respective first switches are configured such that, when a cathode line is in use, a connection is made between the cathode line in use and the respective current source and, when the cathode line is unused, the cathode line is connected to a positive power supply.

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Merkem, Belgium

Gino Tanghe