Abstract: The present invention relates to a method for adjusting a color point (507, 509, 511) of light emitted (111) from an organic light emitting diode OLED (107) by using current (115) with a modulated waveform for driving the OLED (107), wherein the waveform is characterized by at least three different parameters, and wherein the color point (507, 509, 511) is located in a color space, the method comprising: - defining a color point target (501);-adjusting simultaneously the at least three parameters to tune the waveform such that the resulting light output of the OLED (107) is lying within a predefined area around the color point target and for which the brightness of the OLED (107) remains at a predefined level; and-employing the tuned waveform to provide the current (115) with the modulated waveform to the OLED (107).

Abstract: The invention relates to a light apparatus (1) for generating light. The light apparatus comprises a light emission structure (2) including light emission material (9), a capacitor structure (3) including at least two capacitor electrode films (11, 12) and a dielectric film (14) between the capacitor electrode films, and a film encapsulation (30) including at least one film for encapsulating and thereby protecting at least the light emission material. The capacitor structure is integrated in the light apparatus such that the capacitor electrode films and the dielectric film are at least partly arranged in parallel to the light emission structure. Since films, in particular, thin films, are used for the capacitor structure and the encapsulation and since the capacitor structure is integrated in the light apparatus, the light apparatus can be relatively thin.

Abstract: Driver arrangements (100) drive first organic light emitting diode circuits (1) coupled to reference terminals (10) and first output terminals (11) and drive second organic light emitting diode circuits (2) coupled to the first output terminals (11) and to second output terminals (12). The driver arrangements (100) comprise first/second elements (21/22) coupled to the first/second output terminals (11) and the reference terminals (10) and first/second switches (31/32) coupled to power source terminals (14) and the first/second output terminals (11/12) for controlling the stacked organic light emitting diode circuits (1, 2) individually. The switches (31, 32) and the first elements (21) comprise transistors and the second elements (22) comprise transistors or diodes. The first/second elements (21/22) and the first/second switches (31/32) are coupled to each other and via first/second inductors (41/42) to the first/second output terminals (11/12).

Abstract: The invention relates to a current determination apparatus for determining an operational driving current for driving a light source of a group of light sources. A same color shift function defining a light color shift depending on a driving current can be provided for all light sources of the group. An operational driving current is determined based on the color shift function such that the light color (43) of the light source of the group of light sources is shifted from a nominal color, which may be specific for each light source, to a light color (45) within a target color window (41). Since for the different light sources the same color shift function can be used, a determination of individual operational driving currents such that the light sources of the group emit light having substantially the same color can be simplified.

Abstract: The invention relates to a lighting device including a plurality of light emitting tiles. Each light emitting tile has at least one interface, which is adapted for signal transmission. By adding a connection element in between two neighboring interfaces of two neighboring light emitting tiles, the two light emitting tiles are connected in a daisy chain bus system. The daisy chain bus system is adapted for transmitting signals, the signals being indicative of power and/or color of each light emitting tile.

Abstract: The invention relates to a Reflector pole (1), which is used as a road marker, a road boundary, a sign pole or for similar applications related to road or pedestrian traffic, comprising a main body (2), featuring at least one light active field (3). According to the invention the light active field (3) comprises an organic light emitting diode (OLED) (4).

Abstract: An OLED device comprised of: an OLED means, a capacitive proximity sensing means for sensing a change in a capacitance, a mechanical element, and a means to provide a signal, wherein the OLED means and the mechanical element are movable relative to each other upon operation by a user and can assume a first position or a second position, wherein the capacitance is adapted to change between a first capacitance and a second capacitance when the OLED means and mechanical element are moved between the first position and the second position by an operator, and wherein the signal depends upon the capacitance.

Abstract: The invention relates to an electroluminescent device for emitting light having an adjustable color point. An electroluminescent region (1) emits light in response to a lighting current and a heating element (7) applies heat to the electroluminescent region A heating control unit (9) controls the heating element (7) in applying the heat in order to adjust the color point of the emitted light. The color point of the light emitted by the electroluminescent device is dependent on the temperature of the electroluminescent region (1). Since the electroluminescent device comprises a heating element (7) for applying heat to the electroluminescent region (1) and a heating control unit (9) for controlling the heating element (7) in applying the heat, the color point can be adjusted in a simple way by using the heating control unit (9).

Abstract: The invention relates to an organic light emitting diode (OLED) device (200) comprising a tag element (201) that encodes operating information about the device, for example its maximal driving current, such that this information can be read out wirelessly and/or electrically by wire but approximately without Ohmic losses. The invention further comprises a socket (600) with a read-out unit (601) for reading out the operating information from such a tag element (201). The tag element may for instance comprise a tag electrode (201) that can capacitively couple to a counter-electrode (601) in the socket.

Abstract: The invention relates to an organic light emitting diode segment (100) comprising two organic light emitting diodes (102; 104), wherein the organic light emitting diodes are vertically stacked with their conducting directions pointing in opposed directions, wherein in the stack the organic light emitting diodes (102; 104) are electrically connected to each other by a common shared electrode (112).

Abstract: The present invention relates to a LED light source comprising at least one layer of light emitting material (3), in particular organic light emitting material, sandwiched between two electrode layers (2, 4). At least one of the electrode layers (2, 4) is structured to form a pattern of electrode segments (5), each electrode segment (5) being in electrical contact with at least three of its nearest neighbor electrode segments (5) via direct electrical connections (6), which are designed to act as electrical fuses between the electrode segments (5). The invention allows the design of a large area LED light source having a homogeneous light density without the risk of failure of larger light emitting areas.

Abstract: The invention relates to an elongated power distributor (100) adapted to provide electrical power to an OLED device (104), the power distributor (100) comprising—a set of power cells (102), wherein the power cells (102) are arranged along the power distributor (100), each of the power cells (102) being adapted to provide substantially identical operating currents or voltages to the OLED device (104), and—means for mechanically fixing the power distributor (100) to the OLED device (104).

Abstract: The invention relates to supervision circuits (10) for supervising organic light emitting diode devices (1) via detection circuits (20) for detecting failure states of the organic light emitting diode devices (1) and for generating decision signals in response to detected failure states of the organic light emitting diode devices (1), which detected failure states have durations equal to or larger than time intervals. In response to the decision signals, the organic light emitting diode devices (1) can be bypassed and deactivated through switching circuits (30) such as bi-stable circuits. The failure states may include that the organic light emitting diode devices (1) have a relatively low impedance or “short” and a relatively high impedance or “open”. The supervision circuit (10) further prevents the organic light emitting diode devices (1) from being bypassed unjustly.

Abstract: A power supplying device (20) is provided for providing electrical power to a power receiving device (30), the power supplying device (20) comprising two plates (22), two electrode structures (23, 43, 81, 82) being arranged to be coupled to an AC power source (41) and at least one power transmitter (21). Each electrode structure (23, 43, 81, 82) is attached to one of said two plates (22). The power transmitter (21) is situated in between the two plates (22) and comprises an electrically conductive coil (28) and at least two electrical contacts (25) coupled to the electrically conductive coil (28). The plates (22) and the power transmitter (21) are arranged such that the power transmitter (21) is movable in a direction parallel to the surfaces of the plates (22) with the electrical contacts (25) in contact with the respective two electrode structures (23, 43, 81, 82) for obtaining power from the AC power source (41).

Abstract: The present invention relates to a control module (30) for a lighting system, which lighting system (10) comprises a base module (11) with at least two parallel electrodes (16) and at least one light module (20) coupled with said electrodes (16), said control module comprising: a controller (30) adapted to control at least one parameter of the at least one light module (20), and a holding member (28) adapted to removably hold said control module in engagement with said electrodes (16) of said lighting system (10). It also relates to a lighting system and a light module (20) for such a lighting system.

Abstract: The invention relates to an illuminated tiling system (100) which comprises back panels (10) with at least one electrically conductive layer (12, 13), plugs (20) with projections (21, 23) that electrically contact the conductive layer(s) (12, 13), and light-tiles (30) with (O)LEDs that can be fixed to the plugs. For an easy tiling, dummy-tiles can first be tiled together with conventional tiles (2) and later be replaced with the light-tiles (30).

Abstract: Devices (10) for driving loads (20) such as organic/inorganic light emitting diodes are provided with drivers (11) for driving the loads (20), with converters (12) for converting first parameter signals defining parameters of the loads (20) into second parameter signals each being defined by one bit per time interval, and with digital controllers (13) for controlling the drivers (11) in response to the second parameter signals. The converter (12) may comprise a comparator circuit (40) and a timer circuit (41) for comparing the first parameter signal with a reference signal and for generating the second parameter signal having a respective first or second value of two possible values in case of a respective first or second comparison result. The parameter may be a current flowing through or light emitted by at least a part of the load (20). The driver (11) may be a buck/boost/buck boost/fly back converter.

Abstract: Supply circuits (1-3,101-102,201-203) for supplying output current signals to loads (6,106,206) and comprising first circuits (1,101,201) with transistors (11-14,111-112,211-212) for converting input voltage signals into pulse signals and comprising second circuits (2,102,202) with resonance circuits for receiving the pulse signals and for supplying the output current signals to the loads (6,106,206) are provided with third circuits (3,203) for controlling the first circuits (1,101,201), which third circuits (3,203) comprise generators (35-37) for generating control signals for controlling the transistors (11-14,111-112,211-212) for reducing dependencies between the input voltage signals and the output current signals. The third circuits (3,203) supply the control signals in dependence of the input voltage signals and independently from the output current signals. The transistors (11-14,111-112,211-212) may form a full bridge, a full bridge operated in a half bridge mode, or a half bridge.

Abstract: The invention concerns an OLED device with a cathode 1, an anode 2 and an active stack 3, wherein the anode 1 is segmented into a plurality of anode segments 8 each defining an OLED segment 4. Further, a capacitance measuring unit 12 is provided which is arranged for measuring a plurality of capacitance coefficients between two anode segments 8 and/or between an anode segment 8 and surrounding earth, respectively. This way, an OLED device for illumination purposes with a reliable proximity sensing function is achieved.

Abstract: The invention relates to alighting device comprising a plurality of light emitting tiles. Each light emitting tile has at least one interface, which is adapted for signal transmission. By adding a connection element in between two neighboring interfaces of two neighboring light emitting tiles, the two light emitting tiles are connected in a daisy chain bus system. The daisy chain bus system is adapted for transmitting signals, the signals being indicative of power and/or colour of each light emitting tile.