摘要:
A segmented electroluminescent device (100) with resistive interconnect layers (102), each segment (104,104′, 104″) comprising an electroluminescent layer (110) arranged in between a first (106) and a second electrode (108) layer. The segments (104, 104′, 104″) are connected via resistive interconnect layers (102), the resistive interconnect layers having a larger square resistance than the second electrode layer. The resistive interconnect layers (102) add a ballast resistance to the electroluminescent device such that no additional electric ballast is needed. As the electric ballast is divided over multiple layers the problem of a heat management for the electric ballast becomes less important. By adding an isolation layer (122) the surface of the resistive interconnect layers (102) can be increased to almost the whole surface of the electroluminescent device (100). The system of the electrode layer (108), the isolating layer (122) and the resistive layer (102) functions as a capacitor.
摘要:
The present invention relates to an electroluminescent device comprising: first electroluminescent layer (102; 102′, 102″, . . . ), a first electrode layer (104; 104′, 104″, . . . ) arranged on a first side of the electroluminescent layer and a second electrode layer (106; 106′, 106″, . . . ) arranged on a second side, opposing the first side of the electroluminescent layer, for supplying charges to the electroluminescent layer, the first electrode layer consisting of an opaque material and the second electrode layer consisting of a transparent material, a single first contact element (108) for contacting the first electrode layer with a charge supply, and a single second contact element (114) for contacting the second electrode layer with the charge supply, wherein the first contact element extends along a first edge (110) of the first electrode layer, wherein the second contact element extends along a second edge (115) of the second electrode layer, wherein the first and second edges are parallel to each other, the first electrode layer having a first square resistance, and the second electrode layer having a second square resistance, the first square resistance being from 0.1 to 3 times the second square resistance.
摘要:
The present invention relates to a supply circuit (1) comprising: a bridge circuit (3) comprising at least two series-connected switches (M1, M2) being coupleable to a load circuit (11), a resonant circuit (5) coupleable at one end to a power source (7) and coupled at another end to the interconnection (15) of the at least two switches (M1, M2) of the bridge circuit (3), and at least two diodes (D1, D2), wherein a diode is coupled between each switch (M1, M2) and the power source (7).
摘要:
The present invention relates to a supply circuit (101) comprising: a bridge circuit (103), at least one resonant circuit (107) coupled to the bridge circuit (103), the at least one resonant circuit (107) being coupleable to a load circuit (109) comprising one or more loads (111), at least one supply switching unit (129) coupled between the bridge circuit (103) and an associated load circuit (109) for connecting and disconnecting the load circuit (109) from the bridge circuit (103), and a control unit (131) for controlling the at least one supply switching unit (129) in synchronization with a resonant current (Ires) of the resonant circuit (107) associated with said supply switching unit (129).
摘要:
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).
摘要:
The present invention relates to a device and method for controlling the color point of an LED light source (50). Color point control is a most interesting product feature both for white and colored LED light sources. In known methods for the color control of RGB LED light sources use is made of flux and color sensors. However, there are difficulties with respect to sensing quickly changing ambient light, deeply dimmed colors, coordinating the measurements with the switching of the LEDs, and controlling the color in LED light units comprising a number of independent LED lamps, e.g. segmented wall washers and LCD backlights. It is proposed according to the present invention to control the color of the LED light source (50), using a model-based feed forward approach. Factors relating the parameters controlling the LED currents to the brightness for the different colors (and segments) are stored and used for open loop control. A slow-running procedure continuously measures and updates these factors. Whilst the measurements are e.g. synchronized with the PWM, the procedure itself can run considerably slower and updates the factors asynchronously.
摘要:
The invention relates to light-emitting diodes (O-LED). In particular, it relates to the driver electronics needed for these devices. An organic electroluminescent device is provided, which has a hermetically closed very flat housing. To improve the functionality of an O-LED, considerably reduce the height of an O-LED module and allow a cost-effective mass production, the driver circuit and the electronic driver elements or the printed circuit board (PCH) with the electronic driver elements are incorporated into the cover plate of the device.
摘要:
Devices (1) comprising liquid crystal displays (2) are given a reduced size by providing the liquid crystal displays (2) with liquid crystal display panels (21), with backlights for improving performances of the liquid crystal display panels (21), which backlights comprise organic light emitting diode backlights (23), and with backlight drivers (24) for driving segments of the organic light emitting diode backlights (23). This way diffusers can be avoided. The segmented organic light emitting diode backlights (23) are in the form of flat substrates and produce white light naturally. The backlight driver (24) may comprise scanning backlight drivers for driving the segments of the organic light emitting diode backlights (23) in a scanned way for reducing blur phenomena of the liquid crystal display panels (21) and/or may comprise individualizing backlight drivers for driving the segments of the organic light emitting diode backlights (23) or of ordinary backlights (26) in an individualized way for individualizing intensities of liquid crystal display panel segments.
摘要:
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.
摘要:
The invention relates to a light emitting device (10), with at least one first (20) and at least one second section (30), wherein the first section (20) borders the second section(30) and each section (20,30) comprises a bottom side (21,31) and at least one side surface (22,32), each section (20,30) comprises a stack of layers (15) of a substrate, with a basic layer (40), a first electrode layer (41), a second electrode layer (42) and an organic light-emitting layer (OLED) (43), wherein the organic light-emitting layer (43) is sandwiched between the first electrode layer (41) and the second electrode layer (42), the organic light-emitting layer (43) is emitting an artificial light (45,45), in an expanded position (100) the first section (20) and the second section(30) are longish stretched and the artificial light (45,45) is primarily emitted through the bottom sides (21,31) of the first section (20) and the second section(30), and in a compact position (110) the first section (20) faces the second section (30) at least partially in such a way, that the artificial light (45,45) is primarily emitted through the side surfaces (22,32) of the first section (20) and the second section (30).