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US20120176035 LIGHTING ASSEMBLY  
Lighting assemblies having an electrical cable, light emitting diodes, and control circuits. The lighting assemblies are useful, for example in vehicles (e.g., automobile, trucks, etc.), as well...
US20130009558 BACKLIGHT UNIT  
There is provided a backlight unit (BLU). The BLU may include: a plurality of LED modules, each LED module including a plurality of LEDs; and one or more driving drivers controlling brightness of...
US20150216001 An LED Lighting System  
An LED lighting system comprises: lighting blocks; and one or more switches, wherein electrical connections between the lighting blocks are configured using the one or more switches, and wherein...
US20140159596 PHOSPHOR AND LED PLACEMENT FOR WHITE LED-BASED LAMPS  
A system including a base portion, which includes first and second sets of light emitting diodes (LEDs) to emit blue light having first and second wavelengths in first and second wavelength ranges...
US20130009546 LIGHT EMITTING DIODE (LED) LIGHTING FIXTURE  
A high power lighting fixture which includes a first multiple of first light emitting diodes (LEDs) mounted and series connected to form a first serial string of LEDs on a first circuit board. A...
US20140167632 LIGHT SOURCE COMPRISING A LED STRIP  
A LED light source comprising a LED strip supplied by a switch mode power supply is disclosed. The LED light source has a low power dissipation and is to a large extent independent of the...
US20120217886 BACKLIGHT UNIT  
The present invention relates to a backlight unit that includes at least one first light emitting diode (LED) package and at least one second LED package, wherein the first LED package includes a...
US20140191674 DIMMABLE LED LIGHT FIXTURE HAVING ADJUSTABLE COLOR TEMPERATURE  
Electronic circuitry for color-mixing in an LED light fixture during AC power dimming is disclosed to achieve adjustable color temperature. According to one embodiment, a dimmable LED light...
US20130063035 DIMMABLE LED LIGHT FIXTURE HAVING ADJUSTABLE COLOR TEMPERATURE  
Electronic circuitry for color-mixing in an LED light fixture during AC power dimming is disclosed to achieve adjustable color temperature. According to one embodiment, a dimmable LED light...
US20130021580 Systems and Methods of LED Color Overlap  
The disclosed systems and methods emphasize driving LEDs in series and in parallel with the same LED driver chip and a single inductor. For creating overlap, the systems and methods of LED color...
US20110234113 LED LAMP  
An LED lamp includes two LED modules and a control module. The LED modules emit lights with different color temperatures. The lights are mixed in the LED lamp and form an output light with another...
US20140097753 LED Lighting system for self-dissipation of heat  
A LED lighting system includes: a power unit for providing a power supply source for the lighting system, a LED circuit connected to the power unit for illuminating the light emitting diodes of...
US20110273100 USER PROGRAMMABLE LIGHTING CONTROLLER SYSTEM AND METHOD  
Lighting systems wherein the lighting effects can be customized by the user to include different colors or different color changing effects. The lighting systems are arranged to be used with...
US20110163683 Solid State Lamp Using Light Emitting Strips  
In one embodiment, an LED lamp has a generally bulb shape. The LEDs are low power types and are encapsulated in thin, narrow, flexible strips. The LEDs are connected in series in the strips to...
US20130293126 DRIVER FOR TWO OR MORE PARALLEL LED LIGHT STRINGS  
An LED driver for a plurality of LED light strings has a common node and a plurality of driver output nodes for connection of a plurality of LED light strings. A master power circuit is provided...
US20120119665 LIGHTING DEVICE WITH ADJUSTABLE COLOR TEMPERATURE  
A lighting device with adjustable color temperature includes a power, a driver, and a plurality of branches. The power is electrically connected to the driver for supplying power to the driver....
US20120268008 LED Circuits and Assemblies  
An AC-driven LED circuit 10 includes a first basic circuit 12 having a first branch 14 and a second branch 16 which connect at first and second common points 18, 20 wherein the common points 18,...
US20100315014 LED light string  
An electrical circuit for use as a string of lights in one embodiment includes a full-wave rectifier for converting an electrical source of AC into DC; and a load comprising a plurality of lamps...
US20120098443 WHITE AC LED  
A multi-color white LED which can be driven by a single current, and more particularly, to the use of a specific ratio of numbers of different color LEDs to obtain a specific desired color while...
US20140247295 REDUNDANT OPERATION OF A BACKLIGHT UNIT OF A DISPLAY DEVICE UNDER OPEN CIRCUIT OR SHORT CIRCUIT LED STRING CONDITIONS AND INCLUDING DYNAMIC PHASE SHIFTING BETWEEN LED STRINGS  
Disclosed embodiments relate to techniques for operating a backlight unit of a display device in a redundant mode and a non-redundant mode in the event of an open circuit condition or short string...
US20110062875 RESISTIVE BYPASS FOR SERIES LIGHTING CIRCUIT  
A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the...
US20140103824 LAMP  
A lamp includes a lamp tube, a carrier, a light bar circuit board, a driver circuit board, a plurality of first luminous elements and a parallel-connected type luminous unit. The carrier is...
US20140339992 LED Device with Shared Voltage-Limiting Unit and Individual Equalizing Resistance  
The present invention relates to a LED device with shared voltage-limiting unit and individual voltage-equalizing resistance, wherein two ends of a LED set constituted by a plurality of...
US20110248639 SAMPLING EXTERNAL VOLTAGE WHICH MAY EXCEED INTEGRATED CIRCUIT MAXIMUM VOLTAGE RATING  
An LED driver arrangement wherein a low voltage IC is arranged to sample the voltage at a terminal of each of the respective electronically controlled switches controlling a plurality of LED...
US20130038211 DISPLAY DEVICE AND LED BAR CONNECTION METHOD THEREOF  
Disclosed is a display device which includes a display panel, an LED bar configured to output a light to the display panel, and a source printed circuit board including a driver circuit driving...
US20110156593 BOOSTING DRIVER CIRCUIT FOR LIGHT-EMITTING DIODES  
Various embodiments relate to an light-emitting diode (LED) driver and related method that drives various LEDs in an LED string beyond their isolated nominal luminance. Individual LEDs in an LED...
US20140097760 DISPLAY APPARATUS AND METHOD OF EVALUATING VISIBILITY THEREOF  
A method of evaluating visibility of a plurality of sub-pixel structures in a panel having a plurality of red sub-pixels, green sub-pixels, and blue sub-pixels arranged in stripes, the method...
US20120098442 SYNCHRONOUS REGULATION FOR LED STRING DRIVER  
A light emitting diode (LED) based luminaire driving arrangement constituted of: a switched driver; a plurality of LED based luminaires arranged to receive power from the switched driver; at least...
US20140049172 LED Dimming Module  
The present invention proposes an LED dimming module (10) comprising two LED strings (1,2), the first LED string (1) comprising at least one color converted blue or UV LED (1a) and the second LED...
US20120194086 LIGHT EMITTING DIODE TUBE AND LIGHT EMITTING DIODE LAMP USING THE SAME  
A light emitting diode (LED) tube and an LED lamp using the same are provided. The LED tube is suitable for direct installation in a lamp holder which has a starter and a ballast. The LED tube...
US20110266964 ELECTRICAL APPLIANCE HAVING A LIGHTING DEVICE HAVING LIGHT EMITTING DIODES  
An electrical appliance, particularly a television or a monitor, having a lighting device (8) having light emitting diodes (12). The light emitting diodes (LED) (12) are collected in LED strings...
US20150042925 LED BACKLIGHT SOURCE AND LIQUID CRYSTAL DEVICE  
A LED backlight source and a liquid crystal device are disclosed. The LED backlight source includes: a boost circuit for boosting an input DC voltage and for outputting the boosted DC voltage; a...
US20110234112 LAMP DRIVING CIRCUIT  
The present invention provides a lamp driving circuit. When it is used to drive a number of lamps arranged in a hybrid serial-parallel configuration, the lamp driving circuit eliminates the...
US20130271500 LED Backlight Driving Circuit, Backlight Module, and LCD Device  
The invention provides an LED backlight driving circuit, a backlight module, and an LCD device. The LED backlight driving circuit includes LED light string(s); an anode of the LED light string is...
US20120139429 DISPLAY DEVICE  
Provided is a display device in which design properties have been improved by eliminating the flickering when the display level changes. A microcomputer (5) causes light emission of first LEDs (23...
US20130187556 Long Decay Phosphors for Lighting Applications  
A photoluminescent material has the characteristic of a long photoluminescence decay and has the general composition Ca3-x-m-nAxSc2-yMySi3-zEzO12:mCe3+,nMn2+, where A is at least one divalent...
US20150216006 MULTI-STAGE LED LIGHTING SYSTEMS  
Multi-stage LED drivers and lighting systems are disclosed. The lighting system comprises a bridge rectifier receiving power from an AC power line source, two or more current limiting devices, and...
US20140327860 LED BACKLIGHT SOURCE AND LIQUID CRYSTAL DISPLAY DEVICE  
The invention provides LED backlight source, including: a boost converter, for boosting input voltage and outputting boosted voltage; N parallel LED strings, wherein each LED string including a...
US20120081016 LED DRIVER WITH ADAPTIVE DYNAMIC HEADROOM VOLTAGE CONTROL  
A multi-channel LED driver includes a plurality of linear current regulators, each connected to a bottom of a string of series connected LEDs of a multi-channel LED that controls a bias current...
US20140292214 Interconnectable LED Module for Use in a Direct Current Circuit  
A system and method for interconnecting LED modules that receive electrical energy from a direct current electrical energy power supply includes a first type of mating connector to provide an...
US20120229038 MILLISECOND DECAY PHOSPHORS FOR AC LED LIGHTING APPLICATIONS  
Cehlorosilicate-based phosphors configured to emit yellow-green light in a wavelength ranging from about 500 nm to about 560 nm in response to an excitation source emitting at about 400 nm to...
US20110210679 Device and method for activating LED strings  
A device for activating at least two LED strings includes a source of electrical power, a switching controller and at least two LED strings having one or more LED(s). The switching controller in...
US20120019156 LED STRING DRIVER WITH NON-DISSIPATIVE REACTANCE BALANCER  
A solid state lighting arrangement constituted of: a power source providing a current which is discontinuous in at least one direction; a plurality of light emitting diode (LED) strings arranged...
US20140333218 LED LIGHT STRING WITH OPEN CIRCUIT PROTECTION  
An LED light string with open circuit protection has a first end for receiving a first voltage, a second end for receiving a second voltage, and multiple LED units connected in series between the...
US20140333219 LED LIGHTING UNIT WITH COLOR AND DIMMING CONTROL  
Method and apparatus for a LED lighting unit (200), including an inverter circuit (210) electrically coupled to a LED module (220) having a pair of antiparallel LED groupings. The inverter circuit...
US20150173142 SELF-ADJUSTING LIGHTING DRIVER FOR DRIVING LIGHTING SOURCES AND LIGHTING UNIT INCLUDING SELF-ADJUSTING LIGHTING DRIVER  
A lighting unit (100) includes light emitting diode (LED) modules (120, 300) and a lighting driver (110, 200) connected to the LED modules. Each LED module includes LEDs (323) and an...
US20140300278 SELF-ADJUSTING LIGHTING DRIVER FOR DRIVING LIGHTING SOURCES AND LIGHTING UNIT INCLUDING SELF-ADJUSTING LIGHTING DRIVER  
A lighting unit (100) includes light emitting diode (LED) modules (120, 300) and a lighting driver (110, 200) connected to the LED modules. Each LED module includes LEDs (323) and an...
US20120153848 REFERENCE VOLTAGE GENERATING CIRCUIT AND LED DRIVER CIRCUIT HAVING THE SAME THEREIN  
A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit and a light-emitting diode (LED) driver circuit are provided. A reference voltage generating circuit...
US20140292215 LED Lamp with Remote Control  
Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a...
US20140152185 LIMITED FLICKER LIGHT EMITTING DIODE STRING  
A limited flicker decorative light-emitting diode (LED) string includes a power plug adapted to connect to an alternating current (AC) power source and supply AC power to the LED string, a first...

Matches 1 - 50 out of 322 1 2 3 4 5 6 7 >