| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315052000 | Plural impedance elements | 40 |
| 20100237780 | Light emitting device, light emitting system comprising the same, and method of fabricating thereof - A light emitting device that provides white light of various color temperatures by using a double-sided light emitting element, a light emitting system comprising the same, and a method of fabricating thereof are provided. The light emitting device includes a double-sided light emitting element including a first light emitting element on one side of a substrate and emits light having a first wavelength and a second light emitting element on the other side of the substrate and emits light having a second wavelength, wherein the first wavelength and the second wavelength are different each other, a first variable resistor coupled to the first light emitting element and adjusting a first driving power applied to the first light emitting element, and a second variable resistor coupled to the second light emitting element and adjusting a second driving power applied to the second light emitting element. | 09-23-2010 |
| 20100259171 | IMAGE DISPLAY APPARATUS - An image display apparatus according to the present invention comprises a plurality of electron emitting devices having an electron emitting portion provided between a cathode electrode and a gate electrode; a cathode wiring connected to the cathode electrode; and a gate wiring connected to the gate electrode and having a resistance higher than the resistance of the cathode wiring, wherein an impedance element having a resistance value of Ry and an electrostatic capacitance of Cy is connected to between the cathode wiring and the cathode electrode, a resistive element having a resistance value of Rx is connected to between the gate wiring and the gate electrode, and |Ry/(1+jωRyCy)|Rx are satisfied, where ω is 100 MHz. | 10-14-2010 |
| 20120098428 | MESSAGE CONTROLLABLE LAMP - A lamp is provided that is controlled by messages transmitted via a network. The lamp has an internal memory that stores an address and an internal control circuit that responds to received messages that refer to this address. The address is updated when the lamp is installation in a power supply socket, using for example an address from the first message that is transmitted after installation. The lamp contains a detector that detects disconnection of the lamp from the power supply socket, for example by monitoring a resistance value between two parts of one of the power supply terminals of the lamp. In response to this detection the control circuit of the lamp sets information that enables an update of the address in the memory. When it is detected that the lamp is again connected to a power supply socket the address is updated on condition that the update is enabled. | 04-26-2012 |
| 20120206042 | LED DEVICE WITH VOLTAGE-LIMITING UNIT AND VOLTAGE-EQUALIZING AND CURRENT-LIMITING RESISTANCES - The present invention provides a LED device with voltage-limiting unit and voltage-equalizing and current-limiting resistances, in which a LED is connected in parallel with a voltage-limiting unit, and a current-limiting resistance is connected in series between the LED and the voltage-limiting unit, and two ends of each LED are connected in parallel with an voltage-equalizing resistance for forming a light-emitting unit, so that a light-emitting unit set can be structured through connecting two or more than two of the mentioned light-emitting units in series or in series-parallel in the same polarity; with the two ends of each LED being connected in parallel with the voltage-equalizing resistance, the end voltage of each light-emitting unit can be evenly stabilized; and the current-limiting resistance is connected in series between the connection joints of the LED and the voltage-limiting unit for limiting the shunt current passing through the voltage-limiting unit. | 08-16-2012 |
| 20130099666 | SELECTIVELY CONTROLLING THE RESISTANCE OF RESISTIVE TRACES PRINTED ON A SUBSTRATE TO SUPPLY EQUAL CURRENT TO AN ARRAY OF LIGHT SOURCES - A light emitting display includes a plurality of light emitting diodes (LEDs) or other type of light sources mounted in a parallel-connected array that is supplied electrical current from a power bus. A voltage drop occurs along the power bus, where each successive LED is connected. To achieve either substantially equal current flow (or different desired levels of current flow) through the LEDs, a conductance of resistive traces that connect the LEDs to the power bus is selectively controlled. The resistive traces are formed by printing a resistive ink on the substrate. The conductivity of the ink used to form the resistive traces, their length, and/or the width or other cross-sectional size of the resistive traces may be selectively controlled to achieve the desired electrical current supplied to each light source, so that a uniform or desired light intensity is emitted by the LEDs. | 04-25-2013 |
| 20130127338 | Drive Circuit Structure for LED Lamp Tube - A drive circuit structure for LED lamp tube is disclosed, wherein the LED lamp tube comprises a lampshade, at least an LED lamp strap and at least a drive circuit structure. The LED lamp strap is disposed inside the lampshade, and drive circuit structure connected with the LED lamp strap is disposed on any side within the lampshade. Moreover, the drive circuit structure includes multiple general-sized electronic components, at least a large-sized electronic component and a drive circuit board, wherein such general-sized electronic components are inserted on a plane of the drive circuit board, and the large-sized electronic component is disposed upright on any side of the drive circuit board. Accordingly, though the large-sized electronic component becomes voluminous, by disposing it upright on one side of the drive circuit board, it is possible to prevent the drive circuit structure from occupying larger accommodation space due to the large-sized electronic component. | 05-23-2013 |
| 20130147350 | Light Emitting Apparatus - A light emitting apparatus receives an external power. A switching unit is electrically connected with a light emitting unit to form a serial circuit. A first electrical connection element is electrically connected with the external power and the light emitting unit. A second electrical connection element is electrically connected with the external power and the switching unit. A sensing unit is electrically connected with the first electrical connection element, the second electrical connection element and the switching unit. When filament currents flow between two electrical input terminals of the first electrical connection element and between two electrical input terminals of the second electrical connection element, the sensing unit controls the switching unit to turn on to enable the light emitting unit to receive the external power and start to emit light. Thus, users can avoid the risk of electric shock when installing the light emitting apparatus. | 06-13-2013 |
| 20130200790 | ARRAYS OF LIGHT SOURCES ENERGIZED WITH BRANCHED AND LOOPED ELECTRODES FOR SIGNAGE - An array of light sources, e.g. LEDs, can be energized with electrical current provided through power bus electrodes. The array, which can be branched or looped, can coupled to a power source at two or more substrate feedthroughs. One or more alphanumeric characters and/or as line art can be defined by the layout of the light sources and electrodes. The light intensity emitted by each light source is determined by creating a tuned electrode—resistor—light source network. Each light source is coupled to the electrodes via one or more resistors, which are trimmed when formed, e.g., based a plurality of vectors defining the network, or by manually determining the voltage at each node of each electrode. This circuit design technique can be used to create signs comprising plural letters, or discrete characters that can be assembled by end users. | 08-08-2013 |
| 20130293103 | High Efficiency 3-Way Halogen Lamp With Single Filament Microprocessor Driven Light Sources - A 3-way halogen lamp selectively generates a first light level, second light level, and third light level based on whether a first terminal on the lamp base and a second terminal on the lamp base are connected to a power supply. A controller housed entirely within the based detects whether the first and second terminals are connected to the power supply, and generates a control signal as a function thereof. A switching circuit housed entirely within the base is operated by the control signal to provide a voltage load signal having a particular RMS voltage. A single filament halogen capsule is attached to the base and connected to the switching circuit for receiving the voltage load signal and generating the first light level, second light level, and third light level when the voltage signal has a first RMS voltage, a second RMS voltage, and a third RMS voltage, respectively. | 11-07-2013 |
| 20130334960 | ELECTROLUMINESCENT DEVICE - The present invention relates to an electroluminescent device (100) comprising a pair of electroluminescent stacks (101,102), each stack comprising a first electrode layer (103,104), a second electrode layer (105,106) and an electroluminescent layer (107,108) being located between the first and second electrode layers (103-105,104-106), an electrical connection (115,116) between the two stacks (101,102),each of the second electrode layers comprising a conductive plate, the two conductive plates forming a pair of receiver electrodes for capacitive power transfer. | 12-19-2013 |
| 20140062301 | ORGANIC LIGHT EMITTING DEVICE AND POWER SUPPLY DEVICE THEREOF - An organic light emitting device including a first substrate, at least an organic light emitting unit, a plurality of first electrode contacts and a plurality of second electrode contacts. The organic light emitting unit is disposed on the first substrate. The first electrode contacts are disposed on the first substrate at a margin of the organic light emitting unit, wherein adjacent two first electrode contacts are spaced by a first interval, and an end of each first electrode contact is electrically connected to the organic light emitting unit. The second electrode contacts are disposed on the first substrate at a margin of the organic light emitting unit, wherein adjacent two second electrodes are spaced by a second interval, an end of each second electrode contact is electrically connected to the organic light emitting unit, and the second interval is different from the first interval. | 03-06-2014 |
| 20140145604 | INDUCTION RF FLUORESCENT LAMP - An induction RF fluorescent lamp that is able to replace an ordinary reflector-type incandescent lamp, both in its ability to screw into a standard incandescent lamp socket and to have the general look of the ordinary reflector incandescent lamp, but with all of the advantages of an induction lamp, as described herein. | 05-29-2014 |
| 20140252947 | ILLUMINANT DEVICE WITH OVER-TEMPERATURE PROTECTING FUNCTION - An illuminant device with over-temperature protection is electrically connected to a power source and includes a housing, a illuminant element, a resistor, and an over-temperature protective element. The housing includes an upper portion, a lower portion opposite to the upper portion, and two accommodating spaces communicating with the upper end and the lower end respectively. The illuminant element is placed on the upper portion. The resistor is located within one of the accommodating space and electrically connected to the illuminant element. The over-temperature protective element is located within the other accommodating space and electrically connected to the illuminant element. The over-temperature protective element senses temperatures of the illuminant element and selectively breaks the power source, such that the illuminant element is switched between conductive and non-conductive. | 09-11-2014 |
| 20150318672 | SPARK PLUG - A spark plug includes an insulator with an axial through hole, a center electrode disposed in a front side of the through hole and a metal terminal disposed in a rear side of the through hole. The spark plug further includes a front conductive glass seal layer, a first resistor, a rear conductive glass seal layer, a seal contact member, a second resistor and a conductive elastic material arranged, in this order from the front to the rear, between the center electrode and the metal terminal within the through hole. The first resistor is formed containing at least a conductive material and a glass material. The second resistor is formed as a wire wound resistor having 30 or more turns of wire. | 11-05-2015 |
| 20160174308 | LED REPLACEMENT LAMP FOR SAFE OPERATION UNDER FAULT CONDITION | 06-16-2016 |
| 315053000 | Diverse types of impedances | 24 |
| 20090315462 | Metal Halide Lamp - A metal halide lamp capable of delaying the rate of deformation in an electrostrictive phenomenon caused by the discharge of a ferroelectric ceramic capacitor when dielectric breakdown is initiated between the electrodes of an arc tube thereby preventing breakage accident, wherein a starting circuit, housed in parallel connection together with an arc tube in an outer tube of a metal halide lamp has in serial connection, a ferroelectric ceramic capacitor that is charged and discharged when a voltage at a predetermined coercive voltage or higher is applied thereby outputting a starting pulse at a high voltage from a ballast, a semiconductor switch that turns to a conduction state when a voltage of a predetermined breakover voltage or higher is applied, and a time constant control resistor that delays the discharge time of electric charges discharged from the capacitor when dielectric breakdown is initiated in the arc tube. | 12-24-2009 |
| 20110084607 | Integrated driver system architecture for light emitting diodes (LEDS) - A method includes forming one or more capacitors over a substrate. The method also includes forming a transformer at least partially over the substrate. The transformer is adjacent to at least one of the one or more capacitors. At least a portion of the transformer is formed at a same level over the substrate as the one or more capacitors. The method further includes coupling the one or more capacitors and the transformer to at least one embedded integrated circuit die. The one or more capacitors, the transformer, and the at least one embedded integrated circuit die form at least part of a light emitting diode (LED) driver. | 04-14-2011 |
| 20110221344 | Compact fluorescent lamp operable in different power sources - One embodiment of a compact fluorescent lamp includes a circuit assembly comprising a rectifier, a plurality of capacitors, a plurality of ICs, a plurality of inductors, a transformer for converting AC to DC, a plurality of diodes, and a PCB; a CFL electrically connected to the circuit assembly; a shade for enclosing the CFL; and a housing for mounting the circuit assembly therein. The circuit assembly is operable when voltage variation is between 2.5 and 21 V. Further, the lamp can operate in one of three different power sources (e.g., DC power supply, electronic transformer, and electrical transformer). | 09-15-2011 |
| 20110234096 | Integrated Gas Discharge Lamp with an Ignition Electronics Integrated Into the Base for Generating Asymmetrical Ignition Pulses - An integrated gas discharge lamp ( | 09-29-2011 |
| 20110234097 | OLED WITH INTEGRATED DELAY STRUCTURE - An organic light-emitting diode ( | 09-29-2011 |
| 20110298375 | Power Factor Control For An LED Bulb Driver Circuit - A light-emitting diode (LED) bulb has a shell and a base attached to the shell. An LED is within the shell. A driver circuit provides current to the LED. The driver circuit has a power factor control circuit that includes a tracking circuit configured to produce a tracking signal indicative of the voltage of the supply line. The power factor control circuit also includes a switch-mode power supply (SMPS) controller having an input pin and an output pin. The tracking circuit is connected to the input pin. Based on the signal at the input pin, the SMPS controller is configured to change a duty cycle of an output signal on the output pin. | 12-08-2011 |
| 20120306367 | IMPEDANCE MATCHING APPARATUS - Provided is an impedance matching apparatus for matching impedance to a plasma load. The impedance matching apparatus includes a first frequency impedance matching circuit unit that transfers an output of a first frequency RF power source unit, operating at a first frequency, to the plasma load; and a second frequency impedance matching circuit unit that transfers an output of a second frequency RF power source unit, operating at a second frequency higher than the first frequency, to the plasma load. The first frequency impedance matching circuit unit includes a T-type matching circuit, and the second frequency impedance matching circuit unit includes a standard L-type matching circuit or Π-type matching circuit. | 12-06-2012 |
| 20120313520 | POWER FACTOR CONTROL FOR AN LED BULB DRIVER CIRCUIT - A light-emitting diode (LED) bulb has a shell and a base attached to the shell. An LED is within the shell. A driver circuit provides current to the LED. The driver circuit has a power factor control circuit that includes a tracking circuit configured to produce a tracking signal indicative of the voltage of the supply line. The power factor control circuit also includes a switch-mode power supply (SMPS) controller having an input pin and an output pin. The tracking circuit is connected to the input pin. Based on the signal at the input pin, the SMPS controller is configured to change a duty cycle of an output signal on the output pin. | 12-13-2012 |
| 20130234592 | Circuit for Retro-Lighting a Display - There is described a circuit for retro-lighting a display, comprising a group of white light-emitting diodes connected in series between a first node and a second node and a circuit for driving said group of series-coupled light-emitting diodes comprising: a power supply providing a positive voltage supplied to the first node; and a charge pump converter providing a negative voltage obtained from the positive voltage, said negative voltage being supplied to the second node. | 09-12-2013 |
| 20130271000 | POWER FACTOR CONTROL FOR AN LED BULB DRIVER CIRCUIT - A light-emitting diode (LED) bulb has a shell and a base attached to the shell. An LED is within the shell. A driver circuit provides current to the LED. The driver circuit has a power factor control circuit that includes a tracking circuit configured to produce a tracking signal indicative of the voltage of the supply line. The power factor control circuit also includes a switch-mode power supply (SMPS) controller having an input pin and an output pin. The tracking circuit is connected to the input pin. Based on the signal at the input pin, the SMPS controller is configured to change a frequency of an output signal on the output pin. | 10-17-2013 |
| 20130271001 | LIGHT-EMITTING DIODE DRIVER CIRCUIT AND LED LIGHT SOURCE - A light-emitting diode driver circuit and an LED light source which are capable of reliably turning OFF an LED even when an input voltage having a value smaller than a predetermined value is supplied. A light-emitting diode driver circuit for turning ON an LED includes: an inverter which outputs electric power for driving the LED; and an inverter control circuit which controls an operation of the inverter, and when a DC voltage applied to the inverter control circuit has a value smaller than the predetermined value, the inverter control circuit stops the operation of the inverter. | 10-17-2013 |
| 20130285547 | LED Lamp Replacement of Low Power Incandescent Lamp - An LED lamp that can take the place of incandescent lamps. An elevated light source is positioned above a screw-type base. A first plurality of LEDs is connected in a series on one side of a flat substrate and a second plurality of LEDs, equal in number to the first, is connected in series on an opposite side of the substrate. Each LED of the first and second plurality of LEDs is mounted proximate a heat sink and a drive circuit is provided for the LEDs, with the drive circuit being located proximate and electrically connected to the screw base. | 10-31-2013 |
| 20130320848 | LIGHT-EMITTING DEVICE - A light-emitting device that is less influenced by variations in threshold voltage of a transistor is provided. Further, a light-emitting device in which variations in luminance due to variations in threshold voltage of a transistor can be reduced is provided. Further, influences due to variations in threshold voltage of a transistor are corrected in a short time. A light-emitting element, a transistor functioning as a switch supplying current to the light-emitting element, and a circuit in which threshold voltage of the transistor is obtained and voltage between a gate and a source (gate voltage) of the transistor is corrected in accordance with the obtained threshold voltage are included. An n-channel transistor in which threshold voltage changes in a positive direction and the amount of the change is small is used. When the threshold voltage of the transistor is obtained, the gate voltage of the transistor is adjusted as appropriate. | 12-05-2013 |
| 20140009064 | LIGHT-EMITTING DIODE FIXTURE WITH AN IMPROVED THERMAL CONTROL SYSTEM - A light-emitting diode fixture comprises spaced-apart first and second housing portions. There is a cooling device disposed within the first housing portion. The cooling device is in fluid communication with the second housing portion. First and second printed circuit boards are disposed within the second housing portion. A light-emitting diode and a negative coefficient thermistor array are mounted on the first printed circuit board. The light-emitting diode and the negative coefficient thermistor array are each thermally coupled to a heat sink. A rectifier is mounted on the second printed circuit board. The rectifier is electrically connected in series with the negative coefficient thermistor array and the cooling device. Current used to power the cooling device flows from the rectifier through the negative coefficient thermistor array to the cooling device. | 01-09-2014 |
| 20140139106 | LIGHT-EMITTING ELEMENT AND DISPLAY DEVICE - A light-emitting element includes an emitting unit and a driving circuit configured to drive the emitting unit. The driving circuit includes a driving transistor, an image signal writing transistor, and a capacitor unit. The driving circuit is connected to a current supply line and a scanning line both extending in a first direction and connected to a data line extending in a second direction. The current supply line and the scanning line are formed on the first interlayer insulating layer and the first interlayer insulating layer, the current supply line, and the scanning line are covered with a second interlayer insulating layer. The data line is formed on the second interlayer insulating layer. A shield wall extending in the first direction is provided to the second interlayer insulating layer between one light-emitting element and a light-emitting element adjacent to the one light-emitting element in the second direction. | 05-22-2014 |
| 20140145605 | HIGH FREQUENCY INDUCTION RF FLUORESCENT LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - A high frequency induction RF fluorescent lamp comprising an electronic ballast operating at greater than 5 MHz and a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler. | 05-29-2014 |
| 20140145606 | HIGH FREQUENCY INDUCTION RF FLUORESCENT LAMP - A high frequency induction RF fluorescent lamp that is able to replace an ordinary incandescent lamp, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent lamp, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes a high frequency electronic ballast, as well as structures for an induction RF fluorescent lamp that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look for the high frequency induction RF fluorescent lamp that is similar to the profile of an ordinary incandescent lamp. | 05-29-2014 |
| 20140145607 | DIMMABLE HIGH FREQUENCY INDUCTION RF FLUORESCENT LAMP - A dimmable high frequency induction RF fluorescent lamp, comprising a bulbous vitreous portion filled with a working gas mixture, a power coupler comprising at least one winding of an electrical conductor for receiving an alternating voltage, and an electronic ballast providing appropriate voltage and current to the power coupler and operating at a frequency greater than 5 MHz, wherein the electronic ballast comprises a dimming facility for dimming the lamp from an external dimming device. | 05-29-2014 |
| 20140145608 | FAST START HIGH FREQUENCY INDUCTION RF FLUORESCENT LAMP - A fast starting induction RF fluorescent lamp comprising an electronic ballast operating at greater than 5 MHz, and a lamp envelope with structures that facilitate rapid luminous development during a turn-on phase. | 05-29-2014 |
| 20140191659 | LED LAMP CONTROL CIRCUIT - An LED lamp control circuit comprises a rectifier circuit, an LED light source load, a constant current circuit, and a first temperature detect switch circuit. The LED light source load comprises at least one group of LEDs. The constant current circuit comprises at least one group of constant current source components, each of which is connected to at least one group of LEDs in the LED light source load and comprises a depletion mode field effect transistor. The first temperature detect switch circuit is connected to an input end of a power source, and comprises a first normally closed temperature detect switch mounted on a radiator. When the temperature of the radiator exceeds the disconnection temperature of the first normally closed temperature detect switch, the first normally closed temperature detect switch is disconnected, so as to cut off the power supply of the LED light source load. | 07-10-2014 |
| 20140246973 | ADAPTABLE LIGHT UNIT - A system and device for an adaptable, energy-efficient light unit is herein provided, wherein the system and device allows for a longer life span of the light emitting device within the light unit, and for replacing a light emitting device within a light unit that does not require any tool or complex process. The system includes at least one light emitting unit, a light panel system frame, wherein the frame includes a power track, fixtures, and conductors, a lens, and may include a hanger. The device is a light emitting unit that includes at least a circuit board, wherein the circuit board may include ventilation holes and is made of heat conductive materials, at least one light emitting source, a voltage converter, power fixtures, wherein the power fixtures are configured to retrofit conventional light fixtures. The circuit board is configured to provide consistent voltage to the light emitting device. | 09-04-2014 |
| 20140265835 | THREE-WAY LED BULB DRIVER - An LED bulb is described. The LED bulb comprises a shell, a plurality of LEDs within the shell, a driver circuit connected to the plurality of LEDs, and a base connected to the shell. The driver circuit comprises a first input to receive AC voltage, a second input to receive AC voltage, a neutral input, a power supply circuit connected to the plurality of LEDs, and a brightness control circuit. The brightness control circuit is connected to the first input, the second input, and the power supply circuit. The brightness control circuit is configured to output a modified AC voltage to the power supply circuit. The modified AC voltage is created by blocking a portion of a cycle of AC received by the first or second input. The blocked portion is based on whether the first input, the second input, or the first and second inputs are both hot. | 09-18-2014 |
| 20140361685 | VEHICULAR HEADLAMP - An object of the present disclosure is to reduce a failure rate due to a prolonged life span of a cooling fan while maintaining a satisfactory heat dissipating performance When a signal indicating a first light-up state is input, a control unit sets a current value of an output current to a predetermined value such that a cooling fan is rotated at a predetermined rotation speed, and when a signal indicating a second light-up state is input, the control unit lowers the current value of the output current to a value lower than the predetermined value such that the rotation speed of the cooling fan is lower than the predetermined rotation speed. Therefore, the life span of the cooling fan may be prolonged while maintaining the satisfactory heat dissipating performance. | 12-11-2014 |
| 20150097482 | SEGMENTED ELECTROLUMINESCENT DEVICE WITH DISTRIBUTED LOAD ELEMENTS - The invention relates to an electroluminescent lighting device, which is based on an array of standard electroluminescent tiles (D | 04-09-2015 |
| 315054000 | Plural inductive impedances | 1 |
| 20120001545 | LED-BASED LIGHT BULB DEVICE - An LED light bulb device including a bulb body, a cap and an LED assembly. The bulb body defines an exterior surface and an interior. The cap is mounted to the bulb body, combining to define a light bulb-like structure. The LED assembly includes a substrate, LEDs, transformer circuitry and connective circuitry. The LEDs and the connective circuitry are maintained by the substrate, with the connective circuitry electrically connecting the LEDs and the transformer circuitry. The transformer circuitry is adapted to modify incoming power for powering the LEDs. The LED assembly is mounted to the light bulb-like structure such that the LEDs are disposed along the exterior surface of the bulb body, with light from the LEDs being directed inwardly into the interior and then outwardly from the interior. The LED assembly can further include a heat sink body encompassing the LEDs. | 01-05-2012 |
