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| Number | Title | Issue Date |
| 8344643 | Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps. According to an embodiment, the present invention provides a system for driving a plurality of cold-cathode fluorescent lamps. The system includes a sub... | 01/01/2013 |
| 8164270 | Discharge lamp lighting circuit A discharge lamp lighting circuit is capable of preventing the discharge lamp from going out unexpectedly. The discharge lamp lighting circuit includes a DC-AC inverter which receives a power source voltage, boosts and converts the power source voltage into AC and s... | 04/24/2012 |
| 8120271 | Multi-lamp driving circuit A multi-lamp driving circuit for driving a plurality of lamp groups includes an inversion circuit configured to drive the plurality of lamp groups and a current balance circuit electrically connected between the inversion circuit and the plurality of lamp groups. Th... | 02/21/2012 |
| 8072156 | Discharge lamp operating system A discharge lamp operating system has first and second discharge lamp operating circuits. The first discharge lamp operating circuit includes first and second primary windings, a first secondary winding, a first discharge lamp connected to the first primary winding,... | 12/06/2011 |
| 8008867 | Arrangement suitable for driving floating CCFL based backlight A backlighting arrangement constituted of: a means for receiving an alternating current comprising a first lead and a second lead; at least one luminaire; and at least one first balancing transformer pair each associated with a particular one of the at least one lum... | 08/30/2011 |
| 7973491 | Multi-lamp backlight apparatus A multi-lamp backlight apparatus is disclosed. The multi-lamp backlight apparatus includes 2N lamps, N balancing transformers, and a high-voltage power source. N is a positive integer and k is an integer index ranging from 1 to N. The kth balancing transformer among... | 07/05/2011 |
| 7944152 | Two-stage balancer for multi-lamp backlight A two-stage balancer for a multi-lamp backlight is electrically connected to a driving unit through a driving transformer. The two-stage balancer includes a plurality of first balancing transformers, second balancing transformers, and lighting units. Each of the fir... | 05/17/2011 |
| 7919930 | Coil component and display device using same The coil component comprises a primary coil, and a first secondary coil and a second secondary coil which are opposed to the primary coil. A first terminal is a terminal of the first secondary coil, that is a terminal for connection to one end of a lamp, and a secon... | 04/05/2011 |
| 7876055 | Lamp-lighting apparatus An economical device for lighting lamps such as discharge tubes. The lamp-lighting apparatus has an inverter transformer, a switching circuit connected with the primary winding of the inverter transformer and acting to perform switching for converting a voltage from... | 01/25/2011 |
| 7834559 | Lamp circuit of liquid crystal device backlight source Disclosed is an improved lamp circuit of a liquid crystal device (LCD) backlight source, comprising a printed circuit board (PCB) for lamp initialization having a control circuit and a first connector thereon; a first lamp connection board disposed between the first... | 11/16/2010 |
| 7825608 | Multi-discharge tube lighting apparatus A multi-discharge tube lighting apparatus connectable to a power source comprising a first output terminal and a second output terminal respectively outputting voltages of opposite phases, the lighting apparatus comprises first to n-th discharge tube units where n r... | 11/02/2010 |
| 7808188 | Driving circuit for lamp A driving circuit for driving at least one lamp includes a power switching circuit, a first transformer and a feedback control circuit. The power switching circuit is electrically connected with a power source to generate an input current. The first transformer incl... | 10/05/2010 |
| 7791286 | Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display A driving apparatus and a driving method are disclosed that are capable of uniformly lighting each entire fluorescent tube irrespective of the length or number of fluorescent tubes when simultaneously driving a plurality of fluorescent tubes in a fluorescent tube li... | 09/07/2010 |
| 7786681 | Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display A driving apparatus and a driving method are disclosed that are capable of uniformly lighting each entire fluorescent tube irrespective of the length or number of fluorescent tubes when simultaneously driving a plurality of fluorescent tubes in a fluorescent tube li... | 08/31/2010 |
| 7759877 | Driving system for electronic device and current balancing circuit thereof A driving system, includes: a power supply unit for providing a first current and a second current; a first transformer having a primary side coupled to the power supply unit and a secondary side coupled to a first current balancing circuit for driving a plurality o... | 07/20/2010 |
| 7750581 | Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps. According to an embodiment, the present invention provides a system for driving a plurality of cold-cathode fluorescent lamps. The system includes a sub... | 07/06/2010 |
| 7675243 | Two-end driven lamp controlling device A two-end driven lamp controlling device includes a direct-current (DC) power supply, square wave switches, a square wave controller, a plurality of lamps, a plurality of starting transformers and a plurality of lamps commonly connective transformers, wherein the pl... | 03/09/2010 |
| 7589478 | Inverter circuit for discharge lamps for multi-lamp lighting and surface light source system An inverter circuit for discharge lamps for multi-lamp lighting in which the value of a negative resistance characteristic of a fluorescent lamp is controlled, and an excessively set reactance is eliminated by causing a shunt transformer to have a reactance exceedin... | 09/15/2009 |
| 7573205 | Lamp-lighting apparatus An economical device for lighting lamps such as discharge tubes. The lamp-lighting apparatus has an inverter transformer, a switching circuit connected with the primary winding of the inverter transformer and acting to perform switching for converting a voltage from... | 08/11/2009 |
| 7560875 | Balancing transformers for multi-lamp operation A ring balancer comprising a plurality of balancing transformers facilitates current sharing in a multi-lamp backlight system. The balancing transformers have respective primary windings separately coupled in series with designated lamps and have respective secondar... | 07/14/2009 |
| 7531968 | Inverter circuit, backlight and liquid crystal display An inverter circuit includes an inverter transformer to supply AC high voltages of opposite phases, and a plurality of balance transformers. The inverter transformer supplies AC high voltages of same phases to every n number of CCFLs, and the CCFLs are connected in ... | 05/12/2009 |
| 7525257 | Device for driving light sources A driving device for driving a light source module (32) includes a first power stage circuit (30) and a first transformer circuit (31). The first transformer circuit is connected to the first power stage circuit, including a first transformer (T... | 04/28/2009 |
| 7492107 | Device for driving light source module A driving device for driving a light source module (47) includes a PFC circuit (42), a power stage circuit (44), an isolation transformer (T1), an inverter circuit (45) and a PWM controller (46). The PFC circuit converts a r... | 02/17/2009 |
| 7479739 | Inverter circuit, backlight assembly and liquid crystal display with the same An inverter circuit, a backlight assembly and a liquid crystal display include first and second electrodes and a balance circuit. The first and second electrodes supply a voltage of opposite polarities, respectively, among an even number of cold cathode fluorescent ... | 01/20/2009 |
| 7446485 | Multi-lamp driving system A multi-lamp driving system for driving a first lamp and a second lamp includes a power supply circuit, and first-stage transformers. The power supply circuit is used for supplying the first and second lamps with an AC power, and first-stage transformers coupled to ... | 11/04/2008 |
| 7443112 | Current balancing circuit for a multi-lamp system The present invention uses one or more transformers disposed between an inverter driver to drive a plurality of lamps. Each transformer has a first coil and a second coil magnetically coupled to each other. Each of the first and second coils has an input end and an ... | 10/28/2008 |
| 7443108 | Apparatus for driving a plurality of lamps A power system for driving a plurality of lamps includes a transformer circuit, a current balancing circuit, and a light source. The transformer circuit includes a plurality of transformers in a quantity denoted by N, and each of the transformers has a first, a seco... | 10/28/2008 |
| 7439684 | Inductive lamp assembly An inductive power supply system for providing power to one or more inductively powered devices. The system includes a mechanism for varying the physical distance or the respective orientation between the primary coil and secondary coil to control the amount of powe... | 10/21/2008 |
| 7439685 | Current balancing technique with magnetic integration for fluorescent lamps Methods and apparatus are disclosed for balancing currents passing through multiple parallel circuit branches and in some cases through parallel fluorescent lamps. Single transformers with multiple-leg magnetic cores are wound in specific manners that simplify curre... | 10/21/2008 |
| 7439686 | Discharge-lamp lighting apparatus A discharge-lamp lighting apparatus includes first and second cold cathode fluorescent lamps (CCFLs) and first and second transformers. The first transformer has a primary winding and a secondary winding. The primary winding receives an AC voltage generated by turni... | 10/21/2008 |
| 7432669 | Backlight unit and method for driving the same A backlight unit includes a plurality of fluorescent lamps driven by one inverter in a manner to prevent wave noise. A first common electrode line connects respective first ends of the odd numbered fluorescent lamps in common. A second common electrode line connects... | 10/07/2008 |
| 7411357 | Liquid crystal and device of driving light source therefor A device of driving a plurality of lamps is provided, which includes: a transforming unit supplying driving voltages having inverted phases to adjacent lamps; and an inverter controlling the transforming unit. ... | 08/12/2008 |
| 7411358 | Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly In an inverter circuit for a backlight assembly, a first sinusoidal voltage and a second sinusoidal voltage having an opposite polarity to that of the first sinusoidal voltage are applied across terminals of 2n CCFLs. Each of respective primary coils of n first bala... | 08/12/2008 |
| 7408306 | Lamp lighting circuit and device, and lamp lighting apparatus and device The present invention relates to a lamp lighting technique for lighting multiple lamps safely without luminance irregularities. The present lamp lighting circuit includes multiple closed loops wherein a predetermined number of lamps and the secondary windings of the... | 08/05/2008 |
| 7402957 | Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly In an inverter circuit, inverter transformers supply AC voltage to discharge tubes. The inverter transformers are arranged such that the AC voltage at a respective first terminal of each secondary coil has an opposite polarity with respect to a corresponding second ... | 07/22/2008 |
| 7394213 | Multi-lamp driver A multi-lamp driver t disclosed, comprising a power driver coupled to a plurality of lamps to supply power thereto, a feedback circuit coupled to at least one of the lamps to generate a feedback signal, a control circuit coupled between the feedback circuit and the ... | 07/01/2008 |
| 7391166 | Parallel lighting system for surface light source discharge lamps Disclosed is a low-cost parallel lighting system for discharge lamps for a surface light source, which reduces nonuniform brightness and static noise, and fulfills a requirement that lamp currents of individual cold-cathode fluorescent lamps should be uniform and st... | 06/24/2008 |
| 7372213 | Lamp current balancing topologies A method according to on embodiment may include generating AC voltage and current and a striking voltage. The method of this embodiment may also include generating striking voltage and steady-state voltage for at least two lamp loads. The method of this embodiment m... | 05/13/2008 |
| 7372211 | Cold cathode tube lighting device and driving method and integrated circuit to be used in same A cold cathode tube lighting device is provided which is capable of obtaining stable luminance when a cold cathode tube is driven by applying voltages to input terminals on both ends of the cold cathode tube. A first current flowing through each of transformer secon... | 05/13/2008 |
| 7358684 | Balanced circuit for multi-LED driver A driving circuit uses a plurality of transformers to provide currents for driving a plurality of LEDs associated with a plurality of current paths. Each transformer has two induction coils with a coil turn ratio between to the number of turns in each induction coil... | 04/15/2008 |
