ClassID:

233261

H05B41/2822 - CPC Classification

Classification description:

Circuit arrangements or apparatus for igniting or operating discharge lamps; Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezo-electric transformers; using specially adapted load circuit configurations

Recent Application in this class:
#1
20160286635
2016-09-29

Enhanced variable control, current sensing drivers with zeta scan

#2
20150365004
2015-12-17

AC-DC power converter

#3
20150145429
2015-05-28

Electronic ballast circuit for lamps

#4
20140292229
2014-10-02

Electromagnetic coupling multi-output control circuit

#5
20140252978
2014-09-11

Electronic ballast circuit for lamps

#6
20140159605
2014-06-12

AC-DC power converter

#7
20120242267
2012-09-27

Device for controlling a plurality of electrical consumers

#8
20120217893
2012-08-30

INVERTER DEVICE, ILLUMINATION DEVICE FOR DISPLAY DEVICE PROVIDED WITH THE SAME, AND DISPLAY DEVICE

#9
20120139433
2012-06-07

Circuits and methods for driving light sources

#10
20120112653
2012-05-10

Electronic ballast for operating at least one discharge lamp

#11
20120001556
2012-01-05

Hybrid light source

#12
20110291562
2011-12-01

LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER

#13
20110273105
2011-11-10

Method for driving lamp of backlight control circuit

#14
20110266960
2011-11-03

Driver system and method with cyclic configuration for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps

#15
20110204812
2011-08-25

Transformer and liquid crystal display apparatus having the same

#16
20110181204
2011-07-28

Balancing transformers for multi-lamp operation

#17
20110101879
2011-05-05

Electronic ballast circuit for lamps

#18
20110101865
2011-05-05

Multi-lamp driving system

#19
20110007229
2011-01-13

LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER

#20
20100328969
2010-12-30

Resonant power converter comprising a matched piezoelectric transformer

#21
20100277090
2010-11-04

Triangular-wave generating circuit, and inverter, light emitting device and liquid crystal television using the circuit

#22
20100259189
2010-10-14

Method and structure of forming a fluorescent lighting system

#23
20100253705
2010-10-07

BACKLIGHT DEVICE AND DISPLAY DEVICE

#24
20100244723
2010-09-30

Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps

#25
20100220050
2010-09-02

BACKLIGHT DEVICE AND DISPLAY DEVICE PROVIDED WITH THE SAME

#26
20100202132
2010-08-12

BLACKLIGHTING DEVICE AND DISPLAY DEVICE PROVIDED WITH THE SAME

#27
20100194310
2010-08-05

Control circuit for inverter

#28
20100188016
2010-07-29

Discharge Lamp Driving Apparatus

#29
20100188008
2010-07-29

Lighting controllers

#30
20100164392
2010-07-01

DISCHARGE LAMP LIGHTING APPARATUS

#31
20100127640
2010-05-27

Brightness-adjustable illumination driving system

#32
20100109569
2010-05-06

TRANSFORMER WITH ADJUSTABLE LEAKAGE INDUCTANCE AND DRIVING DEVICE USING THE SAME

#33
20100109487
2010-05-06

Piezoelectric transformer with pinwheel type electrode

#34
20100097005
2010-04-22

Circuit arrangement and method for operating a discharge lamp

#35
20100090615
2010-04-15

Dimming circuit for controlling luminance of light source and the method for controlling luminance

#36
20100060200
2010-03-11

Electronic ballast having a symmetric topology

#37
20100060187
2010-03-11

Hybrid light source

#38
20100060186
2010-03-11

Measurement circuit for an electronic ballast

#39
20100052564
2010-03-04

Backlight assembly and method of driving the same

#40
20100045200
2010-02-25

Lamp drive circuit for driving a number of lamps and balancing currents flowing through the lamps

#41
20100039038
2010-02-18

Electronic ballast with high power factor

#42
20100026196
2010-02-04

Discharge tube driving device

#43
20100007288
2010-01-14

Backlight module control system whose two backlight sub-modules are in a closed loop

#44
20090316449
2009-12-24

Inverter and method for controlling output frequency of inverter

#45
20090284163
2009-11-19

Method and apparatus for driving multiple parallel discharge lamps

#46
20090284160
2009-11-19

CURRENT BALANCING CIRCUIT

#47
20090267535
2009-10-29

AC POWER SOURCE APPARATUS

#48
20090267521
2009-10-29

Balancing transformers for multi-lamp operation

#49
20090262279
2009-10-22

Inverter for light source device, light source device, display device and liquid crystal display device

#50
20090237346
2009-09-24

Inverter circuit of driving a lamp and backlight module using the same

#51
20090213064
2009-08-27

Liquid crystal display device and backlight device thereof

#52
20090195178
2009-08-06

Balancing arrangement with reduced amount of balancing transformers

#53
20090195175
2009-08-06

Direct coupled balancer drive for floating lamp structure

#54
20090195174
2009-08-06

Arrangement suitable for driving floating CCFL based backlight

#55
20090195173
2009-08-06

Discharge lamp operating system

#56
20090195172
2009-08-06

Inverter with adjustable resonance gain

#57
20090189531
2009-07-30

Backlight module

#58
20090184667
2009-07-23

Voltage supply module and backlight assembly having the same

#59
20090184661
2009-07-23

Electronic circuit for operating a plurality of gas discharge lamps across a common voltage source

#60
20090179581
2009-07-16

INVERTER CIRCUIT, BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY HAVING THE SAME, AND METHOD THEREOF

#61
20090174644
2009-07-09

Liquid crystal display device having an improved backlight

#62
20090153074
2009-06-18

Lamp and driving device for backlight assembly having the same

#63
20090153069
2009-06-18

Module for parallel lighting and balancer coil for discharge lamp

#64
20090152946
2009-06-18

Power supply device

#65
20090146577
2009-06-11

Transformer, illuminating apparatus using the same, and display apparatus using the same

#66
20090115934
2009-05-07

Liquid crystal display

#67
20090102391
2009-04-23

Enhanced color contrast light source

#68
20090096387
2009-04-16

Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps

#69
20090091267
2009-04-09

Backlight assembly and a display device having the same

#70
20090072762
2009-03-19

Backlight control circuit

#71
20090072753
2009-03-19

Fluorescent tube having an increasing internal diameter, a method of driving the fluorescent tube, an illuminating device for display device, and a display device having the illuminating device

#72
20090033810
2009-02-05

Self-excited inverter and LCD television apparatus

#73
20090033242
2009-02-05

Coil component and display device using same

#74
20090021179
2009-01-22

Backlight driving system for liquid crystal display

#75
20090015068
2009-01-15

APPARATUS FOR SUPPLYING POWER AND LIQUID CRYSTAL DISPLAY HAVING THE SAME

#76
20090010031
2009-01-08

ZERO-VOLTAGE-SWITCHING ELECTRIC CONVERTER

#77
20090009106
2009-01-08

Circuit for driving light sources using balanced feedback signal

#78
20090001898
2009-01-01

Cold cathode tube drive device

#79
20080315792
2008-12-25

Method and circuit for correcting a difference in light output at opposite ends of a fluorescent lamp array

#80
20080291155
2008-11-27

Liquid crystal display device

#81
20080290813
2008-11-27

Electronically controlling acoustic energy from piezoelectric transformers

#82
20080252796
2008-10-16

Liquid crystal television and backlight unit

#83
20080225446
2008-09-18

Transient reversing voltage detecting circuit

#84
20080211615
2008-09-04

INVERTER TRANSFORMER

#85
20080211305
2008-09-04

Circuit structure for driving a plurality of cold cathode fluorescent lamps

#86
20080203944
2008-08-28

Lighting apparatus with current feedback

#87
20080191639
2008-08-14

Flat panel display having a backlight module

#88
20080180207
2008-07-31

Inverter transformer and inverter power module having the same for use in electric/electronic device

#89
20080169769
2008-07-17

MULTI-LAMPS DRIVING DEVICE AND TRANSFORMER THEREOF

#90
20080158135
2008-07-03

BACKLIGHT ASSEMBLY, METHOD OF DRIVING THE SAME, AND LIQUID CRYSTAL DISPLAY HAVING THE SAME

#91
20080157685
2008-07-03

AC inverter capable of driving multiple lamps for LCD panel backlight

#92
20080149378
2008-06-26

LIGHT SOURCE SIMULATING DEVICE

#93
20080143925
2008-06-19

LAMP AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME

#94
20080143276
2008-06-19

Transformer and multi-lamp driving circuit using the same

#95
20080136289
2008-06-12

Driving Circuit of Piezoelectric Transformer

#96
20080116823
2008-05-22

Current-balancing apparatus for lamps

#97
20080116822
2008-05-22

High voltage transformer for backlight power source

#98
20080116821
2008-05-22

Electronic circuit for operating a plurality of gas discharge lamps at a common voltage source

#99
20080101061
2008-05-01

Illuminator and display device using the same

#100
20080100229
2008-05-01

Ballast for cold cathode fluorescent lamp

#101
20080088403
2008-04-17

Inverter transformer

#102
20080088247
2008-04-17

Driving device for driving discharge lamps and electronic device employing the same

#103
20080088178
2008-04-17

Self-excitation system

#104
20080079526
2008-04-03

LIGHT TUBE DRIVING CIRCUIT AND TRANSFORMER THEREOF

#105
20080079440
2008-04-03

Inverter circuit and backlight assembly having the same

#106
20080074062
2008-03-27

Multiple discharge lamp lighting apparatus

#107
20080067958
2008-03-20

Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display

#108
20080067949
2008-03-20

Piezoelectric transformer module for generating balance resonance driving current and related light module

#109
20080067944
2008-03-20

Circuit structure for LCD backlight

#110
20080061712
2008-03-13

Uniform Back-Lighting Device And Display Device Therewith

#111
20080061711
2008-03-13

Balancing transformers for multi-lamp operation

#112
20080061710
2008-03-13

Current balancing circuit

#113
20080061709
2008-03-13

Inverter circuit and backlight assembly having the same

#114
20080061708
2008-03-13

System and method for driving a multi-lamp

#115
20080061705
2008-03-13

CCFL INVERTER WITH SINGLE TRANSISTOR

#116
20080048580
2008-02-28

Transformer for driving multi-lamp and backlight module thereof

#117
20080047743
2008-02-28

Multilayer Substrate With Built-In Capacitors, Method For Manufacturing The Same, And Cold-Cathode Tube Lighting Device

#118
20080042967
2008-02-21

Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display

#119
20080042627
2008-02-21

Voltage feedback circuit for liquid crystal display backlight inverter

#120
20080036394
2008-02-14

CURRENT SENSING TRANSFORMER, METHOD OF MANUFACTURING CURRENT SENSING TRANSFORMER, LAMP POWER SUPPLY HAVING THE CURRENT SENSING TRANSFORMER, AND LIQUID CRYSTAL DISPLAY HAVING THE LAMP POWER SUPPLY

#121
20080036393
2008-02-14

Inverter circuit for discharge lamps for multi-lamp lighting and surface light source system

#122
20080024075
2008-01-31

Apparatus and method for striking a fluorescent lamp

#123
20080012500
2008-01-17

Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display

#124
20080001550
2008-01-03

Multi-lamp driver with active current regulator

#125
20070285020
2007-12-13

Current balance circuit

#126
20070279368
2007-12-06

Low intensity displays compatible with night vision imaging systems

#127
20070278969
2007-12-06

Lamp drive circuit for driving a number of lamps and balancing currents flowing through the lamps

#128
20070273303
2007-11-29

Current balancing circuit for a multi-lamp system

#129
20070273297
2007-11-29

Driver system and method with cyclic configuration for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps

#130
20070268676
2007-11-22

DRIVING CIRCUIT FOR ILLUMINATING AND PROTECTING MULTIPLE DISCHARGE LAMPS WITH TRACE-TO-TRACE CAPACITANCE

#131
20070267985
2007-11-22

Flat panel display having backlight module

#132
20070267979
2007-11-22

Primary side current balancing scheme for multiple CCF lamp operation

#133
20070262727
2007-11-15

Backlight inverter and method of driving same

#134
20070251886
2007-11-01

Supply device for ultraviolet lamps used in the treatment of water

#135
20070247267
2007-10-25

Inverter transformer

#136
20070229084
2007-10-04

Discharge lamp driving circuit having a signal detection circuit therein

#137
20070229002
2007-10-04

Discharge lamp driving circuit and method of driving a discharge lamp

#138
20070228997
2007-10-04

Circuit arrangement for operating high-pressure discharge lamps and operating method for a high-pressure discharge lamp

#139
20070228987
2007-10-04

Discharge tube drive circuit

#140
20070222400
2007-09-27

METHOD AND APPARATUS FOR EQUALIZING CURRENT IN A FLUORESCENT LAMP ARRAY

#141
20070217183
2007-09-20

Device for driving lamps

#142
20070216511
2007-09-20

Transformer and core set thereof

#143
20070216508
2007-09-20

TRANSFORMER WITH ADJUSTABLE LEAKAGE INDUCTANCE AND DRIVING DEVICE USING THE SAME

#144
20070200507
2007-08-30

DEVICE FOR DRIVING LIGHT SOURCE MODULE

#145
20070188115
2007-08-16

Backlight module having a chambered circuit board

#146
20070182702
2007-08-09

Liquid crystal display device having an improved backlight

#147
20070182282
2007-08-09

Piezoelectric transducer drive circuit and cold cathode tube lighting device having the same

#148
20070171181
2007-07-26

Power supply device for a LCD backlight panel

#149
20070170872
2007-07-26

Control device for multiple lamp currents of liquid crystal display backlight source

#150
20070164686
2007-07-19

Cold-cathode fluorescent lamp multiple lamp current matching circuit

#151
20070164685
2007-07-19

Discharge lamp lighting apparatus

#152
20070159284
2007-07-12

Transformer having auxiliary winding coil for sensing magnetic flux balance and driving circuit using the same

#153
20070159114
2007-07-12

Inverter having single switching device

#154
20070152608
2007-07-05

Circuit structure for driving a plurality of cold cathode flourescent lamps

#155
20070145910
2007-06-28

Backlight module and driving circuit module thereof

#156
20070145909
2007-06-28

Inductively-powered gas discharge lamp circuit

#157
20070132406
2007-06-14

Cold-cathode tube lighting device for use in a plurality of cold-cathode tubes lit by two low-impedance power sources

#158
20070132400
2007-06-14

Apparatus for driving backlight of liquid crystal display

#159
20070126370
2007-06-07

Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly

#160
20070126369
2007-06-07

Apparatus for driving a plurality of lamps

#161
20070120502
2007-05-31

Inverter circuit, backlight assembly and liquid crystal display with the same

#162
20070120499
2007-05-31

Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly

#163
20070120441
2007-05-31

Piezoelectric transformer driving apparatus and piezoelectric transformer driving method

#164
20070115088
2007-05-24

Discharge lamp lighting apparatus

#165
20070114953
2007-05-24

Backlight assembly having voltage boosting section with electrically isolated primary side and secondary side

#166
20070114952
2007-05-24

Light source driver circuit

#167
20070108918
2007-05-17

Inverter circuit, backlight assembly, liquid crystal display having the same, and method thereof

#168
20070103127
2007-05-10

Multi-lamp driver with active current regulator

#169
20070093165
2007-04-26

Cold-cathode tube lighting device for use in a plurality of cold-cathode tubes lit by one low-impedance power source

#170
20070076386
2007-04-05

Optimized light fixture circuit board

#171
20070052370
2007-03-08

Multi-lamp driving system

#172
20070046414
2007-03-01

Inverse phase converter

#173
20070046147
2007-03-01

Power supply device

#174
20070035374
2007-02-15

Transformer

#175
20070035258
2007-02-15

Lamp drive circuit

#176
20070035257
2007-02-15

Balance coil and inverter for driving backlight

#177
20070024212
2007-02-01

Multi-lamp driver

#178
20070018942
2007-01-25

LIGHT SOURCE DRIVING DEVICE

#179
20070018593
2007-01-25

Balanced current lamp module and multi-lamp circuit

#180
20070013320
2007-01-18

Feedback circuit for push-pull inverters

#181
20070001622
2007-01-04

Balance transformer

#182
20070001621
2007-01-04

Multiple lamp balance transformer and drive circuit

#183
20060290453
2006-12-28

Transformer

#184
20060284575
2006-12-21

Detecting lamp currents and providing feedback for adjusting lamp driving voltages

#185
20060279232
2006-12-14

Discharge tube lighting apparatus, light source apparatus, and display apparatus

#186
20060273745
2006-12-07

Current balancing circuit for a multi-lamp system

#187
20060268192
2006-11-30

Liquid crystal display

#188
20060261758
2006-11-23

Limited open circuit voltage ballast

#189
20060244393
2006-11-02

Capacitive coupling to aid ignition in discharge lamps

#190
20060226796
2006-10-12

High-voltage discharge lamps parallel and driving arrangement

#191
20060220594
2006-10-05

Method for controlling an inverter under altering voltage

#192
20060220593
2006-10-05

Nested balancing topology for balancing current among multiple lamps

#193
20060181384
2006-08-17

Light tube driving circuit and transformer thereof

#194
20060152170
2006-07-13

System for operating a plurality of negative dynamical impedance loads

#195
20060146567
2006-07-06

Backlight for a display device

#196
20060145635
2006-07-06

Lamp driving apparatus, liquid crystal display comprising the same, and driving method thereof

#197
20060125424
2006-06-15

Single ground scheme for CCFL circuitry

#198
20060120109
2006-06-08

Inverter circuit, fluorescent bulb operating device, backlight device, and liquid crystal display device

#199
20060119293
2006-06-08

Lamp load-sharing circuit

#200
20060119286
2006-06-08

Lamp driving topology with current balancing scheme

#201
20060114092
2006-06-01

Wound-rotor transformer and power source device using said wound-rotor transformer

#202
20060113925
2006-06-01

Lamp current balancing device

#203
20060108953
2006-05-25

Lighting arrangement having a fluorescent lamp, particularly a cold cathode lamp

#204
20060097656
2006-05-11

Lamp current control device

#205
20060097651
2006-05-11

Supply apparatus for high pressure lamps

#206
20060091821
2006-05-04

Discharge-lamp control device

#207
20060091819
2006-05-04

Discharge lamp drive device and liquid crystal display device

#208
20060087254
2006-04-27

Multi-lamp tube controlling circuit

#209
20060077659
2006-04-13

Liquid crystal display

#210
20060071617
2006-04-06

Frequency synchronization device for LCD lamps

#211
20060066551
2006-03-30

Inverter driving circuitry

#212
20060066246
2006-03-30

Inverter transformer

#213
20060061982
2006-03-23

Backlight assembly including inverter for liquid crystal display device

#214
20060061305
2006-03-23

Backlight unit and method for driving the same

#215
20060061304
2006-03-23

Discharge lamp driving circuit

#216
20060061298
2006-03-23

Push-pull inverter circuit

#217
20060055338
2006-03-16

Module for parallel lighting and balancer coil for discharge lamp

#218
20060049959
2006-03-09

Digital control system for LCD backlights

#219
20060043900
2006-03-02

Lamp and driving device for backlight assembly having the same

#220
20060038513
2006-02-23

Apparatus and method for striking a fluorescent lamp

#221
20060038466
2006-02-23

Piezoelectric transformer, piezoelectric transformer unit, inverter circuit, light emission control device, and liquid crystal display device

#222
20060022610
2006-02-02

Incremental distributed driver

#223
20060017408
2006-01-26

Cold cathode fluorescent lamp driving system

#224
20060006810
2006-01-12

System and method for reducing information handling system distributed capacitance

#225
20060001386
2006-01-05

Backlight unit for liquid crystal display device

#226
20050285478
2005-12-29

Driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel

#227
20050285476
2005-12-29

Piezoelectric power supply

#228
20050280625
2005-12-22

Liquid crystal display device having an improved backlight

#229
20050280374
2005-12-22

Apparatus and method for driving lamp of liquid crystal display device

#230
20050253536
2005-11-17

Fluorescent lamp driver and liquid crystal display apparatus

#231
20050248288
2005-11-10

Light modulation method and apparatus for cold cathode fluorescent lamps

#232
20050248287
2005-11-10

Current control apparatus for fluorescent lamps

#233
20050225261
2005-10-13

Primary side current balancing scheme for multiple CCF lamp operation

#234
20050225203
2005-10-13

Multi-load driver circuit equipped with piezoelectric transformation circuits

#235
20050219029
2005-10-06

Transformer

#236
20050218826
2005-10-06

Multi-lamp backlight system

#237
20050212637
2005-09-29

Transformer and lamp driving system utilizing the same

#238
20050200305
2005-09-15

Multi-lamp drive device

#239
20050184678
2005-08-25

Starting device for a high-pressure discharge lamp, and an illuminating system

#240
20050156542
2005-07-21

Lighting apparatus formed by serially-driven lighting units

#241
20050151424
2005-07-14

Device and method for driving a plurality of loads

#242
20050146291
2005-07-07

Liquid crystal and device of driving light source therefor

#243
20050146286
2005-07-07

Multi-lamp drive device

#244
20050141151
2005-06-30

Integrated multi-capacitor network

#245
20050140312
2005-06-30

Backlight apparatus for liquid crystal display

#246
20050134183
2005-06-23

Back light device for liquid crystal displays

#247
20050127848
2005-06-16

Direct-type back light device

#248
20050122741
2005-06-09

Illuminator and display device using the same

#249
20050099144
2005-05-12

Method and apparatus for controlling visual enhancement of luminent devices

#250
20050099143
2005-05-12

Drive circuit for illumination unit

#251
20050099139
2005-05-12

Apparatus of driving lamp and liquid crystal display device using the same

#252
20050093472
2005-05-05

Balancing transformers for ring balancer

#253
20050093471
2005-05-05

Current sharing scheme for multiple CCF lamp operation

#254
20050088113
2005-04-28

Inverter circuit for surface light source system

#255
20050067978
2005-03-31

Frequency synchronization device for LCD lamps

#256
20050062433
2005-03-24

Power supply system for liquid crystal monitors

#257
20050023998
2005-02-03

Circuit structure for driving a plurality of cold cathode fluorescent lamps

#258
20050023988
2005-02-03

Cold cathode fluorescent lamp driver circuit

#259
20050017658
2005-01-27

Transformer and lamp system utilizing the same

#260
20050007333
2005-01-13

Backlight driving circuit

#261
20050007029
2005-01-13

Inverter transformer and inverter circuit

#262
14336440
2016-10-25

Method to detect uneven AC load or parallel load removal