WO2009022804A3 - Planar light-source pulse-type driving circuit adopting a transformer - Google Patents

Planar light-source pulse-type driving circuit adopting a transformer Download PDF

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Publication number
WO2009022804A3
WO2009022804A3 PCT/KR2008/004539 KR2008004539W WO2009022804A3 WO 2009022804 A3 WO2009022804 A3 WO 2009022804A3 KR 2008004539 W KR2008004539 W KR 2008004539W WO 2009022804 A3 WO2009022804 A3 WO 2009022804A3
Authority
WO
WIPO (PCT)
Prior art keywords
transformer
planar light
driving circuit
switches
type driving
Prior art date
Application number
PCT/KR2008/004539
Other languages
French (fr)
Other versions
WO2009022804A2 (en
Inventor
Joung-Hu Park
In-Kyu Lee
Jongbok Baek
Bo Hyung Cho
Original Assignee
Samhwa Yang Heng Co Ltd
Joung-Hu Park
In-Kyu Lee
Jongbok Baek
Bo Hyung Cho
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samhwa Yang Heng Co Ltd, Joung-Hu Park, In-Kyu Lee, Jongbok Baek, Bo Hyung Cho filed Critical Samhwa Yang Heng Co Ltd
Publication of WO2009022804A2 publication Critical patent/WO2009022804A2/en
Publication of WO2009022804A3 publication Critical patent/WO2009022804A3/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—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
    • H05B41/2806—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 and specially adapted for lamps without electrodes in the vessel, e.g. surface discharge lamps, electrodeless discharge lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Dc-Dc Converters (AREA)
  • Led Devices (AREA)

Abstract

A planar light-source driving circuit includes: a transformer having a secondary winding connected to both power terminals of a planar light source; a switching module connected to a primary winding of the transformer, including one or more switches and converting a voltage outputted from an input voltage source and a capacitor into a pulse form in accordance with on/off operations of the one or more switches; a diode module including one or more diodes connected in parallel with the respective one or more switches for soft switching and power recovery driving,' an inductor connected to one end of the primary winding of the transformer; and the capacitor connected between the inductor and a ground, and charged with a predetermined voltage.
PCT/KR2008/004539 2007-08-13 2008-08-05 Planar light-source pulse-type driving circuit adopting a transformer WO2009022804A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0081094 2007-08-13
KR1020070081094A KR100893187B1 (en) 2007-08-13 2007-08-13 Planar light-source pulse-type driving circuit adopting a transformer

Publications (2)

Publication Number Publication Date
WO2009022804A2 WO2009022804A2 (en) 2009-02-19
WO2009022804A3 true WO2009022804A3 (en) 2009-04-30

Family

ID=40351274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/004539 WO2009022804A2 (en) 2007-08-13 2008-08-05 Planar light-source pulse-type driving circuit adopting a transformer

Country Status (2)

Country Link
KR (1) KR100893187B1 (en)
WO (1) WO2009022804A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102484932A (en) * 2009-06-30 2012-05-30 皇家飞利浦电子股份有限公司 Circuit for converting DC into AC pulsed voltage
WO2011001340A1 (en) * 2009-06-30 2011-01-06 Koninklijke Philips Electronics N.V. Circuit for converting dc into ac pulsed voltage
EP2389047B1 (en) * 2010-05-14 2012-11-28 Karlsruher Institut für Technologie Switching device and method for the efficient operation of a capacitive load
FR3055494B1 (en) * 2016-08-25 2018-09-21 Clarteis GENERATOR OF ELECTRICAL PULSES

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5844540A (en) * 1994-05-31 1998-12-01 Sharp Kabushiki Kaisha Liquid crystal display with back-light control function
KR20030006642A (en) * 2001-07-13 2003-01-23 삼성전자 주식회사 Camcorder having a rotatable display
US6674250B2 (en) * 2000-04-15 2004-01-06 Guang-Sup Cho Backlight including external electrode fluorescent lamp and method for driving the same
KR20060003705A (en) * 2004-07-07 2006-01-11 주식회사 브리지텍 The method for establishing of genuine copy and apparatus thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030066422A (en) * 2002-01-30 2003-08-09 문건우 Driver Circuit and Power Supply for Plasma Display Penel(PDP)
KR20060036952A (en) * 2004-10-27 2006-05-03 엘지.필립스 엘시디 주식회사 Backlight driving device and liquid crystal display device having the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5844540A (en) * 1994-05-31 1998-12-01 Sharp Kabushiki Kaisha Liquid crystal display with back-light control function
US6674250B2 (en) * 2000-04-15 2004-01-06 Guang-Sup Cho Backlight including external electrode fluorescent lamp and method for driving the same
KR20030006642A (en) * 2001-07-13 2003-01-23 삼성전자 주식회사 Camcorder having a rotatable display
KR20060003705A (en) * 2004-07-07 2006-01-11 주식회사 브리지텍 The method for establishing of genuine copy and apparatus thereof

Also Published As

Publication number Publication date
KR100893187B1 (en) 2009-04-16
KR20090016826A (en) 2009-02-18
WO2009022804A2 (en) 2009-02-19

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