TWI222336B - Low noise light source operation circuit and method - Google Patents

Low noise light source operation circuit and method Download PDF

Info

Publication number
TWI222336B
TWI222336B TW092123867A TW92123867A TWI222336B TW I222336 B TWI222336 B TW I222336B TW 092123867 A TW092123867 A TW 092123867A TW 92123867 A TW92123867 A TW 92123867A TW I222336 B TWI222336 B TW I222336B
Authority
TW
Taiwan
Prior art keywords
light source
signal
synchronous
coupled
circuit
Prior art date
Application number
TW092123867A
Other languages
English (en)
Chinese (zh)
Other versions
TW200509751A (en
Inventor
Andre Yu
Original Assignee
Beyond Innovation Tech Co Ltd
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 Beyond Innovation Tech Co Ltd filed Critical Beyond Innovation Tech Co Ltd
Priority to TW092123867A priority Critical patent/TWI222336B/zh
Priority to KR1020030075809A priority patent/KR20050022847A/ko
Priority to JP2003375392A priority patent/JP2005079085A/ja
Application granted granted Critical
Publication of TWI222336B publication Critical patent/TWI222336B/zh
Publication of TW200509751A publication Critical patent/TW200509751A/zh

Links

Classifications

    • 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
    • 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
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Optical Communication System (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Semiconductor Lasers (AREA)
  • Liquid Crystal (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
TW092123867A 2003-08-29 2003-08-29 Low noise light source operation circuit and method TWI222336B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
TW092123867A TWI222336B (en) 2003-08-29 2003-08-29 Low noise light source operation circuit and method
KR1020030075809A KR20050022847A (ko) 2003-08-29 2003-10-29 저잡음 광원 동작 회로 및 방법
JP2003375392A JP2005079085A (ja) 2003-08-29 2003-11-05 低ノイズ光源動作回路およびその方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW092123867A TWI222336B (en) 2003-08-29 2003-08-29 Low noise light source operation circuit and method

Publications (2)

Publication Number Publication Date
TWI222336B true TWI222336B (en) 2004-10-11
TW200509751A TW200509751A (en) 2005-03-01

Family

ID=34420996

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092123867A TWI222336B (en) 2003-08-29 2003-08-29 Low noise light source operation circuit and method

Country Status (3)

Country Link
JP (1) JP2005079085A (ja)
KR (1) KR20050022847A (ja)
TW (1) TWI222336B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI494732B (zh) * 2011-06-21 2015-08-01 Monolithic Power Systems Inc 電流控制電路和電流控制方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100419521C (zh) * 2005-08-04 2008-09-17 群康科技(深圳)有限公司 液晶显示器
US9185784B2 (en) * 2008-06-02 2015-11-10 Richard Landry Gray Line synchronized electrical device and controlling method thereof
CN102045914B (zh) * 2009-10-20 2015-04-15 立锜科技股份有限公司 具有精准平均电流的迟滞模式led驱动器及方法
CN104010425B (zh) * 2012-04-13 2016-02-03 江苏理工学院 照明用发光二极管的无变压器电源
TWI548303B (zh) * 2014-12-05 2016-09-01 隆達電子股份有限公司 調光控制電路與調光控制方法
CN105374323B (zh) * 2015-12-18 2018-02-13 深圳Tcl数字技术有限公司 点阵背光源驱动方法、装置和系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI494732B (zh) * 2011-06-21 2015-08-01 Monolithic Power Systems Inc 電流控制電路和電流控制方法

Also Published As

Publication number Publication date
JP2005079085A (ja) 2005-03-24
TW200509751A (en) 2005-03-01
KR20050022847A (ko) 2005-03-08

Similar Documents

Publication Publication Date Title
Doshi et al. Control of solid-state lamps using a multiphase pulsewidth modulation technique
JP3533405B2 (ja) より高い周波数の冷陰極蛍光灯電源
US6876157B2 (en) Lamp inverter with pre-regulator
US20110115391A1 (en) Led lamp and led lamp module
JP4686434B2 (ja) アクティブ型電流調整回路及びその発光構造
TWI222336B (en) Low noise light source operation circuit and method
JP2006049028A (ja) 放電灯点灯装置
US7256530B2 (en) Piezoelectric transformer drive circuit and cold cathode tube lighting apparatus
US20080025056A1 (en) Power factor correction circuits
TW540253B (en) A voltage-fed push-pull LLC resonant LCD backlighting inverter circuit
WO2003003555A1 (en) Cold-cathode driver and liquid crystal display
CN101959344B (zh) 多组直流负载的电流平衡供电电路
TWI379482B (en) Current balance power supplying circuit for plural sets of dc loads
JP4214276B2 (ja) 放電灯点灯装置
US8035608B2 (en) Inverter circuit of driving a lamp and backlight module using the same
JP4993548B2 (ja) 自励式インバータ駆動回路
CN103619115A (zh) 一种荧光灯激励电路
US7723927B2 (en) Inverter circuit with single sampling unit and liquid crystal display with same
Pan et al. A high-frequency half-bridge driving circuit topology for HID lamps
Pan et al. Digital control of low-frequency, small-wattage, high-intensity discharge lamps
US7015659B2 (en) Apparatus for driving a light tube and method therefor
JPH0956175A (ja) 圧電トランスを含む電源回路装置
Issa Display power analysis and design guidelines to reduce power consumption
JP2008218216A (ja) 蛍光管駆動方法および装置
TW560165B (en) Dual-light voltage modulation and compensation control circuit for scanner

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees