TWI563868B - Led driving device and electrical apparatus using the same - Google Patents

Led driving device and electrical apparatus using the same

Info

Publication number
TWI563868B
TWI563868B TW100119463A TW100119463A TWI563868B TW I563868 B TWI563868 B TW I563868B TW 100119463 A TW100119463 A TW 100119463A TW 100119463 A TW100119463 A TW 100119463A TW I563868 B TWI563868 B TW I563868B
Authority
TW
Taiwan
Prior art keywords
same
driving device
electrical apparatus
led driving
led
Prior art date
Application number
TW100119463A
Other languages
English (en)
Other versions
TW201215223A (en
Inventor
Hiroyuki Tanigawa
Masaki Omi
Original Assignee
Rohm 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 Rohm Co Ltd filed Critical Rohm Co Ltd
Publication of TW201215223A publication Critical patent/TW201215223A/zh
Application granted granted Critical
Publication of TWI563868B publication Critical patent/TWI563868B/zh

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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/026—Arrangements or methods related to booting a display
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Dc-Dc Converters (AREA)
TW100119463A 2010-06-03 2011-06-02 Led driving device and electrical apparatus using the same TWI563868B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010128218A JP5595126B2 (ja) 2010-06-03 2010-06-03 Ｌｅｄ駆動装置およびこれを備えた電子機器

Publications (2)

Publication Number Publication Date
TW201215223A TW201215223A (en) 2012-04-01
TWI563868B true TWI563868B (en) 2016-12-21

Family

ID=45052712

Family Applications (1)

Application Number Title Priority Date Filing Date
TW100119463A TWI563868B (en) 2010-06-03 2011-06-02 Led driving device and electrical apparatus using the same

Country Status (4)

Country Link
US (1) US20110298384A1 (zh)
JP (1) JP5595126B2 (zh)
CN (1) CN102270430B (zh)
TW (1) TWI563868B (zh)

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JP5525451B2 (ja) 2007-11-16 2014-06-18 アレグロ・マイクロシステムズ・エルエルシー 複数の直列接続された発光ダイオード列を駆動するための電子回路
US8692482B2 (en) 2010-12-13 2014-04-08 Allegro Microsystems, Llc Circuitry to control a switching regulator
US9265104B2 (en) 2011-07-06 2016-02-16 Allegro Microsystems, Llc Electronic circuits and techniques for maintaining a consistent power delivered to a load
US9155156B2 (en) 2011-07-06 2015-10-06 Allegro Microsystems, Llc Electronic circuits and techniques for improving a short duty cycle behavior of a DC-DC converter driving a load
US8610371B2 (en) * 2011-12-22 2013-12-17 Allegro Microsystems, Llc Circuitry to drive parallel loads sequentially
US9144126B2 (en) * 2012-08-22 2015-09-22 Allegro Microsystems, Llc LED driver having priority queue to track dominant LED channel
US8957607B2 (en) * 2012-08-22 2015-02-17 Allergo Microsystems, LLC DC-DC converter using hysteretic control and associated methods
TWI482141B (zh) * 2013-01-18 2015-04-21 Power Forest Technology 具有調變被驅動元件之電性參數及過壓保護元件之驅動電路
TWI472138B (zh) * 2013-01-18 2015-02-01 No inductance power conversion circuit
US8994279B2 (en) * 2013-01-29 2015-03-31 Allegro Microsystems, Llc Method and apparatus to control a DC-DC converter
CN103150998B (zh) * 2013-03-19 2015-11-25 深圳市华星光电技术有限公司 Led背光驱动电路、背光模组、液晶显示装置
CN103400553B (zh) * 2013-07-26 2015-09-02 深圳市华星光电技术有限公司 Led背光驱动电路以及液晶显示器
US9210748B2 (en) * 2013-11-20 2015-12-08 Texas Instruments Incorporated Systems and methods of driving multiple outputs
CN104008735B (zh) * 2014-06-18 2016-06-08 深圳市华星光电技术有限公司 Led背光驱动电路以及液晶显示器
EP3286987B1 (en) * 2015-04-23 2020-04-08 Versitech Limited Ac-dc single-inductor multiple-output led drivers
JP2017079501A (ja) * 2015-10-19 2017-04-27 アイリスオーヤマ株式会社 Ｌｅｄ照明装置
US9578701B1 (en) * 2016-05-12 2017-02-21 Infineon Technologies Ag Switched capacitor LED matrix driver
US10349478B2 (en) 2017-01-27 2019-07-09 ISine Inc. High tolerance auto-ranging AC LED driver apparatus and methods
EP3934385B1 (en) 2017-11-14 2024-02-14 Koito Manufacturing Co., Ltd. Vehicle lamp, illumination circuit for same, current driver circuit
CN107809830B (zh) * 2017-12-06 2024-05-24 无锡恒芯微科技有限公司 一种Buck-boost LED驱动电路
TWI646862B (zh) * 2017-12-25 2019-01-01 技嘉科技股份有限公司 具有可調整發光頻率功能的電子裝置、電腦系統以及方法
FR3076396B1 (fr) * 2017-12-28 2021-12-03 Aledia Ecran d'affichage a diodes electroluminescentes
TWI659671B (zh) * 2018-02-06 2019-05-11 立錡科技股份有限公司 發光元件驅動電路
CN108898989A (zh) * 2018-07-11 2018-11-27 杭州视芯科技有限公司 Led显示装置及其驱动方法
CN111028791B (zh) * 2019-12-11 2021-03-23 昆山龙腾光电股份有限公司 一种背光驱动器及显示装置
CN112952927B (zh) * 2019-12-11 2024-02-13 台达电子工业股份有限公司 占空比限制电路、具有其的电源供应器及其操作方法
US11670224B1 (en) * 2022-01-06 2023-06-06 Novatek Microelectronics Corp. Driving circuit for LED panel and LED panel thereof
CN115132130A (zh) * 2022-07-18 2022-09-30 苏州华星光电技术有限公司 背光模组及显示装置

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CN101521967A (zh) * 2008-01-03 2009-09-02 崇贸科技股份有限公司 发光二极管驱动器的离线控制电路
TW201014183A (en) * 2008-09-26 2010-04-01 Eutech Microelectronics Inc Pulse-width modulation (PWM)-controlled soft ON/OFF circuit

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JP2008268642A (ja) * 2007-04-23 2008-11-06 Sony Corp バックライト装置、バックライト制御方法、および液晶表示装置
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US7825610B2 (en) * 2008-03-12 2010-11-02 Freescale Semiconductor, Inc. LED driver with dynamic power management
US7919928B2 (en) * 2008-05-05 2011-04-05 Micrel, Inc. Boost LED driver not using output capacitor and blocking diode
CN101605416B (zh) * 2008-06-13 2013-02-27 登丰微电子股份有限公司 发光二极管驱动电路及其控制器
JP4983735B2 (ja) * 2008-06-26 2012-07-25 ミツミ電機株式会社 電源制御用半導体集積回路
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TW200822801A (en) * 2006-11-09 2008-05-16 Beyond Innovation Tech Co Ltd Driving apparatus and method thereof
CN101521967A (zh) * 2008-01-03 2009-09-02 崇贸科技股份有限公司 发光二极管驱动器的离线控制电路
CN101505561A (zh) * 2008-02-05 2009-08-12 崇贸科技股份有限公司 发光二极管驱动器的控制电路及其离线控制电路
TW201014183A (en) * 2008-09-26 2010-04-01 Eutech Microelectronics Inc Pulse-width modulation (PWM)-controlled soft ON/OFF circuit

Also Published As

Publication number Publication date
CN102270430B (zh) 2015-11-25
JP5595126B2 (ja) 2014-09-24
CN102270430A (zh) 2011-12-07
TW201215223A (en) 2012-04-01
US20110298384A1 (en) 2011-12-08
JP2011253773A (ja) 2011-12-15

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