BRPI0716524A2 - conjunto de elementos de diodo emissor de luz para um dispositivo de luz de fundo e um visor de luz de fundo - Google Patents

conjunto de elementos de diodo emissor de luz para um dispositivo de luz de fundo e um visor de luz de fundo

Info

Publication number
BRPI0716524A2
BRPI0716524A2 BRPI0716524-2A2A BRPI0716524A BRPI0716524A2 BR PI0716524 A2 BRPI0716524 A2 BR PI0716524A2 BR PI0716524 A BRPI0716524 A BR PI0716524A BR PI0716524 A2 BRPI0716524 A2 BR PI0716524A2
Authority
BR
Brazil
Prior art keywords
backlight
led elements
display
backlight device
backlight display
Prior art date
Application number
BRPI0716524-2A2A
Other languages
English (en)
Portuguese (pt)
Inventor
Gerard Rilly
Gerard Morizot
Roy Philippe Le
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0716524A2 publication Critical patent/BRPI0716524A2/pt

Links

Classifications

    • 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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
    • G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/024—Scrolling of light from the illumination source over the display in combination with the scanning of the display screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Led Devices (AREA)
  • Control Of El Displays (AREA)
BRPI0716524-2A2A 2006-09-26 2007-09-19 conjunto de elementos de diodo emissor de luz para um dispositivo de luz de fundo e um visor de luz de fundo BRPI0716524A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0653938A FR2906396A1 (fr) 2006-09-26 2006-09-26 Ensemble d'elements a diode electroluminescente pour dispositif de retro-eclairage, dispositif de retro-eclairage et ecran a retro-eclairage.
PCT/EP2007/059912 WO2008037641A1 (en) 2006-09-26 2007-09-19 Set of light emissive diode elements for a backlight device and backlight display

Publications (1)

Publication Number Publication Date
BRPI0716524A2 true BRPI0716524A2 (pt) 2013-09-24

Family

ID=37905847

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0716524-2A2A BRPI0716524A2 (pt) 2006-09-26 2007-09-19 conjunto de elementos de diodo emissor de luz para um dispositivo de luz de fundo e um visor de luz de fundo

Country Status (8)

Country Link
US (1) US20100194790A1 (https=)
EP (1) EP2070073A1 (https=)
JP (1) JP5331696B2 (https=)
KR (1) KR101620554B1 (https=)
CN (1) CN101517626B (https=)
BR (1) BRPI0716524A2 (https=)
FR (1) FR2906396A1 (https=)
WO (1) WO2008037641A1 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101289639B1 (ko) * 2008-07-04 2013-07-30 엘지디스플레이 주식회사 백라이트 유닛의 광원 구동장치 및 방법
US8994639B2 (en) 2012-05-16 2015-03-31 Shenzhen China Star Optoelectronics Technology Co., Ltd. LED backlight driving circuit, backlight module, and LCD device
CN102682719B (zh) * 2012-05-16 2015-07-15 深圳市华星光电技术有限公司 一种led背光驱动电路、背光模组及液晶显示装置

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JPH0974224A (ja) * 1995-09-05 1997-03-18 Canon Inc 点灯回路
SE519550C2 (sv) * 1997-01-03 2003-03-11 Ericsson Telefon Ab L M Drivkrets samt förfarande för att driva en sådan drivkrets
JP2000150191A (ja) * 1998-11-13 2000-05-30 Murata Mfg Co Ltd 冷陰極管駆動装置
US6618031B1 (en) * 1999-02-26 2003-09-09 Three-Five Systems, Inc. Method and apparatus for independent control of brightness and color balance in display and illumination systems
US7176948B2 (en) * 2000-04-12 2007-02-13 Honeywell International Inc. Method, apparatus and computer program product for controlling LED backlights and for improved pulse width modulation resolution
JP3971892B2 (ja) * 2000-09-08 2007-09-05 株式会社日立製作所 液晶表示装置
US20020159002A1 (en) * 2001-03-30 2002-10-31 Koninklijke Philips Electronics N.V. Direct backlighting for liquid crystal displays
US7088321B1 (en) * 2001-03-30 2006-08-08 Infocus Corporation Method and apparatus for driving LED light sources for a projection display
US7088334B2 (en) * 2001-06-28 2006-08-08 Matsushita Electric Industrial Co., Ltd. Liquid crystal display device and manufacturing method thereof, and drive control method of lighting unit
AU2003289238A1 (en) * 2002-12-06 2004-06-30 Sharp Kabushiki Kaisha Liquid crystal display device
GB0313044D0 (en) * 2003-06-06 2003-07-09 Cambridge Flat Projection Flat panel scanning illuminator
KR100995640B1 (ko) * 2003-07-07 2010-11-19 엘지디스플레이 주식회사 액정표시모듈
KR20050050894A (ko) * 2003-11-26 2005-06-01 엘지.필립스 엘시디 주식회사 백라이트 유닛
US7358706B2 (en) * 2004-03-15 2008-04-15 Philips Solid-State Lighting Solutions, Inc. Power factor correction control methods and apparatus
JP4529573B2 (ja) * 2004-07-28 2010-08-25 三菱電機株式会社 面状光源装置及び液晶表示装置
TWI236165B (en) * 2004-07-30 2005-07-11 Au Optronics Corp Driving device for light emitted diode string
US7276861B1 (en) * 2004-09-21 2007-10-02 Exclara, Inc. System and method for driving LED
JP4539492B2 (ja) * 2004-11-19 2010-09-08 ソニー株式会社 バックライト装置、バックライト駆動方法及び液晶表示装置
JP4400443B2 (ja) * 2004-12-21 2010-01-20 カシオ計算機株式会社 発光駆動回路及びその駆動制御方法、並びに、表示装置及びその表示駆動方法
KR20060079983A (ko) * 2005-01-04 2006-07-07 삼성전자주식회사 액정 표시 장치
KR100638723B1 (ko) * 2005-02-04 2006-10-30 삼성전기주식회사 Led 어레이 구동 장치 및 이를 이용한 백라이트 구동 장치
US7579818B2 (en) * 2005-07-28 2009-08-25 Semiconductor Components Industries, L.L.C. Current regulator and method therefor
TWI277225B (en) * 2005-08-03 2007-03-21 Beyond Innovation Tech Co Ltd Apparatus of light source and adjustable control circuit for LEDs

Also Published As

Publication number Publication date
KR101620554B1 (ko) 2016-05-12
KR20090067140A (ko) 2009-06-24
CN101517626A (zh) 2009-08-26
JP2010504621A (ja) 2010-02-12
JP5331696B2 (ja) 2013-10-30
FR2906396A1 (fr) 2008-03-28
CN101517626B (zh) 2012-03-14
WO2008037641A1 (en) 2008-04-03
EP2070073A1 (en) 2009-06-17
US20100194790A1 (en) 2010-08-05

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B12B Appeal against refusal [chapter 12.2 patent gazette]
B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25A Requested transfer of rights approved

Owner name: THOMSON LICENSING DTV (FR)

B25A Requested transfer of rights approved

Owner name: INTERDIGITAL MADISON PATENT HOLDINGS (FR)