JP5557431B2 - 液晶表示装置 - Google Patents

液晶表示装置 Download PDF

Info

Publication number
JP5557431B2
JP5557431B2 JP2008144324A JP2008144324A JP5557431B2 JP 5557431 B2 JP5557431 B2 JP 5557431B2 JP 2008144324 A JP2008144324 A JP 2008144324A JP 2008144324 A JP2008144324 A JP 2008144324A JP 5557431 B2 JP5557431 B2 JP 5557431B2
Authority
JP
Japan
Prior art keywords
operation mode
voltage
light emitting
reference voltage
liquid crystal
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP2008144324A
Other languages
English (en)
Japanese (ja)
Other versions
JP2009109974A5 (enExample
JP2009109974A (ja
Inventor
相 吉 李
勝 煥 文
起 讚 李
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Display Co Ltd
Original Assignee
Samsung Display 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 Samsung Display Co Ltd filed Critical Samsung Display Co Ltd
Publication of JP2009109974A publication Critical patent/JP2009109974A/ja
Publication of JP2009109974A5 publication Critical patent/JP2009109974A5/ja
Application granted granted Critical
Publication of JP5557431B2 publication Critical patent/JP5557431B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • G09G3/36—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 using liquid crystals
    • 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
    • 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
    • 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
    • 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
    • G09G2310/0237—Switching ON and OFF the backlight within one frame
    • 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
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
    • 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
    • G09G2320/0613—The adjustment depending on the type of the information to be displayed
    • G09G2320/062—Adjustment of illumination source parameters
    • 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
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
JP2008144324A 2007-10-30 2008-06-02 液晶表示装置 Expired - Fee Related JP5557431B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070109654A KR20090043865A (ko) 2007-10-30 2007-10-30 액정 표시 장치 및 그의 구동 방법
KR10-2007-0109654 2007-10-30

Publications (3)

Publication Number Publication Date
JP2009109974A JP2009109974A (ja) 2009-05-21
JP2009109974A5 JP2009109974A5 (enExample) 2011-07-21
JP5557431B2 true JP5557431B2 (ja) 2014-07-23

Family

ID=40582220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008144324A Expired - Fee Related JP5557431B2 (ja) 2007-10-30 2008-06-02 液晶表示装置

Country Status (4)

Country Link
US (1) US20090109166A1 (enExample)
JP (1) JP5557431B2 (enExample)
KR (1) KR20090043865A (enExample)
CN (1) CN101425278A (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101545697B1 (ko) 2008-08-29 2015-08-21 삼성디스플레이 주식회사 액정 표시 장치
KR101521098B1 (ko) * 2009-01-06 2015-05-20 삼성디스플레이 주식회사 광원 구동 방법 및 이를 수행하기 위한 광원 장치
US8686646B2 (en) 2009-05-27 2014-04-01 Rohm Co., Ltd. Illuminating device
JP5643489B2 (ja) * 2009-06-22 2014-12-17 ローム株式会社 照明灯および照明装置
KR101584602B1 (ko) * 2009-11-13 2016-01-21 삼성디스플레이 주식회사 광원 구동 방법 및 이를 수행하기 위한 표시 장치
KR101129993B1 (ko) * 2010-05-28 2012-03-28 엘지이노텍 주식회사 램프의 전류 제어 장치
JP2012168286A (ja) * 2011-02-10 2012-09-06 Sharp Corp 液晶ディスプレイパネルのバックライト制御装置、バックライト制御方法、及び液晶表示装置
US20140132493A1 (en) * 2012-11-15 2014-05-15 Shenzhen China Star Optoelectronics Technology Co., Ltd Clock Driver of Liquid Crystal Display
KR102045342B1 (ko) * 2012-12-28 2019-11-15 엘지디스플레이 주식회사 방전 제어 부를 포함하는 표시장치 및 이의 구동 방법
KR102278880B1 (ko) * 2014-11-14 2021-07-20 삼성디스플레이 주식회사 백라이트 유닛, 이를 포함하는 표시 장치, 및 영상 표시 시스템
CN108538258B (zh) * 2017-03-06 2023-03-24 北京小米移动软件有限公司 调整背光电流的方法及装置、显示设备

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172415A (en) * 1990-06-08 1992-12-15 Fosgate James W Surround processor
JP2603952Y2 (ja) * 1992-12-03 2000-04-04 シャープ株式会社 表示装置
JP2001325824A (ja) * 2000-05-17 2001-11-22 Kyocera Corp 携帯用端末におけるバックライト用発光ダイオードの駆動回路
JP3438135B2 (ja) * 2000-05-19 2003-08-18 富士通株式会社 情報機器及び省電力モード切替方法及び省電力モード切替プログラムを格納した記録媒体
JP3971892B2 (ja) * 2000-09-08 2007-09-05 株式会社日立製作所 液晶表示装置
KR100685098B1 (ko) * 2001-08-30 2007-02-22 엘지전자 주식회사 노트북 컴퓨터에서의 램프구동방법
JP4167474B2 (ja) * 2002-11-07 2008-10-15 シャープ株式会社 液晶表示装置
JP4540605B2 (ja) * 2002-12-06 2010-09-08 シャープ株式会社 液晶表示装置
JP4299622B2 (ja) * 2003-09-24 2009-07-22 Ｎｅｃ液晶テクノロジー株式会社 液晶表示装置及び該液晶表示装置に用いられる駆動方法
KR100668083B1 (ko) * 2004-11-05 2007-01-11 삼성전자주식회사 백라이트 구동장치
CN100383837C (zh) * 2004-11-23 2008-04-23 亚洲光学股份有限公司 发光二极管驱动电路
JP2006189661A (ja) * 2005-01-06 2006-07-20 Toshiba Corp 画像表示装置及びその方法
WO2007007472A1 (ja) * 2005-07-07 2007-01-18 Sharp Kabushiki Kaisha 表示装置
US20070120807A1 (en) * 2005-11-28 2007-05-31 Shwang-Shi Bai Display system with high motion picture quality and luminance control thereof
KR101106561B1 (ko) * 2005-12-19 2012-01-19 엘지디스플레이 주식회사 액정표시장치의 구동회로 및 이를 포함하는 액정표시장치
WO2007072598A1 (ja) * 2005-12-22 2007-06-28 Sharp Kabushiki Kaisha 表示装置、受信装置及び表示装置の駆動方法
CN101021999B (zh) * 2006-02-15 2010-12-22 奇美电子股份有限公司 区域分割型显示器及其显示方法
TW200737070A (en) * 2006-02-23 2007-10-01 Powerdsine Ltd Voltage controlled backlight driver
US7948468B2 (en) * 2007-02-23 2011-05-24 The Regents Of The University Of Colorado Systems and methods for driving multiple solid-state light sources

Also Published As

Publication number Publication date
US20090109166A1 (en) 2009-04-30
CN101425278A (zh) 2009-05-06
KR20090043865A (ko) 2009-05-07
JP2009109974A (ja) 2009-05-21

Similar Documents

Publication Publication Date Title
JP5557431B2 (ja) 液晶表示装置
JP5690565B2 (ja) バックライトアセンブリ及びそれを有する表示装置
JP5229718B2 (ja) バックライトドライバ及びこれを含む液晶表示装置
US8963810B2 (en) LED display systems
US8963811B2 (en) LED display systems
EP2149871B1 (en) Display device having reduced waterfall noise
US8228286B2 (en) Display device having variable backlight and method driving the same
US8816954B2 (en) Display apparatus
KR102552439B1 (ko) 백라이트 유닛, 그것의 구동 방법 및 그것을 포함하는 표시 장치
CN102610195A (zh) 多信道pwm信号产生设备和方法及包括其的led系统
KR20100082996A (ko) 표시 장치
KR20170010212A (ko) 백라이트 유닛 및 백라이트 유닛을 포함하는 표시 장치
CN106910473A (zh) 背光单元
US20210090506A1 (en) Power supply and display device including the same
KR20160110749A (ko) 백라이트 유닛, 백라이트 유닛을 포함하는 표시 장치 및 백라이트 유닛의 동작 방법
KR20080033001A (ko) 백라이트 유닛 및 이를 구비하는 액정 표시 장치
KR101878175B1 (ko) Ｄｃ-ｄｃ 컨버터 및 그 제어방법과 이를 이용한 표시장치
US9504107B2 (en) Backlight unit and display device having the same
US8674927B2 (en) Liquid crystal display and method of driving the same
CN111383607A (zh) 光源装置及包括光源装置的显示装置
KR20160083577A (ko) 표시장치
KR20150078846A (ko) 유기발광표시장치
KR20140079044A (ko) 전원 공급부 및 이를 이용한 평판 표시 장치
KR20150033213A (ko) 백 라이트 유닛과 이를 이용한 액정 표시장치 및 그의 구동방법
KR20140098367A (ko) 전원 공급부 및 이를 이용한 평판 표시 장치

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110602

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110602

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120509

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20121213

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130116

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130312

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130612

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140304

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140326

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140513

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140603

R150 Certificate of patent or registration of utility model

Ref document number: 5557431

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees