JP5357016B2 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- JP5357016B2 JP5357016B2 JP2009513066A JP2009513066A JP5357016B2 JP 5357016 B2 JP5357016 B2 JP 5357016B2 JP 2009513066 A JP2009513066 A JP 2009513066A JP 2009513066 A JP2009513066 A JP 2009513066A JP 5357016 B2 JP5357016 B2 JP 5357016B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- region
- crystal display
- light
- polarizing plate
- 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
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- 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
- G02F1/133528—Polarisers
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133601—Illuminating devices for spatial active dimming
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- 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
- G02F2203/00—Function characteristic
- G02F2203/60—Temperature independent
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
尚、本願発明に関連する先行技術として、特許文献1及び2が存在する。
20,30 LEDバックライトユニット
21,31 LEDランプ
22,32 導光板
23,33 反射板
24,34 拡散板
40 ランプ駆動制御部
42 温度センサー
Claims (4)
- 液晶パネルと、前記液晶パネルに付着される偏光板と、前記偏光板が付着された前記液晶パネルの後方に位置し、複数のLEDからなるLEDランプを使用するバックライトユニットと、を含む液晶表示装置において、
前記偏光板の脆弱部分を通して光が透過される際に光漏れが生ずる現象である砂時計現象を感知するように前記偏光板の表面に設置される温度センサーと;
前記温度センサーと信号交換可能に連結され、前記温度センサーから砂時計現象感知信号を受信すると、前記LEDランプの所定領域の輝度を調節するランプ駆動制御部と;を含み、
前記温度センサーは、前記偏光板の砂時計現象が発生する領域の表面に設置されることを特徴とする液晶表示装置。 - 前記ランプ駆動制御部は、砂時計現象感知信号が受信されたとき、前記LEDランプの所定領域の輝度を、砂時計現象感知信号が受信されないときより15〜20%低く調節することを特徴とする請求項1に記載の液晶表示装置。
- 前記ランプ駆動制御部が輝度を調節する前記LEDランプの所定領域は、
前記偏光板の砂時計現象が発生する領域に対面する領域であることを特徴とする請求項1に記載の液晶表示装置。 - 前記ランプ駆動制御部が輝度を調節する前記LEDランプの所定領域は、
前記LEDランプの左右中心線から左右側面方向に75〜100%に該当するLED領域である第1領域と、前記LEDランプの上下中心線から上下側面方向に50〜100%に該当するLED領域である第2領域と、を含み、前記第1領域と前記第2領域との重複領域は含まないことを特徴とする請求項1に記載の液晶表示装置。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0053997 | 2006-06-15 | ||
KR1020060053997A KR100743540B1 (ko) | 2006-06-15 | 2006-06-15 | 액정표시장치 |
KR10-2006-0053999 | 2006-06-15 | ||
KR1020060053999A KR100797528B1 (ko) | 2006-06-15 | 2006-06-15 | 액정표시장치 |
PCT/KR2007/002869 WO2007145470A1 (en) | 2006-06-15 | 2007-06-14 | Liquid crystal display |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013143615A Division JP2013257572A (ja) | 2006-06-15 | 2013-07-09 | 液晶表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009538457A JP2009538457A (ja) | 2009-11-05 |
JP5357016B2 true JP5357016B2 (ja) | 2013-12-04 |
Family
ID=38831941
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009513066A Expired - Fee Related JP5357016B2 (ja) | 2006-06-15 | 2007-06-14 | 液晶表示装置 |
JP2013143615A Pending JP2013257572A (ja) | 2006-06-15 | 2013-07-09 | 液晶表示装置 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013143615A Pending JP2013257572A (ja) | 2006-06-15 | 2013-07-09 | 液晶表示装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7787075B2 (ja) |
EP (1) | EP2035887A4 (ja) |
JP (2) | JP5357016B2 (ja) |
CN (1) | CN103984151A (ja) |
WO (1) | WO2007145470A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102453566B1 (ko) * | 2015-06-01 | 2022-10-13 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
JP6333899B2 (ja) | 2015-11-09 | 2018-05-30 | インディアン オイル コーポレーション リミテッド | コークス化されたアップグレーディング剤の再生を介する高品質合成ガスの製造方法 |
CN111505862A (zh) * | 2019-01-31 | 2020-08-07 | 北京小米移动软件有限公司 | 液晶显示屏和终端 |
KR102651588B1 (ko) * | 2019-04-17 | 2024-03-27 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 구동 방법 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5667289A (en) * | 1989-05-18 | 1997-09-16 | Seiko Epson Corporation | Background lighting apparatus for liquid crystal display |
JP3773123B2 (ja) * | 1995-03-07 | 2006-05-10 | カシオ計算機株式会社 | 照明装置 |
JPH11133427A (ja) * | 1997-10-30 | 1999-05-21 | Matsushita Electric Ind Co Ltd | 液晶表示装置 |
JP4355977B2 (ja) * | 1999-11-12 | 2009-11-04 | ソニー株式会社 | 映像表示装置および映像表示装置における照明制御方法 |
JP2001215464A (ja) * | 2000-02-02 | 2001-08-10 | Sharp Corp | 液晶表示装置 |
KR100710281B1 (ko) * | 2000-09-08 | 2007-04-23 | 엘지.필립스 엘시디 주식회사 | 광 반사 확산판과 그를 이용한 액정표시모듈 |
JP3523170B2 (ja) * | 2000-09-21 | 2004-04-26 | 株式会社東芝 | 表示装置 |
JP3889239B2 (ja) * | 2001-04-18 | 2007-03-07 | 東京特殊電線株式会社 | 液晶表示装置の輝度制御方法、輝度制御装置および液晶表示装置 |
JP4711541B2 (ja) * | 2001-05-18 | 2011-06-29 | 京セラ株式会社 | 照明パネル、液晶表示装置および携帯端末または表示機器 |
JP2003043440A (ja) * | 2001-07-26 | 2003-02-13 | Toshiba Corp | 液晶投射型表示装置 |
JP2003167120A (ja) * | 2001-09-20 | 2003-06-13 | Sumitomo Chem Co Ltd | 複合偏光板及びそれを配置した表示装置 |
JP4402336B2 (ja) * | 2002-06-26 | 2010-01-20 | 三菱電機株式会社 | 面状光源装置及びそれを用いた液晶表示装置 |
JP2004246117A (ja) * | 2003-02-14 | 2004-09-02 | Matsushita Electric Ind Co Ltd | バックライト装置 |
KR200319158Y1 (ko) * | 2003-03-25 | 2003-07-04 | 비오이 하이디스 테크놀로지 주식회사 | 액정표시장치 |
JP4628770B2 (ja) * | 2004-02-09 | 2011-02-09 | 株式会社日立製作所 | 照明装置を備えた画像表示装置及び画像表示方法 |
WO2005096045A2 (en) * | 2004-03-23 | 2005-10-13 | E.I. Dupont De Nemours And Company | Light guide and apparatus for using light guide |
JP4894149B2 (ja) * | 2005-03-07 | 2012-03-14 | パナソニック株式会社 | 液晶表示装置 |
DE502005000735D1 (de) * | 2005-03-10 | 2007-06-28 | Nanogate Advanced Materials Gmbh | Flachbildschirm |
-
2007
- 2007-06-14 CN CN201410154373.4A patent/CN103984151A/zh active Pending
- 2007-06-14 WO PCT/KR2007/002869 patent/WO2007145470A1/en active Application Filing
- 2007-06-14 EP EP07746907A patent/EP2035887A4/en not_active Withdrawn
- 2007-06-14 US US11/762,992 patent/US7787075B2/en not_active Expired - Fee Related
- 2007-06-14 JP JP2009513066A patent/JP5357016B2/ja not_active Expired - Fee Related
-
2013
- 2013-07-09 JP JP2013143615A patent/JP2013257572A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US20080002114A1 (en) | 2008-01-03 |
JP2009538457A (ja) | 2009-11-05 |
CN103984151A (zh) | 2014-08-13 |
JP2013257572A (ja) | 2013-12-26 |
EP2035887A4 (en) | 2011-03-30 |
US7787075B2 (en) | 2010-08-31 |
WO2007145470A1 (en) | 2007-12-21 |
EP2035887A1 (en) | 2009-03-18 |
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