CN100447634C - 直下式背光单元和液晶显示器 - Google Patents

直下式背光单元和液晶显示器 Download PDF

Info

Publication number
CN100447634C
CN100447634C CNB2006101154214A CN200610115421A CN100447634C CN 100447634 C CN100447634 C CN 100447634C CN B2006101154214 A CNB2006101154214 A CN B2006101154214A CN 200610115421 A CN200610115421 A CN 200610115421A CN 100447634 C CN100447634 C CN 100447634C
Authority
CN
China
Prior art keywords
liquid crystal
light
grating
luminescent device
crystal panel
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.)
Active
Application number
CNB2006101154214A
Other languages
English (en)
Other versions
CN1920642A (zh
Inventor
朴相务
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 Electronics Co Ltd
Original Assignee
Samsung Electronics 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 Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CN1920642A publication Critical patent/CN1920642A/zh
Application granted granted Critical
Publication of CN100447634C publication Critical patent/CN100447634C/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133621Illuminating devices providing coloured light
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Filters (AREA)

Abstract

本发明公开了一种直下式背光单元和一种使用该直下式背光单元的液晶面板。该背光单元包括:多个发光器件,以预定角设置在基底上;光栅,以不同的衍射角衍射来自发光器件的入射光,以将入射光分离成多条彩色光束。该背光单元和该液晶显示器包括以最佳角发光的直下式光源,以提供光栅最大效率的衍射,这能够实现彩色图像,而不使用滤色器。

Description

直下式背光单元和液晶显示器
本申请要求于2005年8月26日在韩国知识产权局提交的第10-2005-0078883号韩国专利申请的优先权,其公开通过引用全部包含于此。
技术领域
本发明涉及一种直下式背光单元和一种不包括滤色器的大尺寸液晶显示器。
背景技术
通常,液晶显示器(LCD)是用在笔记本计算机、台式计算机、LCD电视和移动通信终端中的平板显示器,不是通过本身而是通过接收来自外部源的光来形成图像的光接收装置,且除液晶面板之外还需要背光单元。背光单元安装在液晶显示器的后面,并用作光源以发光。
根据光源的布置,背光单元可分类为直下式背光单元或边光式背光单元,在直下式背光单元中,直接安装在液晶显示器下面的多个灯向液晶面板直接发光,在边光式背光单元中,安装在导光板(LGP)边缘处的灯发光且所述光被传输到液晶面板。
当使用滤色器以实现彩色图像时,光效率降低,且液晶显示器的制造成本增加。为了解决这个问题,已经提出了应用光栅而不使用滤色器以分离颜色的彩色图像形成技术。
图1示出了使用边光式背光单元的传统的液晶显示器。该液晶显示器包括光源10和将光从光源10引导至液晶面板30上的导光板15。冷阴极荧光灯(CCFL)用作光源,但是CCFL的颜色实现速率低,因此提供不了高品质图像,并不适合高分辨率的TV或监视器。导光板15成锥形以有效地引导从光源10发出的光,且均匀地分布光。
反射板20形成在导光板15的下面,以将从导光板15传输的光反射回导光板15。光栅23形成在导光板15的上表面上,以根据波长以不同的角度衍射入射的白光,以将白光分离。为了获得最大的衍射效率,以最佳的入射角使光入射是重要的,从而提高光效率。然而,难以精密地控制通过导光板15引导并入射在光栅23上的光的入射角。
从光栅23发射的彩色光通过圆柱微透镜阵列25会聚在液晶面板30上。光栅23衍射光,例如,以不同的衍射角衍射红光(R)、绿光(G)和蓝光(B),使得光入射在液晶面板30的相应像素上。液晶面板根据输入的图像信号通过导通和截止像素来控制彩色光,以形成彩色图像。扩散器35扩散通过液晶面板30形成的图像,以增大视角。
如上所述,在边光式背光单元中,难以控制光以最佳的入射角入射在光栅上。由于光通过导光板从一个方向向另一方向反射,所以不会确保光的均匀性。因此,液晶显示器的尺寸受到限制。
发明内容
本发明提供了一种具有光源的背光单元和一种不包括滤色器的大尺寸液晶显示器,该背光单元使得光以光栅的衍射效率可最大时的入射角入射在光栅上。
根据本发明的一方面,提供了一种直下式背光单元,该背光单元包括:多个发光器件,在基底上以预定角倾斜;光栅,以不同的衍射角衍射来自发光器件的入射光,以将入射光分离成多条彩色光束。
发光器件可以是发光二极管。
背光单元还可包括布置在基底上并具有以预定角倾斜的安装表面的安装单元,发光器件可安装在安装表面上。
根据本发明的另一方面,提供了一种实现彩色图像而不使用滤色器的液晶显示装置,该液晶显示装置包括:液晶面板,形成彩色图像;直下式背光单元,设置在液晶面板的下面,包括在基底上以预定角倾斜的多个发光器件和光栅,所述光栅以不同的衍射角衍射来自发光器件的入射光,以将入射光分离成多条彩色光束。
附图说明
通过结合附图详细描述本发明的示例性实施例,本发明的以上和其他特征及优点将变得更加清楚,其中:
图1是具有边光式背光单元而没有滤色器的传统的液晶显示器;
图2是根据本发明示例性实施例的具有直下式背光单元而没有滤色器的液晶显示器。
具体实施方式
参照图2,根据本发明示出性、非限制性实施例的背光单元包括:直下式发光器件105,设置在液晶面板130的下面;光栅123,根据波长以不同的角度衍射来自发光器件105的入射光。
发光器件105以预定角α设置在基底100上,因此,从发光器件105发射的大部分光以预定角入射到光栅123。为了安装相对于基底100倾斜的发光器件105,具有安装表面110a的安装单元110形成在基底100上,发光器件105安装在安装表面110a上。因此,可实现具有发光器件的背光单元,所述发光器件发射以最佳入射角入射在光栅123上的受控制的光。
发光器件105可以是但不局限于发光二极管或激光二极管。例如,发光二极管可以是白色发光二极管或发射特定波段的光的多个彩色发光二极管。当使用多个彩色发光二极管时,来自各发光二极管的彩色光被混合以形成白光,白光入射在光栅123上。
光栅123根据波长以不同的衍射角衍射入射光,从而将入射光分离成多种颜色的光。由于衍射效率根据入射光的入射角变化,所以提供最大衍射效率的最佳入射角可根据光栅123的图案变化。调整发光器件105的预定角α,以获得最佳入射角。例如,入射角α可以是30°、40°或45°,虽然本发明并不局限于这些特定的示例。当发光器件105与基底100平行设置时,从发光器件105放射地发射的光以相对于光栅123对称的角度全部入射。因此,难以将从发光器件105发射的光以最佳入射角直接引导至光栅123上。然而,当发光器件105以预定角α相对于基底100倾斜时,从发光器件105发射的一部分光以与预定角α相等的入射角入射在光栅123上。
分离成多条彩色光束例如红光(R)、绿光(G)和蓝光(B)的光通过圆柱微透镜阵列125会聚到液晶面板130的像素上。液晶面板130根据输入的图像信号通过导通和截止像素来形成图像。因为液晶面板130的构造是公知的,所以为简便起见将省略对液晶面板130的构造的描述。
通过使用扩散器135将由液晶面板130形成的彩色图像扩散来确保视角。
根据本发明的液晶显示装置使用直下式背光单元而不使用滤色器实现了彩色图像。此外,由于光源布置使用直下式背光单元向大尺寸液晶显示器供应充足的光,且光源可均匀地布置在液晶面板的后面,所以可获得具有均匀亮度的大尺寸液晶面板。
如上所述,根据本发明的背光单元和液晶显示器包括以最佳角发光的直下式光源,以提供光栅最大效率的衍射,其中,所述光栅的光栅结构能够实现彩色图像,而不使用滤色器。因此,光可容易地进入光栅,提供了使用直下式背光单元的大尺寸液晶显示器。
尽管参照本发明的示例性实施例具体示出并描述了本发明,但是本领域技术人员应理解,在不脱离如权利要求限定的本发明的精神和范围的情况下,可对本发明作出形式上和细节上的各种改变。

Claims (8)

1、一种直下式背光单元,包括:
多个发光器件,在基底上以预定角倾斜;
光栅,以不同的衍射角衍射来自所述发光器件的入射光,以将所述入射光分离成多条彩色光束,
其中,所述预定角等于所述光栅的衍射效率最大时的入射光的入射角。
2、如权利要求1所述的背光单元,其中,所述发光器件包括发光二极管。
3、如权利要求1或2所述的背光单元,还包括布置在所述基底上并具有以预定角倾斜的安装表面的安装单元,其中,所述发光器件安装在所述安装表面上。
4、一种实现彩色图像而不使用滤色器的液晶显示装置,所述液晶显示装置包括:
液晶面板,形成彩色图像;
直下式背光单元,设置在所述液晶面板的下面,包括:
多个发光器件,在基底上以预定角倾斜;
光栅,以不同的衍射角衍射来自所述发光器件的入射光,以将所述入射光分离成多条彩色光束,
其中,所述预定角等于所述光栅的衍射效率最大时的入射光的入射角。
5、如权利要求4所述的液晶显示装置,其中,所述发光器件包括发光二极管。
6、如权利要求4或5所述的液晶显示装置,还包括布置在所述基底上并具有以预定角倾斜的安装表面的安装单元,其中,所述发光器件安装在所述安装表面上。
7、如权利要求4或5所述的液晶显示装置,还包括置于所述光栅和所述液晶面板之间的圆柱微透镜阵列,以将来自所述光栅的光会聚在所述液晶面板上。
8、如权利要求4或5所述的液晶显示装置,还包括将由所述液晶面板形成的彩色图像扩散的扩散器。
CNB2006101154214A 2005-08-26 2006-08-09 直下式背光单元和液晶显示器 Active CN100447634C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050078883 2005-08-26
KR1020050078883A KR20070024198A (ko) 2005-08-26 2005-08-26 직하형 백라이트 유닛 및 이를 채용한 액정 표시장치

Publications (2)

Publication Number Publication Date
CN1920642A CN1920642A (zh) 2007-02-28
CN100447634C true CN100447634C (zh) 2008-12-31

Family

ID=37056560

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006101154214A Active CN100447634C (zh) 2005-08-26 2006-08-09 直下式背光单元和液晶显示器

Country Status (6)

Country Link
US (1) US7659951B2 (zh)
EP (1) EP1757976B1 (zh)
JP (1) JP4907265B2 (zh)
KR (1) KR20070024198A (zh)
CN (1) CN100447634C (zh)
DE (1) DE602006015572D1 (zh)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100667817B1 (ko) * 2005-09-26 2007-01-11 삼성전자주식회사 직하발광형 백라이트 유닛 및 이를 적용한 칼라 필터를사용하지 않는 액정표시장치
JP4509913B2 (ja) * 2005-11-11 2010-07-21 昭和電工株式会社 面光源装置および表示装置
KR101380226B1 (ko) * 2007-07-05 2014-04-02 엘지디스플레이 주식회사 3차원 영상구현 액정표시장치
DE102007043904A1 (de) * 2007-09-14 2009-03-19 Osram Gesellschaft mit beschränkter Haftung Leucht-Vorrichtung
WO2010014624A2 (en) * 2008-07-28 2010-02-04 Pixel Qi Corporation Diffractive liquid crystal display
CN101676771B (zh) * 2008-09-17 2011-07-27 财团法人工业技术研究院 光学色彩分光系统及应用其的显示装置
TWI427322B (zh) 2009-12-10 2014-02-21 Ind Tech Res Inst 色彩分光系統
WO2011102335A1 (ja) * 2010-02-16 2011-08-25 シャープ株式会社 照明セット、照明装置、および表示装置
US8830426B2 (en) 2010-11-17 2014-09-09 Pixel Qi Corporation Color shift reduction in transflective liquid crystal displays
US8514352B2 (en) 2010-12-10 2013-08-20 Sharp Kabushiki Kaisha Phosphor-based display
US9201185B2 (en) * 2011-02-04 2015-12-01 Microsoft Technology Licensing, Llc Directional backlighting for display panels
JP5750581B2 (ja) * 2011-06-20 2015-07-22 パナソニックIpマネジメント株式会社 光照射装置
TWI504948B (zh) * 2011-10-21 2015-10-21 Hon Hai Prec Ind Co Ltd 導光板及發光裝置
US9354748B2 (en) 2012-02-13 2016-05-31 Microsoft Technology Licensing, Llc Optical stylus interaction
US9075566B2 (en) 2012-03-02 2015-07-07 Microsoft Technoogy Licensing, LLC Flexible hinge spine
US9134807B2 (en) 2012-03-02 2015-09-15 Microsoft Technology Licensing, Llc Pressure sensitive key normalization
US9426905B2 (en) 2012-03-02 2016-08-23 Microsoft Technology Licensing, Llc Connection device for computing devices
USRE48963E1 (en) 2012-03-02 2022-03-08 Microsoft Technology Licensing, Llc Connection device for computing devices
US9064654B2 (en) 2012-03-02 2015-06-23 Microsoft Technology Licensing, Llc Method of manufacturing an input device
US8873227B2 (en) 2012-03-02 2014-10-28 Microsoft Corporation Flexible hinge support layer
US9298236B2 (en) 2012-03-02 2016-03-29 Microsoft Technology Licensing, Llc Multi-stage power adapter configured to provide a first power level upon initial connection of the power adapter to the host device and a second power level thereafter upon notification from the host device to the power adapter
US9870066B2 (en) 2012-03-02 2018-01-16 Microsoft Technology Licensing, Llc Method of manufacturing an input device
US9360893B2 (en) 2012-03-02 2016-06-07 Microsoft Technology Licensing, Llc Input device writing surface
CN103365021B (zh) * 2012-04-03 2015-11-25 元太科技工业股份有限公司 可切换彩色模式与黑白模式的电泳显示装置
CN102661535B (zh) * 2012-04-13 2014-12-17 深圳市华星光电技术有限公司 直下式背光模组
US20130300590A1 (en) 2012-05-14 2013-11-14 Paul Henry Dietz Audio Feedback
US8947353B2 (en) 2012-06-12 2015-02-03 Microsoft Corporation Photosensor array gesture detection
US9459160B2 (en) 2012-06-13 2016-10-04 Microsoft Technology Licensing, Llc Input device sensor configuration
US9684382B2 (en) 2012-06-13 2017-06-20 Microsoft Technology Licensing, Llc Input device configuration having capacitive and pressure sensors
US9256089B2 (en) 2012-06-15 2016-02-09 Microsoft Technology Licensing, Llc Object-detecting backlight unit
US8964379B2 (en) 2012-08-20 2015-02-24 Microsoft Corporation Switchable magnetic lock
US8654030B1 (en) 2012-10-16 2014-02-18 Microsoft Corporation Antenna placement
WO2014059624A1 (en) 2012-10-17 2014-04-24 Microsoft Corporation Metal alloy injection molding protrusions
TWM465159U (zh) * 2013-01-18 2013-11-11 Amy Chih-Wei Chiu 輔助機構及具有輔助機構之輪椅
US10578499B2 (en) 2013-02-17 2020-03-03 Microsoft Technology Licensing, Llc Piezo-actuated virtual buttons for touch surfaces
US9448631B2 (en) 2013-12-31 2016-09-20 Microsoft Technology Licensing, Llc Input device haptics and pressure sensing
US9759854B2 (en) 2014-02-17 2017-09-12 Microsoft Technology Licensing, Llc Input device outer layer and backlighting
US10120420B2 (en) 2014-03-21 2018-11-06 Microsoft Technology Licensing, Llc Lockable display and techniques enabling use of lockable displays
US10324733B2 (en) 2014-07-30 2019-06-18 Microsoft Technology Licensing, Llc Shutdown notifications
US9424048B2 (en) 2014-09-15 2016-08-23 Microsoft Technology Licensing, Llc Inductive peripheral retention device
US10416799B2 (en) 2015-06-03 2019-09-17 Microsoft Technology Licensing, Llc Force sensing and inadvertent input control of an input device
US10222889B2 (en) 2015-06-03 2019-03-05 Microsoft Technology Licensing, Llc Force inputs and cursor control
US10061385B2 (en) 2016-01-22 2018-08-28 Microsoft Technology Licensing, Llc Haptic feedback for a touch input device
WO2017132579A1 (en) * 2016-01-30 2017-08-03 Leia Inc. Multibeam element-based backlighting having converging views
KR102654870B1 (ko) * 2016-11-09 2024-04-05 삼성전자주식회사 3차원 영상 디스플레이용 백라이트 유닛 및 그 제조방법
CN206541105U (zh) * 2017-03-20 2017-10-03 北京京东方显示技术有限公司 一种背光源及液晶显示装置
CN109471302B (zh) * 2018-12-25 2024-08-16 中航华东光电有限公司 一种具有视角偏转的底背光装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09230125A (ja) * 1996-02-21 1997-09-05 Dainippon Printing Co Ltd ホログラムカラーフィルター
US6351334B1 (en) * 2000-10-10 2002-02-26 Industrial Technology Research Institute Reflective diffraction grating for use in display devices
US20020167619A1 (en) * 2001-05-11 2002-11-14 Ibm Liquid crystal display
US20050041174A1 (en) * 2003-08-19 2005-02-24 International Business Machines Corporation Color filterless display device, optical element, and manufacture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269697A (en) * 1992-08-11 1994-02-16 Sharp Kk Display device
JPH09186825A (ja) 1996-01-08 1997-07-15 Canon Inc 照明装置およびこれを有する情報処理装置
WO1997026584A1 (en) * 1996-01-16 1997-07-24 Alliedsignal Inc. A color separating backlight
JPH10319217A (ja) 1997-05-22 1998-12-04 Omron Corp 色分離素子及び画像表示装置
KR100450542B1 (ko) * 1998-10-29 2004-10-01 가부시키가이샤 히타치세이사쿠쇼 조명 장치 및 이를 이용한 액정 표시 장치
JP2001312916A (ja) 2000-02-24 2001-11-09 Sony Corp 面光源装置
KR20040021178A (ko) 2002-09-03 2004-03-10 삼성전자주식회사 면 광원장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09230125A (ja) * 1996-02-21 1997-09-05 Dainippon Printing Co Ltd ホログラムカラーフィルター
US6351334B1 (en) * 2000-10-10 2002-02-26 Industrial Technology Research Institute Reflective diffraction grating for use in display devices
US20020167619A1 (en) * 2001-05-11 2002-11-14 Ibm Liquid crystal display
US20050041174A1 (en) * 2003-08-19 2005-02-24 International Business Machines Corporation Color filterless display device, optical element, and manufacture

Also Published As

Publication number Publication date
JP4907265B2 (ja) 2012-03-28
KR20070024198A (ko) 2007-03-02
EP1757976B1 (en) 2010-07-21
DE602006015572D1 (de) 2010-09-02
JP2007065658A (ja) 2007-03-15
US20070047221A1 (en) 2007-03-01
CN1920642A (zh) 2007-02-28
US7659951B2 (en) 2010-02-09
EP1757976A1 (en) 2007-02-28

Similar Documents

Publication Publication Date Title
CN100447634C (zh) 直下式背光单元和液晶显示器
KR100750130B1 (ko) 발광 어셈블리, 백라이트 유닛 및 디스플레이
JP5066572B2 (ja) バックライトユニット及びこれを備えた液晶表示装置
KR101113236B1 (ko) 다이나믹한 영상을 위한 백라이트 유닛 및 이를 채용한디스플레이 장치
JP4600257B2 (ja) 導光板、バックライト装置とその製造方法及び液晶表示装置
CN101514781B (zh) 背光单元
KR100619069B1 (ko) 멀티칩 발광 다이오드 유닛, 이를 채용한 백라이트 유닛 및액정 표시 장치
JP4350138B2 (ja) エッジ型バックライトユニット
CN1987593B (zh) 面状照明装置及以面状照明装置为背光源的液晶显示装置
US8049838B2 (en) Direct light type backlight unit and color filterless liquid crystal display apparatus employing the same
US8514347B2 (en) Backlight unit and liquid crystal display including the same
JP2004342587A (ja) バックライトおよびそれを用いた液晶表示装置
CN102200608A (zh) 导光板和背光单元
CN101175946A (zh) 背光装置、液晶显示装置和光偏转片
KR20130019250A (ko) 백라이트 유닛 및 이를 구비한 액정표시장치
KR20050121578A (ko) 백라이트 유닛
KR101413140B1 (ko) 불균일한 로컬 마이크로렌즈 어레이 패턴을 갖는 광확산판 및 이를 포함하는 액정표시장치
WO2011074410A1 (ja) 照明装置、表示装置、及びテレビ受信装置
KR102232058B1 (ko) 백라이트 유닛 및 이를 포함하는 액정표시장치 모듈
KR20050113419A (ko) 액정표시장치 백라이트 어셈블리
KR101080098B1 (ko) 디스플레이 패널을 백라이팅하기 위한 백라이트 패널
KR20060007486A (ko) 발광 다이오드 모듈 및 이를 구비한 액정표시장치
KR20080002157A (ko) 백라이트 어셈블리 및 이를 갖는 액정표시장치
KR20080037249A (ko) 백라이트 유닛 및 이를 구비하는 액정 표시 장치

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant