CN102865527B - 背光模组 - Google Patents

背光模组 Download PDF

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CN102865527B
CN102865527B CN201210395324.0A CN201210395324A CN102865527B CN 102865527 B CN102865527 B CN 102865527B CN 201210395324 A CN201210395324 A CN 201210395324A CN 102865527 B CN102865527 B CN 102865527B
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light guide
guide plate
backlight module
corner
plate
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CN102865527A (zh
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周革革
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to PCT/CN2012/083943 priority patent/WO2014059705A1/zh
Priority to US13/806,771 priority patent/US8834002B2/en
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    • 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
    • G02F1/133608Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314Back frames
    • 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
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322Mechanical guidance or alignment of LCD panel support components

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

Abstract

本发明提供一种背光模组,包括:背板、设于背板内的导光板、设于导光板一侧的灯条、设于导光板远离灯条侧的侧反射片及设于背板与导光板之间的四个角落件,所述角落件由橡胶材料制成,该角落件朝向导光板的表面为白色,所述侧反射片设于两个角落件之间,且该侧反射片的长度小于或等于两角落件之间的距离,进而实现侧反射片与角落件分离设置。本发明通过将侧反射片与用于定位该导光板的角落件分离设置,避免了现有技术中侧反射片与角落件之间产生的摩擦,导致导光板与侧反射片发生分离的现象,进而避免了背光模组由于导光板与侧反射片分离而导致的角落漏光,进而保证了背光模组的发光强度及光照均匀度,提升了背光模组的品质。

Description

背光模组
技术领域
本发明涉及液晶显示领域,尤其涉及一种具有防止角落漏光的背光模组。
背景技术
液晶显示装置(LCD,Liquid Crystal Display)具有机身薄、省电、无辐射等众多优点,得到了广泛的应用。现有市场上的液晶显示装置大部分为背光型液晶显示器,其包括液晶面板及背光模组(backlight module)。液晶面板的工作原理是在两片平行的玻璃当中放置液晶分子,两片玻璃中间有许多垂直和水平的细小电线,通过通电与否来控制液晶分子改变方向,将背光模组的光线折射出来产生画面。由于液晶面板本身不发光,需要借由背光模组提供的光源来正常显示影像,因此,背光模组成为液晶显示装置的关键零组件之一。背光模组依照光源入射位置的不同分成侧入式背光模组与直下式背光模组两种。直下式背光模组是将发光光源例如CCFL(Cold Cathode FluorescentLamp,阴极萤光灯管)或LED(Light Emitting Diode发光二极管)设置在液晶面板后方,直接形成面光源提供给液晶面板。而侧入式背光模组是将发光光源LED灯条(lightbar)设于液晶面板侧后方的背板边缘,LED灯条发出的光线从导光板一侧的入光面进入导光板,经反射和扩散后从导光板出光面出射,以形成面光源提供给液晶面板。
如图1所示,为现有LED背光模组的结构示意图,该背光模组包括:背板100、设于背板100一侧的LED灯条300及设于背板100上的导光板500,为方便组装及降低成本,所述导光板500依靠设于背板100四角的橡胶块700来定位,所述导光板500远离灯条300的一侧贴附有侧反射片900以反射光线进导光板500内,进而提高光线利用率,所述侧反射片900设于导光板500与橡胶块700之间。当导光板500受到冷热温度变化影响时会发生胀缩,使侧反射片900与橡胶块700之间产生来回的摩擦,极易造成侧反射片900与导光板500在角落处分离,进而导致背光模组角落漏光。
发明内容
本发明的目的在于提供一种背光模组,其结构简单,可有效防止导光板上的侧反射片与导光板发生分离,以解决背光模组角落漏光的问题。
为实现上述目的,本发明提供一种背光模组,包括:背板、设于背板内的导光板、设于导光板一侧的灯条、设于导光板远离灯条侧的侧反射片及设于背板与导光板之间的四个角落件,所述角落件由橡胶材料制成,该角落件朝向导光板的表面为白色,所述侧反射片设于两个角落件之间,且该侧反射片的长度小于或等于两角落件之间的距离,进而实现侧反射片与角落件分离设置。
所述角落件由白色橡胶材料制成。
所述背板包括底板及连接于该底板上的侧板,所述两相邻侧板的连接处形成一角落,所述角落件设于该角落处。
所述灯条为线性LED灯条,该灯条设于所述背板的侧板上。
所述角落件呈“L”形设置。
本发明还提供一种背光模组,包括:背板、设于背板内的导光板、设于导光板一侧的灯条、设于导光板远离灯条侧的侧反射片及设于背板与导光板之间的四个角落件,所述侧反射片与角落件之间设有防摩擦块,进而实现侧反射片与角落件分离设置。
所述角落件由橡胶材料制成。
所述背板包括底板及连接于该底板上的侧板,所述两相邻侧板的连接处形成一角落,所述角落件设于该角落处。
所述防摩擦块为光滑的片材。
所述角落件呈“L”形设置。
本发明的有益效果:本发明提供的背光模组,通过将侧反射片与用于定位该导光板的角落件不接触或不直接接触,避免了现有技术中侧反射片与角落件之间产生的摩擦,导致导光板与侧反射片发生分离的现象,进而避免了背光模组由于导光板与侧反射片分离而导致的角落漏光,进而保证了背光模组的发光强度及光照均匀度,提升了背光模组的品质。
为了能更进一步了解本发明的特征以及技术内容,请参阅以下有关本发明的详细说明与附图,然而附图仅提供参考与说明用,并非用来对本发明加以限制。
附图说明
下面结合附图,通过对本发明的具体实施方式详细描述,将使本发明的技术方案及其它有益效果显而易见。
附图中,
图1为现有LED背光模组的结构示意图;
图2为图1中A处的局部放大图;
图3为本发明背光模组一实施例的结构示意图;
图4为图3中B处的局部放大图;
图5为本发明背光模组的又一实施例的结构示意图;
图6为图5中C处的局部放大图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果,以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图3及图4,本发明提供一种背光模组,包括:背板2、设于背板2内的导光板4、设于导光板4一侧的灯条6、设于导光板4远离灯条6侧的侧反射片8及设于背板2与导光板4之间的四个角落件10。所述灯条6为线性LED灯条,其发出的光线进入导光板4,并在导光板4内传播,进而提供一光照均匀的面光源。
所述背板2包括底板22及连接于该底板22上的侧板24,所述两相邻侧板24的连接处形成一角落,所述角落件10呈“L”形设置,其分别设于对应的角落处,所述灯条6设于所述背板2的侧板24上,所述侧反射片8设于与灯条6相对的一侧,用于反射灯条6发出的光线,进而保证背光模组的光照强度。
所述角落件10用于定位导光板4,该些角落件10由橡胶材料制成,且该些角落件10朝向导光板4的表面为白色,优选的,该些角落件10由白色橡胶材料制成,所述侧反射片8设于两个角落件10之间,且该侧反射片8的长度小于或等于两角落件10之间的距离,优选的,该侧反射片8的长度等于两角落件10之间的距离。进而实现侧反射片8与角落件10分离设置,避免了现有技术中侧反射片与角落件之间产生的摩擦,导致导光板与侧反射片发生分离的现象,进而避免了背光模组由于导光板与侧反射片分离而导致的角落漏光,进而保证了背光模组的发光强度及光照均匀度,提升了背光模组的品质。
同时,由于角落件10朝向导光板4的表面为白色,其同样起到反射作用,进而保证灯条6发出光线的利用率,进一步保证背光模组的光照强度。
请参阅图5及图6,本发明还提供一种背光模组,包括:背板2、设于背板2内的导光板4、设于导光板4一侧的灯条6、设于导光板6远离灯条4侧的侧反射片8’、设于背板2与导光板4之间的四个角落件10及设于侧反射片8’与角落件10之间的防摩擦块18。该防摩擦块18为高光滑的片材,用于减小或消除侧反射片8’与角落件10之间的摩擦,避免现有技术中侧反射片与角落件之间产生的摩擦,导致导光板与侧反射片发生分离的现象,进而避免了背光模组由于导光板与侧反射片分离而导致的角落漏光,进而保证了背光模组的发光强度及光照均匀度,提升了背光模组的品质。
所述背板2包括底板22及连接于该底板22上的侧板24,所述两相邻侧板24的连接处形成一角落,所述角落件10由橡胶材料制成,优选的,所述角落件10有白色橡胶材料制成,呈“L”形设置,其分别设于对应的角落处,所述灯条6设于所述背板2的侧板24上,所述侧反射片8’设于与灯条6相对的一侧,用于反射灯条6发出的光线,进而保证背光模组的光照强度。
所述灯条4为线性LED灯条,该灯条4设于所述背板2的侧板24上,所述侧反射片8’设于与灯条6相对的一侧,用于反射灯条6发出的光线,进而保证背光模组的光照强度。
综上所述,本发明提供的背光模组,通过将侧反射片与用于定位该导光板的角落件不接触或不直接接触,避免了现有技术中侧反射片与角落件之间产生的摩擦,导致导光板与侧反射片发生分离的现象,进而避免了背光模组由于导光板与侧反射片分离而导致的角落漏光,进而保证了背光模组的发光强度及光照均匀度,提升了背光模组的品质。
以上所述,对于本领域的普通技术人员来说,可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形,而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (5)

1.一种背光模组,包括:背板、设于背板内的导光板、设于导光板一侧的灯条、设于导光板远离灯条侧的侧反射片及设于背板与导光板之间的四个角落件,其特征在于,所述角落件由橡胶材料制成,该角落件朝向导光板的表面为白色,所述侧反射片设于两个角落件之间,且该侧反射片的长度小于或等于两角落件之间的距离,进而实现侧反射片与角落件分离设置。
2.如权利要求1所述的背光模组,其特征在于,所述角落件由白色橡胶材料制成。
3.如权利要求1所述的背光模组,其特征在于,所述背板包括底板及连接于该底板上的侧板,两相邻侧板的连接处形成一角落,所述角落件设于该角落处。
4.如权利要求3所述的背光模组,其特征在于,所述灯条为线性LED灯条,该灯条设于所述背板的侧板上。
5.如权利要求3所述的背光模组,其特征在于,所述角落件呈“L”形设置。
CN201210395324.0A 2012-10-17 2012-10-17 背光模组 Active CN102865527B (zh)

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CN201210395324.0A CN102865527B (zh) 2012-10-17 2012-10-17 背光模组
PCT/CN2012/083943 WO2014059705A1 (zh) 2012-10-17 2012-11-02 背光模组
US13/806,771 US8834002B2 (en) 2012-10-17 2012-11-02 Backlight module with side reflector plate protection

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