CN108061987A - 一种背光模组和移动终端 - Google Patents

一种背光模组和移动终端 Download PDF

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CN108061987A
CN108061987A CN201711322668.8A CN201711322668A CN108061987A CN 108061987 A CN108061987 A CN 108061987A CN 201711322668 A CN201711322668 A CN 201711322668A CN 108061987 A CN108061987 A CN 108061987A
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light
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CN108061987B (zh
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谢祥
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Vivo Mobile Communication Co Ltd
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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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073Light emitting diode [LED]
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086Positioning aspects
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086Positioning aspects
    • G02B6/009Positioning aspects of the light source in the package
    • 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
    • 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
    • G02F1/133605Direct backlight including specially adapted 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
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members

Abstract

本发明实施例提供了一种背光模组,包括:柔性电路板FPC,与所述FPC的底面连接并具有多个镂空区域的灯胶、与所述FPC的底面连接并设置于所述多个镂空区域内的多个光源,设置于所述FPC的底面之下并相对所述多个光源的出光面设置的导光板;所述灯胶在朝向所述光源的出光面的区域具有连通所述多个镂空区域的多个开口;所述导光板包括:平板部,以及与设置在所述平面部靠近所述光源的区域之上并设置于所述多个开口之中的多个楔形部。本发明实施例由于光线的出射角与入射角没有发生改变,因而不会导致光线从导光板靠近光源的区域集中射出导光板,使得背光不均匀而产生的hotspot问题,从而可以降低导光板网点调试难度。

Description

一种背光模组和移动终端
技术领域
本发明涉及电子产品技术领域,特别是涉及一种背光模组和一种移动终端。
背景技术
如今电子产品,正在向着轻薄短小的方向发展。为此,电子产品的各种零组件也在向小型化发展。作为智能手机的核心部件之一的液晶显示屏组件的厚度超薄追求上也随之越走越极致。
作为液晶显示屏组件之一的背光组件也随着变的更薄,其中导光板的厚度也是越来越薄。
由于导光板的厚度越来越薄,导致导光板的导光效率随之下降,使得背光亮度下降。为提升背光亮度,目前跟灯胶有关的改善设计,将灯胶从如图1所示由口字型改善为如图2所示的开口型。
开口型灯胶是在口字型灯胶靠近导光板的侧边上设置开口形成,如图3为采用开口型灯胶的背光模组的剖面图。现有的这种采用开口型灯胶的背光模组容易出现光斑不良的hotspot(萤火虫光斑现象)问题,加大对导光板网点调试难度。并且光线a从空气中传播时,能量会在空气中损耗,影响背光亮度。
发明内容
鉴于上述问题,提出了本发明实施例的一种背光模组和移动终端,以解导光板中出现光斑不良的hotspot问题。
为了解决上述问题,本发明实施例公开了一种背光模组,包括:
柔性电路板FPC,与所述FPC的底面连接并具有多个镂空区域的灯胶、与所述FPC的底面连接并设置于所述多个镂空区域内的多个光源,设置于所述FPC的底面之下并相对所述多个光源的出光面设置的导光板;
所述灯胶在朝向所述光源的出光面的区域具有连通所述多个镂空区域的多个开口;
所述导光板包括:平板部,以及与设置在所述平面部靠近所述光源的区域之上并设置于所述多个开口之中的多个楔形部。
本发明实施例还公开了一种移动终端,包括如上所述的背光模组。
本发明实施例包括以下优点:
在本发明实施例中,在导光板的平板部靠近光源的区域的上方设置有楔形部,从光源的出光面射出的一部分光线,可以从楔形部靠近光源的侧面入射到楔形部。由于平板部和楔形部是同一材质的导光板材料,从楔形部出射的光线可以沿原来的传播方向进入平板部。由于光线的出射角与入射角没有改变,因而不会导致光线从导光板靠近光源的区域集中射出导光板,使得背光不均匀而产生的hotspot问题,从而可以降低导光板网点调试难度。
附图说明
图1是现有的口字型灯胶的示意图;
图2是现有的开口型灯胶的示意图;
图3是现有的采用开口型灯胶的背光模组的剖面图;
图4是本发明的一种背光模组实施例的剖面图;
图5是本发明实施例中背光模组的示意图。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂,下面结合附图和具体实施方式对本发明作进一步详细的说明。
参照图4,示出了本发明的一种背光模组实施例的剖面图,具体可以包括:
柔性电路板FPC(Flexible Printed Circuit)20,与所述FPC20的底面连接并具有多个镂空区域的灯胶21、与所述FPC20的底面连接并设置于所述多个镂空区域内的多个光源22,设置于所述FPC的底面之下并相对所述多个光源22的出光面设置的导光板23;
所述灯胶21在朝向所述光源23的出光面的区域,具有连通所述多个镂空区域的多个开口;
所述导光板23包括:平板部231,以及设置在所述平面部231靠近所述光源的区域之上并设置于所述多个开口之中的多个楔形部232。
参照图5所示为本发明实施例中背光模组的示意图。在本发明实施例中,灯胶21具有多个镂空区域,镂空区域可以为矩形,并且灯胶21朝向光源23的出光面的区域具有连通多个镂空区域的多个开口,形成开口型的灯胶结构。在开口型灯胶的基础上,导光板23在每个开口的区域都设置有楔形部232,通过增加楔形部232以减少FPC20与导光板23之间的空隙。
在本发明实施例中,在导光板23的平板部231靠近光源22的区域的上方设置有楔形部232,从光源22的出光面射出的一部分光线a,可以从楔形部232靠近光源的侧面入射到楔形部232。由于平板部231和楔形部232是同一材质的导光板材料,从楔形部232出射的光线a可以沿原来的传播方向进入平板部231。由于光线a的出射角与入射角没有改变,因此光线a不会在平板部231靠近光源的区域多次反射,并且光线a能传播到传输到平面部231远离光源的区域。
本发明实施例可以解决现有技术中,在光线a从空气入射到导光板后,由于光线a的出射角与入射角发生改变,使得光线a在导光板靠近光源的区域多次反射,导致光线a从导光板靠近光源的区域集中射出导光板,使得背光不均匀而产生的hotspot问题,从而可以降低导光板网点调试难度。
在本发明实施例中,所述光源22可以为LED光源。
在本发明实施例中,所述楔形部232靠近所述光源22的侧面的顶边与所述光源22的顶面平行。
从光源22射出的光都可以经空气,从楔形部232靠近光源22的侧面或平板部231靠近光源22的侧面进入导光板23,避免了光线经空气从导光板的顶面入射的情况,减少了光线在空气中传输的距离,降低了能量损耗,有效提升进入导光板的光线能力。
在本发明实施例中,所述FPC20相对所述导光板23的区域朝下弯折,形成弯折部201;所述楔形部231的顶面从靠近所述光源22的侧面的顶边起,向下倾斜;所述楔形部231的顶面与所述弯折部201的底面贴合连接。
也就是说,楔形部231的顶面从楔形部的入光面的顶边起向下倾斜,并且楔形部231的顶面与FPC20的弯折部201的底面贴合连接。
在本发明实施例中,所述楔形部232与所述光源22相邻的侧面,与所述平面部231与所述光源22相邻的侧面位于同一平面。
楔形部232与光源22相邻的侧面即楔形部232的入光面,平面部231与光源22相邻的侧面即平面部231的入光面,也就是说楔形部232的入光面与平面部231的入光面位于同一平面。
在本发明实施例中,所述的背光组件还可以包括:与所述灯胶21的底面连接的支架25。
支架25用于承托FPC20,支架25与FPC20之间通过灯胶21连接,一般而言灯胶21为黑色的胶带,可以更好的吸收不进入导光板的光线。
在本发明实施例中,所述的背光组件还可以包括:
覆盖在所述FPC20和所述支架25之上的遮光胶26。
遮光胶26可以为黑色胶带,遮光胶26可以防止光源22发出的光线,从FPC20与支架25之间泄漏。
在本发明实施例中,所述的背光组件还可以包括:
与所述支架25的底面以及所述导光板23的底面连接的反射膜27。
反射膜27可以将光源22发出的光线,以及从导光板23中漏出来的光线反射进导光板23中。
本发明还公开了一种移动终端,该移动终端包括背光模组;
该背光模组包括:
柔性电路板FPC,与所述FPC的底面连接并具有多个镂空区域的灯胶、与所述FPC的底面连接并位于所述多个镂空区域内的多个光源,位于所述FPC的底面之下并相对所述多个光源的出光面设置的导光板;
所述灯胶在朝向所述光源的出光面的区域,具有连通所述多个镂空区域的多个开口;
所述导光板包括:平板部,以及与设置在所述平面部靠近所述光源的区域之上并位于所述多个开口之中的多个楔形部。
在本发明实施例中,所述楔形部靠近所述光源的侧面的顶边与所述光源的顶面平行。
从光源射出的光都可以经空气,从楔形部靠近光源的侧面或平板部2靠近光源的侧面进入导光板,避免了光线经空气从导光板的顶面入射的情况,减少了光线在空气中传输的距离,降低了能量损耗,有效提升进入导光板的光线能力。
在本发明实施例中,所述楔形部的顶面从靠近所述光源的侧面的顶边起,向下倾斜;
所述FPC相对所述导光板的区域朝下弯折,形成弯折部;
所述楔形部的顶面与所述弯折部的底面贴合连接。
在本发明实施例中,所述楔形部与所述光源相邻的侧面,与所述平面部与所述光源相邻的侧面位于同一平面。
在本发明实施例中,背光模组还可以包括:
与所述灯胶的底面连接的支架。
支架用于承托FPC,支架与FPC之间通过灯胶连接,一般而言灯胶为黑色的胶带,可以更好的吸收不进入导光板的光线。
在本发明实施例中,背光模组还可以包括:
覆盖在所述FPC和所述支架之上的遮光胶。
遮光胶可以为黑色胶带,遮光胶可以防止光源发出的光线,从FPC与支架之间泄漏。
在本发明实施例中,背光模组还可以包括:
与所述支架的底面以及所述导光板的底面连接的反射膜。
反射膜可以将光源发出的光线,以及从导光板中漏出来的光线反射进导光板中。
在本发明实施例中,所述光源为LED。
在本发明实施例中,所述灯胶的镂空区域为矩形。
在本发明实施例中,在导光板的平板部靠近光源的区域的上方设置有楔形部,从光源的出光面射出的一部分光线,可以从楔形部靠近光源的侧面入射到楔形部。由于平板部和楔形部是同一材质的导光板材料,从楔形部出射的光线可以沿原来的传播方向进入平板部。由于光线的出射角与入射角没有改变,光线不会在平板部靠近光源的区域多次反射,使得光线能传播到传输到平面部远离光源的区域。
本发明实施例可以解决现有技术中,在光线从空气入射到导光板后,由于光线的出射角与入射角发生改变,使得光线在导光板靠近光源的区域多次反射,导致光线从导光板靠近光源的区域集中射出导光板,使得背光不均匀而产生的hotspot问题,从而可以降低导光板网点调试难度。
本说明书的各个实施例均采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似的部分相互参考即可。
尽管已描述了本发明实施例的优选实施例,但本领域内的技术人员一旦得知了基本的创造性概念,则可对这些实施例做出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明实施例范围的所有变更和修改。最后,还需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者终端设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者终端设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者终端设备中还存在另外的相同要素。
以上对本发明所提供的一种背光模组和一种移动终端,进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (10)

1.一种背光模组,其特征在于,包括:
柔性电路板FPC,与所述FPC的底面连接并具有多个镂空区域的灯胶、与所述FPC的底面连接并设置于所述多个镂空区域内的多个光源,设置于所述FPC的底面之下并相对所述多个光源的出光面设置的导光板;
所述灯胶在朝向所述光源的出光面的区域具有连通所述多个镂空区域的多个开口;
所述导光板包括:平板部,以及与设置在所述平面部靠近所述光源的区域之上并设置于所述多个开口之中的多个楔形部。
2.根据权利要求1所述的背光模组,其特征在于,
所述楔形部靠近所述光源的侧面的顶边与所述光源的顶面平行。
3.根据权利要求2所述的背光模组,其特征在于,
所述楔形部的顶面从靠近所述光源的侧面的顶边起,向下倾斜;
所述FPC相对所述导光板的区域朝下弯折,形成弯折部;
所述楔形部的顶面与所述弯折部的底面贴合连接。
4.根据权利要求1所述的背光模组,其特征在于,
所述楔形部与所述光源相邻的侧面,与所述平面部与所述光源相邻的侧面位于同一平面。
5.根据权利要求1所述的背光模组,其特征在于,还包括:
与所述灯胶的底面连接的支架。
6.根据权利要求5所述的背光模组,其特征在于,还包括:
覆盖在所述FPC和所述支架之上的遮光胶。
7.根据权利要求5所述的背光模组,其特征在于,还包括:
与所述支架的底面以及所述导光板的底面连接的反射膜。
8.根据权利要求1所述的背光模组,其特征在于,
所述光源为LED。
9.根据权利要求1所述的背光模组,其特征在于,
所述灯胶的镂空区域为矩形。
10.一种移动终端,其特征在于,包括根据权利要求1-9任一项所述的背光模组。
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