CN105068311A - 一种背光模组 - Google Patents

一种背光模组 Download PDF

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CN105068311A
CN105068311A CN201510460653.2A CN201510460653A CN105068311A CN 105068311 A CN105068311 A CN 105068311A CN 201510460653 A CN201510460653 A CN 201510460653A CN 105068311 A CN105068311 A CN 105068311A
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circuit board
flexible circuit
backlight module
module according
guide plate
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CN105068311B (zh
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葛明
谢沧益
葛军
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Dongguan East power fly Electronics Co.,Ltd.
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Shenzhen Kelimeng Electronics 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
    • 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
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133612Electrical details
    • 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
    • G02F1/133628Illuminating devices with cooling means

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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

本发明公开一种背光模组,包括:胶框、安装于胶框内的反光片、设于反光片上方的导光板、设于导光板上方的光学膜片组及设于导光板一侧与导光板配合的背光源组件,所述背光源组件包括:柔性线路板、设于柔性线路板上的LED灯以及将柔性线路板与导光板相贴合的双面胶,所述柔性线路板上相邻两LED灯之间设有若干通孔。本发明通过在柔性线路板上LED灯之间设有通孔,通过通孔快速将LED灯产生的热量传递出去;柔性线路板的表面涂覆有导热材料,以及柔性线路板背面贴合有散热垫,通过通孔及导热材料快速将热量传递至散热垫,并通过散热垫将热量散发出去,有效地降低了背光模组的温度,使高亮度背光源以及手机大屏幕化成为可能。

Description

一种背光模组
技术领域
本发明涉及液晶显示技术领域,尤其涉及一种背光模组。
背景技术
伴随着液晶显示行业的发展,液晶显示器、液晶显示模组在手机产品中得到广泛应用。但由于液晶本身不发光,为了让使用者看到液晶显示屏呈现的绚烂多彩的画面,液晶显示屏一般都必须和一个光源配合使用。由于液晶的特性,这个光源一般置于液晶显示屏的背部,行业内称之为背光模组。液晶显示器背光模组的主要作用是提供一个均匀的、稳定的、具有一定亮度的平面光源,其内部光源的核心光源通常为发光二极管(LED),经导光板和扩散片将LED光源发出的不均匀的点光源转换为均匀的面光源。
请参阅图1,在现有手机的背光模组中的LED光源都是由FPC(柔性电路板)100与多个LED灯200组成,之后通过双面胶300粘结固定。该双面胶300对应多个LED灯200的位置设有开孔400,如图2所示,贴合时候LED灯200容置于该些开孔400中,以达到最佳贴合。而,FPC一般的设计是最外层材料为PI(聚酰亚胺)膜,主要目的是绝缘,但是这会造成阻热的现象。另外,随着手机的屏幕越来越大以及为了产品效果,所需的背光源的亮度也越来越高,而提高背光源亮度的手段是提高额定电流,这样就容易造成背光模组产生高温,容易造成温度攀升到55-58度,进一步造成末端产品没办法设计。
因此,现有技术存在缺陷,需要改进。
发明内容
本发明的目的是克服现有技术的不足,提供一种背光模组。
本发明的技术方案如下:本发明提供一种背光模组,包括:胶框、安装于所述胶框内的反光片、设于所述反光片上方的导光板、设于所述导光板上方的光学膜片组及设于所述导光板一侧与所述导光板配合的背光源组件,所述背光源组件包括:柔性线路板、设于所述柔性线路板上的LED灯以及将所述柔性线路板与导光板相贴合的双面胶,所述柔性线路板上相邻两LED灯之间设有若干通孔。
所述柔性线路板表面涂覆有导热材料。
所述光学膜片组包括:设于所述导光板上方的扩散片、设于所述扩散片上方的下增光片以及设于所述下增光片上方的上增光片。
所述柔性线路板上相邻两LED灯之间设有的通孔的数量为6,所述6个通孔呈3×2分布。
所述通孔为焊盘孔。
所述背光模组还包括一散热垫,所述散热垫贴于所述柔性线路板的背面。
所述散热垫呈“口”字形,所述散热垫包括:第一横部、第二横部、一端与所述第一横部一端连接且另一端与所述第二横部一端连接的第一竖部、以及一端与所述第一横部另一端连接且另一端与所述第二横部另一端连接的第二竖部,所述第一横部与所述柔性线路板对齐。
所述散热垫为一石墨片。
所述双面胶呈梳状,所述双面胶包括:梳体部以及设于所述梳体部上的若干梳齿。
所述若干梳齿等距离分布。
采用上述方案,本发明的背光模组,通过在柔性线路板上LED灯之间设有通孔,通过通孔快速将LED灯产生的热量传递出去;进一步地,柔性线路板的表面涂覆有导热材料,以及柔性线路板背面贴合有散热垫,通过通孔及导热材料快速将热量传递至散热垫,并通过散热垫将热量散发出去,有效地降低了背光模组的温度,使高亮度背光源以及手机大屏幕化成为可能;另外,双面胶结构进行避空位设计,呈梳状,降低了厚度增加沾粘面积,并且让光能量尽量贴近导入导光板,有利于提升背光模组亮度,减少厚度的浪费。
附图说明
图1为现有技术中柔性线路板与LED灯的结构示意图。
图2为现有技术中双面胶的结构示意图。
图3为本发明背光模组的结构示意图。
图4为本发明中柔性线路板与LED灯的结构示意图。
图5为图4中A处的放大示意图。
图6为本发明中双面胶的结构示意图。
图7为本发明中散热垫的结构示意图。
具体实施方式
以下结合附图和具体实施例,对本发明进行详细说明。
请参阅图3至图5,本发明提供一种背光模组,可以快速将热量散发出去,有效地解决了现有技术的背光模组中热的传导和散热的问题。其具体包括:胶框2、安装于所述胶框2内的反光片、设于所述反光片上方的导光板、设于所述导光板上方的光学膜片组4及设于所述导光板一侧与所述导光板配合的背光源组件6,所述光学膜片组4包括:设于所述导光板上方的扩散片、设于所述扩散片上方的下增光片以及设于所述下增光片上方的上增光片。所述背光源组件6包括:柔性线路板62、设于所述柔性线路板62上的LED灯64以及将所述柔性线路板62与导光板相贴合的双面胶66,所述柔性线路板62上相邻两LED灯64之间设有若干通孔68,通过该若干通孔68快速将LED灯64产生的热量传递出去。
在本实施例中,所述通孔68可以为焊盘孔,这样,该若干通孔68就可以与柔性线路板62上专门用来焊接导线的焊盘孔同时形成,无需再另外单独加工,制作工艺简单,有利于成本的管控。
在本实施例中,所述柔性线路板62上相邻两LED灯64之间设有的通孔68的数量为6,优选的,所述6个通孔68呈3×2分布。
应当说明的是:所述背光模组还包括一散热垫8,所述散热垫8贴于所述柔性线路板62的背面,LED灯64焊接于所述柔性线路板62的正面。LED灯64发出的热量透过该若干通孔68传递至散热垫8上,利用该散热垫8将热量快速散发出去,有效地降低了背光模组的温度,使高亮度背光源以及手机大屏幕化成为可能。
应当说明的是:在本实施例中,所述散热垫8优选呈“口”字形,如图7所示。具体的,所述散热垫8包括:第一横部82、第二横部84、一端与所述第一横部82一端连接且另一端与所述第二横部84一端连接的第一竖部86、以及一端与所述第一横部82另一端连接且另一端与所述第二横部84另一端连接的第二竖部88,所述第一横部82与所述柔性线路板62对齐,也即是,散热垫8上只有第一横部82与柔性线路板62贴合。应当进一步说明的是:在本实施例中,所述散热垫8为一石墨片。
进一步地,请参阅图6,所述双面胶66呈梳状,所述双面胶66包括:梳体部63以及设于所述梳体部63上的若干梳齿65。本发明发明采用双面胶进行了避空位设计,呈梳状,降低了厚度增加沾粘面积,并且让光能量尽量贴近导入导光板,有利于提升背光模组亮度,减少厚度的浪费。优选的,所述若干梳齿65等距离分布。
作为可供选择的,为了进一步提升该背光模组的导热速度,所述柔性线路板表面可以涂覆有导热材料。通过导热材料与通孔配合,热量传递速度可以进一步提升,保证LED灯产生的热量快速传递出去。
综上所述,本发明提供一种背光模组,通过在柔性线路板上LED灯之间设有通孔,通过通孔快速将LED灯产生的热量传递出去;进一步地,柔性线路板的表面涂覆有导热材料,以及柔性线路板背面贴合有散热垫,通过通孔及导热材料快速将热量传递至散热垫,并通过散热垫将热量散发出去,有效地降低了背光模组的温度,使高亮度背光源以及手机大屏幕化成为可能;另外,双面胶结构进行避空位设计,呈梳状,降低了厚度增加沾粘面积,并且让光能量尽量贴近导入导光板,有利于提升背光模组亮度,减少厚度的浪费。
以上仅为本发明的较佳实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (10)

1.一种背光模组,其特征在于,包括:胶框、安装于所述胶框内的反光片、设于所述反光片上方的导光板、设于所述导光板上方的光学膜片组及设于所述导光板一侧与所述导光板配合的背光源组件,所述背光源组件包括:柔性线路板、设于所述柔性线路板上的LED灯以及将所述柔性线路板与导光板相贴合的双面胶,所述柔性线路板上相邻两LED灯之间设有若干通孔。
2.根据权利要求1所述的背光模组,其特征在于,所述柔性线路板表面涂覆有导热材料。
3.根据权利要求1所述的背光模组,其特征在于,所述光学膜片组包括:设于所述导光板上方的扩散片、设于所述扩散片上方的下增光片以及设于所述下增光片上方的上增光片。
4.根据权利要求1所述的背光模组,其特征在于,所述柔性线路板上相邻两LED灯之间设有的通孔的数量为6,所述6个通孔呈3×2分布。
5.根据权利要求1所述的背光模组,其特征在于,所述通孔为焊盘孔。
6.根据权利要求1至5任一项所述的背光模组,其特征在于,还包括一散热垫,所述散热垫贴于所述柔性线路板的背面。
7.根据权利要求6所述的背光模组,其特征在于,所述散热垫呈“口”字形,所述散热垫包括:第一横部、第二横部、一端与所述第一横部一端连接且另一端与所述第二横部一端连接的第一竖部、以及一端与所述第一横部另一端连接且另一端与所述第二横部另一端连接的第二竖部,所述第一横部与所述柔性线路板对齐。
8.根据权利要求6所述的背光模组,其特征在于,所述散热垫为一石墨片。
9.根据权利要求1至5任一项所述的背光模组,其特征在于,所述双面胶呈梳状,所述双面胶包括:梳体部以及设于所述梳体部上的若干梳齿。
10.根据权利要求9所述的背光模组,其特征在于,所述若干梳齿等距离分布。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019706A (zh) * 2016-06-17 2016-10-12 武汉华星光电技术有限公司 背光灯源、背光模组及显示器

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