CN105842920A - 一种led背光模组 - Google Patents

一种led背光模组 Download PDF

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Publication number
CN105842920A
CN105842920A CN201610276311.XA CN201610276311A CN105842920A CN 105842920 A CN105842920 A CN 105842920A CN 201610276311 A CN201610276311 A CN 201610276311A CN 105842920 A CN105842920 A CN 105842920A
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China
Prior art keywords
led
heat
fin
conducting layer
substrate
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CN201610276311.XA
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English (en)
Inventor
王�华
黄映仪
黄灶星
谢文浩
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New Light Sources Re-Invent Industry Center Associating Guangdong Nanhai District Foshan City
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New Light Sources Re-Invent Industry Center Associating Guangdong Nanhai District Foshan City
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Priority to CN201610276311.XA priority Critical patent/CN105842920A/zh
Publication of CN105842920A publication Critical patent/CN105842920A/zh
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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
    • 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

一种LED背光模组,包括框架、基板、侧板、反光膜、导光板、扩散板以及设于导光板侧面的LED灯条,所述背光模组还包括散热组件,所述散热组件包括第一散热片、第二散热片、第一导热层和第二导热层,所述的第一散热片设于所述的基板上,所述的第二散热片设于LED灯条和侧板之间并于侧板可拆解连接。通过设置散热结构解决了热力集中导致导光材料受热膨胀的问题,并且延长了LED光源的使用寿命。

Description

一种LED背光模组
技术领域
本发明涉及显示屏背光领域,尤其涉及一种LED背光模组。
背景技术
液晶显示屏背光源一般包括光源、导光板、反射片和光学膜片构成,背光源发出的光线照射到液晶面板上,光线会先通过下偏振片向上透出,不同的液晶面板这个时候会按照自己的机理将光线转变偏振方向。接下来光线接触到彩色滤光片产生颜色,最后入射到上偏振片。在被液晶转变偏振方向后,有部分光线可以出射,有部分会被吸收。整个液晶面板上每一个像素都可以分别决定出射光线的强度,从而产生图像。
LED背光模组按照入射光源的方式,可分为直下式和侧光式,侧光式背光模组主要用于小尺寸显示,一般采用的导光材料是聚甲基丙烯酸甲酯,由于该类材料温度升高时而受热膨胀使背光模组通过的导光板和扩散片后发生差异使光分布不均或导致其辉度下降。
发明内容
本发明提供了一种LED背光模组,通过设置散热结构解决了上述问题,并且延长了LED光源的使用寿命。
本发明的技术方案为:一种LED背光模组,包括框架、基板、侧板、反光膜、导光板、扩散板以及设于导光板侧面的LED灯条,其特征在于,所述背光模组还包括散热组件,所述散热组件包括第一散热片、第二散热片、第一导热层和第二导热层,所述的第一散热片设于所述的基板上,所述的第二散热片设于LED灯条和侧板之间并于侧板可拆解连接。
优选地,所述第一导热层设于基板和反光膜之间,固定于基板并与该基板上的第一散热片贴合。
优选地,所述第二导热层设于连接于侧板的第二散热片和LED灯条之间。
优选地,所述第二散热片和第二导热层贴合连接。
优选地,所述第一导热层和第二层热层所使用的导热材料为硅胶。
优选地,所述导光板上表面均匀分布多个凹槽。凹槽作用主要是扩大导光板的入射角度,使边缘地带和其他区域一样能够均匀分布光度,使辉度统一。
优选地,所述导光板上表面均匀分布的多个凹槽为V型槽。
优选地,所述第一散热片和基板上均设有一一对应的散热孔。
有益效果:本发明通过设置散热片和导热层的设置能够改善导光板等材料由于受热膨胀的问题,另一方面还延长LED光源组件的使用寿命。
附图说明
图1是本发明的整体结构示意图
图2是本发明的第一散热片结构示意图
图3是本发明导光板上表面示意图。
具体实施方式
下面结合附图和具体实施例对本发明进行详细说明。
如图1所示,在本实例中,一种LED背光模组,包括框架、基板1、侧板2、反光膜3、导光板4、扩散板5以及设于导光板侧面的LED灯条6, LED背光模组还包括散热组件,散热组件包括第一散热片11、第二散热片21、第一导热层12和第二导热层22,第一散热片11设于基板1上,第二散热片21设于LED灯条6和侧板2之间并于侧板2可拆解连接。本发明中,过设置散热片和导热层的设置,能够将导光板的热量进行对外传导,实现散热,改善导光板等材料由于受热膨胀的问题,另一方面,还延长LED光源组件的使用寿命。
在本实例中,第一导热层12设于基板1和反光膜3之间,固定于基板并与该基板上的第一散热片贴合。
在本实例中,第二导热层22设于连接于侧板的第二散热片21和LED灯条6之间。
导热层的作用是能有效的将热能传导到散热片,从而使得散热效果更加优化。
在本实例中,第二散热片21和第二导热层22贴合连接。
在本实例中,第一导热层12和第二层热层22所使用的导热材料为硅胶。
在本实例中,第一散热片11和基板1上均设有一一对应的散热孔13。
在本实例中,导光板4上表面均匀分布多个凹槽41。
在本实例中,导光板4上表面均匀分布的多个凹槽41为V型槽。
以上描述是结合具体实施方式和附图对本发明所做的进一步说明。但是,本发明显然能够以多种不同于此描述的其它方法来实施,本领域技术人员可以在不违背本发明内容的情况下根据实际使用情况进行推广、演绎,因此,上述具体实施例的内容不应限制本发明确定的保护范围。

Claims (8)

1.一种LED背光模组,包括框架、基板、侧板、反光膜、导光板、扩散板以及设于导光板侧面的LED灯条,其特征在于,所述背光模组还包括散热组件,所述散热组件包括第一散热片、第二散热片、第一导热层和第二导热层,所述的第一散热片设于所述的基板上,所述的第二散热片设于LED灯条和侧板之间并与该侧板可拆解连接。
2.根据权利要求1所述一种LED背光模组,其特征在于,所述第一导热层设于基板和反光膜之间,固定于基板并与该基板上的第一散热片贴合。
3.根据权利要求1所述一种LED背光模组,其特征在于,所述第二导热层设于连接于侧板的第二散热片和LED灯条之间。
4.根据权利要求1所述一种LED背光模组,其特征在于,所述第二散热片和第二导热层贴合连接。
5.根据权利要求1所述一种LED背光模组,其特征在于,所述第一导热层和第二层热层所使用的导热材料为硅胶。
6.根据权利要求1所述一种LED背光模组,其特征在于,所述导光板上表面均匀分布多个凹槽。
7.根据权利要求1所述一种LED背光模组,其特征在于,所述导光板上表面均匀分布的多个凹槽为V型槽。
8.根据权利要求1所述一种LED背光模组,其特征在于,所述第一散热片和基板上均设有一一对应的散热孔。
CN201610276311.XA 2016-04-29 2016-04-29 一种led背光模组 Pending CN105842920A (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004101693A (ja) * 2002-09-06 2004-04-02 Taisei Laminator Co Ltd 光反射シートおよび光反射シートを用いた面状光源装置
CN202306066U (zh) * 2011-07-27 2012-07-04 青岛海信电器股份有限公司 一种液晶模组
CN202647441U (zh) * 2012-06-15 2013-01-02 Tcl光电科技(惠州)有限公司 背光模组和显示装置
CN203416557U (zh) * 2013-08-02 2014-01-29 昆山康佳电子有限公司 直下式led tv用散热片
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004101693A (ja) * 2002-09-06 2004-04-02 Taisei Laminator Co Ltd 光反射シートおよび光反射シートを用いた面状光源装置
CN202306066U (zh) * 2011-07-27 2012-07-04 青岛海信电器股份有限公司 一种液晶模组
CN202647441U (zh) * 2012-06-15 2013-01-02 Tcl光电科技(惠州)有限公司 背光模组和显示装置
CN203416557U (zh) * 2013-08-02 2014-01-29 昆山康佳电子有限公司 直下式led tv用散热片
CN203757525U (zh) * 2014-04-11 2014-08-06 合肥京东方显示光源有限公司 一种背光模组及显示装置
CN104832837A (zh) * 2015-04-29 2015-08-12 武汉华星光电技术有限公司 背光模组及显示器

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Application publication date: 20160810