CN108181761A - 显示器及其背光模组 - Google Patents

显示器及其背光模组 Download PDF

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CN108181761A
CN108181761A CN201711396378.8A CN201711396378A CN108181761A CN 108181761 A CN108181761 A CN 108181761A CN 201711396378 A CN201711396378 A CN 201711396378A CN 108181761 A CN108181761 A CN 108181761A
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bending part
backlight
backlight module
light guide
bending
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顾华
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology 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
    • G02F1/133608Direct backlight including particular frames or supporting means
    • 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
    • G02B6/0081Mechanical 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
    • G02B6/0085Means for removing heat created by the light source from the package
    • 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
    • G02B6/0088Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F1/133628Illuminating devices with cooling means

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

Abstract

本发明提供一种显示器及其背光模组,所述背光模组包括背光源、导光板及背框,所述背框包括底板、由所述底板一端弯折延伸出的第一折弯部及由所述第一折弯部弯折延伸出的第二折弯部,所述底板、第一折弯部及第二折弯部形成一U形的容置槽,所述背光源收容于所述容置槽中并与所述导光板的入光面相对设置,所述背光源与所述第一折弯部之间存在间隙。本发明提出的背光模组可以省略胶框,通过所述背光源与所述第一折弯部之间的间隙以及第一折弯部加快所述背光源的散热,背光源的另外两侧分别与底板、第二折弯部接触,通过底板、第二折弯部进一步加快所述背光源的散热,从而提升了背光源的散热效果、延长背光源的使用寿命、改善显示器的显示质量。

Description

显示器及其背光模组
技术领域
本发明涉及液晶显示技术领域,尤其涉及一种显示器及其背光模组。
背景技术
现有小尺寸背光通常采用胶框或铁塑一体件进行背光设计,LED放置及固定部位均为塑胶材质,在完全密封的结构当中,靠近LED发光区域film常常受热发生变形。LED通过胶框固定在导光板的一端,通常的做法是在背板的背面加贴一张石墨片,以加速LED工作时的热量散失,但是这种做法的实际散热效果却往往并不理想。
发明内容
为了解决现有技术的不足,本发明提供一种显示器及其背光模组,能够大大减低背光源的散热效果、延长背光源的使用寿命、改善显示器的显示质量。
本发明提出的具体技术方案为:提供一种背光模组,所述背光模组包括背光源、导光板及背框,所述背框包括底板、由所述底板一端弯折延伸出的第一折弯部及由所述第一折弯部弯折延伸出的第二折弯部,所述底板、第一折弯部及第二折弯部形成一U形的容置槽,所述背光源收容于所述容置槽中并与所述导光板的入光面相对设置,所述背光源与所述第一折弯部之间存在间隙。
进一步地,所述背光源包括电路板及间隔设置于所述电路板上的多个LED,所述电路板设于所述第二折弯部上,所述多个LED与所述导光板的入光面相对设置,所述多个LED与所述第一折弯部之间存在间隙。
进一步地,所述第二折弯部上设有多个通孔,所述多个通孔与所述多个LED一一对应,所述多个LED收容于所述容置槽中,所述电路板卡接于所述第二折弯部的表面。
进一步地,所述背框的材质为金属。
进一步地,每一个LED具有一接地引脚,所述接地引脚与所述背框电性接触。
进一步地,所述导光板与所述背光源相对的一端位于所述容置槽中。
进一步地,所述背框还包括由所述底板与所述第一折弯部相对的一端弯折延伸出的第三折弯部,所述第三折弯部与所述导光板的端部贴合。
进一步地,所述背光模组还包括反射层、光学膜片组及散热片,所述反射层设于所述导光板的底部并延伸至所述背光源的底部,所述光学膜片组设于所述导光板的顶部,所述散热片设于所述底板的底部。
进一步地,所述背光模组还包括设于所述容置槽中并位于所述背光源与所述第一折弯部之间的反射片,所述反射片包括垂直部和水平部,所述垂直部与所述第一折弯部的表面贴合,所述水平部与所述第二折弯部的表面贴合,所述背光源与所述垂直部之间存在间隙。
本发明还提供了一种显示器,所述显示器包括如上任一所述的背光模组。
本发明提出的背光模组的背框包括底板、第一折弯部及第二折弯部,所述底板、第一折弯部及第二折弯部形成一U形的容置槽,将所述背光源装设于所述容置槽中并使得所述背光源与所述第一折弯部之间存在间隙,这样可以省略胶框,通过所述背光源与所述第一折弯部之间的间隙以及第一折弯部加快所述背光源的散热,背光源的另外两侧分别与底板、第二折弯部接触,通过底板、第二折弯部进一步加快所述背光源的散热,从而提升了背光源的散热效果、延长背光源的使用寿命、改善显示器的显示质量。
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。
图1为显示器的结构示意图;
图2为背光源与第二折弯部的结构示意图;
图3为图2的仰视图;
图4为显示器的另一结构示意图;
图5为背光源与第二折弯部的另一结构示意图;
图6为显示器的又一结构示意图;
图7为背光源与第二折弯部的又一结构示意图。
具体实施方式
以下,将参照附图来详细描述本发明的实施例。然而,可以以许多不同的形式来实施本发明,并且本发明不应该被解释为限制于这里阐述的具体实施例。相反,提供这些实施例是为了解释本发明的原理及其实际应用,从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。在附图中,相同的标号将始终被用于表示相同的元件。
参照图1,本实施例提供的显示器包括背光模组1和显示面板2,背光模组1用于为显示面板2提供光源。显示面板2位于背光模组1的顶部。本实施例中的背光模组1为侧入式,背光模组1包括背光源11、导光板12及背框13,背框13包括底板131、由底板131一端弯折延伸出的第一折弯部132及由第一折弯部132弯折延伸出的第二折弯部133,底板131、第一折弯部132及第二折弯部133形成一U形的容置槽130,背光源11收容于容置槽130中并与导光板12的入光面120相对设置,背光源11与第一折弯部132之间存在间隙。
本实施例中的背框可以省略胶框,通过背光源11与第一折弯部132之间的间隙以及第一折弯部132可以加快背光源11的散热,背光源11的另外两侧分别与底板131、第二折弯部133接触,通过底板131、第二折弯部133进一步将背光源11的热量导出,加快背光源11的散热,从而提升了背光源11的散热效果、延长背光源11的使用寿命、改善显示器的显示质量。
底板131、第一折弯部132及第二折弯部133一体成型,第一折弯部132与底板131垂直,第二折弯部133与第一折弯部132垂直并与底板131平行。
结合图2、图3,背光源11包括电路板111及间隔设置于电路板111上的多个LED112,电路板111设于第二折弯部133上,多个LED 112与导光板12的入光面120相对设置,多个LED 112与第一折弯部132之间存在间隙。电路板111为柔性电路板,其设置于多个LED112的顶部并固定于第二弯折部133上。
第二折弯部133上设有多个通孔100,多个通孔100与多个LED 112一一对应,多个LED 112收容于容置槽130中,电路板111卡接于第二折弯部133的表面,即电路板111覆盖于第二弯折部133的顶部,多个LED 112穿过多个通孔100后收容于容置槽130中,这样便可以很好的对背光源11进行固定。其中,电路板111具有多个凸部(图未标),多个LED 112分别位于多个凸部上,多个凸部刚好卡设于多个通孔100中。
本实施例中的背框13的材质为金属,金属材质的散热速度比较快,从而可以提升背光源11的散热效率。
每一个LED 112均具有一接地引脚101,接地引脚101与背框13电性接触,由于背框13的材质为金属,将接地引脚101直接与背框13接触,从而实现将LED 112接地,防止LED112被静电击穿。
导光板12与背光源11相对的一端位于容置槽130中,导光板12的厚度小于容置槽130的开口大小,导光板12的一端可以插入容置槽130中并与背光源11相对设置,从而减小了背光模组1的厚度。
背框13还包括由底板131与第一折弯部132相对的一端弯折延伸出的第三折弯部134,第三折弯部134与导光板12的端部贴合,导光板12卡固于第三弯折部134与背光源11之间。
背光模组1还包括反射层14、光学膜片组15及散热片16,反射层14设于导光板12的底部并延伸至背光源11的底部,光学膜片组15设于导光板12的顶部,散热片16设于底板131的底部。反射层14用于将朝向反射层14入射的光线反射至导光板12中,散热片16用于将底板131上的热量导出,其中,散热片16为石墨散热片。
光学膜片组15包括扩散片151、下增亮膜152及上增亮膜153,下增亮膜152位于扩散片151与上增亮膜153之间,扩散片151位于导光板12与下增亮膜152之间。其中,上增亮膜153及下增亮膜152均为棱镜片。扩散片151的一端位于容置槽130中并夹设于导光板12与第二折弯部133之间。
背光模组1还包括设于容置槽130中并位于背光源11与第一折弯部132之间的反射片17,反射片17包括垂直部171和水平部172,垂直部171与第一折弯部132的表面贴合,水平部172与第二折弯部133的表面贴合,背光源11与垂直部171之间存在间隙,即反射片17呈倒“L”形,其用于将背光源11入射至第一弯折部132及第二弯折部133上的光线反射至导光板12中,从而提升了背光源11的利用率。
本实施例中的背光模组1还包括遮光胶层18,遮光胶层18位于上增亮膜153与显示面板2之间并设于增亮膜153的两端,以避免背光模组1的光线泄露,同时用于将显示面板2与背光模组1进行固定。
参照图4、图5,在本实施例的另一实施方式中,第二折弯部133上设有一个通孔102,电路板111嵌设于通孔102中且电路板111的顶面与第二折弯部133的顶面平齐,多个LED 112收容于容置槽130中。
该实施方式中的背光源1同样可以通过底板131、第一折弯部132以及第二折弯部133将背光源11的热量导出,加快背光源11的散热,本实施方式中的背光模组1的厚度将会进一步减小,从而可以实现显示器的薄型化。
参照图6、图7,在本实施例的又一实施方式中,第二折弯部133设有凹槽103,凹槽103位于第二折弯部133朝向底板131的一面,电路板111嵌设于凹槽103中,多个LED 112收容于容置槽130中。
该实施方式中的背光源1同样可以通过底板131、第一折弯部132以及第二折弯部133将背光源11的热量导出,加快背光源11的散热,本实施方式中的背光模组1的厚度也会减小,此外,本实施方式中电路板111与第二折弯部133的接触面积较大,可以进一步的提升背光源11的散热效果。
以上所述仅是本申请的具体实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本申请原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本申请的保护范围。

Claims (10)

1.一种背光模组,其特征在于,包括背光源、导光板及背框,所述背框包括底板、由所述底板一端弯折延伸出的第一折弯部及由所述第一折弯部弯折延伸出的第二折弯部,所述底板、第一折弯部及第二折弯部形成一U形的容置槽,所述背光源收容于所述容置槽中并与所述导光板的入光面相对设置,所述背光源与所述第一折弯部之间存在间隙。
2.根据权利要求1所述的背光模组,其特征在于,所述背光源包括电路板及间隔设置于所述电路板上的多个LED,所述电路板设于所述第二折弯部上,所述多个LED与所述导光板的入光面相对设置,所述多个LED与所述第一折弯部之间存在间隙。
3.根据权利要求2所述的背光模组,其特征在于,所述第二折弯部上设有多个通孔,所述多个通孔与所述多个LED一一对应,所述多个LED收容于所述容置槽中,所述电路板卡接于所述第二折弯部的表面。
4.根据权利要求2所述的背光模组,其特征在于,所述背框的材质为金属。
5.根据权利要求4所述的背光模组,其特征在于,每一个LED具有一接地引脚,所述接地引脚与所述背框电性接触。
6.根据权利要求1所述的背光模组,其特征在于,所述导光板与所述背光源相对的一端位于所述容置槽中。
7.根据权利要求1所述的背光模组,其特征在于,所述背框还包括由所述底板与所述第一折弯部相对的一端弯折延伸出的第三折弯部,所述第三折弯部与所述导光板的端部贴合。
8.根据权利要求1所述的背光模组,其特征在于,还包括反射层、光学膜片组及散热片,所述反射层设于所述导光板的底部并延伸至所述背光源的底部,所述光学膜片组设于所述导光板的顶部,所述散热片设于所述底板的底部。
9.根据权利要求1-8任一所述的背光模组,其特征在于,还包括设于所述容置槽中并位于所述背光源与所述第一折弯部之间的反射片,所述反射片包括垂直部和水平部,所述垂直部与所述第一折弯部的表面贴合,所述水平部与所述第二折弯部的表面贴合,所述背光源与所述垂直部之间存在间隙。
10.一种显示器,其特征在于,包括如权利要求1-9任一所述的背光模组。
CN201711396378.8A 2017-12-21 2017-12-21 显示器及其背光模组 Pending CN108181761A (zh)

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