CN202629814U - 侧入式背光模组 - Google Patents

侧入式背光模组 Download PDF

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CN202629814U
CN202629814U CN2012202553227U CN201220255322U CN202629814U CN 202629814 U CN202629814 U CN 202629814U CN 2012202553227 U CN2012202553227 U CN 2012202553227U CN 201220255322 U CN201220255322 U CN 201220255322U CN 202629814 U CN202629814 U CN 202629814U
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light
framework
sheet
light leak
illuminator
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鹿堃
颜凯
布占场
王贺陶
李智
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Priority to EP13728919.5A priority patent/EP2857890B1/en
Priority to US13/997,799 priority patent/US20140063846A1/en
Priority to KR1020137018069A priority patent/KR20140001239A/ko
Priority to PCT/CN2013/072537 priority patent/WO2013177967A1/zh
Priority to JP2015514326A priority patent/JP2015518259A/ja
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0081—Mechanical 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
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means

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Abstract

本实用新型涉及显示背光技术领域，提供了一种侧入式背光模组。所述侧入式背光模组包括：面光源装置，所述面光源装置包括发光体及导光腔，所述导光腔包括：底反射片、侧反射片及漏光片；所述底反射片设置在所述导光腔的底部；所述发光体设置在所述导光腔的至少一侧面上；所述侧反射片设置在所述导光腔侧面上不设置发光体的部分；所述漏光片设置在所述导光腔的顶部，且位于所述底反射片的上方。本实用新型通过反射片和漏光片的设计实现了侧入光源的混光，从而在侧入式背光模组中省略了导光板；进一步减轻了侧入式背光模组的重量，降低了成本。

Description

侧入式背光模组
技术领域
本实用新型涉及显示背光技术领域，特别涉及一种侧入式背光模组。 
背景技术
背光模组为液晶显示器的重要组件之一，由于液晶本身不发光，背光模组的功能就是供应充足的亮度与分布均匀的光源，使液晶显示器能正常显示影像。目前，液晶显示器的显示技术已经趋于成熟，尤其在背光模组的设计方面也有了很大的发展。背光模组除了应用在液晶显示器、液晶电视机等液晶显示装置之外，还可以为数码相框、电子纸、手机等显示装置提供光源。 
背光模组依据光源的位置不同分为直下式背光模组和侧入式背光模组。其中，直下式背光模组，直接把光源安放在出光面下面，光源发出的光经过一段空间距离和扩散板的扩散和混合后，成为面光源发射出来；侧入式背光模组，光源放在背光模组的侧面，由光源产生的光射至导光板内。导光板为能够将线光源(如：CCFL(Cold Cathode Fluorescent Lamp，冷阴极荧光灯管))或点光源(如：LED(Light Emitting Diode，发光二极管))雾化成均匀面光源的光学膜片，之后再经过扩散板使导光板射出的光线扩散与偏向，最后再经由聚光棱镜片对光线发散角度进行调整。 
如图1所示，传统侧入式背光模组包括框体8、底反射片2、导光板9、发光体1、扩散板5及光学膜片6，所述框体8上方依次设置有底反射片2、导光板9、扩散板5及光学膜片6，所述导光板包括导光板基材，该导光板基材包括一用以接收光束的入射面、一与入射面相连的底面、一与入射面相连且与底面相对的出射面、一与入射面相对的侧 面及其余相对的两侧面。所述发光体1设置在框体8的侧面，发光体1的出光面与导光板9的入光面相对。所述发光体1设置在框体8上的固定方式包括但不限于双面胶粘贴、螺丝固定、卡合部件固定。导光板9的底面设有通过印刷、激光、注塑、挤压等工艺制成的光学网点10。所述底反射片2具有漫反射功能。 
在传统的侧入式背光模组中，发光体1发出的光直接入射至导光板9内，导光板9通常为亚克力材料，由于相对空气折射率较大，入射光进入导光板后在导光板9内侧多次全反射，扩展至整个导光板9内部，入射光传播至光学网点10时，发生漫反射而通过导光板9的出光面射出导光板9。通过光学网点10的密度调整，可以使导光板9的出射光亮度在整个出光面上均匀分布。 
但是，在上述传统侧入式背光模组中，由于使用了亚克力材料的导光板，其重量普遍较大，与轻薄化设计理念相悖，而且由于亚克力材料价格较高，该设计产品通常成本较高。此外，光学网点需采用特殊工艺形成在导光板底面，并需要对光学网点分布进行精确控制，工艺复杂且容易产生不良品。 
实用新型内容
(一)要解决的技术问题 
本实用新型为了解决现有技术中侧入式背光模组的导光板质量重、成本高、导光板光学网点加工复杂问题，提供了一种侧入式背光模组。 
(二)技术方案 
为解决上述技术问题，本实用新型具体采用如下方案进行： 
本实用新型提供一种侧入式背光模组，包括：面光源装置，所述面光源装置包括发光体，其特征在于，所述面光源装置还包括导光腔，所述导光腔包括：底反射片、侧反射片及漏光片；所述底反射片设置在所述导光腔的底部；所述发光体设置在所述导光腔的至少一侧面 上；所述侧反射片设置在所述导光腔侧面上不设置发光体的部分；所述漏光片设置在所述导光腔的顶部，且位于所述底反射片的上方。 
优选地，所述漏光片与底反射片相对的一面为全反射表面，所述漏光片的另一面为漫反射表面。 
优选地，所述漏光片上设置有漏光孔。 
优选地，所述漏光片上的漏光孔组成光学网点阵列，所述漏光孔网点密度或孔径大小随着与发光体的距离变大而逐渐增大。 
优选地，所述漏光片通过支撑架设置在所述底反射片的上方。 
优选地，所述面光源装置还包括一框体，所述框体具有一开口并于其中形成有一中空区域；所述导光腔及发光体均设置于所述框体内。 
优选地，所述支撑架最下端为框体卡合部，所述框体上设置有框体卡合部，所述框体卡合部通过所述框体卡合槽将所述支撑架安装在所述框体相应位置中。 
优选地，所述支撑架中部偏上设置有一漏光片卡合部，所述漏光片上设置有漏光片卡合部，所述漏光片卡合部通过所述漏光片卡合槽使支撑架与所述漏光片形成固定装配。 
优选地，所述支撑架为上小下大的锥形结构。 
优选地，所述框体为盒状，所述底反射片设置在所述盒装框体的内底面，所述发光体设置于所述盒装框体的至少一内侧壁上，所述侧反射片设置在所述盒装框体内侧壁上不设置发光体的部分，所述支撑架固定在所述盒装框体的底面上，所述漏光片通过所述支撑架设置在所述底反射片的上方。 
(三)有益效果 
本实用新型中，通过反射片和漏光片的设计实现了侧入光源的混光，从而在背光模组中省略了导光板的设计。本实用新型的背光模组除具有侧入式本身产品厚度薄、功耗低的优势外；由于省略了导光板， 进一步减轻了背光模组的重量，降低了成本；同时由于光线在空气中传播，避免了导光板对光线的吸收，提高了光线利用率；此外，漏光片和网点阵列的制备过程简单，简化了制备工艺。 
附图说明
图1为现有技术中侧入式背光模组的结构示意图； 
图2为本实用新型实施例中侧入式背光模组的结构示意图； 
图3为本实用新型实施例中漏光片的结构示意图； 
图4为本实用新型实施例中支撑架的结构示意图。 
主要元件符号说明： 
1：发光体，2：底反射片，3：侧反射片，4：漏光片，5：扩散板，6：光学膜片，7：支撑架，8：框体，9：导光板，10：光学网点，11：漏光片卡合槽，12：光源远侧漏光孔，13：光源近侧漏光孔，14：漏光片卡合部，15：框体卡合部。 
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。 
在本实用新型的实施例中，为了解决导光板质量重、成本高、导光板光学网点加工复杂问题，设计了一种无导光板的侧入式背光模组。本实用新型的背光模组与传统直下背光模组相比，由于采用侧入式背光模组大大降低了产品的厚度，并且减少了发光体的数量，从而降低了功耗与成本；而相对于传统侧入式背光模组，本实用新型中的背光模组中省去了导光板也可以实现导光板的功能，由侧光源得到均匀的面光源，由于省略了导光板，进一步减轻了背光模组的重量，降低了成本，简化了工艺步骤，不用再进行复杂的导光板光学网点工艺 过程。 
如图2所示，本实用新型实施例的侧入式背光模组包括面光源装置，所述面光源装置包括发光体1及导光腔，所述导光腔包括：底反射片2、侧反射片3及漏光片4；所述底反射片2设置在所述导光腔的底部；所述发光体1设置在所述导光腔的至少一侧面上；所述侧反射片3设置在所述导光腔侧面上不设置发光体的部分；所述漏光片4设置在所述导光腔的顶部，且位于所述底反射片2的上方。 
更进一步的，所述漏光片4与底反射片2相对的一面为全反射表面，所述漏光片4的另一面为漫反射表面。 
更进一步的，所述漏光片4上设置有漏光孔。 
更进一步的，所述漏光片4上的漏光孔组成光学网点阵列，所述漏光孔网点密度或孔径大小随着与发光体的距离变大而逐渐增大。 
更近一步地，如图2所示，本实用新型的无导光板的侧入式背光模组包括面光源装置，所述面光源装置包括发光体1及导光腔，所述导光腔包括：包括底反射片2、侧反射片3、漏光片4，所述侧入式背光模组还包括支撑架7，所述漏光片4通过支撑架7设置在底反射片的上方；更具体地，所述侧入式背光模组包括：设置在背光模组至少一个侧面上的发光体1，设置在背光模组底部的底反射片2，设置在背光模组各侧面上不设置发光体的部分的侧反射片3，以及通过多个支撑架7设置在所述底反射片2上方的漏光片4，漏光片4上具有多个漏光孔。底反射片2、侧反射片3和漏光片4共同组成一个导光腔，该导光腔内表面均具有全反射作用，位于侧面的发光体1发出的光经过内表面的多次反射，扩散至整个导光腔并通过漏光片4上的漏光孔形成面状出射光。 
更进一步地，图2中的侧入式背光模组还包括盒状结构的框体8，框体的尺寸与显示面板尺寸相适应。所述框体具有一开口并于其中形成有一中空区域；所述导光腔及发光体均设置于所述框体内。发光体 1设置在框体8的侧壁上，具体可通过导热胶带或螺钉进行固定；底反射片2设置在框体8的内底面，具体可通过贴附方式实现；侧反射片3设置在框体8的侧壁上不设置发光体的部分，具体可通过贴附方式实现；支撑架7固定在框体8的底面上(通过框体8上的卡孔、凹槽或连接件等设置进行固定)；漏光片4通过支撑架7设置在底反射片2的上方。 
此外，在背光模组的出光面(即框体8的顶部、漏光片4的上方)，还设置有扩散板5和光学膜片6，扩散板用于对从导光腔中出射的光做进一步的扩散，以使光线分布更均匀；光学膜片6则起改变光形的作用。在图2的实施例中，扩散板5同样由支撑架7提供支撑并与漏光片4间存在一定的混光距离；光学膜片6架设在扩散板5的上方，由框体8的侧壁提供支撑。 
如图3所示，图3为本实用新型优选的实施例中漏光片结构示意图。漏光片4由表面具有反射功能的不透光材质制成，漏光片4与底反射片2相对的一面为全反射表面，漏光片4的另一面为漫反射表面，在漏光片4上设置有漏光片卡合槽11，支撑架7穿过漏光片卡合槽11对漏光片4形成固定装配。在优选的实施例中，穿过漏光片卡合槽11的支撑架7的头部对扩散板5形成支撑。 
在漏光片4上还设置有漏光孔，所述漏光孔组成光学网点阵列，导光腔内的光可以通过漏光孔射出。通过光学网点阵列的疏密设计，可以调节整个出光面上的发光亮度均匀度，从而实现整个出光面的亮度均匀。通常来说，光源远侧漏光孔12(即距离发光体1较远的漏光孔)网点密度或孔径较大，光源近侧漏光孔13网点密度或孔径较小，图3中以控制孔径大小为例描述网点阵列的分布。漏光片4的漏光孔可以通过激光切割/打孔，或模具冲压等工艺方法来制作。 
图4展示了本实用新型优选实施例中支撑架的结构示意图。整个支撑架7优选为上小下大的锥形结构，可为透明塑料材料。支撑架7 最下端为框体卡合部15，所述框体8上设置有框体卡合槽，所述框体卡合部15通过框体卡合槽可以将支撑架7固定在所述框体8相应位置中。支撑架中部偏上有一漏光片卡合部14，所述漏光片上设置有漏光片卡合槽11，支撑架7可以通过漏光片4上的漏光片卡合槽11利用漏光片卡合部14形成固定，从而使漏光片4与底反射片2的距离固定，形成稳定的导光腔。 
支撑架7的最上端优选为为圆头，扩散板5放置在支撑架7的圆头上，通过多个支撑架7支撑固定。圆头的作用是使支撑架7与扩散板5的接触面积最小，以尽量减轻面光源表面的黑点现象，并且避免支撑架7与扩散板5之间的刮伤。 
在漏光片4上方设置扩散板5，两者之间需要存在一定的混光距离，以遮蔽漏光片上的光学网点。混光距离由漏光片漏光片卡合部14与支撑架7最上端之间的距离确定。在扩散板的上方放置光学膜片6，这与目前液晶显示屏背光源的设计相同。 
本领域相关技术人员应能理解，上述图2-4所示仅仅是本实用新型的优选实施例，实际情况中可以根据器件的尺寸、功能和设计要求做相应调整。 
本实用新型实施例中，所述侧反射片设置在所述导光腔侧面上不设置发光体的部分，发光体1所在的侧面可以设置或不设置侧反射片3，当设置侧反射片时，侧反射片位于发光体1的背部，对射向该侧面的光进行全反射。漏光片4上的漏光孔也可以孔径相同，只是在接近发光体1的位置漏光孔密度(即单位面积上漏光孔数目)较小，而远离发光体的位置漏光孔密度逐渐变大。支撑架7的形状可以不必为锥形结构，也不必由一个支撑架7同时对漏光片4和扩散板5提供支撑，事实上，只要能分别对漏光片和扩散板提供支撑即可，比如分别形成在框体8和漏光片4上的任意形状的凸起均可。因此，上述图2-4优选实施例中器件的形状和位置不应视为对本实用新型的各器件的限制。 
在模拟测试中，本实用新型的背光模组可以做到较高的画面均匀度(均匀度60％，通过网点调整还可以提高)和光线利用率(约42％，常规结构53％，通过网点调整和表面改善能够提高)。由于导光腔内光路与常规结构中导光板内光路基本相同，但传播路线很大范围内都是在空气中传播，避免了亚克力材料对光线的吸收，因此光能的利用率能够与常规导光板结构的利用率大致相当，或优于常规导光板结构。 
本实用新型的背光模组可以应用于显示装置中，所述显示装置可以为：液晶面板、电子纸、OLED面板、液晶电视、液晶显示器、数码相框、手机、平板电脑等任何具有显示功能的产品或部件。 
本实用新型的方案中，通过反射片和漏光片的设计实现了侧入光源的混光，从而在背光模组中省略了导光板的设计。本实用新型的背光模组与传统直下式背光模组相比，由于采用侧入式而大大降低了产品的厚度，并且减少了发光体的数量，从而降低了功耗与成本；而相对于传统侧入式背光模组，本实用新型中可以不使用导光板即由侧入光源发出的光得到均匀的面出射光，由于省略了导光板，进一步减轻了背光模组的重量，降低了成本；同时由于光线在空气中传播，避免了导光板对光线的吸收，提高了光线利用率；此外，漏光片和网点阵列的制备过程简单，简化了制备工艺。 
以上实施方式仅用于说明本实用新型，而并非对本实用新型的限制，有关技术领域的普通技术人员，在不脱离本实用新型的精神和范围的情况下，还可以做出各种变化和变型，因此所有等同的技术方案也属于本实用新型的范畴，本实用新型的实际保护范围应由权利要求限定。 

Claims (10)

1.一种侧入式背光模组，包括：面光源装置，所述面光源装置包括发光体，其特征在于，所述面光源装置还包括导光腔，所述导光腔包括：底反射片、侧反射片及漏光片；所述底反射片设置在所述导光腔的底部；所述发光体设置在所述导光腔的至少一侧面上；所述侧反射片设置在所述导光腔侧面上不设置发光体的部分；所述漏光片设置在所述导光腔的顶部，且位于所述底反射片的上方。
2.根据权利要求1所述的侧入式背光模组，其特征在于，所述漏光片与底反射片相对的一面为全反射表面，所述漏光片的另一面为漫反射表面。
3.根据权利要求2所述的侧入式背光模组，其特征在于，所述漏光片上设置有漏光孔。
4.根据权利要求3所述的侧入式背光模组，其特征在于，所述漏光片上的漏光孔组成光学网点阵列，所述漏光孔网点密度或孔径大小随着与发光体的距离变大而逐渐增大。
5.根据权利要求1-4任一所述的侧入式背光模组，其特征在于，所述漏光片通过支撑架设置在所述底反射片的上方。
6.根据权利要求5所述的侧入式背光模组，其特征在于，所述面光源装置还包括一框体，所述框体具有一开口并于其中形成有一中空区域；所述导光腔及发光体均设置于所述框体内。
7.根据权利要求6所述的侧入式背光模组，其特征在于，所述支撑架最下端为框体卡合部，所述框体上设置有框体卡合槽，所述框体卡合部通过所述框体卡合槽将所述支撑架安装在所述框体相应位置中。
8.根据权利要求7所述的侧入式背光模组，其特征在于，所述支撑架中部偏上设置有一漏光片卡合部，所述漏光片上设置有漏光片卡合槽，所述漏光片卡合部通过所述漏光片卡合槽使支撑架与所述漏光片形成固定装配。
9.根据权利要求8所述的侧入式背光模组，其特征在于，所述支撑架为上小下大的锥形结构。
10.根据权利要求9所述的侧入式背光模组，其特征在于，所述框体为盒状，所述底反射片设置在所述盒装框体的内底面，所述发光体设置于所述盒装框体的至少一内侧壁上，所述侧反射片设置在所述盒装框体内侧壁上不设置发光体的部分，所述支撑架固定在所述盒装框体的底面上，所述漏光片通过所述支撑架设置在所述底反射片的上方。
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