WO2013086715A1 - 背板及相应的背光模组 - Google Patents

背板及相应的背光模组 Download PDF

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Publication number
WO2013086715A1
WO2013086715A1 PCT/CN2011/084032 CN2011084032W WO2013086715A1 WO 2013086715 A1 WO2013086715 A1 WO 2013086715A1 CN 2011084032 W CN2011084032 W CN 2011084032W WO 2013086715 A1 WO2013086715 A1 WO 2013086715A1
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WO
WIPO (PCT)
Prior art keywords
light guide
plate
bottom plate
guide plate
light source
Prior art date
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PCT/CN2011/084032
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English (en)
French (fr)
Inventor
周革革
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/380,855 priority Critical patent/US8801263B2/en
Publication of WO2013086715A1 publication Critical patent/WO2013086715A1/zh

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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
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02B6/0091—Positioning aspects of the light source relative to the light guide

Definitions

  • the present invention relates to display technologies, and in particular to a backplane for a liquid crystal display device and a corresponding backlight module.
  • liquid crystal display device liquid crystal display, LCD
  • cathode ray tube cathode ray tube
  • the CRT cathode ray tube
  • liquid crystal display devices have been widely used in various electronic devices such as digital televisions, computers, personal digital assistants, mobile phones, and digital cameras.
  • the liquid crystal display panel itself does not have the function of emitting light, it is usually required to provide a backlight module under the liquid crystal display panel (Backlight) Module) provides the surface light source required for the liquid crystal display panel, and at the same time obtains sufficient brightness and contrast, thereby enabling the liquid crystal display device to perform the display function.
  • Backlight backlight module under the liquid crystal display panel
  • the conventional backlight module 100 includes a back plate 110 , a reflective sheet 120 , a light guide plate 130 , a light source 140 , and a heat dissipation aluminum extrusion 150 .
  • the back plate 110 includes a bottom plate 111, four side plates 112, and four connecting portions 113. Each connecting portion 113 is used for connecting the bottom plate 111 and a corresponding side plate 112, respectively.
  • a reflection sheet 120 and a light guide plate 130 are sequentially disposed on the bottom plate 111.
  • the light source 140 is disposed relative to the light guide plate 130 to introduce the light emitted by the light source 140 into the light guide plate 130 to be converted into a surface light source.
  • the heat dissipation aluminum extrusion 150 is disposed between the light source 140 and the back plate 110 to dissipate heat generated by the light source 140 and fix the light source 140, and a portion of the heat dissipation aluminum extrusion 150 may also be used to support the reflection sheet 120 and the light guide plate 130.
  • the cost of the heat dissipating aluminum extrusion 150 is relatively high, and it is not easy to accurately position the relative positions of the light source 140 and the light guide plate 130, and the coupling efficiency is not high.
  • the improvement of the light source packaging technology and the improvement of the performance of the thermal conductive material it is no longer necessary to provide a special heat dissipation aluminum extrusion 150 to dissipate the heat generated by the light source 140. Therefore, in order to overcome the above problems, it is urgent to propose a new backlight module structure.
  • the technical problem to be solved by the present invention is to provide a backplane and a backlight module, which have lower cost and high coupling efficiency.
  • the invention provides a backboard suitable for use in a backlight module.
  • the backboard includes: a bottom plate for carrying a light guide plate; four side plates respectively perpendicular to the bottom plate to form an accommodation space for the light guide plate to be placed; at least one bridging structure, one from the side plate
  • the inner surface extends inwardly, the at least one bridge structure and the side panel are fixedly connected to carry the positioning of the at least one light source and the light guide plate, and the at least one bridge structure is a multi-faceted three-dimensional structure protruding outward.
  • the upper surface of the light source and the light guide plate is a planar structure.
  • the bottom plate is higher than the lower edges of the side plates, and the upper surface thereof is on the same horizontal surface as the upper surface of the at least one bridge structure.
  • the backboard further comprises four connecting portions, and each connecting portion is respectively disposed between the bottom plate and a corresponding side plate to connect the bottom plate and the corresponding side plate.
  • the bottom plate, the connecting portions, the side plates, and the at least one bridging structure are integrally formed.
  • the invention provides a backboard suitable for use in a backlight module.
  • the backboard includes a bottom panel, four side panels, and at least one bridging structure.
  • the backplane is configured to carry a light guide plate, and the side panels are respectively perpendicular to the bottom panel to form an accommodation space for the light guide panel to be placed.
  • An inner surface of the side panel extends inwardly to position the at least one light source and the light guide plate.
  • the at least one bridge structure is a multi-faceted three-dimensional structure protruding outward, and an upper surface of the light source and the light guide plate is a planar structure.
  • the bottom plate is higher than the lower edges of the side plates, and the upper surface thereof is on the same horizontal surface as the upper surface of the at least one bridge structure.
  • the backboard further comprises four connecting portions, and each connecting portion is respectively disposed between the bottom plate and a corresponding side plate to connect the bottom plate and the corresponding side plate.
  • the bottom plate, the connecting portions, the side plates, and the at least one bridging structure are integrally formed.
  • the upper surface of the at least one bridge structure is a rough surface.
  • the upper surface of the at least one bridge structure is provided with a microstructure or a groove structure recessed inward to better fix the light source and the light guide plate.
  • the at least one bridge structure and the side panels are fixedly connected to each other to carry a specific light guide plate and light source combination with different characteristics.
  • the invention also provides a backlight module comprising a light guide plate, at least one light source and a back plate.
  • the backboard includes a bottom panel, four side panels, and at least one bridging structure.
  • the backplane is configured to carry a light guide plate, and the side panels are respectively perpendicular to the bottom panel to form an accommodation space for the light guide panel to be placed.
  • the at least one bridging structure extends inward from an inner surface of the side panel to position the at least one light source and the light guide panel.
  • the light guide plate includes a light incident surface, and the at least one bridging structure is respectively disposed on a side plate facing the light incident surface to carry the at least one light source.
  • the light guide plate includes a plurality of light incident surfaces
  • the backlight module includes a plurality of light sources
  • the back plate includes a plurality of bridge structures, and the bridge structures are respectively disposed on the plurality of side plates facing the light guide plates. Above, to carry the light sources separately.
  • the at least one bridge structure is a multi-faceted three-dimensional structure protruding outward, and an upper surface of the light source and the light guide plate is a planar structure.
  • the upper surface of the at least one bridge structure is a rough surface.
  • the upper surface of the at least one bridge structure is provided with a microstructure or a groove structure recessed inward to better fix the light source and the light guide plate.
  • the bottom plate is higher than the lower edges of the side plates, and the upper surface thereof is on the same horizontal surface as the upper surface of the at least one bridge structure.
  • the backboard further comprises four connecting portions, and each connecting portion is respectively disposed between the bottom plate and a corresponding side plate to connect the bottom plate and the corresponding side plate.
  • the backplane and the backlight module of the present invention are provided with a bridging structure for carrying a light source on the side panel of the backboard, so that the aluminum extrusion can be omitted, so the cost is low, and the bridging structure can be accurately utilized.
  • the coupling efficiency is high.
  • FIG. 1 is a schematic cross-sectional view of a conventional backlight module.
  • FIG. 2 is a cross-sectional view of a backlight module according to a preferred embodiment of the present invention.
  • FIG. 3 is a perspective view of the backing plate of FIG. 2 in a preferred embodiment.
  • FIG. 4 is an enlarged schematic view showing the first embodiment of the bridge structure shown in FIG. 2.
  • FIG. 5 is an enlarged schematic view showing a second embodiment of the bridge structure shown in FIG. 2.
  • FIG. 5 is an enlarged schematic view showing a second embodiment of the bridge structure shown in FIG. 2.
  • Fig. 6 is an enlarged schematic view showing a third embodiment of the bridge structure shown in Fig. 2.
  • Fig. 7 is an enlarged schematic view showing a fourth embodiment of the bridge structure shown in Fig. 2.
  • Figure 8 is an enlarged schematic view showing a fifth embodiment of the bridge structure shown in Figure 2.
  • the backlight module 200 of the present invention includes a back plate 210 , a reflective sheet 220 , a light guide plate 230 , and at least one light source 240 .
  • the reflective sheet 220 and the light guide plate 230 are sequentially disposed on the back plate 210.
  • the backboard 210 includes a bottom plate 211, four side plates 212, and four connecting portions 213 respectively connecting the bottom plate 211 and the side plates 212, thereby forming a reflective sheet 220, a light guide plate 230, and The accommodation space in which the light source 240 is placed.
  • the bottom plate 211 is designed to be higher than the lower edge of the side plate 212, and the side plate 212 and the bottom plate 211 are respectively joined together by a connecting portion 213 provided between the bottom plate 211 and the side plate 212, thereby constituting the above-mentioned accommodation space.
  • the distance between each of the side plates 212 and the bottom plate 211 is equal, that is, the size of each of the connecting portions 213 is uniform.
  • the side plate 212 can also be designed to be directly connected to the bottom plate 211.
  • the side plates 212 are perpendicular to the bottom plate 211, and the back plate 210 further includes at least one bridge structure 214 extending inward from an inner surface of the side plate 212 to support positioning.
  • the plurality of bridging structures 214 are outwardly protruding trapezoidal protrusion structures, and the upper surface of the light source 240 and the light guide plate 230 is a flat planar structure and is on the same level as the upper surface of the bottom plate 211.
  • the bottom plate 211, the bridging structure 214 and the side plate 212 precisely fix the positions of the light source 240 and the light guide plate 230, thereby better ensuring the alignment of the light source and the light guide plate, and improving the coupling of the light source 240 and the light guide plate 230. Efficiency, reducing light loss.
  • the bridging structure 214 may include a plurality of different varying multi-faceted solid structures, and the upper surface thereof may be a rough surface. Further, the upper surface may include various microstructure designs, or The fixed position of the light source is a groove structure that is recessed inward to better fix the light source 240 and the light guide plate 230.
  • the present invention may further include a plurality of light sources 240, and a plurality of bridging structures 214 are disposed on the side plate 212 facing the light incident surface (not shown) of the light guide plate 230, To carry these light sources 240 separately.
  • the light guide plate 230 of the present invention may further have a plurality of light incident surfaces (not shown), and a plurality of bridging structures 214 are respectively disposed on the plurality of side plates 212 facing the light incident surfaces, respectively, and the light guide plates.
  • the light incident characteristics are matched to each other to carry the plurality of light sources 240 at the matching phase of the fixed phase, so that the light emitted by the light sources 240 can enter the light guide plate 230 from the plurality of light incident surfaces of the light guide plate 230.
  • the light source 240 can be a point source, such as a light-emitting diode. LED) to utilize the bridge structure 214 for carrying. Moreover, those skilled in the art will appreciate that the light source 240 can also be a line source, such as a cold cathode fluorescent lamp (Code Cathode). Fluorescent Light, CCFL), which may be carried by a plurality of bridging structures 214, such as three or two bridging structures 214, to ensure precise coupling of light source 240 to light guide plate 230.
  • CCFL Fluorescent Light
  • the backlight module 200 may further include other types of optical films, such as brightness enhancer (brightness enhance) Film), which is disposed above the light guide plate 230.
  • the bottom plate 211, the side plate 212, the connecting portion 213, and the bridging structure 214 of the back plate 210 may be integrally formed by an integral molding technique.
  • the bridging structure 214 and the side panel 212 can also be fixed by a movable plug connection to flexibly and conveniently carry a specific light guide plate and light source combination combined with different characteristic requirements.
  • the backlight module 200 of the present invention is provided with a bridging structure 214 for carrying the light source 240 on the side plate 212 of the back plate 210, so that the aluminum extrusion can be omitted, so the cost is low, and the bridging structure can be utilized. 214 accurately positions the relative position of the light source 240 and the light guide plate 230, and the coupling efficiency thereof is high.

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

Abstract

一种背光模组（200）包括一个导光板（230）、至少一个光源（240）以及一个背板（210）。该背板（210）包括一个底板（211）、四个侧板（212）以及至少一个架桥结构（214）。侧板（212）分别垂直于底板（211）以构成容纳导光板（230）的容纳空间，底板（211）用于承载导光板（230）。所述至少一个架桥结构（214）自该侧板（212）的内表面向内延伸一定位置，以承载定位至少一个光源（240）与导光板（230）。通过在背板（210）的侧板（212）上设置用于承载定位光源（240）和导光板（230）的架桥结构（214），可以精确地定位光源（240）与导光板（230）的相对位置，光耦合效率较高。

Description

背板及相应的背光模组
【技术领域】
本发明涉及显示技术，特别是涉及一种应用于液晶显示装置的背板及相应的背光模组。
【背景技术】
平面显示装置，例如液晶显示装置(liquid crystal display, LCD)具有轻薄、节能、无辐射等诸多优点，因此其已经逐渐取代传统的阴极射线管(cathode ray tube, CRT)显示装置，成为显示装置的主流。目前液晶显示装置已经广泛地应用在数字电视、计算机、个人数字助理、移动电话以及数码相机等各类电子设备中。
由于液晶显示面板本身并不具有发光的功能，因此通常需要在液晶显示面板之下设置背光模组(Backlight Module)以提供液晶显示面板所需要的面光源，并同时获得足够的亮度和对比度，进而使得液晶显示装置实现显示的功能。
图1为一种现有的背光模组的剖面示意图。如图1所示，现有的背光模组100包括背板110、反射片120、导光板130、光源140以及散热铝挤150。其中背板110包括底板111、四个侧板112以及四个连结部113，每个连结部113分别用于连接底板111与一对应的侧板112。底板111上依次设置反射片120以及导光板130。光源140相对于导光板130设置，以将光源140所发出的光线导入导光板130从而转化成面光源。此外，散热铝挤150设置在光源140与背板110之间以散去光源140所产生的热量并固定光源140，且部分的散热铝挤150也可以用来支撑反射片120和导光板130。
但是，散热铝挤150的成本较高，其也不容易精确地定位光源140和导光板130的相对位置，耦光效率不高。而且随着光源封装技术的提升和导热材料性能的提高，其已经不再需要设置专门的散热铝挤150来发散光源140所产生的热量。因此，为了克服上述问题，迫切需要提出一种新的背光模组结构。
【发明内容】
本发明解决的技术问题在于提供一种背板以及一背光模组，其成本较低，且耦光效率较高。
本发明提供一种背板，其适用于一个背光模组。该背板包括：一个底板，用以承载一个导光板；四个侧板，分别垂直于该底板，以构成可供该导光板放置的容纳空间；至少一个架桥结构，自该侧板的一个内表面向内延伸一定位置，该至少一架桥结构与侧板为活动连接固定，以承载定位至少一个光源与该导光板，并且，该至少一架桥结构为向外突出的多面立体结构，且其与该光源和导光板相接的上表面为平面结构。
其中，该底板高于该些侧板的下边缘，且其上表面与该至少一架桥结构的上表面处于同一水平面上。
其中，该背板进一步包括四个连接部，且每个连接部分别设置在该底板和一个对应的侧板之间，以连接该底板和该对应的侧板。
其中，该底板、该些连接部、该些侧板以及该至少一个架桥结构一体成型。
本发明提供一种背板，其适用于一个背光模组。该背板包括一个底板、四个侧板以及至少一个架桥结构。该背板用以承载一个导光板，该些侧板分别垂直于该底板以构成可供该导光板放置的容纳空间。自该侧板的一个内表面向内延伸一定位置，以承载定位至少一个光源与该导光板。
其中，该至少一架桥结构为向外突出的多面立体结构，且其与该光源和导光板相接的上表面为平面结构。
其中，该底板高于该些侧板的下边缘，且其上表面与该至少一架桥结构的上表面处于同一水平面上。
其中，该背板进一步包括四个连接部，且每个连接部分别设置在该底板和一个对应的侧板之间，以连接该底板和该对应的侧板。
其中，该底板、该些连接部、该些侧板以及该至少一个架桥结构一体成型。
其中，该至少一架桥结构的上表面为粗糙表面。
其中，该至少一架桥结构的上表面设置有微结构或向内凹陷的凹槽结构，以更好的固定光源和导光板。
其中，该至少一架桥结构与侧板为活动连接固定，以承载搭配不同特性的特定导光板和光源组合。
本发明还提供一种背光模组，其包括一个导光板、至少一个光源以及一个背板。该背板包括一个底板、四个侧板以及至少一个架桥结构。该背板用以承载一个导光板，该些侧板分别垂直于该底板以构成可供该导光板放置的容纳空间。该至少一个架桥结构自该侧板的一个内表面向内延伸一定位置，以承载定位至少一个光源与该导光板。
其中，该导光板包括一个入光面，且该至少一个架桥结构分别设置在正对于该入光面的一个侧板之上，以承载该至少一个光源。
其中，该导光板包括多个入光面，该背光模组包括多个光源，且该背板包括多个架桥结构，这些架桥结构分别设置在正对于该些导光板的多个侧板之上，以分别承载该些光源。
其中，该至少一架桥结构为向外突出的多面立体结构，且其与该光源和导光板相接的上表面为平面结构。
其中，该至少一架桥结构的上表面为粗糙表面。
其中，该至少一架桥结构的上表面设置有微结构或向内凹陷的凹槽结构，以更好的固定光源和导光板。
其中，该底板高于该些侧板的下边缘，且其上表面与该至少一架桥结构的上表面处于同一水平面上。
其中，该背板进一步包括四个连接部，且每个连接部分别设置在该底板和一个对应的侧板之间，以连接该底板和该对应的侧板。
本发明的背板、背光模组是在背板的侧板上设置用以承载光源的架桥结构，则其可以省略掉散热铝挤，因此其成本较低，且可以利用架桥结构精确地定位光源与导光板的相对位置，则其耦光效率较高。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例，并配合附图，详细说明如下。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为一种现有的背光模组的剖面示意图。
图2为本发明一较佳实施例所提供的背光模组的剖面示意图。
图3为图2所示的背板在一较佳实施例的立体示意图。
图4为图2所示架桥结构第一实施例的放大示意图。
图5为图2所示架桥结构第二实施例的放大示意图。
图6为图2所示架桥结构第三实施例的放大示意图。
图7为图2所示架桥结构第四实施例的放大示意图。
图8为图2所示架桥结构第五实施例的放大示意图。
【具体实施方式】
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例，对依据本发明提出的背板、背光模组以及相应的液晶显示装置其具体实施方式、方法、步骤、结构、特征及其功效，详细说明如下。有关本发明的前述及其他技术内容、特点及功效,在以下配合参考图式的较佳实施例的详细说明中将可清楚呈现。通过具体实施方式的说明,当可对本发明为达成预定目的所采取的技术手段及功效得以更加深入且具体的了解，然而所附图式仅是提供参考与说明之用,并非用来对本发明加以限制。
图2为本发明一较佳实施例所提供的背光模组的剖面示意图。如图2所示，本发明的背光模组200包括背板210、反射片220、导光板230以及至少一光源240。其中，反射片220和导光板230依次设置在背板210上。
图3为图2所示的背板在一较佳实施例的立体示意图。如图2-3所示，背板210包括底板211、四个侧板212以及分别连接底板211和侧板212之间的四个连接部213，从而构成可供反射片220、导光板230和光源240放置的容纳空间。底板211被设计为高于侧板212的下边缘，且利用设置在底板211与侧板212之间的连接部213而分别将侧板212与底板211连接在一起，从而构成上述容纳空间。优选地，每个侧板212与底板211之间的距离相等，也就是说，每个连接部213的大小一致。当然，本领域技术人员可以理解的是，侧板212也可设计成直接与底板211连接。
作为本发明实施例的一种，该侧板212分别垂直于底板211，且该背板210进一步包括至少一架桥结构214自该侧板212的一个内表面向内延伸一定位置，以支撑定位该至少一光源240与该导光板230。且该多个架桥结构214为向外突出的梯形突起结构，其与光源240和导光板230相接的上表面为平缓的平面结构，且与底板211的上表面处于同一水平面上，如此，底板211、架桥结构214以及侧板212即精确的固定着光源240和导光板230的位置，从而更好地保证了光源和导光板的对中性，提高光源240与导光板230的耦光效率，减少光损失。
图4至图8是架桥结构第一至第五实施例的放大示意图。如图4至图8所示，该架桥结构214可以包括多种不同变化多面立体结构，且其上表面可以为粗糙表面，进一步的，其上表面可以包含各种微结构设计，或者是在光源固定位置为向内凹陷的凹槽结构，以更好的固定光源240和导光板230。
此外，本领域技术人员可以理解的是，本发明还可以包括多个光源240，并在面对导光板230的入光面(未标示)的那个侧板212上设置多个架桥结构214，以分别承载这些光源240。另，本发明中的导光板230还可以具有多个入光面(未标示)，在面对这些入光面的多个侧板212上分别设置多个架桥结构214，分别与导光板的入光特性相匹配设计，以分别承载固定相匹配位置的多个光源240，使这些光源240所发出的光线可以从导光板230的多个入光面进入导光板230。
光源240可为点光源，例如发光二极体(light-emitting diode, LED)，从而利用架桥结构214来进行承载。此外，本领域技术人员可以理解的是，光源240也可为线光源，例如冷阴极荧光灯(Code Cathode Fluorescent Light, CCFL)，其可以利用多个架桥结构214，例如三个或者两个架桥结构214来进行承载，从而保证光源240与导光板230的精确耦合。
此外，背光模组200还可以进一步包括其它类型的光学膜片，例如增亮片(brightness enhance film)，其设置在导光板230之上。背板210的底板211、侧板212、连接部213以及架桥结构214可采用一体成型技术而一体成型。架桥结构214与侧板212亦可是可活动的插接连接固定，以灵活方便的承载搭配不同特性要求组合的特定导光板和光源组合。
因此，本发明的背光模组200是在背板210的侧板212上设置承载光源240的架桥结构214，则其可以省略掉散热铝挤，因此其成本较低，且可以利用架桥结构214精确地定位光源240与导光板230的相对位置，则其耦光效率较高。
虽然本发明已以实施例揭露如上，然其并非用以限定本发明，任何本发明所属技术领域的技术人员，在不脱离本发明的精神和范围内，当可作各种更动与润饰，因此本发明的保护范围当视所附的权利要求所界定者为准。

Claims (20)

  1. 一种背板，适用于一个背光模组，其特征在于：该背板包括：
    一个底板，用以承载一个导光板；
    四个侧板，分别垂直于该底板，以构成可供该导光板放置的容纳空间；
    至少一个架桥结构，自该侧板的一个内表面向内延伸一定位置，该至少一架桥结构与侧板为活动连接固定，以承载定位至少一个光源与该导光板，并且，该至少一架 桥结构为向外突出的多面立体结构，且其与该光源和导光板相接的上表面为平面结构。
  2. 如权利要求1所述的背板，其特征在于：该底板高于该些侧板的下边缘，且其上表面与该至少一架桥结构的上表面处于同一水平面上。
  3. 如权利要求2所述的背板，其特征在于：该背板进一步包括四个连接部，且每个连接部分别设置在该底板和一个对应的侧板之间，以连接该底板和该对应的侧板。
  4. 如权利要求3所述的背板，其特征在于：该底板、该些连接部、该些侧板以及该至少一个架桥结构一体成型。
  5. 一种背板，适用于一个背光模组，其特征在于：该背板包括：
    一个底板，用以承载一个导光板；
    四个侧板，分别垂直于该底板，以构成可供该导光板放置的容纳空间；
    至少一个架桥结构，自该侧板的一个内表面向内延伸一定位置，以承载定位至少一个光源与该导光板。
  6. 如权利要求5所述的背板，其特征在于：该至少一架桥结构为向外突出的多面立体结构，且其与该光源和导光板相接的上表面为平面结构。
  7. 如权利要求6所述的背板，其特征在于：该底板高于该些侧板的下边缘，且其上表面与该至少一架桥结构的上表面处于同一水平面上。
  8. 如权利要求7所述的背板，其特征在于：该背板进一步包括四个连接部，且每个连接部分别设置在该底板和一个对应的侧板之间，以连接该底板和该对应的侧板。
  9. 如权利要求8所述的背板，其特征在于：该底板、该些连接部、该些侧板以及该至少一个架桥结构一体成型。
  10. 如权利要求5所述的背板，其特征在于：该至少一架桥结构的上表面为粗糙表面。
  11. 如权利要求10所述的背板，其特征在于：该至少一架桥结构的上表面设置有微结构或向内凹陷的凹槽结构，以更好的固定光源和导光板。
  12. 如权利要求5所述的背板，其特征在于：该至少一架桥结构与侧板为活动连接固定，以承载搭配不同特性的特定导光板和光源组合。
  13. 一种背光模组，其特征在于：该背光模组包括：
    一个导光板；
    至少一个光源，用以提供光源；以及
    一个背板，其包括：
    一个底板，用以承载该导光板；
    四个侧板，分别垂直于该底板，以构成可供该导光板放置的容纳空间；
    至少一个架桥结构，自该侧板的一个内表面向内延伸一定位置，以承载定位至少一个光源与该导光板。
  14. 如权利要求13所述的背光模组，其特征在于：该导光板包括一个入光面，且该至少一个架桥结构分别设置在正对于该入光面的一个侧板之上，以承载该至少一个光源。
  15. 如权利要求13所述的背光模组，其特征在于：该导光板包括多个入光面，该背光模组包括多个光源，且该背板包括多个架桥结构，这些架桥结构分别设置在正对于该些导光板的多个侧板之上，以分别承载该些光源。
  16. 如权利要求13所述的背光模组，其特征在于：该至少一架桥结构为向外突出的多面立体结构，且其与该光源和导光板相接的上表面为平面结构。
  17. 如权利要求16所述的背光模组，其特征在于：该至少一架桥结构的上表面为粗糙表面。
  18. 如权利要求17所述的背光模组，其特征在于：该至少一架桥结构的上表面设置有微结构或向内凹陷的凹槽结构，以更好的固定光源和导光板。
  19. 如权利要求13所述的背光模组，其特征在于：该底板高于该些侧板的下边缘，且其上表面与该至少一架桥结构的上表面处于同一水平面上。
  20. 如权利要求19所述的背光模组，其特征在于：该背板进一步包括四个连接部，且每个连接部分别设置在该底板和一个对应的侧板之间，以连接该底板和该对应的侧板。
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