WO2013134970A1 - 组合背板及用该组合背板的背光模组 - Google Patents

组合背板及用该组合背板的背光模组 Download PDF

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Publication number
WO2013134970A1
WO2013134970A1 PCT/CN2012/073073 CN2012073073W WO2013134970A1 WO 2013134970 A1 WO2013134970 A1 WO 2013134970A1 CN 2012073073 W CN2012073073 W CN 2012073073W WO 2013134970 A1 WO2013134970 A1 WO 2013134970A1
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WO
WIPO (PCT)
Prior art keywords
substrate
bracket
bottom plate
plate
backlight
Prior art date
Application number
PCT/CN2012/073073
Other languages
English (en)
French (fr)
Inventor
郭仪正
周革革
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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 US13/515,258 priority Critical patent/US8905618B2/en
Publication of WO2013134970A1 publication Critical patent/WO2013134970A1/zh

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Classifications

    • 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
    • G02B6/0085—Means for removing heat created by the light source from the package
    • 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
    • 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 the field of liquid crystal display, and in particular to a combined backplane and a backlight module using the combined backplane. Background technique
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal displays, which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass. There are many vertical and horizontal small wires between the two glass plates.
  • the liquid crystal molecules are controlled to change direction by energization or not, and the light of the backlight module is reflected. Produce a picture. Since the liquid crystal display panel itself does not emit light, it is necessary to display the image normally by the light source provided by the backlight module. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-lit backlight module and a direct-lit backlight module according to different incident positions of the backlight.
  • a backlight such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal display panel, and a surface light source is directly formed and supplied to the liquid crystal display panel.
  • the side-lit backlight module has a backlight such as an LED backlight disposed on the edge of the back panel behind the liquid crystal display panel, and the light emitted by the LED backlight enters the light guide plate from the light incident surface of the light guide plate. After being reflected and diffused, it is emitted from the light-emitting surface of the light guide plate to form a surface light source for being supplied to the liquid crystal display panel.
  • the existing backlight module mainly comprises: a back plate, a light guide plate, a backlight, and an optical film, and the back plate is generally made of the same material, and the material used is aluminum plate, iron plate or plastic. If the entire backplane is made of iron, it is necessary to add heat-dissipating components, which will lead to an increase in cost. If the entire backplane is made of aluminum, no additional heat-dissipating components are needed, although aluminum has better thermal conductivity than iron. However, only part of the entire backplane plays a role of heat dissipation, and the other part does not play a role of heat dissipation but support, which is not conducive to cost control and support of the liquid crystal module.
  • the installation method of the existing backlight is mainly fixed on the back plate by means of thermal conductive tape or screws, and the backlight is fixed on the back plate by thermal conductive tape.
  • the thermal resistance of the thermal conductive tape is large, the thermal conductivity is only 0.9 ⁇ 6W/K*m, the thermal conductivity of aluminum can reach 137W/K*m.
  • the thermal conductivity of the backlight and backplane is very high, the thermal conductivity of the thermal conductive tape is very low, resulting in backlight production. The raw heat cannot be quickly removed.
  • the backlight is fixed on the back plate by screws. In the place where there is no screw lock, there is an air layer between the backlight and the back plate. Due to the poor thermal conductivity of the air, the surface contact thermal resistance increases, so the overall The heat dissipation effect is still very poor. Summary of the invention
  • the object of the present invention is to provide a combined backboard which is formed by splicing a body and a bracket, and has a single structure, high strength, good thermal conductivity and low cost.
  • Another object of the present invention is to provide a backlight module that uses the above-described combined backplane to reduce the production cost while ensuring the quality of the backlight module.
  • the present invention provides a combined backplane, including: a body and a first bracket connected to the body, the body includes a substrate, the first bracket includes a first bottom plate and a vertical connection to the first bottom plate The first side plate is connected to one end of the substrate away from the first side plate, and the substrate and the first frame are made of different materials.
  • the substrate is made of a high strength material, and the first bracket is made of a highly thermally conductive material.
  • the substrate is made of iron iridium, and the first support is made of aluminum iridium.
  • One end of the first bottom plate away from the first side plate is provided with a first bent portion and a first extending portion connected to the first bent portion, the first extending portion is overlapped with one end of the substrate, and passes through Rivets or screws are fixedly attached to the substrate.
  • the body further includes a baffle vertically connected to the other end of the substrate, the baffle being integrally formed of the same material as the substrate.
  • the body further includes a second bracket connected to the other end of the substrate, the second bracket is made of a highly thermally conductive material, and includes a second bottom plate and a second side plate vertically connected to the second bottom plate, The second bottom plate is disposed at one end away from the second side plate, and has a second bent portion and a second extending portion connected to the second bent portion, the second extending portion is overlapped at the other end of the substrate, and is passed through a rivet or A screw is fixedly attached to the substrate.
  • the second bracket is made of a highly thermally conductive material, and includes a second bottom plate and a second side plate vertically connected to the second bottom plate, The second bottom plate is disposed at one end away from the second side plate, and has a second bent portion and a second extending portion connected to the second bent portion, the second extending portion is overlapped at the other end of the substrate, and is passed through a rivet or A screw is fixedly attached to the substrate.
  • the second bracket is made of aluminum sheet metal.
  • the present invention further provides a backlight module, comprising: a combined backplane, a backlight disposed on the combined backplane, a reflective sheet disposed on the combined backplane, a light guide plate disposed on the reflective sheet, and a guide An optical film on the optical plate;
  • the combined backplane includes: a body and a first bracket connected to the body, the body includes a substrate, the first bracket includes a first bottom plate and a first vertical connection to the first bottom plate a side plate, the first bottom plate is connected to one end of the substrate away from the first side plate, the substrate is made of a high-strength material, the first frame is made of a high thermal conductive material;
  • the backlight is a linear LED a light bar, the backlight is fixed to the first bracket by welding.
  • the body further includes a second bracket connected to the substrate, the second bracket being made of high thermal conductivity The material is made, and the backlight is fixed to the second bracket by welding.
  • the substrate is made of iron iridium, and the first and second holders are made of aluminum sheet metal, and the welding method is welding.
  • the combined back plate of the invention is formed by splicing the body and the bracket, the body is made of high-strength material, and the strength of the whole back plate is improved, and the bracket adopts a high thermal conductive material to improve the thermal conductivity of the entire back plate. Improve heat transfer while reducing production costs.
  • the backlight module of the invention improves the strength of the entire backlight module while ensuring the heat conduction effect by using the combined back plate, and fixes the backlight to the bracket made of the high thermal conductive material by welding, so that the backlight and the bracket
  • the seamless connection further improves the thermal conductivity of the backlight module and improves the quality of the backlight module.
  • FIG. 1 is a perspective exploded view of an embodiment of a composite backboard of the present invention
  • Figure 2 is a perspective assembled view of Figure 1;
  • FIG. 3 is a perspective assembled view of another embodiment of the combined backboard of the present invention.
  • FIG. 4 is a cross-sectional view showing the structure of an embodiment of a backlight module of the present invention. detailed description
  • the present invention provides a combined backboard 2, comprising: a body 22 and a first bracket 24 connected to the body 22.
  • the body 22 includes a substrate 222 and a baffle 224 vertically connected to the substrate 222.
  • the substrate 222 and the baffle 224 are integrally formed of the same material.
  • the body 22 is made of a high-strength material. In the present embodiment, the body 22 is made of iron sheet metal, thereby reducing the production cost while ensuring the strength of the entire combined back sheet 2.
  • the first bracket 24 includes a first bottom plate 242 and a first side plate 244 vertically connected to the first bottom plate 242.
  • the first bottom plate 242 is provided with a first bent portion away from the first side plate 244.
  • the first extending portion 248 is horizontally disposed, and the first extending portion 248 is overlapped with one end of the substrate 222 and fixed by a rivet or a screw.
  • the first bracket 24 is made of a highly thermally conductive material.
  • the first bracket 24 is made of aluminum sheet metal, thereby ensuring the heat conduction effect of the entire combined backboard 2.
  • the combined backplane of the present embodiment of the present invention is applied to a side-lit backlight module with a single side light entrance.
  • the present invention is also applicable to a side-lit backlight module that is double-sided.
  • the combined backplane 2 includes: The body 22, and the first bracket 24 connected to the body 22.
  • the body 22 includes a substrate 222 and a second bracket 26 connected to the substrate 222.
  • the first bracket 24 includes a first bottom plate 242 and a first side plate 244 vertically connected to the first bottom plate 242.
  • the first bottom plate 242 is away from the first side plate 244 and has a first fold at one end.
  • the second bracket 26 includes a second bottom plate 262 and a second side plate 264 vertically connected to the second bottom plate 262.
  • the second bottom plate 262 is provided with a second bent portion 266 away from the second side plate 264.
  • the second extending portion 268 is horizontally disposed, and the second extending portion 268 is overlapped with the other end of the substrate 222' and fixed by rivets or screws. Connected to the substrate 222'.
  • the substrate 222 is made of a high-strength material.
  • the substrate 222 is made of ferritic gold, thereby reducing the production cost while ensuring the strength of the entire composite backsheet 2.
  • the first and second brackets 24, 26 are made of a highly thermally conductive material.
  • the first and second brackets 24, 26 are made of aluminum sheet metal, thereby ensuring the entire combined backplane. 2, the thermal conductivity effect.
  • a backlight module using the above-described combined backplane 2.
  • a backlight module according to an embodiment of the present invention includes: a combined backplane 2, a backlight 4 disposed on the combined backplane 2, and a reflective sheet 6 disposed on the combined backplane 2
  • the light guide plate 8 provided on the reflection sheet 6 and the optical film 9 provided on the light guide plate 8.
  • the combination backplane 2 includes: a body 22, and a first bracket 24 connected to the body 22.
  • the body 22 includes a substrate 222 and a second bracket 26 connected to the substrate 222.
  • the first bracket 24 includes a first bottom plate 242 and a first side plate 244 ′ that is vertically connected to the first bottom plate 242 .
  • the first bottom plate 242 is away from the first side plate 244 and has a first fold at one end.
  • a curved portion 246, and a first extending portion 248 connected to the first bent portion 246, the first extending portion 248 is horizontally disposed,
  • the first extending portion 248 is overlapped with one end of the substrate 222 and fixedly connected to the substrate 222 by rivets or screws.
  • the second bracket 26 includes a second bottom plate 262 and a second side plate 264 vertically connected to the second bottom plate 262.
  • the second bottom plate 262 is provided with a second bent portion 266 and a connection away from one end of the second side plate 264.
  • the second extending portion 268 is horizontally disposed on the second extending portion 268 of the second bent portion 266.
  • the second extending portion 268 is overlapped with the other end of the substrate 222, and is fixedly connected by a rivet or a screw.
  • the substrate 222' is made of a high strength material
  • the first and second brackets 24, 26 are made of a highly thermally conductive material.
  • the substrate 222 is made of iron sheet metal, thereby reducing the production cost while ensuring the strength of the entire combined back sheet 2; the first and second brackets 24, 26 are made of aluminum sheet metal. It is made to ensure the thermal conductivity of the entire composite backing plate 2.
  • the backlight 4 is a linear LED strip, and the backlight 4 is respectively fixed to the first bracket 24 and the second bracket 26 by welding, in the example, the soldering method is soldering, thereby making the backlight 4 and the back plate 2, seamlessly connected, further improving the heat conduction effect of the backlight module.
  • the composite backboard of the present invention is formed by splicing the body and the bracket, and the body is made of high-strength material to improve the strength of the entire backboard.
  • the bracket adopts a high thermal conductive material to improve the thermal conductivity of the entire backboard, and is improved.
  • the heat transfer effect reduces production costs.
  • the backlight module of the invention improves the thermal intensity of the backlight module by using the combined back plate, and fixes the backlight to the bracket made of the high thermal conductive material by welding, so that the backlight and the bracket are not
  • the seam connection further improves the heat conduction effect of the backlight module and improves the quality of the backlight module.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种组合背板及用该组合背板的背光模组，该组合背板（2、2'）包括本体（22、22'）及连接于该本体（22、22'）的第一支架（24、24'），所述本体（22、22'）包括基板（222、222'），所述第一支架（24、24'）包括第一底板（242、242'）及垂直连接于第一底板（242、242'）的第一侧板（244、244'），所述第一底板（242、242'）远离第一侧板（244、244'）一端连接在基板（222、222'）一端上，所述基板（222、222'）与第一支架（24、24'）由不同材料制成。本发明组合背板通过本体和支架拼接而成，本体采用高强度材料制成，提高整个背板的强度，支架采用高导热性材料，提高整个背板的导热性，在提高导热效果的同时降低了生产成本。

Description

组合背板及用该组合背板的背光模组 技术领域
本发明涉及液晶显示领域， 尤其涉及一种组合背板及用该组合背板的 背光模组。 背景技术
液晶显示装置（LCD, Liquid Crystal Display )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用。 现有市场上的液晶显示装置大部分 为背光型液晶显示器， 其包括液晶显示面板及背光模组 （ backlight module ) 。 液晶显示面板的工作原理是在两片平行的玻璃当中放置液晶分 子， 两片玻璃中间有许多垂直和水平的细小电线， 通过通电与否来控制液 晶分子改变方向， 将背光模组的光线折射出来产生画面。 由于液晶显示面 板本身不发光， 需要借由背光模组提供的光源来正常显示影像， 因此， 背 光模组成为液晶显示装置的关键零组件之一。 背光模组依照背光源入射位 置的不同分成侧入式背光模组与直下式背光模组两种。 直下式背光模组是 将背光源例如 CCFL(Cold Cathode Fluorescent Lamp , 阴极萤光灯管）或 LED(Light Emitting Diode发光二极管)设置在液晶显示面板后方， 直接形 成面光源提供给液晶显示面板。 而侧入式背光模组是将背光源例如 LED 背光源 （lightbar )设于液晶显示面板侧后方的背板边缘， LED背光源发出 的光线从导光板一侧的入光面进入导光板， 经反射和扩散后从导光板出光 面出射， 以形成面光源提供给液晶显示面板。
现有的背光模组主要包括： 背板、 导光板、 背光源、 及光学膜片， 而 背板一般是由同一种材料制作而成， 所用的材料是铝板、 铁板或塑胶。 如 果整个背板采用铁板来制作， 则还需要增加散热元件， 就会导致成本的增 加； 如果整个背板采用铝板来制作， 则不需额外增加散热元件， 虽然铝导 热效果比铁板的好， 但是整个背板只有一部分发挥散热作用， 另外一部分 没有发挥散热作用而是支撑作用， 这就不利于成本的控制和液晶模组的支 撑固定。
现有背光源的安装方式主要是通过导热胶带或螺丝等方式固定在背板 上， 背光源通过导热胶带固定在背板上， 然而由于导热胶带的热阻较大， 其导热率仅为 0.9 ~ 6W/K*m, 铝的导热率可以达到 137W/K*m, 虽然背光 源和背板的导热率很高， 但是由于导热胶带的导热率很低， 导致背光源产 生的热量不能快速地被导走。 而通过螺丝将背光源固定在背板上， 在没有 螺丝锁附的地方， 背光源和背板之间存在空气层， 由于空气的导热系数更 差， 导致表面接触热阻增大， 所以整体的散热效果仍很差。 发明内容
本发明的目的在于提供一种组合背板， 其由本体和支架拼接而成， 结 构筒单， 强度高， 导热性好， 成本低。
本发明的另一目的在于提供一种背光模组， 其采用上述组合背板， 在 保证背光模组的质量的同时降低了生产成本。
为实现上述目的， 本发明提供一种组合背板， 包括： 本体及连接于该 本体的第一支架， 所述本体包括基板， 所述第一支架包括第一底板及垂直 连接于第一底板的第一侧板， 所述第一底板远离第一侧板一端连接在基板 一端上， 所述基板与第一支架由不同材料制成。
所述基板由高强度材料制成， 所述第一支架由高导热性材料制成。 所述基板由铁钣金制成， 所述第一支架由铝钣金制成。
所述第一底板远离第一侧板一端设有第一折弯部与连接于该第一折弯 部的第一延伸部， 所述第一延伸部搭接于所述基板的一端， 并通过铆釘或 螺釘固定连接于基板上。
所述本体还包括垂直连接于该基板另一端的挡板， 该挡板与基板用相 同材料一体制成。
所述本体还包括连接于该基板另一端的第二支架， 该第二支架由高导 热性材料制成， 其包括第二底板及垂直连接于该第二底板的第二侧板， 所 述第二底板远离第二侧板一端设有第二折弯部与连接于该第二折弯部的第 二延伸部， 所述第二延伸部搭接于所述基板的另一端， 并通过铆釘或螺釘 固定连接于该基板。
所述第二支架由铝钣金制成。
本发明还提供一种背光模组， 包括： 组合背板、 设于该组合背板上的 背光源、 设于该组合背板上的反射片、 设于反射片上的导光板、 及设于导 光板上的光学膜片； 所述组合背板包括： 本体及连接于该本体的第一支 架， 所述本体包括基板， 所述第一支架包括第一底板及垂直连接于第一底 板的第一侧板， 所述第一底板远离第一侧板一端连接在基板一端上， 所述 基板由高强度材料制成， 所述第一支架由高导热性材料制成； 所述背光源 为线性 LED灯条， 该背光源以熔接方式固定于该第一支架上。
所述本体还包括连接于所述基板的第二支架， 该第二支架由高导热性 材料制成， 所述背光源以熔接方式固定于该第二支架上。
所述基板由铁钣金制成， 所述第一与第二支架由铝钣金制成， 所述熔 接方式为焊接。
本发明的有益效果： 本发明组合背板通过本体和支架拼接而成， 本体 采用高强度材料制成， 提高整个背板的强度， 支架采用高导热性材料， 提 高整个背板的导热性， 在提高导热效果的同时降低了生产成本。 本发明背 光模组通过采用组合背板在保证导热效果的同时提高了整个背光模组的强 度， 且将背光源以熔接方式固定于高导热性材料制成的支架上， 使得背光 源与该支架无缝连接， 进一步提高背光模组的导热效果， 提高了背光模组 的品质。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 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。
附图中，
图 1为本发明组合背板一实施例的立体分解示意图；
图 2为图 1的立体组合图；
图 3本发明组合背板另一实施例的立体组合示意图；
图 4为本发明背光模组一实施例的结构的剖面示意图。 具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
请参与图 1及图 2, 本发明提供一种组合背板 2, 包括： 本体 22及连 接于该本体 22的第一支架 24。
所述本体 22包括基板 222及垂直连接于该基板 222的挡板 224, 该基 板 222 与挡板 224 由相同材料一体制成。 所述本体 22 由高强度材料制 成， 在本实施例中， 该本体 22由铁钣金制成， 进而在保证整个组合背板 2 的强度的同时降低生产成本。
所述第一支架 24 包括第一底板 242及垂直连接于第一底板 242的第 一侧板 244, 所述第一底板 242 远离第一侧板 244 一端设有第一折弯部 246与连接于该第一折弯部 246的第一延伸部 248, 该第一延伸部 248水 平设置， 所述第一延伸部 248搭接于所述基板 222的一端， 并通过铆釘或 螺釘固定连接于该基板 222, 所述第一支架 24由高导热性材料制成， 在本 实施例中， 该第一支架 24 由铝钣金制成， 进而保证整个组合背板 2 的导 热效果。
本发明本实施例的组合背板应用于单侧入光的侧入式背光模组。 而本 发明也可应用于双侧入光的侧入式背光模组中。
如图 3所示， 其为用于双侧入光的侧入式背光模组中的本发明另一实 施例的组合背板 2，， 在本实施例中， 该组合背板 2，包括： 本体 22，、 及连 接于该本体 22，的第一支架 24，。 所述本体 22，包括基板 222，及连接于该基 板 222，的第二支架 26。 所述第一支架 24，包括第一底板 242，及垂直连接于 第一底板 242，的第一侧板 244，， 所述第一底板 242，远离第一侧板 244，一端 设有第一折弯部 246，及连接于该第一折弯部 246，的第一延伸部 248，， 该第 一延伸部 248，水平设置， 所述第一延伸部 248，搭接于所述基板 222，的一 端， 并通过铆釘或螺釘固定连接于该基板 222，。 所述第二支架 26 包括第 二底板 262及垂直连接于该第二底板 262的第二侧板 264, 所述第二底板 262 远离第二侧板 264 —端设有第二折弯部 266 及连接于该第二折弯部 266的第二延伸部 268, 该第二延伸部 268水平设置， 所述第二延伸部 268 搭接于所述基板 222'的另一端， 并通过铆釘或螺釘固定连接于该基板 222'。
所述基板 222，由高强度材料制成， 在本实施例中， 该基板 222，由铁钣 金制成， 进而在保证整个组合背板 2，的强度的同时降低生产成本。
所述第一与第二支架 24，、 26 由高导热性材料制成， 在本实施例中， 该第一与第二支架 24，、 26 由铝钣金制成， 进而保证整个组合背板 2，的导 热效果。
本发明提供一种使用上述组合背板 2，的背光模组。 如图 4所示， 本发 明一实施例的背光模组包括： 组合背板 2，、 设于该组合背板 2，上的背光源 4、 设于该组合背板 2，上的反射片 6、 设于反射片 6上的导光板 8、 及设于 导光板 8上的光学膜片 9。
所述组合背板 2，包括： 本体 22，及连接于该本体 22，的第一支架 24，， 所述本体 22，包括基板 222，及连接于所述基板 222，的第二支架 26。 所述 第一支架 24，包括第一底板 242，及垂直连接于第一底板 242，的第一侧板 244' , 所述第一底板 242，远离第一侧板 244，一端设有第一折弯部 246，及连 接于该第一折弯部 246，的第一延伸部 248，， 该第一延伸部 248，水平设置， 所述第一延伸部 248，搭接于所述基板 222，的一端， 并通过铆釘或螺釘固定 连接于该基板 222，。 所述第二支架 26 包括第二底板 262及垂直连接于该 第二底板 262的第二侧板 264, 所述第二底板 262远离第二侧板 264一端 设有第二折弯部 266及连接于该第二折弯部 266的第二延伸部 268, 该第 二延伸部 268水平设置， 所述第二延伸部 268搭接于所述基板 222，的另一 端， 并通过铆釘或螺釘固定连接于该基板 222'。 所述基板 222'由高强度材 料制成， 所述第一与第二支架 24，、 26由高导热性材料制成。
在本实施例中， 该基板 222，由铁钣金制成， 进而在保证整个组合背板 2，的强度的同时降低生产成本； 所述第一与第二支架 24，、 26 由铝钣金制 成， 进而保证整个组合背板 2，的导热效果。
所述背光源 4为线性 LED灯条， 该背光源 4分别以熔接方式固定于 该第一支架 24，与第二支架 26上， 在本实例中， 所述熔接方式为焊接， 进 而使得背光源 4与背板 2，无缝连接， 进一步提高背光模组的导热效果。
综上所述， 本发明组合背板通过本体和支架拼接而成， 本体采用高强 度材料制成， 提高整个背板的强度， 支架采用高导热性材料， 提高整个背 板的导热性， 在提高导热效果的同时降低了生产成本。 本发明背光模组通 过采用组合背板保证导热效果的同时提高了整个背光模组的强度， 且将背 光源以熔接方式固定于高导热性材料制成的支架上， 使得背光源与该支架 无缝连接， 进一步提高背光模组的导热效果， 提高了背光模组的品质。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
1、 一种组合背板， 包括： 本体及连接于该本体的第一支架， 所述本 体包括基板， 所述第一支架包括第一底板及垂直连接于第一底板的第一侧 板， 所述第一底板远离第一侧板一端连接在基板一端上， 所述基板与第一 支架由不同材料制成， 所述基板由高强度材料制成， 所述第一支架由高导 热性材料制成。
2、 如权利要求 1所述的组合背板， 其中， 所述基板由铁钣金制成， 所 述第一支架由铝钣金制成。
3、 如权利要求 1 所述的组合背板， 其中， 所述第一底板远离第一侧 板一端设有第一折弯部与连接于该第一折弯部的第一延伸部， 所述第一延 伸部搭接于所述基板的一端， 并通过铆釘或螺釘固定连接于基板上。
4、 如权利要求 1 所述的组合背板， 其中， 所述本体还包括垂直连接 于该基板另一端的挡板， 该挡板与基板用相同材料一体制成。
5、 如权利要求 1 所述的组合背板， 其中， 所述本体还包括连接于该 基板另一端的第二支架， 该第二支架由高导热性材料制成， 其包括第二底 板及垂直连接于该第二底板的第二侧板， 所述第二底板远离第二侧板一端 设有第二折弯部与连接于该第二折弯部的第二延伸部， 所述第二延伸部搭 接于所述基板的另一端， 并通过铆釘或螺釘固定连接于该基板。
6、 如权利要求 5 所述的组合背板， 其中， 所述第二支架由铝钣金制 成。
7、 一种背光模组， 包括： 组合背板、 设于该组合背板上的背光源、 设于该组合背板上的反射片、 设于反射片上的导光板、 及设于导光板上的 光学膜片； 所述组合背板包括： 本体及连接于该本体的第一支架， 所述本 体包括基板， 所述第一支架包括第一底板及垂直连接于第一底板的第一侧 板， 所述第一底板远离第一侧板一端连接在基板一端上， 所述基板由高强 度材料制成， 所述第一支架由高导热性材料制成； 所述背光源为线性 LED 灯条， 该背光源以熔接方式固定于该第一支架上。
8、 如权利要求 7 所述的背光模组， 其中， 所述基板由铁钣金制成， 所述第一支架由铝钣金制成， 所述熔接方式为焊接。
9、 如权利要求 7 所述的背光模组， 其中， 所述本体还包括连接于所 述基板的第二支架， 该第二支架由高导热性材料制成， 所述背光源以熔接 方式固定于该第二支架上。 、 如权利要求 9所述的背光模组， 其中， 所述第二支架由铝钣金制 熔接方式为焊接。
PCT/CN2012/073073 2012-03-13 2012-03-26 组合背板及用该组合背板的背光模组 WO2013134970A1 (zh)

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