WO2014019258A1 - 侧入式背光模组 - Google Patents

侧入式背光模组 Download PDF

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Publication number
WO2014019258A1
WO2014019258A1 PCT/CN2012/080197 CN2012080197W WO2014019258A1 WO 2014019258 A1 WO2014019258 A1 WO 2014019258A1 CN 2012080197 W CN2012080197 W CN 2012080197W WO 2014019258 A1 WO2014019258 A1 WO 2014019258A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight module
circuit board
light guide
holes
guide plate
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/080197
Other languages
English (en)
French (fr)
Inventor
胡哲彰
方林冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/699,712 priority Critical patent/US9022636B2/en
Publication of WO2014019258A1 publication Critical patent/WO2014019258A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02B6/009—Positioning aspects of the light source 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 side-lit backlight module. Background technique
  • Liquid crystal display has many advantages such as thin body, low power consumption, low radiation, etc., and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight-type liquid crystal display devices, which include a liquid crystal panel and a backlight module.
  • the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, control the liquid crystal molecules to change direction by energizing or not the glass substrate, and refract the light of the backlight module to produce a picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module needs to be used to display the image normally. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-in backlight module and a direct-lit backlight module according to different incident positions of the light source.
  • a light source such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel, and a surface light source is directly formed and supplied to the liquid crystal panel.
  • the side-lit backlight module has a backlight LED strip (Light bar) disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is lighted from the side of the light guide plate (LGP). The surface enters the light guide plate, is reflected and diffused, and is emitted from the light exit surface of the light guide plate, and then is supplied to the liquid crystal panel through the optical film group to form a surface light source.
  • LGP light guide plate
  • the edge-lit backlight module includes: a back sheet 100 , a reflective sheet 200 disposed in the back sheet 100 , a light guide plate 300 disposed on the reflective sheet 200 , and a backlight 400 disposed in the back sheet 100 . And a heat sink 500 disposed between the backlight 400 and the back plate 100.
  • the backplane 100 includes a bottom plate 102 and a side plate 104 connected to the bottom plate 102.
  • the backlight 400 is mounted on the heat sink 500 by a heat sink (not shown).
  • the heat sink 500 is generally extruded by aluminum, and is fixed to the back plate by screws.
  • the heat generated by the backlight 400 is transmitted to the bottom plate 102 of the back plate 100 through the heat sink 500, and heat is exchanged with the outside air through the back plate 100.
  • the thermal conductivity of the thermal adhesive is not high, the heat dissipation effect of the backlight module is not good, which affects the quality of the backlight module.
  • a boss 502 is disposed on the heat sink 500 , and the reflective sheet 200 is carried on the boss 502 , and the light guide plate 300 is carried on the reflective sheet 200 .
  • the formation of the boss 502 increases the use of the aluminum extruded material, increasing the production This increases the weight of the backlight module, which is not conducive to the weight reduction of the backlight module.
  • the object of the present invention is to provide a side-in type backlight module, which has a single structure, good heat dissipation performance and low cost.
  • the present invention provides a side-lit backlight module, including: a backplane, a light guide plate disposed in the backplane, and a backlight mounted on the backplane, wherein the backlight includes a circuit board and is disposed on the backplane
  • the circuit board is electrically connected to the plurality of LED lights of the circuit board
  • the circuit board includes a mounting portion and a bent portion connected to the mounting portion, the LED lamp is disposed on the mounting portion, the bending The portion is connected to the back plate, and the light guide plate is carried on the bent portion.
  • the bent portion has a flat shape and is vertically connected to the mounting portion.
  • the side-lit backlight module further includes a rubber strip disposed on the bent portion, the rubber strip is provided with a plurality of stepped holes, and the bent portion is provided with a plurality of first through holes corresponding to the stepped holes.
  • the back plate is provided with a plurality of first threaded holes corresponding to the plurality of through holes, and the strip, the bent portion and the back plate are connected together by a screw lock, and the light guide plate is carried on the strip.
  • the bent portion includes a first connecting portion, a convex portion connected to the first connecting portion, and a second connecting portion connected to the protruding portion, the first connecting portion being vertically connected to the mounting portion, The second connecting portion is coupled to the back plate.
  • the second connecting portion is provided with a plurality of second through holes
  • the second plate is provided with a plurality of second threaded holes corresponding to the second through holes
  • the second connecting portion is connected to the back plate by screwing
  • the light guide plate is carried on the convex portion.
  • the bent portion includes a third connecting portion, a fourth connecting portion vertically connected to the third connecting portion, and a supporting portion vertically connected to the fourth connecting portion, wherein the third connecting portion is vertically connected to the mounting portion.
  • the support portion is coupled to the back plate.
  • the support portion is provided with a plurality of third threaded holes
  • the back plate is provided with a plurality of third through holes corresponding to the third threaded holes, and the support portion and the back plate are connected by screw locking, the guide The light plate is carried on the support portion.
  • the circuit board is a metal based printed circuit board.
  • the backboard includes a bottom plate and a side plate connected to the bottom plate, and the bent portion is connected to the bottom plate of the back plate.
  • the side-lit backlight module further includes a reflective sheet disposed between the light guide plate and the back plate and an optical film set disposed on the light guide plate.
  • the present invention also provides a side-lit backlight module, comprising: a back plate, a light guide plate disposed in the back plate, and a backlight mounted on the back plate, wherein the backlight comprises a circuit board and is disposed on the circuit board a plurality of LED lights electrically connected to the circuit board, the circuit board includes a mounting portion and a bent portion connected to the mounting portion, the LED lamp is disposed on the mounting portion, and the bent portion is connected to the The light guide plate is carried on the bent portion;
  • bent portion has a flat shape and is vertically connected to the mounting portion
  • the utility model further includes a rubber strip disposed on the bent portion, wherein the rubber strip is provided with a plurality of stepped holes, wherein the bent portion is provided with a plurality of first through holes corresponding to the stepped holes, and the back plate corresponds to a plurality of through holes
  • the hole is provided with a plurality of first threaded holes, the rubber strip, the bent portion and the back plate are connected together by a screw lock, and the light guide plate is carried on the rubber strip;
  • circuit board is a metal-based printed circuit board
  • the backboard includes a bottom plate and a side plate connected to the bottom plate, and the bent portion is connected to the bottom plate of the back plate; , ' : , , , , ' ,
  • the side-entry backlight module of the present invention replaces the heat dissipation of the metal-based printed circuit board of the prior art through the thermal adhesive to the aluminum extrusion by the use of the metal-based printed circuit board having the bent portion
  • the method improves the heat dissipation effect and improves the quality of the backlight module, and the bent portion of the metal-based printed circuit board can have various shapes to support the light guide plate, thereby avoiding the use of the aluminum extrusion in the prior art.
  • the production cost is greatly reduced.
  • FIG. 1 is a perspective view showing a three-dimensional structure of a side-lit backlight module in the prior art
  • FIG. 2 is another schematic structural view of a side-lit backlight module in the prior art
  • FIG. 3 is another schematic perspective structural view of a side-entry backlight module in the prior art
  • FIG. 4 is a perspective structural view of a first embodiment of a side-lit backlight module of the present invention
  • 5 is a schematic view showing the assembled structure of the backplane and the backlight in FIG. 4;
  • FIG. 6 is a perspective view of a second embodiment of a side-lit backlight module of the present invention.
  • FIG. 7 is a partial cross-sectional view of FIG.
  • FIG. 8 is a schematic perspective structural view of a third embodiment of a side-lit backlight module of the present invention. detailed description
  • the present invention provides a side-in type backlight module, comprising: a back plate 2, a light guide plate 4 disposed in the back plate 2, and a backlight 6 mounted on the back plate 2.
  • the backboard 2 includes a bottom plate 22 and a side plate (not shown) connected to the bottom plate 22.
  • the backlight 6 includes a circuit board 62 and a plurality of LED lamps 64 disposed on the circuit board 62 and electrically connected to the circuit board 62.
  • the circuit board 62 is a metal-based printed circuit board (MCPCB), and includes a mounting portion 622 and a bent portion 624 connected to the mounting portion 622.
  • the LED lamp 64 is disposed on the mounting portion 622.
  • the bent portion 624 is connected to the bottom plate 22 of the backboard 2, and the backlight 6 is mounted on the backboard 2, and the light guide plate 4 is carried on the bent portion 624.
  • the side-entry backlight module further includes a strip 8 disposed on the bent portion 624.
  • the bent portion 624 has a flat shape and is vertically connected to the mounting portion 622.
  • the rubber strip 8 is provided with a plurality of stepped holes 82, and the bent portion 624 corresponds to the stepped holes.
  • the first bottom hole 626 is provided with a plurality of first through holes 626.
  • the bottom plate 22 of the back plate 2 is provided with a plurality of first threaded holes 222 corresponding to the plurality of first through holes 626.
  • the strip 8 , the bent portion 624 and the back plate 2 The bottom plate 22 is locked and coupled together by screws 240, and the backlight 6 is mounted on the back plate 2.
  • the light guide plate 4 is carried on the strip 8 , and the screw cap 242 of the screw 240 is completely received in the stepped hole 82 of the strip 8 and does not interfere with the light guide plate 4 .
  • the screw cap 242 is interference-fitted with the stepped hole 82 to prevent the screw 240 from sliding out and scratching the light guide plate 4 due to long-term use.
  • the backlight 6 and the strip 8 are fixedly connected to the backboard 2 by screws 240, thereby avoiding the complicated process caused by fixing the backlight and the strip respectively in the prior art.
  • the production process is completed.
  • the circuit board 62 of the backlight 6 directly exchanges heat with the outside, the heat dissipation effect is increased, and the backlight module for the 32-inch liquid crystal display device is taken as an example to describe in detail the side-entry backlight module of the present invention.
  • the normal MCPCB represents a backlight module using aluminum extrusion heat dissipation in the prior art
  • the bent MCPCB represents a metal-based printed circuit board having a bent portion according to the present invention.
  • the heat dissipation effect comparison data is as follows: Normal MCPCB and bent MCPCB temperature comparison
  • the price comparison data is as follows:
  • the side-lit backlight module of the present invention has a great advantage in terms of heat dissipation effect and cost compared with the side-entry backlight module of the prior art.
  • the side-lit backlight module of the present invention further includes a reflective sheet 9 disposed between the light guide plate 4 and the bottom plate 22 of the back plate 2, and an optical film set (not shown) disposed on the light guide plate 4, which are all existing Technology, no further description here.
  • FIG. 6 is a schematic structural diagram of a second embodiment of a side-lit backlight module according to the present invention.
  • the bent portion 624 includes a first connecting portion 625 and is connected to the first a protruding portion 626 of the connecting portion 625 and a second connecting portion 627 connected to the protruding portion 626, the first connecting portion 625 is perpendicularly connected to the mounting portion 622, and the second connecting portion 627 is connected to the back portion The bottom plate 22 of the board 2.
  • the second connecting portion 627 is provided with a plurality of second through holes 628.
  • the bottom plate 22 of the back plate 2 is provided with a plurality of second threaded holes 224 corresponding to the second through holes 628, and the second connecting portion 627 is The backboard 2 is locked and coupled together by screws 240, and the backlight 6 is mounted on the backboard 2.
  • the protruding portion 626 is disposed from the first connecting portion 625 toward the light guide plate 4, and the light guide plate 4 is carried on the protruding portion 626.
  • the strip may be omitted. Further enhance the thermal conductivity and reduce production costs.
  • the bent portion 624" includes a third connecting portion 632 and is vertically connected to the third connection. a fourth connecting portion 634 of the connecting portion 632 and a supporting portion 636 vertically connected to the fourth connecting portion 634.
  • the third connecting portion 632 is perpendicularly connected to the mounting portion 622.
  • the supporting portion 636 is connected to the backboard 2 The bottom plate 22.
  • the support portion 636 is provided with a plurality of third threaded holes 638.
  • the bottom plate 22 of the back plate 2 is provided with a plurality of third through holes 226 corresponding to the third threaded holes 638.
  • the support portion 636 and the back plate 2 pass through.
  • the screws 240 are snap-fitted together to mount the backlight 6" to the backing plate 2.
  • the light guide plate 4 is carried on the support portion 636, and the mounting portion 622 and the third and fourth connecting portions 632 and 634 form a cavity to facilitate air convection, thereby enhancing the heat dissipation effect.
  • the side-lit backlight module of the present invention replaces the heat-dissipation method of the metal-based printed circuit board with the bent portion on the aluminum extrusion by the use of the thermal conductive adhesive in the prior art by using the metal-based printed circuit board having the bent portion.
  • the heat dissipation effect is enhanced, the quality of the backlight module is improved, and the bent portion of the metal-based printed circuit board can be various shapes to support the light guide plate, thereby avoiding the use of the aluminum extrusion in the prior art. To a lesser extent, production costs are reduced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Description

侧入式背光模组 技术领域
本发明涉及液晶显示领域， 尤其涉及一种侧入式背光模组。 背景技术
液晶显示装置（LCD, Liquid Crystal Display )具有机身薄、 省电、 辐 射低等众多优点， 得到了广泛的应用。 现有市场上的液晶显示装置大部分 为背光形液晶显示装置， 其包括液晶面板及背光模组 （ backlight module ) 。 液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分 子， 通过玻璃基板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组件之 一。 背光模组依照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发光光源例如 CCFL(Cold Cathode Fluorescent Lamp, 阴极荧光灯管）或 LED(Light Emitting Diode, 发光二极 管)设置在液晶面板后方， 直接形成面光源提供给液晶面板。 而侧入式背光 模组是将背光源 LED灯条（Light bar )设于液晶面板侧后方的背板边缘， LED灯条发出的光线从导光板（LGP, Light Guide Plate )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射出， 再经由光学膜片组以形 成面光源提供给液晶面板。
请参阅图 1 , 侧入式背光模组包括： 背板 100、 设置于背板 100 内的 反射片 200、 设置于反射片 200上的导光板 300、 设置于背板 100 内的背 光源 400、 及设于背光源 400与背板 100之间的散热片 500。 背板 100包 括底板 102及连接于底板 102的侧板 104, 背光源 400通过散热胶 (未图 示）安装于散热片 500上， 散热片 500—般为铝挤， 其通过螺釘固定于背 板 100的底板 102上， 背光源 400发出的热量通过散热片 500传递至背板 100 的底板 102, 通过背板 100 与外界的空气进行热交换散热。 然而， 由 于散热胶的导热系数不高， 进而导致背光模组的散热效果并不良好， 影响 背光模组的品质。
另， 请参阅图 2, 为了支撑导光板 300, 会在散热片 500，上设置凸台 502, 所述反射片 200承载于该凸台 502上， 导光板 300承载于该反射片 200上。 然而， 该凸台 502 的形成增加了铝挤材料的使用， 增加了生产成 本， 且增加了背光模组的重量， 不利于背光模组轻量化。
请参阅图 3, 为了解决上述问题， 本领域技术人员用胶条 600贴附于 凸台 502，上， 以补充部分高度， 进而较少铝挤材料的用量， 进而降低背光 模组的重量， 然而， 该胶条 600需要备胶以固定， 增加了生产制程， 进而 导致生产成本增加。 发明内容
本发明的目的在于提供一种侧入式背光模组， 其结构筒单， 散热性能 好， 成本低。
为实现上述目的， 本发明提供一种侧入式背光模组， 包括： 背板、 设 于背板内的导光板及安装于背板上的背光源， 所述背光源包括电路板及设 于该电路板并电性连接于该电路板的数个 LED 灯， 所述电路板包括安装 部及连接于该安装部的折弯部， 所述 LED 灯设于该安装部上， 所述折弯 部连接于所述背板上， 所述导光板承载于该折弯部上。
所述折弯部呈平板形， 其垂直连接于所述安装部。
所述侧入式背光模组还包括设于折弯部上的胶条， 所述胶条上设有数 个台阶孔， 所述折弯部对应该些台阶孔设有数个第一通孔， 所述背板对应 该数个通孔设有数个第一螺纹孔， 所述胶条、 折弯部及背板通过螺釘锁合 连接在一起， 所述导光板承载于该胶条上。
所述折弯部包括第一连接部、 连接于该第一连接部的凸起部及连接于 凸起部的第二连接部， 所述第一连接部垂直连接于所述安装部， 所述第二 连接部连接于所述背板。
所述第二连接部上设有数个第二通孔， 所述背板对应该些第二通孔设 有数个第二螺纹孔， 所述第二连接部与背板通过螺釘锁合连接在一起， 所 述导光板承载于该凸起部上。
所述折弯部包括第三连接部、 垂直连接于该第三连接部的第四连接部 及垂直连接于该第四连接部的支撑部， 所述第三连接部垂直连接于安装 部， 所述支撑部连接于所述背板。
所述支撑部上设有数个第三螺纹孔， 所述背板对应该些第三螺纹孔设 有数个第三通孔， 所述支撑部与背板通过螺釘锁合连接在一起， 所述导光 板承载于该支撑部上。
所述电路板为金属基印刷电路板。
所述背板包括底板及连接于底板的侧板， 所述折弯部连接于背板的底 板上。 所述侧入式背光模组还包括设于导光板与背板底板之间的反射片及设 于导光板上的光学膜片组。
本发明还提供一种侧入式背光模组， 包括： 背板、 设于背板内的导光 板及安装于背板上的背光源， 所述背光源包括电路板及设于该电路板并电 性连接于该电路板的数个 LED 灯， 所述电路板包括安装部及连接于该安 装部的折弯部， 所述 LED 灯设于该安装部上， 所述折弯部连接于所述背 板上， 所述导光板承载于该折弯部上；
其中， 所述折弯部呈平板形， 其垂直连接于所述安装部；
还包括设于折弯部上的胶条， 所述胶条上设有数个台阶孔， 所述折弯 部对应该些台阶孔设有数个第一通孔， 所述背板对应该数个通孔设有数个 第一螺纹孔， 所述胶条、 折弯部及背板通过螺釘锁合连接在一起， 所述导 光板承载于该胶条上；
其中， 所述电路板为金属基印刷电路板；
其中， 所述背板包括底板及连接于底板的侧板， 所述折弯部连接于背 板的底板上； 片组。、 ' : 、 、 ， ' 、
本发明的有益效果： 本发明侧入式背光模组， 通过具有折弯部的金属 基印刷电路板的使用， 代替现有技术中金属基印刷电路板通过导热胶粘贴 在铝挤上的散热方式， 增强了散热效果， 提升了背光模组的品质， 且， 该 金属基印刷电路板的折弯部可为各种形状以支撑导光板， 避免了现有技术 中铝挤的使用， 在很大程度上降低了生产成本。
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为现有技术中侧入式背光模组的立体结构示意图；
图 2为现有技术中侧入式背光模组的另一立体结构示意图；
图 3为现有技术中侧入式背光模组的又一立体结构示意图；
图 4为本发明侧入式背光模组第一实施例的立体结构示意图； 图 5为图 4中背板与背光源的组装结构示意图；
图 6为本发明侧入式背光模组第二实施例的立体结构示意图； 图 7为图 6的局部剖面图；
图 8为本发明侧入式背光模组第三实施例的立体结构示意图。 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。
请参阅图 4 及图 5 , 本发明提供一种侧入式背光模组， 包括： 背板 2、 设于背板 2内的导光板 4及安装于背板 2上的背光源 6。
所述背板 2包括底板 22及连接于底板 22的侧板（未图示） 。
所述背光源 6包括电路板 62及设于该电路板 62并电性连接于该电路 板 62的数个 LED灯 64。
所述电路板 62为金属基印刷电路板 ( Metal Core PCB , MCPCB ) , 其包括安装部 622及连接于该安装部 622的折弯部 624, 所述 LED灯 64 设于该安装部 622上， 所述折弯部 624连接于所述背板 2的底板 22上， 进而将背光源 6安装于背板 2上， 所述导光板 4承载于该折弯部 624上。
在本实施例中， 所述侧入式背光模组还包括设于折弯部 624上的胶条 8, 所述折弯部 624呈平板形， 其垂直连接于所述安装部 622。
所述胶条 8 上设有数个台阶孔 82, 所述折弯部 624对应该些台阶孔
82设有数个第一通孔 626, 所述背板 2的底板 22对应该数个第一通孔 626 设有数个第一螺纹孔 222, 所述胶条 8、 折弯部 624及背板 2的底板 22通 过螺釘 240锁合连接在一起， 进而将背光源 6安装于背板 2上。
在本实施例中， 所述导光板 4承载于该胶条 8上， 所述螺釘 240的螺 釘帽 242完全容置于所述胶条 8的台阶孔 82内， 不会干涉到导光板 4, 优 选的， 该螺釘帽 242与台阶孔 82过盈配合， 避免由于长期使用而使得螺 釘 240滑动旋出， 而刮伤导光板 4。
本实施例的侧入式背光模组， 通过螺釘 240将背光源 6、 胶条 8 固定 连接于背板 2上， 避免了现有技术中对背光源及胶条分别固定而导致的繁 杂制程， 筒化了生产制程。 同时， 由于背光源 6 的电路板 62直接与外界 进行热交换， 增加了散热效果， 以用于 32inch的液晶显示装置的背光模组 为例， 来详细说明本发明的侧入式背光模组的技术效果：
请参阅表 1 , 其中， 正常 MCPCB表示现有技术中的采用铝挤散热的 背光模组； 折弯形 MCPCB表示本发明具有折弯部的金属基印刷电路板制 成的背光模组， 其散热效果对比数据如下表: 正常 MCPCB与折弯形 MCPCB温度对比
Figure imgf000007_0001
其价格对比数据如下表：
表 2, 正常 MCPCB与折弯形 MCPCB成本消耗对比
Figure imgf000007_0002
可见， 本发明侧入式背光模组对比现有技术中的侧入式背光模组， 在 散热效果及成本上均具有艮大的优势。
本发明侧入式背光模组还包括设于导光板 4与背板 2底板 22之间的 反射片 9及设于导光板 4上的光学膜片组（未图示） ， 其均为现有技术， 在此不作赘述。
请参阅图 6及图 7, 为本发明侧入式背光模组第二实施例的结构示意 图， 在本实施例中， 所述折弯部 624，包括第一连接部 625、 连接于该第一 连接部 625的凸起部 626及连接于凸起部 626的第二连接部 627, 所述第 一连接部 625垂直连接于所述安装部 622, 所述第二连接部 627连接于所 述背板 2的底板 22。
所述第二连接部 627上设有数个第二通孔 628 , 所述背板 2的底板 22 对应该些第二通孔 628设有数个第二螺纹孔 224, 所述第二连接部 627与 背板 2通过螺釘 240锁合连接在一起， 进而将背光源 6，安装于背板 2上。
在本实施例中， 所述凸起部 626由第一连接部 625朝向导光板 4凸起 设置， 所述导光板 4承载于该凸起部 626 上， 在本实施例中可以省略胶 条， 进一步增强导热效果及降低生产成本。
请参阅图 8 , 为本发明侧入式背光模组第三实施例的结构示意图， 在 本实施例中， 所述折弯部 624"包括第三连接部 632、 垂直连接于该第三连 接部 632 的第四连接部 634 及垂直连接于该第四连接部 634 的支撑部 636, 所述第三连接部 632垂直连接于安装部 622, 所述支撑部 636连接于 所述背板 2的底板 22。
所述支撑部 636上设有数个第三螺纹孔 638, 所述背板 2的底板 22对 应该些第三螺纹孔 638设有数个第三通孔 226, 所述支撑部 636与背板 2 通过螺釘 240锁合连接在一起， 进而将背光源 6"安装于背板 2上。
在本实施例中， 所述导光板 4 承载于支撑部 636 上， 所述安装部 622、 第三与第四连接部 632、 634形成一腔体， 有利于空气对流， 进而增 强散热效果。
综上所述， 本发明侧入式背光模组， 通过具有折弯部的金属基印刷电 路板的使用， 代替现有技术中金属基印刷电路板通过导热胶粘贴在铝挤上 的散热方式， 增强了散热效果， 提升了背光模组的品质， 且， 该金属基印 刷电路板的折弯部可为各种形状以支撑导光板， 避免了现有技术中铝挤的 使用， 在很大程度上降低了生产成本。
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、 一种侧入式背光模组， 包括： 背板、 设于背板内的导光板及安装 于背板上的背光源， 所述背光源包括电路板及设于该电路板并电性连接于 该电路板的数个 LED 灯， 所述电路板包括安装部及连接于该安装部的折 弯部， 所述 LED 灯设于该安装部上， 所述折弯部连接于所述背板上， 所 述导光板承载于该折弯部上。
2、 如权利要求 1 所述的侧入式背光模组， 其中， 所述折弯部呈平板 形， 其垂直连接于所述安装部。
3、 如权利要求 2 所述的侧入式背光模组， 还包括设于折弯部上的胶 条， 所述胶条上设有数个台阶孔， 所述折弯部对应该些台阶孔设有数个第 一通孔， 所述背板对应该数个通孔设有数个第一螺纹孔， 所述胶条、 折弯 部及背板通过螺釘锁合连接在一起， 所述导光板承载于该胶条上。
4、 如权利要求 1 所述的侧入式背光模组， 其中， 所述折弯部包括第 一连接部、 连接于该第一连接部的凸起部及连接于凸起部的第二连接部， 所述第一连接部垂直连接于所述安装部， 所述第二连接部连接于所述背 板。
5、 如权利要求 4 所述的侧入式背光模组， 其中， 所述第二连接部上 设有数个第二通孔， 所述背板对应该些第二通孔设有数个第二螺纹孔， 所 述第二连接部与背板通过螺釘锁合连接在一起， 所述导光板承载于该凸起 部上。
6、 如权利要求 1 所述的侧入式背光模组， 其中， 所述折弯部包括第 三连接部、 垂直连接于该第三连接部的第四连接部及垂直连接于该第四连 接部的支撑部， 所述第三连接部垂直连接于安装部， 所述支撑部连接于所 述背板。
7、 如权利要求 6 所述的侧入式背光模组， 其中， 所述支撑部上设有 数个第三螺纹孔， 所述背板对应该些第三螺纹孔设有数个第三通孔， 所述 支撑部与背板通过螺釘锁合连接在一起， 所述导光板承载于该支撑部上。
8、 如权利要求 1 所述的侧入式背光模组， 其中， 所述电路板为金属 基印刷电路板。
9、 如权利要求 1 所述的侧入式背光模组， 其中， 所述背板包括底板 及连接于底板的侧板， 所述折弯部连接于背板的底板上。
10、 如权利要求 9所述的侧入式背光模组， 还包括设于导光板与背板 底板之间的反射片及设于导光板上的光学膜片组。
11、 一种侧入式背光模组， 包括： 背板、 设于背板内的导光板及安装 于背板上的背光源， 所述背光源包括电路板及设于该电路板并电性连接于 该电路板的数个 LED 灯， 所述电路板包括安装部及连接于该安装部的折 弯部， 所述 LED 灯设于该安装部上， 所述折弯部连接于所述背板上， 所 述导光板承载于该折弯部上；
其中， 所述折弯部呈平板形， 其垂直连接于所述安装部；
还包括设于折弯部上的胶条， 所述胶条上设有数个台阶孔， 所述折弯 部对应该些台阶孔设有数个第一通孔， 所述背板对应该数个通孔设有数个 第一螺纹孔， 所述胶条、 折弯部及背板通过螺釘锁合连接在一起， 所述导 光板承载于该胶条上；
其中， 所述电路板为金属基印刷电路板；
其中， 所述背板包括底板及连接于底板的侧板， 所述折弯部连接于背 板的底板上； 片组。、 ' : 、 、 ， ' 、
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