WO2013152521A1 - 直下式背光模组 - Google Patents

直下式背光模组 Download PDF

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Publication number
WO2013152521A1
WO2013152521A1 PCT/CN2012/074231 CN2012074231W WO2013152521A1 WO 2013152521 A1 WO2013152521 A1 WO 2013152521A1 CN 2012074231 W CN2012074231 W CN 2012074231W WO 2013152521 A1 WO2013152521 A1 WO 2013152521A1
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WO
WIPO (PCT)
Prior art keywords
backlight
backlight module
inclined surface
backplane
mounting unit
Prior art date
Application number
PCT/CN2012/074231
Other languages
English (en)
French (fr)
Inventor
黄建发
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 US13/520,564 priority Critical patent/US8833958B2/en
Publication of WO2013152521A1 publication Critical patent/WO2013152521A1/zh

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Classifications

    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a direct type backlight module capable of enhancing the degree of light mixing. 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 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. There are many vertical and horizontal small wires between the two glass substrates, and the liquid crystal molecules are controlled to change direction by energization or not, and the light of the backlight module is refracted. Come out to produce the picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is required 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 backlight such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel to directly form a surface light source for the liquid crystal panel.
  • CCFL Cold Cathode Fluorescent Lamp
  • LED Light Emitting Diode
  • the conventional direct type backlight module includes: a back plate 100 , an LED light bar 200 installed in the back plate 100 , a reflective sheet 300 disposed in the back plate 100 , and a diffusion disposed on the reflective sheet 300 .
  • the light is further homogenized by the diffusion plate 400 and the optical film group 500, and the similar point light source of the LED light bar 200 is adjusted to a surface light source.
  • the light-emitting plane 202 of the LED light bar 200 is parallel to the light-incident surface 402 of the diffuser plate 400. This makes the light-mixing distance of the LED light bar 200 restricted by the thickness of the backlight module, and the uniform surface light source and thinning cannot be realized at the same time. Summary of the invention
  • the present invention provides a direct type backlight module, including: a back plate, an a plurality of backlights mounted on the backplane and a diffusion panel mounted on the backplane and located above the backlight.
  • the backplane includes a bottom panel, side panels connected to side edges of the bottom panel, and a plurality of mounting units disposed on the bottom panel Each mounting unit has a first inclined surface and a second inclined surface opposite to the oblique direction of the first inclined surface, and the backlights are respectively mounted on the first and second inclined surfaces, thereby causing the backlight to be disposed obliquely with respect to the diffusion plate.
  • the mounting unit is integrally formed with the bottom plate.
  • the mounting unit has an inverted V shape which is disposed in a direction toward the diffusion plate with respect to the bottom plate.
  • the mounting unit further includes a third inclined surface connecting the first inclined surface away from the side of the second inclined surface, and a fourth inclined surface connecting the second inclined surface away from the side of the first inclined surface, the mounting unit is w-shaped, the third and fourth The slope is recessed relative to the bottom plate in a direction away from the diffuser.
  • the first slope is symmetrically disposed with the second slope.
  • the backlight comprises a PCB board and an LED lamp mounted and electrically connected to the PCB board, the PCB board being mounted on the first and second slopes of the mounting unit.
  • the backlight further includes an LED lens mounted on the PCB, and the LED lens cover is disposed on the LED lamp.
  • An aluminum extrusion is further disposed between the first and second slopes of the PCB board and the mounting unit.
  • the invention also includes a reflective sheet mounted on the backplane bottom plate and an optical film set disposed on the diffusing plate.
  • the light emitted by the backlight is directly or reflected by the reflective sheet and then enters the diffusing plate and enters the optical film set.
  • the backlight is a linear LED strip.
  • the direct-lit backlight module of the present invention has a backlight unit disposed on the first and second slopes of the mounting unit by providing a mounting unit having first and second slopes on the backplane bottom plate.
  • the backlight is tilted relative to the diffuser plate, thereby increasing the light mixing distance, improving the light intensity and uniformity, and also reducing the number of LED lamps used, reducing the production cost, and facilitating the thinning of the backlight module.
  • 1 is a schematic structural view of a conventional direct type backlight module
  • FIG. 2 is a schematic structural view of a first embodiment of a direct type backlight module according to the present invention
  • FIG. 3 is a perspective view showing the assembly of the backlight and the back plate of FIG. 2;
  • FIG. 4 is a schematic structural view of a second embodiment of a direct type backlight module according to the present invention.
  • FIG. 5 is a schematic structural view of a third embodiment of a direct type backlight module according to the present invention.
  • FIG. 6 is a schematic structural view of a fourth embodiment of a direct type backlight module according to the present invention. detailed description
  • the present invention provides a direct type backlight module, including: a back plate 10 , a plurality of backlights 20 mounted in the back plate 10 , and mounted on the back plate 10 and located above the backlight 20 .
  • the diffusion plate 30 further forms a direct type backlight module.
  • the backplane 10 includes a bottom plate 12, a side plate 14 connected to a side edge of the bottom plate 12, and a plurality of mounting units 16 disposed on the bottom plate 12.
  • the mounting unit 16 is integrally formed with the bottom plate 12, and the bottom plate 12 is
  • the side panel 14 forms a backlight cavity 142.
  • Each of the mounting units 16 has a first inclined surface 162 and a second inclined surface 164 opposite to the oblique direction of the first inclined surface 162.
  • the backlights 20 are respectively mounted on the first and second inclined surfaces 162 and 164, thereby making the The backlight 20 is disposed obliquely with respect to the diffusing plate 30, so that the light emitted by the backlight 20 is obliquely incident into the diffusing plate 30, thereby increasing the light mixing distance of the light in the backlight cavity 142, so that the light mixing is uniform.
  • the backlight 20 is a plurality of LED lamps 24 including a PCB board 22 and mounted and electrically connected to the PCB board 22.
  • the backlight 20 is preferably a linear LED strip.
  • the PCB board 22 is fixedly mounted on the first and second slopes 162 and 164 of the mounting unit 16, and the aluminum board is also disposed between the PCB board 22 and the first and second slopes 162 and 164 (not shown). ) to enhance the thermal conductivity.
  • the first and second slopes 162, 164 are connected, and the mounting unit 16 has an inverted V shape which is protruded from the bottom plate 12 in a direction close to the diffusion plate 30.
  • the first and second inclined surfaces 162 and 164 are preferably symmetrically disposed.
  • the PCB boards 22 of the backlight 20 are respectively mounted on the first and second inclined surfaces 162 and 164 to increase the illumination intensity and uniformity of the entire backlight module. At the same time, the number of LED lamps 24 can be reduced and the production cost can be reduced.
  • the backlight module further includes a reflective sheet (not shown) mounted on the bottom plate 12 of the backboard 10, and an optical film set 40 disposed on the diffuser 30.
  • the light emitted by the backlight 20 is directly or via After the reflection sheet is reflected, it enters the diffusion plate 30 and enters the optical film group 40, thereby providing uniformity. Surface light source.
  • the mounting unit 16 further includes a third inclined surface connecting the first inclined surface 162 away from the side of the second inclined surface 164. 166, and a fourth inclined surface 168 connecting the second inclined surface 164 away from the first inclined surface 162, the mounting unit 16 is W-shaped, and the third and fourth inclined surfaces 166, 168 are opposite to the diffusion plate 30 with respect to the bottom plate 12.
  • the PCB boards 22 of the backlight 20 are respectively mounted on the first and second slopes 162 and 164 to increase the illumination intensity and uniformity of the entire backlight module, and at the same time, the number of LED lamps 24 can be reduced. , reduce manufacturing cost.
  • the backlight 20 is improved on the basis of the first embodiment.
  • the backlight 20 of the embodiment includes a PCB board 22, a plurality of LED lamps 24 mounted and electrically connected to the PCB board 22, and an LED lens 26 mounted on the PCB board 22, the LED lens 26 is disposed on the LED lamp 24, and the light emitted by the LED lamp 24 passes through
  • the LED lens 26 is bat-shaped after being refracted, further enhancing the uniformity of light mixing, reducing the light mixing distance, and facilitating the thinning of the backlight module.
  • the backlight 20 is improved on the basis of the second embodiment.
  • the backlight 20 of the embodiment includes a PCB board 22, A plurality of LED lamps 24 mounted on the PCB 22 and LED lenses 26 mounted on the PCB 22, the LED lenses 26 are disposed on the LED lamps 24, and the LED lamps 24 emit light through the LEDs.
  • the lens 26 is refracted and emits a bat shape, which further enhances the uniformity of light mixing and reduces the light mixing distance, which is beneficial to the thinning of the backlight module.
  • the direct-lit backlight module of the present invention has a backlight mounted on the first and second slopes of the mounting unit by providing a mounting unit having first and second slopes on the backplane substrate, such that the backlight The source is inclined with respect to the diffusion plate, thereby increasing the light mixing distance, improving the light intensity and uniformity, and also reducing the number of LED lamps used, reducing the production cost, and facilitating the thinning of the backlight module.

Abstract

一种直下式背光模块，包括背板（10）、安装于背板（10）内的数个背光源（20）及安装于背板（10）上且位于背光源（20）上方的扩散板（30），所述背板包括底板（12）、连接于底板侧边缘的侧板（14）及设于底板上的数个安装单元（16），每一安装单元（16）具有第一斜面（162）及与第一斜面倾斜方向相反的第二斜面（164），所述背光源（20）分别安装于该第一与第二斜面上，进而使得该背光源（20）相对于扩散板（30）倾斜设置，从而增加混光距离，提高光照强度及均匀度，减少LED灯的使用数量，有利于实现背光模组的薄型化。

Description

直下式背光模组 技术领域
本发明涉及液晶显示领域， 尤其涉及一种能增强混光程度的直下式背 光模组。 背景技术
液晶显示装置（LCD, Liquid Crystal Display )具有机身薄、 省电、 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， 两片玻璃基板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)设置在液晶面板后方， 直接形成面 光源提供给液晶面板。
请参阅图 1 , 现有的直下式背光模组包括： 背板 100、 安装于背板 100 内的 LED灯条 200、 设于背板 100内的反射片 300、 设于反射片 300上的 扩散板 400、 设于扩散板 400上的光学膜片组 500及安装于背板 100上的 胶框 600, 其中 LED灯条 200作为光源， 通过有背板 100与扩散板 400 形成的背光腔 150混光， 再经过扩散板 400和光学膜片组 500的均匀化， 将 LED灯条 200的类似点光源调整为面光源。
然而， LED灯条 200的出光平面 202与扩散板 400的入光面 402平 行， 这就使得 LED 灯条 200 的混光距离受到背光模组厚度的制约， 无法 同时实现均匀面光源与薄型化。 发明内容
本发明的目的在于提供一种直下式背光模组， 其照度均匀， 且有利于 实现薄型化。
为实现上述目的， 本发明提供一种直下式背光模组， 包括： 背板、 安 装于背板内的数个背光源及安装于背板上且位于背光源上方的扩散板， 所 述背板包括底板、 连接于底板侧边缘的侧板及设于底板上的数个安装单 元， 每一安装单元具有第一斜面及与第一斜面倾斜方向相反的第二斜面， 所述背光源分别安装于该第一与第二斜面上， 进而使得该背光源相对于扩 散板倾斜设置。
所述安装单元与底板一体成型制成。
所述安装单元呈倒 V 形， 其相对于底板向靠近扩散板的方向突起设 置。
所述安装单元还包括连接第一斜面远离第二斜面一侧的第三斜面、 及 连接第二斜面远离第一斜面一侧的第四斜面， 该安装单元呈 w 形， 该第 三与第四斜面相对于底板向远离扩散板的方向凹陷设置。
所述第一斜面与第二斜面对称设置。
所述背光源包括 PCB板及安装并电性连接于该 PCB板的 LED灯， 该 PCB板安装于所述安装单元的第一与第二斜面上。
所述背光源还包括安装于 PCB板上的 LED透镜， 该 LED透镜罩设于 该 LED灯上。
所述 PCB板与安装单元的第一与第二斜面之间还设有铝挤。
还包括安装于背板底板上的反射片、 及设于扩散板上的光学膜片组， 所述背光源发出的光线直接、 或经由反射片反射后进入扩散板， 再进入光 学膜片组。
所述背光源为线性 LED灯条。
本发明的有益效果： 本发明直下式背光模组， 通过在背板底板上设置 具有第一与第二斜面的安装单元， 将背光源设置于该安装单元的第一与第 二斜面上， 使得背光源相对于扩散板倾斜设置， 进而增加了混光距离， 提 高了光照强度及均匀度， 同时， 还可以减少 LED 灯的使用数量， 降低生 产成本， 且， 有利于实现背光模组的薄型化。
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为现有直下式背光模组的结构示意图；
图 2为本发明直下式背光模组第一实施例的结构示意图；
图 3为图 2中背光源与背板的组装立体示意图；
图 4为本发明直下式背光模组第二实施例的结构示意图；
图 5为本发明直下式背光模组第三实施例的结构示意图；
图 6为本发明直下式背光模组第四实施例的结构示意图。 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 2 及图 3 , 本发明提供一种直下式背光模组， 包括： 背板 10、 安装于背板 10 内的数个背光源 20及安装于背板 10上且位于背光源 20上方的扩散板 30, 进而形成直下式背光模组。
所述背板 10包括底板 12、 连接于底板 12侧边缘的侧板 14及设于底 板 12上的数个安装单元 16, 所述安装单元 16与底板 12—体成型制成， 该底板 12与侧板 14形成一背光腔 142。
所述每一安装单元 16具有第一斜面 162及与第一斜面 162倾斜方向 相反的第二斜面 164, 所述背光源 20分别安装于该第一与第二斜面 162、 164上， 进而使得该背光源 20相对于扩散板 30倾斜设置， 使得该背光源 20发出的光线倾斜射入扩散板 30 内， 进而增加了光线在背光腔 142 内的 混光距离， 使得混光均匀。
所述背光源 20为包括 PCB板 22及安装并电性连接于该 PCB板 22的 数个 LED灯 24, 该背光源 20优选为线性 LED灯条。 该 PCB板 22固定 安装于所述安装单元 16的第一与第二斜面 162、 164上， 该 PCB板 22与 该第一与第二斜面 162、 164之间还可以设置铝挤（未图示） ， 进而增强 导热效果。
在本实施例中， 所述第一与第二斜面 162、 164 相连， 所述安装单元 16呈倒 V形， 其相对于底板 12向靠近扩散板 30的方向突起设置。 该第 一与第二斜面 162、 164优选对称设置， 所述背光源 20的 PCB板 22分别 安装于该第一与第二斜面 162、 164 上， 增加整个背光模组的光照强度及 均匀度， 同时， 还可减少 LED灯 24的使用数量， 降低生产成本。
所述背光模组还包括安装于背板 10底板 12上的反射片 （未图示） 、 及设于扩散板 30上的光学膜片组 40, 所述背光源 20发出的光线直接、 或 经由反射片反射后进入扩散板 30, 再进入光学膜片组 40, 进而提供均匀 的面光源。
请参阅图 4, 为本发明直下式背光模组第二实施例的结构示意图， 在 本实施例中， 所述安装单元 16还包括连接第一斜面 162远离第二斜面 164 一侧的第三斜面 166、 及连接第二斜面 164远离第一斜面 162—侧的第四 斜面 168, 该安装单元 16呈 W形， 该第三与第四斜面 166、 168相对于底 板 12向远离扩散板 30的方向凹陷设置， 所述背光源 20的 PCB板 22分别 安装于该第一、 第二斜面 162、 164 上， 增加整个背光模组的光照强度及 均匀度， 同时， 还可减少 LED灯 24的使用数量， 降低生产成本。
请参阅图 5 , 为本发明直下式背光模组第三实施例的结构示意图， 其 在第一实施例的基础上对背光源 20进行了改进， 该实施例的背光源 20包 括 PCB板 22、 安装并电性连接于该 PCB板 22的数个 LED灯 24、 及安装 于 PCB板 22上的 LED透镜 26, 该 LED透镜 26罩设于该 LED灯 24 上， LED灯 24发出的光， 经由 LED透镜 26折射后呈蝙蝠状发射， 进一 步加强了混光均匀度， 减少了混光距离， 有利于背光模组的薄型化。
请参阅图 6, 为本发明直下式背光模组第四实施例的结构示意图， 其 在第二实施例的基础上对背光源 20进行了改进， 该实施例的背光源 20包 括 PCB板 22、 安装并电性连接于该 PCB板 22的数个 LED灯 24及安装 于 PCB板 22上的 LED透镜 26, 该 LED透镜 26罩设于该 LED灯 24 上， LED灯 24发出的光， 经由 LED透镜 26折射后呈蝙蝠状发射， 进一 步加强了混光均匀度， 减少了混光距离， 有利于背光模组的薄型化。
综上所述， 本发明直下式背光模组， 通过在背板底板上设置具有第一 与第二斜面的安装单元， 将背光源设置于该安装单元的第一与第二斜面 上， 使得背光源相对于扩散板倾斜设置， 进而增加了混光距离， 提高了光 照强度及均匀度， 同时， 还可以减少 LED 灯的使用数量， 降低生产成 本， 且， 有利于实现背光模组的薄型化。
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、 一种直下式背光模组， 包括： 背板、 安装于背板内的数个背光源 及安装于背板上且位于背光源上方的扩散板， 所述背板包括底板、 连接于 底板侧边缘的侧板及设于底板上的数个安装单元， 每一安装单元具有第一 斜面及与第一斜面倾斜方向相反的第二斜面， 所述背光源分别安装于该第 一与第二斜面上， 进而使得该背光源相对于扩散板倾斜设置。
2、 如权利要求 1 所述的直下式背光模组， 其中， 所述安装单元与底 板一体成型制成。
3、 如权利要求 1 所述的直下式背光模组， 其中， 所述安装单元呈倒
V形， 其相对于底板向靠近扩散板的方向突起设置。
4、 如权利要求 1 所述的直下式背光模组， 其中， 所述安装单元还包 括连接第一斜面远离第二斜面一侧的第三斜面、 及连接第二斜面远离第一 斜面一侧的第四斜面， 该安装单元呈 W 形， 该第三与第四斜面相对于底 板向远离扩散板的方向 陷设置。
5、 如权利要求 1 所述的直下式背光模组， 其中， 所述第一斜面与第 二斜面对称设置。
6、 如权利要求 1 所述的直下式背光模组， 其中， 所述背光源包括 PCB板及安装并电性连接于该 PCB板的 LED灯， 该 PCB板安装于所述安 装单元的第一与第二斜面上。
7、 如权利要求 6 所述的直下式背光模组， 其中， 所述背光源还包括 安装于 PCB板上的 LED透镜， 该 LED透镜罩设于该 LED灯上。
8、 如权利要求 6所述的直下式背光模组， 其中， 所述 PCB板与安装 单元的第一与第二斜面之间还设有铝挤。
9、 如权利要求 1 所述的直下式背光模组， 还包括安装于背板底板上 的反射片、 及设于扩散板上的光学膜片组， 所述背光源发出的光线直接、 或经由反射片反射后进入扩散板， 再进入光学膜片组。
10、 如权利要求 6所述的直下式背光模组， 其中， 所述背光源为线性 LED灯条。
11、 一种直下式背光模组， 包括： 背板、 安装于背板内的数个背光源 及安装于背板上且位于背光源上方的扩散板， 所述背板包括底板、 连接于 底板侧边缘的侧板及设于底板上的数个安装单元， 每一安装单元具有第一 斜面及与第一斜面倾斜方向相反的第二斜面， 所述背光源分别安装于该第 一与第二斜面上， 进而使得该背光源相对于扩散板倾斜设置； 其中， 所述安装单元与底板一体成型制成；
其中， 所述第一斜面与第二斜面对称设置；
所述背光源包括 PCB板及安装并电性连接于该 PCB板的 LED灯， 该 PCB板安装于所述安装单元的第一与第二斜面上；
所述背光源还包括安装于 PCB板上的 LED透镜， 该 LED透镜罩设于 该 LED灯上；
其中， 所述 PCB板与安装单元的第一与第二斜面之间还设有铝挤； 还包括安装于背板底板上的反射片、 及设于扩散板上的光学膜片组， 所述背光源发出的光线直接、 或经由反射片反射后进入扩散板， 再进入光 学膜片组；
其中， 所述背光源为线性 LED灯条。
PCT/CN2012/074231 2012-04-13 2012-04-18 直下式背光模组 WO2013152521A1 (zh)

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