WO2013120296A1 - 背光模组 - Google Patents

背光模组 Download PDF

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Publication number
WO2013120296A1
WO2013120296A1 PCT/CN2012/072409 CN2012072409W WO2013120296A1 WO 2013120296 A1 WO2013120296 A1 WO 2013120296A1 CN 2012072409 W CN2012072409 W CN 2012072409W WO 2013120296 A1 WO2013120296 A1 WO 2013120296A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight
bracket
disposed
backlight module
backplane
Prior art date
Application number
PCT/CN2012/072409
Other languages
English (en)
French (fr)
Inventor
余亚军
萧宇均
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 DE112012005903.4T priority Critical patent/DE112012005903B4/de
Priority to US13/509,378 priority patent/US20130208448A1/en
Publication of WO2013120296A1 publication Critical patent/WO2013120296A1/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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module. 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 LED light bar disposed on the edge of the back panel behind the liquid crystal display panel, and the light emitted by the LED light bar enters the light guide plate from the light incident surface of the light guide plate, and is reflected. And diffusing and exiting 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 direct type backlight module includes a back plate 200, an LED light bar 100 placed at an intermediate position of the back plate 200, and placed in a reflecting plate 300 on both sides of the LED light bar 100.
  • the reflecting plate 300 forms a reflective curved surface by plastic forming, and the light emitted by the LED light bar 100 forms a surface light source and is guided to the entire liquid crystal display panel, so that the entire liquid crystal display panel can be In the case of the luminance of the backlight module, the production cost is appropriately reduced.
  • the existing edge-lit backlight module includes a backboard 200, and is disposed on the backplane 200, the LED strips 100 on both sides, and the back panel.
  • a reflection plate 300' in the 200' the reflection plate 300' is formed by two plastically formed reflective curved surfaces, and the two reflective curved surfaces respectively reflect the LED lights disposed on both sides of the back plate 200'
  • the strip 100 emits light, which in turn directs the light to the entire liquid crystal display panel to provide a uniform surface light source for the entire liquid crystal display panel.
  • the reflector in the above two schemes is a micro-foamed reflector which is formed by blister molding.
  • This micro-foamed reflector is made of PET ( olyethylene Terephthalate ) as a substrate for foaming process. It has excellent light reflection properties (more than 99% total reflectance, diffuse reflectance: 96%) , specular reflectance: 3%), but the cost of the micro-foamed reflector is high, and the cost of the plastic molding process is also high, which is not conducive to the cost control of the backlight module. Summary of the invention
  • the present invention provides a backlight module, including: a backplane, a backlight disposed in the backplane, a diffusion panel disposed on the backplane, and a reflective component disposed in the backplane, the backlight
  • the backlight The emitted light enters the diffuser directly or after being reflected by the reflective component
  • the reflective assembly includes a bracket and a reflective unit disposed on the bracket, the bracket being made of a paper material, the bracket having a concave curved surface, wherein the reflecting unit is disposed on the concave curved surface.
  • the reflecting unit is a titanium dioxide layer coated on the concave curved surface.
  • the shape curved surface of the bracket is a plurality of continuously arranged curved surfaces.
  • the backplane includes a bottom plate and a side plate connected to the bottom plate, the side plate and the bottom plate form an accommodating space, the backlight and the reflective component are received in the accommodating space, and the reflective component is disposed on the bottom plate
  • the backlight is disposed on the side panel, and the light emitted by the backlight is directly or reflected by the reflective component and enters the diffusion plate.
  • the concave curved surface of the bracket is a concave curved surface.
  • the backplane includes a bottom plate and a side plate connected to the bottom plate, the side plate and the bottom plate form an accommodating space, the backlight and the reflective component are received in the accommodating space, and the reflective component is disposed on the bottom plate
  • the backlight is disposed at an intermediate position of the bottom plate and correspondingly disposed directly under the diffusing plate.
  • the bracket of the reflective component is provided with a through slot corresponding to the backlight, and the backlight is received in the through hole. Inside the slot.
  • the backlight is an LED linear light source.
  • the bracket of the reflective assembly is formed by hot pressing of a paper material.
  • optical film disposed on the diffuser plate.
  • the reflecting unit is a reflective sheet attached to the bracket.
  • the backlight module provided by the present invention replaces the microfabric in the prior art by forming a reflecting unit on a bracket made of a paper material to form a reflecting assembly.
  • the bubble reflecting plate because the paper material has low price and easy molding, greatly reduces the production cost of the reflective component, thereby reducing the production cost of the entire backlight module; the reflecting unit can be titanium coated on the bracket.
  • the white powder layer or the existing non-absorbent reflective sheet attached to the bracket further reduces the production cost of the reflective assembly while ensuring the reflection effect.
  • FIG. 1 is a schematic structural view of a conventional direct type backlight module
  • FIG. 2 is a schematic structural view of a conventional side-entry backlight module
  • FIG. 3 is a schematic structural view of an embodiment of a backlight module of the present invention.
  • FIG. 4 is a schematic structural view of still another embodiment of a backlight module of the present invention. detailed description
  • the backlight module includes: a backplane 1, a backlight 2 disposed in the backplane 1, and a reflective component 3 disposed in the backplane 1.
  • a diffusing plate 4 disposed on the backing plate 1 and located above the reflective component 3, and an optical film 5 disposed on the diffusing plate 4, the light emitted by the backlight 2 is directly or reflected by the reflective component 3
  • the diffusion plate 4 then enters the optical film 5, and the reflection assembly 3 is disposed such that the brightness of the diffusion plate 4 is uniform, and the liquid crystal display panel (not shown) is provided through the optical film 5 to provide a uniform surface light source.
  • the optical film 5 may be a brightness enhancement film for correcting the direction of light, or a polarization conversion film for polarizing the light source, or a combination of the two.
  • the backplane 1 includes a bottom plate 11 and a side plate 12 connected to the bottom plate 11 .
  • the side plate 12 and the bottom plate 11 form an accommodating space 13 .
  • the backlight 2 and the reflective component 3 are received in the accommodating space 13 .
  • the reflection assembly 3 includes a bracket 31 and a reflection unit 32 disposed on the bracket 31.
  • the bracket 31 is made of a paper material by thermoforming, the bracket 31 has a concave curved surface, and the reflection unit 32 is disposed on the concave curved surface of the bracket 31, the concave curved surface is a concave curved surface, the reflection Unit 32 is a titanium dioxide layer applied to the concave arcuate surface, or other non-absorbent shaped other reflective sheets. Since the present invention produces a reflective assembly by coating a titanium dioxide layer on a carrier made of paper material, or pasting other non-absorbent shaped other reflective sheets, compared to the prior art. The plastic molded micro-foamed reflector greatly reduces the production cost.
  • the backlight 2 is provided with an LED linear light source, which is disposed at an intermediate position of the bottom plate 11 of the back plate 1 and correspondingly disposed directly below the diffusing plate 4, and the bracket 31 of the reflective component 3 corresponds to the backlight.
  • 2 is provided with a through slot 311, the backlight 2 is received in the through slot 311, and a direct-type backlight module is formed, and the light emitted by the backlight 2 is directly or reflected by the reflective component 3 and enters the diffusing plate 4, Further, the brightness of the diffusion plate 4 is made uniform, and the liquid crystal display panel is provided with a surface light source having uniform illumination.
  • FIG. 4 is a schematic cross-sectional view of a backlight module according to another embodiment of the present invention.
  • the backlight module includes: a back panel 1 , a backlight 2 ′ disposed in the back panel 1 , and a back panel 1 .
  • the reflective component 3 after being reflected, enters the diffusing plate 4 and then enters the optical film 5.
  • the reflective component 3' is disposed such that the brightness of the diffusing plate 4 is uniform, and the optical film 5 is provided with a uniform surface for the liquid crystal display panel. light source.
  • the backplane 1 includes a bottom plate 11 and a side plate 12 connected to the bottom plate 11.
  • the side plate 12 and the bottom plate 11 form an accommodating space 13 , and the backlight 2 ′ and the reflective component 3 ′ are accommodated therein. Within space 13.
  • the reflection assembly 3 includes a bracket 31, and a reflection unit 32 disposed on the bracket 31.
  • the bracket 31 is made of a paper material by thermoforming, and the bracket 31 has a concave shape.
  • the curved surface is a plurality of continuous concave curved surfaces, and the reflecting unit 32 may be a titanium dioxide layer coated on the concave curved surface or an existing non-absorbent molded other reflective sheet. Since the present invention produces a reflective assembly by coating a titanium dioxide layer on a carrier made of paper material, or pasting other non-absorbent shaped other reflective sheets, compared to the prior art.
  • the plastic molded micro-foamed reflector greatly reduces the production cost.
  • the concave curved surface is two continuous concave curved surfaces, and the joints of the two concave curved surfaces are lower than the free end, thereby ensuring the reflection effect and not illuminating the light.
  • the backlight 2 using an LED linear light source, is disposed on the opposite side plates 12 of the back plate 1 and corresponding to the The two concave arcs are arranged to form a side-entry backlight module.
  • the light emitted by the backlight 2 is directly or through the reflective component 3, and then reflected into the diffusing plate 4, thereby making the brightness of the diffusing plate 4 uniform.
  • the backlight module provided by the present invention replaces the microfoamed reflector formed by the prior art by forming a reflecting unit on the bracket made of paper material.
  • the material has low price and easy molding, greatly reduces the production cost of the reflective component, and further reduces the production cost of the entire backlight module;
  • the reflective unit can be a titanium dioxide layer coated on the carrier, or attached to The existing non-absorbent reflective sheet on the bracket further reduces the production cost of the reflective assembly while ensuring the reflection effect.

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

Abstract

一种背光模组，其包括：背板（1）、设于背板（1）内的背光源（2）、设于背板（1）上的扩散板（4）及设于背板（1）内的反射组件（3），所述背光源（2）发出的光线直接、或经由反射组件（3）反射后进入所述扩散板（4）内，所述反射组件（3）包括托架（31）及设于托架（31）上的反射单元（32），所述托架（31）由纸质材料制成，该托架（31）具有凹形曲面，所述反射单元（32）设于该凹形曲面上。该背光模组通过在纸质材料制成的托架（31）上设置反射单元（32）形成反射组件（3）来代替现有技术中吸塑成型的微发泡反射板，由于纸质材料价格低、成型容易，极大的降低了反射组件（3）的生产成本，进而降低整个背光模组的生产成本；所述反射单元（32）可为涂覆于该托架（31）上的钛白粉层、或贴于该托架（31）上的现有的非吸塑制成的反射片，在保证反射效果的前提下，进一步降低了该反射组件（3）的生产成本。

Description

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 LED 灯条 ( lightbar )设于液晶显示面板侧后方的背板边缘， LED灯条发出的光线从 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。
如图 1 所示， 为了减少背光模组的背光源使用 LED 的数量， 现有的 直下式背光模组包括背板 200、 一放在背板 200 的中间位置的 LED灯条 100、 及放置在 LED灯条 100两侧的反射板 300, 该反射板 300通过吸塑 成型形成反射弧形曲面， 将 LED灯条 100 所发出的光形成面光源， 导向 整个液晶显示面板， 这样可以在不影响整个背光模组辉度的的情况下， 适 当的降低生产成本。
如图 2所示， 为了降低成本同时保证均匀的光照， 现有的侧入式背光 模组包括背板 200，、 设于背板 200，两侧的 LED 灯条 100，、 及设于背板 200'内的反射板 300' , 该反射板 300'通过吸塑成型形成两个连续设置的反 射弧形曲面， 该两个反射弧形曲面分别对应反射设于背板 200'两侧的 LED 灯条 100，发出的光线， 进而将光线导向整个液晶显示面板， 为整个液晶显 示面板提供均匀的面光源。 然而， 上述两种方案中的反射板为釆用吸塑成型的微发泡反射板
( Micro Cellular PET , MCPET ) , 该微发泡反射板釆用 PET ( olyethylene Terephthalate ) 为基材来进行发泡制程， 具有优秀的光反射 特性 (99%以上全反射率、 扩散反射率： 96%、 镜面反射率： 3%) , 但该微 发泡反射板成本高， 且吸塑成型工艺成本也高， 不利于背光模组的成本控 制。 发明内容
本发明的目的在于提供一种背光模组， 其通过在纸质材料制成的托架 上设置反射单元制成反射组件来代替现有技术中吸塑成型的微发泡反射 板， 结构简单， 成本低。
为实现上述目的， 本发明提供一种背光模组， 包括： 背板、 设于背板 内的背光源、 设于背板上的扩散板及设于背板内的反射组件， 所述背光源 发出的光线直接、 或经由反射组件反射后进入所述扩散板内， 所述反射组 件包括托架及设于托架上的反射单元， 所述托架由纸质材料制成， 该托架 具有凹形曲面， 所述反射单元设于该凹形曲面上。
所述反射单元为涂覆于所述凹形曲面上的钛白粉层。
所述托架的 形曲面为数个连续设置的 形弧面。
所述背板包括底板及连接于该底板的侧板， 该侧板与底板形成一容置 空间， 所述背光源与反射组件容置于该容置空间内， 所述反射组件设于该 底板上， 所述背光源设于该侧板上， 该背光源所发出的光线直接、 或经由 所述反射组件反射后进入扩散板。
所述托架的凹形曲面为一凹形弧面。
所述背板包括底板及连接于该底板的侧板， 该侧板与底板形成一容置 空间， 所述背光源与反射组件容置于该容置空间内， 所述反射组件设于该 底板上， 所述背光源设于所述底板中间位置， 并对应设于所述扩散板的正 下方， 所述反射组件的托架对应该背光源设有通槽， 该背光源容置于该通 槽内。
所述背光源为 LED线性光源。
所述反射组件的托架由纸质材料热压成型制成。
还包括设于扩散板上的光学膜片。
所述反射单元为贴设于所述托架上的反射片。
本发明的有益效果： 本发明所提供的背光模组， 其通过在纸质材料制 成的托架上设置反射单元形成反射组件来代替现有技术中吸塑成型的微发 泡反射板， 由于纸质材料价格低、 成型容易， 极大的降低了反射组件的生 产成本， 进而降低整个背光模组的生产成本； 所述反射单元可为涂覆于该 托架上的钛白粉层、 或贴于该托架上的现有的非吸塑制成的反射片， 在保 证反射效果的前提下， 进一步降低了该反射组件的生产成本。
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为现有的直下式背光模组的结构示意图；
图 2为现有的侧入式背光模组的结构示意图；
图 3为本发明背光模组的一实施例的结构示意图；
图 4为本发明背光模组的又一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釆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 3 , 为本发明背光模组一实施例的结构示意图， 该背光模组 包括： 背板 1、 设于背板 1内的背光源 2、 设于背板 1内的反射组件 3、 设 于背板 1上且位于反射组件 3上方的扩散板 4、 及设于扩散板 4上的光学 膜片 5 , 所述背光源 2发出的光线直接、 或经由反射组件 3反射后进入所 述扩散板 4, 然后进入光学膜片 5 内， 反射组件 3的设置使得扩散板 4的 亮度均匀， 进而通过光学膜片 5 为液晶显示面板（未图示）提供光照均匀 的面光源。 所述光学膜片 5 可以是用于修正光的方向的增光膜， 也可以是 用于使光源做偏极态转换的偏光转换膜， 还可以是两者的组合。
所述背板 1 包括底板 11及连接于该底板 11的侧板 12, 该侧板 12与 底板 11形成一容置空间 13 , 该背光源 2、 及反射组件 3容置于该容置空 间 13内。
所述反射组件 3包括托架 31及设于托架 31上的反射单元 32, 所述托 架 31为纸质材料通过热压成型制成， 该托架 31具有凹形曲面， 所述反射 单元 32设于该托架 31的凹形曲面上， 该凹形曲面为一凹形弧面， 该反射 单元 32 为涂覆于该凹形弧面上的钛白粉层、 或现有的非吸塑成型的其他 反射片。 由于本发明通过在纸质材料制成的托架上涂覆钛白粉层、 或贴覆 现有的非吸塑成型的其他反射片而制得反射组件， 相比现有技术中所釆用 的吸塑成型的微发泡反射板， 极大的降低了生产成本。
所述背光源 2釆用 LED线性光源， 其设置于背板 1的底板 11的中间 位置， 且对应设置于所述扩散板 4 的正下方， 所述反射组件 3 的托架 31 对应该背光源 2设有通槽 311 , 该背光源 2容置于该通槽 311 内， 进而形 成直下式背光模组， 该背光源 2所发出的光线直接、 或经由反射组件 3反 射后进入扩散板 4, 进而使得扩散板 4 的亮度均匀， 为液晶显示面板提供 光照均匀的面光源。
请参阅图 4 , 为本发明背光模组的又一实施例的结构示意剖面图， 该 背光模组包括： 背板 1、 设于背板 1 内的背光源 2'、 设于背板 1 内的反射 组件 3'、 设于背板 1上且位于反射组件 3'上方的扩散板 4、 及设于扩散板 4上的光学膜片 5 , 所述背光源 2，发出的光线直接、 或经由反射组件 3，反 射后进入所述扩散板 4 , 然后进入光学膜片 5 内， 反射组件 3'的设置使得 扩散板 4的亮度均匀， 进而通过光学膜片 5为液晶显示面板提供光照均匀 的面光源。
所述背板 1 包括底板 11及连接于该底板 11的侧板 12, 该侧板 12与 底板 11形成一容置空间 13 , 该背光源 2'、 及反射组件 3'容置于该容置空 间 13内。
所述反射组件 3，包括托架 31，及设于托架 31，上的反射单元 32，， 所述 托架 31，为纸质材料通过热压成型制成， 该托架 31，具有凹形曲面， 该凹形 曲面为数个连续的凹形弧面， 所述反射单元 32，可为涂覆于该凹形曲面上 的钛白粉层、 或现有的非吸塑成型的其他反射片。 由于本发明通过在纸质 材料制成的托架上涂覆钛白粉层、 或贴覆现有的非吸塑成型的其他反射片 而制得反射组件， 相比现有技术中所釆用的吸塑成型的微发泡反射板， 极 大的降低了生产成本。
优选的， 在本实施例中所述凹形曲面为两个连续的凹形弧面， 该两个 凹形弧面的连接处较自由端低， 进而在保证反射效果的同时， 不会对光线 有遮挡， 保证光照强度， 进一步保证整个背光模组的辉度； 所述背光源 2， 釆用 LED线性光源， 其设置于所述背板 1的相对两侧板 12上， 并分别对 应所述的两个凹形弧面设置， 进而形成侧入式背光模组， 该背光源 2，所发 出的光线直接、 或经由反射组件 3，反射后进入扩散板 4, 进而使得扩散板 4的亮度均匀， 为液晶显示面板提供光照均匀的面光源。 综上所述， 本发明所提供的背光模组， 其通过在纸质材料制成的托架 上设置反射单元形成反射组件来代替现有技术中吸塑成型的微发泡反射 板， 由于纸质材料价格低、 成型容易， 极大的降低了反射组件的生产成 本， 进而降低整个背光模组的生产成本； 所述反射单元可为涂覆于该托架 上的钛白粉层、 或贴于该托架上的现有的非吸塑制成的反射片， 在保证反 射效果的前提下， 进一步降低了该反射组件的生产成本。
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、 一种背光模组， 包括： 背板、 设于背板内的背光源、 设于背板上 的扩散板及设于背板内的反射组件， 所述背光源发出的光线直接、 或经由 反射组件反射后进入所述扩散板内， 所述反射组件包括托架及设于托架上 的反射单元， 所述托架由纸质材料制成， 该托架具有凹形曲面， 所述反射 单元设于该凹形曲面上。
2、 如权利要求 1 所述的背光模组， 其中， 所述反射单元为涂覆于所 述凹形曲面上的钛白粉层。
3、 如权利要求 2 所述的背光模组， 其中， 所述托架的凹形曲面为数 个连续设置的 形弧面。
4、 如权利要求 3 所述的背光模组， 其中， 所述背板包括底板及连接 于该底板的侧板， 该侧板与底板形成一容置空间， 所述背光源与反射组件 容置于该容置空间内， 所述反射组件设于该底板上， 所述背光源设于该侧 板上， 该背光源所发出的光线直接、 或经由所述反射组件反射后进入扩散 板。
5、 如权利要求 2 所述的背光模组， 其中， 所述托架的凹形曲面为一 凹形孤面。
6、 如权利要求 5 所述的背光模组， 其中， 所述背板包括底板及连接 于该底板的侧板， 该侧板与底板形成一容置空间， 所述背光源与反射组件 容置于该容置空间内， 所述反射组件设于该底板上， 所述背光源设于所述 底板中间位置， 并对应设于所述扩散板的正下方， 所述反射组件的托架对 应该背光源设有通槽， 该背光源容置于该通槽内。
7、 如权利要求 1所述的背光模组， 其中， 所述背光源为 LED线性光 源。
8、 如权利要求 1 所述的背光模组， 其中， 所述反射组件的托架由纸 质材料热压成型制成。
9、 如权利要求 1 所述的背光模组， 其中， 还包括设于扩散板上的光 学膜片。
10、 如权利要求 1 所述的背光模组， 其中， 所述反射单元为贴设于所 述托架上的反射片。
PCT/CN2012/072409 2012-02-15 2012-03-16 背光模组 WO2013120296A1 (zh)

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