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WO2015135228A1 - 背光模组及用该背光模组的液晶显示装置 - Google Patents

背光模组及用该背光模组的液晶显示装置 Download PDF

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Publication number
WO2015135228A1
WO2015135228A1 PCT/CN2014/074005 CN2014074005W WO2015135228A1 WO 2015135228 A1 WO2015135228 A1 WO 2015135228A1 CN 2014074005 W CN2014074005 W CN 2014074005W WO 2015135228 A1 WO2015135228 A1 WO 2015135228A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
backlight module
backlight
Prior art date
Application number
PCT/CN2014/074005
Other languages
English (en)
French (fr)
Inventor
常建宇
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 US14/356,374 priority Critical patent/US9256023B2/en
Publication of WO2015135228A1 publication Critical patent/WO2015135228A1/zh

Links

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
    • G02B6/0086—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
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332—Front frames
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/08—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 light absorbing layer
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G02F2201/503—Arrangements improving the resistance to shock

Definitions

  • the present invention relates to the field of flat display, and in particular to a backlight module and a liquid crystal display device using the same. Background technique
  • Liquid Crystal Display has many advantages, such as mobile phone, personal digital assistant (PDA), digital camera, computer screen or laptop screen. Wait.
  • a conventional liquid crystal panel is composed of a color filter substrate, a thin film transistor array substrate (TFT Array Substrate), and a liquid crystal layer disposed between the two substrates.
  • TFT Array Substrate thin film transistor array substrate
  • the working principle is that the rotation of the liquid crystal molecules of the liquid crystal layer is controlled by applying a driving voltage on the two glass substrates, and the light of the backlight module is refracted to generate 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.
  • the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-in type backlight module and a direct-type backlight module according to different incident positions of the light source.
  • the direct type backlight module is provided with a light source such as a cathode fluorescent lamp (CCFL) or a light emitting diode (LED) disposed behind the liquid crystal panel, and directly forms a surface light source to be supplied to the liquid crystal panel.
  • the side-lit backlight module has a backlight LED strip (Light bar) disposed at the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is from the side of the light guide plate (LGP). The smooth 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 passes through the optical film group to form a surface light source to be supplied to the liquid crystal panel.
  • CCFL cathode fluorescent lamp
  • LED light emitting di
  • a schematic diagram of a basic structure of a conventional side-lit backlight module includes: a backplane 100, a light guide plate 300 disposed in the backplane 100, and a light-shielding plate 300 disposed on the backplane 100 and located on the side of the light guide plate 300.
  • the backlight module in FIG. 1 is prone to light leakage (the light emitted by the backlight 500 is directly emitted by the optical film set 700).
  • a backlight module is available (such as As shown in FIG. 2, a retaining wall 902 is disposed on the plastic frame 900 to reflect light leakage.
  • optical film set 700 placed plastic frame 900", below (as shown in Figure 4)
  • in order to prevent light leakage extend the light-side optical film set 700", the lowermost film to the backlight Source 500, the surface of the PCB, and blackened the bottommost diaphragm or even all of the edge of the diaphragm, this will increase the optical film set 700", the processing process and lower yield, will bring cost increase.
  • the object of the present invention is to provide a backlight module which has a simple structure and can effectively avoid the occurrence of light leakage.
  • Another object of the present invention is to provide a liquid crystal display device which is simple in structure and contributes to narrow frame formation.
  • the present invention provides a backlight module, including: a back plate, a light guide plate disposed in the back plate, a backlight disposed in the back plate of the light guide plate, and a light guide plate disposed above the backlight; And a light shielding film on the back plate and an optical film group disposed above the light shielding film and the light guide plate, wherein one end of the light shielding film is fixedly connected to the upper surface of the light guide plate, and the other end is fixedly connected to the back plate.
  • the backplane includes a bottom plate and a side plate vertically connected to the bottom plate.
  • the backlight is fixedly mounted on the side plate, and the other end of the light shielding film is fixedly connected to the side plate of the back plate.
  • the light shielding film includes a first connecting portion, a light blocking portion connecting the first connecting portion, and a second connecting portion connecting the light blocking portions, wherein the first connecting portion is fixedly connected to an upper end surface of the side plate of the back plate, The light shielding portion is located directly above the backlight, and the second connection portion is fixedly connected to the upper surface of the light guide plate.
  • the first connecting portion is fixedly connected to the upper end surface of the side plate of the backboard by adhesive bonding; the second connecting portion is fixedly connected to the upper surface of the light guide plate by sticking.
  • the light shielding portion is telescopically disposed.
  • the light shielding portion is provided in a folded shape.
  • the bottom reflective sheet disposed between the back plate and the light guide plate and the plastic frame disposed on the back plate, wherein the first connecting portion is located between the plastic frame and the upper end surface of the side plate of the back plate.
  • the present invention further provides a backlight module, including: a back plate, a light guide plate disposed in the back plate, a backlight disposed in the back plate of the light guide plate, and a light guide plate and a back plate disposed above the backlight Cover a light film and an optical film set disposed above the light shielding film and the light guide plate, the light shielding film is fixedly connected to the upper surface of the light guide plate at one end, and the other end is fixedly connected to the back plate;
  • the backplane includes a bottom plate and a side plate vertically connected to the bottom plate, the backlight is fixedly mounted on the side plate, and the other end of the light shielding film is fixedly connected to the side plate of the back plate;
  • the light shielding film includes a first connecting portion, a light blocking portion connecting the first connecting portion, and a second connecting portion connecting the light blocking portion, wherein the first connecting portion is fixedly connected to the upper end surface of the side plate of the back plate.
  • the light shielding portion is located directly above the backlight, and the second connection portion is fixedly connected to the upper surface of the light guide plate.
  • the first connecting portion is fixedly connected to the upper end surface of the side plate of the backboard by adhesive bonding; the second connecting portion is fixedly connected to the upper surface of the light guide plate by sticking.
  • the light shielding portion is telescopically disposed.
  • the light shielding portion is provided in a folded shape.
  • the bottom reflective sheet disposed between the back plate and the light guide plate and the plastic frame disposed on the back plate, wherein the first connecting portion is located between the plastic frame and the upper end surface of the side plate of the back plate.
  • the present invention further provides a liquid crystal display device, comprising: a backlight module, a liquid crystal display panel disposed on the backlight module, and a front frame disposed on the liquid crystal display panel, the backlight module including a back plate and a back plate a light guide plate, a backlight disposed on the back side of the light guide plate, a light shielding film disposed on the light guide plate and the back plate above the backlight, and an optical film group disposed above the light shielding film and the light guide plate.
  • One end of the light shielding film is fixedly connected to the upper surface of the light guide plate, and the other end is fixedly connected to the back plate.
  • the backplane includes a bottom plate and a side plate vertically connected to the bottom plate, the backlight is fixedly mounted on the side plate, and the light shielding film includes a first connecting portion, a light blocking portion connecting the first connecting portion, and a connecting light blocking portion.
  • the second connecting portion is fixed to the upper end surface of the side plate of the back plate by a bonding method, and the light shielding portion is disposed in a folded shape directly above the backlight.
  • the two connecting portions are fixedly connected to the upper surface of the light guide plate by sticking.
  • the backlight module further includes a bottom reflective sheet disposed between the back plate and the light guide plate, and a plastic frame disposed on the back plate, wherein the first connecting portion is located on the side frame of the plastic frame and the back plate Between the upper end faces.
  • the backlight module of the present invention and the liquid crystal display device using the same have a light shielding film disposed above the backlight, thereby effectively blocking light leakage, improving the optical quality of the backlight module, and the shading
  • the two ends of the film are fixedly mounted on the back plate and the light guide plate by means of sticking, and the structure is simple and the cost is low.
  • the light shielding portion of the light shielding film is set as a telescopic structure, thereby effectively avoiding external force during transportation and the like.
  • the resulting light-shielding film shift further effectively prevents the occurrence of light leakage, and facilitates narrow frame formation of the liquid crystal display device.
  • FIG. 1 is a schematic diagram showing the basic structure of a conventional side-entry backlight module
  • FIG. 2 is a schematic cross-sectional structural view of a conventional backlight module
  • FIG. 3 is a schematic cross-sectional structural view of a conventional backlight module
  • FIG. 4 is a schematic cross-sectional structural view of a conventional backlight module
  • FIG. 5 is a schematic cross-sectional structural view of a backlight module of the present invention.
  • Fig. 6 is a cross-sectional structural view showing a liquid crystal display device of the present invention. detailed description
  • the present invention provides a backlight module, including: a back plate 2, a light guide plate 4 disposed in the back plate 2, a backlight 6 disposed in the back plate 2 on the side of the light guide plate 4, and a backlight.
  • a light shielding film 8 disposed on the light guide plate 4 and the back plate 2 above the source 6, an optical film group 10 disposed above the light shielding film 8 and the light guide plate 4, and a bottom reflection sheet disposed between the back plate 2 and the light guide plate 4.
  • the plastic frame 14 is disposed on the upper surface of the light guide plate 4, and the other end is fixedly connected to the back plate 2. Due to the arrangement of the light shielding film 8, the light emitted from the backlight 6 is not directly incident on the optical film group 10, thereby preventing the occurrence of light leakage.
  • the backplane 2 includes a bottom plate 22 and a side plate 24 that is vertically connected to the bottom plate 22, the backlight 6 is fixedly mounted on the side plate 24, and the other end of the light shielding film 8 is fixedly connected to the On the side panel 24 of the back panel 2.
  • the light shielding film 8 includes a first connecting portion 82, a light blocking portion 84 connecting the first connecting portion 82, and a second connecting portion 86 connecting the light blocking portion 84.
  • the first connecting portion 82 is fixedly connected to the back portion
  • the upper end surface of the side plate 24 of the board 2 the light shielding portion 84 is located directly above the backlight 6, and the second connection portion 86 is fixedly coupled to the upper surface of the light guide plate 4.
  • the first connecting portion 82 is fixedly connected to the upper end surface of the side plate 24 of the backboard 2 by a bonding manner; the second connecting portion 86 is fixedly connected to the guiding portion by a bonding manner.
  • the first connecting portion 82 is located on the side frame of the plastic frame 14 and the backboard 2 Between the upper end faces of 24.
  • the light shielding portion 84 is telescopically disposed.
  • the light shielding portion 84 is disposed in a folded shape, thereby effectively preventing the light shielding film 8 from being displaced due to an external force during transportation or the like, and further effectively preventing the occurrence of light leakage.
  • the present invention further provides a liquid crystal display device, including: a backlight module 20 , a liquid crystal display panel 40 disposed on the backlight module 20 , and a front frame 60 disposed on the liquid crystal display panel 40 , the backlight
  • the module includes a backing plate 2, a light guide plate 4 disposed in the back plate 2, a backlight 6 disposed in the back plate 2 on the side of the light guide plate 4, and a light source plate 4 and a back plate 2 disposed above the backlight 6.
  • the light shielding film 8 is fixedly connected to the upper surface of the light guide plate 4, and the other end is fixedly connected to the back plate 2. Due to the arrangement of the light shielding film 8, the light emitted from the backlight 6 is not directly incident on the optical film group 10, thereby preventing the occurrence of light leakage.
  • the backplane 2 includes a bottom plate 22 and a side plate 24 that is vertically connected to the bottom plate 22, the backlight 6 is fixedly mounted on the side plate 24, and the other end of the light shielding film 8 is fixedly connected to the On the side panel 24 of the back panel 2.
  • the light shielding film 8 includes a first connecting portion 82, a light blocking portion 84 connecting the first connecting portion 82, and a second connecting portion 86 connecting the light blocking portion 84.
  • the first connecting portion 82 is fixedly connected to the back portion
  • the upper end surface of the side plate 24 of the board 2 the light shielding portion 84 is located directly above the backlight 6, and the second connection portion 86 is fixedly coupled to the upper surface of the light guide plate 4.
  • the first connecting portion 82 is fixedly connected to the upper end surface of the side plate 24 of the backboard 2 by a bonding manner; the second connecting portion 86 is fixedly connected to the guiding portion by a bonding manner.
  • the first connecting portion 82 is located between the plastic frame 14 and the upper end surface of the side plate 24 of the backboard 2.
  • the light shielding portion 84 is telescopically disposed.
  • the light shielding portion 84 is disposed in a folded shape, thereby effectively preventing the light shielding film 8 from being displaced due to an external force during transportation or the like, and further effectively preventing the occurrence of light leakage.
  • the backlight module of the present invention and the liquid crystal display device using the same have a light shielding film disposed above the backlight, thereby effectively blocking light leakage, improving the optical quality of the backlight module, and the light shielding film
  • the two ends are fixedly mounted on the back plate and the light guide plate by means of pasting, and the structure is simple and the cost is low.
  • the light shielding portion of the light shielding film is set as a retractable structure, thereby effectively avoiding external force during transportation and the like.
  • the light-shielding film is offset to further prevent the occurrence of light leakage, and is advantageous for achieving a narrow frame of the liquid crystal display device.

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

Abstract

一种背光模组及用该背光模组的液晶显示装置，所述背光模组包括背板（2）、设于背板（2）内的导光板（4）、于导光板（4）侧边设于背板（2）内的背光源（6）、于背光源（6）上方设于导光板（4）与背板（2）上的遮光膜（8）及设于遮光膜（8）与导光板（4）上方的光学膜片组（10），所述遮光膜（8）一端固定连接于导光板（4）的上表面，另一端固定连接于背板（2）。上述设置有效阻挡光线外漏，提高背光模组的光学品质，同时，将遮光膜（8）的遮光部设置为可伸缩结构，有效避免由于外力而导致的遮光膜偏移，进一步有效防止漏光，并利于实现液晶显示装置的窄边框化。

Description

背光模组及用该背光模组的液晶显示装置 技术领域
本发明涉及平面显示领域， 尤其涉及一种背光模组及用该背光模组的 液晶显示装置。 背景技术
液晶显示装置 （ Liquid Crystal Display, LCD )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用， 如移动电话、 个人数字助理 ( PDA ) 、 数字相机、 计算机屏幕或笔记本电脑屏幕等。
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， 其包括壳 体、 设于壳体内的液晶面板及设于壳体内的背光模组 （ Backlight module ) 。 传统的液晶面板的结构是由一彩色滤光片基板 ( Color Filter ) 、 一薄膜晶体管阵列基板 ( Thin Film Transistor Array Substrate , TFT Array Substrate ) 以及一配置于两基板间的液晶层 （ Liquid Crystal Layer )所构成， 其工作原理是通过在两片玻璃基板上施加驱动电压来控制 液晶层的液晶分子的旋转， 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 是将发光光源例如阴极萤光灯管 （ Cold Cathode Fluorescent Lamp， CCFL ) 或发光二极管 （Light Emitting Diode , LED )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处， LED 灯条发出的光 线从导光板 ( Light Guide Plate, LGP )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， 为现有的侧入式背光模组的基本构造示意图， 其包括： 背板 100、 设于背板 100内的导光板 300及设于背板 100内且位于导光板 300侧边的背光源 500、 设于导光板 300上的光学膜片组 700及设于背板 100上的胶框 900。
然而， 图 1 中的背光模组容易出现漏光现象（背光源 500发出的光线 直接由光学膜片组 700射出） ， 为了解决该问题， 现有一种背光模组（如 图 2所示）在胶框 900，上设置挡墙 902， 以反射漏光。
而随着 LCD行业发展， 人们对 LCD边框的要求也越来越高， 对于图 2所示的侧入光方式， 因胶框 900'的挡墙 902的限制， 很难实现窄边框， 为了进一步实现模组窄边框， 目前常用的方式如图 3 所示， 光学膜片组 700"放于胶框 900"之上， 如此放置， 可以实现较窄边框， 但会带来其他 问题， 如光学膜片组 700"易脱落， 不易固定等。
而以其它方式， 如光学膜片组 700"，放置胶框 900"，下面 （如图 4 所 示） ， 为了防止漏光， 延长入光侧光学膜片组 700"，的最下层膜片至背光 源 500，的 PCB 表面， 并涂黑最下方膜片甚至全部膜片边缘， 如此会增加 光学膜片组 700"，加工工序而且良率较低， 会带来成本的增长。 发明内容
本发明的目的在于提供一种背光模组， 其结构简单， 能有效避免漏光 现象的发生。
本发明的另一目的在于提供一种液晶显示装置， 其结构简单， 利于实 现窄边框化。
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 内的导光板、 于导光板侧边设于背板内的背光源、 于背光源上方设于导光 板与背板上的遮光膜及设于遮光膜与导光板上方的光学膜片组， 所述遮光 膜一端固定连接于所述导光板的上表面， 另一端固定连接于所述背板。
所述背板包括底板及垂直连接于底板的侧板， 所述背光源固定安装于 所述侧板上， 所述遮光膜的另一端固定连接于所述背板的侧板上。
所述遮光膜包括第一连接部、 连接第一连接部的遮光部及连接遮光部 的第二连接部， 所述第一连接部固定连接于所述背板的侧板的上端面， 所 述遮光部位于所述背光源的正上方， 所述第二连接部固定连接于所述导光 板的上表面。
所述第一连接部通过粘贴的方式固定连接于所述背板的侧板的上端 面； 所述第二连接部通过粘贴的方式固定连接于所述导光板的上表面。
所述遮光部可伸缩设置。
所述遮光部呈折叠状设置。
还包括设于背板与导光板之间的底反射片及设于背板上的胶框， 所述 第一连接部位于所述胶框和所述背板的侧板的上端面之间。
本发明还提供一种背光模组， 包括： 背板、 设于背板内的导光板、 于 导光板侧边设于背板内的背光源、 于背光源上方设于导光板与背板上的遮 光膜及设于遮光膜与导光板上方的光学膜片组， 所述遮光膜一端固定连接 于所述导光板的上表面， 另一端固定连接于所述背板；
其中， 所述背板包括底板及垂直连接于底板的侧板， 所述背光源固定 安装于所述侧板上， 所述遮光膜的另一端固定连接于所述背板的侧板上； 其中， 所述遮光膜包括第一连接部、 连接第一连接部的遮光部及连接 遮光部的第二连接部， 所述第一连接部固定连接于所述背板的侧板的上端 面， 所述遮光部位于所述背光源的正上方， 所述第二连接部固定连接于所 述导光板的上表面。
所述第一连接部通过粘贴的方式固定连接于所述背板的侧板的上端 面； 所述第二连接部通过粘贴的方式固定连接于所述导光板的上表面。
所述遮光部可伸缩设置。
所述遮光部呈折叠状设置。
还包括设于背板与导光板之间的底反射片及设于背板上的胶框， 所述 第一连接部位于所述胶框和所述背板的侧板的上端面之间。
本发明还提供一种液晶显示装置， 包括： 背光模组、 设于背光模组上 的液晶显示面板及设于液晶显示面板上的前框， 所述背光模组包括背板、 设于背板内的导光板、 于导光板侧边设于背板内的背光源、 于背光源上方 设于导光板与背板上的遮光膜及设于遮光膜与导光板上方的光学膜片组， 所述遮光膜一端固定连接于所述导光板的上表面， 另一端固定连接于所述 背板。
所述背板包括底板及垂直连接于底板的侧板， 所述背光源固定安装于 所述侧板上， 所述遮光膜包括第一连接部、 连接第一连接部的遮光部及连 接遮光部的第二连接部， 所述第一连接部通过粘贴的方式固定连接于所述 背板的侧板的上端面， 所述遮光部呈折叠状设置于所述背光源的正上方， 所述第二连接部通过粘贴的方式固定连接于所述导光板的上表面。
所述背光模组还包括设于背板与导光板之间的底反射片及设于背板上 的胶框， 所述第一连接部位于所述胶框和所述背板的侧板的上端面之间。
本发明的有益效果： 本发明的背光模组及用该背光模组的液晶显示装 置， 通过在背光源上方设置遮光膜， 有效阻挡光线外漏， 提高了背光模组 的光学品质， 且该遮光膜的两端分别通过粘贴的方式固定安装于背板与导 光板上， 结构简单， 成本较低， 同时， 将遮光膜的遮光部设置为可伸缩结 构， 有效避免在运输等过程中由于外力而导致的遮光膜偏移， 进一步有效 防止漏光现象的产生， 并利于实现液晶显示装置的窄边框化。
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为现有的侧入式背光模组的基本构造示意图；
图 2为现有的背光模组的剖面结构示意图；
图 3为现有的背光模组的剖面结构示意图；
图 4为现有的背光模组的剖面结构示意图；
图 5为本发明的背光模组的剖面结构示意图；
图 6为本发明的液晶显示装置的剖面结构示意图。 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 5， 本发明提供一种背光模组， 包括： 背板 2、 设于背板 2 内的导光板 4、 于导光板 4侧边设于背板 2内的背光源 6、 于背光源 6上 方设于导光板 4与背板 2上的遮光膜 8、 设于遮光膜 8与导光板 4上方的 光学膜片组 10、 设于背板 2与导光板 4之间的底反射片 12及设于背板 2 上的胶框 14， 所述遮光膜 8—端固定连接于所述导光板 4的上表面， 另一 端固定连接于所述背板 2。 由于遮光膜 8的设置， 使得背光源 6所发出的 光线不会直接射入光学膜片组 10， 进而避免了漏光的产生。
具体地， 所述背板 2包括底板 22及垂直连接于底板 22的侧板 24， 所 述背光源 6 固定安装于所述侧板 24上， 所述遮光膜 8的另一端固定连接 于所述背板 2的侧板 24上。
进一步地， 所述遮光膜 8 包括第一连接部 82、 连接第一连接部 82的 遮光部 84及连接遮光部 84的第二连接部 86， 所述第一连接部 82固定连 接于所述背板 2的侧板 24的上端面， 所述遮光部 84位于所述背光源 6的 正上方， 所述第二连接部 86 固定连接于所述导光板 4 的上表面。 在本实 施例中， 所述第一连接部 82通过粘贴的方式固定连接于所述背板 2 的侧 板 24的上端面； 所述第二连接部 86通过粘贴的方式固定连接于所述导光 板 4的上表面。 所述第一连接部 82位于所述胶框 14和所述背板 2的侧板 24的上端面之间。
所述遮光部 84可伸缩设置， 优选的， 所述遮光部 84呈折叠状设置， 有效避免在运输等过程中由于外力而导致的遮光膜 8偏移， 进一步有效防 止漏光现象的产生。
请参阅图 6， 本发明还提供一种液晶显示装置， 包括： 背光模组 20、 设于背光模组 20上的液晶显示面板 40及设于液晶显示面板 40上的前框 60， 所述背光模组包括背板 2、 设于背板 2 内的导光板 4、 于导光板 4侧 边设于背板 2内的背光源 6、 于背光源 6上方设于导光板 4与背板 2上的 遮光膜 8、 设于遮光膜 8与导光板 4上方的光学膜片组 10、 设于背板 2与 导光板 4之间的底反射片 12及设于背板 2上的胶框 14， 所述遮光膜 8— 端固定连接于所述导光板 4 的上表面， 另一端固定连接于所述背板 2。 由 于遮光膜 8的设置， 使得背光源 6所发出的光线不会直接射入光学膜片组 10， 进而避免了漏光的产生。
具体地， 所述背板 2包括底板 22及垂直连接于底板 22的侧板 24， 所 述背光源 6 固定安装于所述侧板 24上， 所述遮光膜 8的另一端固定连接 于所述背板 2的侧板 24上。
进一步地， 所述遮光膜 8 包括第一连接部 82、 连接第一连接部 82的 遮光部 84及连接遮光部 84的第二连接部 86， 所述第一连接部 82固定连 接于所述背板 2的侧板 24的上端面， 所述遮光部 84位于所述背光源 6的 正上方， 所述第二连接部 86 固定连接于所述导光板 4 的上表面。 在本实 施例中， 所述第一连接部 82通过粘贴的方式固定连接于所述背板 2 的侧 板 24的上端面； 所述第二连接部 86通过粘贴的方式固定连接于所述导光 板 4的上表面。 所述第一连接部 82位于所述胶框 14和所述背板 2的侧板 24的上端面之间。
所述遮光部 84可伸缩设置， 优选的， 所述遮光部 84呈折叠状设置， 有效避免在运输等过程中由于外力而导致的遮光膜 8偏移， 进一步有效防 止漏光现象的产生。
综上所述， 本发明的背光模组及用该背光模组的液晶显示装置， 通过 在背光源上方设置遮光膜， 有效阻挡光线外漏， 提高了背光模组的光学品 质， 且该遮光膜的两端分别通过粘贴的方式固定安装于背板与导光板上， 结构简单， 成本较低， 同时， 将遮光膜的遮光部设置为可伸缩结构， 有效 避免在运输等过程中由于外力而导致的遮光膜偏移， 进一步有效防止漏光 现象的产生， 并利于实现液晶显示装置的窄边框化。
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、 一种背光模组， 包括： 背板、 设于背板内的导光板、 于导光板侧 边设于背板内的背光源、 于背光源上方设于导光板与背板上的遮光膜及设 于遮光膜与导光板上方的光学膜片组， 所述遮光膜一端固定连接于所述导 光板的上表面， 另一端固定连接于所述背板。
2、 如权利要求 1 所述的背光模组， 其中， 所述背板包括底板及垂直 连接于底板的侧板， 所述背光源固定安装于所述侧板上， 所述遮光膜的另 一端固定连接于所述背板的侧板上。
3、 如权利要求 2 所述的背光模组， 其中， 所述遮光膜包括第一连接 部、 连接第一连接部的遮光部及连接遮光部的第二连接部， 所述第一连接 部固定连接于所述背板的侧板的上端面， 所述遮光部位于所述背光源的正 上方， 所述第二连接部固定连接于所述导光板的上表面。
4、 如权利要求 3 所述的背光模组， 其中， 所述第一连接部通过粘贴 的方式固定连接于所述背板的侧板的上端面； 所述第二连接部通过粘贴的 方式固定连接于所述导光板的上表面。
5、 如权利要求 3所述的背光模组， 其中， 所述遮光部可伸缩设置。
6、 如权利要求 5 所述的背光模组， 其中， 所述遮光部呈折叠状设 置。
7、 如权利要求 4 所述的背光模组， 还包括设于背板与导光板之间的 底反射片及设于背板上的胶框， 所述第一连接部位于所述胶框和所述背板 的侧板的上端面之间。
8、 一种背光模组， 包括： 背板、 设于背板内的导光板、 于导光板侧 边设于背板内的背光源、 于背光源上方设于导光板与背板上的遮光膜及设 于遮光膜与导光板上方的光学膜片组， 所述遮光膜一端固定连接于所述导 光板的上表面， 另一端固定连接于所述背板；
其中， 所述背板包括底板及垂直连接于底板的侧板， 所述背光源固定 安装于所述侧板上， 所述遮光膜的另一端固定连接于所述背板的侧板上； 其中， 所述遮光膜包括第一连接部、 连接第一连接部的遮光部及连接 遮光部的第二连接部， 所述第一连接部固定连接于所述背板的侧板的上端 面， 所述遮光部位于所述背光源的正上方， 所述第二连接部固定连接于所 述导光板的上表面。
9、 如权利要求 8 所述的背光模组， 其中， 所述第一连接部通过粘贴 的方式固定连接于所述背板的侧板的上端面； 所述第二连接部通过粘贴的 方式固定连接于所述导光板的上表面。
10、 如权利要求 8所述的背光模组， 其中， 所述遮光部可伸缩设置。
11、 如权利要求 10 所述的背光模组， 其中， 所述遮光部呈折叠状设 置。
12、 如权利要求 9所述的背光模组， 还包括设于背板与导光板之间的 底反射片及设于背板上的胶框， 所述第一连接部位于所述胶框和所述背板 的侧板的上端面之间。
13、 一种液晶显示装置， 包括： 背光模组、 设于背光模组上的液晶显 示面板及设于液晶显示面板上的前框， 所述背光模组包括背板、 设于背板 内的导光板、 于导光板侧边设于背板内的背光源、 于背光源上方设于导光 板与背板上的遮光膜及设于遮光膜与导光板上方的光学膜片组， 所述遮光 膜一端固定连接于所述导光板的上表面， 另一端固定连接于所述背板。
14、 如权利要求 13 所述的液晶显示装置， 其中， 所述背板包括底板 及垂直连接于底板的侧板， 所述背光源固定安装于所述侧板上， 所述遮光 膜包括第一连接部、 连接第一连接部的遮光部及连接遮光部的第二连接 部， 所述第一连接部通过粘贴的方式固定连接于所述背板的侧板的上端 面， 所述遮光部呈折叠状设置于所述背光源的正上方， 所述第二连接部通 过粘贴的方式固定连接于所述导光板的上表面。
15、 如权利要求 14 所述的液晶显示装置， 其中， 所述背光模组还包 括设于背板与导光板之间的底反射片及设于背板上的胶框， 所述第一连接 部位于所述胶框和所述背板的侧板的上端面之间。
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