WO2015135240A1 - 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
WO2015135240A1
WO2015135240A1 PCT/CN2014/075994 CN2014075994W WO2015135240A1 WO 2015135240 A1 WO2015135240 A1 WO 2015135240A1 CN 2014075994 W CN2014075994 W CN 2014075994W WO 2015135240 A1 WO2015135240 A1 WO 2015135240A1
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WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
liquid crystal
backlight module
positioning
Prior art date
Application number
PCT/CN2014/075994
Other languages
English (en)
French (fr)
Inventor
周革革
唐国富
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
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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 US14/360,612 priority Critical patent/US9322984B2/en
Publication of WO2015135240A1 publication Critical patent/WO2015135240A1/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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • 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
    • G02F1/133314—Back 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
    • 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
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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

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 thin body, power saving, no radiation, etc., and has been widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens. Wait.
  • PDAs personal digital assistants
  • LCD Liquid Crystal Display
  • liquid crystal display devices which include a casing, a liquid crystal panel disposed in the casing, and a backlight module (Backlight module) disposed in the casing.
  • the structure of 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 (
  • the liquid crystal layer is constructed by controlling the rotation of the liquid crystal molecules of the liquid crystal layer by applying a driving voltage on the two glass substrates, and refracting the light of the backlight module to produce a picture. Since the liquid crystal panel itself does not emit light, it is necessary to display the image normally by the light source provided by the backlight module.
  • 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.
  • a light source such as a cathode fluorescent lamp (CCFL) or a light emitting diode (LED) 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 at the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is from the light guide plate (LGP) side. The light 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.
  • LGP light guide plate
  • FIG. 1 is a schematic cross-sectional view of a conventional side-lit backlight module, including: a backplane 100, a light guide plate 300 disposed in the backplane 100, and a light guide panel 300 disposed in the backplane 100.
  • the backlight 500 is converted into a surface light source by being converted by the light guide plate 300 to be supplied to the liquid crystal display panel.
  • the existing light guide plate is generally fixed in the back plate by screws, and when the light guide plate is thermally expanded, or cold contracted, and subjected to external force impact, When the screw is fixed, the expansion or contraction is not well buffered, which may cause damage to the light guide plate and affect the quality of the backlight module. Summary of the invention
  • the object of the present invention is to provide a backlight module, which has a simple structure, can effectively buffer the expansion and contraction of the light guide plate, improve the quality of the backlight module, and prolong the service life of the backlight module.
  • Another object of the present invention is to provide a liquid crystal display device having a simple backlight module, which can effectively buffer the expansion and contraction of the light guide plate, thereby improving the quality of the liquid crystal display device and prolonging the service life of the liquid crystal display device.
  • 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, and a positioning and fixing light guide plate disposed in the back plate a plurality of mounting members
  • the light guide plate includes a body and a plurality of mounting portions extending outward from a side of the body, each mounting portion including a first lug and a second lug disposed at intervals, the mounting member including a base portion, And first, second, and third positioning posts extending upward from the base and spaced apart from each other, a first elastic notch is formed between the first and second positioning posts, and the second and third positioning posts are formed a second elastic notch, the body abuts against the base and the second positioning post, the first lug abuts against a side of the base and the first positioning post away from the second positioning post, the second lug Abutting the base and the third positioning post away from a side of the second positioning post.
  • the mounting portions are four, respectively located on opposite sides of the body, and the mounting members are four, and are respectively disposed in cooperation with the four mounting portions.
  • the mounting member is integrally formed of an elastic material, and the light guide plate is integrally formed.
  • the elastic material is an elastic plastic material.
  • the backlight module further includes a bottom reflective sheet disposed between the back plate and the light guide plate and an optical film set disposed above the light guide plate.
  • the present invention further provides a liquid crystal display device, comprising: a backlight module, a plastic frame disposed on the backlight module, a liquid crystal display panel disposed on the plastic frame, and a front frame disposed on the liquid crystal display panel, the backlight module
  • the set includes a back plate, a light guide plate disposed in the back plate, a backlight disposed in the back plate, and a mounting member disposed in the back plate and positioning and fixing the light guide plate, the light guide plate including the body and the side of the body a plurality of mounting portions extending outwardly, each mounting portion including spaced apart first and second lugs, the mounting member including a base portion, and first and second portions extending upward from the base portion and sequentially spaced apart a third positioning post, a first elastic notch is formed between the first and second positioning posts, and a second elastic notch is formed between the second and third positioning posts, the body abuts against the base and the first a second positioning post, the first lug abuts against a side of
  • the mounting portions are four, respectively located on opposite sides of the body, and the mounting members are four, which are respectively disposed in cooperation with the four mounting portions.
  • the mounting member is integrally formed of an elastic material, and the light guide plate is integrally formed.
  • the elastic material is an elastic plastic material.
  • the liquid crystal display device further includes a bottom reflective sheet disposed between the back plate and the light guide plate and an optical film set disposed above the light guide plate.
  • the present invention further provides a liquid crystal display device, comprising: a backlight module, a plastic frame disposed on the backlight module, a liquid crystal display panel disposed on the plastic frame, and a front frame disposed on the liquid crystal display panel, the backlight module
  • the set includes a back plate, a light guide plate disposed in the back plate, a backlight disposed in the back plate, and a mounting member disposed in the back plate and positioning and fixing the light guide plate, the light guide plate including the body and the side of the body a plurality of mounting portions extending outwardly, each mounting portion including spaced apart first and second lugs, the mounting member including a base portion, and first and second portions extending upward from the base portion and sequentially spaced apart a third positioning post, a first elastic notch is formed between the first and second positioning posts, and a second elastic notch is formed between the second and third positioning posts, the body abuts against the base and the first a second positioning post, the first lug abuts against a side of
  • the mounting portions are four, respectively located on opposite sides of the body, and the mounting members are four, and are respectively disposed in cooperation with the four mounting portions.
  • the mounting member is integrally formed of an elastic material, and the light guide plate is integrally formed.
  • the elastic material is an elastic plastic material.
  • the liquid crystal display device further includes a bottom reflective sheet disposed between the back plate and the light guide plate and an optical film set disposed above the light guide plate.
  • the present invention has the following advantages: the backlight module of the present invention and the liquid crystal display device using the same are provided with a mounting member on the side of the light guide plate to effectively position and fix the light guide plate, and at the same time, the mounting member is set to have elasticity.
  • the structure of the three positioning posts of the notch is assembled. When assembled, the two sides of the mounting portion of the light guide plate are respectively engaged with the two sides of the two positioning posts. When the light guide plate is heated and expanded, the mounting portion presses the positioning posts on both sides to make it face. The positioning pole in the middle is offset to buffer the offset of the light guide plate. When the light guide plate is contracted, the positioning posts on both sides are elastically deformed to ensure the positioning effect on the light guide plate, thereby effectively improving the backlight module and using the same. The quality of the liquid crystal display device of the backlight module extends the service life.
  • 1 is a schematic cross-sectional view of a conventional side-entry backlight module
  • FIG. 2 is a schematic cross-sectional view of a backlight module of the present invention
  • FIG. 3 is a schematic perspective view showing a light guide plate of a backlight module of the present invention.
  • FIG. 4 is a schematic perspective structural view of a mounting member of a backlight module of the present invention.
  • FIG. 5 is a schematic perspective view of a light guide plate and a mounting member of a backlight module of the present invention
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device of the present invention.
  • 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 , and disposed in the back plate 2 and positioned a mounting member 8 for fixing the light guide plate 4, a bottom reflection sheet 10 disposed between the light guide plate 4 and the back plate 2, and an optical film group 12 disposed above the light guide plate 4, wherein the mounting member 8 will be a light guide plate 4 Positioning is fixed in the backboard 2, and the backlight 6 emits light, directly or through the bottom reflection sheet 10, and then enters the light guide plate 4, and is converted by the light guide plate 4 to form a surface light source.
  • the light guide plate 4 includes a body 42 and a plurality of mounting portions 44 extending outward from a side of the body 42 .
  • the light guide plate 4 is integrally formed.
  • the mounting portion 44 includes a first lug 442 and a second lug 444 that are spaced apart.
  • the mounting portion 44 is at least two, which are respectively located on opposite sides of the body 42.
  • the mounting portion 44 is four, respectively located on opposite sides of the body 42 and correspondingly
  • the mounting members 8 are also four, and are respectively disposed in cooperation with the four mounting portions 44.
  • the mounting member 8 is integrally formed of an elastic material.
  • the elastic material is an elastic plastic material.
  • the mounting member 8 includes a base portion 82, and first, second, and third positioning posts 84, 86, 88 extending upward from the base portion 82.
  • the first, second, and third positioning posts 84, 86, 88 are in turn The spacing is set such that a first elastic notch 810 is formed between the first and second positioning posts 84, 86, and a second elastic notch 812 is formed between the second and third positioning posts 86, 88.
  • the mounting member 8 is disposed on the bottom plate of the backboard 2, and may also be disposed on the plastic frame (not shown); when the mounting member 8 is disposed on the bottom plate of the backboard 2, it may be pasted or screwed Fixing in a locking manner, the lower surface of the body 42 of the light guide plate 4 abuts against and bears on the base portion 82, and the side surface thereof abuts against the second positioning post 86, and the first The lug 442 abuts against the lower surface of the second lug 444 and is carried on the base 82, and the side surfaces thereof abut against the side of the first and third positioning posts 84, 88 away from the second positioning post 86; When the mounting member 8 is disposed on the plastic frame, it can be integrally formed with the plastic frame, and at this time, the light guide plate 4 The upper surface abuts against the base portion 82, and the side surface abuts against the second positioning post 86.
  • the body 42 of the light guide plate 4 when assembled, is carried on the base portion 82 of the mounting member 8 and abuts against the second positioning post 86 , the first lug 442 and the second lug .
  • the 444 is carried on the base 82 and is respectively engaged with the outer sides of the first and third positioning posts 84, 88. Because the first elastic notch 810 and the second elastic notch 812 are present, when the light guide plate 4 is thermally expanded, the first lug 442 and the second lug 444 respectively press the first and third positioning posts 84.
  • first and third positioning posts 84, 88 such that the first and third positioning posts 84, 88 can be closer to the second positioning post 86 to buffer the amount of expansion of the light guide plate 4 and reduce internal stress; and when the light guide plate 4 is cold contracted
  • the first and third positioning posts 84, 88 are elastically deformed, and are still abutted against the first lug 442 and the second lug 444 to fix and position the light guide plate 4, thereby ensuring the light guide plate. 4 positioning fixing effect, at the same time can effectively buffer the expansion and contraction of the light guide plate 4, P low internal stress, to avoid cracking of the light guide plate 4 during use and transportation, and effectively ensure the quality of the backlight module.
  • the present invention further provides a liquid crystal display device, comprising: a backlight module 20 , a plastic frame 40 disposed on the backlight module 20 , a liquid crystal display panel 60 disposed on the plastic frame 40 , and a front frame 80 on the liquid crystal display panel 60
  • the backlight module 20 includes a back plate 2, a light guide plate 4 disposed in the back plate 2, a backlight 6 disposed in the back plate 2, and disposed in the back plate 2 a mounting member 8 for positioning and fixing the light guide plate 4, a bottom reflection sheet 10 disposed between the light guide plate 4 and the back plate 2, and an optical film group 12 disposed above the light guide plate 4, wherein the mounting member 8 will guide
  • the light source plate 4 is fixed and fixed in the back plate 2, and the backlight 6 emits light, and is reflected directly or through the bottom reflection sheet 10 to enter the light guide plate 4, and is converted by the light guide plate 4 to form a surface light source.
  • the liquid crystal display panel 60 is used to display a screen, and the front frame 80 fixes the
  • the backlight module of the present invention and the liquid crystal display device using the same are provided with a mounting member on the side of the light guide plate to effectively position and fix the light guide plate, and at the same time, the mounting member is provided with an elastic notch.
  • the structure of the three positioning posts when assembled, the two sides of the mounting portion of the light guide plate are respectively engaged with the two sides of the two positioning columns.
  • the mounting portion presses the positioning columns on both sides to make it face the middle.
  • the positioning column is offset to buffer the offset of the light guide plate.
  • the positioning posts on both sides are elastically deformed to ensure the positioning and fixing effect on the light guide plate, thereby effectively improving the backlight module and using the backlight.
  • the quality of the module's liquid crystal display device has been extended Life expectancy.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (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。背光模组包括背板（2）、设于背板（2）内的导光板（4）和背光源（6）及设于背板（2）内且定位与固定导光板（4）的数个安装件（8）。导光板（4）包括本体（42）及从本体（42）侧边向外延伸的数个安装部（44），每一安装部（44）包括间隔设置的第一凸耳（442）与第二凸耳（444）。安装件（8）包括基部（82）及由基部（82）向上延伸并依次间隔设置的第一、第二与第三定位柱（84、86、88），本体（42）抵靠于基部（82）与第二定位柱（86），第一凸耳（442）抵靠于基部（82）及第一定位柱（84），第二凸耳（444）抵靠基部（82）及第三定位柱（88）。

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。
现有巿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 )、 ——薄膜晶体管阵歹 [J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 )—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剖面结构示意图，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 300一侧的背光源 500 ,所述背光源 500发出光线经由导光板 300转换后 变成面光源，以提供给液晶显示面板。
由于导光板实现线光源到面光源的功能转换，因此导光板的定位非常 重要，现有的导光板一般通过螺钉固定于背板内，当导光板受热膨胀，或 者遇冷收缩，以及受到外力撞击时，螺钉固定不能很好的缓冲该膨缩或者 应力，可能会对导光板造成损坏，影响背光模组的品质。 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，能有效缓冲导光 板的胀缩，提升背光模组的品质，延长背光模组的使用寿命。
本发明的另一目的在于提供一种液晶显示装置，其背光模组结构简 单，能有效缓冲导光板的胀缩，从而提升液晶显示装置的品质，延长液晶 显示装置的使用寿命。
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、 设于背板内的背光源、 及设于背板内且定位与固定导光板的 数个安装件，所述导光板包括本体及从本体侧边向外延伸的数个安装部， 每一安装部包括间隔设置的第一凸耳与第二凸耳，所述安装件包括基部、 及由基部向上延伸并依次间隔设置的第一、 第二与第三定位柱，所述第一 与第二定位柱之间形成第一弹性缺口，所述第二与第三定位柱之间形成第 二弹性缺口，所述本体抵靠于基部与所述第二定位柱，所述第一凸耳抵靠 于基部及第一定位柱远离第二定位柱的一侧，所述第二凸耳抵靠于基部及 所述第三定位柱远离第二定位柱的一侧。
所述安装部为四个，分别位于所述本体的相对两侧，所述安装件为四 个，分别与四个安装部配合设置。 所述安装件由弹性材料一体成型制成，所述导光板一体成型制成。 所述弹性材料为弹性塑胶材料。
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导光板 上方的光学膜片组。
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 的胶框、 设于胶框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、 设于背板内的背光源、 及设于 背板内且定位与固定导光板的安装件，所述导光板包括本体及从本体侧边 向外延伸的数个安装部，每一安装部包括间隔设置的第一凸耳与第二凸 耳，所述安装件包括基部、 及由基部向上延伸并依次间隔设置的第一、 第 二与第三定位柱，所述第一与第二定位柱之间形成第一弹性缺口，所述第 二与第三定位柱之间形成第二弹性缺口，所述本体抵靠于基部与所述第二 定位柱，所述第一凸耳抵靠于基部及第一定位柱远离第二定位柱的一侧， 所述第二凸耳抵靠于基部及所述第三定位柱远离第二定位柱的一侧。
所述安装部为四个，分别位于所述本体的相对两侧，所述安装件为四 个，分别与四个安装部配合设置。
所述安装件由弹性材料一体成型制成，所述导光板一体成型制成。 所述弹性材料为弹性塑胶材料。
所述液晶显示装置还包括设于背板与导光板之间的底反射片及设于导 光板上方的光学膜片组。
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 的胶框、 设于胶框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、 设于背板内的背光源、 及设于 背板内且定位与固定导光板的安装件，所述导光板包括本体及从本体侧边 向外延伸的数个安装部，每一安装部包括间隔设置的第一凸耳与第二凸 耳，所述安装件包括基部、 及由基部向上延伸并依次间隔设置的第一、 第 二与第三定位柱，所述第一与第二定位柱之间形成第一弹性缺口，所述第 二与第三定位柱之间形成第二弹性缺口，所述本体抵靠于基部与所述第二 定位柱，所述第一凸耳抵靠于基部及第一定位柱远离第二定位柱的一侧， 所述第二凸耳抵靠于基部及所述第三定位柱远离第二定位柱的一侧；
其中，所述安装部为四个，分别位于所述本体的相对两侧，所述安装 件为四个，分别与四个安装部配合设置。
所述安装件由弹性材料一体成型制成，所述导光板一体成型制成。 所述弹性材料为弹性塑胶材料。 所述液晶显示装置还包括设于背板与导光板之间的底反射片及设于导 光板上方的光学膜片组。
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，通过在导光板的侧边设置安装件，有效定位与固定导光板，同时，将 安装件设置为具有弹性缺口的三条定位柱的结构，组装时，导光板的安装 部的两侧分别卡合于二条定位柱的两侧，当导光板受热膨胀时，安装部挤 压两侧的定位柱，使之朝向中间的定位柱偏移，以缓冲导光板的偏移量， 而当导光板收缩时，两侧的定位柱回复弹性形变，以保证对导光板的定位 效果，有效提高了背光模组及用该背光模组的液晶显示装置的品质，延长 了使用寿命。
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剖面结构简图；
图 2为本发明背光模组的剖面结构简图；
图 3为本发明背光模组的导光板的立体结构示意图；
图 4为本发明背光模组的安装件的立体结构示意图；
图 5为本发明背光模组的导光板与安装件的立体配合示意图； 图 6为本发明液晶显示装置的剖面结构简图。 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 ,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、 设于背板 2内的背光源 6、 设于背板 2内且定位与固定导 光板 4的安装件 8、 设于导光板 4与背板 2之间的底反射片 10及设于导光 板 4上方的光学膜片组 12 ,其中，所述安装件 8将导光板 4定位固定于背 板 2内，所述背光源 6发出光线，直接或经由底反射片 10反射后进入导 光板 4 ,经由导光板 4转换后形成面光源。
请参阅图 3 ,在本实施例中，所述导光板 4包括本体 42及从本体 42 侧边向外延伸的数个安装部 44 ,所述导光板 4一体成型制成，所述每一安 装部 44包括间隔设置的第一凸耳 442与第二凸耳 444。 所述安装部 44至 少包括两个，分别位于本体 42 的相对两侧，优选地，在本实施例中，所 述安装部 44为四个，分别位于所述本体 42的相对两侧，对应地，所述安 装件 8也为四个，分别与四个安装部 44配合设置。
请参阅图 4 ,所述安装件 8 由弹性材料一体成型制成，优选地，在本 实施例中，所述弹性材料为弹性塑胶材料。 所述安装件 8包括基部 82、 及 由基部 82 向上延伸设置的第一、 第二与第三定位柱 84、 86、 88 ,该第 一、 第二与第三定位柱 84、 86、 88依次间隔设置，从而对应于第一与二 定位柱 84、 86之间形成第一弹性缺口 810 ,于第二与三定位柱 86、 88之 间形成第二弹性缺口 812。
所述安装件 8设置在背板 2的底板上，也可以设置在胶框（未图示） 上；当该安装件 8设置于所述背板 2的底板上时，其可通过粘贴或螺钉锁 合的方式进行固定，这时，所述导光板 4的本体 42的下表面抵靠并承载 于所述基部 82上，其侧表面抵靠于所述第二定位柱 86上，而第一凸耳 442与第二凸耳 444的下表面抵靠并承载于基部 82上，其侧表面分别抵靠 于所述第一与第三定位柱 84、 88远离第二定位柱 86的一侧；当该安装件 8设于所述胶框上时，其可与胶框一体成型制成，这时，所述导光板 4的 上表面抵靠于所述基部 82 ,侧表面抵靠于所述第二定位柱 86 ,所述第一 凸耳 442与第二凸耳 444的上表面抵靠于基部 82上，其侧表面分别抵靠 于所述第一与第三定位柱 84、 88远离第二定位柱 86的一侧。
请参阅图 5 ,组装时，所述导光板 4的本体 42承载于安装件 8的基部 82上，并抵靠于所述第二定位柱 86 ,所述第一凸耳 442与第二凸耳 444 承载于基部 82上，且分别卡合于所述第一与第三定位柱 84、 88的外侧。 由于存在第一弹性缺口 810及第二弹性缺口 812 ,当所述导光板 4受热膨 胀时，所述第一凸耳 442与第二凸耳 444分别挤压所述第一与第三定位柱 84、 88 ,使得该第一与第三定位柱 84、 88可以朝向第二定位柱 86靠拢， 以缓冲所述导光板 4的膨胀量并降低内应力；而当所述导光板 4遇冷收缩 时，所述第一与第三定位柱 84、 88 回复弹性形变，依旧抵靠于所述第一 凸耳 442与第二凸耳 444上，对导光板 4进行定位固定，从而保证了对导 光板 4的定位固定效果，同时可以有效的缓冲导光板 4的胀缩、 P牵低内应 力，避免导光板 4在使用及运输过程中发生破裂，有效保证背光模组品 质。
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上的胶框 40、 设于胶框 40上的液晶显示面板 60及设于 液晶显示面板 60上的前框 80 ,所述背光模组 20包括背板 2、 设于背板 2 内的导光板 4、 设于背板 2内的背光源 6、 设于背板 2内且定位与固定导 光板 4的安装件 8、 设于导光板 4与背板 2之间的底反射片 10及设于导光 板 4上方的光学膜片组 12 ,其中，所述安装件 8将导光板 4定位固定于背 板 2内，所述背光源 6发出光线，直接或经由底反射片 10反射后进入导 光板 4 ,经由导光板 4转换后形成面光源，所述胶框 40用于承载液晶显示 面板 60 ,所述液晶显示面板 60用于显示画面，所述前框 80将液晶显示面 板 60固定于胶框 40内。
前面参照图 2-5对背光模组的详细描述皆属于对所述背光模组 20的描 述，在此不做重复描述。
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 在导光板的侧边设置安装件，有效定位固定导光板，同时，将安装件设置 为具有弹性缺口的三条定位柱的结构，组装时，导光板的安装部的两侧分 别卡合于二条定位柱的两侧，当导光板受热膨胀时，安装部挤压两侧的定 位柱，使之朝向中间的定位柱偏移，以缓冲导光板的偏移量，而当导光板 收缩时，两侧的定位柱回复弹性形变，以保证对导光板的定位固定效果， 有效提高了背光模组及用该背光模组的液晶显示装置的品质，延长了使用 寿命。
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

杈 利 要 求
1、 一种背光模组，包括：背板、 设于背板内的导光板、 设于背板内 的背光源、 及设于背板内且定位与固定导光板的数个安装件，所述导光板
( 4 )包括本体及从本体侧边向外延伸的数个安装部，每一安装部包括间 隔设置的第一凸耳与第二凸耳，所述安装件包括基部、 及由基部向上延伸 并依次间隔设置的第一、 第二与第三定位柱，所述第一与第二定位柱之间 形成第一弹性缺口，所述第二与第三定位柱之间形成第二弹性缺口，所述 本体抵靠于基部与所述第二定位柱，所述第一凸耳抵靠于基部及第一定位 柱远离第二定位柱的一侧，所述第二凸耳抵靠于基部及所述第三定位柱远 离第二定位柱的一侧。
2、 如权利要求 1 所述的背光模组，其中，所述安装部为四个，分别 位于所述本体的相对两侧，所述安装件为四个，分别与四个安装部配合设
3、 如权利要求 1 所述的背光模组，其中，所述安装件由弹性材料一 体成型制成 ,所述导光板一体成型制成。
4、 如权利要求 3 所述的背光模组，其中，所述弹性材料为弹性塑胶 材料。
5、 如权利要求 1 所述的背光模组，还包括设于背板与导光板之间的 底反射片及设于导光板上方的光学膜片组。
6、 一种液晶显示装置，包括：背光模组、 设于背光模组上的胶框、 设于胶框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、 设于背板内的背光源、 及设于背板内且 定位与固定导光板的安装件，所述导光板包括本体及从本体侧边向外延伸 的数个安装部，每一安装部包括间隔设置的第一凸耳与第二凸耳，所述安 装件包括基部、 及由基部向上延伸并依次间隔设置的第一、 第二与第三定 位柱，所述第一与第二定位柱之间形成第一弹性缺口，所述第二与第三定 位柱之间形成第二弹性缺口，所述本体抵靠于基部与所述第二定位柱，所 述第一凸耳抵靠于基部及第一定位柱远离第二定位柱的一侧，所述第二凸 耳抵靠于基部及所述第三定位柱远离第二定位柱的一侧。
7、 如权利要求 6所述的液晶显示装置，其中，所述安装部为四个， 分别位于所述本体的相对两侧，所述安装件为四个，分别与四个安装部配 合设置。
8、 如权利要求 6所述的液晶显示装置，其中，所述安装件由弹性材 料一体成型制成 ,所述导光板一体成型制成。
9、 如权利要求 8所述的液晶显示装置，其中，所述弹性材料为弹性 塑胶材料。
10、 如权利要求 6所述的液晶显示装置，还包括设于背板与导光板之 间的底反射片及设于导光板上方的光学膜片组。
11、 一种液晶显示装置，包括：背光模组、 设于背光模组上的胶框、 设于胶框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、 设于背板内的背光源、 及设于背板内且 定位与固定导光板的安装件，所述导光板包括本体及从本体侧边向外延伸 的数个安装部，每一安装部包括间隔设置的第一凸耳与第二凸耳，所述安 装件包括基部、 及由基部向上延伸并依次间隔设置的第一、 第二与第三定 位柱，所述第一与第二定位柱之间形成第一弹性缺口，所述第二与第三定 位柱之间形成第二弹性缺口，所述本体抵靠于基部与所述第二定位柱，所 述第一凸耳抵靠于基部及第一定位柱远离第二定位柱的一侧，所述第二凸 耳抵靠于基部及所述第三定位柱远离第二定位柱的一侧；
其中，所述安装部为四个，分别位于所述本体的相对两侧，所述安装 件为四个，分别与四个安装部配合设置。
12、 如权利要求 11 所述的液晶显示装置，其中，所述安装件由弹性 材料一体成型制成，所述导光板一体成型制成。
13、 如权利要求 12所述的液晶显示装置，其中，所述弹性材料为弹 性塑胶材料。
14、 如权利要求 11 所述的液晶显示装置，还包括设于背板与导光板 之间的底反射片及设于导光板上方的光学膜片组。
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