WO2016183855A1 - 导光板、背光模组以及液晶显示装置 - Google Patents

导光板、背光模组以及液晶显示装置 Download PDF

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Publication number
WO2016183855A1
WO2016183855A1 PCT/CN2015/079620 CN2015079620W WO2016183855A1 WO 2016183855 A1 WO2016183855 A1 WO 2016183855A1 CN 2015079620 W CN2015079620 W CN 2015079620W WO 2016183855 A1 WO2016183855 A1 WO 2016183855A1
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Prior art keywords
light
guide plate
light guide
plate
liquid crystal
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PCT/CN2015/079620
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English (en)
French (fr)
Inventor
张彦学
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武汉华星光电技术有限公司
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Priority to US14/768,368 priority Critical patent/US20160341872A1/en
Publication of WO2016183855A1 publication Critical patent/WO2016183855A1/zh

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    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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 liquid crystal display technologies, and more particularly to a light guide plate, a backlight module including the same, and a liquid crystal display device.
  • the liquid crystal display usually includes a liquid crystal display panel and a backlight module (Black Light Module, BL for short). Since the liquid crystal display panel itself does not have self-illuminating characteristics, the backlight module must be disposed under the liquid crystal display panel to provide a surface light source required for the liquid crystal display panel, such that the liquid crystal display panel can be provided by the backlight module. Display the image with the light source.
  • BL Black Light Module
  • the present invention provides a light guide plate and a backlight module, which can improve the light-emitting efficiency of the light source and the light guide plate.
  • a light guide plate wherein the light guide plate comprises a plate body and a light coupling member connected to one end of the plate body, the light coupling member comprises a light incident surface, a connecting surface parallel to the light incident surface, and respectively connected a top surface and a bottom surface of the light incident surface and the connecting surface; wherein the connecting surface is connected to the board body, the width of the light incident surface is larger than the width of the connecting surface, and the top surface has a wedge shape protruding upward a sloped surface a wedge-shaped bevel that protrudes downward; wherein the light-incident surface is provided with at least one fitting groove.
  • the top surface and the bottom surface have a vertically symmetrical structure, and the plate body and the optical coupling member are integrally formed.
  • the bottom surface further extends away from the plate body to form a flat extension.
  • the light incident surface is provided with a plurality of mounting grooves spaced apart from each other.
  • a backlight module including a light guide plate and a light source
  • the light guide plate includes a plate body and a light coupling member connected to one end of the plate body
  • the light coupling member includes a light incident surface.
  • a connecting surface parallel to the light incident surface and a top surface and a bottom surface respectively connected to the light surface and the connecting surface; wherein the connecting surface is connected to the board body, and the width of the light incident surface is larger than a width of the connecting surface, the top surface is an upwardly protruding wedge-shaped inclined surface, the bottom surface is a downwardly protruding wedge-shaped inclined surface; wherein the light-incident surface is provided with at least one mounting groove; the light source is disposed on the In the assembly slot.
  • the bottom surface further extends away from the plate body to form a flat extension portion, and the light source is mounted on the extension portion.
  • the light source is a light string comprising a plurality of LED lights, and the light incident surface is provided with a plurality of mounting grooves spaced apart from each other, and each LED light corresponds to one of the mounting grooves disposed therein.
  • the backlight module further includes a back plate, a reflector, and an optical film set.
  • the light guide plate and the light source are disposed in the back plate, and the reflective plate is disposed between the back plate and the light guide plate.
  • the optical film group is disposed on the light guide plate and above the board body.
  • the present invention also provides a liquid crystal display device including a liquid crystal panel and a backlight module, the liquid crystal panel is disposed opposite to the backlight module, and the backlight module provides a display light source to the liquid crystal panel to The liquid crystal panel displays an image, wherein the backlight module is the foregoing backlight module.
  • the light guide plate and the backlight module provided by the embodiments of the present invention provide a light coupling member having a double bevel wedge body, and a mounting groove is disposed in the optical coupling member, and the light source is disposed in the assembly groove, thereby reducing light leakage on the front and bottom of the light source.
  • the light-emitting efficiency of the light source and the light guide plate is improved.
  • FIG. 1 is a perspective view of a light guide plate according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing the structure of a backlight module according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention.
  • the light guide plate 1 includes a plate body 11 and a light coupling member 12 connected to one end of the plate body 11.
  • the plate body 11 has a flat plate structure, and the optical coupling member 12 is a wedge body having double slopes.
  • the optical coupling member 12 includes a light incident surface 121, a connecting surface 122 parallel to the light incident surface 121, and a top surface 123 and a bottom surface 124 respectively connected to the light surface 121 and the connecting surface 122.
  • the connecting surface 122 is connected to the board body 11.
  • the width of the light incident surface 121 is larger than the width of the connecting surface 122.
  • the top surface 123 is a wedge-shaped inclined surface protruding upward
  • the bottom surface 124 is A wedge-shaped bevel that protrudes downward.
  • the top surface 123 and the bottom surface 124 are vertically symmetrical, and the plate body 11 and the optical coupling member 12 are integrally formed.
  • At least one mounting groove 1211 is disposed on the light incident surface 121 (in the embodiment, the light incident surface 121 is provided with a plurality of mounting grooves 1211 spaced apart from each other). At the same time, the bottom surface 124 also extends away from the plate body 11 to form a flat extension 125.
  • the backlight module includes a light guide plate 1 , a light source 2 , a back plate 3 , a reflector 4 , and an optical film set 5 .
  • the reflector 4, the light guide plate 1 and the optical film group 5 are sequentially stacked on the back plate 3, and the reflector 4 is located below the plate 11 of the light guide plate 1, and the optical film group 5 is located on the light guide plate.
  • the light source 2 is mounted on the extension portion 125 and fitted in the fitting groove 1211.
  • the light source 2 is a light string comprising a plurality of LED lights 21, and each of the LED lights 21 corresponds to one of the mounting grooves 1211.
  • the light emitted from the light source 2 is incident on the plate body 11 via the optical coupling member 12, reflected by the light reflecting plate 4, and then emitted from the optical film group 5 above the plate body 11.
  • the backlight module provided above, by providing a light coupling member having a double bevel wedge body, and in the light A fitting groove is arranged in the coupling member, and the light source is disposed in the fitting groove to reduce light leakage at the front and bottom of the light source.
  • the optical coupling member is further connected with a flat extension portion, and the light source is mounted on the extension portion, thereby further reducing light leakage at the bottom of the light source and improving the light-emitting efficiency of the light source and the light guide plate.
  • the liquid crystal display device includes a liquid crystal panel 30 and a backlight module 40 .
  • the liquid crystal panel 30 is disposed opposite to the backlight module 40 .
  • the backlight module 40 provides a display light source to the liquid crystal panel 30 to enable the liquid crystal panel 30 to display an image.
  • the backlight module 40 uses the backlight module provided in this embodiment.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种导光板(1)，其中所述导光板(1)包括板体(11)以及连接于板体(11)一端的光耦合件(12)，所述光耦合件(12)包括一入光面(121)、与该入光面(121)平行相背的连接面(122)以及分别连接入光面(121)与连接面(122)的顶面(123)和底面(124)；其中，所述连接面(122)与所述板体(11)相连接，所述入光面(121)的宽度大于所述连接面(122)的宽度，所述顶面(123)呈向上突出的楔形斜面，所述底面(124)呈向下突出的楔形斜面；其中，所述入光面(121)上设置有至少一个装配槽(1211)。一种具有如上导光板(1)的背光模组以及包含该背光模组的液晶显示装置。提供的导光板(1)以及背光模组，通过设置具有双斜面楔形体的光耦合件(12)，可以减少光源正面和底部漏光，提高了光源(2)与导光板(1)的耦光效率。

Description

导光板、背光模组以及液晶显示装置 技术领域
本发明涉及液晶显示器技术领域，尤其是一种导光板、包含该导光板的背光模组以及液晶显示装置。
背景技术
随着光电与半导体技术的演进，也带动了平板显示器(Flat Panel Display)的蓬勃发展，而在诸多平板显示器中，液晶显示器(Liquid Crystal Display，简称LCD)因具有高空间利用效率、低消耗功率、无辐射以及低电磁干扰等诸多优越特性，已成为市场的主流。液晶显示器通常包括液晶显示面板(Liquid Crystal Panel)与背光模块(Black Light Module，简称BL)。由于液晶显示面板本身并不具备自发光的特性，因此必须将背光模组配置在液晶显示面板下方，以提供液晶显示面板所需的面光源，如此液晶显示面板可借由背光模组提供的面光源而显示影像。
随着消费电子产品的发展，高分辨率产品设计成为了提高产品竞争力的重要方式之一。分辨率的提高会导致产品的穿透率大幅降低，因此对于背光源的亮度要求也越来越高。在背光设计中，提高光源与导光板的藕光效率对于提升产品的亮度具有重要贡献。
发明内容
有鉴于此，本发明提供了一种导光板以及背光模组，其可以提高光源与导光板的藕光效率。
为了达到上述目的，本发明采用了如下技术方案：
一种导光板，其中，所述导光板包括板体以及连接于板体一端的光耦合件，所述光耦合件包括一入光面、与该入光面平行相背的连接面以及分别连接入光面与连接面的顶面和底面；其中，所述连接面与所述板体相连接，所述入光面的宽度大于所述连接面的宽度，所述顶面呈向上突出的楔形斜面，所述底面呈 向下突出的楔形斜面；其中，所述入光面上设置有至少一个装配槽。
其中，所述顶面和所述底面呈上下对称的结构，且所述板体与所述光耦合件为一体成型。
其中，所述底面还朝向远离所述板体的方向延伸，形成一平板状的延伸部。
其中，所述入光面上设置有相互间隔的多个装配槽。
本发明的另一方面是提供一种背光模组，包括导光板以及光源，其中，所述导光板包括板体以及连接于板体一端的光耦合件，所述光耦合件包括一入光面、与该入光面平行相背的连接面以及分别连接入光面与连接面的顶面和底面；其中，所述连接面与所述板体相连接，所述入光面的宽度大于所述连接面的宽度，所述顶面呈向上突出的楔形斜面，所述底面呈向下突出的楔形斜面；其中，所述入光面上设置有至少一个装配槽；所述光源设置于所述装配槽中。
其中，所述底面还朝向远离所述板体的方向延伸，形成一平板状的延伸部，所述光源装载于所述延伸部上。
其中，所述光源为包括多个LED灯组成的灯串，所述入光面上设置有相互间隔的多个装配槽，每一LED灯对应放置于其中的一个装配槽。
其中，该背光模组还包括背板、反光板以及光学膜片组，所述导光板和光源设置与所述背板中，所述反光板设置于所述背板与所述导光板之间且位于所述板体的下方，所述光学膜片组设置于所述导光板上且位于所述板体的上方。
本发明的还提供了一种液晶显示装置，包括液晶面板及背光模组，所述液晶面板与所述背光模组相对设置，所述背光模组提供显示光源给所述液晶面板，以使所述液晶面板显示影像，其中，所述背光模组为前述的背光模组。
有益效果：
本发明实施例提供的导光板以及背光模组，通过设置具有双斜面楔形体的光耦合件，并在光耦合件中设置装配槽，光源设置于装配槽中，可以减少光源正面和底部漏光，提高了光源与导光板的藕光效率。
附图说明
图1是本发明实施例提供的导光板的立体图图示。
图2是本发明实施例提供的背光模组的结构剖面图。
图3是本发明实施例提供的液晶显示装置的结构示意图。
具体实施方式
下面将结合附图以及具体实施例，对本发明实施例中的技术方案进行详细地描述，显然，所描述的实施例仅仅是本发明一部分实例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护范围。
本实施例首先提供了一种导光板，参阅图1，该导光板1包括板体11以及连接于板体11一端的光耦合件12。其中，板体11为平板状结构，光耦合件12为具有双斜面的楔形体。
具体地，所述光耦合件12包括一入光面121、与该入光面121平行相背的连接面122以及分别连接入光面121与连接面122的顶面123和底面124。其中，所述连接面122与所述板体11相连接，所述入光面121的宽度大于所述连接面122的宽度，所述顶面123呈向上突出的楔形斜面，所述底面124呈向下突出的楔形斜面。在本实施例中，所述顶面123和所述底面124呈上下对称的结构，且所述板体11与所述光耦合件12为一体成型。
进一步地，所述入光面121上设置有至少一个装配槽1211(本实施例中入光面121上设置有相互间隔的多个装配槽1211)。同时，所述底面124还朝向远离所述板体11的方向延伸，形成一平板状的延伸部125。
本实施例中还提供了一种包含如上所述的导光板的背光模组。图2是本实施例提供的背光模组的结构剖面图，图中导光板1是如图1中沿AA线的位置的剖面图。如图2所示，该背光模组包括导光板1、光源2、背板3、反光板4以及光学膜片组5。具体地，其中的反光板4、导光板1以及光学膜片组5依次叠层设置在背板3，并且反光板4位于导光板1的板体11的下方，光学膜片组5位于导光板1的板体11的上方。
其中，光源2装载于所述延伸部125上并且装配于所述装配槽1211中。本实施例中，所述光源2为包括多个LED灯21组成的灯串，每一LED灯21对应放置于其中的一个装配槽1211。光源2发出的光，经过光耦合件12耦合入射到板体11，由反光板4反射后再从板体11上方的光学膜片组5射出。
如上提供的背光模组中，通过设置具有双斜面楔形体的光耦合件，并在光 耦合件中设置装配槽，光源设置于装配槽中，可以减少光源正面和底部漏光。另外，其中的光耦合件还连接有一平板状的延伸部，光源装载于该延伸部上，进一步减少了光源底部漏光，提高了光源与导光板的藕光效率。
本实施例的另一方面是提供一种液晶显示装置，参阅图3，该液晶显示装置包括液晶面板30及背光模组40，所述液晶面板30与所述背光模组40相对设置，所述背光模组40提供显示光源给所述液晶面板30，以使所述液晶面板30显示影像，其中，所述背光模组40采用了本实施例中提供的背光模组。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
显然，本发明的保护范围并不局限于上诉的具体实施方式，本领域的技术人员可以对发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (14)

  1. 一种导光板，其中，所述导光板包括板体以及连接于板体一端的光耦合件，所述光耦合件包括一入光面、与该入光面平行相背的连接面以及分别连接入光面与连接面的顶面和底面；其中，所述连接面与所述板体相连接，所述入光面的宽度大于所述连接面的宽度，所述顶面呈向上突出的楔形斜面，所述底面呈向下突出的楔形斜面；其中，所述入光面上设置有至少一个装配槽。
  2. 根据权利要求1所述的导光板，其中，所述顶面和所述底面呈上下对称的结构，且所述板体与所述光耦合件为一体成型。
  3. 根据权利要求1所述的导光板，其中，所述底面还朝向远离所述板体的方向延伸，形成一平板状的延伸部。
  4. 根据权利要求3所述的导光板，其中，所述入光面上设置有相互间隔的多个装配槽。
  5. 一种背光模组，包括导光板以及光源，其中，
    所述导光板包括板体以及连接于板体一端的光耦合件，所述光耦合件包括一入光面、与该入光面平行相背的连接面以及分别连接入光面与连接面的顶面和底面；其中，所述连接面与所述板体相连接，所述入光面的宽度大于所述连接面的宽度，所述顶面呈向上突出的楔形斜面，所述底面呈向下突出的楔形斜面；其中，所述入光面上设置有至少一个装配槽；
    所述光源装配于所述装配槽中。
  6. 根据权利要求5所述的背光模组，其中，所述顶面和所述底面呈上下对称的结构，且所述板体与所述光耦合件为一体成型。
  7. 根据权利要求5所述的背光模组，其中，所述底面还朝向远离所述板体的方向延伸，形成一平板状的延伸部，所述光源装载与所述延伸部上。
  8. 根据权利要求7所述的背光模组，其中，所述光源为包括多个LED灯组成的灯串，所述入光面上设置有相互间隔的多个装配槽，每一LED灯对应放置于其中的一个装配槽。
  9. 根据权利要求5所述的背光模组，其中，该背光模组还包括背板、反光 板以及光学膜片组，所述导光板和光源设置于所述背板中，所述反光板设置于所述背板与所述导光板之间且位于所述板体的下方，所述光学膜片组设置于所述导光板上且位于所述板体的上方。
  10. 一种液晶显示装置，包括液晶面板及背光模组，所述液晶面板与所述背光模组相对设置，所述背光模组提供显示光源给所述液晶面板，以使所述液晶面板显示影像，其中，所述背光模组包括导光板以及光源，所述导光板包括板体以及连接于板体一端的光耦合件，所述光耦合件包括一入光面、与该入光面平行相背的连接面以及分别连接入光面与连接面的顶面和底面；其中，所述连接面与所述板体相连接，所述入光面的宽度大于所述连接面的宽度，所述顶面呈向上突出的楔形斜面，所述底面呈向下突出的楔形斜面；其中，所述入光面上设置有至少一个装配槽；所述光源装配于所述装配槽中。
  11. 根据权利要求10所述的液晶显示装置，其中，所述顶面和所述底面呈上下对称的结构，且所述板体与所述光耦合件为一体成型。
  12. 根据权利要求10所述的液晶显示装置，其中，所述底面还朝向远离所述板体的方向延伸，形成一平板状的延伸部，所述光源装载与所述延伸部上。
  13. 根据权利要求12所述的液晶显示装置，其中，所述光源为包括多个LED灯组成的灯串，所述入光面上设置有相互间隔的多个装配槽，每一LED灯对应放置于其中的一个装配槽。
  14. 根据权利要求10所述的液晶显示装置，其中，该背光模组还包括背板、反光板以及光学膜片组，所述导光板和光源设置于所述背板中，所述反光板设置于所述背板与所述导光板之间且位于所述板体的下方，所述光学膜片组设置于所述导光板上且位于所述板体的上方。
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