WO2016169072A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2016169072A1
WO2016169072A1 PCT/CN2015/078880 CN2015078880W WO2016169072A1 WO 2016169072 A1 WO2016169072 A1 WO 2016169072A1 CN 2015078880 W CN2015078880 W CN 2015078880W WO 2016169072 A1 WO2016169072 A1 WO 2016169072A1
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WIPO (PCT)
Prior art keywords
light
guide plate
light guide
central section
backlight module
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Ceased
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PCT/CN2015/078880
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English (en)
French (fr)
Inventor
曾杰
张彦学
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US14/762,597 priority Critical patent/US9817172B2/en
Publication of WO2016169072A1 publication Critical patent/WO2016169072A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • 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
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • G02F1/1335—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 in particular, to a backlight module and a liquid crystal display device.
  • the liquid crystal display industry is gradually moving towards more efficient, environmentally friendly and energy-saving.
  • With the gradual improvement of liquid crystal display technology how to improve the coupling efficiency of the backlight module of the liquid crystal display device and reduce the energy consumption have become the main direction of the whole industry research while ensuring good image quality.
  • the invention provides a backlight module and a liquid crystal display device, which have good coupling efficiency.
  • the present invention provides a backlight module including a light guide plate, a light source assembly, and a frame, the frame surrounding the light guide plate, and the light source assembly is disposed between the light incident surface of the light guide plate and the frame
  • the light source assembly includes a substrate, an illuminant, and a transparent body, the transparent body encapsulating the illuminant on the substrate, and an outer surface of the transparent body facing the illuminator is a light-emitting surface.
  • the light surface is provided with a groove facing the light incident surface of the light guide plate.
  • the light source assembly includes a central section that passes through a central axis of the illuminant and the illuminating surface, and the groove includes a V-shaped structure on the central section.
  • the V-shaped structure includes a first side and a second side, and an angle formed between the first side and the second side, the angle being opposite to the light guide plate, the range of the included angle Between 90 degrees and 120 degrees.
  • the light source assembly comprises a central section, the central section passing through a central axis of the illuminant and the illuminating surface, and the groove comprises an arc structure on the central section.
  • the light source assembly includes a central section, the central section passing through a central axis of the illuminator and the illuminating surface, wherein the groove has a trapezoidal structure, and the opening of the groove is a top edge of the trapezoidal structure, a bottom wall of the recess is a bottom edge of the trapezoidal structure, and a pair of sides of the trapezoidal structure are used for directing light emitted by the illuminant toward a center of the light guide plate The direction is gathered.
  • the transparent body includes a pair of limiting portions, the pair of limiting portions are respectively located at two sides of the light emitting surface, and the limiting portions respectively cooperate with the top surface and the bottom surface of the light guide plate to The light incident surface of the light guide plate is limited between the pair of limit portions.
  • the mating relationship between the limiting portion and the light guide plate is a tight fit without a gap.
  • the transparent body further includes a light shielding layer, and the light shielding layer is disposed on a surface of the pair of limiting portions that cooperates with the light guide plate.
  • the material of the transparent body is a resin containing a phosphor.
  • the present invention provides a liquid crystal display device comprising the backlight module of any of the above.
  • the backlight module and the liquid crystal display device provided by the present invention are provided with a groove on a light-emitting surface of the transparent body of the light source assembly, the groove facing the light-incident surface of the light guide plate, the groove making the light-emitting body
  • the emitted light is concentrated in the direction of the center of the light guide plate, which can improve the light coupling efficiency of the backlight module.
  • FIG. 1 is a schematic diagram of a backlight module according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a light source assembly of a backlight module according to a first embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a light source assembly of a backlight module according to a second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a light source assembly of a backlight module according to a third embodiment of the present invention.
  • Figure 5 is a light path diagram of the light source assembly of the present invention.
  • a backlight module provided by the present invention includes a light guide plate 10 , a light source assembly 20 , and a frame 30 .
  • the frame 30 surrounds the light guide plate 10 , and the light source assembly 20 is disposed on the light guide plate 10 . Between the face and the bezel 30.
  • the backlight module further includes a multilayer optical film 40 and a reflective sheet 50, and the reflective sheet 50 is located on the bottom surface of the light guide plate 10.
  • the multilayer optical film 40 is located on the top surface of the light guide plate 10 and is stacked.
  • the optical film 40 covers a partial area of the top surface of the light guide plate 10.
  • the bezel 30 is fixed to the edge of the reflection sheet 50 by the double-sided tape 60.
  • the backlight module further includes a flexible circuit board 70, a portion of which is attached to a region of the top surface of the light guide plate 10 that is not covered by the optical film 40, and other portions of the flexible circuit board 70 and the light source assembly 20 and the bezel 30
  • the connection is such that the light guide plate 10, the light source assembly 20, and the bezel 30 are fixed together by the flexible circuit board 70.
  • the light source assembly 20 includes a substrate 21, an illuminant 22 and a transparent body 23, and the transparent body 23 encapsulates the illuminant 22 on the substrate 21, the transparent
  • the outer surface of the body 23 facing the illuminant 22 is a light-emitting surface, and the light-emitting surface is provided with a groove 24, and the groove 24 faces the light-incident surface of the light guide plate 10, and the groove 24
  • the light emitted from the illuminator 22 is concentrated in the direction of the center of the light guide plate 10, and the light coupling efficiency of the backlight module can be improved.
  • FIG. 5 is a light path diagram of the light source assembly 20, and the light L emitted by the illuminant 22 (indicated by the arrowed line L) is transmitted in the transparent body 23.
  • the light L encounters the light exit surface S, the light L is refracted. Due to the presence of the groove 24, the normal A1 of the light L is refracted from the surface of the light guide plate 10. The normal A1 of the light L refracts causes the refracted light L to gather toward the center of the light guide plate 10, thereby improving the backlight mode.
  • the coupling efficiency of the group is a light path diagram of the light source assembly 20, and the light L emitted by the illuminant 22 (indicated by the arrowed line L) is transmitted in the transparent body 23.
  • the light L encounters the light exit surface S, the light L is refracted. Due to the presence of the groove 24, the normal A1 of the light L is refracted from the surface of the light guide plate 10.
  • the design of the groove 24 on the light exit surface S of the light source assembly 20 of the present invention may be, but not limited to, a V-shaped structure, a curved structure, a trapezoidal structure, etc., as described in detail below.
  • the light source assembly 20 including a central section that passes through a central axis of the illuminant 22 and the illuminating surface S, at the center
  • the groove 24 comprises a V-shaped structure.
  • the V-shaped structure includes a first side and a second side, and an angle B is formed between the first side and the second side, the angle B is opposite to the light guide plate 10, and the angle B The range is between 90 degrees and 120 degrees.
  • FIG 3 shows a second embodiment of a light source assembly 20, the light source assembly 20 including a central section that passes through a central axis of the illuminant 22 and the illuminating surface, on the central cross section,
  • the groove 24 includes an arcuate structure.
  • FIG. 4 shows a second embodiment of a light source assembly 20 that includes a central section that passes through a central axis of the illuminant 22 and the illuminating surface, on the central cross section,
  • the groove 24 has a trapezoidal structure, the opening of the groove 24 is a top edge of the trapezoidal structure, and the bottom wall of the groove 24 is a bottom edge of the trapezoidal structure, and a pair of sides of the trapezoidal structure
  • the light emitted from the illuminator 22 is concentrated toward the center of the light guide plate 10.
  • the transparent body 23 includes a pair of limiting portions 26, and the pair of limiting portions 26 are respectively located at two sides of the light emitting surface S, and the limiting portions 26 are respectively associated with the light guide plate 10
  • the top surface and the bottom surface cooperate to limit the light incident surface of the light guide plate 10 between the pair of limiting portions 26.
  • Such a structure enables a tight structure between the light incident surface of the light guide plate 10 and the light source assembly 20, and can prevent or reduce light leakage at the junction of the light guide plate 10 and the light source assembly 20, thereby enhancing the efficiency of light conduction of the backlight module.
  • the positioning function of the light guide plate 10 is also increased during the assembly process.
  • the mating relationship between the pair of limiting portions 26 and the light guide plate 10 is a tight fit without gaps.
  • the stopper portion 26 can sandwich the light guide plate 10 by its own elastic deformation ability.
  • the transparent body 23 further includes a light shielding layer (not shown), and the light shielding layer is disposed on a surface of the pair of limiting portions 26 that cooperates with the light guide plate 10.
  • the structure of the light shielding layer is more advantageous for preventing or reducing light leakage at the junction of the light guide plate 10 and the light source assembly 20.
  • the material of the transparent body 23 is a resin containing a phosphor.
  • the present invention also provides a liquid crystal display device including the backlight module.
  • the backlight module and the liquid crystal display device provided by the present invention are provided with a groove 24 on the light-emitting surface of the transparent body 23 of the light source assembly 20, the groove 24 facing the light-incident surface of the light guide plate 10, the groove
  • the light emitted from the illuminant 22 is concentrated in the direction of the center of the light guide plate 10, and the light coupling efficiency of the backlight module can be improved.

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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)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种液晶显示装置及背光模组，背光模组包括导光板（10）、光源组件（20）及边框（30），所述边框（30）包围所述导光板（10），所述光源组件（20）设于所述导光板（10）的入光面与所述边框（30）之间，所述光源组件（20）包括基板（21）、发光体（22）和透明体（23），所述透明体（23）将所述发光体（22）封装在所述基板（21）上，所述透明体（23）之与所述发光体（22）正对的外表面为出光面，所述出光面设有凹槽（24），所述凹槽（24）正对所述导光板（10）的入光面，所述凹槽（24）使得所述发光体（22）射出的光线向所述导光板（10）中心的方向聚集，能够提高所述背光模组的耦光效率。

Description

背光模组及液晶显示装置
本发明要求2015年4月22日递交的发明名称为“背光模组及液晶显示装置”的申请号201510193525.6的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示技术领域，尤其涉及一种背光模组及液晶显示装置。
背景技术
液晶显示行业逐步向着更高效，更环保，更节能的方向发展。随着液晶显示技术的逐步完善，在保证良好画质的情况下，如何提高液晶显示装置的背光模组的耦光效率，从而减少能源的消耗就成为整个行业研究的主要方向。
发明内容
本发明提供一种背光模组和液晶显示装置，具有好的耦光效率。
为了实现上述目的，本发明实施方式提供如下技术方案：
一方面，本发明提供一种背光模组，包括导光板、光源组件及边框，所述边框包围所述导光板，所述光源组件设于所述导光板的入光面与所述边框之间，所述光源组件包括基板、发光体和透明体，所述透明体将所述发光体封装在所述基板上，所述透明体之与所述发光体正对的外表面为出光面，所述出光面设有凹槽，所述凹槽正对所述导光板的入光面。
其中，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽包括V形结构。
其中，所述V形结构包括第一边和第二边，所述第一边和所述第二边之间形成夹角，所述夹角正对所述导光板，所述夹角的范围在90度和120度之间。
其中，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽包括弧形结构。
其中，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽呈梯形结构，所述凹槽的开口为所述梯形结构的顶边，所述凹槽的底壁为所述梯形结构的底边，所述梯形结构的一对侧边用于将所述发光体射出的光线向所述导光板中心的方向聚集。
其中，所述透明体包括一对限位部，所述对限位部分别位于所述出光面的两侧，且所述限位部分别与所述导光板的顶面和底面配合，以将导光板的入光面限位在所述对限位部之间。
其中，所述对限位部与所述导光板之间的配合关系为无间隙的紧密配合。
其中，所述透明体还包括遮光层，所述遮光层设于所述对限位部与所述导光板配合的面上。
其中，所述透明体的材质为含有荧光粉的树脂。
另一方面，本发明还提供一种液晶显示装置，所述液晶显示装置包括上述任意一项所述的背光模组。
本发明提供的背光模组及液晶显示装置，通过在光源组件的透明体的出光面设置凹槽，所述凹槽正对所述导光板的入光面，所述凹槽使得所述发光体射出的光线向所述导光板中心的方向聚集，能够提高所述背光模组的耦光效率。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以如这些附图获得其他的附图。
图1是本发明一种实施方式提供的背光模组的示意图。
图2是本发明第一种实施方式提供的背光模组之光源组件的示意图。
图3是本发明第二种实施方式提供的背光模组之光源组件的示意图。
图4是本发明第三种实施方式提供的背光模组之光源组件的示意图。
图5是本发明之光源组件的光路图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
请参阅图1，本发明提供的背光模组包括导光板10、光源组件20及边框30，所述边框30包围所述导光板10，所述光源组件20设于所述导光板10的入光面与所述边框30之间。背光模组还包括多层光学膜片40和反射片50，反射片50位于导光板10的底面。多层光学膜片40位于导光板10的顶面，且层叠设置。光学膜片40覆盖导光板10顶面的部分区域。边框30通过双面胶60固定于反射片50的边缘处。背光模组还包括柔性电路板70，柔性电路板70之一部分贴附在导光板10的顶面之未被光学膜片40覆盖的区域，柔性电路板70的其它部分与光源组件20和边框30连接，这样通过柔性电路板70将导光板10、光源组件20和边框30固定在一起。
请参阅图2、图3和图4，所述光源组件20包括基板21、发光体22和透明体23，所述透明体23将所述发光体22封装在所述基板21上，所述透明体23之与所述发光体22正对的外表面为出光面，所述出光面设有凹槽24，所述凹槽24正对所述导光板10的入光面，所述凹槽24使得所述发光体22射出的光线向所述导光板10中心的方向聚集，能够提高所述背光模组的耦光效率。
图5所示为光源组件20发光的光路图，发光体22所发出的光线L(用带箭头的线L表示)在透明体23中传输，当光线L遇到出光面S时，光线L折射，由于凹槽24的存在，光线L折射的法线A1较导光板10的表面倾斜，光线L折射的法线A1就会导致折射后的光线L朝向导光板10中心方向聚集，从而提高背光模组的耦光效率。
本发明光源组件20之出光面S上的凹槽24的设计可以为但不限于V形结构、弧形结构、梯形结构等，具体描述如下。
图2所示为光源组件20的第一种实施方式，所述光源组件20包括中心截面，所述中心截面经过所述发光体22之中心轴和所述出光面S，在所述中心 截面上，所述凹槽24包括V形结构。所述V形结构包括第一边和第二边，所述第一边和所述第二边之间形成夹角B，所述夹角B正对所述导光板10，所述夹角B的范围在90度和120度之间。
图3所示为光源组件20的第二种实施方式，所述光源组件20包括中心截面，所述中心截面经过所述发光体22之中心轴和所述出光面，在所述中心截面上，所述凹槽24包括弧形结构。
图4所示为光源组件20的第二种实施方式，所述光源组件20包括中心截面，所述中心截面经过所述发光体22之中心轴和所述出光面，在所述中心截面上，所述凹槽24呈梯形结构，所述凹槽24的开口为所述梯形结构的顶边，所述凹槽24的底壁为所述梯形结构的底边，所述梯形结构的一对侧边用于将所述发光体22射出的光线向所述导光板10中心的方向聚集。
进一步而言，所述透明体23包括一对限位部26，所述对限位部26分别位于所述出光面S的两侧，且所述限位部26分别与所述导光板10的顶面和底面配合，以将导光板10的入光面限位在所述对限位部26之间。这样的结构使得导光板10的入光面与光源组件20之间紧密结构，能够防止或减少导光板10与光源组件20结合处漏光，从而增强了背光模组光传导的效率。而且在装配的过程中，也增加了导光板10的定位功能。
所述对限位部26与所述导光板10之间的配合关系为无间隙的紧密配合。限位部26可以通过自身的弹性变形能力夹住导光板10。
进一步而言，所述透明体23还包括遮光层(未图示)，所述遮光层设于所述对限位部26与所述导光板10配合的面上。遮光层的结构更加有利于防止或减少导光板10与光源组件20结合处漏光。
所述透明体23的材质为含有荧光粉的树脂。
本发明还提供一种液晶显示装置，所述液晶显示装置包括所述的背光模组。
本发明提供的背光模组及液晶显示装置，通过在光源组件20的透明体23的出光面设置凹槽24，所述凹槽24正对所述导光板10的入光面，所述凹槽24使得所述发光体22射出的光线向所述导光板10中心的方向聚集，能够提高所述背光模组的耦光效率。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (18)

  1. 一种背光模组，包括导光板、光源组件及边框，所述边框包围所述导光板，所述光源组件设于所述导光板的入光面与所述边框之间，所述光源组件包括基板、发光体和透明体，所述透明体将所述发光体封装在所述基板上，其特征在于，所述透明体之与所述发光体正对的外表面为出光面，所述出光面设有凹槽，所述凹槽正对所述导光板的入光面。
  2. 如权利要求1所述的背光模组，其特征在于，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽包括V形结构。
  3. 如权利要求2所述的背光模组，其特征在于，所述V形结构包括第一边和第二边，所述第一边和所述第二边之间形成夹角，所述夹角正对所述导光板，所述夹角的范围在90度和120度之间。
  4. 如权利要求1所述的背光模组，其特征在于，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽包括弧形结构。
  5. 如权利要求1所述的背光模组，其特征在于，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽呈梯形结构，所述凹槽的开口为所述梯形结构的顶边，所述凹槽的底壁为所述梯形结构的底边，所述梯形结构的一对侧边用于将所述发光体射出的光线向所述导光板中心的方向聚集。
  6. 如权利要求1所述的背光模组，其特征在于，所述透明体包括一对限位部，所述对限位部分别位于所述出光面的两侧，且所述限位部分别与所述导光板的顶面和底面配合，以将导光板的入光面限位在所述对限位部之间。
  7. 如权利要求6所述的背光模组，其特征在于，所述对限位部与所述导光板之间的配合关系为无间隙的紧密配合。
  8. 如权利要求6所述的背光模组，其特征在于，所述透明体还包括遮光层，所述遮光层设于所述对限位部与所述导光板配合的面上。
  9. 如权利要求1所述的背光模组，其特征在于，所述透明体的材质为含有 荧光粉的树脂。
  10. 一种液晶显示装置，包括背光模组，所述背光模组包括导光板、光源组件及边框，所述边框包围所述导光板，所述光源组件设于所述导光板的入光面与所述边框之间，所述光源组件包括基板、发光体和透明体，所述透明体将所述发光体封装在所述基板上，其特征在于，所述透明体之与所述发光体正对的外表面为出光面，所述出光面设有凹槽，所述凹槽正对所述导光板的入光面。
  11. 如权利要求10所述的液晶显示装置，其特征在于，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽包括V形结构。
  12. 如权利要求11所述的液晶显示装置，其特征在于，所述V形结构包括第一边和第二边，所述第一边和所述第二边之间形成夹角，所述夹角正对所述导光板，所述夹角的范围在90度和120度之间。
  13. 如权利要求10所述的液晶显示装置，其特征在于，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽包括弧形结构。
  14. 如权利要求10所述的液晶显示装置，其特征在于，所述光源组件包括中心截面，所述中心截面经过所述发光体之中心轴和所述出光面，在所述中心截面上，所述凹槽呈梯形结构，所述凹槽的开口为所述梯形结构的顶边，所述凹槽的底壁为所述梯形结构的底边，所述梯形结构的一对侧边用于将所述发光体射出的光线向所述导光板中心的方向聚集。
  15. 如权利要求10所述的液晶显示装置，其特征在于，所述透明体包括一对限位部，所述对限位部分别位于所述出光面的两侧，且所述限位部分别与所述导光板的顶面和底面配合，以将导光板的入光面限位在所述对限位部之间。
  16. 如权利要求15所述的液晶显示装置，其特征在于，所述对限位部与所述导光板之间的配合关系为无间隙的紧密配合。
  17. 如权利要求15所述的液晶显示装置，其特征在于，所述透明体还包括遮光层，所述遮光层设于所述对限位部与所述导光板配合的面上。
  18. 如权利要求10所述的液晶显示装置，其特征在于，所述透明体的材质为含有荧光粉的树脂。
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