WO2019127755A1 - Led光源以及侧入式背光模组、液晶显示装置 - Google Patents

Led光源以及侧入式背光模组、液晶显示装置 Download PDF

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Publication number
WO2019127755A1
WO2019127755A1 PCT/CN2018/073478 CN2018073478W WO2019127755A1 WO 2019127755 A1 WO2019127755 A1 WO 2019127755A1 CN 2018073478 W CN2018073478 W CN 2018073478W WO 2019127755 A1 WO2019127755 A1 WO 2019127755A1
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WIPO (PCT)
Prior art keywords
retaining wall
led
light source
backlight module
liquid crystal
Prior art date
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PCT/CN2018/073478
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English (en)
French (fr)
Inventor
付琳琳
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惠州市华星光电技术有限公司
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Application filed by 惠州市华星光电技术有限公司 filed Critical 惠州市华星光电技术有限公司
Priority to US15/749,496 priority Critical patent/US20200088934A1/en
Publication of WO2019127755A1 publication Critical patent/WO2019127755A1/zh

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Classifications

    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • 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
    • 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
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular to an LED light source, and to an edge-lit backlight module and a liquid crystal display device including the LED light source.
  • LCD Liquid Crystal Display
  • LCD monitors have low power consumption and are characterized by high image quality, small size, and light weight. Therefore, they are favored by everyone and become the mainstream of displays.
  • Most of the liquid crystal displays on the market are backlight type liquid crystal displays, including a liquid crystal display panel and a backlight module.
  • the liquid crystal display panel and the backlight module are oppositely disposed, and the backlight module provides a display light source to the liquid crystal display panel to enable the liquid crystal display panel. Display images.
  • the liquid crystal display panel is usually composed of a thin film transistor array substrate, a color filter substrate, and a liquid crystal layer.
  • the color filter substrate includes a red color resist, a green color resist, and a blue color resist.
  • the function of the color filter is to filter the white light passing through the liquid crystal layer into beams of different colors, and the beams of different colors reconverge to form an image.
  • the backlight module is mainly used to generate a white light source for the liquid crystal panel.
  • the backlight of the conventional liquid crystal display device adopts a cold cathode fluorescent lamp (CCFL), but the CCFL backlight has poor color reproduction ability, low luminous efficiency, high discharge voltage, poor discharge characteristics at low temperature, and stable gradation time for heating. Disadvantages, backlight technology using LED backlights has been developed, the most common of which is the LED side-entry backlight, which is disposed on the side of the light guide plate.
  • the LED is a Lambertian-type illumination
  • the light emitted at a large angle does not enter the light guide plate, but is directly emitted at an obliquely upward angle, and is incident on the upper diaphragm, causing light leakage.
  • a problem of a bright line entering the light side appears on the display screen, resulting in poor display quality of the display device.
  • the present invention provides an LED light source, which is applied to a side-entry backlight module, which can effectively avoid the problem of light leakage from a large angle in the backlight module and improve the display quality of the product.
  • An LED light source comprising a printed circuit board and an LED illuminator, wherein the printed circuit board is provided with a retaining wall, the retaining wall comprising an interconnecting retaining wall body and a retaining wall extension, the retaining wall body surrounding The peripheral side of the LED illuminator extends from a side of the LED illuminator to an upper surface of the LED illuminator.
  • the LED illuminator comprises an LED chip electrically connected to the printed circuit board and a phosphor layer coated on the LED chip.
  • the retaining wall body has a square annular structure or a circular annular structure, and the extending portion of the retaining wall has a flat plate structure.
  • the retaining wall is formed by preparing an elastic material.
  • the present invention also provides a side-entry backlight module including a back plate and a light guide plate and an LED light source disposed on the back plate, the LED light source being located at a side of the light guide plate, wherein the LED The light source is an LED light source as described above, and the retaining wall extension is located on a side of the LED illuminator that faces away from the backing plate.
  • the retaining wall extension extends to the upper surface of the LED illuminator and is in contact with the light guide plate.
  • the back plate is connected with aluminum extrusion, and the LED light source is connected to the aluminum extrusion.
  • the side-lit backlight module further includes a reflective sheet and an optical film set, the reflective sheet is disposed on the back plate, the light guide plate is disposed on the reflective sheet, and the optical film set is disposed. On the light guide plate.
  • Another aspect of the present invention provides a liquid crystal display device including a liquid crystal display panel and the side-entry backlight module as described above, wherein the liquid crystal display panel and the side-entry backlight module are oppositely disposed.
  • the side-lit backlight module provides a display light source to the liquid crystal display panel to enable the liquid crystal display panel to display a picture.
  • the LED light source provided by the embodiment of the invention has a retaining wall extension on one side of the LED illuminator, which is applied to the side-entry backlight module, which can effectively avoid light leakage from a large angle in the backlight module. Problems, improve the display quality of the product.
  • the extension of the retaining wall is adjacent to the LED illuminator, and the extension of the retaining wall of a smaller size can be used to block large-angle light leakage, which is advantageous for achieving a narrow border or a frameless design of the display product.
  • FIG. 1 is a schematic cross-sectional structural view of an LED light source according to an embodiment of the present invention
  • FIG. 2 is a schematic perspective structural view of an LED light source according to an embodiment of the present invention.
  • FIG. 3 is a schematic perspective structural view of an LED light source according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a side-entry backlight module according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention.
  • the LED light source 10 includes a printed circuit board (PCB) 1 and an LED illuminator 2, and the printed circuit board 1 is further provided with a retaining wall 3
  • the retaining wall 3 includes a connecting wall body 3a and a retaining wall extending portion 3b.
  • the retaining wall body 3a surrounds a peripheral side of the LED illuminator 2, and the retaining wall extension 3b illuminates at the LED One side of the body 2 extends to protrude from the upper surface of the LED illuminator 2.
  • the LED illuminator 2 includes an LED chip 2a and a phosphor layer 2b.
  • the LED chip 2a is electrically connected to the printed circuit board 1.
  • the phosphor layer 2b is disposed on the LED board 2b.
  • the LED chip 2a is described.
  • An external driving circuit inputs a driving signal to the LED chip 2a through the printed circuit board 1 to cause the LED chip 2a to emit light, and the light emitted by the LED chip 2a excites the phosphor layer 2b to further emit light, and finally The light emitted by the LED illuminator 2 is white light.
  • the retaining wall body 3a has a square annular structure, and the LED illuminator 2 is encapsulated in a hollow portion of the retaining wall body 3a, and the retaining wall extension 3b is One side of the LED illuminator 2 is extended and has a flat plate structure.
  • the retaining wall body 3a may also have a circular annular structure, and the LED illuminator 2 is also encapsulated in a hollow portion of the retaining wall body 3a, correspondingly
  • the retaining wall extension 3b is extended on one side of the LED illuminator 2 and has a flat plate structure.
  • the retaining wall 3 is preferably formed using an elastic material, such as a rubber material.
  • the LED light source 10 as described above is provided with an extended convex retaining wall extension 3b on one side of the LED illuminator 2, the retaining wall extension 3b blocking (reflecting) the LED illuminator 2 here Light with a larger angle of emission on one side.
  • the embodiment further provides a side-in type backlight module.
  • the side-entry backlight module 100 includes a back plate 11, a reflection sheet 12, a light guide plate 13, an optical film group 14, and the present invention.
  • Embodiments The LED light source 10 provided by the foregoing.
  • the reflective sheet 12, the light guide plate 13 and the optical film group 14 are sequentially disposed on the back plate 11, and the LED light source 10 is disposed on the back plate 11 and located at a side of the light guide plate 13. .
  • the light emitted by the LED light source 10 is conducted through the light guide plate 13, is reflected by the reflective sheet 12 on the back surface of the light guide plate 13, is incident on the optical film group 14, and then from the optical film
  • the upper surface of the sheet set 14 is emitted.
  • the optical film set 14 includes a prism sheet, a diaper film, and the like.
  • an aluminum extrusion 15 is further connected to the back plate 11, and the LED light source 10 is connected to the aluminum extrusion 15.
  • the aluminum extrusion 15 can dissipate heat generated by the LED light source 10.
  • the retaining wall extension 3b of the LED light source 10 is located on a side of the LED illuminator 2 facing away from the backboard 11, and the retaining wall extension 3b can block (reflect)
  • the light having a large emission angle of the LED illuminator 2 on this side effectively avoids the problem of light leakage from a large angle in the backlight module.
  • the retaining wall extension 3b is adjacent to the LED illuminator 2, and only needs to be provided with a small-sized retaining wall extension 3b to block large-angle light leakage, and the backlight module has a small frame. Conducive to the narrow border or borderless design of the final display product.
  • the retaining wall extension 3b extends and protrudes from the upper surface of the LED illuminator 2 and is connected to the light guide plate 13 in contact with each other.
  • the wall extension 3b can function to support the light guide plate 13 to limit the light guide plate 13 in the lateral direction.
  • the liquid crystal display device includes the side-entry backlight module 100 and the liquid crystal display panel 200 as described above, and the liquid crystal display panel 200
  • the side-lit backlight module 100 is provided with a display light source to the liquid crystal display panel 200 to display the image on the liquid crystal display panel 200.
  • the liquid crystal display panel 200 includes an array substrate 201 and a filter substrate 202 disposed opposite to each other, and further includes a liquid crystal layer 203 between the array substrate 201 and the filter substrate 202.
  • the LED light source and the corresponding side-entry backlight module provided by the embodiments of the present invention are provided with a retaining wall extension on one side of the LED illuminator, and the retaining wall extension can effectively avoid backlight
  • the problem of light leakage from a large angle in the module improves the display quality of the product.
  • the extension of the retaining wall is adjacent to the LED illuminator, and the extension of the retaining wall of a smaller size can be used to block large-angle light leakage, which is advantageous for achieving a narrow border or a frameless design of the final display product (liquid crystal display device).

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

Abstract

一种LED光源（10），包括印刷电路板（1）和LED发光体（2），其中，印刷电路板（1）上设置有挡墙（3），挡墙（3）包括相互连接挡墙本体（3a）和挡墙延伸部（3b），挡墙本体（3a）环绕于LED发光体（2）的四周侧面，挡墙延伸部（3b）在LED发光体（2）的一侧延伸凸起于LED发光体（2）的上表面。一种侧入式背光模组（100）及包含侧入式背光模组（100）的液晶显示装置，侧入式背光模组（100）包括背板（11）以及设置在背板（11）上的导光板（13）和LED光源（10），LED光源（10）位于导光板（13）的侧面，其中，挡墙延伸部（3b）位于LED发光体（2）的背离背板（11）的一侧。

Description

LED光源以及侧入式背光模组、液晶显示装置 技术领域
本发明涉及液晶显示技术领域，具体涉及一种LED光源，还涉及包含所述LED光源的侧入式背光模组和液晶显示装置。
背景技术
液晶显示器(Liquid Crystal Display，LCD)，为平面超薄的显示设备，它由一定数量的彩色或黑白像素组成，放置于光源或者反射面前方。液晶显示器功耗很低，并且具有高画质、体积小、重量轻的特点，因此倍受大家青睐，成为显示器的主流。现有市场上的液晶显示器大部分为背光型液晶显示器，包括液晶显示面板及背光模组，液晶显示面板与背光模组相对设置，背光模组提供显示光源给液晶显示面板，以使液晶显示面板显示影像。
液晶显示面板通常由薄膜晶体管阵列基板、彩色滤光基板和液晶层组成。彩色滤光基板中包含有红色色阻、绿色色阻和蓝色色阻，其作用是将通过液晶层的白光过滤为不同颜色的光束，各不同颜色的光束重新汇聚形成图像画面。背光模组主要是用于产生白色光源提供给液晶面板。传统的液晶显示设备的背光源采用冷阴极荧光灯(CCFL)，但是由于CCFL背光源存在色彩还原能力较差、发光效率低、放电电压高、低温下放电特性差、加热达到稳定灰度时间长等缺点，当前已经开发出使用LED背光源的背光源技术，其中最为普遍的是LED侧入式背光源，将LED光源设置在导光板的侧面。
对于侧入式LED背光而言，由于LED为朗伯型发光，大角度出射的光不会进入导光板，而是沿倾斜向上的角度直接出射，入射到上方的膜片上，造成漏光，在显示画面中出现入光侧亮线的问题，导致显示装置的显示品质不佳。
发明内容
有鉴于此，本发明提供了一种LED光源，其应用于侧入式背光模组中，可以有效地避免背光模组中大角度出射的光线漏光的问题，提升产品的显示品质。
为了达到上述的目的，本发明采用了如下的技术方案：
一种LED光源，包括印刷电路板和LED发光体，其中，所述印刷电路板上设置有挡墙，所述挡墙包括相互连接挡墙本体和挡墙延伸部，所述挡墙本体环绕于所述LED发光体的四周侧面，所述挡墙延伸部在所述LED发光体的一侧延伸凸起于所述LED发光体的上表面。
其中，所述LED发光体包括电性连接到所述印刷电路板的LED芯片以及覆设于所述LED芯片上的荧光粉层。
其中，所述挡墙本体呈方形环状结构或圆形环状结构，所述挡墙延伸部呈平板状结构。
其中，所述挡墙由弹性材料制备形成。
本发明还提供了一种侧入式背光模组，其包括背板以及设置在所述背板上的导光板和LED光源，所述LED光源位于所述导光板的侧面，其中，所述LED光源为如上所述的LED光源，所述挡墙延伸部位于所述LED发光体的背离所述背板的一侧。
其中，所述挡墙延伸部延伸凸起于所述LED发光体的上表面并抵触连接到所述导光板。
其中，所述背板上连接有铝挤，所述LED光源连接到所述铝挤上。
其中，所述侧入式背光模组还包括反射片和光学膜片组，所述反射片设置于所述背板上，所述导光板设置于所述反射片上，所述光学膜片组设置于所述导光板上。
本发明的另一方面是提供一种液晶显示装置，其包括液晶显示面板和如上所述的侧入式背光模组，其中，所述液晶显示面板和所述侧入式背光模组相对设置，所述侧入式背光模组向所述液晶显示面板提供显示光源，以使所述液晶显示面板显示画面。
本发明实施例提供的LED光源，其中在LED发光体的一侧设置有挡墙延伸部，其应用于侧入式背光模组中，可以有效地避免背光模组中大角度出射的光线漏光的问题，提升产品的显示品质。另外，挡墙延伸部临近于LED发光体，设置较小尺寸的挡墙延伸部就可以实现遮挡大角度漏光，有利于实现显示产品的窄边框或无边框设计。
附图说明
图1是本发明实施例提供的LED光源的剖面结构示意图；
图2是本发明实施例提供的LED光源的立体结构示意图；
图3是本发明另一实施例提供的LED光源的立体结构示意图；
图4是本发明实施例提供的侧入式背光模组的结构示意图；
图5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
为使本发明的目的、技术方案和优点更加清楚，下面结合附图对本发明的具体实施方式进行详细说明。这些优选实施方式的示例在附图中进行了例示。附图中所示和根据附图描述的本发明的实施方式仅仅是示例性的，并且本发明并不限于这些实施方式。
在此，还需要说明的是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与根据本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
本实施例首先提供了一种LED光源，参阅图1和图2，所述LED光源10包括印刷电路板(PCB)1和LED发光体2，所述印刷电路板1上还设置有挡墙3，所述挡墙3包括相互连接挡墙本体3a和挡墙延伸部3b，所述挡墙本体3a环绕于所述LED发光体2的四周侧面，所述挡墙延伸部3b在所述LED发光体2的一侧延伸凸起于所述LED发光体2的上表面。
其中，如图1所示，所述LED发光体2包括LED芯片2a和荧光粉层2b，所述LED芯片2a电性连接到所述印刷电路板1，所述荧光粉层2b覆设于所述LED芯片2a。外部的驱动电路通过所述印刷电路板1向所述LED芯片2a输入驱动信号，使所述LED芯片2a发光，所述LED芯片2a发出的光线激发所述荧光粉层2b进一步发光，最终从所述LED发光体2发出的光线为白光。
本实施例中，如图2所示，所述挡墙本体3a呈方形环状结构，所述LED发光体2封装在所述挡墙本体3a的中空部分，所述挡墙延伸部3b在所述LED发光体2的一侧延伸凸起，呈平板状结构。在另外的一个实施例中，如图3所示，所述挡墙本体3a也可以是呈圆形环状结构，所述LED发光体2也是封装在所述 挡墙本体3a的中空部分，相应地，所述挡墙延伸部3b在所述LED发光体2的一侧延伸凸起，呈平板状结构。
其中，所述挡墙3优选为使用弹性材料制备形成，例如橡胶材料。
如上所述的LED光源10，通过在所述LED发光体2的一侧设置延伸凸起的挡墙延伸部3b，所述挡墙延伸部3b可以阻挡(反射)所述LED发光体2在这一侧的发射角度较大的光线。
本实施例进一步提供了一种侧入式背光模组，如图4所示，所述侧入式背光模组100包括背板11、反射片12、导光板13、光学膜片组14以及本实施例前述提供的LED光源10。
具体地，所述反射片12、导光板13以及光学膜片组14依次设置在所述背板11上，所述LED光源10设置在所述背板11上并且位于所述导光板13的侧面。所述LED光源10发出的光线经过所述导光板13的传导，在所述导光板13的背面由所述反射片12反射之后入射到所述光学膜片组14，然后再从所述光学膜片组14的上表面发射出，通常地，所述光学膜片组14包括棱镜片和増透膜等。
本实施例中，如图4所示，所述背板11上还连接有铝挤15，所述LED光源10连接到所述铝挤15上。所述铝挤15可以对所述LED光源10产生的热量进行散热。
其中，如图4所示，所述LED光源10中的挡墙延伸部3b位于LED发光体2的相对背离所述背板11的一侧，所述挡墙延伸部3b可以阻挡(反射)所述LED发光体2在这一侧的发射角度较大的光线，有效地避免背光模组中大角度出射的光线漏光的问题。进一步地，所述挡墙延伸部3b是临近于所述LED发光体2，只需要设置较小尺寸的挡墙延伸部3b就可以实现遮挡大角度漏光，背光模组具有较小的边框，有利于实现最终显示产品的窄边框或无边框设计。
进一步地，本实施例中，如图4所示，所述挡墙延伸部3b延伸凸起于所述LED发光体2的上表面并抵触连接到所述导光板13，由此，所述挡墙延伸部3b可以起到支撑所述导光板13的作用，在横向上对所述导光板13进行限位。
本实施例的另一方面是提供一种液晶显示装置，如图5所示，所述液晶显示装置包括如上所述的侧入式背光模组100和液晶显示面板200，所述液晶显示面板200与所述侧入式背光模组100相对设置，所述侧入式背光模组100提供 显示光源给所述液晶显示面板200，以使所述液晶显示面板200显示影像。其中，液晶显示面板200包括相对设置的阵列基板201和滤光基板202，还包括位于阵列基板201和滤光基板202之间的液晶层203。
综上所述，本发明实施例提供的LED光源及其相应的侧入式背光模组，其中在LED发光体的一侧设置有挡墙延伸部，所述挡墙延伸部可以有效地避免背光模组中大角度出射的光线漏光的问题，提升产品的显示品质。另外，所述挡墙延伸部临近于LED发光体，设置较小尺寸的挡墙延伸部就可以实现遮挡大角度漏光，有利于实现最终显示产品(液晶显示装置)的窄边框或无边框设计。
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。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (20)

  1. 一种LED光源，包括印刷电路板和LED发光体，其中，所述印刷电路板上设置有挡墙，所述挡墙包括相互连接挡墙本体和挡墙延伸部，所述挡墙本体环绕于所述LED发光体的四周侧面，所述挡墙延伸部在所述LED发光体的一侧延伸凸起于所述LED发光体的上表面。
  2. 根据权利要求1所述的LED光源，其中，所述LED发光体包括电性连接到所述印刷电路板的LED芯片以及覆设于所述LED芯片上的荧光粉层。
  3. 根据权利要求1所述的LED光源，其中，所述挡墙本体呈方形环状结构，所述挡墙延伸部呈平板状结构。
  4. 根据权利要求1所述的LED光源，其中，所述挡墙本体呈圆形环状结构，所述挡墙延伸部呈平板状结构。
  5. 根据权利要求1所述的LED光源，其中，所述挡墙由弹性材料制备形成。
  6. 一种侧入式背光模组，包括背板以及设置在所述背板上的导光板和LED光源，所述LED光源位于所述导光板的侧面，所述LED光源包括印刷电路板和LED发光体，其中，所述印刷电路板上设置有挡墙，所述挡墙包括相互连接挡墙本体和挡墙延伸部，所述挡墙本体环绕于所述LED发光体的四周侧面，所述挡墙延伸部在所述LED发光体的一侧延伸凸起于所述LED发光体的上表面；所述挡墙延伸部位于所述LED发光体的背离所述背板的一侧。
  7. 根据权利要求6所述的侧入式背光模组，其中，所述LED发光体包括电性连接到所述印刷电路板的LED芯片以及覆设于所述LED芯片上的荧光粉层。
  8. 根据权利要求6所述的侧入式背光模组，其中，所述挡墙本体呈方形环状结构，所述挡墙延伸部呈平板状结构。
  9. 根据权利要求6所述的侧入式背光模组，其中，所述挡墙本体呈圆形环状结构，所述挡墙延伸部呈平板状结构。
  10. 根据权利要求6所述的侧入式背光模组，其中，所述挡墙由弹性材料制备形成。
  11. 根据权利要求6所述的侧入式背光模组，其中，所述挡墙延伸部延伸凸起于所述LED发光体的上表面并抵触连接到所述导光板。
  12. 根据权利要求6所述的侧入式背光模组，其中，所述背板上连接有铝挤，所述LED光源连接到所述铝挤上。
  13. 根据权利要求12所述的侧入式背光模组，其中，所述侧入式背光模组还包括反射片和光学膜片组，所述反射片设置于所述背板上，所述导光板设置于所述反射片上，所述光学膜片组设置于所述导光板上。
  14. 一种液晶显示装置，包括液晶显示面板和侧入式背光模组，所述液晶显示面板和所述侧入式背光模组相对设置，所述侧入式背光模组向所述液晶显示面板提供显示光源，以使所述液晶显示面板显示画面；
    所述侧入式背光模组包括背板以及设置在所述背板上的导光板和LED光源，所述LED光源位于所述导光板的侧面，所述LED光源包括印刷电路板和LED发光体，其中，所述印刷电路板上设置有挡墙，所述挡墙包括相互连接挡墙本体和挡墙延伸部，所述挡墙本体环绕于所述LED发光体的四周侧面，所述挡墙延伸部在所述LED发光体的一侧延伸凸起于所述LED发光体的上表面；所述挡墙延伸部位于所述LED发光体的背离所述背板的一侧。
  15. 根据权利要求14所述的液晶显示装置，其中，所述LED发光体包括电性连接到所述印刷电路板的LED芯片以及覆设于所述LED芯片上的荧光粉层。
  16. 根据权利要求14所述的液晶显示装置，其中，所述挡墙本体呈方形环状结构或圆形环状结构，所述挡墙延伸部呈平板状结构。
  17. 根据权利要求14所述的液晶显示装置，其中，所述挡墙由弹性材料制备形成。
  18. 根据权利要求14所述的液晶显示装置，其中，所述挡墙延伸部延伸凸起于所述LED发光体的上表面并抵触连接到所述导光板。
  19. 根据权利要求14所述的液晶显示装置，其中，所述背板上连接有铝挤，所述LED光源连接到所述铝挤上。
  20. 根据权利要求19所述的液晶显示装置，其中，所述侧入式背光模组还包括反射片和光学膜片组，所述反射片设置于所述背板上，所述导光板设置于 所述反射片上，所述光学膜片组设置于所述导光板上。
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