WO2016138679A1 - 导光板、背光模组及显示装置 - Google Patents

导光板、背光模组及显示装置 Download PDF

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Publication number
WO2016138679A1
WO2016138679A1 PCT/CN2015/074687 CN2015074687W WO2016138679A1 WO 2016138679 A1 WO2016138679 A1 WO 2016138679A1 CN 2015074687 W CN2015074687 W CN 2015074687W WO 2016138679 A1 WO2016138679 A1 WO 2016138679A1
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WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
mounting hole
circuit board
flexible circuit
Prior art date
Application number
PCT/CN2015/074687
Other languages
English (en)
French (fr)
Inventor
郭伟
曾杰
刘中杰
Original Assignee
深圳市华星光电技术有限公司
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司, 武汉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 US14/646,019 priority Critical patent/US9857517B2/en
Publication of WO2016138679A1 publication Critical patent/WO2016138679A1/zh

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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
    • G02B6/0081—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
    • G02B6/0013—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
    • G02B6/0013—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
    • 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
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • 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
    • G02B6/0028—Light guide, e.g. taper
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a light guide plate, a backlight module, and a display device.
  • the backlight module is used to supply a sufficient light source with uniform brightness and distribution.
  • the display device can display the image normally.
  • the light guide plate (LGP) is a component of the backlight module.
  • the light guide plate uses an optical grade acrylic/PC plate to print out a light spot on the light guide plate by dot printing, injection molding or hot pressing to destroy light in the light guide plate. Total reflection occurs inside, and the light is emitted through the light exit surface.
  • the light guide plate can be uniformly illuminated by various light guiding points of different sizes and sizes.
  • the existing backlight module includes the following components: a plastic frame 1, a light guide plate 2 (LGP), an LED 3, and a flexible circuit board 4 (FPC).
  • the pads on LED3 and FPC4 are soldered together and can be seen as a whole.
  • a plurality of support columns 11 are generally disposed on the plastic frame.
  • the LEDs 3 and the plastic frame 1 are combined, the LEDs 3 are placed between the adjacent two support columns 11, usually with a double layer placed in the middle. The face is glued to secure the two parts.
  • some of the light guide plates 2 are usually provided with a slope portion to reduce the thickness of the planar main plate portion, and the FPC 4 is placed on the upper side of the LGP 2 to facilitate optical path coupling.
  • the LGP2 is usually glued to the double-sided tape on the FPC4 to ensure that the light-in side is coupled to the LED 3.
  • the processing of such a protruding columnar structure is more difficult, and it is also difficult to ensure the stability of the component combination.
  • the LGP is provided with a slope, the bonding portion between the FPC and the LGP is equivalent to a line, and the stability is poor, and the two will rotate relative to each other, resulting in failure of the optical path coupling.
  • the invention provides a light guide plate, a backlight module and a display device, so as to solve the problems of high processing difficulty and poor stability existing in the prior art.
  • one technical solution adopted by the present invention is to provide a light guide plate.
  • a platform portion for mounting a flexible circuit board having a uniform thickness is disposed at an edge of the light guide plate, and the platform portion is provided with a mounting hole for mounting the LED.
  • the side of the mounting hole near the edge of the light guide plate is an outer side of the mounting hole, and the side opposite to the outer side is an inner side of the mounting hole.
  • the light guide plate includes a blocking portion that is upwardly convex with respect to the platform portion, and the blocking portion is disposed outside the mounting hole.
  • the light guide plate further includes a slope portion and a planar main plate portion which are sequentially connected, the slope portion is located inside the mounting hole, and the thickness of the platform portion is greater than a thickness of the planar main plate portion.
  • the blocking portion is provided with a wiring opening for placing a protruding portion of the flexible circuit board.
  • the side of the light guide plate is covered with a sealing layer.
  • sealing layer is a silk screen layer.
  • the backlight module comprises an LED, a flexible circuit board and a light guide plate.
  • the edge of the light guide plate is provided with a platform portion for mounting a flexible circuit board with a uniform thickness, and the platform portion is provided with a mounting hole for mounting the LED.
  • the LED is mounted in the mounting hole, and the flexible circuit board is mounted above the mounting hole.
  • the side of the mounting hole near the edge of the light guide plate is an outer side of the mounting hole, and the side opposite to the outer side is an inner side of the mounting hole;
  • the light guide plate includes a platform opposite to the platform a blocking portion that protrudes upward, and the blocking portion is disposed outside the mounting hole.
  • the light guide plate further includes a slope portion and a plane main plate portion, the platform portion has a thickness greater than a thickness of the planar main plate portion, the slope portion is located inside the mounting hole, and is connected to the platform portion and Between the planar main board portions.
  • the blocking portion is provided with a wiring opening for placing a protruding portion of the flexible circuit board.
  • the side of the light guide plate is covered with a sealing layer.
  • sealing layer is a silk screen layer.
  • the flexible circuit board is glued on the plane of the mounting hole by double-sided tape.
  • the LED and the PAD on the flexible circuit board are soldered together by soldering.
  • the display device includes a display panel and a backlight module.
  • the backlight module includes an LED, a flexible circuit board, and a light guide plate.
  • the edge of the light guide plate is provided with a platform portion for mounting a flexible circuit board with a uniform thickness, and the platform portion is provided with an LED for mounting a hole, the LED is mounted in the mounting hole, and the flexible circuit board is mounted on the platform portion.
  • the side of the mounting hole near the edge of the light guide plate is an outer side of the mounting hole, and the side opposite to the outer side is an inner side of the mounting hole;
  • the light guide plate includes a platform opposite to the platform a blocking portion that protrudes upward, and the blocking portion is disposed outside the mounting hole.
  • the light guide plate further includes a slope portion and a plane main plate portion, the platform portion has a thickness greater than a thickness of the planar main plate portion, the slope portion is located inside the mounting hole, and is connected to the platform portion and Between the planar main board portions.
  • the blocking portion is provided with a wiring opening for placing a protruding portion of the flexible circuit board.
  • the side of the light guide plate is covered with a sealing layer.
  • sealing layer is a silk screen layer.
  • the invention has the beneficial effects that the invention is different from the prior art.
  • the invention provides a mounting hole on the light guide plate, so that the installation and fixing of the LED does not need to pass through the plastic frame, so there is no need to provide a support column on the plastic frame, only
  • the installation hole can be formed on the light guide plate, which reduces the processing difficulty and is beneficial to reduce the cost.
  • the overall quality of the light guide plate is good, the overall size is large, and the stiffness is good, which is advantageous for enhancing the structural strength, thereby improving the stability of the entire structure.
  • a platform portion is disposed at an edge of the light guide plate, and a mounting hole is disposed on the platform portion, and the flexible circuit board can be mounted and fixed on the platform portion, so that contact between the flexible circuit board and the light guide plate is made by line contact.
  • the relative rotation between the two will not occur, so that the stability between the flexible circuit board and the light guide plate is enhanced, so that the positioning of the flexible circuit board can be better realized, and the probability of occurrence of coupling failure can be greatly reduced.
  • FIG. 1 is a schematic view showing a cross section of a conventional backlight module from a mounting hole in the background art
  • FIG. 2 is a schematic view showing a cross section of a conventional backlight module from a support column in the background art
  • FIG. 3 is a schematic view showing the overall structure of an embodiment of a light guide plate of the present invention.
  • Figure 4 is a schematic structural view of the edge of the light guide plate of Figure 3;
  • Figure 5 is a cross-sectional structural view of the light guide plate of Figure 3.
  • FIG. 6 is a schematic structural view of an embodiment of a backlight module of the present invention.
  • Figure 7 is a schematic structural view of the back surface of Figure 6;
  • FIG. 8 is a schematic cross-sectional view of the backlight module of FIG. 6.
  • FIG. 8 is a schematic cross-sectional view of the backlight module of FIG. 6.
  • 100 light guide plate; 101, platform portion; 102, mounting hole; 103, flexible circuit board; 104, blocking portion; 105, LED; 106, wiring opening; 107, slope portion; 108, planar main board portion.
  • FIG. 3 is a schematic view showing the overall structure of an embodiment of the light guide plate of the present invention.
  • 4 is a schematic structural view of the edge of the light guide plate of FIG. 3.
  • FIG. 5 is a schematic cross-sectional view of the light guide plate of FIG. 3.
  • the present invention provides a light guide plate 100 having a platform portion 101 for mounting a flexible circuit board having a uniform thickness at the edge of the light guide plate 100.
  • the platform portion 101 is provided with a mounting hole 102 for mounting an LED.
  • the present invention provides a mounting hole 102 on the light guide plate 100, so that the mounting and fixing of the LED does not need to pass through the plastic frame, so that it is not necessary to provide a support column on the plastic frame, and only the mounting hole 102 needs to be formed on the light guide plate 100. Reduce the processing difficulty and help reduce costs. Moreover, since the overall quality of the light guide plate 100 is good, the overall size is large, and the stiffness is good, which is advantageous for enhancing the structural strength, thereby improving the stability of the entire structure.
  • a platform portion 101 is disposed at an edge of the light guide plate 100, and the mounting hole 102 is disposed on the platform portion 101.
  • the flexible circuit board can be mounted and fixed on the platform portion 101, so that the flexible circuit board and the light guide plate 100 can be The contact between the two is changed from the line contact to the surface contact, and the relative rotation between the two is not performed, so that the stability of the connection between the flexible circuit board and the light guide plate 100 is enhanced, so that the positioning of the flexible circuit board can be better realized. And can greatly reduce the probability of coupling failure.
  • the light guide plate 100 is further provided with a blocking portion 104.
  • one side of the mounting hole 102 near the edge of the light guide plate 100 is the outer side of the mounting hole 102, and the side opposite to the outer side is the inner side of the mounting hole 102.
  • the light guide plate 100 includes a blocking portion 104 that is upwardly convex with respect to the platform portion 101, and the blocking portion 104 is provided outside the mounting hole 102.
  • the function of the blocking portion 104 is mainly to fix the flexible circuit board from the side, so that the installation of the flexible circuit board is more stable.
  • a wiring opening 106 for placing a protruding portion of the flexible wiring board is further provided on the blocking portion 104 to facilitate wiring.
  • the light guide plate 100 of the present embodiment further includes a slope portion 107 and a planar main plate portion 108.
  • one side of the mounting hole 102 near the edge of the light guide plate 100 is the outer side of the mounting hole 102, and the side opposite to the outer side is the inner side of the mounting hole 102.
  • the slope portion 107 is located inside the mounting hole 102, and the thickness of the land portion 101 is greater than the thickness of the planar main plate portion 108.
  • the platform portion 101 is disposed only at one end of the LED, and the platform portion 101 and the planar main plate portion 108 are connected by the slope portion 107.
  • the design is mainly for reducing the thickness of the light guide plate 100, thereby reducing the entire light guide plate 100. The thickness, in turn, reduces the volume of the product.
  • the light guide plate 100 may also be a planar light guide plate or a light guide plate whose upper surface is a sloped surface.
  • a sealing layer which may be a silk screen layer, such as a white silk screen layer or a black silk screen layer, for reflection or shading.
  • the arrangement of the sealing layer is suitable for the light guide plate 100 in any of the above embodiments.
  • FIG. 6 is a schematic structural view of the edge of the backlight module embodiment of the present invention.
  • Fig. 7 is a schematic structural view of the back surface of Fig. 6.
  • FIG. 8 is a schematic cross-sectional view of the backlight module of FIG. 6.
  • the present invention also provides a backlight module including an LED 105, a flexible circuit board 103, and a light guide plate 100.
  • a platform portion 101 for mounting the flexible wiring board 103 having a uniform thickness is provided at the edge of the light guide plate 100, and the mounting portion 102 for mounting the LED 105 is provided on the platform portion 101.
  • One side of the mounting hole 102 near the edge of the light guide plate 100 is the outer side of the mounting hole 102, and the side opposite to the outer side is the inner side of the mounting hole 102.
  • the LED 105 is fixed in the mounting hole 102 of the light guide plate 100, which can make the backlight module more stable.
  • the LEDs 105 and the PAD on the flexible wiring board 103 are soldered together by soldering.
  • the flexible wiring board 103 is adhered to the platform portion 101 by double-sided tape. Since the bonding portion of the flexible wiring board 103 and the land portion 101 is one surface, the connection between the two is more stable.
  • the light guide plate 100 of the present invention may be a light guide plate 100 of various shapes, such as a planar light guide plate 100, and the upper surface is a beveled light guide plate 100 or the like.
  • the inner side of the mounting hole 102 is sequentially provided with a slope portion 107 and a planar main plate portion 108, and the thickness of the planar main plate portion 108 is smaller than the thickness of the platform portion 101.
  • the planar main plate portion 108 and the platform portion 101 are connected together by a slope portion 107.
  • a blocking portion 104 is further provided on the outer side of the mounting hole 102, and the blocking portion 104 is upwardly convex with respect to the platform portion 101. Its main function is to fix the flexible circuit board 103 from the side, so that the structure of the backlight module is more stable.
  • the present invention further provides a display device including a display panel and the above backlight module.

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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)
  • Planar Illumination Modules (AREA)

Abstract

一种导光板（100）、背光模组及显示装置。导光板（100）的边缘处设有厚度均匀、用于安装柔性线路板的平台部（101），平台部（101）上设有用于安装LED（105）的安装孔（102）。背光模组包括LED（105）、柔性电路板（103）以及导光板（100），LED（105）安装在安装孔（102）内，柔性电路板（103）安装在平台部（101）上。显示装置包括显示面板和背光模组。该装置能使柔性电路板（103）和导光板（100）间的连接稳定性加强，从而降低发生耦合失效的几率，还能提高整体结构的稳定性，同时降低了加工难度及减低加工成本。

Description

导光板、背光模组及显示装置
【技术领域】
本发明涉及显示技术领域，特别是涉及一种导光板、背光模组及显示装置。
【背景技术】
显示装置中，背光模组用于供应充足的亮度与分布均匀的光源， 使得显示装置能正常显示影像。导光板（LGP）是背光模组中的一个部件，导光板是利用光学级的亚克力/PC板材，通过网点印刷、注塑或者热压，在导光板上加工出出光点，以破坏光线在导光板内部发生的全反射，通过出光面出射出光线。通过各种疏密、大小不一的导光点，可使导光板均匀发光。
现有的背光模组中，包括以下部件：胶框1、导光板2（LGP）、LED3及柔性线路板4（FPC）。一般的，LED3和FPC4上的pad通过焊锡焊接在一起，可看做一个整体。请参阅图1和图2，一般会在胶框上设置多个支撑柱11，当LED3和胶框1组合时，LED3放置在相邻两个支撑柱11之间，通常在中间放置一层双面胶，使两个部件粘合固定。此外，有的导光板2通常会设有斜坡部分以减小平面主板部分的厚度，FPC4置于LGP2上侧以便于光路耦合。LGP2通常粘在FPC4上的双面胶上来确保入光侧与LED3耦合。
随着胶框越做越窄，这种突出的柱状结构加工难度增加，并且还难以保证部件组合的稳定性。此外，由于LGP上设有斜坡，FPC与LGP之间的粘合部位相当于一条线，稳定性差，两者会发生相对转动，导致光路耦合失效。
【发明内容】
本发明提供了一种导光板、背光模组及显示装置，以解决现有技术存在的加工难度大且稳定性差的问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种导光板。该导光板的边缘处设有厚度均匀的、用于安装柔性线路板的平台部，所述平台部上设有用于安装LED的安装孔。
其中，所述安装孔靠近所述导光板的边缘的一侧为所述安装孔的外侧，与所述外侧相对的一侧为所述安装孔的内侧。所述导光板包括相对于所述平台部向上凸起的阻挡部，所述阻挡部设在所述安装孔的外侧。
其中，所述导光板还包括依次连接的斜坡部和平面主板部，所述斜坡部位于所述安装孔的内侧，所述平台部的厚度大于所述平面主板部的厚度。
其中，所述阻挡部设有用于放置柔性线路板伸出部分的布线开口。
其中，所述导光板的侧面覆盖有封闭层。
其中，所述封闭层是丝印层。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种背光模组。该背光模组包括LED、柔性线路板以及导光板，该导光板的边缘处设有厚度均匀的、用于安装柔性线路板的平台部，所述平台部上设有用于安装LED的安装孔。所述LED安装在所述安装孔内，所述柔性线路板安装在所述安装孔上方。
其中，所述安装孔靠近所述导光板的边缘的一侧为所述安装孔的外侧，与所述外侧相对的一侧为所述安装孔的内侧；所述导光板包括相对于所述平台部向上凸起的阻挡部，所述阻挡部设在所述安装孔的外侧。
其中，所述导光板还包括斜坡部和平面主板部，所述平台部的厚度大于所述平面主板部的厚度，所述斜坡部位于所述安装孔的内侧，并连接在所述平台部和所述平面主板部之间。
其中，所述阻挡部设有用于放置柔性线路板伸出部分的布线开口。
其中，所述导光板的侧面覆盖有封闭层。
其中，所述封闭层是丝印层。
其中，所述柔性线路板通过双面胶粘在所述安装孔所在的平面上。
其中，所述LED和所述柔性线路板上的PAD通过焊锡焊接在一起。
为解决上述技术问题，本发明采用的又一个技术方案是：提供一种显示装置。该显示装置包括显示面板和背光模组。所述背光模组包括LED、柔性线路板以及导光板，所述导光板的边缘处设有厚度均匀的、用于安装柔性线路板的平台部，所述平台部上设有用于安装LED的安装孔，所述LED安装在所述安装孔内，所述柔性线路板安装在所述平台部上。
其中，所述安装孔靠近所述导光板的边缘的一侧为所述安装孔的外侧，与所述外侧相对的一侧为所述安装孔的内侧；所述导光板包括相对于所述平台部向上凸起的阻挡部，所述阻挡部设在所述安装孔的外侧。
其中，所述导光板还包括斜坡部和平面主板部，所述平台部的厚度大于所述平面主板部的厚度，所述斜坡部位于所述安装孔的内侧，并连接在所述平台部和所述平面主板部之间。
其中，所述阻挡部设有用于放置柔性线路板伸出部分的布线开口。
其中，所述导光板的侧面覆盖有封闭层。
其中，所述封闭层是丝印层。
本发明的有益效果是：区别于现有技术的情况，本发明通过在导光板的上设置安装孔，使得LED的安装固定无需再通过胶框，因而无需在胶框上设置支撑柱，只需要在导光板上加工形成安装孔即可，降低了加工难度，有利于降低成本。并且，由于导光板的整体性好，整体尺寸大，挺性好，有利于增强结构强度，因而能提高整个结构的稳定性。另外，在该导光板的边缘处设置平台部，并将安装孔设置在平台部上，柔性线路板可以安装固定在该平台部上，能使柔性线路板与导光板之间的接触由线接触转为面接触，两者就不会发生相对转动，使柔性线路板和导光板之间的稳定性得以加强，因而能更好地实现柔性线路板的定位，并能大大降低发生耦合失效的几率。
【附图说明】
图1是背景技术中现有的背光模组从安装孔处截面的示意图；
图2是背景技术中现有的背光模组从支撑柱处截面的示意图；
图3是本发明导光板实施例的整体结构示意图；
图4是图3的导光板的边缘处的结构示意图；
图5是图3的导光板的截面结构示意图；
图6是本发明背光模组实施例的结构示意图；
图7是图6的背面的结构示意图；
图8是图6的背光模组的截面结构示意图。
其中，100、导光板；101、平台部；102、安装孔；103、柔性线路板；104、阻挡部；105、LED；106、布线开口；107、斜坡部；108、平面主板部。
【具体实施方式】
下面结合附图和具体实施方式对本发明进行详细说明。
请参阅图3、图4和图5，其中，图3是本发明导光板实施例的整体结构示意图。图4是图3的导光板的边缘处的结构示意图。图5是图3的导光板的截面结构示意图。
本发明提供一种导光板100，该导光板100的边缘处设有厚度均匀的、用于安装柔性线路板的平台部101，平台部101上设有用于安装LED的安装孔102。
本发明通过在导光板100的上设置安装孔102，使得LED的安装固定无需再通过胶框，因而无需在胶框上设置支撑柱，只需要在导光板100上加工形成安装孔102即可，降低了加工难度，有利于降低成本。并且，由于导光板100的整体性好，整体尺寸大，挺性好，有利于增强结构强度，因而能提高整个结构的稳定性。另外，在该导光板100的边缘处设置平台部101，并将安装孔102设置在平台部101上，柔性线路板可以安装固定在该平台部101上，能使柔性线路板与导光板100之间的接触由线接触转为面接触，两者就不会发生相对转动，使柔性线路板和导光板100之间的连接的稳定性得以加强，因而能更好地实现柔性线路板的定位，并能大大降低发生耦合失效的几率。
另一个实施例中，导光板100还设置有阻挡部104。具体地，安装孔102靠近导光板100的边缘的一侧为安装孔102的外侧，与外侧相对的一侧为安装孔102的内侧。导光板100包括相对于平台部101向上凸起的阻挡部104，阻挡部104设在安装孔102的外侧。阻挡部104的作用主要是从侧面固定柔性线路板，使该柔性线路板的安装更加稳定。阻挡部104上还设有用于放置柔性线路板伸出部分的布线开口106，从而方便布线。
本实施例与上述实施例的区别在于，本实施例的导光板100还包括斜坡部107和平面主板部108。
具体地，安装孔102靠近导光板100的边缘的一侧为安装孔102的外侧，与外侧相对的一侧为安装孔102的内侧。斜坡部107位于安装孔102的内侧，平台部101的厚度大于平面主板部108的厚度。平台部101仅设置在设有LED的一端，平台部101与平面主板部108之间通过斜坡部107进行连接，这样设计主要是为了减小导光板100的厚度，从而减小整个导光板100的厚度，进而能减小产品的体积。当然，该导光板100还可以是平面导光板，也可以是上表面为斜面的导光板。
此外，导光板100的侧面以及其它不需要出光的面覆盖有封闭层，该封闭层可以是丝印层，例如白色丝印层或者黑色丝印层，用于反光或者遮光。该封闭层的设置适用于上述任意一个实施例中的导光板100。
请参阅图6、图7和图8，其中，图6是本发明背光模组实施例的边缘处的结构示意图。图7是图6的背面的结构示意图。图8是图6的背光模组的截面结构示意图。
本发明还提供了一种背光模组，该背光模组包括LED105、柔性线路板103以及导光板100。
导光板100的边缘处设有厚度均匀的、用于安装柔性线路板103的平台部101，平台部101上设有用于安装LED105的安装孔102。安装孔102靠近导光板100的边缘的一侧为安装孔102的外侧，与外侧相对的一侧为安装孔102的内侧。LED105固定在导光板100上的安装孔102里，能使得背光模组更加稳定。LED105和柔性线路板103上的PAD通过焊锡焊接在一起。柔性线路板103通过双面胶粘在平台部101上。由于柔性线路板103与平台部101的粘合部位是一个面，因而两者之间的连接更加稳定。
本发明的导光板100可以是多种形状的导光板100，例如平面的导光板100，上表面是斜面的导光板100等。在本实施例中，安装孔102的内侧依次设有斜坡部107和平面主板部108，平面主板部108的厚度小于平台部101的厚度。平面主板部108与平台部101通过斜坡部107连接在一起。在安装孔102的外侧还设有阻挡部104，阻挡部104相对于平台部101向上凸起。其主要作用是从侧面固定柔性线路板103，使该背光模组的结构更加稳定。
本发明进一步提供了一种显示装置，该显示装置包括显示面板和上述背光模组。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种导光板，其中，所述导光板的边缘处设有厚度均匀的、用于安装柔性线路板的平台部，所述平台部上设有用于安装LED的安装孔。
  2. 根据权利要求1所述的导光板，其中，所述安装孔靠近所述导光板的边缘的一侧为所述安装孔的外侧，与所述外侧相对的一侧为所述安装孔的内侧；
    所述导光板包括相对于所述平台部向上凸起的阻挡部，所述阻挡部设在所述安装孔的外侧。
  3. 根据权利要求2所述的导光板，其中，所述导光板还包括斜坡部和平面主板部，所述平台部的厚度大于所述平面主板部的厚度，所述斜坡部位于所述安装孔的内侧，并连接在所述平台部和所述平面主板部之间。
  4. 根据权利要求2所述的导光板，其中，所述阻挡部设有用于放置柔性线路板伸出部分的布线开口。
  5. 根据权利要求1所述的导光板，其中，所述导光板的侧面覆盖有封闭层。
  6. 根据权利要求5所述的导光板，其中，所述封闭层是丝印层。
  7. 一种背光模组，其中，包括LED、柔性线路板以及导光板，所述导光板的边缘处设有厚度均匀的、用于安装柔性线路板的平台部，所述平台部上设有用于安装LED的安装孔，所述LED安装在所述安装孔内，所述柔性线路板安装在所述平台部上。
  8. 根据权利要求7所述的背光模组，其中，所述安装孔靠近所述导光板的边缘的一侧为所述安装孔的外侧，与所述外侧相对的一侧为所述安装孔的内侧；
    所述导光板包括相对于所述平台部向上凸起的阻挡部，所述阻挡部设在所述安装孔的外侧。
  9. 根据权利要求8所述的背光模组，其中，所述导光板还包括斜坡部和平面主板部，所述平台部的厚度大于所述平面主板部的厚度，所述斜坡部位于所述安装孔的内侧，并连接在所述平台部和所述平面主板部之间。
  10. 根据权利要求8所述的背光模组，其中，所述阻挡部设有用于放置柔性线路板伸出部分的布线开口。
  11. 根据权利要求7所述的背光模组，其中，所述导光板的侧面覆盖有封闭层。
  12. 根据权利要求11所述的背光模组，其中，所述封闭层是丝印层。
  13. 根据权利要求7所述的背光模组，其中，所述柔性线路板通过双面胶粘在所述平台部上。
  14. 根据权利要求7所述的背光模组，其中，所述LED和所述柔性线路板上的PAD通过焊锡焊接在一起。
  15. 一种显示装置，其中，包括显示面板和背光模组；所述背光模组包括LED、柔性线路板以及导光板，所述导光板的边缘处设有厚度均匀的、用于安装柔性线路板的平台部，所述平台部上设有用于安装LED的安装孔，所述LED安装在所述安装孔内，所述柔性线路板安装在所述平台部上。
  16. 根据权利要求15所述的显示装置，其中，所述安装孔靠近所述导光板的边缘的一侧为所述安装孔的外侧，与所述外侧相对的一侧为所述安装孔的内侧；
    所述导光板包括相对于所述平台部向上凸起的阻挡部，所述阻挡部设在所述安装孔的外侧。
  17. 根据权利要求16所述的显示装置，其中，所述导光板还包括斜坡部和平面主板部，所述平台部的厚度大于所述平面主板部的厚度，所述斜坡部位于所述安装孔的内侧，并连接在所述平台部和所述平面主板部之间。
  18. 根据权利要求16所述的显示装置，其中，所述阻挡部设有用于放置柔性线路板伸出部分的布线开口。
  19. 根据权利要求15所述的显示装置，其中，所述导光板的侧面覆盖有封闭层。
  20. 根据权利要求19所述的显示装置，其中，所述封闭层是丝印层。
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