WO2018223431A1 - 一种背光模组及显示装置 - Google Patents

一种背光模组及显示装置 Download PDF

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Publication number
WO2018223431A1
WO2018223431A1 PCT/CN2017/089706 CN2017089706W WO2018223431A1 WO 2018223431 A1 WO2018223431 A1 WO 2018223431A1 CN 2017089706 W CN2017089706 W CN 2017089706W WO 2018223431 A1 WO2018223431 A1 WO 2018223431A1
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WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
backlight module
peripheral sides
Prior art date
Application number
PCT/CN2017/089706
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English (en)
French (fr)
Inventor
陈倩
刘中杰
Original Assignee
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.)
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US15/556,464 priority Critical patent/US10401551B2/en
Publication of WO2018223431A1 publication Critical patent/WO2018223431A1/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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—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 display technologies, and in particular, to a backlight module and a display device.
  • LCD liquid crystal screens are widely used in displays. Since liquid crystal molecules cannot emit light by themselves, LCD displays generally have backlight modules that provide light sources for liquid crystal molecules.
  • the backlight module includes a light bar and a light guide plate.
  • the light guide plate includes a light incident surface, three peripheral side surfaces, and a light emitting surface.
  • the light strip emits light from the light guide surface to the light guide plate, and the light is emitted from the light emitting surface to the liquid crystal molecules.
  • a plastic frame is generally disposed at a corresponding position on the three peripheral sides, and the plastic frame can block the light emitted from the three peripheral sides. Therefore, the backlight module does not leak light, but in this way, the presence of the plastic frame increases the weight and width of the backlight module.
  • the invention mainly provides a backlight module and a display device, aiming at solving the problem that the backlight module is not sufficiently narrow and narrow.
  • a technical solution adopted by the present invention is to provide a backlight module, wherein the backlight module includes a light guide plate, a light bar and a light shielding tape, and the light guide plate includes a light incident surface and three a side of the light-emitting surface of the light strip providing a light source for the light guide plate, the light-shielding tape covering the three peripheral sides to prevent light from entering the light guide plate from the light source
  • the light guide plate further includes a light emitting surface and a bottom surface opposite to the light emitting surface, wherein the light shielding tape comprises an upper edge, a side edge, and a bottom edge.
  • the edge and the bottom edge are respectively attached to the edge of the light-emitting surface and the bottom surface, and the side edge is attached to the three peripheral sides; the size of the light guide plate on the side of the light-incident surface is larger than The size of the light guide plate on one side of the peripheral side opposite to the light incident surface.
  • another technical solution adopted by the present invention is to provide a backlight module, wherein the backlight module includes a light guide plate, a light bar and a light shielding tape, and the light guide plate includes a light incident surface and three Providing a light source for the light guide plate on a side of the light-emitting surface, the light-shielding tape covering the three peripheral sides to prevent the light source from being incident on the light guide plate Shot from the three peripheral sides.
  • another technical solution adopted by the present invention is to provide a display device, wherein the display device includes a display module and a backlight module that are oppositely disposed, and the backlight module includes a light guide plate and a light And a light-shielding tape, the light-guiding plate includes a light-incident surface and three peripheral side surfaces, wherein the light strip is located at a side of the light-incident surface to provide a light source for the light guide plate, and the light-shielding tape covers the three The peripheral side surface emits light from the three peripheral sides to prevent light from entering the light guide plate.
  • the invention has the beneficial effects that the present invention prevents the incident from the light incident surface by covering the light incident surface of the light guide plate and the three peripheral sides of the three light guide surfaces with the light shielding tape.
  • the light of the light guide plate is emitted from the three peripheral sides, so that the plastic frame provided in the prior art to prevent leakage of the three peripheral sides is omitted in the case where the three peripheral sides are not leaking, thereby reducing the backlight module.
  • the weight reduces the width of the backlight module, realizes the lightening of the backlight module, and reduces the production cost.
  • FIG. 1 is a schematic structural view of a first embodiment of a backlight module provided by the present invention
  • FIG. 2 is a schematic structural view showing the side of the light guide plate of FIG. 1 bonded to the side of the light shielding tape;
  • FIG. 3 is a schematic structural view of a second embodiment of a backlight module provided by the present invention.
  • FIG. 4 is a schematic structural view of a first embodiment of a display device provided by the present invention.
  • FIG. 5 is a schematic structural view of a second embodiment of a display device according to the present invention.
  • the first embodiment of the backlight module 10 provided by the present invention includes a light guide plate 11, a light bar 12 and a light shielding tape 13.
  • the light guide plate 11 includes a light incident surface 111 and three peripheral side surfaces 112, and further includes a light exit surface 113 and a bottom surface 114 disposed opposite to the light exit surface 113.
  • the three peripheral side surfaces 112 have a zigzag shape, and the size of the light guide plate 11 on the side of the light incident surface 111 is larger than the size of the light guide plate 11 on the side of one peripheral side surface 112 opposite to the light incident surface 111, that is, as shown in FIG.
  • the height of the left side of the light guide plate 11 is larger than the height of the right side of the light guide plate 11.
  • the light bar 12 is located on a side of the light incident surface 111 of the light guide plate 11 to provide a light source for the light guide plate 11.
  • the light bar 12 includes an LED 121 and an FPC 122 that supplies power to the LED 121.
  • the light-shielding tape 13 covers the three peripheral side faces 112 of the light guide plate 11 to prevent light incident from the light source provided by the light bar 12 from entering the light guide plate 11 from being emitted from the three peripheral side faces 112.
  • the light-shielding tape 13 includes an upper edge 131, a side edge 132 and a bottom edge 133.
  • the upper edge 131 is attached to the edge of the light-emitting surface 113 of the light guide plate 11, and the side edge 132 is attached to the three peripheral sides 112.
  • the bottom edge 133 is attached to the edge of the bottom surface 114 such that the light shielding tape 13 covers the light guide plate 11 and completely covers the three peripheral side surfaces 112, so that the light incident on the light guide plate 11 is directed toward the three peripheral side surfaces 112. It is blocked by the light-shielding tape 13 and does not emit.
  • the side rim 132 is bonded to the zigzag three peripheral sides 112 by glue 134, and the three peripheral sides 112 of the zigzag shape can increase the contact area with the glue 134, that is, the bonding area with the glue 134 is increased. Further, the adhesion sufficiency of the three peripheral side faces 112 and the side gussets 132 of the light-shielding tape 13 is increased.
  • the light shielding tape 13 in this embodiment is a black opaque tape
  • the glue 134 is a black glue
  • a reflective sheet 14 is further disposed on a side of the bottom surface 114 of the light guide plate 11
  • a plastic frame 15 is further disposed on a side of the light strip 12 away from the light guide plate 11 .
  • the reflection sheet 14 is configured to reflect the light emitted from the bottom surface 114 to the light guide plate 11 when the light incident on the light guide plate 11 is emitted from the bottom surface 114 to improve the light source utilization rate; the plastic frame 15 serves as a support.
  • the light guide plate 21 in the second embodiment of the present invention is the same as the light guide plate 11 in the first embodiment, and is not described here.
  • the light-shielding tape 23 in this embodiment includes a sticker. Side 231, side rim 232 and bottom rim 233.
  • An optical film group 26 is further disposed between the upper edge 231 and the light-emitting surface 213 of the light guide plate 21, and the upper edge 231 is attached to the edge of the side of the optical film group 26 away from the light-emitting surface 213, and the side edge 232
  • Three peripheral side surfaces 212 of the optical film group 26 corresponding to the three peripheral side surfaces 212 of the light guide plate 21 are attached to the three peripheral side surfaces 261 of the light guide plate 21 so that the upper edge 231 and the side edge 232 are co-coated.
  • a first embodiment of a display device provided by the present invention includes a display module 30 and a backlight module 10 in the first embodiment disposed opposite to the display module 30 .
  • the backlight module 10 includes a light guide plate 11 , a light bar 12 , and a light shielding tape 13 .
  • the light guide plate 11 includes a light incident surface 111 and three peripheral side surfaces 112, and further includes a light exit surface 113 and a bottom surface 114 disposed opposite to the light exit surface 113.
  • the three peripheral side surfaces 112 have a zigzag shape, and the size of the light guide plate 11 on the side of the light incident surface 111 is larger than the size of the light guide plate 11 on the side of one peripheral side surface 112 opposite to the light incident surface 111, that is, as shown in FIG.
  • the height of the left side of the light guide plate 11 is larger than the height of the right side of the light guide plate 11.
  • the light bar 12 is located on a side of the light incident surface 111 of the light guide plate 11 to provide a light source for the light guide plate 11.
  • the light bar 12 includes an LED 121 and an FPC 122 that supplies power to the LED 121.
  • the light-shielding tape 13 covers the three peripheral side faces 112 of the light guide plate 11 to prevent light incident from the light source provided by the light bar 12 from entering the light guide plate 11 from being emitted from the three peripheral side faces 112.
  • the light-shielding tape 13 includes an upper edge 131, a side edge 132 and a bottom edge 133.
  • the upper edge 131 is attached to the edge of the light-emitting surface 113 of the light guide plate 11, and the side edge 132 is attached to the three peripheral sides 112.
  • the bottom edge 133 is attached to the edge of the bottom surface 114 such that the light shielding tape 13 covers the light guide plate 11 and completely covers the three peripheral side surfaces 112, so that the light incident on the light guide plate 11 is directed toward the three peripheral side surfaces 112. It is blocked by the light-shielding tape 13 and does not emit.
  • the side rim 132 is bonded to the zigzag three peripheral sides 112 by glue 134, and the three peripheral sides 112 of the zigzag shape can increase the contact area with the glue 134, that is, the bonding area with the glue 134 is increased. Further, the adhesion sufficiency of the three peripheral side faces 112 and the side gussets 132 of the light-shielding tape 13 is increased.
  • the light shielding tape 13 in this embodiment is a black opaque tape
  • the glue 134 is a black glue
  • a reflective sheet 14 is further disposed on a side of the bottom surface 114 of the light guide plate 11
  • a plastic frame 15 is further disposed on a side of the light strip 12 away from the light guide plate 11 .
  • the reflection sheet 14 is configured to reflect the light emitted from the bottom surface 114 to the light guide plate 11 when the light incident on the light guide plate 11 is emitted from the bottom surface 114 to improve the light source utilization rate; the plastic frame 15 serves as a support.
  • a second embodiment of the display device provided by the present invention includes a display module 40 and a backlight module 20 in the second embodiment disposed opposite to the display module 40.
  • the light guide plate 21 of the backlight module 20 is the same as the light guide plate 11 of the first embodiment, and is not described here.
  • the light shielding tape 23 of the embodiment includes an upper edge 231, a side edge 232, and a bottom sticker. Side 233.
  • An optical film group 26 is further disposed between the upper edge 231 and the light-emitting surface 213 of the light guide plate 21, and the upper edge 231 is attached to the edge of the side of the optical film group 26 away from the light-emitting surface 213, and the side edge 232
  • Three peripheral side surfaces 212 of the optical film group 26 corresponding to the three peripheral side surfaces 212 of the light guide plate 21 are attached to the three peripheral side surfaces 261 of the light guide plate 21 so that the upper edge 231 and the side edge 232 are co-coated.
  • the present invention prevents the light incident from the light incident surface to the light guide plate from the three peripheral sides by covering the light incident surface of the light guide plate and the three peripheral sides of the three peripheral side surfaces with the light shielding tape.
  • the injection makes the plastic frame provided in the prior art to prevent leakage of the three peripheral sides, thereby reducing the weight of the backlight module and reducing the width of the backlight module. The lightening of the backlight module is realized, and the production cost is reduced.

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

Abstract

一种背光模组(10)及显示装置，背光模组(10)包括导光板(11)、灯条(12)及遮光胶带(13)，导光板(11)包括入光面(111)及三个周边侧面(112)，灯条(12)位于入光面(111)的一侧为导光板(11)提供光源，遮光胶带(13)包覆三个周边侧面(112)以防止光源入射至导光板(11)的光线从三个周边侧面(112)射出。通过背光模组(10)，使得在三个周边侧面(112)不漏光的情况下，省去了现有技术中为防止三个周边侧面(112)漏光而设置的胶框，减轻背光模组(10)的重量，减少背光模组(10)的宽度，实现了背光模组(10)的轻窄化，降低了生产成本。

Description

一种背光模组及显示装置
【技术领域】
本发明涉及显示技术领域，特别是涉及一种背光模组及显示装置。
【背景技术】
LCD液晶屏被广泛应用于显示器中，由于液晶分子自身无法发光，因此，LCD显示器中一般都具有为液晶分子提供光源的背光模组。
一般的，背光模组包括灯条及导光板，导光板包括入光面、三个周边侧面以及出光面，灯条从入光面的一侧向导光板发射光线，光线从出光面射向液晶分子以为液晶分子提供光源，现有技术中，为了防止光线从导光板的三个周边侧面射出，一般采用在三个周边侧面相应的位置设置胶框，胶框能够遮挡从三个周边侧面射出的光线而使得背光模组不会漏光，但这种方法，胶框的存在会增加背光模组的重量以及宽度。
【发明内容】
本发明主要是提供一种背光模组及显示装置，旨在解决背光模组不够轻窄化的问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组，其中，所述背光模组包括导光板、灯条及遮光胶带，所述导光板包括入光面及三个周边侧面，所述灯条位于所述入光面的一侧为所述导光板提供光源，所述遮光胶带包覆所述三个周边侧面以防止所述光源入射至所述导光板的光线从所述三个周边侧面射出；其中，所述导光板还包括出光面及与所述出光面相对设置的底面，所述遮光胶带包括上贴边、侧贴边及底贴边，所述上贴边与所述底贴边分别贴附于所述出光面及所述底面的边缘，所述侧贴边贴附于所述三个周边侧面；所述入光面一侧的导光板的尺寸大于与所述入光面相对的一个周边侧面一侧的导光板的尺寸。
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，其中，所述背光模组包括导光板、灯条及遮光胶带，所述导光板包括入光面及三个周边侧面，所述灯条位于所述入光面的一侧为所述导光板提供光源，所述遮光胶带包覆所述三个周边侧面以防止所述光源入射至所述导光板的光线从所述三个周边侧面射出。
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，其中，所述显示装置包括相对设置的显示模组及背光模组，所述背光模组包括导光板、灯条及遮光胶带，所述导光板包括入光面及三个周边侧面，所述灯条位于所述入光面的一侧为所述导光板提供光源，所述遮光胶带包覆所述三个周边侧面以防止所述光源入射至所述导光板的光线从所述三个周边侧面射出。
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入光面及三个周边侧面中的三个周边侧面包覆遮光胶带的方法，防止从入光面入射至导光板的光线从三个周边侧面射出，使得在三个周边侧面不漏光的情况下，省去了现有技术中为防止三个周边侧面漏光而设置的胶框，进而减轻了背光模组的重量，减少了背光模组的宽度，实现了背光模组的轻窄化，降低了生产成本。
【附图说明】
图1是本发明提供的背光模组第一实施例的结构示意图；
图2是图1中导光板与遮光胶带的侧贴边粘合的结构示意图；
图3是本发明提供的背光模组第二实施例的结构示意图；
图4是本发明提供的显示装置第一实施例的结构示意图；
图5是本发明提供的显示装置第二实施例的结构示意图；
【具体实施方式】
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明所提供的一种背光模组及显示装置做进一步详细描述。
共同参阅图1及图2，本发明提供的背光模组10第一实施例包括导光板11、灯条12及遮光胶带13。
导光板11包括入光面111以及三个周边侧面112，还包括出光面113及与出光面113相对设置的底面114。
其中，三个周边侧面112呈锯齿形，入光面111一侧的导光板11的尺寸大于入光面111相对的一个周边侧面112一侧的导光板11的尺寸，即如图1所示的导光板11左侧的高度大于导光板11右侧的高度。
灯条12位于导光板11的入光面111的一侧为导光板11提供光源。
其中，灯条12包括LED121以及为LED121供电的FPC122。
遮光胶带13包覆导光板11的三个周边侧面112以防止灯条12提供的光源入射至导光板11的光线从三个周边侧面112射出。
其中，遮光胶带13包括上贴边131、侧贴边132及底贴边133，上贴边131贴附于导光板11的出光面113的边缘，侧贴边132贴附于三个周边侧面112，底贴边133贴附于底面114的边缘，以使得遮光胶带13包覆导光板11且完全遮住三个周边侧面112，进而使得入射至导光板11的光线射向三个周边侧面112时，被遮光胶带13所遮挡而不会射出。
进一步地，侧贴边132通过胶水134与锯齿形的三个周边侧面112粘合，锯齿形的三个周边侧面112能够增加与胶水134的接触面积，也即增加了与胶水134的粘合面积，进而增加了三个周边侧面112与遮光胶带13的侧贴边132的粘合充分度。
可选的，本实施例中的遮光胶带13为黑色不透明胶带，胶水134为黑色胶水。
进一步参阅图1，本实施例中导光板11的底面114的一侧还设有反射片14，灯条12远离导光板11的一侧还设有胶框15。
其中，反射片14用于将入射至导光板11的光线从底面114射出时，将从底面114射出的光线反射至导光板11，以提高光源利用率；胶框15起支撑作用。
参阅图3，本发明提供的背光模组20第二实施例中导光板21与上述第一实施例中的导光板11相同，在此不再赘述，本实施例中的遮光胶带23包括上贴边231、侧贴边232及底贴边233。
其中，上贴边231与导光板21的出光面213之间还设有光学膜片组26，上贴边231贴附于光学膜片组26远离出光面213的一面的边缘，侧贴边232贴附于导光板21的三个周边侧面212以及与导光板21三个周边侧面212相应的光学膜片组26的三个周边侧面261，以使得上贴边231与侧贴边232共同包覆光学膜片组26以及导光板21的三个周边侧面212。
本实施例中的其他结构与上述第一实施例中相同，在此不再赘述。
共同参阅图1、图2及图4，本发明提供的显示装置第一实施例包括显示模组30以及与显示模组30相对设置的上述第一实施例中的背光模组10。
其中，背光模组10包括导光板11、灯条12及遮光胶带13。
导光板11包括入光面111以及三个周边侧面112，还包括出光面113及与出光面113相对设置的底面114。
其中，三个周边侧面112呈锯齿形，入光面111一侧的导光板11的尺寸大于与入光面111相对的一个周边侧面112一侧的导光板11的尺寸，即如图1所示的导光板11左侧的高度大于导光板11右侧的高度。
灯条12位于导光板11的入光面111的一侧为导光板11提供光源。
其中，灯条12包括LED121以及为LED121供电的FPC122。
遮光胶带13包覆导光板11的三个周边侧面112以防止灯条12提供的光源入射至导光板11的光线从三个周边侧面112射出。
其中，遮光胶带13包括上贴边131、侧贴边132及底贴边133，上贴边131贴附于导光板11的出光面113的边缘，侧贴边132贴附于三个周边侧面112，底贴边133贴附于底面114的边缘，以使得遮光胶带13包覆导光板11且完全遮住三个周边侧面112，进而使得入射至导光板11的光线射向三个周边侧面112时，被遮光胶带13所遮挡而不会射出。
进一步地，侧贴边132通过胶水134与锯齿形的三个周边侧面112粘合，锯齿形的三个周边侧面112能够增加与胶水134的接触面积，也即增加了与胶水134的粘合面积，进而增加了三个周边侧面112与遮光胶带13的侧贴边132的粘合充分度。
可选的，本实施例中的遮光胶带13为黑色不透明胶带，胶水134为黑色胶水。
进一步参阅图1，本实施例中导光板11的底面114的一侧还设有反射片14，灯条12远离导光板11的一侧还设有胶框15。
其中，反射片14用于将入射至导光板11的光线从底面114射出时，将从底面114射出的光线反射至导光板11，以提高光源利用率；胶框15起支撑作用。
共同参阅图3及图5，本发明提供的显示装置第二实施例包括显示模组40以及与显示模组40相对设置的上述第二实施例中的背光模组20。
其中，背光模组20中导光板21与上述第一实施例中的导光板11相同，在此不再赘述，本实施例中的遮光胶带23包括上贴边231、侧贴边232及底贴边233。
其中，上贴边231与导光板21的出光面213之间还设有光学膜片组26，上贴边231贴附于光学膜片组26远离出光面213的一面的边缘，侧贴边232贴附于导光板21的三个周边侧面212以及与导光板21三个周边侧面212相应的光学膜片组26的三个周边侧面261，以使得上贴边231与侧贴边232共同包覆光学膜片组26以及导光板21的三个周边侧面212。
本实施例中的其他结构与上述的显示装置第一实施例相同，在此不再赘述。
区别于现有技术，本发明通过在导光板的入光面及三个周边侧面中的三个周边侧面包覆遮光胶带的方法，防止从入光面入射至导光板的光线从三个周边侧面射出，使得在三个周边侧面不漏光的情况下，省去了现有技术中为防止三个周边侧面漏光而设置的胶框，进而减轻了背光模组的重量，减少了背光模组的宽度，实现了背光模组的轻窄化，降低了生产成本。
以上所述仅为本发明的实施例，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 (14)

  1. 一种背光模组，其中，所述背光模组包括导光板、灯条及遮光胶带，所述导光板包括入光面及三个周边侧面，所述灯条位于所述入光面的一侧为所述导光板提供光源，所述遮光胶带包覆所述三个周边侧面以防止所述光源入射至所述导光板的光线从所述三个周边侧面射出；
    其中，所述导光板还包括出光面及与所述出光面相对设置的底面，所述遮光胶带包括上贴边、侧贴边及底贴边，所述上贴边与所述底贴边分别贴附于所述出光面及所述底面的边缘，所述侧贴边贴附于所述三个周边侧面；
    所述入光面一侧的导光板的尺寸大于与所述入光面相对的一个周边侧面一侧的导光板的尺寸。
  2. 根据权利要求1所述的背光模组，其中，所述三个周边侧面呈锯齿形，所述侧贴边通过胶水与锯齿形的所述三个周边侧面粘合。
  3. 根据权利要求1所述的背光模组，其中，所述上贴边与所述出光面之间还设置有光学膜片组，所述上贴边与所述侧贴边共同包覆所述光学膜片组及所述三个周边侧面。
  4. 根据权利要求1所述的背光模组，其中，所述底面的一侧设有反射片，所述反射片用于将从所述底面射出的所述光线反射至所述导光板。
  5. 一种背光模组，其中，所述背光模组包括导光板、灯条及遮光胶带，所述导光板包括入光面及三个周边侧面，所述灯条位于所述入光面的一侧为所述导光板提供光源，所述遮光胶带包覆所述三个周边侧面以防止所述光源入射至所述导光板的光线从所述三个周边侧面射出。
  6. 根据权利要求5所述的背光模组，其中，所述导光板还包括出光面及与所述出光面相对设置的底面，所述遮光胶带包括上贴边、侧贴边及底贴边，所述上贴边与所述底贴边分别贴附于所述出光面及所述底面的边缘，所述侧贴边贴附于所述三个周边侧面。
  7. 根据权利要求6所述的背光模组，其中，所述三个周边侧面呈锯齿形，所述侧贴边通过胶水与锯齿形的所述三个周边侧面粘合。
  8. 根据权利要求6所述的背光模组，其中，所述上贴边与所述出光面之间还设置有光学膜片组，所述上贴边与所述侧贴边共同包覆所述光学膜片组及所述三个周边侧面。
  9. 根据权利要求6所述的背光模组，其中，所述底面的一侧设有反射片，所述反射片用于将从所述底面射出的所述光线反射至所述导光板。
  10. 一种显示装置，其中，所述显示装置包括相对设置的显示模组及背光模组，所述背光模组包括导光板、灯条及遮光胶带，所述导光板包括入光面及三个周边侧面，所述灯条位于所述入光面的一侧为所述导光板提供光源，所述遮光胶带包覆所述三个周边侧面以防止所述光源入射至所述导光板的光线从所述三个周边侧面射出。
  11. 根据权利要求10所述的显示装置，其中，所述导光板还包括出光面及与所述出光面相对设置的底面，所述遮光胶带包括上贴边、侧贴边及底贴边，所述上贴边与所述底贴边分别贴附于所述出光面及所述底面的边缘，所述侧贴边贴附于所述三个周边侧面。
  12. 根据权利要求11所述的显示装置，其中，所述三个周边侧面呈锯齿形，所述侧贴边通过胶水与锯齿形的所述三个周边侧面粘合。
  13. 根据权利要求11所述的显示装置，其中，所述上贴边与所述出光面之间还设置有光学膜片组，所述上贴边与所述侧贴边共同包覆所述光学膜片组及所述三个周边侧面。
  14. 根据权利要求11所述的显示装置，其中，所述底面的一侧设有反射片，所述反射片用于将从所述底面射出的所述光线反射至所述导光板。
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