WO2017193625A1 - 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
WO2017193625A1
WO2017193625A1 PCT/CN2017/071141 CN2017071141W WO2017193625A1 WO 2017193625 A1 WO2017193625 A1 WO 2017193625A1 CN 2017071141 W CN2017071141 W CN 2017071141W WO 2017193625 A1 WO2017193625 A1 WO 2017193625A1
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WO
WIPO (PCT)
Prior art keywords
light
backlight module
guide plate
light source
light guide
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/071141
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English (en)
French (fr)
Inventor
郑辉
张明辉
孙含嫣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US15/541,969 priority Critical patent/US10317727B2/en
Publication of WO2017193625A1 publication Critical patent/WO2017193625A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • 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
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • 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
    • G02F1/35—Non-linear optics
    • G02F1/3501—Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
    • G02F1/3505—Coatings; Housings; Supports

Definitions

  • Embodiments of the present disclosure relate to the field of display technologies, and in particular, to a backlight module and a display device.
  • FIG. 1 schematically shows a schematic structural view of a conventional backlight module. As shown in FIG.
  • the light source 101 is disposed on the side surface 103 of the light guide plate 102, and light emitted from the light source 101 is incident on the light guide plate 102 from the side surface 103 of the light guide plate 102 and is emitted from the light exit surface of the light guide plate 102. Since the light source 101 generally has a certain illumination angle, for example, some LED (Light Emitting Diode) light sources can have an illumination angle of up to 120° or more, only the light of the intermediate portion can be incident into the light guide plate 102, and the light of the edge region cannot be incident on the light guide plate. 102, thus causing waste of light energy.
  • LED Light Emitting Diode
  • the embodiments described herein provide a backlight module and a display device that can effectively utilize light energy and reduce light waste.
  • a backlight module includes a light source and a light guide plate, the light source is disposed on at least one side of the light guide plate, and a side of the light guide plate opposite to the light source includes a light source opposite to the light source Light receiving surface and light reflection table located above the light receiving surface The angle formed by the light receiving surface and the light reflecting surface in a direction toward the inside of the light guide plate is an obtuse angle.
  • the light receiving surface forms an angle with the light reflecting surface that is greater than 150° and less than 180°.
  • the thickness of the light guide plate is greater than the thickness of the light source in a direction perpendicular to the surface of the light guide plate, and the light source is in the same plane as the lower surface of the light guide plate.
  • a side portion of the light guide plate opposite to the light source is a light receiving surface, and a side portion higher than the light source is a light reflecting surface.
  • the light reflecting surface comprises a reflective coating.
  • the backlight module further includes a reflective element disposed below the light guide plate, the reflective element extending below the light source.
  • the backlight module further includes one or more optical films disposed above the light guide plate, the optical film extending above the light source.
  • the backlight module further includes a backing plate disposed under the light guide plate and the light source.
  • the light reflecting surface is planar, concave or convex; and/or the light receiving surface is planar, concave or convex.
  • a display device in another embodiment, includes a backlight module provided by any of the embodiments herein and a display panel disposed above the backlight module.
  • a light reflecting surface is disposed above the light receiving surface of the light guide plate, which is capable of reflecting at least a portion of the light that cannot be incident inside the light guide plate to the region where the light source is located.
  • the upper part is utilized by the display panel located above the area where the light source is located.
  • the light that cannot be injected into the interior of the light guide plate can be effectively utilized to improve the utilization of light energy; on the other hand, the dark area of the display above the area where the light source is located can be reduced. To achieve a narrow border or even a borderless display.
  • FIG. 1 is a schematic structural view of a conventional backlight module
  • FIG. 2 is a schematic structural diagram of an exemplary backlight module according to an embodiment of the present disclosure
  • Figure 3 is a schematic view showing the light path of the light reflecting surface reflecting light above the area where the light source is located;
  • FIG. 4 is a block diagram showing an exemplary display device provided by an embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a backlight module including a light source and a light guide plate.
  • the light source is disposed on at least one side of the light guide plate, and a side of the light guide plate opposite to the light source includes a light receiving surface opposite to the light source and the light receiving surface.
  • the upper light reflecting surface, the angle formed by the light receiving surface and the light reflecting surface in the direction toward the inside of the light guide plate is an obtuse angle.
  • the backlight module in the embodiment when the backlight module in the embodiment is applied to the display device, at least a portion of the light not incident on the light guide plate may be reflected to an area of the display panel above the light source to be utilized by the display panel. Therefore, it is possible to reduce the loss of light energy and improve the utilization of light energy.
  • FIG. 2 is a schematic structural diagram of an exemplary backlight module according to an embodiment of the present disclosure.
  • a backlight module 100 includes a light source 101 and a light guide plate 102.
  • the light source 101 is disposed at one side of the light guide plate 102, and a side of the light guide plate 102 opposite to the light source 101 includes a light receiving surface 1031 and a light reflecting surface. 1032, wherein the light receiving surface 1031 is disposed opposite to the light source 101, and the light reflecting surface 1032 is located above the light receiving surface 1031.
  • the light receiving surface 1031 can couple the light incident thereon to the inside of the light guide plate 102, and the light reflecting surface 1032 can at least partially reflect the light incident thereon to the area above the light source. It is utilized by a display panel located above the area where the light source is located.
  • the light reflecting surface and the light receiving surface may be configured to form an included angle (ie, an obtuse angle) of greater than 90° and less than 180°.
  • the angle between the light receiving surface 1301 and the light reflecting surface 1032 is greater than 150° and less than 180°.
  • the thickness of the light guide plate may be set to be larger than the thickness of the light source in a direction perpendicular to the surface of the light guide plate, and the light source and the lower surface of the light guide plate are in the same plane.
  • a side portion of the light guide plate opposite to the light source is a light receiving surface, and a side portion higher than the light source is a light reflecting surface.
  • the light incident on the light reflecting surface 1032 can be reflected above the area where the light source 101 is located, so that the display panel located in the area can display an image, so that the backlight module of this configuration can make full use of the non-injection to the guide.
  • the light inside the light board can improve the utilization of light energy.
  • the backlight module of this configuration can reflect light that cannot be incident on the light guide plate to the display panel located above the light source, thereby also reducing the display dark area and increasing the area of the effective display area.
  • Figure 3 shows a schematic diagram of the light path of the light reflecting surface reflecting light above the area where the light source is located.
  • the light at the periphery of the center beam that is, the light that cannot enter the inside of the light guide plate
  • the light reflecting surface 1032 of the light guide plate 102 is incident on the light reflecting surface 1032 of the light guide plate 102, is reflected by the light reflecting surface 1032, and is incident on the upper side of the region where the light source is located, so that It is utilized by a display panel located above the light source.
  • the display device made of such a backlight module has a wider frame.
  • the light reflecting surface and the light receiving surface are schematically illustrated in FIGS. 2 and 3, it is understood that at least one of the light reflecting surface and the light receiving surface may also be Set to a curved surface, such as a convex or concave surface.
  • the angle between the light reflecting surface and the light receiving surface can be understood as the angle between the cut surfaces between them.
  • the light reflecting surface 1032 can be formed by coating a reflective coating on a side portion of the light guide plate that is higher than the light source (the region where the light reflecting surface is located).
  • the light reflecting surface is formed by coating the reflective coating layer, and the process is simple and convenient to manufacture.
  • the light reflecting surface may also be formed in other ways, for example, by attaching a mirror to a side portion of the light guide plate that is higher than the light source.
  • the light source can be one or more of a light emitting diode, a cathode fluorescent tube, an electroluminescent sheet, and an organic electroluminescent sheet.
  • the backlight module 100 may further include a reflective element 105 disposed under the light guide plate 102 , the reflective element 105 extending below the light source 101 .
  • the light that is incident on the reflective element 105 can be reflected onto the display panel above the backlight module, which also reduces the loss of light energy.
  • the backlight module 100 may further include one or more optical films 104 disposed above the light guide plate 102, and the optical film 104 may extend above the light source.
  • the optical film 104 can include a brightness enhancement sheet, a diffusion sheet, and the like.
  • the brightness enhancement sheet can be formed from a plurality of parallel arranged microprism structures and a substrate for increasing brightness over a particular viewing angle range of the backlight module.
  • the diffusion sheet generally contains methyl methacrylate microparticles as diffusion particles for diffusing light.
  • the backlight module 100 may further include a back plate 107 disposed under the light guide plate 102 and the light source 101 , and the back plate may serve to fix and support the light guide plate 102 and the light source 101 .
  • the backlight module 100 may further include a plastic frame 106 for fixing the light source 101, the light guide plate 102, the optical film 104, and the like.
  • FIG. 4 is a block diagram showing an exemplary display device provided by an embodiment of the present disclosure.
  • a display device includes the backlight module 100 provided by any one of the above embodiments, and the display panel 400 located above the backlight module 100 .
  • the display panel may be any type of display panel that requires backlight module illumination and has a display function, such as a liquid crystal display panel.
  • the display device provided by the embodiment of the present disclosure can be applied to any product having a display function, such as a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device may further include, for example, a bezel 106 for enclosing the light source 101, the light guide plate 102, the optical film 104, and the like, and a light shielding frame 401 for preventing leakage of light to the outside of the display area, for example. .
  • an element or layer when an element or layer is referred to as being “on” another element or layer, it may be directly on the other element or layer, or an element or layer may be present; likewise, when the element or layer is When the other element or layer is "under”, it may be directly under the other element or layer, or there may be at least one intermediate element or layer; when the element or layer is referred to as being between the two or two layers It may be a single element or layer between two or two layers, or more than one intermediate element or layer may be present.

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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

一种背光模组（100）及显示装置，该背光模组（100）包括光源（101）和导光板（102），光源（101）设置在导光板（102）的至少一个侧面，导光板（102）的与光源（101）相对的侧面包括与光源（101）相对的光接收表面（1031）和位于光接收表面（1031）的上方的光反射表面（1032），光接收表面（1031）与光反射表面（1032）形成的在朝向导光板（102）内部方向上的夹角为钝角。该背光模组（100）和显示装置可以减少光浪费，提高光能利用率。

Description

一种背光模组及显示装置
相关申请的交叉引用
本申请要求于2016年05月10日递交的中国专利申请第201620415683.1号的优先权和权益，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及显示技术领域，尤其涉及一种背光模组及显示装置。
背景技术
对于液晶显示装置来说，由于液晶本身不发光，因此需要在液晶显示面板的入光侧设置发光光源，例如背光模组，才能实现液晶显示装置的显示功能。背光模组的作用在于为显示面板提供亮度高且显示均匀的面光源，以使显示面板能够正常显示影像。图1示意性示出一种常规的背光模组的结构示意图。如图1所示，光源101设置在导光板102的侧面103，光源101发出的光从导光板102的侧面103射入导光板102并从导光板102的出光面射出。由于光源101通常具有一定的发光角度，例如有些LED(发光二极管)光源的发光角度可高达120°以上，只有中间区域的光能够入射到导光板102中，而边缘区域的光不能射入导光板102，因而造成光能的浪费。
公开内容
本文中描述的实施例提供了一种背光模组及显示装置，能够有效利用光能，减少光浪费。
在一个实施例中，一种背光模组，包括光源和导光板，所述光源设置在所述导光板的至少一个侧面，所述导光板的与所述光源相对的侧面包括与所述光源相对的光接收表面和位于所述光接收表面的上方的光反射表 面，所述光接收表面与所述光反射表面形成的在朝向所述导光板内部方向上的夹角为钝角。
在一个示例中，所述光接收表面与所述光反射表面形成的夹角大于150°并且小于180°。
在一个示例中，在垂直于所述导光板表面的方向上，所述导光板的厚度大于所述光源的厚度，并且光源与导光板的下表面位于同一平面。
在一个示例中，所述导光板与所述光源相对的侧面部分为光接收表面，并且高于所述光源的侧面部分为光反射表面。
在一个示例中，所述光反射表面包括反射涂层。
在一个示例中，所述背光模组还包括设置在所述导光板的下方的反射元件，所述反射元件延伸到所述光源的下方。
在一个示例中，所述背光模组还包括设置在所述导光板上方的一个或多个光学膜片，所述光学膜片延伸至所述光源的上方。
在一个示例中，所述背光模组还包括设置在所述导光板和所述光源下方的背板。
在一个示例中，所述光反射表面为平面、凹面或凸面；和/或所述光接收表面为平面、凹面或凸面。
在另一个实施例中，一种显示装置包括本文中任意实施例提供的背光模组和位于所述背光模组之上的显示面板。
在上述配置的背光模组和使用该背光模组的显示装置中，在导光板的光接收表面上方设置光反射表面，其能够将不能入射到导光板内部的至少一部分光反射到光源所在区域的上方，以被位于光源所在区域上方的显示面板所利用，一方面可以有效利用不能射入导光板内部的光，提高光能利用率；另一方面，可以减小光源所在区域上方的显示暗区，从而实现窄边框甚至是无边框显示。
适应性的进一步的方面和范围从本文中提供的描述变得明显。应当理解，本申请的各个方面可以单独或者与一个或多个其他方面组合实施。还应当理解，本文中的描述和特定实施例旨在仅说明的目的并不旨在限制本 申请的范围。
附图说明
本文中描述的附图用于仅对所选择的实施例的说明的目的，并不是所有可能的实施方式，并且不旨在限制本申请的范围，其中：
图1示出一种常规的背光模组的结构示意图；
图2示出本公开的实施例提供的示例性的背光模组的结构示意图；
图3示出光反射表面将光反射到光源所在区域的上方的光路示意图；
图4示出本公开的实施例提供的示例性显示装置的结构示意图。
贯穿这些附图的各个视图，相应的参考编号指示相应的部件或特征。
具体实施方式
现将参照附图更全面地描述示例性的实施例。
本公开的实施例提供一种背光模组，包括光源和导光板，光源设置在导光板的至少一个侧面，导光板的与光源相对的侧面包括与光源相对的光接收表面和位于光接收表面的上方的光反射表面，光接收表面与光反射表面形成的在朝向导光板内部方向上的夹角为钝角。
在该实施例中，当将该实施例中的背光模组应用到显示装置时，可以将至少一部分没有入射到导光板的光反射至显示面板的位于光源上方的区域，以被显示面板所利用，因此可以减少光能损失，提高光能利用率。
图2示出本公开的实施例提供的示例性的背光模组的结构示意图。
如图2所示，一种背光模组100包括光源101和导光板102，光源101设置在导光板102的一侧，并且导光板102的与光源101相对的侧面包括光接收表面1031和光反射表面1032，其中光接收表面1031与光源101相对设置，并且光反射表面1032位于光接收表面1031的上方。在该实施例中，光接收表面1031可以将入射到其上的光耦合到导光板102的内部，并且光反射表面1032可以将入射到其上的光至少部分地反射至光源所在区域的上方，以被位于光源所在区域上方的显示面板利用。
为了使光反射表面能够将入射到其上的光至少部分地反射至光源所在区域的上方，可以将光反射表面和光接收表面配置为形成大于90°且小于180°的夹角(即钝角)。可选地，光接收表面1301与光反射表面1032的夹角大于150°并且小于180°。
在操作中，在与导光板表面垂直的方向上，可以将导光板的厚度设置为大于光源的厚度，并且光源与导光板的下表面位于同一平面。在这种情况下，导光板的与光源相对的侧面部分为光接收表面，并且高于光源的侧面部分为光反射表面。
根据这种配置，可以使入射到光反射表面1032的光反射到光源101所在区域的上方，使得位于此区域的显示面板能够显示图像，因此这种配置的背光模组能够充分利用不能入射到导光板内部的光，从而能够提高光能利用率。此外，这种配置的背光模组能够将不能入射到导光板的光反射至位于光源的上方的显示面板上，因此也可以减小显示暗区，增加有效显示区域的面积。
图3示出光反射表面将光反射到光源所在区域的上方的光路示意图。如图3所示，中心光束外围的光(即不能入射到导光板内部的光)入射到导光板102的光反射表面1032，被光反射表面1032反射后入射至光源所在区域的上方，因此可以被位于光源上方的显示面板利用。如上所述，通过如此配置，一方面可以有效利用不能射入导光板内部的光，提高光能利用率；另一方面，可以将不能射入导光板内部的光反射到光源所在区域上方的显示面板，使得光能够照亮光源所在区域的上方，因此能够减小显示暗区(图3中虚线A-A的外侧区域)，从而可以实现窄边框甚至是无边框显示。相反，如图1所示，在常规结构的背光模组中，由于由光源发射的光不能到达光源所在区域的上方的显示面板，导致光源所在区域上方为显示暗区(图1中虚线A’-A’的外侧区域)，采用这种背光模组制作的显示装置，具有较宽的边框。
需要说明的是，虽然图2和图3中示意性示出光反射表面和光接收表面为平面，但是可以理解，光反射表面和光接收表面中的至少一个也可以 设置为弯曲的表面，例如凸面或凹面。当光反射表面和光接收表面为弯曲的表面时，光反射表面和光接收表面之间的夹角可以理解为它们之间的切面的夹角。
在一个实施例中，可以通过在导光板的高于光源的侧面部分(光反射表面所在的区域)涂覆反射涂层来形成光反射表面1032。在这种配置中，通过涂覆反射涂层的方式形成光反射表面，工艺简单，制作方便。可以理解，还可以采用其他方式形成光反射表面，例如，在导光板的高出光源的侧面部分粘贴反射镜。
在本文描述的实施例中，光源可以为发光二极管、阴极荧光管、电致发光片和有机电致发光片中的一种或多种。
在示例性的实施例中，如图2和图3所示，背光模组100还可以包括设置在导光板102下方的反射元件105，该反射元件105延伸到光源101的下方。通过这种配置，可以将射向反射元件105的光反射到位于背光模组上方的显示面板上，同样可以减少光能损失。
进一步如图2和图3所示，背光模组100还可以包括设置在导光板102上方的一个或多个光学膜片104，该光学膜片104可以延伸至光源的上方。在本文描述的实施例中，光学膜片104可以包括增光片、扩散片等。在一个示例中，增光片可以由若干个平行排列的微棱镜结构以及基底形成，用于提高背光模组特定视角范围内的亮度。扩散片内一般含有甲基丙烯酸甲酯微粒，该甲基丙烯酸甲酯微粒作为扩散粒子用于使光发生扩散。
进一步如图2和图3所示，背光模组100还可以包括设置在导光板102和光源101下方的背板107，该背板例如可以起到固定并支撑导光板102和光源101的作用。
在可选的实施例中，如图2和图3所示，背光模组100还可以包括例如用于将光源101、导光板102、光学膜片104等封框固定的胶框106。
图4示出本公开的实施例提供的示例性显示装置的结构示意图。
如图4所示，一种显示装置，包括上述实施例中的任一种实施例提供的背光模组100，以及位于背光模组100之上的显示面板400。
在本实施例中，显示面板可以是需要背光模组照明且具有显示功能的任意类型的显示面板，如液晶显示面板。
本公开实施例提供的显示装置可以应用于任何具有显示功能的产品，例如，手机、平板电脑、电视机、笔记本电脑、数码相框或导航仪等。
在一个具体的实施例中，显示装置还可以包括例如用于将光源101、导光板102、光学膜片104等封框的胶框106以及例如用于防止光泄露到显示区域外的遮光框架401。
需要说明的是，由于本实施例提供的显示面板采用上述任一实施例中的背光模组，因此在上述实施例中对背光模组的结构、功能和效果的描述同样适于本实施例。
需要说明的是，在本公开的描述中，术语“上”、“之上”、“下”、“之下”、“顶”、“底”、“之间”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，当元件或层被称为在另一元件或层“上”时，它可以直接在该另一元件或层上，或者可以存在中间的元件或层；同样，当元件或层被称为在另一元件或层“下”时，它可以直接在该另一元件或层下，或者可以存在至少一个中间的元件或层；当元件或层被称为在两元件或两层“之间”时，其可以为该两元件或两层之间的唯一的元件或层，或者可以存在一个以上的中间元件或层。
除非上下文中另外明确地指出，否则在本文和所附权利要求中所使用的词语的单数形式包括复数，反之亦然。因而，当提及单数时，通常包括相应术语的复数。相似地，措辞“包含”和“包括”将解释为包含在内而不是独占性地。同样地，术语“包括”和“或”应当解释为包括在内的，除非本文中明确禁止这样的解释。在本文中使用术语“实例”之处，特别是当其位于一组术语之后时，所述“实例”仅仅是示例性的和阐述性的，且不应当被认为是独占性的或广泛性的。
以上为了说明和描述的目的提供了实施例的前述描述。其并不旨在是 穷举的或者限制本申请。特定实施例的各个元件或特征通常不限于特定的实施例，但是，在合适的情况下，这些元件和特征是可互换的并且可用在所选择的实施例中，即使没有具体示出或描述。同样也可以以许多方式来改变。这种改变不能被认为脱离了本申请，并且所有这些修改都包含在本申请的范围内。

Claims (10)

  1. 一种背光模组，包括光源和导光板，所述光源设置在所述导光板的至少一个侧面，其中，所述导光板的与所述光源相对的侧面包括与所述光源相对的光接收表面和位于所述光接收表面上方的光反射表面，
    所述光接收表面与所述光反射表面形成的在朝向所述导光板内部方向上的夹角为钝角。
  2. 根据权利要求1所述的背光模组，其中，所述光接收表面与所述光反射表面形成的夹角大于150°并且小于180°。
  3. 根据权利要求1或2所述的背光模组，其中，在垂直于所述导光板表面的方向上，所述导光板的厚度大于所述光源的厚度，并且所述光源与所述导光板的下表面位于同一平面。
  4. 根据权利要求3所述的背光模组，其中，所述导光板与所述光源相对的侧面部分为光接收表面，并且高于所述光源的侧面部分为光反射表面。
  5. 根据权利要求1或2所述的背光模组，其中，所述光反射表面包括反射涂层。
  6. 根据权利要求1或2所述的背光模组，其中，所述背光模组还包括设置在所述导光板的下方的反射元件，所述反射元件延伸到所述光源的下方。
  7. 根据权利要求1或2所述的背光模组，其中，所述背光模组还包括设置在所述导光板上方的一个或多个光学膜片，所述光学膜片延伸至所述光源的上方。
  8. 根据权利要求1或2所述的背光模组，其中，所述背光模组还包括设置在所述导光板和所述光源下方的背板。
  9. 根据权利要求1或2所述的背光模组，其中，所述光反射表面为平面、凹面或凸面；和/或所述光接收表面为平面、凹面或凸面。
  10. 一种显示装置，包括权利要求1至9中任一项所述的背光模组和位于所述背光模组之上的显示面板。
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