WO2017092559A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2017092559A1
WO2017092559A1 PCT/CN2016/105359 CN2016105359W WO2017092559A1 WO 2017092559 A1 WO2017092559 A1 WO 2017092559A1 CN 2016105359 W CN2016105359 W CN 2016105359W WO 2017092559 A1 WO2017092559 A1 WO 2017092559A1
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WO
WIPO (PCT)
Prior art keywords
prism
dot
backlight module
dots
guide plate
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PCT/CN2016/105359
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English (en)
French (fr)
Inventor
马永达
张玉欣
乔勇
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/531,184 priority Critical patent/US20170363796A1/en
Publication of WO2017092559A1 publication Critical patent/WO2017092559A1/zh

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    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of 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
    • G02B6/0033—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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along 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
    • G02B6/0033—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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer

Definitions

  • Embodiments of the present disclosure relate to a backlight module and a display device.
  • the backlight module is a light-emitting structure fixed behind a liquid crystal display (English: Liquid Crystal Display; referred to as: LCD), and is generally composed of a light source, a light guide plate, a reflection sheet, and a prism.
  • the light guide plate is an important component in the backlight module, and can convert a point light source or a line light source into a surface light source suitable for a display device.
  • the light guide plate includes a light-emitting surface, and the light is emitted from the light-emitting surface, and a plurality of mesh points are disposed on the halftone surface of the light guide plate relative to the light-emitting surface, and the light emitted by the light source is diffused and reflected from the mesh point.
  • the surface of the light guide plate can be uniformly illuminated by providing dense and different mesh dots in different regions of the mesh surface of the light guide plate.
  • the dot surface needs to set a plurality of dots through printing, etching, and the like.
  • dots are formed on the dot surface by printing, etching, etc., due to the influence of processing or printing precision, the arrangement pitch of the light guide plate's Internet point can be reduced to a certain distance and can no longer be reduced, resulting in optical vision of the light guide plate. The effect is poor.
  • the light guide plate includes a light emitting surface and a dot surface opposite to the light emitting surface;
  • each set of the first set of mesh points includes a plurality of mesh points, and the first direction and each set of the first set of mesh points
  • the arrangement direction of the dots is vertical;
  • the length direction of the first prism is parallel to the first direction.
  • the plurality of sets of first set of dots arranged along the first direction are moments Array arrangement.
  • the dots of each set of the first set of dots are arranged linearly at equal intervals.
  • the first direction is parallel to any one of the four sides of the light guide plate.
  • the angle between the first direction and any one of the four sides of the light guide plate is greater than 0 degrees and less than 90 degrees.
  • the backlight module further includes: a second prism
  • each set of the second set of second dot dots comprises a plurality of dots arranged in an array, wherein the second direction is associated with each group
  • the arrangement direction of the dots of the second halftone group is vertical, and the second direction intersects the first direction;
  • the length direction of the second prism is parallel to the second direction
  • the light guide plate and the first prism and the second prism are integrally formed.
  • the first prism is a prism film or a prism group composed of a plurality of strip prisms that are parallel to each other.
  • the light guide plate and the first prism are integrally formed.
  • At least one embodiment of the present disclosure provides a display device including: a display panel, and the backlight module of the first aspect.
  • a virtual image of the dot of the dot is formed on the dot surface of the light guide plate, and the center of the virtual image of the dot is It does not overlap with adjacent dots, which improves the visual density of the dots, thereby improving the optical visual effect of the backlight module.
  • FIG. 1 is a schematic diagram of a backlight module in accordance with an embodiment of the present disclosure
  • FIG. 2 is a schematic view of a dot surface of a light guide plate according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a dot virtual image according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic view of a dot surface of a light guide plate according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a backlight module according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a dot surface of a light guide plate according to an embodiment of the present disclosure.
  • the backlight module includes:
  • the light guide plate 10 includes a light-emitting surface 101 and a halftone dot surface 102 disposed opposite to the light-emitting surface; and a first prism 11 disposed on the light-emitting surface 101.
  • the longitudinal direction of the first prism 11 is parallel to the first direction x.
  • FIG. 2 is a schematic diagram of a dot surface of a light guide plate in accordance with an embodiment of the present disclosure.
  • a plurality of first dot groups 12 arranged in a first direction x such as dot groups 121-125, are provided on the halftone dot surface 102 of the light guide plate 10 shown in FIG.
  • One direction x is the same direction as the first direction x in FIG.
  • the plurality of first dot groups 12 arranged in the first direction x may be arranged in a matrix.
  • Each of the first set of dots 12 includes a plurality of linearly arranged dots 120 that are perpendicular to the arrangement direction y of the dots 120 of the first set of dots 12. It can be seen that the longitudinal direction of the first prism 11 in FIG. 1 is parallel to the arrangement direction of the first halftone dot group 12 in FIG. 2: the first direction x.
  • the length direction of the first prism 11 extends along the first direction x and is perpendicular to the arrangement direction y of the dots of each set of dots, the light is diffused and reflected by the dots.
  • the first prism 11 is refracted to form a virtual image of the dot of the dot on the halftone surface of the light guide plate. As shown in FIG. 3, the center of the dot virtual image 1201 formed by the dot 120 is refracted by the prism does not overlap with the adjacent dot.
  • the visual density of the dot dots can be increased.
  • the projection of the first prism on the dot surface needs to cover the dot disposed on the dot surface.
  • At least one embodiment of the present disclosure provides a backlight module, the backlight module includes a light guide plate, and the light guide plate includes a light emitting surface and a dot surface disposed opposite to the light emitting surface, and the backlight module further includes a first prism, the first prism is disposed on a light emitting surface of the light guide plate and extends in a first direction; a plurality of sets of first dot groups arranged along the first direction are disposed on the halftone surface of the light guide plate Each of the first set of network points includes a plurality of dots arranged in a second direction, the first direction being perpendicular to the second direction.
  • a virtual image of the dot of the dot is formed on the dot surface of the light guide plate, and the center of the virtual image of the dot does not overlap with the adjacent dot, thereby improving the visual density of the dot. , thereby improving the optical visual effect of the backlight module.
  • the plurality of sets of first set of dots may be arranged in an array in a first direction, for example, equidistantly arranged in a first direction, and dots in each of the first set of dots Arranged linearly in the second direction, for example, equally spaced along the second direction.
  • the projection of the first prism on the dot surface needs to cover the dot disposed on the dot surface.
  • the minimum spacing of two adjacent two dots in the adjacent two dot groups can be set as the minimum spacing H, the same dot.
  • the spacing between two adjacent dots in the group may be greater than the minimum spacing H, and the virtual image 1201 formed by the light being refracted by the prism is located between two adjacent dots in the same dot group, thereby improving the visual density of the dots in the dot surface, and further Improve the visual effect of the light guide plate.
  • the first direction x of the first dot group 12 array may be parallel to any of the four sides of the light guide plate, and the first prism 11 is The length direction is also parallel to either of the four sides of the light guide plate.
  • the angle ⁇ between the first direction x of the first dot group 12 array and any one of the four sides of the light guide plate may be greater than 0 degrees and less than 90 degrees, and the first prism 11 is The angle between the longitudinal direction and either of the four sides of the light guide plate is also ⁇ to ensure that the longitudinal direction of the first prism 11 is parallel to the first direction x.
  • FIG. 5 is a schematic diagram of a backlight module according to another embodiment of the present disclosure.
  • the backlight module may further include: a second prism 13 , that is, a light-emitting surface 101 of the light guide plate is simultaneously provided with a first A prism 11 and a second prism 13 are not parallel in the longitudinal direction of the first prism 11 and the second prism 13.
  • the setting of the mesh point in the halftone dot surface 102 of the light guide plate may be as shown in FIG.
  • each set of the second set of dots 14 comprising a plurality of linearly arranged dots, the second direction z and each of the groups
  • the arrangement direction w of the dots of the two halftone dot group 14 is vertical, and the second direction z intersects the first direction x.
  • the longitudinal direction of the second prism 13 in FIG. 5 is parallel to the arrangement direction of the second halftone dot group 14 in FIG. 6 : the second direction z.
  • the light guide plate 10 and the first prism 11 and the second prism 12 can be integrally formed in order to ensure the light-emitting effect of the backlight module, because two sets of prisms having different length directions are disposed on the light-emitting surface of the light guide plate.
  • first direction x in FIG. 5 is the same direction as the first direction x in FIG. 6, and the second direction z in FIG. 5 is the same direction as the second direction z in FIG.
  • the projection of the second prism on the dot surface is required. Covers the dots in the second set of dots set on the dot face.
  • the first prism 11 may be a prism film or a prism group composed of a plurality of strip prisms parallel to each other, and the light guide plate 10 and the first prism 11 may also be integrally formed.
  • the light guide plate is integrally formed with the first prism, which not only improves the assembly efficiency of the backlight module, but also reduces the thickness of the backlight module.
  • a backlight module includes a light guide plate including a light emitting surface and a dot surface disposed opposite to the light emitting surface, the backlight module further including a first prism, the first prism is disposed at a light-emitting surface of the light guide plate and a length direction thereof extending in a first direction; a plurality of sets of first network dot groups arranged along the first direction are disposed on the halftone surface of the light guide plate, and each set of the first network dot group includes a plurality of mesh points The first direction is perpendicular to the arrangement direction of the dots of each set of the first set of dots.
  • the projection of the first prism on the dot surface needs to cover the dot disposed on the dot surface.
  • the plurality of sets of first dot groups arranged along the first direction are arranged in a matrix in the first direction, for example, equidistantly arranged.
  • the dots in the first set of dots in each group are arranged linearly, for example, they can be along a straight line or the like. Arranged by distance.
  • the light guide plate When the backlight module provided by the embodiment of the present invention is actually produced and assembled, the light guide plate needs to be processed and formed first, and then a plurality of sets of arrays arranged along the first direction can be arranged on one side of the light guide plate by printing.
  • the dot group (if the dot is set by a non-printing method, such as etching or mechanical characterization, the pre-designed dot can be cast on the mold so that the dot is directly formed on the dot surface when the light guide is formed).
  • the prism can be placed on the light-emitting surface of the light guide plate, and the length direction of the prism is ensured to be parallel to the first direction. If the light guide plate is integrally formed with the prism, the prism is already set when the light guide plate is formed.
  • At least one embodiment of the present disclosure provides a display device including: a display panel, and the backlight module shown in any of FIGS. 1 to 6.

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  • General Physics & Mathematics (AREA)
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Abstract

一种背光模组和显示装置，背光模组包括：导光板(10)，导光板(10)包括出光面(101)和与出光面(101)相对设置的网点面(102)；以及第一棱镜(11)，第一棱镜(11)设置于出光面(101)上且其长度方向沿第一方向(x)延伸；网点面(102)上设置有多组沿第一方向(x)排布的第一网点组(12)，第一网点组(12)中的每一组均包括多个排布的网点，每组第一网点组(12)的网点的排布方向与第一方向(x)垂直，提高了网点的视觉密度，改善了背光模组的光学效果。

Description

背光模组及显示装置 技术领域
本公开的实施例涉及一种背光模组及显示装置。
背景技术
背光模组(Back Light Module)是固定于液晶显示器(英文：Liquid Crystal Display；简称：LCD)背后的一种发光结构，一般由光源、导光板、反射片和棱镜等组成。导光板是背光模组中的重要组件，它能够将点光源或者线光源转换成能为适用于显示装置的面光源。
通常，导光板包括出光面，光线从出光面射出，导光板的相对于出光面的网点面上设置有多个网点，光源发出的光线射到各个网点时会发生漫反射，并从与网点面平行的出光面射出。通过在导光板网点面的不同区域设置疏密、大小不一的网点，可以使导光板的表面均匀发光。网点面需要通过印刷、刻蚀等方法设置多个网点，
网点间距越小，即网点设置的越密集，导光板的光学视觉效果越好。通常情况下，通过印刷、刻蚀等工艺在网点面上形成网点，由于受到加工或印刷精度的影响，导光板上网点的设置间距缩小至一定间距就无法再继续缩小，导致导光板的光学视觉效果较差。
发明内容
本公开的至少一个实施例提供了一种背光模组，包括：
导光板，所述导光板包括出光面和与所述出光面相对的网点面；
第一棱镜，设置在所述出光面上；
其中，所述网点面上设置有多组沿第一方向排布的第一网点组，每组所述第一网点组包括多个网点，所述第一方向与每组所述第一网点组的网点的排布方向垂直；
所述第一棱镜的长度方向平行于所述第一方向。
在本公开的一个实施例中，所述多组沿第一方向排布的第一网点组呈矩 阵排列。
在本公开的一个实施例中，每组所述第一网点组的网点等间隔线性排布。
在本公开的一个实施例中，所述第一方向与所述导光板的四边中的任一边平行。
在本公开的一个实施例中，所述第一方向与所述导光板的四边中的任一边的夹角大于0度小于90度。
在本公开的一个实施例中，所述背光模组还包括：第二棱镜；
所述网点面上还设置有多组沿第二方向阵列排布的第二网点组，每组所述第二网点组包括多个阵列排布的网点，所述第二方向与每组所述第二网点组的网点的排布方向垂直，所述第二方向与所述第一方向相交；
所述第二棱镜的长度方向平行于所述第二方向；
所述导光板与所述第一棱镜和所述第二棱镜为一体成型结构。
在本公开的一个实施例中，所述第一棱镜为棱镜膜或者由多个相互平行的条状棱镜组成的棱镜组。
在本公开的一个实施例中，所述导光板与所述第一棱镜为一体成型结构。
本公开的至少一个实施例提供了一种显示装置，所述显示装置包括：显示面板，以及第一方面所述的背光模组。
在根据本公开的实施例背光模组及显示装置中，光线经过网点漫反射后，再经过第一棱镜折射，会在导光板的网点面上形成该网点的网点虚像，且该网点虚像的中心与相邻的网点不重叠，提高了网点的视觉密度，进而改善了背光模组的光学视觉效果。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1是根据本公开的一个实施例的背光模组的示意图；
图2是根据本公开的一个实施例的导光板网点面的示意图；
图3是根据本公开的一个实施例的网点虚像的示意图；
图4是根据本公开的一个实施例的导光板网点面的示意图；
图5是根据本公开的一个实施例的背光模组的示意图；以及
图6是根据本公开的一个实施例的导光板网点面的示意图。
具体实施方式
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
本公开的至少一个实施例提供了一种背光模组，如图1所示，该背光模组包括：
导光板10，所述导光板包括出光面101和与出光面相对设置的网点面102；以及第一棱镜11，该第一棱镜11设置于出光面101上。在图1所示的背光模组中，该第一棱镜11的长度方向平行于第一方向x。
图2是根据本公开的一个实施例的导光板网点面的示意图。如图2所示，在图1所示的导光板10的网点面102上设置有多个沿第一方向x排布的第一网点组12，例如网点组121-125，图2中的第一方向x与图1中的第一方向x为同一方向。例如，所述多个沿第一方向x排列的第一网点组12可以呈矩阵排列。第一网点组12中的每一组均包括多个线性排布的网点120，该第一方向x与该第一网点组12的网点120的排布方向y垂直。由此可知，图1中的该第一棱镜11的长度方向平行于图2中的该第一网点组12的排布方向：第一方向x。
在根据公开的实施例中，由于该第一棱镜11的长度方向沿该第一方向x延伸，且垂直于每组网点组的网点的排布方向y，因此光线经过网点漫反射后，再经过第一棱镜11折射，会在导光板的网点面上形成该网点的网点虚像，如图3所示，网点120经棱镜折射后形成的网点虚像1201的中心与相邻的网点均不重叠，从而可以提高网点面网点的视觉密度。
为了使光线经网点漫反射后再经过第一棱镜折射后在导光板的网点面上形成网点的虚像，需要使第一棱镜在网点面上的投影覆盖设置在网点面上的网点。
本公开的至少一个实施例提供了一种背光模组，该背光模组包括导光板，所述导光板包括出光面和与出光面相对设置的网点面，所述背光模组还包括 第一棱镜，所述第一棱镜设置在该导光板的出光面上并且其长度方向沿第一方向延伸；该导光板的网点面上设置有多组沿第一方向排布的第一网点组，该第一网点组中的每一组均包括多个沿第二方向排布的网点，所述第一方向与所述第二方向垂直。光线经过网点漫反射后，再经过第一棱镜折射，会在导光板的网点面上形成该网点的网点虚像，且该网点虚像的中心与相邻的网点不重叠，因而提高了网点的视觉密度，进而改善了背光模组的光学视觉效果。
在本公开的一个实施例中，所述多组第一网点组可以沿第一方向阵列排布，例如，沿第一方向等间距排列，所述第一网点组中的每一组中的网点沿第二方向线性排布，例如，沿第二方向等间距排列。
为了使光线经网点漫反射后再经过第一棱镜折射后在导光板的网点面上形成网点的虚像，需要使第一棱镜在网点面上的投影覆盖设置在网点面上的网点。
需要说明的是，若网点加工工艺所限制的最小间距为H，则如图3所示，可以将相邻两组网点组中相邻两个网点的最小间距设置为该最小间距H，同一网点组中相邻两个网点的间距可以大于该最小间距H，光线经过棱镜折射后形成的网点虚像1201位于同一网点组中相邻两个网点之间，提高了网点面中网点的视觉密度，进而改善了导光板的视觉效果。
在本公开的一个实施例中，如图2所示，该第一网点组12阵列排布的第一方向x可以与该导光板的四边中的任一边平行，此时该第一棱镜11的长度方向也与该导光板的四边中的任一边平行。
图4是根据本公开的另一实施例的导光板网点面的示意图。如图4所示，该第一网点组12阵列排布的第一方向x与该导光板的四边中的任一边的夹角α可以大于0度小于90度，此时该第一棱镜11的长度方向与该导光板的四边中的任一边的夹角也为α，以保证该第一棱镜11的长度方向与该第一方向x平行。
图5是根据本公开的另一实施例的背光模组的示意图，如图5所示，该背光模组还可以包括：第二棱镜13，即该导光板的出光面101上同时设置有第一棱镜11和第二棱镜13，且该第一棱镜11和第二棱镜13的长度方向不平行。此时，导光板的网点面102中网点的设置可以如图6所示，该网点面 102上还可以设置有多组沿第二方向z阵列排布的第二网点组14，每组该第二网点组14包括多个线性排布的网点，该第二方向z与每组该第二网点组14的网点的排布方向w垂直，且该第二方向z与该第一方向x相交。图5中该第二棱镜13的长度方向平行于图6中该第二网点组14的排布方向：第二方向z。由于导光板出光面上设置有长度方向不同的两组棱镜，为了保证该背光模组的发光效果，该导光板10与该第一棱镜11和该第二棱镜12可以一体成型。
需要说明的是，图5中的第一方向x与图6中的第一方向x为同一方向，图5中的第二方向z与图6中的第二方向z为同一方向。
为了使光线经第二网点组中的网点漫反射后再经过第二棱镜折射后在导光板的网点面上形成第二网点组中的网点的虚像，需要使第二棱镜在网点面上的投影覆盖设置在网点面上的第二网点组中的网点。
在本公开的一个实施例中，该第一棱镜11可以为棱镜膜或者由多个相互平行的条状棱镜组成的棱镜组，该导光板10与该第一棱镜11也可以为一体成型。导光板与第一棱镜一体成型，不仅可以提高背光模组的组装效率，还能够减小背光模组的厚度。
根据本公开的至少一个实施例的背光模组包括导光板，所述导光板包括出光面和与出光面相对设置的网点面，所述背光模组还包括第一棱镜，该第一棱镜设置在导光板的出光面上并且其长度方向沿第一方向延伸；该导光板的网点面上设置有多组沿第一方向排布的第一网点组，每组该第一网点组包括多个网点，该第一方向与每组该第一网点组的网点的排布方向垂直。因此光线经过网点漫反射后，再经过第一棱镜折射，会在导光板的网点面上形成该网点的网点虚像，且该网点虚像的中心与相邻的网点不重叠，因而提高了网点的视觉密度，进而改善了背光模组的光学视觉效果。
为了使光线经网点漫反射后再经过第一棱镜折射后在导光板的网点面上形成网点的虚像，需要使第一棱镜在网点面上的投影覆盖设置在网点面上的网点。
在本公开的一个实施例中，所述多组沿第一方向排布的第一网点组在第一方向上呈矩阵排列，例如，等间距地排列。
每组该第一网点组中的网点呈线性排列，例如，其可以沿一条直线等间 距排列。
在实际成产及组装本实用新型实施例提供的背光模组时，首先需要对导光板进行加工成形，之后可以通过印刷的方式在导光板的一侧设置多组沿第一方向阵列排布的网点组(如果是通过非印刷的方式设置网点，例如刻蚀或者机械刻画的方法，则可以将预先设计好的网点铸造在模具上，使网点在导光板成形时直接形成在网点面上)。之后，即可将棱镜放置在该导光板的出光面上，并保证棱镜的长度方向与该第一方向平行。如果导光板与棱镜一体成型，则棱镜在导光板成形时即已设置完成。
本公开的至少一个实施例提供了一种显示装置，该显示装置包括：显示面板，以及图1至图6任一所示的背光模组。
以上所述仅是本公开的示范性实施方式，而非用于限制本公开的保护范围，本公开的保护范围由所附的权利要求确定。
本申请要求于2015年12月1日递交的中国专利申请第201520976472.0号的优先权，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。

Claims (14)

  1. 一种背光模组，其包括：
    导光板，所述导光板包括出光面以及与所述出光面相对的网点面；
    第一棱镜，设置在所述出光面上，并且其长度方向沿第一方向延伸；
    其中，所述网点面上设置有多组沿第一方向排布的第一网点组，所述第一网点组包括多个网点，每组所述第一网点组的网点的排布方向与所述第一方向垂直。
  2. 根据权利要求1所述的背光模组，其中，所述多组沿第一方向排布的第一网点组呈矩阵排列。
  3. 根据权利要求1或2所述的背光模组，其中，每组所述第一网点组的网点等间隔排布。
  4. 根据权利要求1至3中任何一项所述的背光模组，其中，所述第一棱镜在所述网点面上的投影覆盖所述第一网点组中的网点。
  5. 根据权利要求1至4中任何一项所述的背光模组，其中，所述第一方向与所述导光板的四边中的任一边平行。
  6. 根据权利要求1至4中任何一项所述的背光模组，其中，所述第一方向与所述导光板的四边中的任一边的夹角大于0度小于90度。
  7. 根据权利要求1至6中任何一项所述的背光模组，其还包括：
    第二棱镜，所述第二棱镜设置在所述出光面上，且其长度方向沿第二方向延伸；
    所述网点面上还设置有多组沿第二方向排布的第二网点组，每组所述第二网点组包括多个网点，所述第二方向与每组所述第二网点组的网点的排布方向垂直，所述第二方向与所述第一方向相交；
    所述导光板与所述第一棱镜和所述第二棱镜一体成型。
  8. 如权利要求7所述的背光模组，其中，所述多组沿第二方向排布的第二网点组呈矩阵排列。
  9. 如权利要求7或8所述的背光模组，其中，每组所述第二网点组中的网点等间隔排列。
  10. 根据权利要求7至9中任何一项所述的背光模组，其中，所述第二 棱镜在所述网点面上的投影覆盖所述第二网点组中的网点。
  11. 根据权利要求1至10中任何一项所述的背光模组，其中，
    所述第一棱镜为棱镜膜或者由多个相互平行的条状棱镜组成的棱镜组。
  12. 根据权利要求1至11中任何一项所述的背光模组，其中，
    所述导光板与所述第一棱镜一体成型。
  13. 根据权利要求1至12中任何一项所述的背光模组，其中，所述第二棱镜为棱镜膜或由多个相互平行的棱镜组成的棱镜组。
  14. 一种显示装置，其包括：显示面板以及权利要求1至13中任何一项所述的背光模组。
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