WO2016201742A1 - 导光板及使用该导光板的背光模组 - Google Patents

导光板及使用该导光板的背光模组 Download PDF

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Publication number
WO2016201742A1
WO2016201742A1 PCT/CN2015/083434 CN2015083434W WO2016201742A1 WO 2016201742 A1 WO2016201742 A1 WO 2016201742A1 CN 2015083434 W CN2015083434 W CN 2015083434W WO 2016201742 A1 WO2016201742 A1 WO 2016201742A1
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WIPO (PCT)
Prior art keywords
light
light guide
guide plate
light source
arrays
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Ceased
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PCT/CN2015/083434
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English (en)
French (fr)
Inventor
陈玲艳
周革革
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Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/905,817 priority Critical patent/US20170192151A1/en
Publication of WO2016201742A1 publication Critical patent/WO2016201742A1/zh
Anticipated expiration legal-status Critical
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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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0078—Side-by-side arrangements, e.g. for large area displays
    • 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
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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 liquid crystal display technologies, and in particular, to a light guide plate and a backlight module using the same.
  • the liquid crystal display itself cannot emit light, and it is necessary to use a backlight module as a light source of the liquid crystal display.
  • the light guide plate is an important component in the backlight module, and is used for guiding the light source to emit a light beam, and converting the line light source or the point light source into a surface light source.
  • the light guide plate emits light incident on the end face by 90° from the front side by cleverly utilizing the principle of total reflection of light on the interface of the transparent plate.
  • the light guide plate is usually provided with light guiding elements arranged in an oblique line.
  • This regular and diagonal arrangement causes the components to collect light in a single direction, when the light passes.
  • the light guide plate it is easy to present an oblique straight line image in which the light and dark spaces are alternately arranged.
  • the display panel has a strip-shaped interlaced light-shielding layer (a black matrix in the middle of the RGB three-color color resist), which causes the light-shielding layer of the linear stripe to interfere with the light collected by the light guide plate, so that the light emitted from the display panel has interference fringes. , causing the display quality of the display device to decrease.
  • an embodiment of the present invention provides a light guide plate, wherein the light guide plate includes at least one column of light guide arrays, and the adjacent light guide arrays are spaced apart, and the light guide array is configured by at least two light guides.
  • the components are arranged adjacent to each other, and the light guide plate has a near light source side, and a light guiding area of the light guiding element away from the near light source side gradually increases.
  • the light guiding array is linear, and the light guiding array is parallel to the near light source side.
  • the light guiding array is linear, and the light guiding array is at an angle with the near light source side.
  • the light guiding array has a fold line shape.
  • the light guiding array is in an arc shape.
  • the light guiding arrays are arranged at equal intervals.
  • the embodiment of the present invention further provides a light guide plate, wherein the light guide plate includes at least one column of light guide arrays, and the adjacent light guide arrays are spaced apart, and the light guide array is arranged adjacent to at least two light guiding elements.
  • the light guiding array is in the shape of a line or an arc.
  • the light guide plate has a near light source side, and a light guiding area of the light guiding element away from the near light source side gradually increases.
  • the embodiment of the invention further provides a backlight module, comprising the above-mentioned light guide plate and a light source assembly disposed opposite to the light source side of the light guide plate.
  • the two light source components are respectively disposed corresponding to the two light source sides of the light guide plate.
  • the light guide plate and the backlight module provided by the embodiments of the present invention have the beneficial effects that the farther the light guiding element of the light guiding plate is away from the low beam side, the larger the light guiding area of the light guiding element is, and the far light source is improved.
  • the intensity of the light source of the light guide plate prevents the light emitted from the light guide plate from being concentrated in a certain direction, thereby reducing the interference, thereby making the light source projected on the display screen uniform; or the light guide array of the light guide plate of the embodiment of the invention is a line shape or an arc
  • the linear arrangement avoids the light emitted from the light guide plate from being concentrated in a certain direction, thereby reducing interference and thereby making the light source projected on the display screen uniform.
  • FIG. 1 is a schematic structural view of a light guide plate in the prior art
  • FIG. 2 is a schematic structural view of a first embodiment of a light guide plate according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a first embodiment of a backlight module according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a second embodiment of a light guide plate according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a second embodiment of a backlight module according to an embodiment of the present invention.
  • a light guide plate 100 includes at least one column of light guide arrays 110 adjacent to each other.
  • the light guiding arrays 110 are spaced apart, and the light guiding array 110 is arranged adjacent to the at least two light guiding elements 111.
  • the light guiding plate 100 has a near light source side 101, and the light guiding area of the light guiding element 111 away from the near light source side 101 gradually increases. Increase.
  • the light guiding array 110 is linear, and the light guiding array 110 is at an angle with the near light source side 101, and the angle is an acute angle.
  • the shape of the light guiding array 110 refers to the shape of the line connecting the geometric centers of the light guiding elements 111 of the light guiding array 110.
  • the light guiding array 110 is linear, and the light guiding array 110 is parallel to the near light source side 101.
  • the light guiding array 110 has a line shape or an arc shape.
  • the light guiding arrays 110 are disposed at equal intervals.
  • the further away from the near-light source side 101 the shorter the spacing between the light guiding arrays 110.
  • an embodiment of the present invention further provides a backlight module including the above-described light guide plate 100 and a light source assembly 200 disposed opposite to the light source side 101 of the light guide plate 100 .
  • the light source assembly 200 in the embodiment of the present invention is two, which are respectively disposed corresponding to the two near light source sides 101 of the light guide plate 100.
  • an embodiment of the present invention further provides a light guide plate 100.
  • the light guide plate 100 includes at least one column of light guide arrays 110.
  • the adjacent light guide arrays 110 are spaced apart, and the light guide array 110 is composed of at least two light guiding elements 111. Arranged adjacent to each other, the light guiding array 110 is in the shape of a line or an arc.
  • the light guiding array 110 of the light guide plate 100 of the embodiment of the present invention is arranged in a line shape or an arc shape, which avoids the light emitted by the light guide plate 100 from being concentrated in a certain direction, thereby reducing interference, thereby making the light source projected on the display screen uniform. .
  • the light guide plate 100 has the near light source side 101, and the light guide area away from the near light source side 101 light guiding element 111 gradually increases.
  • an embodiment of the present invention further provides a backlight module including the above-described light guide plate 100 and a light source assembly 200 disposed opposite to the light source side 101 of the light guide plate 100 .
  • the light source assembly 200 in the embodiment of the present invention is two, which are respectively disposed corresponding to the two near light source sides 101 of the light guide plate 100.

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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）和背光模组。导光板（100）包括至少一列导光阵列（110）。相邻的导光阵列（110）间隔设置。导光阵列（110）由至少两个导光元件（111）相邻排布而成。导光板（100）具有近光源侧（101）。远离近光源侧（101）导光元件（111）的导光面积逐渐增大，提高了远光源处导光板（100）的光源强度，避免了导光板（100）的出光光线沿某一方向集中，减少了干涉，进而使得投射于显示屏的光源均匀。导光板（100）的导光阵列（110）还可以呈折线状或弧线状排布。

Description

导光板及使用该导光板的背光模组 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种导光板及使用该导光板的背光模组。
背景技术
液晶显示器本身不能发光，需要利用背光模组来作为液晶显示器的光源。其中，导光板是背光模组中的重要组件，用于引导光源发出光束的传输方向，将线光源或点光源转换成面光源出射。导光板是通过巧妙利用光在透明板界面上全反射的原理，将端面入射的光偏转90°从正面射出。
现有技术中，如图1，导光板上常设置有按照斜直线排布的导光元件，这种规则且斜线状排布的导致元件在单一方向上的集光效果佳，当光线通过该导光板时，容易呈现出亮暗间隔交错排布的斜直线图像。而显示面板上具有条状交错的遮光层(RGB三色色阻中间的黑色矩阵)，导致直线条纹的遮光层与导光板射出的集光光线发生光干涉现象，使得射出显示面板的光线出现干涉条纹，造成显示装置的显示品质降低。
发明内容
本发明的目的在于提供一种出光均匀的导光板。
为了解决上述技术问题，本发明实施例提供了一种导光板，所述导光板包括至少一列导光阵列，相邻的所述导光阵列间隔设置，所述导光阵列由至少两个导光元件相邻排布而成，所述导光板具有近光源侧，远离所述近光源侧所述导光元件的导光面积逐渐增大。
其中，所述导光阵列呈直线状，所述导光阵列与所述近光源侧平行。
其中，所述导光阵列呈直线状，所述导光阵列与所述近光源侧呈一夹角。
其中，所述导光阵列呈折线状。
其中，所述导光阵列呈弧线状。
其中，所述导光阵列之间为等间隔设置。
其中，距所述近光源侧越远，所述导光阵列之间的间隔越短。
本发明实施例还提出了一种导光板，所述导光板包括至少一列导光阵列，相邻的所述导光阵列间隔设置，所述导光阵列由至少两个导光元件相邻排布而成，所述导光阵列呈折线状或弧线状。
其中，所述导光板具有近光源侧，远离所述近光源侧所述导光元件的导光面积逐渐增大。
本发明实施例还提出了一种背光模组，包括上述的导光板以及与所述导光板的近光源侧相对设置的光源组件。
其中，所述光源组件为两个，分别对应所述导光板的两所述近光源侧设置。
本发明实施例提供的导光板及背光模组，其有益效果在于，本发明实施例导光板的导光元件离近光侧越远，导光元件的导光面积越大，提高了远光源处导光板的光源强度，避免了导光板的出光光线沿某一方向集中，减少了干涉，进而使得投射于显示屏的光源均匀；或者本发明实施例的导光板的导光阵列呈折线状或弧线状排布，避免了导光板的出光光线沿某一方向集中，减少了干涉，进而使得投射于显示屏的光源均匀。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术中的导光板的结构示意图；
图2是本发明实施例导光板第一实施方式的结构示意图；
图3是本发明实施例背光模组第一实施方式的结构示意图；
图4是本发明实施例导光板第二实施方式的结构示意图；
图5是本发明实施例背光模组第二实施方式的结构示意图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
参照图2，一种导光板100，导光板100包括至少一列导光阵列110，相邻 的导光阵列110间隔设置，导光阵列110由至少两个导光元件111相邻排布而成，导光板100具有近光源侧101，远离近光源侧101导光元件111的导光面积逐渐增大。
本发明实施例导光板100的导光元件111离近光侧越远，导光元件111的导光面积越大，提高了远光源处导光板100的光源强度，避免了导光板100的出光光线沿某一方向集中，减少了干涉，进而使得投射于显示屏的光源均匀。
优选地，导光阵列110呈直线状，导光阵列110与近光源侧101呈一夹角，夹角为锐角。在本发明实施例中，对导光阵列110的形状是指位于该导光阵列110的各导光元件111几何中心的连线的形状。
进一步而言，在本发明实施例的其他实施方式中，导光阵列110呈直线状，导光阵列110与近光源侧101平行。
进一步而言，在本发明实施例的其他实施方式中，导光阵列110呈折线状或弧线状。
优选地，导光阵列110之间为等间隔设置。
在本发明实施例的其他实施方式中，距近光源侧101越远，导光阵列110之间的间隔越短。
参照图3，本发明实施例还提出了一种背光模组，包括上述的导光板100以及与导光板100的近光源侧101相对设置的光源组件200。具体地，本发明实施例中的光源组件200为两个，分别对应导光板100的两近光源侧101设置。
参照图4，本发明实施例还提出了一种导光板100，导光板100包括至少一列导光阵列110，相邻的导光阵列110间隔设置，导光阵列110由至少两个导光元件111相邻排布而成，导光阵列110呈折线状或弧线状。
本发明实施例的导光板100的导光阵列110呈折线状或弧线状排布，避免了导光板100的出光光线沿某一方向集中，减少了干涉，进而使得投射于显示屏的光源均匀。
进一步而言，导光板100具有近光源侧101，远离近光源侧101导光元件111的导光面积逐渐增大。
参照图5，本发明实施例还提出了一种背光模组，包括上述的导光板100以及与导光板100的近光源侧101相对设置的光源组件200。具体地，本发明实施例中的光源组件200为两个，分别对应导光板100的两近光源侧101设置。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (19)

  1. 一种导光板，其特征在于，所述导光板包括至少一列导光阵列，相邻的所述导光阵列间隔设置，所述导光阵列由至少两个导光元件相邻排布而成，所述导光板具有近光源侧，远离所述近光源侧所述导光元件的导光面积逐渐增大。
  2. 根据权利要求1所述的导光板，其特征在于，所述导光阵列之间为等间隔设置。
  3. 根据权利要求1所述的导光板，其特征在于，距所述近光源侧越远，所述导光阵列之间的间隔越短。
  4. 根据权利要求1所述的导光板，其特征在于，所述导光阵列呈直线状，所述导光阵列与所述近光源侧平行。
  5. 根据权利要求3所述的导光板，其特征在于，所述导光阵列之间为等间隔设置。
  6. 根据权利要求3所述的导光板，其特征在于，距所述近光源侧越远，所述导光阵列之间的间隔越短。
  7. 根据权利要求1所述的导光板，其特征在于，所述导光阵列呈直线状，所述导光阵列与所述近光源侧呈一夹角。
  8. 根据权利要求7所述的导光板，其特征在于，所述导光阵列之间为等间隔设置。
  9. 根据权利要求7所述的导光板，其特征在于，距所述近光源侧越远，所述导光阵列之间的间隔越短。
  10. 根据权利要求1所述的导光板，其特征在于，所述导光阵列呈折线状。
  11. 根据权利要求10所述的导光板，其特征在于，所述导光阵列之间为等间隔设置。
  12. 根据权利要求10所述的导光板，其特征在于，距所述近光源侧越远，所述导光阵列之间的间隔越短。
  13. 根据权利要求1所述的导光板，其特征在于，所述导光阵列呈弧线状。
  14. 根据权利要求13所述的导光板，其特征在于，所述导光阵列之间为等 间隔设置。
  15. 根据权利要求13所述的导光板，其特征在于，距所述近光源侧越远，所述导光阵列之间的间隔越短。
  16. 一种导光板，其特征在于，所述导光板包括至少一列导光阵列，相邻的所述导光阵列间隔设置，所述导光阵列由至少两个导光元件相邻排布而成，所述导光阵列呈折线状或弧线状。
  17. 根据权利要求16所述的导光板，其特征在于，所述导光板具有近光源侧，远离所述近光源侧所述导光元件的导光面积逐渐增大。
  18. 一种背光模组，其特征在于，包括权利要求1-17任一项所述的导光板以及与所述导光板的近光源侧相对设置的光源组件。
  19. 根据权利要求18所述的背光模组，其特征在于，所述光源组件为两个，分别对应所述导光板的两所述近光源侧设置。
PCT/CN2015/083434 2015-06-18 2015-07-07 导光板及使用该导光板的背光模组 Ceased WO2016201742A1 (zh)

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