WO2014079104A1 - 背光模组及用该背光模组的液晶显示装置 - Google Patents

背光模组及用该背光模组的液晶显示装置 Download PDF

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Publication number
WO2014079104A1
WO2014079104A1 PCT/CN2012/085779 CN2012085779W WO2014079104A1 WO 2014079104 A1 WO2014079104 A1 WO 2014079104A1 CN 2012085779 W CN2012085779 W CN 2012085779W WO 2014079104 A1 WO2014079104 A1 WO 2014079104A1
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WIPO (PCT)
Prior art keywords
optical fiber
light
optical
backlight module
splitter
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PCT/CN2012/085779
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English (en)
French (fr)
Inventor
李德华
陈仕祥
陈立宜
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/807,381 priority Critical patent/US9588288B2/en
Publication of WO2014079104A1 publication Critical patent/WO2014079104A1/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
    • G02B6/0066—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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module and a liquid crystal display device using the same. Background technique
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal displays, which include a liquid crystal panel and a backlight module.
  • the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, control the liquid crystal molecules to change direction by energizing the circuit of the glass substrate, and refract the light of the backlight module to produce a picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is required to normally display the image. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-lit backlight module and a direct-lit backlight module according to the incident position of the light source.
  • a light source such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel, and a surface light source is directly formed and supplied to the liquid crystal panel.
  • the side-lit backlight module has an illumination light source such as an LED light bar disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the light source enters the optical film group from the light incident surface on the optical film group side. After being reflected and diffused, the light exits from the optical film set to form a surface light source for the liquid crystal panel.
  • the light source LED or CCFL in the prior art emits white light through the phosphor mixed light, the color gamut is narrow and the color expression is weak, and the true color of the object cannot be truly restored. Therefore, a new backlight mode has been proposed, that is, using the sun with the most gamut and the strongest color expression as the backlight, and introducing sunlight into the backlight system through the optical fiber to provide backlight for the liquid crystal panel, so that the liquid crystal panel The displayed picture is more beautiful and the color is more authentic. At the same time, the use of sunlight is also in line with the requirements of today's products for energy conservation and environmental protection.
  • FIG. 1 and FIG. 2 are schematic diagrams showing the structure of a backlight module and a liquid crystal display device using sunlight as a backlight.
  • the liquid crystal display device includes a back plate 100 and a light guide plate 300 disposed in the back plate 100.
  • the optical fiber substrate 500 on the light incident side of the light guide plate 300, the plurality of optical fibers 700 connected to the optical fiber substrate 500, the middle frame 800 provided on the back plate 100, and the liquid crystal display panel 900 provided on the middle frame 800.
  • One end of the optical fiber 700 is connected to the optical fiber substrate 500, and the other end is connected to a solar concentrator (not shown).
  • the solar concentrator collects sunlight, and the solar light is transmitted to the light through the optical fiber 700.
  • the fiber substrate 500 enters the light guide plate 300 from the light incident surface of the light guide plate 300, and is emitted from the light exit surface of the light guide plate 300 to provide a uniform surface light source for the liquid crystal display panel 900.
  • a distance needs to be mixed, but when a small number of optical fibers 700 are used, a large mixing distance is required, otherwise there is a firefly effect on the light incident side, and multiple light spots appear, and the mixed light is added.
  • the distance of the light needs to increase the thickness of the frame, which will affect the appearance of the liquid crystal display device.
  • the use of a larger number of fibers 700 can solve the problem of firefly effect, but the increase in the amount of fiber 700 from the concentrator to the light entrance increases the cost. Conducive to cost control. Summary of the invention
  • Another object of the present invention is to provide a liquid crystal display device which has a wide color gamut, effectively improves image color quality, and has a simple structure and low cost, which is advantageous for cost control.
  • the present invention provides a backlight module, including: a concentrator, a plurality of first optical fibers connecting the concentrators, a plurality of first optical fiber splitters connected to the first optical fibers, and a first optical fiber branch. a plurality of second optical fibers and a light guide plate disposed on a side of the second optical fiber, each of the first optical fiber splitters includes a first light entrance port and a plurality of first light exit ports, the first light input The port is connected to the first optical fiber, and the first optical outlet is connected to the second optical fiber.
  • the method further includes a plurality of second fiber splitters connecting the second fiber away from the first fiber splitter end, and a plurality of third fibers connected to the second fiber splitter, each second fiber splitter including a second
  • the second optical port is connected to the second optical fiber
  • the second optical port is connected to the third optical fiber
  • the light guiding plate is disposed on the third optical fiber away from the second optical fiber splitter. Side of the side.
  • the backplane includes a bottom plate and a side plate connecting the bottom plate, and the light guide plate includes a bottom surface, a top surface opposite to the bottom surface, and a bottom surface and a top surface.
  • the plurality of side surfaces include at least one light incident surface, and the optical fiber substrate is disposed on the inner side of the side plate of the back plate corresponding to the light incident surface, and the optical fiber substrate is used for fixing the second optical fiber.
  • the backplane includes a bottom plate and a side plate connecting the bottom plate, and the light guide plate includes a bottom surface, a top surface opposite to the bottom surface, and a bottom surface and a top surface.
  • the plurality of side surfaces include at least one light incident surface, and the optical fiber substrate is disposed on the inner side of the side plate of the back plate corresponding to the light incident surface, and the optical fiber substrate is used for fixing the third optical fiber.
  • the first fiber splitter and the second fiber splitter are each made of two or more optical fibers for side fusion tapers.
  • the present invention also provides a backlight module, comprising: a concentrator, a plurality of first optical fibers connecting the concentrators, a plurality of first optical fiber splitters connected to the first optical fibers, and a number connecting the first optical fiber splitters Article a second optical fiber, and a light guide plate disposed on a side of the second optical fiber, each of the first optical fiber splitters includes a first optical entrance and a plurality of first optical outlets, and the first optical interface is connected to the first optical fiber The first light exit port is connected to the second optical fiber;
  • the method further includes a plurality of second fiber splitters connecting the second fiber away from the first fiber splitter end, and a plurality of third fibers connected to the second fiber splitter, each second fiber splitter including a second
  • the second optical port is connected to the second optical fiber
  • the second optical port is connected to the third optical fiber
  • the light guiding plate is disposed on the third optical fiber away from the second optical fiber splitter.
  • the side plate further includes a back plate and a fiber substrate disposed in the back plate, the back plate includes a bottom plate and a side plate connecting the bottom plate, the light guide plate includes a bottom surface, a top surface opposite to the bottom surface, and a bottom surface and a top surface a plurality of sides of the surface, the plurality of sides comprising at least one light incident surface, the optical fiber substrate corresponding to the light incident surface is disposed inside the side plate of the back plate, and the optical fiber substrate is used for fixing the third optical fiber;
  • the first optical fiber splitter and the second optical fiber splitter are all made by two side optical fibers and side welding tapers.
  • the present invention also provides a liquid crystal display device, comprising: a backlight module, a plastic frame disposed on the backlight module, a liquid crystal display panel disposed on the plastic frame, and a front frame disposed on the liquid crystal display panel, the backlight module
  • the group includes a concentrator, a plurality of first fibers connected to the concentrator, a plurality of first fiber splitters connected to the first fiber, a plurality of second fibers connected to the first fiber splitter, and a second a light guide plate on the optical fiber side, each of the first optical fiber splitters includes a first light entrance port and a plurality of first light exit ports, wherein the first light entrance port is connected to the first optical fiber, and the first light exit port is connected to the first optical port.
  • Two optical fibers are used to the backlight module
  • a plastic frame disposed on the backlight module
  • a liquid crystal display panel disposed on the plastic frame
  • a front frame disposed on the liquid crystal display panel
  • the backlight module The group includes a
  • the method further includes a plurality of second fiber splitters connecting the second fiber away from the first fiber splitter end, and a plurality of third fibers connected to the second fiber splitter, each second fiber splitter including a second
  • the second optical port is connected to the second optical fiber
  • the second optical port is connected to the third optical fiber
  • the light guiding plate is disposed on the third optical fiber away from the second optical fiber splitter. Side of the side.
  • the backplane includes a bottom plate and a side plate connecting the bottom plate, and the light guide plate includes a bottom surface, a top surface opposite to the bottom surface, and a bottom surface and a top surface.
  • the plurality of side surfaces include at least one light incident surface, and the optical fiber substrate is disposed on the inner side of the side plate of the back plate corresponding to the light incident surface, and the optical fiber substrate is used for fixing the second optical fiber.
  • the backplane includes a bottom plate and a side plate connecting the bottom plate, and the light guide plate includes a bottom surface, a top surface opposite to the bottom surface, and a bottom surface and a top surface.
  • the plurality of side surfaces include at least one light incident surface, and the optical fiber substrate is disposed on the inner side of the side plate of the back plate corresponding to the light incident surface, and the optical fiber substrate is used for fixing the third optical fiber.
  • the first fiber splitter and the second fiber splitter are each made of two or more optical fibers for side fusion tapers.
  • Backlight module of the present invention and liquid crystal display device using the same The solar light is used as a backlight, and the sunlight is split by the optical fiber splitter, so that the sunlight of the light guide plate is densely distributed and evenly distributed, and the longer length of the optical fiber is used less, which solves the firefly.
  • the effect problem makes the image have higher color quality, reduces the amount of fiber used, reduces the cost, and has a narrow border and a beautiful appearance.
  • FIG. 1 is a schematic structural view of a conventional backlight module using sunlight as a backlight
  • FIG. 2 is a schematic structural view of a conventional liquid crystal display device using sunlight as a backlight
  • FIG. 3 is a schematic diagram of an embodiment of a backlight module according to the present invention. Schematic;
  • FIG. 4 is a schematic diagram of an optical path principle of a backlight module of the present invention.
  • FIG. 5 is a schematic structural view of another embodiment of a backlight module according to the present invention.
  • FIG. 6 is a perspective exploded view of a liquid crystal display device of the present invention. detailed description
  • the present invention provides a backlight module 20, including: a concentrator 2, a plurality of first optical fibers 3 connected to the concentrator 2, and a plurality of first optical fibers connected to the first optical fibers 3. a plurality of second optical fibers 6 connected to the first optical fiber splitter 5, and a light guide plate 7 disposed on the side of the second optical fiber 6; each of the first optical fiber splitters 5 includes a first optical entrance 52 and a plurality of first light exit ports 54, the first light entrance port 52 is connected to the first optical fiber 3, the first light exit port 54 is connected to the second optical fiber 6, and the light collector 2 is used for collecting sunlight, and the light is collected
  • the sunlight is transmitted from the first optical fiber 3 to the first optical fiber splitter 5, and the first optical fiber splitter 5 divides the sunlight into a plurality of solar beams, and the plurality of solar beams are transmitted to the light guide plate 7 via the second optical fiber 6. And forming a backlight module 20 with a light hook.
  • the backlight module 20 further includes a backplane 8 and a fiber optic substrate 9 disposed in the backplane 8.
  • the backplane 8 includes a bottom panel 82 and a side panel 84 connecting the bottom panel 82.
  • the light guide panel 7 includes a bottom surface (not The top surface 74 of the bottom surface and the plurality of sides disposed between the bottom surface and the top surface 74, the number The side surfaces include at least one light incident surface 76, and the optical fiber substrate 9 is disposed on the inner side of the side plate 84 of the back plate 8 corresponding to the light incident surface 76.
  • the optical fiber substrate 9 is used for fixing the second optical fiber 6.
  • the plurality of second optical fibers 6 are disposed on the optical fiber substrate 9 with a plurality of holes 92, and the second optical fiber 6 is received.
  • the end surface of the second optical fiber 6 is disposed toward the light incident surface 76 of the light guide plate 7, and the sunlight collected by the concentrator 2 is transmitted to the first optical fiber branch via the first optical fiber 3.
  • the first optical fiber splitter 5 divides the sunlight into a plurality of solar beams, and the plurality of solar beams are emitted from the end surface of the second optical fiber 6 and enter the light guide plate 7 through the light incident surface 76 of the light guide plate 7. In turn, a surface light source with uniform illumination is provided.
  • the first optical fiber splitter 5 is made of two or more optical fibers for side welding and taper, which is simple and convenient to operate, has low cost, and effectively separates the light beam.
  • the length of the first optical fiber 3 can be set longer, the number can be relatively small, and the production cost can be controlled.
  • the length of the second optical fiber 6 can be set shorter, and the number can be set according to the backlight module 20. The setting of brightness and illumination uniformity is flexible, practical, and can effectively solve the firefly effect problem.
  • the backlight module 20 further includes a plurality of second terminals connecting the second optical fiber 6 away from the end of the first optical fiber splitter 5
  • the optical fiber splitter 10 and the plurality of third optical fibers 12 connected to the second optical fiber splitter 10 each of the second optical fiber splitters 10 includes a second optical entrance 102 and a plurality of second optical outlets 104.
  • the second optical port 102 is connected to the second optical fiber 6
  • the second optical port 104 is connected to the third optical fiber 12 .
  • the light guide plate 7 is disposed on a side of the third optical fiber 12 away from the second optical fiber splitter 10 .
  • the second fiber splitter 10 is made of two or more optical fibers for side welding tapers.
  • the optical fiber substrate 9 is used for fixing the third optical fiber 12.
  • the structure and technical effects thereof are the same as those of the above embodiment, and are not described herein.
  • the length of the first optical fiber 3 can be set to be the longest and the quantity is relatively small to control the production cost, and the length of the second optical fiber 6 is shorter than the length of the first optical fiber 3, and the number is relatively the same.
  • the number of the plurality is increased to improve the light splitting effect, thereby improving the uniformity of illumination of the light module 20 and eliminating the firefly effect.
  • the length of the third optical fiber 12 is set to be the shortest, and the number is set to be the most, further improving the illumination of the backlight module 20. Uniformity and elimination of firefly effects.
  • the present invention further provides a liquid crystal display device, including: a backlight module 20 , a plastic frame 40 disposed on the backlight module 20 , and a liquid crystal display panel 60 disposed on the plastic frame 40 .
  • the backlight module 20 provides a better uniform surface light source for the liquid crystal display panel 60 for the liquid crystal display panel 60 to display an image
  • the plastic frame 40 is used for carrying and protecting the liquid crystal display.
  • the front frame 80 is used to fix the liquid crystal display panel 60 It is set in the plastic frame 40.
  • the backlight module 20 includes a concentrator 2, a plurality of first optical fibers 3 connected to the concentrator 2, a plurality of first optical fiber splitters 5 connected to the first optical fibers 3, and a first optical fiber splitter 5 connected thereto. a plurality of second optical fibers 6 and a light guide plate 7 disposed on the side of the second optical fiber 6 , each of the first optical fiber splitters 5 includes a first light entrance port 52 and a plurality of first light exit ports 54 An optical port 52 is connected to the first optical fiber 3, and the first optical outlet 54 is connected to the second optical fiber 6.
  • the concentrator 2 is used for collecting sunlight, and the sunlight is transmitted from the first optical fiber 3 to the first optical fiber.
  • the first optical fiber splitter 5 divides the sunlight into a plurality of solar beams, and the plurality of solar beams are transmitted to the light guide plate 7 via the second optical fiber 6 to form a uniform illumination backlight module 20.
  • the backlight module 20 further includes a backplane 8 and a fiber optic substrate 9 disposed in the backplane 8.
  • the backplane 8 includes a bottom panel 82 and a side panel 84 connecting the bottom panel 82.
  • the light guide panel 7 includes a bottom surface and a relative surface. a top surface 74 of the bottom surface and a plurality of side surfaces disposed between the bottom surface and the top surface 74.
  • the plurality of side surfaces include at least one light incident surface 76.
  • the fiber substrate 9 is disposed on the side of the back plate 8 corresponding to the light incident surface 76. Inside the plate 84.
  • the optical fiber substrate 9 is used for fixing the second optical fiber 6.
  • the plurality of second optical fibers 6 are disposed on the optical fiber substrate 9 with a plurality of holes 92, and the second optical fiber 6 is received.
  • the end surface of the second optical fiber 6 is disposed toward the light incident surface 76 of the light guide plate 7, and the sunlight collected by the concentrator 2 is transmitted to the first optical fiber branch via the first optical fiber 3.
  • the first optical fiber splitter 5 divides the sunlight into a plurality of solar beams, and the plurality of solar beams are emitted from the end surface of the second optical fiber 6 and enter the light guide plate 7 through the light incident surface 76 of the light guide plate 7. In turn, a surface light source with uniform illumination is provided.
  • the first optical fiber splitter 5 is made of two or more optical fibers for side welding tapers, which is simple and convenient to operate, low in cost, and effectively separates the light beam.
  • the length of the first optical fiber 3 can be set longer, the number can be relatively small, and the production cost can be controlled.
  • the length of the second optical fiber 6 can be set shorter, and the number can be set according to the backlight module 20. The setting of brightness and illumination uniformity is flexible, practical, and can effectively solve the firefly effect problem.
  • the backlight module of the present invention and the liquid crystal display device using the backlight module use sunlight as a backlight, and the sunlight is split by the optical fiber splitter, so that the sunlight of the light guide plate is dense. Evenly distributed, and the longer length of the fiber is used less, which not only solves the problem of firefly effect, but also makes the image have higher color quality, reduces the amount of fiber, reduces the cost, and has a narrow frame and beautiful appearance. .

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

Abstract

一种背光模组（20）及用该背光模组（20）的液晶显示装置，背光模组（20）包括：集光器（2）、连接集光器（2）的数条第一光纤（3）、连接第一光纤（3）的数个第一光纤分路器（5）、连接第一光纤分路器（5）的数条第二光纤（6）、及设于第二光纤（6）一侧的导光板（7），每一第一光纤分路器（5）包括第一入光口（52）及数个第一出光口（54），第一入光口（52）连接第一光纤（3），第一出光口（54）连接第二光纤（6）。这种背光模组（20）及用背光模组（20）的液晶显示装置，采用太阳光作为背光源，通过光纤分路器（5）对太阳光进行分路，使导光板（7）入光处的太阳光密集且均匀分布，而长度较长的光纤（3）用量较少，既解决了萤火虫效应问题，使影像具有较高的色彩品质，又减少了光纤的用量，降低了成本，还具有较窄的边框，处形美观。

Description

背光模组及用该背光模组的液晶显示装置 技术领域
本发明涉及液晶显示领域， 尤其涉及一种背光模组及用该背光模组的 液晶显示装置。 背景技术
液晶显示装置 （LCD, Liquid Crystal Display )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用。 现有市场上的液晶显示装置大部分 为背光型液晶显示器， 其包括液晶面板及背光模组（backlight module ) 。 液晶面板的工作原理是在两片平行的玻璃基板中放置液晶分子， 通过给玻 璃基板的电路通电来控制液晶分子改变方向， 将背光模组的光线折射出来 产生画面。 由于液晶面板本身不发光， 需要借由背光模组提供的光源来正 常显示影像， 因此， 背光模组成为液晶显示装置的关键组件之一。 背光模 组依照光源入射位置的不同分成侧入式背光模组与直下式背光模组两种。 直下式背光模组是将发光光源例如 CCFL(Cold Cathode Fluorescent Lamp, 阴极萤光灯管)或 LED(Light Emitting Diode发光二极管)设置在液晶面板后 方， 直接形成面光源提供给液晶面板。 而侧入式背光模组是将发光光源例 如 LED 灯条（lightbar )设于液晶面板侧后方的背板边缘， 发光光源发出 的光线从光学膜片组一侧的入光面进入光学膜片组， 经反射和扩散后从光 学膜片组出光面出射， 以形成面光源提供给液晶面板。
由于现有技术中光源 LED或 CCFL都是通过荧光粉混光发出白光， 其色域较窄、 色彩表现力较弱， 不能真正还原物体的真实色彩。 因此， 人 们提出了一种新的背光模式， 即使用色域最全、 色彩表现力最强的太阳光 作为背光源， 通过光纤将太阳光导入背光系统中， 为液晶面板提供背光， 使液晶面板显示的画面更加絢丽， 色彩真实性更强。 同时， 使用太阳光还 符合当今产品节能环保的要求。
如图 1及图 2所示， 为现有采用太阳光作为背光源的背光模组及液晶 显示装置结构示意图， 液晶显示装置包括背板 100、 设于背板 100 内的导 光板 300, 设于导光板 300入光面一侧的光纤基板 500、 连接光纤基板 500 的数条光纤 700、 设于背板 100上的中框 800、 及设于中框 800上的液晶 显示面板 900。 光纤 700 的一端连接光纤基板 500, 另一端连接太阳集光 器（未图示） ， 太阳集光器收集太阳光， 通过光纤 700将太阳光传导至光 纤基板 500, 由导光板 300的入光面进入导光板 300, 再由导光板 300的 出光面射出， 为液晶显示面板 900提供分布均匀的面光源。 光线进入导光 板 300后需要一段距离进行混光， 但是， 使用较少数量的光纤 700时， 需 要较大的混光距离， 否则入光侧存在萤火虫效应， 会出现多个光点， 而增 加混光距离需要增加边框的厚度， 将影响液晶显示装置的外观； 使用较多 数量的光纤 700 时可以解决萤火虫效应问题， 但由于从集光器到入光处光 纤 700用量增多， 使成本上涨， 不利于成本控制。 发明内容
本发明的目的在于提供一种背光模组， 其采用太阳光作为背光源， 有 效降低生产成本， 且光照均匀， 有效解决萤火虫效应问题。
本发明的另一目的在于提供一种液晶显示装置， 其色域宽广， 有效提 高影像色彩品质， 且结构简单， 成本较低， 利于成本控制。
为实现上述目的， 本发明提供一种背光模组， 包括： 集光器、 连接集 光器的数条第一光纤、 连接第一光纤的数个第一光纤分路器、 连接第一光 纤分路器的数条第二光纤、 及设于第二光纤一侧的导光板， 每一第一光纤 分路器包括一第一入光口及数个第一出光口， 所述第一入光口连接第一光 纤， 所述第一出光口连接第二光纤。
还包括连接第二光纤远离第一光纤分路器端的数个第二光纤分路器、 及连接第二光纤分路器的数个第三光纤， 每一第二光纤分路器包括一第二 入光口及数个第二出光口， 所述第二入光口连接第二光纤， 所述第二出光 口连接第三光纤， 所述导光板设于第三光纤远离第二光纤分路器的侧边。
还包括背板、 及设于背板内的光纤基板， 所述背板包括底板及连接底 板的侧板， 所述导光板包括底面、 相对底面的顶面及设于底面与顶面之间 的数个侧面， 该数个侧面包括至少一入光面， 所述光纤基板对应该入光面 设于背板的侧板内侧， 所述光纤基板用于固定第二光纤。
还包括背板、 及设于背板内的光纤基板， 所述背板包括底板及连接底 板的侧板， 所述导光板包括底面、 相对底面的顶面及设于底面与顶面之间 的数个侧面， 该数个侧面包括至少一入光面， 所述光纤基板对应该入光面 设于背板的侧板内侧， 所述光纤基板用于固定第三光纤。
所述第一光纤分路器、 第二光纤分路器均由两根以上光纤进行侧面熔 接拉锥制成。
本发明还提供一种背光模组， 包括： 集光器、 连接集光器的数条第一 光纤、 连接第一光纤的数个第一光纤分路器、 连接第一光纤分路器的数条 第二光纤、 及设于第二光纤一侧的导光板， 每一第一光纤分路器包括一第 一入光口及数个第一出光口， 所述第一入光口连接第一光纤， 所述第一出 光口连接第二光纤；
还包括连接第二光纤远离第一光纤分路器端的数个第二光纤分路器、 及连接第二光纤分路器的数个第三光纤， 每一第二光纤分路器包括一第二 入光口及数个第二出光口， 所述第二入光口连接第二光纤， 所述第二出光 口连接第三光纤， 所述导光板设于第三光纤远离第二光纤分路器的侧边； 还包括背板、 及设于背板内的光纤基板， 所述背板包括底板及连接底 板的侧板， 所述导光板包括底面、 相对底面的顶面及设于底面与顶面之间 的数个侧面， 该数个侧面包括至少一入光面， 所述光纤基板对应该入光面 设于背板的侧板内侧， 所述光纤基板用于固定第三光纤；
其中， 所述第一光纤分路器、 第二光纤分路器均由两根以上光纤进行 侧面熔接拉锥制成。
本发明还提供一种液晶显示装置， 包括： 背光模组、 设于背光模组上 的胶框、 设于胶框上的液晶显示面板及设于液晶显示面板上的前框， 所述 背光模组包括集光器、 连接集光器的数条第一光纤、 连接第一光纤的数个 第一光纤分路器、 连接第一光纤分路器的数条第二光纤、 及设于第二光纤 一侧的导光板， 每一第一光纤分路器包括一第一入光口及数个第一出光 口， 所述第一入光口连接第一光纤， 所述第一出光口连接第二光纤。
还包括连接第二光纤远离第一光纤分路器端的数个第二光纤分路器、 及连接第二光纤分路器的数个第三光纤， 每一第二光纤分路器包括一第二 入光口及数个第二出光口， 所述第二入光口连接第二光纤， 所述第二出光 口连接第三光纤， 所述导光板设于第三光纤远离第二光纤分路器的侧边。
还包括背板、 及设于背板内的光纤基板， 所述背板包括底板及连接底 板的侧板， 所述导光板包括底面、 相对底面的顶面及设于底面与顶面之间 的数个侧面， 该数个侧面包括至少一入光面， 所述光纤基板对应该入光面 设于背板的侧板内侧， 所述光纤基板用于固定第二光纤。
还包括背板、 及设于背板内的光纤基板， 所述背板包括底板及连接底 板的侧板， 所述导光板包括底面、 相对底面的顶面及设于底面与顶面之间 的数个侧面， 该数个侧面包括至少一入光面， 所述光纤基板对应该入光面 设于背板的侧板内侧， 所述光纤基板用于固定第三光纤。
所述第一光纤分路器、 第二光纤分路器均由两根以上光纤进行侧面熔 接拉锥制成。
本发明的有益效果： 本发明背光模组及用该背光模组的液晶显示装 置， 采用太阳光作为背光源， 通过光纤分路器对太阳光进行分路， 使导光 板入光处的太阳光密集且均勾分布， 而长度较长的光纤用量较少， 既解决 了萤火虫效应问题， 使影像具有较高的色彩品质， 又减少了光纤的用量， 降低了成本， 还具有较窄的边框， 外形美观。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 1为现有采用太阳光作为背光源的背光模组的结构示意图； 图 2为现有采用太阳光作为背光源的液晶显示装置的结构示意图； 图 3为本发明背光模组一实施例的结构示意图；
图 4为本发明背光模组的的光路原理示意图；
图 5为本发明背光模组另一实施例的结构示意图；
图 6为本发明液晶显示装置的立体分解示意图。 具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
请参阅图 3及图 4, 本发明提供一种背光模组 20 , 包括： 集光器 2、 连接集光器 2的数条第一光纤 3、 连接第一光纤 3的数个第一光纤分路器 5、 连接第一光纤分路器 5的数条第二光纤 6、 及设于第二光纤 6—侧的导 光板 7 , 每一第一光纤分路器 5 包括一第一入光口 52及数个第一出光口 54, 所述第一入光口 52连接第一光纤 3 , 所述第一出光口 54连接第二光 纤 6, 集光器 2用于采集太阳光， 并将该太阳光由第一光纤 3传送至第一 光纤分路器 5 , 该第一光纤分路器 5将太阳光分成数个太阳光束， 该数个 太阳光束经由第二光纤 6传送至导光板 7内， 进而形成一光照均勾的背光 模组 20。
所述背光模组 20还包括背板 8、 及设于背板 8内的光纤基板 9 , 所述 背板 8包括底板 82及连接底板 82的侧板 84, 所述导光板 7包括底面 （未 图示） 、 相对底面的顶面 74及设于底面与顶面 74之间的数个侧面， 该数 个侧面包括至少一入光面 76, 所述光纤基板 9对应该入光面 76设于背板 8的侧板 84内侧。
在本实施例中， 所述光纤基板 9用于固定第二光纤 6, 优选的， 该光 纤基板 9上对应该数条第二光纤 6设有数个孔部 92 , 所述第二光纤 6容置 于该数个孔部 92内， 所述第二光纤 6的端面朝向导光板 7的入光面 76设 置， 集光器 2采集到的太阳光经由第一光纤 3传送至第一光纤分路器 5 , 该第一光纤分路器 5将太阳光分成数个太阳光束， 该数个太阳光束由该第 二光纤 6的端面射出， 由导光板 7的入光面 76进入导光板 7中， 进而提 供光照均匀的面光源。
所述第一光纤分路器 5 由两根以上光纤进行侧面熔接拉锥制成， 操作 简单方便， 成本低， 有效分离光束。
在本实施例中， 所述第一光纤 3 的长度可设置较长， 数量可相对较 少， 进而控制生产成本， 第二光纤 6 的长度可设置较短， 其数量可根据背 光模组 20 的亮度及光照均匀度的需求设定， 灵活多变， 实用性强， 且可 有效解萤火虫效应问题。
请参阅图 5 , 为本发明背光模组另一实施例的结构示意图， 在本实施 例中， 背光模组 20，还包括连接第二光纤 6远离第一光纤分路器 5端的数 个第二光纤分路器 10、 及连接第二光纤分路器 10的数个第三光纤 12, 每 一第二光纤分路器 10包括一第二入光口 102及数个第二出光口 104, 所述 第二入光口 102连接第二光纤 6, 所述第二出光口 104连接第三光纤 12, 所述导光板 7设于第三光纤 12远离第二光纤分路器 10的侧边。 所述第二 光纤分路器 10由两根以上光纤进行侧面熔接拉锥制成。
在本实施例中， 所述光纤基板 9用于固定第三光纤 12, 其结构及技术 效果与上述实施例相同， 在此不做赞述。
在本实施例中， 所述第一光纤 3 的长度可设置为最长， 数量相对最 少， 以控制生产成本， 第二光纤 6的长度较第一光纤 3的长度短， 数量相 对第一光纤 3 的数量多， 以提高分光效果， 进而提升本光模组 20，的光照 均匀度及消除萤火虫效应， 第三光纤 12 的长度设置为最短， 数量设置为 最多， 进一步提升背光模组 20，的光照均匀度及消除萤火虫效应。
请参阅图 6及图 3 , 本发明还提供一种液晶显示装置， 包括： 背光模 组 20、 设于背光模组 20上的胶框 40、 设于胶框 40上的液晶显示面板 60 及设于液晶显示面板 60上的前框 80, 所述背光模组 20 为液晶显示面板 60提供光照更好均匀的面光源， 以供液晶显示面板 60显示图像， 胶框 40 用于承载及保护液晶显示面板 60, 所述前框 80用于将液晶显示面板 60固 定于胶框 40内。
所述背光模组 20包括集光器 2、 连接集光器 2的数条第一光纤 3、 连 接第一光纤 3的数个第一光纤分路器 5、 连接第一光纤分路器 5的数条第 二光纤 6、 及设于第二光纤 6—侧的导光板 7 , 每一第一光纤分路器 5 包 括一第一入光口 52及数个第一出光口 54, 所述第一入光口 52连接第一光 纤 3 , 所述第一出光口 54连接第二光纤 6, 集光器 2用于采集太阳光， 并 将该太阳光由第一光纤 3 传送至第一光纤分路器 5 , 该第一光纤分路器 5 将太阳光分成数个太阳光束， 该数个太阳光束经由第二光纤 6传送至导光 板 7内， 进而形成一光照均匀的背光模组 20。
所述背光模组 20还包括背板 8、 及设于背板 8内的光纤基板 9 , 所述 背板 8包括底板 82及连接底板 82的侧板 84, 所述导光板 7包括底面、 相 对底面的顶面 74及设于底面与顶面 74之间的数个侧面， 该数个侧面包括 至少一入光面 76, 所述光纤基板 9对应该入光面 76设于背板 8的侧板 84 内侧。
在本实施例中， 所述光纤基板 9用于固定第二光纤 6, 优选的， 该光 纤基板 9上对应该数条第二光纤 6设有数个孔部 92 , 所述第二光纤 6容置 于该数个孔部 92内， 所述第二光纤 6的端面朝向导光板 7的入光面 76设 置， 集光器 2采集到的太阳光经由第一光纤 3传送至第一光纤分路器 5 , 该第一光纤分路器 5将太阳光分成数个太阳光束， 该数个太阳光束由该第 二光纤 6的端面射出， 由导光板 7的入光面 76进入导光板 7中， 进而提 供光照均匀的面光源。
所述第一光纤分路器 5 由两根或多根光纤进行侧面熔接拉锥制成， 操 作简单方便， 成本低， 有效分离光束。
在本实施例中， 所述第一光纤 3 的长度可设置较长， 数量可相对较 少， 进而控制生产成本， 第二光纤 6 的长度可设置较短， 其数量可根据背 光模组 20 的亮度及光照均匀度的需求设定， 灵活多变， 实用性强， 且可 有效解萤火虫效应问题。
综上所述， 本发明背光模组及用该背光模组的液晶显示装置， 采用太 阳光作为背光源， 通过光纤分路器对太阳光进行分路， 使导光板入光处的 太阳光密集且均匀分布， 而长度较长的光纤用量较少， 既解决了萤火虫效 应问题， 使影像具有较高的色彩品质， 又减少了光纤的用量， 降低了成 本， 还具有较窄的边框， 外形美观。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围

Claims

权 利 要 求
1、 一种背光模组， 包括： 集光器、 连接集光器的数条第一光纤、 连 接第一光纤的数个第一光纤分路器、 连接第一光纤分路器的数条第二光 纤、 及设于第二光纤一侧的导光板， 每一第一光纤分路器包括一第一入光 口及数个第一出光口， 所述第一入光口连接第一光纤， 所述第一出光口连 接第二光纤。
2、 如权利要求 1 所述的背光模组， 还包括连接第二光纤远离第一光 纤分路器端的数个第二光纤分路器、 及连接第二光纤分路器的数个第三光 纤， 每一第二光纤分路器包括一第二入光口及数个第二出光口， 所述第二 入光口连接第二光纤， 所述第二出光口连接第三光纤， 所述导光板设于第 三光纤远离第二光纤分路器的侧边。
3、 如权利要求 1 所述的背光模组， 还包括背板、 及设于背板内的光 纤基板， 所述背板包括底板及连接底板的侧板， 所述导光板包括底面、 相 对底面的顶面及设于底面与顶面之间的数个侧面， 该数个侧面包括至少一 入光面， 所述光纤基板对应该入光面设于背板的侧板内侧， 所述光纤基板 用于固定第二光纤。
4、 如权利要求 2 所述的背光模组， 还包括背板、 及设于背板内的光 纤基板， 所述背板包括底板及连接底板的侧板， 所述导光板包括底面、 相 对底面的顶面及设于底面与顶面之间的数个侧面， 该数个侧面包括至少一 入光面， 所述光纤基板对应该入光面设于背板的侧板内侧， 所述光纤基板 用于固定第三光纤。
5、 如权利要求 2 所述的背光模组， 其中， 所述第一光纤分路器、 第 二光纤分路器均由两根以上光纤进行侧面熔接拉锥制成。
6、 一种背光模组， 包括： 集光器、 连接集光器的数条第一光纤、 连 接第一光纤的数个第一光纤分路器、 连接第一光纤分路器的数条第二光 纤、 及设于第二光纤一侧的导光板， 每一第一光纤分路器包括一第一入光 口及数个第一出光口， 所述第一入光口连接第一光纤， 所述第一出光口连 接第二光纤；
还包括连接第二光纤远离第一光纤分路器端的数个第二光纤分路器、 及连接第二光纤分路器的数个第三光纤， 每一第二光纤分路器包括一第二 入光口及数个第二出光口， 所述第二入光口连接第二光纤， 所述第二出光 口连接第三光纤， 所述导光板设于第三光纤远离第二光纤分路器的侧边； 还包括背板、 及设于背板内的光纤基板， 所述背板包括底板及连接底 板的侧板， 所述导光板包括底面、 相对底面的顶面及设于底面与顶面之间 的数个侧面， 该数个侧面包括至少一入光面， 所述光纤基板对应该入光面 设于背板的侧板内侧， 所述光纤基板用于固定第三光纤；
其中， 所述第一光纤分路器、 第二光纤分路器均由两根以上光纤进行 侧面熔接拉锥制成。
7、 一种液晶显示装置， 包括： 背光模组、 设于背光模组上的胶框、 设于胶框上的液晶显示面板及设于液晶显示面板上的前框， 所述背光模组 包括集光器、 连接集光器的数条第一光纤、 连接第一光纤的数个第一光纤 分路器、 连接第一光纤分路器的数条第二光纤、 及设于第二光纤一侧的导 光板， 每一第一光纤分路器包括一第一入光口及数个第一出光口， 所述第 一入光口连接第一光纤， 所述第一出光口连接第二光纤。
8、 如权利要求 7 所述的液晶显示装置， 还包括连接第二光纤远离第 一光纤分路器端的数个第二光纤分路器、 及连接第二光纤分路器的数个第 三光纤， 每一第二光纤分路器包括一第二入光口及数个第二出光口， 所述 第二入光口连接第二光纤， 所述第二出光口连接第三光纤， 所述导光板设 于第三光纤远离第二光纤分路器的侧边。
9、 如权利要求 7 所述的液晶显示装置， 还包括背板、 及设于背板内 的光纤基板， 所述背板包括底板及连接底板的侧板， 所述导光板包括底 面、 相对底面的顶面及设于底面与顶面之间的数个侧面， 该数个侧面包括 至少一入光面， 所述光纤基板对应该入光面设于背板的侧板内侧， 所述光 纤基板用于固定第二光纤。
10、 如权利要求 8所述的液晶显示装置， 还包括背板、 及设于背板内 的光纤基板， 所述背板包括底板及连接底板的侧板， 所述导光板包括底 面、 相对底面的顶面及设于底面与顶面之间的数个侧面， 该数个侧面包括 至少一入光面， 所述光纤基板对应该入光面设于背板的侧板内侧， 所述光 纤基板用于固定第三光纤。
11、 如权利要求 8 所述的液晶显示装置， 其中， 所述第一光纤分路 器、 第二光纤分路器均由两根以上光纤进行侧面熔接拉锥制成。
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