WO2014169531A1 - 背光模组 - Google Patents

背光模组 Download PDF

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Publication number
WO2014169531A1
WO2014169531A1 PCT/CN2013/078316 CN2013078316W WO2014169531A1 WO 2014169531 A1 WO2014169531 A1 WO 2014169531A1 CN 2013078316 W CN2013078316 W CN 2013078316W WO 2014169531 A1 WO2014169531 A1 WO 2014169531A1
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WO
WIPO (PCT)
Prior art keywords
light
backlight module
optical fibers
guide plate
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/CN2013/078316
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English (en)
French (fr)
Inventor
宁超
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.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/001,877 priority Critical patent/US9329321B2/en
Publication of WO2014169531A1 publication Critical patent/WO2014169531A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/0013—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
    • 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
    • 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
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • 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
    • G02F1/133618—Illuminating devices for ambient light

Definitions

  • the invention relates to a backlight module, in particular to a fiber-optic backlight module using sunlight as a backlight.
  • the backlight of the existing TFT-LCD display system such as a common light-emitting diode or a fluorescent tube, mostly uses a power supply device such as a commercial power source or a battery as a driving unit, and has a large power consumption, which is disadvantageous for energy saving and environmental protection.
  • a backlight module that can use sunlight as an energy source is now available on the market, and the sunlight in the visible light band required for the backlight is collected by the light collecting system and introduced by the optical fiber.
  • the backlight module acts as a backlight.
  • a thick film is usually wrapped on the outer cable of the plurality of bare optical fibers.
  • the bare optical fibers in the optical cable need to be removed from the film and separated one by one, and dispersedly connected into the light guide plate, which greatly increases the number of the backlights.
  • the amount of labor for transportation and assembly since the bare fiber used for conducting sunlight is made of quartz and has poor flexibility, an extended back plate is usually required to carry and protect the bare fiber.
  • this will greatly increase the length of the backboard, which not only increases the weight of the backboard but also affects the appearance.
  • the ratio of the area of the display area of the liquid crystal display to the panel becomes smaller.
  • the technical problem to be solved by the present invention is to provide a solar backlight module which is more convenient in transportation and assembly, simple in structure, and advantageous in miniaturization, in view of the above-mentioned defects of the prior art solar backlight module.
  • a backlight module comprising a light collecting system, a light guiding plate and a plurality of optical fibers, wherein the light-input ends of the plurality of optical fibers are connected to the light collecting system,
  • the light collecting system receives sunlight
  • the backlight module further includes a fiber optic connector
  • the plurality of optical fibers are arranged in parallel on a surface of the light guide plate, and the light emitting ends of the plurality of optical fibers are The light-injecting end of the light guide plate is flush with the light-emitting end of the plurality of optical fibers and the light-incining end of the light guide plate, respectively, for exiting from the light-emitting end of the plurality of optical fibers.
  • Solar light is introduced into the light guide plate from the light incident end of the light guide plate.
  • the optical fiber connector is an isosceles right angle triangular prism, and a mirror surface of the right angle of the isosceles right angle prism is abutted with the light emitting end of the plurality of optical fibers and the light incident end of the light guide plate.
  • the light exiting direction of the light exiting ends of the plurality of optical fibers is perpendicular to a mirror surface of the right angle of the isosceles right angle prism.
  • the optical fiber connector is a semi-cylindrical lens, and a horizontal mirror surface of the semi-cylindrical lens abuts the light-emitting end of the plurality of optical fibers and the light-incident end of the light guide plate.
  • the light exiting direction of the light exiting ends of the plurality of optical fibers is perpendicular to the horizontal mirror surface of the semicylindrical lens.
  • the material of the optical fiber connector comprises at least one of glass, polymethyl methacrylate or engineering plastic, and the optical fiber connector has a refractive index of 1.4 to 1.6.
  • the optical fiber connector comprises two mutually perpendicular plane mirrors, wherein a mirror surface of one of the two plane mirrors abuts with a light emitting end of the plurality of optical fibers, and a mirror surface of the other chip and an light incident end of the light guide plate Abut.
  • the light exiting end of the plurality of optical fibers has a light exiting direction of 45° with the plane mirror.
  • the backlight module further includes an optical film laminated on another surface of the light guide plate opposite to a surface on which the plurality of optical fibers are arranged for adjusting the backlight mode The brightness and viewing angle of the group.
  • the plurality of optical fibers are bonded to each other.
  • the optical fiber can be arranged on the back surface of the light guide plate by adding the optical fiber connector, and the sunlight in the optical fiber can be directly introduced into the light guide plate through the optical fiber connector, without separating the bare optical fibers in the optical fiber, thereby neither It is necessary to increase the length of the backboard without reducing the area ratio of the display area.
  • the transportation and assembly of the backlight module are more convenient, the structure is simpler, and the appearance is more beautiful.
  • FIG. 1 is a schematic structural diagram of a backlight module according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of another direction of the backlight module of FIG. 1;
  • FIG. 3 is a schematic structural diagram of a backlight module according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural view of a backlight module according to Embodiment 3 of the present invention.
  • the backlight module of the present invention is an improvement of a fiber-optic backlight module that uses sunlight as a backlight.
  • the backlight module of the present invention includes a light collecting system, a light guide plate, a fiber connector, and a plurality of optical fibers, wherein The light collecting system is used for collecting and introducing sunlight into the optical fiber.
  • the plurality of optical fibers are arranged in parallel under the light guide plate.
  • the optical fiber connector changes the transmission direction of the sunlight from the plurality of optical fibers by 180 degrees, and then is introduced into the light guide plate.
  • the backlight module of the present invention can reduce the frame thickness and the back plate length of the backlight module, reduce the weight and cost of the backlight module, improve the shape of the backlight module, and reduce transmission loss.
  • a plurality of layers may be bonded to each other, and then the light beams bonded to each other are fixed under the light guide plate, which is convenient for transportation and facilitates assembly of the backlight module.
  • the backlight module 100 of the present invention includes an existing light collecting system (not shown) for collecting sunlight, a light guide plate 13, a fiber optic connector 12, and a plurality of optical fibers 11.
  • the plurality of optical fibers 11 are parallel and coplanar with each other, and are arranged side by side on the back surface of the light guide plate 13 (the lower surface of the light guide plate 13 in the figure), and the light exit end of each of the optical fibers 11 and the light incident end of the light guide plate 13 (in the figure)
  • the right end faces of the light guide plate 13 are parallel to each other and are coplanar (flat).
  • the optical fiber connector 12 in the present embodiment is an isosceles right angle triangular prism 12, and the upper half of the mirror surface opposite to the right angle abuts the light incident end of the light guide plate 13, and the lower half of the mirror surface opposite to the optical fiber 11 at right angles
  • the light-emitting end abuts for transmitting sunlight emitted from the light-emitting end of the optical fiber 11 through the light-input end of the light guide plate 13 into the light guide plate 13.
  • the light guide plate 13 is made of an acrylic plate, and the bottom surface of the acrylic plate is printed with a light guiding point by UV screen printing technology.
  • the materials used for printing have extremely high reflectivity and do not absorb light.
  • the acrylic sheet is used for sucking light from the light source so that the light stays on the surface of the acrylic sheet. When the light hits the respective light guiding points, the reflected light will diffuse to various angles, and the reflective condition is destroyed and then the light guide plate is removed. Shot from the front.
  • the light guide plate 13 can be uniformly illuminated by various light guiding points of different sizes and sizes.
  • At least one optical film 14 may be disposed on the light emitting surface of the light guide plate 13 (the upper surface of the light guide plate 13 in the drawing), and the optical film 14 is laminated. On the upper surface of the light guide plate 13.
  • the isosceles right-angled prism 12 is made of high refractive index glass, polymethyl methacrylate or engineering plastic, and the isosceles right angle triangular prism 12 has a refractive index ranging from 1.4 to 1.6, which can be reflected by the principle of reflection.
  • the sunlight is efficiently transmitted into the light guide plate 13, and the rib length of the isosceles right angle prism 13 is greater than or equal to the width of the light guide plate 13 to prevent light leakage.
  • the light collecting system concentrates and introduces the sunlight into the plurality of optical fibers 11.
  • the optical fiber 11 directly injects the transmitted sunlight into the right-angle mirror of the isosceles right-angled prism 12 (the mirror facing the right angle), etc.
  • the waist right angle triangular prism 12 further reflects the incident sunlight twice, and then transmits it to the light incident end of the light guide plate 13 in an approximately vertical direction.
  • the light guide plate 13 refracts the light source by the high light transmittance of the light guide point.
  • the light source is presented to the customer, and the optical film 14 is utilized to make the brightness of the backlight module 100 more uniform and the viewing angle more suitable.
  • FIG. 3 shows a backlight module 200 according to a second embodiment of the present invention.
  • the backlight module 200 of the present invention includes a light collecting system, a light guide plate 23, a fiber optic connector 22, and a plurality of optical fibers 21.
  • the light collecting system, the light guide plate 23 and the plurality of optical fibers 21 and the light collecting system, the light guide plate 13 and the plurality of optical fibers 11 of the backlight module 100 of the first embodiment are completely identical in their own features and assembly methods.
  • the optical fiber connector 22 in the present embodiment is a semi-cylindrical lens 22, and the upper half of the horizontal mirror surface abuts the light incident end of the light guide plate 23, and the lower half of the horizontal mirror surface abuts the light exit end of the optical fiber 21,
  • the sunlight for emitting the light from the light exit end of the optical fiber 21 is transmitted to the light guide plate 23 through the light incident end of the light guide plate 23 to prevent light leakage.
  • the specific structure of the light guide plate 23 is the same as that of the light guide plate 13 in the first embodiment, and in order to further improve the uniformity of the viewing angle and brightness of the backlight module 200, the light-emitting surface of the light guide plate 23 can be The upper surface) is provided with at least one optical film 24 identical to the optical film 14 of the above-described first embodiment, and the optical film 24 is laminated on the upper surface of the light guide plate 23.
  • the semi-cylindrical lens 22 is made of high refractive index glass, polymethyl methacrylate or engineering plastic, and the semi-cylindrical lens 22 has a refractive index ranging from 1.4 to 1.6, which can utilize the reflection principle.
  • the sunlight is efficiently transmitted into the light guide plate 23.
  • the specific optical path of the light in the semi-cylindrical lens 22 is shown in Fig. 3.
  • the length of the semi-cylindrical lens 22 is greater than or equal to the width of the light guide plate 23 to prevent light leakage.
  • the light collecting system concentrates the sunlight and introduces it into a plurality of optical fibers 21, and the optical fiber 21 transmits the transmitted sunlight to the horizontal mirror of the semi-cylindrical lens 22, and the semi-cylindrical lens 22 is incident.
  • the solar light is reflected twice, it is transmitted to the light incident end of the light guide plate 23 in an approximately vertical direction, and the light guide plate 23 uses the high light transmittance of the light guide point to refract the light into a surface light source and presents it to the customer, thereby utilizing the optical film.
  • the sheet 24 makes the brightness of the backlight module 200 more uniform and the viewing angle more suitable.
  • FIG. 4 shows a backlight module 300 according to a third embodiment of the present invention.
  • the backlight module 300 of the present invention includes a light collecting system, a light guide plate 33, a fiber optic connector 32, and a plurality of optical fibers 31.
  • the light collecting system, the light guide plate 33 and the plurality of optical fibers 31 and the light collecting system, the light guide plate 13 and the plurality of optical fibers 11 of the backlight module 100 of the first embodiment are completely identical in their own features and assembly methods.
  • the optical fiber connector 32 in this embodiment is a mirror group 32.
  • the mirror group 32 includes a plane mirror 321 and a plane mirror 322 at an angle of 90 degrees (perpendicular to each other).
  • the plane mirror 321 abuts the light-emitting end of the optical fiber 31, and the plane mirror 322 and The light incident end of the light guide plate 33 abuts, and the received sunlight is changed by 180 degrees by two reflections, and is used for transmitting the sunlight emitted from the light exit end of the optical fiber 31 through the light incident end of the light guide plate 33 to the guide.
  • the light panel 33 In the light panel 33.
  • the specific structure of the light guide plate 33 is the same as that of the light guide plate 13 in the first embodiment, and in order to further improve the uniformity of the viewing angle and brightness of the backlight module 300, the light-emitting surface of the light guide plate 33 can be The upper surface) is provided with at least one optical film 34 identical to the optical film 14 of the above-described first embodiment, and the optical film 34 is laminated on the upper surface of the light guide plate 33.
  • the mirror group 321 and the plane mirror 322 included in the mirror group 32 are hollow mirrors, which can totally reflect the light transmitted to the mirror surface, and the length of the mirror group 32 is greater than or equal to the width of the light guide plate 33 to prevent light leakage.
  • the light collecting system collects sunlight and introduces it into a plurality of optical fibers 31.
  • the optical fiber 31 transmits the transmitted sunlight to the plane mirror 321 at an angle of 45 degrees, and the plane mirror 321 reflects the light at a 45 degree angle.
  • the plane mirror 322 reflects the light to the light incident end of the light guide plate 33 at an angle of 45 degrees, and the light reflected to the light incident end of the light guide plate 33 is approximately perpendicular to the end surface of the light incident end, and the light guide plate 33 utilizes the light guide point.
  • the light transmittance is such that the light source is refracted into a surface light source and presented to the customer, and the optical film 34 is used to make the brightness of the backlight module 300 more uniform and the viewing angle more suitable.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

一种背光模组（100），包括光收集系统、导光板（13）和多根光纤（11），多根光纤（11）的入光端均连接到光收集系统，通过光收集系统接收太阳光。背光模组（100）还包括光纤连接器（12），多根光纤（11）平行地排列于导光板（13）的一表面上，多根光纤（11）的出光端均与导光板（13）的入光端平齐，光纤连接器（12）分别与多根光纤（11）的出光端和导光板（13）的入光端抵接，用于将从多根光纤（11）的出光端出射的太阳光从导光板（13）的入光端导入导光板（13）。背光模组（100）无需将光纤（11）中的裸光纤分开，进而既不需要增加背板长度，又不会缩小显示区的面积比例。同时使得背光模组（100）的运输及组装更加方便、结构更简单、外形更美观。

Description

背光模组 技术领域
本发明涉及一种背光模组，尤其涉及一种采用太阳光为背光源的光纤式背光模组。
背景技术
现有的TFT-LCD显示器系统的背光源，如常见的发光二极体或是荧光灯管，大都使用市电或电池等电源装置作为驱动单元，其功耗较大，不利于节能环保。
为了减少背光源对能源的消耗，现在市面上出现了一种可使用太阳光作为能源的背光模组，其将包含背光源所需的可见光波段的太阳光使用光收集系统收集起来，并用光纤导入背光模组作为背光源。但是，在对这类背光模组进行运输时，为了保证长距离传输的时候光纤不会被损坏，通常在多根裸光纤组成的光缆外面包裹一层较厚的胶片。但在安装这类背光模组时，为了将多根光纤导入背板，又需要将光缆中的裸光纤从胶片中拆出并一一分开，分散地接入导光板中，这样就大大增加了运输和组装的劳动量。另外，由于传导太阳光使用的裸光纤是石英材质的，柔韧性很不好，因此通常需要加长的背板，以承载和保护裸光纤。但这样会使得背板的长度大大增长，既加重了背板的重量又影响美观，同时由于背板面积增大，会导致液晶显示器的显示区相对于面板的面积比例会变小。
发明内容
本发明要解决的技术问题在于，针对现有技术的太阳能背光模组的上述缺陷，提供一种运输及组装更加方便，且结构简单、有利于小型化的太阳能背光模组。
本发明解决其技术问题所采用的技术方案是：一种背光模组，包括光收集系统、导光板和多根光纤，所述多根光纤的入光端均连接到所述光收集系统，通过所述光收集系统接收太阳光，所述背光模组还包括光纤连接器，所述多根光纤平行地排列于所述导光板的一表面上，所述多根光纤的出光端均与所述导光板的入光端平齐，所述光纤连接器分别与所述多根光纤的出光端和所述导光板的入光端抵接，用于将从所述多根光纤的出光端出射的太阳光从所述导光板的入光端导入所述导光板。
优选地，所述光纤连接器为等腰直角三棱镜，所述等腰直角三棱镜的直角所对的镜面与所述多根光纤的出光端和所述导光板的入光端抵接。
优选地，所述多根光纤的出光端的出光方向垂直于所述等腰直角三棱镜的直角所对的镜面。
优选地，所述光纤连接器为半圆柱形透镜，所述半圆柱形透镜的水平镜面与所述多根光纤的出光端和所述导光板的入光端抵接。
优选地，所述多根光纤的出光端的出光方向垂直于所述半圆柱形透镜的水平镜面。
优选地，所述光纤连接器的材料包含玻璃、聚甲基丙烯酸甲酯或工程塑胶中的至少一种，且所述光纤连接器的折射率为1.4至1.6。
优选地，所述光纤连接器包括两片相互垂直的平面镜，所述两片平面镜中一片的镜面和所述多根光纤的出光端抵接，另一片的镜面与所述导光板的入光端抵接。
优选地，所述多根光纤的出光端的出光方向与平面镜成45°。
优选地，所述背光模组还包括光学膜片，所述光学膜片层叠于所述导光板的与排列有所述多根光纤的表面相反的另一表面上，用于调节所述背光模组的亮度和视角。
优选地，所述多根光纤相互粘合在一起。
实施本发明的背光模组，通过增加光纤连接器可将光纤排列于导光板的背面，光纤中的太阳光可直接通过光纤连接器导入导光板，无需将光纤中的裸光纤分开，进而既不需要增加背板长度，又不会缩小显示区的面积比例。同时使得背光模组的运输及组装更加方便、结构更简单、外形更美观。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明实施例1提供的背光模组的结构示意图；
图2是图1中背光模组的另一方向的结构示意图；
图3是本发明实施例2提供的背光模组的结构示意图；
图4是本发明实施例3提供的背光模组的结构示意图。
具体实施方式
本发明的背光模组是针对一种将太阳光作为背光源的光纤式背光模组进行的改进，本发明的背光模组包括光收集系统、导光板、光纤连接器和多根光纤，其中，光收集系统用于将太阳光汇聚并导入光纤中，多根光纤平行横排在导光板下方，光纤连接器将来自多根光纤的太阳光的传输方向改变180度后，再导入导光板中，这样在节约能源的同时得到一种边框较窄的用太阳光作光源的背光模组，将光纤中的太阳光传输到导光板中时，无需将包装在一起的所有裸光纤一一分开再连接到导光板，进而无需将承载导光板的背板加长用以承载和保护裸光纤。进而使用本发明的背光模组可减小背光模组的边框厚度和背板长度、降低背光模组的重量和成本、改善背光模组的外形、降低传输损耗。
在本发明的优选实施例中，可以先将多根相互粘合在一起，然后将相互粘合在一起的光线固定到导光板下方，这样既方便运输，又方便组装背光模组。
图1-图2所示为本发明的第一实施方式的背光模组100。如图所示，本发明的背光模组100包括现有的用于收集阳光的光收集系统（图中未示出）、导光板13、光纤连接器12和多根光纤11。其中，多根光纤11彼此平行且共面，并排固定在导光板13的背面（图中为导光板13的下表面），每根光纤11的出光端与导光板13的入光端（图中为导光板13的右侧端面）均相互平行且共面（平齐）。本实施方式中的光纤连接器12为等腰直角三棱镜12，其直角所对的镜面的上半部分与导光板13的入光端抵接，其直角所对的镜面的下半部分与光纤11的出光端抵接，用于将从光纤11的出光端出射的太阳光通过导光板13的入光端传输到导光板13中。
在本实施方式中，导光板13采用压克力板材制造，该压克力板材底面有用UV网版印刷技术印上导光点。印刷使用的材料具有极高反射率且不吸光。该压克力板材用于吸取从光源出来的光，使得光在压克力板材表面停留，当光线射到各个导光点时，反射光会向各个角度扩散，破坏反射条件后再从导光板正面射出。通过各种疏密、大小不一的导光点，可使导光板13均匀发光。此外为了进一步改善背光模组100的视角和亮度的均匀度，可在导光板13的发光面（图中为导光板13的上表面）装设至少一片光学膜片14，该光学膜片14层叠在导光板13的上表面。
在本实施方式中，等腰直角三棱镜12的制作材料为高折射率的玻璃、聚甲基丙烯酸甲酯或工程塑胶，等腰直角三棱镜12的折射率范围为1.4至1.6，其利用反射原理可将太阳光高效地传输到导光板13中，等腰直角三棱镜12的棱长大于或等于导光板13的宽度，以防漏光。
具体实施过程中，光收集系统将太阳光汇聚并导入多根光纤11中，光纤11将其传输的太阳光近似垂直地入射到等腰直角三棱镜12的直角镜面（直角所对的镜面），等腰直角三棱镜12进而将入射的太阳光进行两次反射后，以近似垂直的方向传输到导光板13的入光端，导光板13利用导光点的高光线传导率，使光线光源折射成面光源呈现给客户，进而利用光学膜片14使背光模组100的亮度更均匀、视角更适宜。
图3所示为本发明的第二实施方式的背光模组200。如图所示，本发明的背光模组200包括光收集系统、导光板23、光纤连接器22和多根光纤21。其中，光收集系统、导光板23与多根光纤21与上述第一实施方式的背光模组100的光收集系统、导光板13与多根光纤11在自身特征和组装方式上都完全相同。本实施方式中的光纤连接器22为半圆柱形透镜22，其水平镜面的上半部分与导光板23的入光端抵接，其水平镜面的下半部分与光纤21的出光端抵接，用于将从光纤21的出光端出射的太阳光通过导光板23的入光端传输到导光板23中，以防止漏光。
在本实施方式中，导光板23的具体构造与第一实施方式中导光板13的构造相同，此外为了进一步改善背光模组200的视角和亮度的均匀度，可在导光板23的发光面（上表面）装设至少一片与上述第一实施方式中的光学膜片14相同的光学膜片24，该光学膜片24层叠在导光板23的上表面。
在本实施方式中，半圆柱形透镜22的制作材料为高折射率的玻璃、聚甲基丙烯酸甲酯或工程塑胶，半圆柱形透镜22的折射率范围为1.4至1.6，其利用反射原理可将太阳光高效地传输到导光板23中，光线在半圆柱形透镜22中的具体光路见图3，半圆柱形透镜22的长度大于或等于导光板23的宽度，以防漏光。
具体实施过程中，光收集系统将太阳光汇聚并导入多根光纤21中，光纤21将其传输的太阳光近似垂直入射到半圆柱形透镜22的水平镜面，半圆柱形透镜22进而将入射的太阳光进行两次反射后，以近似垂直的方向传输到导光板23的入光端，导光板23利用导光点的高光线传导率，使光线折射成面光源呈现给客户，进而利用光学膜片24使背光模组200的亮度更均匀、视角更适宜。
图4所示为本发明的第三实施方式的背光模组300。如图所示，本发明的背光模组300包括光收集系统、导光板33、光纤连接器32和多根光纤31。其中，光收集系统、导光板33与多根光纤31与上述第一实施方式的背光模组100的光收集系统、导光板13与多根光纤11在自身特征和组装方式上都完全相同。本实施方式中的光纤连接器32为一镜面组32，该镜面组32包括夹角成90度（相互垂直）的平面镜321和平面镜322，平面镜321与光纤31的出光端抵接，平面镜322与导光板33的入光端抵接，经两次反射将接收的太阳光方向改变180度，用于将从光纤31的出光端出射的太阳光通过导光板33的入光端反方向传输到导光板33中。
在本实施方式中，导光板33的具体构造与第一实施方式中导光板13的构造相同，此外为了进一步改善背光模组300的视角和亮度的均匀度，可在导光板33的发光面（上表面）装设至少一片与上述第一实施方式中的光学膜片14相同的光学膜片34，，该光学膜片34层叠在导光板33的上表面。
在本实施方式中，镜面组32包括的平面镜321和平面镜322为空心的镜面，能将传输到镜面上的光全反射，镜面组32的长度大于或等于导光板33的宽度，以防漏光。
具体实施过程中，光收集系统将太阳光汇聚并导入多根光纤31中，光纤31将其传输的太阳光以45度角入射到平面镜321上，平面镜321上再将光线以45度角反射到平面镜322上，平面镜322将光线以45度角反射到导光板33的入光端，反射到导光板33的入光端的光线与该入光端的端面近似垂直，导光板33利用导光点的高光线传导率，使光线光源折射成面光源呈现给客户，进而利用光学膜片34使背光模组300的亮度更均匀、视角更适宜。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。

Claims (11)

  1. 一种背光模组，包括光收集系统、导光板和多根光纤，所述多根光纤的入光端均连接到所述光收集系统，通过所述光收集系统接收太阳光，其中，所述背光模组还包括光纤连接器，所述多根光纤平行地排列于所述导光板的一表面上，所述多根光纤的出光端均与所述导光板的入光端平齐，所述光纤连接器分别与所述多根光纤的出光端和所述导光板的入光端抵接，用于将从所述多根光纤的出光端出射的太阳光从所述导光板的入光端导入所述导光板。
  2. 根据权利要求1所述的背光模组，其中，所述光纤连接器为等腰直角三棱镜，所述等腰直角三棱镜的直角所对的镜面与所述多根光纤的出光端和所述导光板的入光端抵接。
  3. 根据权利要求2所述的背光模组，其中，所述多根光纤的出光端的出光方向垂直于所述等腰直角三棱镜的直角所对的镜面。
  4. 根据权利要求1所述的背光模组，其中，所述光纤连接器为半圆柱形透镜，所述半圆柱形透镜的水平镜面与所述多根光纤的出光端和所述导光板的入光端抵接。
  5. 根据权利要求4所述的背光模组，其中，所述多根光纤的出光端的出光方向垂直于所述半圆柱形透镜的水平镜面。
  6. 根据权利要求2所述的背光模组，其中，所述光纤连接器的材料包含玻璃、聚甲基丙烯酸甲酯或工程塑胶中的至少一种，且所述光纤连接器的折射率为1.4至1.6。
  7. 根据权利要求4所述的背光模组，其中，所述光纤连接器的材料包含玻璃、聚甲基丙烯酸甲酯或工程塑胶中的至少一种，且所述光纤连接器的折射率为1.4至1.6。
  8. 根据权利要求1所述的背光模组，其中，所述光纤连接器包括两片相互垂直的平面镜，所述两片平面镜中一片的镜面和所述多根光纤的出光端抵接，另一片的镜面与所述导光板的入光端抵接。
  9. 根据权利要求8所述的背光模组，其中，所述多根光纤的出光端的出光方向与平面镜成45°。
  10. 根据权利要求1所述的背光模组，其中，所述背光模组还包括光学膜片，所述光学膜片层叠于所述导光板的与排列有所述多根光纤的表面相反的另一表面上，用于调节所述背光模组的亮度和视角。
  11. 根据权利要求1所述的背光模组，其中，所述多根光纤相互粘合在一起。
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