WO2016141599A1 - 一种背光模组及其灯条 - Google Patents

一种背光模组及其灯条 Download PDF

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Publication number
WO2016141599A1
WO2016141599A1 PCT/CN2015/074386 CN2015074386W WO2016141599A1 WO 2016141599 A1 WO2016141599 A1 WO 2016141599A1 CN 2015074386 W CN2015074386 W CN 2015074386W WO 2016141599 A1 WO2016141599 A1 WO 2016141599A1
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WO
WIPO (PCT)
Prior art keywords
light
substrate
rows
backlight module
adjacent
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PCT/CN2015/074386
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English (en)
French (fr)
Inventor
陈仕祥
阙成文
李德华
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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 US14/765,902 priority Critical patent/US9519097B2/en
Publication of WO2016141599A1 publication Critical patent/WO2016141599A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
    • 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
    • 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
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—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
    • 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 invention belongs to the technical field of liquid crystal display, in particular to an ultra-thin backlight module and a light bar thereof.
  • QD Quantum Dots
  • QD Tube quantum tube
  • the present invention provides a light bar, and a backlight module manufactured by using the light bar, by arranging the double-row LED lamp inwardly to converge the light emitted by the LED lamp to increase the light intensity.
  • the light bar comprises a substrate, and a plurality of rows of light-emitting members arranged side by side on the substrate, the light-emitting members between two adjacent rows having adjacent ends, the ends being inclined toward the inner side of the substrate at the same time,
  • the adjacent two rows of illuminating members are formed at an angle to obtain the condensed light of the adjacent two rows of illuminating members.
  • the included angle is 90 to 150°.
  • the substrate has a M-shaped cross section.
  • a connecting surface of the substrate and the light emitting member is curved.
  • the light emitting member includes a base and an LED lamp mounted on the base.
  • the present invention also provides a backlight module, including a light guide plate, a plastic frame, and a back plate disposed on the periphery of the light guide plate and the plastic frame, and further comprising a back plate corresponding to the light incident surface of the light guide plate.
  • a backlight module including a light guide plate, a plastic frame, and a back plate disposed on the periphery of the light guide plate and the plastic frame, and further comprising a back plate corresponding to the light incident surface of the light guide plate.
  • a light bar, and a quantum tube disposed between the light bar and the light guide plate,
  • the illuminating member between the adjacent two rows has an adjacent end portion, and the end portion is inclined toward the inner direction of the substrate at the same time, so that adjacent two rows of illuminating members form an angle, and the emitted light of the adjacent two rows of illuminating members is concentrated. .
  • the adjacent two rows of LED lights have an angle of 90 to 150 degrees.
  • the substrate has a M-shaped cross section.
  • a connecting surface of the substrate and the light emitting member is curved.
  • the light emitting member includes a base and an LED lamp mounted on the base.
  • the substrate is integrally formed with the back sheet.
  • the invention obtains an LED light bar in which the emitted light converges by adjusting the relative positions of the two rows of LED lights in the existing LED light bar.
  • the light bar is applied to the backlight module, so that the light emitted by the LED lamp is concentrated and then enters the light guide plate through the quantum tube, thereby improving the coupling efficiency of the backlight module. While ensuring the high color and high saturation of the backlight module, the thickness of the light guide plate is reduced, the production cost is reduced, and the requirement for the development of the liquid crystal display to be light and thin is satisfied.
  • FIG. 1 is a schematic structural view of a conventional backlight module.
  • FIG. 2 is a schematic structural view of a light bar according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of still another backlight module according to an embodiment of the present invention.
  • the present invention provides a light bar 10 comprising a substrate 11 and a plurality of rows of light emitting members 12 juxtaposed on the substrate 11.
  • the light-emitting member 12 of the present embodiment is arranged in parallel on the substrate 11 in two rows.
  • the illuminating member 12 between adjacent two rows has adjacent ends, for example, the first row of illuminating members 12 has a first end 12a near the adjacent row of illuminating members 121, and the illuminating member 122 of the second row is close to the first Line illumination
  • the member 121 has a second end 12b adjacent to the second end 12b.
  • first end 12a and the second end 12b are simultaneously inclined toward the inner direction of the substrate 11, so that the adjacent two rows of the light-emitting members 12 are inclined to form an angle ⁇ , and the two adjacent rows of the light-emitting members 121 and 122 are obtained.
  • the light converges.
  • the angle between the two illuminating members 121 and 122 is 90 to 150°, and is preferably 120° in this embodiment.
  • the substrate 11 of the present embodiment has an M-shaped cross section, and the two rows of light-emitting members 121 and 122 are respectively disposed on the two raised shoulder portions 11a of the substrate 11.
  • Each of the illuminating members 121 and 122 includes a pedestal 123 and an LED lamp 124 mounted on the pedestal 123.
  • the pedestal 123 may be a PCB board that is mounted on the shoulder 11a of the substrate 11 through a PCB board.
  • the substrate may be designed such that the connection surface of the substrate and the light-emitting member is curved or other configuration (not shown) recessed toward the inside of the substrate, so that the connection is installed.
  • the illuminating members on the face form an angle, which can also achieve the object of the present invention.
  • the illuminating member may also be mounted directly on the shoulder of the substrate only with the structure of the LED lamp.
  • the substrate may be a PCB board having the above-described shape.
  • a backlight module is also provided.
  • the backlight module includes a light guide plate 20, a plastic frame 30, and a periphery of the light guide plate 20 and the plastic frame 30.
  • the backplane 40 further includes a light bar 10 mounted on the back plate 40 corresponding to the light incident surface of the light guide plate 20, and a quantum tube 50 disposed between the light bar 10 and the light guide plate 20 .
  • the light bar 10 can be bonded to the back plate 40 corresponding to the light incident side of the light guide plate 20 (see FIG. 3), or the substrate and the back plate 40 of the light bar 10 can be as shown in FIG.
  • the integral molding makes it possible to achieve the object of the present invention by having the configuration of the above-described substrate at a position where the backing plate 40 is mounted corresponding to the light bar 10.
  • the two rows of LED light wires have a certain exit angle, and finally converge in the quantum tube 50, and then enter the light guide plate 20 to form a uniform surface light source. That is, the width of the LED lamp itself is still D, the width between the LED lamps is still W, and the angle formed by the light-emitting surfaces of the two rows of LED lamps is ⁇ , which can be calculated, and the two rows of LED lamps are at the light-emitting surface.
  • the height 2Dcos( ⁇ /2)+W; since the light converges and then enters the quantum tube 50, and further narrows the height of the light-emitting surface, the thickness H' of the light-incident surface from the light guide plate 20 is actually less than 2Dcos. ( ⁇ /2)+W. It can be seen that the thickness of the improved light guide plate is greatly reduced (H' ⁇ H), and the quantum tube is also lighter and thinner than the prior art. Therefore, the improvement of the invention can not only obtain the technical effect of ensuring high color and high saturation, but also improve the dipole efficiency of the backlight module, reduce the thickness of the light guide plate and the quantum tube, greatly reduce the material cost, and satisfy the backlight module. Lighter and thinner needs.

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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

一种灯条（10）及应用这种灯条的背光模组，所述灯条（10）包括基板（11）以及并列设置于所述基板（11）上的若干行发光件（12），相邻两行之间的发光件（121、122）具有毗邻端部（12a、12b），所述端部（12a、12b）同时往所述基板（11）内部方向倾侧，使相邻两行发光件（121、122）形成一夹角，获得相邻两行发光件（121、122）的出射光会聚。采用这种灯条（10）组装的背光模组，使得LED灯（124）出射光线会聚后通过量子管（50）进入导光板（20），提高了背光模组的耦光效率。在保证了该背光模组高色彩高饱和度的同时，减薄了导光板（20）的厚度，降低生产成本，并满足了液晶显示器向轻薄化发展的要求。

Description

一种背光模组及其灯条 技术领域
本发明属于液晶显示技术领域，尤其是一种超薄型的背光模组及其的灯条。
背景技术
QD(Quantum Dots)作为高色域背光技术之一，其主要结构为在蓝光LED前面设置一根量子管(QD Tube)，当蓝光进入量子管后激发其内部所封装的量子点产生红光和绿光，从而加上原有的部分蓝光混合成具备高色彩和高饱和度的白光进入到导光板中，从而为液晶显示器提供更高色彩饱和度的光线，提供了显示器对色彩的表现能力。然而因为量子管m对光线的损耗较大，故此现有技术采取双排LED灯n1、n2设计，意在通过增加灯的数量增加光通量。结合图1所示，设一个LED灯n1的垂直宽度为D，两个LED灯n1、n2设之间的距离为W，则，导光板L的厚度H至少需要H＝2D+W。可见，这种双排LED灯的设计需要匹配更厚的导光板、量子管，不仅增加背光模组的重量、厚度，还造成制作材料增加、成本上升等问题，不适应于目前液晶显示器轻薄化的发展趋势。
发明内容
为解决上述问题，本发明提供一种灯条，以及采用这种灯条制作的背光模组，通过使双排LED灯向内倾侧设置，使LED灯出射光会聚，达到增加光强度。
这一种灯条，包括基板，以及并列设置于所述基板上的若干行发光件，相邻两行之间的发光件具有毗邻端部，所述端部同时往所述基板内部方向倾侧，使相邻两行发光件形成一夹角，获得相邻两行发光件的出射光会聚。
进一步地，所述夹角为90～150°。
进一步地，所述基板横截面呈M型。
进一步地，所述基板与所述发光件的连接面呈弧形。
进一步地，所述发光件包括基座以及装设于所述基座上的LED灯。
本发明还提供一种背光模组，包括导光板，胶框以及设置于所述导光板、胶框外围的背板，还包括安装于所述背板上与所述导光板入光面对应的灯条，以及设置于所述灯条及所述导光板之间的量子管，
相邻两行之间的发光件具有毗邻端部，所述端部同时往所述基板内部方向倾侧，使相邻两行发光件形成一夹角，获得相邻两行发光件的出射光会聚。
进一步地，所述相邻两行LED灯夹角为90～150°。
进一步地，所述基板横截面呈M型。
进一步地，所述基板与所述发光件的连接面呈弧形。
进一步地，所述发光件包括基座以及装设于所述基座上的LED灯。
进一步地，所述基板与所述背板一体成型。
有益效果：
本发明通过调整现有LED灯条中两排LED灯的相对位置，获得出射光线会聚的LED灯条。并将该灯条应用于背光模组当中，使得LED灯出射光线会聚后通过量子管进入导光板，提高了背光模组的耦光效率。在保证了该背光模组高色彩高饱和度的同时，减薄了导光板的厚度，降低生产成本，并满足了液晶显示器向轻薄化发展的要求。
附图说明
图1为现有的背光模组结构示意图。
图2为本发明实施例的灯条结构示意图。
图3为本发明实施例的背光模组结构示意图。
图4为本发明实施例的又一背光模组结构示意图。
具体实施方式
下面，将结合附图对本发明实施例作详细说明。
如图2所示，本发明提供一种灯条10，包括基板11以及并列设置于所述基板11上的若干行发光件12。本实施例的发光件12在基板11呈上下两行平行排列。相邻两行之间的发光件12具有毗邻的端部，具体例如为：第一行发光件12靠近邻行发光件121处具有第一端12a，第二行的发光件122在靠近第一行发光 件121处具有第二端12b，所述第一端12a与所述第二端12b上下相毗邻。且，所述第一端12a和第二端12b同时往所述基板11内部方向倾侧，使相邻两行发光件12倾侧形成一夹角θ，获得相邻两行发光件121、122的出射光会聚。其中，两发光件121、122的夹角为90～150°，本实施例中优选为120°。
优选地，本实施例的基板11的横截面呈现M型，两排发光件121、122分别设置在基板11两凸起的肩部11a。其中，每个发光件121、122均包括基座123以及装设于所述基座123上的LED灯124。,基座123可以为PCB板，该LED灯124通过PCB板安装在基板11的肩部11a上。
当然，基板除了上述构型之外，还可以将所述基板与所述发光件的连接面设计为向基板内部凹陷的弧形或其他构型(图中未示出)，使得安装于该连接面上的发光件形成夹角，同样能达到本发明目的。
在其他优选结构中，发光件也可以只有LED灯的结构直接安装在基板的肩部上。此时，基板可为具有上述造型的PCB板。
本实施例还提供采用这种灯条制作的背光模组，如图3所示，这种背光模组，包括导光板20，胶框30以及设置于所述导光板20、胶框30外围的背板40，还包括安装于所述背板40上与所述导光板20入光面对应的灯条10，以及设置于所述灯条10及所述导光板20之间的量子管50。实际使用时，灯条10可以粘接于与导光板20入光侧对应的背板40上(参见图3所示)，也可以如图4所示，将灯条10的基板与背板40一体成型，使得在背板40对应灯条10安装的位置具有上述基板的构造，同样能实现本发明目的。
以图4为例，通过对灯条结构的调整，使得两排LED灯光线具有一定的出射角度，并最终在量子管50内会聚，再进入导光板20形成均匀面光源。即，LED灯自身的宽度不变仍为D，LED灯之间的宽度不变仍为W，两排LED灯出光面形成的夹角为θ，可以计算得到，两排LED灯在出光面处的高度＝2Dcos(θ/2)+W；由于光线出射后会聚再进入量子管50，又进一步缩窄了出光面的高度，则实际上从导光板20入光面的厚度H’显然小于2Dcos(θ/2)+W。可见，改进后的导光板厚度大大缩小(H’<H)，量子管也比现有技术更轻薄。因此，通过本发明的改进不仅能获得保证高色彩高饱和度的技术效果，还能提高背光模组的偶光效率，减薄导光板和量子管的厚度，大大降低材料成本，满足背光模组更轻更薄的需要。
尽管已经参照其示例性实施例具体显示和描述了本发明，但是本领域的技术人员应该理解，在不脱离权利要求所限定的本发明的精神和范围的情况下，可以对其进行形式和细节上的各种改变。

Claims (10)

  1. 一种灯条，包括基板，以及并列设置于所述基板上的若干行发光件，其中，
    相邻两行之间的发光件具有毗邻端部，所述端部同时往所述基板内部方向倾侧，使相邻两行发光件形成一夹角，获得相邻两行发光件的出射光会聚。
  2. 根据权利要求1所述的灯条，其中，所述夹角为90～150°。
  3. 根据权利要求1所述的灯条，其中，所述基板横截面呈M型。
  4. 根据权利要求3所述的灯条，其中，所述基板与所述发光件的连接面呈弧形。
  5. 根据权利要求3所述的灯条，其中，所述发光件包括基座以及装设于所述基座上的LED灯。
  6. 一种背光模组，包括导光板，胶框以及设置于所述导光板、胶框外围的背板，还包括安装于所述背板上与所述导光板入光面对应的灯条，以及设置于所述灯条及所述导光板之间的量子管，其中：
    相邻两行之间的发光件具有毗邻端部，所述端部同时往所述基板内部方向倾侧，使相邻两行发光件形成一夹角，获得相邻两行发光件的出射光会聚。
  7. 根据权利要求6所述的背光模组，其中，所述相邻两行LED灯夹角为90～150°。
  8. 根据权利要求6所述的背光模组，其中，所述基板横截面呈M型。
  9. 根据权利要求8所述的背光模组，其中，所述基板与所述发光件的连接面呈弧形。
  10. 根据权利要求6所述的背光模组，其中，所述发光件包括基座以及装设于所述基座上的LED灯；所述基板与所述背板一体成型。
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