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WO2014082330A1 - 导光板翘曲缓冲结构和背光模组 - Google Patents

导光板翘曲缓冲结构和背光模组 Download PDF

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Publication number
WO2014082330A1
WO2014082330A1 PCT/CN2012/086103 CN2012086103W WO2014082330A1 WO 2014082330 A1 WO2014082330 A1 WO 2014082330A1 CN 2012086103 W CN2012086103 W CN 2012086103W WO 2014082330 A1 WO2014082330 A1 WO 2014082330A1
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WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
inclined surface
warpage
backlight module
Prior art date
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Ceased
Application number
PCT/CN2012/086103
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English (en)
French (fr)
Inventor
萧宇均
陈伟丰
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
Original Assignee
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 US13/810,211 priority Critical patent/US8882331B2/en
Publication of WO2014082330A1 publication Critical patent/WO2014082330A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/0081—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
    • G02B6/0093—Means for protecting 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
    • G02B6/0081—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
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a light guide plate warpage buffer structure and a backlight module.
  • the light is refracted into a uniform surface light source by using the high light transmittance of the light guide plate.
  • the commonly used light guide plate adopts optical grade acrylic (PMMA)/PC as the substrate, and is fixed on the back panel of the liquid crystal display by the riveting column.
  • PMMA optical grade acrylic
  • the light guide plate is close to the end of the light source. Because the light source is heated for a long time, the light guide plate is easily heated. The expansion phenomenon causes the light guide plate to warp, thereby affecting the visual effect.
  • the main object of the present invention is to provide a light guide plate warpage buffer structure and a backlight module, which can effectively reduce the degree of warpage of the light guide plate due to thermal expansion.
  • the invention provides a light guide plate warpage buffer structure, comprising a first member and a second member, one side of the first member is in contact with one end of the light guide plate of the backlight module, and one side of the second member is opposite to the backlight module
  • the back side wall of the group is movably connected, the second member slides along the extending direction of the side wall of the back board; and the first side surface of the first member away from the side of the light guide plate is provided with a first inclined surface, A second inclined surface is disposed on an end surface of the second member away from the side wall of the backboard, and the first inclined surface contacts the second inclined surface and cooperates to slide.
  • an angle between the first inclined surface and a vertical surface of the first member near an end of the bottom surface of the back plate is greater than 180 degrees and less than 270 degrees, and the second inclined surface is close to the second member
  • the angle between the vertical faces of one end of the bottom surface of the plate is greater than 90 degrees and less than 180 degrees.
  • the first inclined surface is complementary to the inclined angle of the second inclined surface.
  • the second member is movably coupled to the side wall of the backing plate via a dovetail structure.
  • the second member is movably coupled to the side wall of the backing plate via a screw and a sliding groove.
  • the invention also provides a light guide plate warpage buffer structure, comprising a first member and a second member, one side of the first member is in contact with one end of the light guide plate of the backlight module, and one side of the second member is backlit
  • the back side wall of the module is movably connected, the second member slides along the extending direction of the side wall of the backboard; and the first inclined surface is disposed on the end surface of the first member away from the side of the light guide plate.
  • a second inclined surface is disposed on an end surface of the second member away from the side wall of the backboard, and the first inclined surface contacts and slides with the second inclined surface, and the first member is along the direction of the light guide plate
  • a bent portion is extended, and the bent portion is in contact with an upper end surface of the light guide plate toward a side of the light guide plate.
  • an angle between the first inclined surface and a vertical surface of the first member near an end of the bottom surface of the back plate is greater than 180 degrees and less than 270 degrees, and the second inclined surface is close to the second member
  • the angle between the vertical faces of one end of the bottom surface of the plate is greater than 90 degrees and less than 180 degrees.
  • the first inclined surface is complementary to the inclined angle of the second inclined surface.
  • the second member is movably coupled to the side wall of the backing plate via a dovetail structure.
  • the second member is movably coupled to the side wall of the backing plate via a screw and a sliding groove.
  • the present invention also provides a backlight module including a light guide plate and a back plate, and a light guide plate warpage buffer structure, the light guide plate warpage buffer structure including a first member and a second member, and a first member
  • the side is in contact with one end of the light guide plate of the backlight module, one side of the second member is movably connected to the side wall of the backlight module, and the second member slides along the extending direction of the side wall of the back plate;
  • a first inclined surface is disposed on an end surface of the first member away from the side of the light guide plate, and a second inclined surface is disposed on an end surface of the second member away from the side wall of the back plate, the first inclined surface and the first inclined surface
  • the second inclined surface contacts and slides in cooperation.
  • an angle between the first inclined surface and a vertical surface of the first member near an end of the bottom surface of the back plate is greater than 180 degrees and less than 270 degrees, and the second inclined surface is close to the second member
  • the angle between the vertical faces of one end of the bottom surface of the plate is greater than 90 degrees and less than 180 degrees.
  • the first inclined surface is complementary to the inclined angle of the second inclined surface.
  • the second member is movably coupled to the side wall of the backing plate via a dovetail structure.
  • the second member is movably coupled to the side wall of the backing plate via a screw and a sliding groove.
  • the first member extends along a direction of the light guide plate to form a bent portion, and the bent portion is in contact with an upper end surface of the light guide plate toward a side of the light guide plate.
  • the invention adopts a light-guiding plate warping buffer structure, which effectively reduces the degree of warpage of the light guide plate due to thermal expansion, and adopts a tilt angle self-locking structure to ensure that the entire light guide plate warpage buffer structure is stable and not easy to fall off, and the light guide plate is extended. And the life of the backlight module.
  • FIG. 1 is a schematic structural view of a first embodiment of a warpage buffer structure of a light guide plate according to the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of a light-guiding plate warpage buffer structure of the present invention.
  • FIG. 1 is a schematic structural view of a first embodiment of a light guide plate warpage buffer structure according to the present invention.
  • the light guide plate warpage buffer structure provided in the embodiment includes a first member 111 and a second member 112.
  • One side of the member 111 is in contact with one end of the light guide plate 120 of the backlight module, and one side of the second member 112 is movably connected to the back side wall 131 of the backlight module.
  • the screw 151 can be used to cooperate with the sliding groove 152.
  • the second member 112 is movably coupled to the back side wall 131 or is movably coupled by a dovetail structure such that the second member 112 can slide along the extending direction of the back side wall 131.
  • a first inclined surface 141 is disposed on an end surface of the first member 111 away from the light guide plate 120, and a second inclined surface 142 is disposed on an end surface of the second member 112 away from the side surface of the backing plate 131.
  • the first inclined surface 141 and the first inclined surface 141 The angle ⁇ between the vertical faces 161 of one member 111 near one end of the back plate bottom surface 132 is greater than 180 degrees and less than 270 degrees, and the second inclined surface 142 is adjacent to the vertical surface 162 of the second member 112 near one end of the back plate bottom surface 132.
  • the angle ⁇ between the first slope 141 and the second slope 142 is designed to be complementary, and the first slope 141 is in contact with the second slope 142 and cooperates to slide.
  • the light guide plate 120 When the light guide plate 120 is thermally expanded, the light guide plate 120 abuts against the first member 111, and the first member 111 applies a horizontal force to the second member 142, while the first member 111 also applies a second member 142 to the second member 142 due to the action of the slope.
  • the second member 142 moves vertically upward along the extending direction of the back plate sidewall 131, and the light guide plate 120 is thermally expanded.
  • the degree of warpage of the light guide plate 120 is reduced, and the service life of the light guide plate 210 is effectively extended.
  • the first member 111 is vertical The straight direction is locked, and the light guide plate 120 and the second member 142 are not separated by the expansion or contraction of the light guide plate 120, thereby ensuring that the entire light guide plate warp buffer structure is stable and not easy to fall off.
  • FIG. 2 is a schematic structural view of a second embodiment of a light-guiding plate warpage buffer structure according to the present invention.
  • the difference between the embodiment and the embodiment shown in FIG. 1 is that the first member 211 extends along the direction of the light guide plate 220.
  • a bent portion 230, the bent portion 230 is in contact with the upper end surface of the light guide plate 220 toward the side of the light guide plate 220.
  • the first member 211 applies a horizontal component and a vertical component to the second member 212 through the first slope 241, and simultaneously guides The upper end surface of the light plate 220 abuts against the bent portion 230 to provide a vertical component of the bending portion 230.
  • the vertical component of the bending portion 230 is applied to the second member 212 through the first inclined surface 241.
  • the second member 212 is pushed upward to further prevent the light guide plate 220 from being crushed and deformed when it is thermally expanded, thereby reducing the degree of warpage of the light guide plate 220 and effectively extending the service life of the light guide plate 220.
  • the embodiment of the invention further provides a backlight module, comprising a light guide plate, a back plate and a light guide plate warping buffer structure, wherein the light guide plate warpage buffer structure comprises a first member and a second member, and one side of the first member is The light guide plate of the backlight module is in contact with one end, one side of the second member is movably connected to the side wall of the back panel of the backlight module, and the second member slides along the extending direction of the side wall of the back plate; the side of the first member away from the side of the light guide plate A first inclined surface is disposed on the end surface, and a second inclined surface is disposed on the end surface of the second member away from the side wall of the back plate, and the first inclined surface contacts the second inclined surface and cooperates to slide.
  • the light guide plate warpage buffer structure comprises a first member and a second member, and one side of the first member is The light guide plate of the backlight module is in contact with one end, one side of the second member is movably connected to the side
  • the light guide plate warping buffer structure in the backlight module of the present embodiment may include all the technical solutions in the embodiment shown in FIG. 1 and FIG. 2 .
  • the backlight module of the present invention can effectively reduce the degree of warpage caused by thermal expansion of the light guide plate of the backlight module relative to the conventional backlight module. Extends the life of the backlight module.

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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

公开了一种导光板（120，220）翘曲缓冲结构和背光模组，导光板（120，220）翘曲缓冲结构包括第一构件（111，211）和第二构件（112，212），第一构件（111，211）的一侧与背光模组的导光板（120，220）一端接触，第二构件（112，212）的一侧与背光模组的背板侧壁（131）活动连接，第二构件（112，212）沿背板侧壁（131）的延伸方向滑动；第一构件（111，211）远离导光板（120，220）的一侧的端面上设有第一斜面（141，241），第二构件（112，212）远离背板侧壁（131）的一侧的端面上设有第二斜面（142），第一斜面（141，241）与第二斜面（142）接触且配合滑动。导光板（120，220）翘曲缓冲结构有效减小了导光板（120，220）因受热膨胀造成的翘曲程度，且采用倾斜角自锁结构，确保了整个导光板（120，220）翘曲缓冲结构稳定不易脱落，延长了导光板（120，220）和背光模组的使用寿命。

Description

导光板翘曲缓冲结构和背光模组
技术领域
本发明涉及液晶显示器技术领域，特别涉及一种导光板翘曲缓冲结构和背光模组。
背景技术
在液晶显示器的背光模组中，特别是侧入式背光模组，利用导光板的高光线传导率，将光线折射成均匀的面光源。常用的导光板采用光学级压克力(PMMA)/PC为基材，采用铆柱固定在液晶显示器背板上，在导光板靠近发光源一端，由于光源长时间使用发热，容易使导光板受热产生膨胀现象，导致导光板发生翘曲现象，从而影响视觉效果。
发明内容
本发明的主要目的为提供一种导光板翘曲缓冲结构和背光模组，能有效减轻导光板因受热膨胀产生翘曲的程度。
本发明提出一种导光板翘曲缓冲结构，包括第一构件和第二构件，所述第一构件的一侧与背光模组的导光板一端接触，所述第二构件的一侧与背光模组的背板侧壁活动连接，所述第二构件沿所述背板侧壁的延伸方向滑动；所述第一构件远离所述导光板的一侧的端面上设有第一斜面，所述第二构件远离所述背板侧壁的一侧的端面上设有第二斜面，所述第一斜面与所述第二斜面接触且配合滑动。
优选地，所述第一斜面与所述第一构件靠近背板底面的一端的竖直面之间的夹角大于180度且小于270度，所述第二斜面与所述第二构件靠近背板底面的一端的竖直面之间的夹角大于90度且小于180度。
优选地，所述第一斜面与所述第二斜面的倾斜角度互补。
优选地，所述第二构件经燕尾槽结构活动连接在所述背板侧壁上。
优选地，所述第二构件经螺钉与滑动凹槽配合活动连接在所述背板侧壁上。
本发明还提出一种导光板翘曲缓冲结构，包括第一构件和第二构件，所述第一构件的一侧与背光模组的导光板一端接触，所述第二构件的一侧与背光模组的背板侧壁活动连接，所述第二构件沿所述背板侧壁的延伸方向滑动；所述第一构件远离所述导光板的一侧的端面上设有第一斜面，所述第二构件远离所述背板侧壁的一侧的端面上设有第二斜面，所述第一斜面与所述第二斜面接触且配合滑动，所述第一构件沿所述导光板方向延伸出一弯折部，所述弯折部朝向所述导光板的一侧与所述导光板的上端面接触。
优选地，所述第一斜面与所述第一构件靠近背板底面的一端的竖直面之间的夹角大于180度且小于270度，所述第二斜面与所述第二构件靠近背板底面的一端的竖直面之间的夹角大于90度且小于180度。
优选地，所述第一斜面与所述第二斜面的倾斜角度互补。
优选地，所述第二构件经燕尾槽结构活动连接在所述背板侧壁上。
优选地，所述第二构件经螺钉与滑动凹槽配合活动连接在所述背板侧壁上。
本发明还提出一种背光模组，包括导光板和背板，还包括导光板翘曲缓冲结构，所述导光板翘曲缓冲结构包括第一构件和第二构件，所述第一构件的一侧与背光模组的导光板一端接触，所述第二构件的一侧与背光模组的背板侧壁活动连接，所述第二构件沿所述背板侧壁的延伸方向滑动；所述第一构件远离所述导光板的一侧的端面上设有第一斜面，所述第二构件远离所述背板侧壁的一侧的端面上设有第二斜面，所述第一斜面与所述第二斜面接触且配合滑动。
优选地，所述第一斜面与所述第一构件靠近背板底面的一端的竖直面之间的夹角大于180度且小于270度，所述第二斜面与所述第二构件靠近背板底面的一端的竖直面之间的夹角大于90度且小于180度。
优选地，所述第一斜面与所述第二斜面的倾斜角度互补。
优选地，所述第二构件经燕尾槽结构活动连接在所述背板侧壁上。
优选地，所述第二构件经螺钉与滑动凹槽配合活动连接在所述背板侧壁上。
优选地，所述第一构件沿所述导光板方向延伸出一弯折部，所述弯折部朝向所述导光板的一侧与所述导光板的上端面接触。
本发明采用导光板翘曲缓冲结构，有效减小了导光板因受热膨胀造成的翘曲程度，且采用倾斜角自锁结构，确保了整个导光板翘曲缓冲结构稳定不易脱落，延长了导光板和背光模组的使用寿命。
附图说明
图1为本发明导光板翘曲缓冲结构第一实施例的结构示意图；
图2为本发明导光板翘曲缓冲结构第二实施例的结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1所示，图1为本发明导光板翘曲缓冲结构第一实施例的结构示意图，该实施例提出的导光板翘曲缓冲结构，包括第一构件111和第二构件112，第一构件111的一侧与背光模组的导光板120一端接触，第二构件112的一侧与背光模组的背板侧壁131活动连接，例如，可采用螺钉151与滑动凹槽152配合，使第二构件112活动连接在背板侧壁131上，或采用燕尾槽结构进行活动连接，使第二构件112可沿背板侧壁131的延伸方向滑动。第一构件111远离导光板120的一侧的端面上设有第一斜面141，第二构件112远离背板侧壁131的一侧的端面上设有第二斜面142，第一斜面141与第一构件111靠近背板底面132的一端的竖直面161之间的夹角α大于180度且小于270度，第二斜面142与第二构件112靠近背板底面132的一端的竖直面162之间的夹角β大于90度且小于180度，第一斜面141与第二斜面142的倾斜角度设计为互补，第一斜面141与第二斜面142接触且配合滑动。当导光板120受热膨胀时，导光板120抵触第一构件111，第一构件111向第二构件142施加水平方向的力，同时由于斜面的作用，第一构件111向第二构件142还施加一个竖直方向上的分力，当导光板120膨胀推动第一构件111向第二构件142方向移动时，第二构件142沿背板侧壁131的延伸方向竖直向上运动，导光板120受热膨胀时不会被挤压变形，减小了导光板120的翘曲程度，有效延长了导光板210的使用寿命。
此外，当导光板120受热膨胀推动第一构件111向第二构件142方向移动时，由于第二构件112的斜角部位将第一构件111扣住，形成自锁结构，第一构件111在竖直方向被锁定，不会因为导光板120的膨胀或收缩而脱离导光板120和第二构件142，确保了整个导光板翘曲缓冲结构稳定不易脱落。
如图2所示，图2为本发明导光板翘曲缓冲结构第二实施例的结构示意图，本实施例与图1所示实施例的区别在于，第一构件211沿导光板220方向延伸出一弯折部230，弯折部230朝向导光板220的一侧与导光板220的上端面接触。当导光板220受热膨胀时，导光板220一端抵触第一构件211，第一构件211通过第一斜面241向第二构件212施加一个水平方向的分力和一个竖直方向的分力，同时导光板220的上端面向上抵触弯折部230，为弯折部230提供一个竖直方向的分力，弯折部230受到的竖直方向的分力通过第一斜面241全部施加到第二构件212，将第二构件212向上推动，进一步避免导光板220受热膨胀时被挤压变形，减小了导光板220的翘曲程度，有效延长了导光板220的使用寿命。
本发明实施例还提出一种背光模组，包括导光板、背板和导光板翘曲缓冲结构，其中，导光板翘曲缓冲结构包括第一构件和第二构件，第一构件的一侧与背光模组的导光板一端接触，第二构件的一侧与背光模组的背板侧壁活动连接，第二构件沿背板侧壁的延伸方向滑动；第一构件远离导光板的一侧的端面上设有第一斜面，第二构件远离背板侧壁的一侧的端面上设有第二斜面，第一斜面与第二斜面接触且配合滑动。
本实施例背光模组中的导光板翘曲缓冲结构，可包括图1和图2所示实施例中的所有技术方案，其详细结构和工作原理可参照前述实施例，在此不作赘述。由于采用了前述实施例中的导光板翘曲缓冲结构，本发明的背光模组相对于传统的背光模组来讲，可有效减小背光模组的导光板因受热膨胀造成翘曲的程度，延长了背光模组的使用寿命。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (16)

  1. 一种导光板翘曲缓冲结构，其特征在于，包括第一构件和第二构件，所述第一构件的一侧与背光模组的导光板一端接触，所述第二构件的一侧与背光模组的背板侧壁活动连接，所述第二构件沿所述背板侧壁的延伸方向滑动；所述第一构件远离所述导光板的一侧的端面上设有第一斜面，所述第二构件远离所述背板侧壁的一侧的端面上设有第二斜面，所述第一斜面与所述第二斜面接触且配合滑动。
  2. 根据权利要求1所述的导光板翘曲缓冲结构，其特征在于，所述第一斜面与所述第一构件靠近背板底面的一端的竖直面之间的夹角大于180度且小于270度，所述第二斜面与所述第二构件靠近背板底面的一端的竖直面之间的夹角大于90度且小于180度。
  3. 根据权利要求2所述的导光板翘曲缓冲结构，其特征在于，所述第一斜面与所述第二斜面的倾斜角度互补。
  4. 根据权利要求3所述的导光板翘曲缓冲结构，其特征在于，所述第二构件经燕尾槽结构活动连接在所述背板侧壁上。
  5. 根据权利要求3所述的导光板翘曲缓冲结构，其特征在于，所述第二构件经螺钉与滑动凹槽配合活动连接在所述背板侧壁上。
  6. 一种导光板翘曲缓冲结构，其特征在于，包括第一构件和第二构件，所述第一构件的一侧与背光模组的导光板一端接触，所述第二构件的一侧与背光模组的背板侧壁活动连接，所述第二构件沿所述背板侧壁的延伸方向滑动；所述第一构件远离所述导光板的一侧的端面上设有第一斜面，所述第二构件远离所述背板侧壁的一侧的端面上设有第二斜面，所述第一斜面与所述第二斜面接触且配合滑动，所述第一构件沿所述导光板方向延伸出一弯折部，所述弯折部朝向所述导光板的一侧与所述导光板的上端面接触。
  7. 根据权利要求6所述的导光板翘曲缓冲结构，其特征在于，所述第一斜面与所述第一构件靠近背板底面的一端的竖直面之间的夹角大于180度且小于270度，所述第二斜面与所述第二构件靠近背板底面的一端的竖直面之间的夹角大于90度且小于180度。
  8. 根据权利要求7所述的导光板翘曲缓冲结构，其特征在于，所述第一斜面与所述第二斜面的倾斜角度互补。
  9. 根据权利要求8所述的导光板翘曲缓冲结构，其特征在于，所述第二构件经燕尾槽结构活动连接在所述背板侧壁上。
  10. 根据权利要求8所述的导光板翘曲缓冲结构，其特征在于，所述第二构件经螺钉与滑动凹槽配合活动连接在所述背板侧壁上。
  11. 一种背光模组，包括导光板和背板，其特征在于，还包括导光板翘曲缓冲结构，所述导光板翘曲缓冲结构包括第一构件和第二构件，所述第一构件的一侧与背光模组的导光板一端接触，所述第二构件的一侧与背光模组的背板侧壁活动连接，所述第二构件沿所述背板侧壁的延伸方向滑动；所述第一构件远离所述导光板的一侧的端面上设有第一斜面，所述第二构件远离所述背板侧壁的一侧的端面上设有第二斜面，所述第一斜面与所述第二斜面接触且配合滑动。
  12. 根据权利要求11所述的背光模组，其特征在于，所述第一斜面与所述第一构件靠近背板底面的一端的竖直面之间的夹角大于180度且小于270度，所述第二斜面与所述第二构件靠近背板底面的一端的竖直面之间的夹角大于90度且小于180度。
  13. 根据权利要求12所述的背光模组，其特征在于，所述第一斜面与所述第二斜面的倾斜角度互补。
  14. 根据权利要求13所述的背光模组，其特征在于，所述第二构件经燕尾槽结构活动连接在所述背板侧壁上。
  15. 根据权利要求13所述的背光模组，其特征在于，所述第二构件经螺钉与滑动凹槽配合活动连接在所述背板侧壁上。
  16. 根据权利要求11所述的背光模组，其特征在于，所述第一构件沿所述导光板方向延伸出一弯折部，所述弯折部朝向所述导光板的一侧与所述导光板的上端面接触。
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