WO2016054833A1 - 一种曲率可变的背板组件及其背光单元 - Google Patents

一种曲率可变的背板组件及其背光单元 Download PDF

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Publication number
WO2016054833A1
WO2016054833A1 PCT/CN2014/088610 CN2014088610W WO2016054833A1 WO 2016054833 A1 WO2016054833 A1 WO 2016054833A1 CN 2014088610 W CN2014088610 W CN 2014088610W WO 2016054833 A1 WO2016054833 A1 WO 2016054833A1
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WO
WIPO (PCT)
Prior art keywords
connecting shaft
assembly
movable
movable block
backboard
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/CN2014/088610
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English (en)
French (fr)
Inventor
陈仕祥
李德华
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
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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 US14/425,093 priority Critical patent/US10018331B2/en
Publication of WO2016054833A1 publication Critical patent/WO2016054833A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/62—Switchable arrangements whereby the element being usually not switchable

Definitions

  • the present invention relates to the field of display, and in particular to a backplane assembly and a backlight unit thereof.
  • the display device uses a curved screen to keep the distance from the entire screen to the human eye lens, ensuring the clarity of the images on both sides of the screen. At the same time, the curved display device is more likely to be immersive and immersive.
  • the present invention provides a backplate assembly having a variable curvature and a backlight unit thereof.
  • a variable curvature back plate assembly comprising a bendable back plate, a connection assembly and an adjustment mechanism, the adjustment mechanism comprising a connection shaft fixed to the back plate, the connection assembly connecting the connection shaft and abutting Connected to the backing plate, the adjustment mechanism adjusts a position of the connecting component on the connecting shaft to adjust a pressing force of the connecting component received by the backing plate.
  • the middle of the connecting component is connected to the connecting shaft, two ends of the connecting component abut against the back surface of the backboard, and the adjusting mechanism adjusts a position of the middle of the connecting component on the connecting shaft.
  • the connecting component comprises two connecting arms, a fixing plate, two movable plates and a movable block
  • the fixing plate is sleeved on the connecting shaft and fixed on the back of the back plate
  • two of the movable plates Separately hinged on opposite sides of the fixing plate
  • the movable block is sleeved on the connecting shaft and is in the
  • the connecting shaft is axially movable; one end of the connecting arm is hinged to the movable block, and the other end of the connecting arm is hinged to the movable plate.
  • the connecting assembly comprises two connecting arms and a movable block, the movable block is sleeved on the connecting shaft and movable in an axial direction of the connecting shaft; one end of the connecting arm and the movable The blocks are relatively fixed and the two connecting arms are at a fixed angle.
  • the connecting assembly further comprises two movable plates, wherein the two movable plates are respectively slidably fixed to the back surface of the back plate, and the other ends of the two connecting arms are respectively hinged with the two movable plates .
  • the movable plate is provided with a plurality of elongated sliding holes, and the limiting nails are fixed to the backing plate through the sliding holes, and the movable plate slides relative to the limiting nails.
  • the adjusting mechanism further comprises a driving mechanism connected to the connecting shaft, The drive mechanism drives the connecting shaft to rotate to move the movable block up and down in the axial direction of the connecting shaft.
  • the driving mechanism includes a driving gear, and the connecting shaft is fixedly connected with a driven gear, and the driving mechanism drives the driven gear to rotate.
  • the present invention also provides a backlight unit including a backlight module and a variable curvature back plate assembly, the back plate assembly including a bendable back plate, a connection assembly, and an adjustment mechanism, the adjustment mechanism including being fixed in the a connecting shaft on the backboard, the connecting assembly connects the connecting shaft and abuts the backing plate, and the adjusting mechanism adjusts a position of the connecting component on the connecting shaft to adjust a position of the backboard The amount of pressing force of the connecting component.
  • the middle of the connecting component is connected to the connecting shaft, two ends of the connecting component abut against the back surface of the backboard, and the adjusting mechanism adjusts a position of the middle of the connecting component on the connecting shaft.
  • the connecting component comprises two connecting arms, a fixing plate, two movable plates and a movable block
  • the fixing plate is sleeved on the connecting shaft and fixed on the back of the back plate
  • two of the movable plates Separately hinged on opposite sides of the fixing plate
  • the movable block is sleeved on the connecting shaft and movable in the axial direction of the connecting shaft
  • the connecting arm is hinged at the one end to the activity
  • the other end of the connecting arm is hinged to the movable plate.
  • the connecting assembly comprises two connecting arms and a movable block, the movable block is sleeved on the connecting shaft and movable in an axial direction of the connecting shaft; one end of the connecting arm and the movable The blocks are relatively fixed and the two connecting arms are at a fixed angle.
  • the connecting assembly further comprises two movable plates, wherein the two movable plates are respectively slidably fixed to the back surface of the back plate, and the other ends of the two connecting arms are respectively hinged with the two movable plates .
  • the movable plate is provided with a plurality of elongated sliding holes, and the limiting nails are fixed to the backing plate through the sliding holes, and the movable plate slides relative to the limiting nails.
  • the adjusting mechanism further comprises a driving mechanism connected to the connecting shaft, The drive mechanism drives the connecting shaft to rotate to move the movable block up and down in the axial direction of the connecting shaft.
  • the driving mechanism includes a driving gear, and the connecting shaft is fixedly connected with a driven gear, and the driving mechanism drives the driven gear to rotate.
  • the invention provides a variable curvature back plate assembly and a backlight unit.
  • the back plate assembly can adjust the degree of bending as needed to adapt to the backlight unit and the display device with different curvatures, without separately manufacturing various back plate assemblies.
  • a backlight unit and a display device with different curvatures are adapted.
  • FIG. 1 is a schematic structural view of a backplane assembly of a planar state backplane according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of the front view of FIG. 1.
  • FIG. 2 is a schematic structural view of the front view of FIG. 1.
  • FIG. 3 is a schematic structural view of a backplane assembly of a curved state backplane according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural view of the front view of FIG. 3.
  • FIG. 5 is a schematic structural view of a backplane assembly of a curved state backplane according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural view of the front view of FIG. 5.
  • FIG. 6 is a schematic structural view of the front view of FIG. 5.
  • an embodiment of the present invention provides a backlight assembly with a variable curvature for fixing a backlight module having a light guiding structure such as a light guide plate and an optical film, including a flexible back plate 10 and a connection component.
  • the adjustment mechanism 30 includes a connecting shaft 301 fixed to the back plate 10.
  • the middle portion of the connecting component 20 is connected to the connecting shaft 301. Both ends of the connecting component 20 abut against the back surface of the backboard 10, and the adjusting mechanism 30 adjusts the position of the middle portion of the connecting member 20 on the connecting shaft 301 to thereby control the pressing force of both ends of the connecting member 20, changing the degree of bending of the backing plate 10.
  • the connecting component 20 includes two connecting arms 201, a fixing plate 202, two movable plates 203, and a movable block 204.
  • the fixing plate 202 is sleeved on the connecting shaft 301 and fixed on the back surface of the backing plate 10, where the fixing plate 202 is Two fixing screws are fixed on the back plate 10; the two movable plates 203 are respectively hinged on opposite sides of the fixing plate 202, so that the two movable plates 203 are respectively rotatably fixed to both sides of the fixing plate 202;
  • the block 204 is sleeved on the connecting shaft 301 and is movable up and down in the axial direction of the connecting shaft 301; one end of each connecting arm 201 is hinged to the movable block 204, and the other end is hinged to the movable plate 203.
  • the two movable plates 203 and the fixed plate 202, the two movable plates 203 and the two connecting arms 201, the two connecting arms 201 and the movable block 204 are pivotally connected by a pin shaft, and the connecting manner is simple and reliable.
  • the movable block 204 includes a groove 204a at both ends and a central hole (not labeled). One end of the connecting arm 201 is inserted into the groove 204a, and then the pin is used as a rotating shaft for limiting.
  • the connecting arm 201 can be opposite to the movable block.
  • the central hole of the movable block 204 is passed through the connecting shaft 301; similarly, another portion of the movable plate 203 that is rotatably connected with the connecting arm 201 is also provided with another groove (not labeled), and the other end of the connecting arm 201 After being inserted into the other groove, the pin is also used as a rotating shaft for limiting.
  • the adjustment mechanism 30 further includes a drive mechanism 302 coupled to the connection shaft 301 for driving the rotation of the connection shaft 301 to move the movable block 204 up and down in the axial direction of the connection shaft 301.
  • the connecting shaft 301 is restrained on the backing plate 10 by the connecting member 301a, so that the connecting shaft 301 is rotated on the backing plate 10 without coming out.
  • the driving mechanism 302 in this embodiment adopts a gear transmission.
  • the driving mechanism 302 is a driving gear
  • the driven shaft 3011 is connected to the connecting shaft 301.
  • the driving mechanism 302 serves as a power source to drive the driven gear 3011 to rotate.
  • the driving mechanism 302 in this embodiment may also be other driving structures, such as a belt transmission structure, a worm gear structure, and the like.
  • the driving mechanism 302 drives the connecting shaft 301 to rotate relative to the back plate 10, so that the movable block 204 moves toward the backing plate 10, since the fixing plate 202 is not fixed.
  • the movable block 204 drives the connecting arm 201 and the movable plates 203 on both sides to rotate, so that the angle between the connecting arm 201 and the movable plate 203 and the back plate 10 is gradually reduced, thereby pressing the two sides of the back plate 10 to bend the back plate.
  • the driving mechanism 302 drives the connecting shaft 301 to rotate in the opposite direction, and the back plate is subjected to the pressing force of the connecting arm 201 and the movable plates 203 on both sides. Gradually decrease until the plane state is restored.
  • the backlight unit of the present invention comprises a backlight module and a back plate assembly. Since the back plate assembly can adjust the curvature according to the needs of the backlight module, the problem that a single back plate cannot be applied to a plurality of backlight units in the manufacturing process is solved, and the number of spare parts is reduced. Save on production costs.
  • the connection assembly 20 of the backplane assembly of the present embodiment includes two connecting arms 201 and a movable block 204 , wherein the movable block 204 is sleeved on the connecting shaft 301 . It is movable in the axial direction of the connecting shaft 301; one end of the connecting arm 201 is fixed to the movable block 204, and the two connecting arms 201 are at a fixed angle.
  • One end of the connecting shaft 301 is rotatably connected to the back plate 10, and the other end of the connecting shaft 301 is screwed to the movable block 204.
  • connection assembly 20 of the embodiment further includes two movable plates 203, respectively, slidably fixed to the back surface of the back plate 10, and respectively hinged with the other ends of the two connecting arms 201;
  • the connecting shaft 301 moves on the connecting shaft 301, the two movable plates 203 are driven to deform the backing plate 10 by the two connecting arms 201, and the backing plate 10 is more evenly loaded, and the bending curvature is more gentle.
  • the connecting arm 201 is fixedly connected to the movable block 204 by a screw connection to ensure a constant angle between the two connecting arms 201. It is understood that in order to achieve this effect, the two connecting arms 201 and The movable block 204 can also be integrally formed.
  • a plurality of elongated sliding holes 2030 are defined in the movable plate 203.
  • the limiting nails 400 are fixed to the backing plate 10 through the sliding holes 2030, and the movable plate 203 can slide relative to the limiting nails 400.
  • the limiting pin 400 is a screw, and includes a nut (not labeled) and a threaded connecting end (not labeled).
  • the limiting pin 400 passes through the sliding hole 2030 on the movable plate 203, and the threaded end is fixed to the back.
  • the nut limits the movable plate 203 to prevent the movable plate 203 from coming off, and only the sliding hole 2030 of the movable plate 203 is allowed to slide along the limit pin 400.
  • the number of the sliding holes 2030 and the limiting nails 400 in this embodiment can be designed according to actual needs, and only the guiding movable plate 203 needs to be slid relative to the backing plate 10 without being detached.
  • the driving mechanism 302 drives the connecting shaft 301 to rotate relative to the backing plate 10, so that the movable block 204 moves toward the backing plate 10 due to the two connecting arms 201.
  • the two connecting arms 201 move along the movable block 204 toward the backing plate 10, thereby driving the movable plate 203 to press the backing plate 10, and the curvature of the backing plate 10 becomes large during the pressing process.
  • the limiting nail 400 slides toward the end of the sliding hole 2030 near the connecting shaft 301, thereby pressing the two sides of the backing plate 10 to bend the backing plate to form a back plate with a specific curvature; when a plane back is required
  • the driving mechanism 302 drives the connecting shaft 301 to rotate in the opposite direction, and the pressing force of the backing plate by the connecting arm 201 and the movable plates 203 on both sides is gradually reduced until the plane state is restored.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Transmission Devices (AREA)
  • Pivots And Pivotal Connections (AREA)
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Abstract

一种曲率可变的背板组件，包括可弯曲的背板（10）、连接组件（20）和调节机构（30），所述调节机构（30）包括固定在所述背板（10）上的连接轴（301），所述连接组件（20）连接所述连接轴（301）并抵接所述背板（10），所述调节机构（30）调节所述连接组件（20）在所述连接轴（301）上的位置从而调节所述背板（10）受到的所述连接组件（20）的压紧力大小。上述背板组件可以根据需要调整弯曲的程度，从而适应不同曲率的背光单元和显示装置，而不需要单独制造各种背板组件以适配不同曲率的背光单元和显示装置。

Description

一种曲率可变的背板组件及其背光单元 技术领域
本发明涉及显示领域,尤其涉及一种背板组件及其背光单元。
背景技术
随着显示技术的发展，曲面显示技术逐渐兴起并被各大电子显示设备和显示面板厂家所追捧。显示设备采用曲面屏幕能够使整个屏幕到人眼晶状体的距离保持一致，可以确保观看屏幕两侧图像时的清晰度，同时，曲面显示设备更容易让观看者身临其境，产生沉浸感。
目前市面上的曲面模组实现曲面的方法主要有两种，一种是用支架强制把背板弯曲成目标曲线然后固定背光模组，另一种是直接在背板成型曲面结构再固定背光模组。然而以上两种结构的背板均不能实现曲面模组曲率的调节，只能以单一的固定曲率进行显示。
发明内容
鉴于现有技术存在的不足，本发明提供了一种曲率可变的背板组件及其背光单元。
为了实现上述的目的，本发明采用了如下的技术方案：
一种曲率可变的背板组件，包括可弯曲的背板、连接组件和调节机构，所述调节机构包括固定在所述背板上的连接轴，所述连接组件连接所述连接轴并抵接所述背板，所述调节机构调节所述连接组件在所述连接轴上的位置从而调节所述背板受到的所述连接组件的压紧力大小。
其中，所述连接组件中部连接于所述连接轴，所述连接组件的两端抵接于所述背板的背面，所述调节机构调节所述连接组件中部在所述连接轴上的位置。
其中，所述连接组件包括两个连接臂、固定板、两个活动板和活动块，所述固定板套设于所述连接轴上并固定于所述背板背面；两个所述活动板分别铰接于所述固定板的相对的两个侧面上；所述活动块套设于所述连接轴上并在所 述连接轴的轴向上可移动；所述连接臂一端铰接于所述活动块，所述连接臂的另一端铰接于所述活动板。
其中，所述连接组件包括两个连接臂和活动块，所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂的一端与所述活动块相对固定，并且两个所述连接臂呈一固定夹角。
其中，所述连接组件还包括两个活动板，两个所述活动板分别可滑动地固定于所述背板的背面，两个所述连接臂的另一端分别与两个所述活动板铰接。
其中，所述活动板上开设有多个长条形的滑动孔，限位钉穿过所述滑动孔固定于所述背板上，所述活动板相对于所述限位钉滑动。
其中，所述连接轴的一端可转动地连接于所述背板，所述连接轴的另一端与所述活动块螺纹连接，所述调节机构还包括与所述连接轴连接的驱动机构，所述驱动机构驱动所述连接轴转动，使所述活动块沿所述连接轴的轴向上下移动。
其中，所述驱动机构包括驱动齿轮，所述连接轴上固定连接有从动齿轮，所述驱动机构带动所述从动齿轮转动。
本发明还提供了一种背光单元，包括背光模组和曲率可变的背板组件，所述背板组件包括可弯曲的背板、连接组件和调节机构，所述调节机构包括固定在所述背板上的连接轴，所述连接组件连接所述连接轴并抵接所述背板，所述调节机构调节所述连接组件在所述连接轴上的位置从而调节所述背板受到的所述连接组件的压紧力大小。
其中，所述连接组件中部连接于所述连接轴，所述连接组件的两端抵接于所述背板的背面，所述调节机构调节所述连接组件中部在所述连接轴上的位置。
其中，所述连接组件包括两个连接臂、固定板、两个活动板和活动块，所述固定板套设于所述连接轴上并固定于所述背板背面；两个所述活动板分别铰接于所述固定板的相对的两个侧面上；所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂一端铰接于所述活动块，所述连接臂的另一端铰接于所述活动板。
其中，所述连接组件包括两个连接臂和活动块，所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂的一端与所述活动块相对固定，并且两个所述连接臂呈一固定夹角。
其中，所述连接组件还包括两个活动板，两个所述活动板分别可滑动地固定于所述背板的背面，两个所述连接臂的另一端分别与两个所述活动板铰接。
其中，所述活动板上开设有多个长条形的滑动孔，限位钉穿过所述滑动孔固定于所述背板上，所述活动板相对于所述限位钉滑动。
其中，所述连接轴的一端可转动地连接于所述背板，所述连接轴的另一端与所述活动块螺纹连接，所述调节机构还包括与所述连接轴连接的驱动机构，所述驱动机构驱动所述连接轴转动，使所述活动块沿所述连接轴的轴向上下移动。
其中，所述驱动机构包括驱动齿轮，所述连接轴上固定连接有从动齿轮，所述驱动机构带动所述从动齿轮转动。
本发明提供了一种曲率可变的背板组件及背光单元，背板组件可以根据需要调整弯曲的程度，从而适应不同曲率的背光单元和显示装置，而不需要单独制造各种背板组件以适配不同曲率的背光单元和显示装置。
附图说明
图1为本发明实施例1平面状态背板的背板组件结构示意图。
图2为图1的主视方向的结构示意图。
图3为本发明实施例1曲面状态背板的背板组件结构示意图。
图4为图3的主视方向的结构示意图。
图5为本发明实施例2曲面状态背板的背板组件结构示意图。
图6为图5的主视方向的结构示意图。
具体实施方式
下面将结合附图用实施例对本发明做进一步的说明。
实施例1
参阅图1，本发明的实施例提供了一种曲率可变的背板组件，用于固定具有导光板、光学膜片等导光结构的背光模组，包括可弯曲的背板10、连接组件20和调节机构30，调节机构30包括固定在背板10上的连接轴301，连接组件20的中部连接于连接轴301，连接组件20的两端抵接于背板10的背面，调节机构 30调节连接组件20中部在连接轴301上的位置从而控制连接组件20的两端的压紧力，改变背板10的弯曲程度。
具体地，连接组件20包括两个连接臂201、固定板202、两个活动板203和活动块204，固定板202套设于连接轴301上并固定于背板10背面，这里固定板202由两颗固定螺钉固定于背板10上；两个活动板203分别铰接于固定板202的相对的两个侧面上，使得两个活动板203分别可转动地固定于固定板202的两侧；活动块204套设于连接轴301上并在连接轴301的轴向上可上下移动；每个连接臂201的一端铰接于活动块204，其另一端铰接于活动板203。
这里，两个活动板203与固定板202、两个活动板203与两个连接臂201、两个连接臂201与活动块204之间均使用销轴进行转动连接，连接方式简单可靠。具体地，活动块204包括两端的凹槽204a和中心孔(图未标)，连接臂201的一端插入凹槽204a中后利用销轴作为转轴进行限位，连接臂201即可相对于活动块204旋转，活动块204的中心孔供连接轴301穿过；同理，活动板203上与连接臂201转动连接的部位也开设有另一凹槽(图未标)，连接臂201的另一端插入该另一凹槽中后也利用销轴作为转轴进行限位。
结合图2-图4，连接轴301的一端可转动地连接于背板10，连接轴301的另一端与活动块204螺纹连接，即活动块204的中心孔具有内螺纹。调节机构30还包括与连接轴301连接的驱动机构302，驱动机构302用于驱动连接轴301转动，使活动块204沿连接轴301的轴向上下移动。具体地，连接轴301通过连接件301a限位在背板10上，使得连接轴301在背板10上转动而不脱出。
本实施例中的驱动机构302采用齿轮传动，这里驱动机构302为驱动齿轮，连接轴301上连接有从动齿轮3011，驱动机构302作为动力源带动从动齿轮3011转动。
可以理解的是，本实施例中的驱动机构302也可以是其他驱动结构，比如皮带传动结构、蜗轮蜗杆结构等。
实际操作中，当需要特定曲率而改变平面背板形状时，驱动机构302驱动连接轴301相对于背板10转动，从而使得活动块204朝靠近背板10的方向移动，由于固定板202固定不动，活动块204带动连接臂201和两侧的活动板203转动，使连接臂201和活动板203与背板10的夹角逐渐减小，从而压迫背板10的两侧使背板弯曲形成特定曲率的背板；当需要平面背板时，驱动机构302驱动连接轴301反方向转动，背板受到连接臂201和两侧的活动板203的压迫力 逐渐减小，直至恢复平面状态。
本发明的背光单元包括背光模组和背板组件，由于背板组件可根据背光模组需要进行曲率调节，解决了制造过程中单一背板不能适用多种背光单元的难题，减少了备件数量，节约了生产成本。
实施例2
如图5、图6所示，与实施例1不同的是，本实施例的背板组件的连接组件20包括两个连接臂201和活动块204，其中，活动块204套设于连接轴301上并在连接轴301的轴向上可移动；连接臂201的一端与活动块204相对固定，并且两个连接臂201呈一固定夹角。连接轴301的一端可转动地连接于背板10，连接轴301的另一端与活动块204螺纹连接，活动块204在连接轴301上移动的同时带动两个连接臂201压迫背板10产生形变。进一步地，本实施例的连接组件20还包括两个活动板203，两个活动板203分别可滑动地固定于背板10的背面，同时分别与两个连接臂201的另一端铰接；活动块204在连接轴301上移动的同时通过两个连接臂201带动两个活动板203压迫背板10产生形变，背板10受力更均匀，产生的弯曲弧度更平缓。本实施例中，连接臂201通过螺纹连接件与活动块204固定连接，以保证两个连接臂201之间的夹角恒定，可以理解的是，为了实现这一效果，两个连接臂201和活动块204也可以一体成型。
具体地，在活动板203上开设有多个长条形的滑动孔2030，限位钉400穿过滑动孔2030固定于背板10上，活动板203可以相对于限位钉400进行滑动。具体地，限位钉400为螺钉，包括螺帽(图未标)和螺纹连接端(图未标)，限位钉400穿过活动板203上的滑动孔2030，并且螺纹连接端固定于背板10上，螺帽对活动板203进行限位，防止活动板203脱出，仅允许活动板203的滑动孔2030沿着限位钉400进行滑动。可以理解的是，本实施例中的滑动孔2030和限位钉400的数量可以根据实际需要进行设计，只需要引导活动板203相对于背板10滑动而不脱离即可。
实际操作中，当需要特定曲率而改变平面背板形状时，驱动机构302驱动连接轴301相对于背板10转动，从而使得活动块204朝靠近背板10的方向移动，由于两个连接臂201与活动块204相对固定，两个连接臂201即跟随活动块204朝靠近背板10的方向移动，从而带动活动板203挤压背板10，在挤压过程中，背板10曲率变大，限位钉400向滑动孔2030上靠近连接轴301的端部滑动，从而压迫背板10的两侧使背板弯曲形成特定曲率的背板；当需要平面背 板时，驱动机构302驱动连接轴301反方向转动，背板受到连接臂201和两侧的活动板203的压迫力逐渐减小，直至恢复平面状态。
以上仅是本申请的几种具体实施方式，应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (18)

  1. 一种曲率可变的背板组件，其中，包括可弯曲的背板、连接组件和调节机构，所述调节机构包括固定在所述背板上的连接轴，所述连接组件连接所述连接轴并抵接所述背板，所述调节机构调节所述连接组件在所述连接轴上的位置从而调节所述背板受到的所述连接组件的压紧力大小。
  2. 根据权利要求1所述的背板组件，其中，所述连接组件中部连接于所述连接轴，所述连接组件的两端抵接于所述背板的背面，所述调节机构调节所述连接组件中部在所述连接轴上的位置。
  3. 根据权利要求2所述的背板组件，其中，所述连接组件包括两个连接臂、固定板、两个活动板和活动块，所述固定板套设于所述连接轴上并固定于所述背板背面；两个所述活动板分别铰接于所述固定板的相对的两个侧面上；所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂一端铰接于所述活动块，所述连接臂的另一端铰接于所述活动板。
  4. 根据权利要求2所述的背板组件，其中，所述连接组件包括两个连接臂和活动块，所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂的一端与所述活动块相对固定，并且两个所述连接臂呈一固定夹角。
  5. 根据权利要求4所述的背板组件，其中，所述连接组件还包括两个活动板，两个所述活动板分别可滑动地固定于所述背板的背面，两个所述连接臂的另一端分别与两个所述活动板铰接。
  6. 根据权利要求5所述的背板组件，其中，所述活动板上开设有多个长条形的滑动孔，限位钉穿过所述滑动孔固定于所述背板上，所述活动板相对于所述限位钉滑动。
  7. 根据权利要求3所述的背板组件，其中，所述连接轴的一端可转动地连接于所述背板，所述连接轴的另一端与所述活动块螺纹连接，所述调节机构还包括与所述连接轴连接的驱动机构，所述驱动机构驱动所述连接轴转动，使所述活动块沿所述连接轴的轴向上下移动。
  8. 根据权利要求4所述的背板组件，其中，所述连接轴的一端可转动地连接于所述背板，所述连接轴的另一端与所述活动块螺纹连接，所述调节机构还包括与所述连接轴连接的驱动机构，所述驱动机构驱动所述连接轴转动，使所 述活动块沿所述连接轴的轴向上下移动。
  9. 根据权利要求7所述的背板组件，其中，所述驱动机构包括驱动齿轮，所述连接轴上固定连接有从动齿轮，所述驱动机构带动所述从动齿轮转动。
  10. 一种背光单元，包括背光模组和曲率可变的背板组件，所述背板组件包括可弯曲的背板、连接组件和调节机构，所述调节机构包括固定在所述背板上的连接轴，所述连接组件连接所述连接轴并抵接所述背板，所述调节机构调节所述连接组件在所述连接轴上的位置从而调节所述背板受到的所述连接组件的压紧力大小。
  11. 根据权利要求10所述的背板组件，其中，所述连接组件中部连接于所述连接轴，所述连接组件的两端抵接于所述背板的背面，所述调节机构调节所述连接组件中部在所述连接轴上的位置。
  12. 根据权利要求11所述的背板组件，其中，所述连接组件包括两个连接臂、固定板、两个活动板和活动块，所述固定板套设于所述连接轴上并固定于所述背板背面；两个所述活动板分别铰接于所述固定板的相对的两个侧面上；所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂一端铰接于所述活动块，所述连接臂的另一端铰接于所述活动板。
  13. 根据权利要求11所述的背板组件，其中，所述连接组件包括两个连接臂和活动块，所述活动块套设于所述连接轴上并在所述连接轴的轴向上可移动；所述连接臂的一端与所述活动块相对固定，并且两个所述连接臂呈一固定夹角。
  14. 根据权利要求13所述的背板组件，其中，所述连接组件还包括两个活动板，两个所述活动板分别可滑动地固定于所述背板的背面，两个所述连接臂的另一端分别与两个所述活动板铰接。
  15. 根据权利要求14所述的背板组件，其中，所述活动板上开设有多个长条形的滑动孔，限位钉穿过所述滑动孔固定于所述背板上，所述活动板相对于所述限位钉滑动。
  16. 根据权利要求12所述的背板组件，其中，所述连接轴的一端可转动地连接于所述背板，所述连接轴的另一端与所述活动块螺纹连接，所述调节机构还包括与所述连接轴连接的驱动机构，所述驱动机构驱动所述连接轴转动，使所述活动块沿所述连接轴的轴向上下移动。
  17. 根据权利要求13所述的背板组件，其中，所述连接轴的一端可转动地 连接于所述背板，所述连接轴的另一端与所述活动块螺纹连接，所述调节机构还包括与所述连接轴连接的驱动机构，所述驱动机构驱动所述连接轴转动，使所述活动块沿所述连接轴的轴向上下移动。
  18. 根据权利要求16所述的背板组件，其中，所述驱动机构包括驱动齿轮，所述连接轴上固定连接有从动齿轮，所述驱动机构带动所述从动齿轮转动。
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