WO2014047979A1 - 背光模组 - Google Patents

背光模组 Download PDF

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Publication number
WO2014047979A1
WO2014047979A1 PCT/CN2012/082816 CN2012082816W WO2014047979A1 WO 2014047979 A1 WO2014047979 A1 WO 2014047979A1 CN 2012082816 W CN2012082816 W CN 2012082816W WO 2014047979 A1 WO2014047979 A1 WO 2014047979A1
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WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
positioning
thread
fixed
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/CN2012/082816
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English (en)
French (fr)
Inventor
张庞岭
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.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to DE112012006940.4T priority Critical patent/DE112012006940B4/de
Priority to US13/703,892 priority patent/US9110198B2/en
Publication of WO2014047979A1 publication Critical patent/WO2014047979A1/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
    • G02B6/0081—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
    • G02B6/0033—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
    • G02B6/0055—Reflecting element, sheet or layer

Definitions

  • the present invention relates to the field of liquid crystal displays, and in particular, to a structural design of a backlight module. Background technique
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a liquid crystal panel and a backlight module.
  • the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, and control the liquid crystal molecules to change direction by energizing the glass substrate, and refracting the light of the backlight module to produce a picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is required to display the image normally. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-in backlight module and a direct-lit backlight module according to different incident positions of the light source.
  • a light source such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel, and a surface light source is directly formed and supplied to the liquid crystal panel.
  • the side-lit backlight module has a backlight LED strip (Light bar) disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is incident on the light guide plate (LGP). The surface enters the light guide plate, is reflected and diffused, and is emitted from the light exit surface of the light guide plate to form a surface light source for being supplied to the liquid crystal panel.
  • LGP light guide plate
  • a general LED side-lit backlight module includes: a backplane 100, a backlight 300 disposed in the backplane 100, and a light guide panel 500 corresponding to the backlight 300 disposed in the backplane 100.
  • the light guide plate 500 is made of PMMA (poly(meth) methacrylate) or MS (methacrylic acid-butadiene-styrene copolymer), and has light weight and high mechanical strength.
  • the reflective sheet 700 is adhered to the top of the back plate 100, and the light guide plate 500 is closely attached to the reflective sheet 700, which causes the backlight module to be in the process of mechanical vibration and impact, the back plate 100,
  • the reflection sheet 700 and the light guide plate 500 are in contact with each other and rubbed, and if foreign matter enters between the reflection sheet 700 and the light guide plate 500 during assembly due to the influence of the assembly environment, foreign matter is also generated during mechanical vibration and impact. It will rub against the light guide plate 500 and the reflection sheet 700, which will easily cause scratches of the light guide plate, thereby forming a problem of white spots or white stains on the screen, causing optical quality problems, resulting in application of the backlight mold. Group of liquid crystal displays The display quality of the device is reduced. Summary of the invention
  • the object of the present invention is to provide a backlight module, which can well prevent the light guide plate from being scratched during mechanical vibration and impact, avoiding optical quality problems, and ensuring the display quality of the liquid crystal display to which the backlight module is applied.
  • the present invention provides a backlight module, including: a backplane, a backlight disposed in the backplane, a light guide plate disposed in the backplane and disposed opposite to the backlight, and disposed on the backplane and the light guide panel. a plurality of positioning units, a reflection sheet disposed between the back plate and the light guide plate and mounted on the positioning unit, and an optical film disposed on the light guide plate, wherein the positioning unit is fixed at one end to the light guide plate, and the other end is
  • the fixing plate is fixed on the back plate, and a positioning portion is disposed in the middle portion.
  • the reflective sheet is mounted on the positioning portion, and a gap is formed between the light guide plate and the reflective sheet.
  • the positioning unit has a screw shape, and further includes: a connecting rod, first and second mounting portions disposed at two ends of the connecting rod, the positioning portion is disposed at a middle portion of the connecting rod, and the first and second mounting portions are round
  • the positioning portion is annular.
  • One end of the connecting rod is integrally formed with the first mounting portion, the other end is provided with a first thread, the middle portion is provided with a second thread, and the second mounting portion is provided with a first screw hole corresponding to the first thread, through the first The thread is locked to the first screw hole to connect the second mounting portion and the connecting rod.
  • the inner side wall of the positioning portion is provided with a second screw hole corresponding to the second thread, and the second screw is locked by the second thread. The hole in turn fixes the positioning portion to the middle of the connecting rod.
  • the first mounting portion is integrally formed with the light guide plate.
  • the first mounting portion is adhered and fixed to the light guide plate.
  • the second mounting portion is disposed on the back plate, and the connecting rod is fixed to the second mounting portion by a tapping and locking manner.
  • the second mounting portion is affixed and fixed to the backboard.
  • the positioning unit is disposed at an edge of opposite sides of the light guide plate, and an edge of the reflective sheet is fixed on the positioning portion.
  • the reflective sheet is affixed and fixed to the positioning portion.
  • the number of the positioning units is eight, and is symmetrically disposed on both sides of the light guide plate.
  • the present invention also provides a backlight module, including: a backplane, a backlight disposed in the backplane, a light guide plate disposed in the backplane and disposed opposite to the backlight, and a plurality of backlights disposed between the backplane and the light guide panel a positioning unit, a reflective sheet disposed between the backboard and the light guide plate and mounted on the positioning unit, and an optical film disposed on the light guide plate, the positioning unit is fixed at one end to the light guide plate, and the other end is fixed to the back plate a positioning portion is disposed in the middle portion, and the reflective sheet is mounted on the positioning portion, and the light guide plate is Forming a gap between the reflective sheets;
  • the positioning unit has a screw shape, and further includes: a connecting rod, first and second mounting portions disposed at two ends of the connecting rod, the positioning portion is disposed at a middle portion of the connecting rod, and the first and second mounting portions are Is circular, the positioning portion is circular;
  • one end of the connecting rod is integrally formed with the first mounting portion, the other end is provided with a first thread, and the middle portion is provided with a second thread, and the second mounting portion is provided with a first screw hole corresponding to the first thread, The first thread is locked to the first screw hole to connect the second mounting portion and the connecting rod.
  • the inner side wall of the positioning portion is provided with a second screw hole corresponding to the second thread, and the second thread is locked by the second thread.
  • the two screw holes further fix the positioning portion in the middle of the connecting rod;
  • first mounting portion is integrally formed with the light guide plate
  • the second mounting portion is adhered and fixed to the backboard
  • the positioning unit is disposed at an edge of opposite sides of the light guide plate, and an edge of the reflective sheet is fixed on the positioning portion;
  • the reflective sheet is affixed and fixed to the positioning portion
  • the number of the positioning units is eight, and is symmetrically disposed on both sides of the light guide plate.
  • the backlight module of the present invention forms a gap structure between the light guide plate and the reflection sheet through the positioning unit, so that the light guide plate and the reflection sheet do not contact each other and rub during mechanical vibration and impact, thereby ensuring The light guide plate is not scratched, which is beneficial to avoid optical quality problems caused by scratches, and ensures the display quality of the liquid crystal display to which the backlight module is applied.
  • FIG. 1 is a schematic structural view of a conventional backlight module
  • FIG. 2 is a schematic structural view of a backlight module of the present invention
  • Figure 3 is an exploded view of the positioning unit of the present invention.
  • FIG. 4 is a schematic structural view of the positioning unit of FIG. 3 after assembly
  • FIG. 5 is a schematic structural view of another preferred embodiment of a backlight module of the present invention.
  • the present invention provides a backlight module, including: a back plate 2 , a backlight 4 disposed in the back plate 2 , and a light guide plate 6 disposed in the back plate 2 and disposed opposite to the backlight 4 . And a plurality of positioning units 7 disposed between the backboard 2 and the light guide plate 6 , a reflection sheet 8 disposed between the back panel 2 and the light guide plate 6 and mounted on the positioning unit ⁇ , and the reflector 8 disposed on the light guide plate 6
  • the optical film 9 is fixed on the light guide plate 6 at the other end, and the other end is fixed on the back plate 2, and a positioning portion 72 is disposed in the middle portion, and the reflective sheet 8 is mounted on the positioning portion 72.
  • a gap 5 is formed between the light guide plate 6 and the reflection sheet 8.
  • the positioning unit 7 has a screw shape, and further includes: a connecting rod
  • the first and second mounting portions 76 and 78 are disposed at two ends of the connecting rod 74.
  • the positioning portion 72 is disposed at a middle portion of the connecting rod 74, and the first and second mounting portions 76 and 78 are circular.
  • the positioning portion 72 is annular.
  • the one end of the connecting rod 74 is integrally formed with the first mounting portion 76, the other end is provided with a first thread 75, and the middle portion is provided with a second thread 77.
  • the second mounting portion 78 is corresponding to the first thread 75.
  • a first screw hole (not shown) is locked to the first screw hole by the first thread 75 to connect the second mounting portion 78 with the connecting rod 74, and the inner side wall of the positioning portion 72 corresponds to the first portion
  • the second thread 77 is provided with a second screw hole (not shown), and the second screw hole is locked by the second thread 77 to fix the positioning portion 72 to the middle of the connecting rod 74, and the screw hole is screwed to guide the guide hole.
  • the distance between the light plate 6 and the reflection sheet 8 and the distance between the reflection sheet 8 and the back sheet 2 can be adjusted to improve flexibility.
  • the first mounting portion 76 and the light guide plate 6 are integrally formed.
  • the second mounting portion 78 is adhered and fixed to the back plate 2.
  • the annular positioning portion 72 is mounted on the second thread 77 of the connecting rod, and the reflective sheet 8 is mounted on the positioning portion 72, and the second mounting portion 78 is mounted on the first thread 75 of the connecting rod, and then The second mounting portion 78 is attached to the back plate 1, and the reflection sheet 8 and the light guide plate 6 are fixed to the back plate 2.
  • the positioning unit 7 is disposed at an edge of opposite sides of the light guide plate 6 , and an edge of the reflective sheet 8 is mounted and fixed on the positioning portion 72 .
  • the number of the positioning units 7 is eight, and is symmetrically disposed on both sides of the light guide plate 6.
  • the reflection sheet 8 is fixed by being pasted
  • the positioning portion 72 is on the positioning portion 72.
  • the first mounting portion 76 can be fixed to the light guide plate 6 by adhesive bonding, and the connecting rod 74 is locked by tapping.
  • the second mounting portion 78 can be fixed to the back plate 2 by adhesive bonding or the second mounting portion 78 ′ is disposed on the back plate 2 and the back plate 2 .
  • the second mounting portion 78 is integrally formed with the back plate 2 or glued to the back plate 2, and then the first mounting portion 76' is adhered and fixed to the light guide plate 6, and the reflective sheet 8 is further attached. And the light guide plate 6 is fixed on the back plate 2.
  • the present invention provides a backlight module, which forms a gap structure between the light guide plate and the reflection sheet through the positioning unit, so that the light guide plate and the reflection sheet do not contact each other and rub during mechanical vibration and impact. Moreover, the light guide plate is prevented from being scratched, which is beneficial to avoid the problem of optical quality caused by scratches during the transportation of the backlight module, and ensures the display quality of the liquid crystal display to which the backlight module is applied.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Description

背光模组 技术领域
本发明涉及液晶显示器领域， 尤其涉及一种背光模组的结构设计。 背景技术
液晶显示装置（LCD, Liquid Crystal Display )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用。 现有市场上的液晶显示装置大部分 为背光型液晶显示装置， 其包括液晶面板及背光模组 （ backlight module ) 。 液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分 子， 通过给玻璃基板通电与否来控制液晶分子改变方向， 将背光模组的光 线折射出来产生画面。 由于液晶面板本身不发光， 需要借由背光模组提供 的光源来正常显示影像， 因此， 背光模组成为液晶显示装置的关键组件之 一。 背光模组依照光源入射位置的不同分成侧入式背光模组与直下式背光 模组两种。 直下式背光模组是将发光光源例如 CCFL(Cold Cathode Fluorescent Lamp, 阴极萤光灯管)或 LED(Light Emitting Diode, 发光二极 管)设置在液晶面板后方， 直接形成面光源提供给液晶面板。 而侧入式背光 模组是将背光源 LED灯条（Light bar )设于液晶面板侧后方的背板边缘， LED灯条发出的光线从导光板（ LGP， Light Guide Plate )一侧的入光面进 入导光板， 经反射和扩散后从导光板出光面射出， 形成面光源提供给液晶 面板。
请参阅图 1 , 一般 LED侧入式背光模组包括： 包括： 背板 100、 设于 背板 100 内的背光源 300、 对应背光源 300 设于背板 100 内的导光板 500、 设于导光板 500底面的反射片 700及设于导光板 500顶面的光学膜 片 900。 所述导光板 500釆用 PMMA (聚甲基丙烯酸曱酯 )或者 MS (甲 基丙烯酸 -丁二烯-苯乙烯共聚物）材质制作而成， 重量轻且机械强度较 高。 在现有的结构中， 背板 100上方贴住反射片 700， 反射片 700上方会 紧贴住导光板 500, 这就会造成该背光模组在机械振动以及沖击过程中， 背板 100、 反射片 700 以及导光板 500之间会相互接触并摩擦， 而且， 若 由于组装环境的影响， 组装时在反射片 700 以及导光板 500之间有异物进 入， 则在机械振动以及冲击过程中异物也会与导光板 500及反射片 700进 行摩擦， 这样就会极容易造成导光板的刮伤， 从而在画面上就会形成白点 或者白污的问题， 造成光学品质的问题， 造成应用该背光模组的液晶显示 器的显示质量降低。 发明内容
本发明的目的在于提供一种背光模组， 可以很好地防止在机械振动及 冲击过程中导光板被刮伤， 避免了光学品质问题， 保证了应用该背光模组 的液晶显示器的显示质量。
为实现上述目的， 本发明提供一种背光模组， 包括： 背板、 设于背板 内的背光源、 设于背板内且相对背光源设置的导光板、 设于背板与导光板 之间的数个定位单元、 设于背板与导光板之间且安装固定于定位单元上的 反射片及设于导光板上的光学膜片， 所述定位单元一端固定于导光板上， 另一端固定于背板上， 中部设有一定位部， 所述反射片安装于该定位部 上， 所述导光板与反射片之间形成一间隙。
所述定位单元呈螺丝状， 其还包括： 连接杆、 设于连接杆两端的第 一、 第二安装部， 所述定位部设于连接杆中部， 所述第一、 第二安装部为 圆形， 所述定位部为圓环形。
所述连接杆一端与第一安装部一体成型， 另一端设有第一螺纹， 中部 设有第二螺纹， 所述第二安装部对应所述第一螺纹设有第一螺丝孔， 通过 第一螺纹锁紧于第一螺丝孔进而把笫二安装部与连接杆连接在一起， 所述 定位部内侧壁上对应所述第二螺紋设有第二螺丝孔， 通过第二螺纹锁紧第 二螺丝孔进而把定位部固定于连接杆的中部。
所述第一安装部与导光板一体成型。
所述第一安装部粘贴固定于导光板上。
所述第二安装部设于背板上， 所述连接杆通过攻牙锁附的方式固定于 第二安装部。
所述第二安装部粘贴固定于背板上。
所述定位单元设于导光板相对两侧的边缘处， 所述反射片的边缘固定 于定位部上。
所述反射片粘贴固定于所述定位部上。
所述定位单元的数量为 8个， 对称设于导光板的两侧。
本发明还提供一种背光模组， 包括： 背板、 设于背板内的背光源、 设 于背板内且相对背光源设置的导光板、 设于背板与导光板之间的数个定位 单元、 设于背板与导光板之间且安装固定于定位单元上的反射片及设于导 光板上的光学膜片， 所述定位单元一端固定于导光板上， 另一端固定于背 板上， 中部设有一定位部， 所述反射片安装于该定位部上， 所述导光板与 反射片之间形成一间隙；
其中， 所述定位单元呈螺丝状， 其还包括： 连接杆、 设于连接杆两端 的第一、 第二安装部， 所述定位部设于连接杆中部， 所述第一、 第二安装 部为圓形， 所述定位部为圓环形；
其中， 所述连接杆一端与第一安装部一体成型， 另一端设有第一螺 紋， 中部设有第二螺纹， 所述笫二安装部对应所述第一螺纹设有第一螺丝 孔， 通过第一螺纹锁紧于第一螺丝孔进而把第二安装部与连接杆连接在一 起， 所述定位部内侧壁上对应所述第二螺纹设有第二螺丝孔， 通过第二螺 纹锁紧第二螺丝孔进而把定位部固定于连接杆的中部；
其中， 所述第一安装部与导光板一体成型；
其中， 所述第二安装部粘贴固定于背板上；
其中， 所述定位单元设于导光板相对两侧的边缘处， 所述反射片的边 缘固定于定位部上；
其中， 所述反射片粘贴固定于所述定位部上；
其中， 所述定位单元的数量为 8个， 对称设于导光板的两侧。
本发明的有益效果： 本发明背光模组通过定位单元使导光板与反射片 之间形成一间隙结构， 使得导光板与反射片在机械振动及沖击过程中不会 相互接触并摩擦， 进而确保了导光板不会被刮伤， 有利于避免因刮伤产生 的光学品质问题， 保证了应用该背光模组的液晶显示器的显示质量。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 1为现有背光模组结构示意图；
图 2为本发明背光模组结构示意图；
图 3为本发明中定位单元的爆炸图；
图 4为图 3定位单元组装后的结构示意图；
图 5为本发明背光模组另一较佳实施例的结构示意图。 具体实施方式 为更进一步阐述本发明所釆取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
请参阅图 2 至图 4， 本发明提供一种背光模组， 包括： 背板 2、 设于 背板 2内的背光源 4、 设于背板 2 内且相对背光源 4设置的导光板 6、 设 于背板 2与导光板 6之间的数个定位单元 7、 设于背板 2与导光板 6之间 且安装固定于定位单元 Ί上的反射片 8及设于导光板 6上的光学膜片 9 , 所述定位单元 7—端固定于导光板 6上， 另一端固定于背板 2上， 中部设 有一定位部 72 , 所述反射片 8安装于该定位部 72上， 所述导光板 6与反 射片 8之间形成一间隙 5。 通过在导光板 6与反射片 8设置成具有一间隙 5 结构， 这就有效地防止了在做机械振动以及沖击过程中， 导光板 6与反 射片 8以及背板 2之间接触而发生硬摩擦， 并且即使导光板 6与反射片 8 之间存在异物以及灰尘等小颗粒也不会因为两者之间有接触而使得异物刮 伤到导光板 6, 从而保证了该背光模组的光学品质， 保证了应用该背光模 组的液晶显示器的显示质量。
在本较佳实施例中， 所述定位单元 7 呈螺丝状， 其还包括： 连接杆
74、 设于连接杆 74两端的第一、 第二安装部 76、 78 , 所述定位部 72设于 连接杆 74 中部， 所述第一、 第二安装部 76、 78 为圓形， 所述定位部 72 为圓环形。
其中， 所述连接杆 74一端与第一安装部 76—体成型， 另一端设有第 一螺纹 75， 中部设有第二螺纹 77， 所述第二安装部 78对应所述第一螺紋 75设有第一螺丝孔（未图示） ， 通过第一螺纹 75锁紧于第一螺丝孔进而 把第二安装部 78与连接杆 74连接在一起， 所迷定位部 72 内側壁上对应 所述第二螺纹 77设有第二螺丝孔（未图示） ， 通过第二螺纹 77锁紧第二 螺丝孔进而把定位部 72固定于连接杆 74的中部， 通过螺纹锁紧螺丝孔的 方式， 使得导光板 6与反射片 8的间隙 5距离及反射片 8与背板 2的距离 皆可调， 提高灵活性。
在本较佳实施例中， 所述第一安装部 76 与导光板 6 可一体成型设 置， 此时， 所述第二安装部 78 粘贴固定于背板 2上。 安装时， 将圓环形 的定位部 72安装于连接杆的第二螺纹 77处， 并反射片 8安装于定位部 72 上， 将第二安装部 78安装于连接杆的第一螺纹 75处， 再将第二安装部 78 粘贴于背板 1上， 进而把反射片 8及导光板 6固定于背板 2上。
所述定位单元 7设于导光板 6相对两侧的边缘处， 所述反射片 8的边 缘安装固定于定位部 72上。 在本较佳实施例中， 所述定位单元 7 的数量 为 8个， 对称设于导光板 6的两侧。 所述反射片 8通过粘贴的方式固定于 所述定位部 72上。
请参阅图 5 , 作为可供选择的另一较佳实施例， 所述第一安装部 76，可 通过胶粘贴固定于导光板 6 上， 此时所述连接杆 74，通过攻牙锁附的方式 固定于第一安装部 76，， 所述第二安装部 78，可以采用胶粘贴固定于背板 2 上或者所述第二安装部 78'设于背板 2上且与背板 2一体成型。 安装时， 将圓环形定位部 72'安装于连接杆 74'中部位置， 并反射片 8安装于定位部 72，上， 通过攻牙锁附的方式将连接杆 74，安装于第二安装部 78，上， 其 中， 第二安装部 78，与背板 2—体成型或者通过胶粘贴于背板 2上， 再将 第一安装部 76'粘贴固定于导光板 6上， 进而把反射片 8及导光板 6固定 于背板 2上。
综上所述， 本发明提供一种背光模组， 通过定位单元使导光板与反射 片之间形成一间隙结构， 使得导光板与反射片在机械振动及沖击过程中不 会相互接触并摩擦， 进而确保了导光板不会被刮伤， 有利于避免因背光模 组运输过程中刮伤产生光学品质的问题， 保证了应用该背光模组的液晶显 示器的显示质量。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
1、 一种背光模组， 包括： 背板、 设于背板内的背光源、 设于背板内 且相对背光源设置的导光板、 设于背板与导光板之间的数个定位单元、 设 于背板与导光板之间且安装固定于定位单元上的反射片及设于导光板上的 光学膜片， 所述定位单元一端固定于导光板上， 另一端固定于背板上， 中 部设有一定位部， 所述反射片安装于该定位部上， 所述导光板与反射片之 间形成一间隙。
2、 如权利要求 1 所述的背光模组， 其中， 所述定位单元呈螺丝状， 其还包括： 连接杆、 设于连接杆两端的第一、 第二安装部， 所述定位部设 于连接杆中部， 所述第一、 第二安装部为圓形， 所述定位部为圓环形。
3、 如权利要求 2 所述的背光模组， 其中， 所述连接杆一端与第一安 装部一体成型， 另一端设有第一螺纹， 中部设有第二螺纹， 所述第二安装 部对应所述第一螺纹设有第一螺丝孔， 通过第一螺纹锁紧于第一螺丝孔进 而把第二安装部与连接杆连接在一起， 所述定位部内侧壁上对应所述第二 螺纹设有第二螺丝孔， 通过第二螺纹锁紧第二螺丝孔进而把定位部固定于 连接杆的中部。
4、 如权利要求 2 所述的背光模组， 其中， 所述第一安装部与导光板 一体成型。
5、 如权利要求 2 所述的背光模组， 其中， 所述第一安装部粘贴固定 于导光板上。
6、 如权利要求 5 所述的背光模组， 其中， 所述第二安装部设于背板 上， 所述连接杆通过攻牙锁附的方式固定于第二安装部。
7、 如权利要求 2 所述的背光模组， 其中， 所述第二安装部粘贴固定 于背板上。
8、 如权利要求 1 所述的背光模组， 其中， 所述定位单元设于导光板 相对两侧的边缘处， 所述反射片的边缘固定于定位部上。
9、 如权利要求 1 所述的背光模组， 其中， 所述反射片粘贴固定于所 述定位部上。
10、 如权利要求 1 所述的背光模组， 其中， 所述定位单元的数量为 8 个， 对称设于导光板的两侧。
11、 一种背光模组， 包括： 背板、 设于背板内的背光源、 设于背板内 且相对背光源设置的导光板、 设于背板与导光板之间的数个定位单元、 设 于背板与导光板之间且安装固定于定位单元上的反射片及设于导光板上的 光学膜片， 所述定位单元一端固定于导光板上， 另一端固定于背板上， 中 部设有一定位部， 所述反射片安装于该定位部上， 所述导光板与反射片之 间形成一间隙；
其中， 所述定位单元呈螺丝状， 其还包括： 连接杆、 设于连接杵两端 的第一、 第二安装部， 所述定位部设于连接杵中部， 所述第一、 第二安装 部为圓形， 所述定位部为圓环形；
其中， 所述连接杆一端与第一安装部一体成型， 另一端设有第一螺 纹， 中部设有第二螺纹， 所述第二安装部对应所述第一螺纹设有第一螺丝 孔， 通过第一螺紋锁紧于第一螺丝孔进而把第二安装部与连接杆连接在一 起， 所述定位部内侧壁上对应所述第二螺纹设有第二螺丝孔， 通过第二螺 纹锁紧第二螺丝孔进而把定位部固定于连接杆的中部；
其中， 所述第一安装部与导光板一体成型；
其中， 所述笫二安装部粘贴固定于背板上；
其中， 所述定位单元设于导光板相对两侧的边缘处， 所述反射片的边 缘固定于定位部上；
其中， 所述反射片粘贴固定于所述定位部上；
其中， 所述定位单元的数量为 8个， 对称设于导光板的两侧。
PCT/CN2012/082816 2012-09-26 2012-10-12 背光模组 Ceased WO2014047979A1 (zh)

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