WO2014036773A1 - 适于运输的背光模块 - Google Patents

适于运输的背光模块 Download PDF

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Publication number
WO2014036773A1
WO2014036773A1 PCT/CN2012/082623 CN2012082623W WO2014036773A1 WO 2014036773 A1 WO2014036773 A1 WO 2014036773A1 CN 2012082623 W CN2012082623 W CN 2012082623W WO 2014036773 A1 WO2014036773 A1 WO 2014036773A1
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WIPO (PCT)
Prior art keywords
backlight module
module suitable
backlight unit
backlight
transportation according
Prior art date
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Ceased
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PCT/CN2012/082623
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English (en)
French (fr)
Inventor
郭仪正
陈仕祥
周革革
俞刚
王甲强
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/703,028 priority Critical patent/US9229147B2/en
Publication of WO2014036773A1 publication Critical patent/WO2014036773A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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

Definitions

  • the present invention relates to an assembly of a liquid crystal display device, and more particularly to a backlight module suitable for transportation.
  • the liquid crystal display device has high contrast and is superior in displaying moving images, and thus has been widely used in electronic devices such as televisions, displays, mobile phones, and tablet computers.
  • FIG. 1 is a cross-sectional view showing a liquid crystal display device of the prior art.
  • the liquid crystal display device includes a front case 1, a liquid crystal panel 2, and a backlight unit.
  • the liquid crystal panel 2 is disposed between the front case 1 and the backlight unit.
  • the backlight unit includes a light guide plate 3, a reflection plate 4 disposed under the light guide plate 3, an optical film 5 disposed above the light guide plate 3, and a back plate 6 disposed under the reflection plate 4.
  • the backboard 6 is used to carry all the components of the backlight unit and to ensure the flatness of the backlight unit.
  • a plastic frame (not shown) is provided for pressing the optical film 5 during transportation to prevent the backlight unit from jumping off during transportation.
  • adding a frame will add additional component costs.
  • the technical problem to be solved by the present invention is that the backlight module in the prior art needs to adopt a plastic frame to fix the optical film, and the cost is increased, and provides a backlight module suitable for transportation, which can save the plastic frame and save cost. .
  • a backlight module suitable for transportation comprising a backlight unit, the backlight unit comprising: a backboard, a light source, and a backplane disposed on the backplane from bottom to bottom An optical film, a light guide plate, and a reflective plate; the backlight module further comprising a fixing tape for fixing the optical film, the fixing tape being closely coupled along at least one of a length and a width direction of the backlight unit Wraps around the outside of the backlight unit.
  • the fixing belt is a closed loop.
  • the fixing tape is made of an elastic material.
  • the fixing belt is a strap or an elastic ring.
  • the number of the fixing straps is plural.
  • the fixing tape is tightly wound around the outside of the backlight unit along the length and width directions of the backlight unit.
  • the backboard includes a bottom plate, and a side plate located at one end of the bottom plate and perpendicular to the bottom plate.
  • the width direction is an extending direction of the side panel.
  • the backlight unit further includes a light bar fixed on the side plate, and the light source is fixedly disposed on the light bar.
  • the backlight module suitable for transportation of the present invention has the following beneficial effects: no plastic frame is used to press the optical film, but a fixing belt is used for fixing, thereby eliminating the component cost of the plastic frame and preventing the The displacement of the optical film caused by vibration ensures that the winding force is moderate and avoids excessive extrusion of these optical components.
  • Figure 1 is a cross-sectional view of a prior art liquid crystal display device
  • Figure 2 is a cross-sectional view of a backlight unit in the present invention
  • FIG. 3 is a schematic diagram of a backlight module according to a first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a backlight module according to a second embodiment of the present invention.
  • Figure 5 is a schematic illustration of a backlight module in accordance with a third embodiment of the present invention.
  • the backlight module of the present invention mainly comprises: a backlight unit, and a fixing belt.
  • Figure 2 is a cross-sectional view of a backlight unit in the present invention.
  • the backlight unit 100 of the present invention includes a backing plate 101 including a bottom plate 101a and a side plate 101b, wherein the side plate 101b is located at one end of the bottom plate 101a and perpendicular to the bottom plate 101a.
  • a light bar 102 is fixedly disposed, and the light bar 102 is provided with a plurality of light sources 103, which may be LEDs.
  • a light guide plate 105 Above the bottom plate 101a, an optical film 104, a light guide plate 105, and a reflection plate 106 are provided in this order from top to bottom.
  • the side end of the light guide plate 105 faces the light source 103, so that the light emitted by the light source 103 enters the light guide plate 105, and after the light guide, the light is projected from the top surface of the light guide plate 105.
  • the optical film 104 is disposed on the top surface of the light guide plate 105, and may be a diffusion sheet, a prism sheet, or the like.
  • the optical film 104 may scatter the light guided by the light guide plate 105 more uniformly.
  • the reflector 106 is disposed under the light guide plate 105 and is in contact with the bottom surface of the light guide plate 105 for reflecting light reflected to the bottom surface of the light guide plate 105 to be reflected to the top surface of the light guide plate 105 and emitted, thereby increasing light. Utilization, increase brightness.
  • FIG. 3 is a schematic diagram of a backlight module 10 in accordance with a first embodiment of the present invention.
  • the backlight module 10 of the present invention further includes a fixing tape 200.
  • the fixing tape 200 is a closed ring shape and has a plurality of numbers, and is tightly wound around the backlight unit 100 in the width direction of the backlight unit 100 to fix the optical film 104. This width direction is also the extending direction of the side plate 101b.
  • the fixing tape 200 is made of an elastic material, so that the optical film 104, the light guide plate 105, and the reflection plate 106 can be closely fixed to the bottom plate 101a, in particular, the optical film 104 can be prevented from being displaced due to vibration. At the same time, it can also ensure that the winding force is moderate and avoid excessive extrusion of these optical components.
  • the strap 200 can be, for example, a strap or an elastic ring.
  • FIG. 4 is a schematic diagram of a backlight module 10 in accordance with a second embodiment of the present invention.
  • the backlight unit 100 and the fixing tape 200 of the second embodiment are similar to the first embodiment, except that the number of the fixing tapes 200 is plural, and along the length direction of the backlight unit 100.
  • the outer side of the backlight unit 100 is tightly wound with the width direction crossing each other.
  • the length direction is perpendicular to the width direction. This embodiment fixes the components of the backlight unit 100 from two directions.
  • FIG. 5 is a schematic diagram of a backlight module 10 in accordance with a third embodiment of the present invention.
  • the backlight unit 100 and the fixing tape 200 of the third embodiment are similar to the first embodiment, except that the number of the fixing tapes 200 is plural, and is closely along the length of the backlight unit 100. It is wound around the outside of the backlight unit 100.
  • the backlight module 10 of the present invention does not use a plastic frame to press the optical film 104, but uses the fixing tape 200 for fixing, thereby eliminating the assembly cost of the plastic frame and preventing the optical film 104 from being moved due to vibration.
  • the position ensures that the winding force is moderate and avoids excessive extrusion of these optical components.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Description

适于运输的背光模块 技术领域
本发明涉及液晶显示装置的组件，更具体地说，涉及一种适于运输的背光模块。
背景技术
液晶显示装置具有较高的对比度，且在显示运动图像方面具有优越性，因此已经被广泛用于电视、显示器、手机、平板电脑等电子设备中。
图1是现有技术中液晶显示装置的剖视图。如图1所示，该液晶显示装置包括前壳1、液晶面板2、以及背光单元。其中液晶面板2装设在前壳1和背光单元之间。背光单元包括导光板3、设置在导光板3下方的反射板4、设置在导光板3上方的光学膜片5、以及设置在反射板4下方的背板6。
其中背板6用于承载背光单元的所有组件并保证背光单元的平整度。在光学膜片5上方，设置有胶框（未图示），用于在运输过程中压住光学膜片5，以防止背光单元在运输的途中发生跳脱现象。但是，增加胶框会增加额外的组件成本。
发明内容
本发明要解决的技术问题在于，针对现有技术中的背光模块需要采用胶框来固定光学膜片、成本增加的缺陷，提供一种适于运输的背光模块，可省去胶框，节约成本。
本发明解决其技术问题所采用的技术方案是：构造一种适于运输的背光模块，包括背光单元，所述背光单元包括：背板、光源、以及上下到下依次设置在所述背板上的光学膜片、导光板、以及反射板；所述背光模块还包括用于固定所述光学膜片的固定带，所述固定带沿着所述背光单元的长度和宽度方向的至少一者紧密缠绕在所述背光单元外部。
根据本发明所述的适于运输的背光模块，所述固定带为封闭环状。
根据本发明所述的适于运输的背光模块，所述固定带由弹性材料制成。
根据本发明所述的适于运输的背光模块，所述固定带是打包带或者弹性圈。
根据本发明所述的适于运输的背光模块，所述固定带的数量为多个。
根据本发明所述的适于运输的背光模块，所述固定带沿着所述背光单元的长度和宽度方向、相互交叉地紧密缠绕在所述背光单元外部。
根据本发明所述的适于运输的背光模块，所述背板包括底板、以及位于所述底板的一端且与所述底板垂直的侧板。
根据本发明所述的适于运输的背光模块，所述宽度方向是所述侧板的延伸方向。
根据本发明所述的适于运输的背光模块，所述背光单元还包括固定在所述侧板上的灯条，所述光源固定设置在所述灯条上。
实施本发明的适于运输的背光模块，具有以下有益效果：没有采用胶框来压住光学膜片，而是采用了固定带来进行固定，省去了胶框的组件成本，同时可防止由于振动造成的光学膜片移位，可保证缠绕的力度适中，避免对这些光学元件造成过度挤压。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是现有技术中液晶显示装置的剖视图；
图2是本发明中背光单元的剖视图；
图3是根据本发明的第一实施例、背光模块的示意图；
图4是根据本发明的第二实施例、背光模块的示意图；
图5是根据本发明的第三实施例、背光模块的示意图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。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。
本发明的背光模块主要包括：背光单元、以及固定带。图2是本发明中背光单元的剖视图。如图2所示，本发明的背光单元100包括背板101，该背板101包括底板101a和侧板101b，其中侧板101b位于底板101a的一端，且与底板101a垂直。
在侧板101b上，固定设置有灯条102，在灯条102上设置有多个光源103，该光源103可以是LED。在底板101a上方，从上到下依次设有光学膜片104、导光板105、以及反射板106。其中导光板105的侧端正对光源103，使得光源103发出的光线进入导光板105，经过导光后从导光板105的顶面将光线投射出去。光学膜片104设置在导光板105的顶面上，可以为扩散片、棱镜片等，但不以此为限，该光学膜片104可以将导光板105导出的光线更加均匀地进行散射。反射板106设在导光板105下方，与导光板105的底面接触，用于对反射到导光板105的底面的光线进行反射，使其反射到导光板105的顶面并出射，从而增加光线的利用率、提高亮度。
图3是根据本发明的第一实施例、背光模块10的示意图。如图3所示，本发明的背光模块10还包括固定带200。在该第一实施例中，该固定带200为封闭环状，数量为多个，沿着背光单元100的宽度方向紧密缠绕在背光单元100外部，以固定所述光学膜片104。该宽度方向也就是侧板101b的延伸方向。
优选地，该固定带200由弹性材料制成，这样可以紧密地将光学膜片104、导光板105、以及反射板106固定在底板101a上，尤其可防止由于振动造成的光学膜片104移位，同时也可以保证缠绕的力度适中，避免对这些光学元件造成过度挤压。该固定带200可以是例如打包带或者弹性圈。
图4是根据本发明的第二实施例、背光模块10的示意图。如图4所示，该第二实施例的背光单元100、以及固定带200与第一实施例类似，不同的是，该固定带200的数量为多个，同时沿着背光单元100的长度方向和宽度方向相互交叉地紧密缠绕在背光单元100外部。其中长度方向与宽度方向垂直。该实施例从两个方向对背光单元100的各组件进行固定。
图5是根据本发明的第三实施例、背光模块10的示意图。如图5所示，该第三实施例的背光单元100、以及固定带200与第一实施例类似，不同的是，该固定带200的数量为多个，沿着背光单元100的长度方向紧密缠绕在背光单元100外部。
本发明的背光模块10没有采用胶框来压住光学膜片104，而是采用了固定带200来进行固定，省去了胶框的组件成本，同时可防止由于振动造成的光学膜片104移位，可保证缠绕的力度适中，避免对这些光学元件造成过度挤压。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种适于运输的背光模块，包括背光单元，所述背光单元包括：背板、光源、以及上下到下依次设置在所述背板上的光学膜片、导光板、以及反射板；其特征在于，所述背光模块还包括用于固定所述光学膜片的固定带，所述固定带沿着所述背光单元的长度和宽度方向的至少一者紧密缠绕在所述背光单元外部。
  2. 根据权利要求1所述的适于运输的背光模块，其特征在于，所述固定带为封闭环状。
  3. 根据权利要求1所述的适于运输的背光模块，其特征在于，所述固定带由弹性材料制成。
  4. 根据权利要求1所述的适于运输的背光模块，其特征在于，所述固定带是打包带或者弹性圈。
  5. 根据权利要求1所述的适于运输的背光模块，其特征在于，所述固定带的数量为多个。
  6. 根据权利要求1所述的适于运输的背光模块，其特征在于，所述固定带沿着所述背光单元的长度和宽度方向、相互交叉地紧密缠绕在所述背光单元外部。
  7. 根据权利要求1所述的适于运输的背光模块，其特征在于，所述背板包括底板、以及位于所述底板的一端且与所述底板垂直的侧板。
  8. 根据权利要求7所述的适于运输的背光模块，其特征在于，所述宽度方向是所述侧板的延伸方向。
  9. 根据权利要求7所述的适于运输的背光模块，其特征在于，所述背光单元还包括固定在所述侧板上的灯条，所述光源固定设置在所述灯条上。
PCT/CN2012/082623 2012-09-06 2012-10-09 适于运输的背光模块 Ceased WO2014036773A1 (zh)

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CN2012103272742A CN102853340A (zh) 2012-09-06 2012-09-06 适于运输的背光模块
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