WO2014075329A1 - 一种背光模组及液晶显示装置 - Google Patents

一种背光模组及液晶显示装置 Download PDF

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Publication number
WO2014075329A1
WO2014075329A1 PCT/CN2012/085057 CN2012085057W WO2014075329A1 WO 2014075329 A1 WO2014075329 A1 WO 2014075329A1 CN 2012085057 W CN2012085057 W CN 2012085057W WO 2014075329 A1 WO2014075329 A1 WO 2014075329A1
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WO
WIPO (PCT)
Prior art keywords
light bar
light
backlight module
control
root
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/CN2012/085057
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English (en)
French (fr)
Inventor
李全
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
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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 US13/807,181 priority Critical patent/US9041878B2/en
Publication of WO2014075329A1 publication Critical patent/WO2014075329A1/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
    • G02B6/0091—Positioning aspects of the light source relative to 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
    • G02B6/0085—Means for removing heat created by the light source from the package

Definitions

  • the invention belongs to the field of liquid crystal display, and more particularly to a backlight module and a liquid crystal display device.
  • the liquid crystal display device generally includes a liquid crystal display panel and a backlight module. Since the liquid crystal display panel cannot emit light, it is required to provide a surface light source with uniform illumination by the backlight module, and the light source of the edge-lit backlight module is generally a light bar. Since the heat generation of the light bar is high, it is necessary to provide a light bar heat sink to improve heat dissipation efficiency.
  • the distance between the light-emitting surface of the light bar and the light-incident surface of the light guide plate is called the light-coupled distance, which is an important optical parameter. When the light-coupled distance changes, the optical performance of the backlight module changes, in order to improve the backlight. The optical taste of the module requires strict control of the coupling distance.
  • the method used in the prior art is to provide a metal block 4 on the light bar 1, and the metal block 4 is in contact with the light incident surface of the light guide plate 3.
  • the coupling distance between the light bar 1 and the light guide plate 3 is controlled by designing the thickness of the metal block 4, but since the metal block is fixed on the light bar by the patch technology, the bonding strength is low, and is often not firm, in the backlight mode. When the group is impacted by an external force, it is easy to fall off, thereby losing the effect of controlling the coupling distance.
  • the light bar is an electronic component, when it is used as a structural member, deformation is likely to occur, thereby affecting electrical performance.
  • the technical problem to be solved by the present invention is to provide a backlight module and a liquid crystal display device, and the backlight module can still maintain a stable coupling distance when subjected to a large external force.
  • a backlight module comprising: a light bar, a light bar heat sink and a light guide plate, wherein the light bar and the light guide plate are provided with a coupling distance
  • the backlight module further comprises a control unit a control member for coupling a light distance
  • the light bar is provided with a through hole
  • the control member passes through the through hole
  • the control member is disposed on the heat sink of the light bar
  • the light guide plate is provided by the heat sink of the light bar a fixing force of the position
  • the control member includes a body and a portion
  • the root portion has a cross section larger than a cross section of the body, and the root portion is clamped at
  • a heat conducting tape is disposed between the light bar and the light bar heat dissipating member, the root height of the control member is greater than the thickness of the heat conducting tape
  • the light bar heat dissipating member is further provided with a concave surface
  • a backlight module including a light bar, a light bar heat sink, and a light guide plate, wherein the light bar and the light guide plate are provided with a coupling distance, and further includes a control member for coupling the light distance, the light bar is provided with a through hole, the control member passes through the through hole, the control member is disposed on the heat sink of the light bar, and the position of the light guide plate is controlled by the heat sink of the light bar The fixing force.
  • control member comprises a body having a cross section larger than a cross section of the body, the root being clamped between the light bar and the light bar heat sink.
  • a thermal conductive tape is disposed between the light bar and the light bar heat dissipating member, and the root height of the control member is equal to the thickness of the thermal conductive tape.
  • a thermal conductive tape is disposed between the light bar and the light bar heat dissipating member, the root height of the control member is greater than the thickness of the thermal conductive tape, and the light bar heat dissipating member is further provided with a groove, and the control member is The root is housed in the slot. If the height of the root of the control member is greater than the thickness of the thermal conductive tape, it is necessary to provide a groove on the heat dissipation member of the light bar to accommodate the root of the control member.
  • control member is a screw
  • the light strip heat dissipating member is provided with a threaded hole, and the control member is screwed at the threaded hole.
  • the rod body of the screw is provided with a step, the front end of the step is not provided with an external thread, and the rear end of the step is provided with an external thread.
  • the light strip heat sink is provided with a through hole, and the root of the control member is riveted to the light strip heat sink through the through hole.
  • the number of the control members is two, and is distributed at both ends of the light bar. It is used to ensure uniformity of the coupling distance between the light bar and the light guide plate, and is not narrow at one end and narrow at the end.
  • control member has a circular cross section. Since the rotor is easy to manufacture, the manufacturing cost can be reduced.
  • control member is a metal member or a rigid plastic member.
  • a liquid crystal display device comprising the backlight module described above.
  • the beneficial effects of the present invention are as follows:
  • the control component for controlling the coupling distance on the backlight module of the present invention is not disposed on the light bar, but is disposed on the heat sink of the light bar, and no longer allows the light bar to bear the control light guide plate
  • the fixed force of the position, but the force is transferred to the heat sink of the light bar.
  • the heat sink of the light bar is generally an aluminum extruded profile, has a certain thickness, high strength, and can withstand a large fixing force, so that the light bar is no longer subject to The external force affects, is not easily deformed, and does not affect the electrical performance.
  • FIG. 1 is a schematic structural view of a backlight module in the prior art
  • FIG. 2 is a cross-sectional view showing a first embodiment of the backlight module of the present invention
  • FIG. 3 is a schematic cross-sectional view showing another embodiment of the backlight module of the present invention.
  • FIG 4 is a schematic structural view of the control member of Figure 2;
  • FIG. 5 is a cross-sectional view showing a second embodiment of the backlight module of the present invention.
  • Figure 6 is a schematic view showing the structure of the control member of Figure 5.
  • the present invention discloses a liquid crystal display device including a backlight module.
  • the backlight module includes a light bar 1, a light bar heat sink 2, and a light guide plate 3.
  • the light bar 1 is provided with a coupling distance between the light bar 1 and the light guide plate 3, and the backlight module further includes a control member 5 for controlling the light coupling distance, and the light bar 1 is provided with a through hole 11
  • the control member 5 passes through the through hole 11, and the control member 5 is disposed on the light bar heat dissipating member 2, and the light bar heat dissipating member 2 provides a fixing force for controlling the position of the light guide plate 3.
  • control member 5 includes a body 51 having a cross section larger than a cross section of the body 51, and the root portion 52 being clamped to the light bar 1 and the light bar heat sink. 2
  • the stability of the control member is not affected, and the length of the body 51 of the control member 5 is equal to the sum of the thickness of the light bar 1 and the coupling distance.
  • the control member 5 for controlling the coupling distance on the backlight module of the present invention is not disposed on the light bar, but is disposed on the light bar heat sink 2, and no longer allows the light bar 1 to be fixed to control the position of the light guide plate 3.
  • Force, but transfer the force to the light strip heat sink 2, the light strip heat sink 2 is generally an aluminum extruded profile, has a certain thickness, high strength, can withstand a large fixed force, so that the light strip 1 is no longer Affected by external forces, it is not easily deformed and will not affect electrical performance.
  • control member 5 Since the control member 5 is mounted in the backlight module, the control member 5 may be a metal member or a rigid plastic member. In the prior art, since the patch technology is employed, only metal blocks can be used because the plastic parts may be melted during the soldering process.
  • the number of the control members 5 is two, which are distributed at the two ends of the light bar 1 for ensuring uniformity of the coupling distance between the light bar 1 and the light guide plate 3, and not one end.
  • the width is narrow at one end.
  • the number of control members can be two or more, and they are all distributed on the light bar.
  • the control member 5 has a circular cross section, and since the rotary body is easy to manufacture, the manufacturing cost can be reduced.
  • a thermal conductive tape 6 is disposed between the light bar 1 and the light bar heat dissipating member 2.
  • the height of the root portion 52 of the control member is equal to the thickness of the thermal conductive tape 6, the light bar heat dissipating member 2 is not changed.
  • the control member 5 can be assembled into the backlight module. However, if the height of the root portion 52 of the control member 5 is greater than the thickness of the thermal conductive tape 6, it is necessary to provide a recess 21 on the light strip heat sink 2 to accommodate the root of the control member. 52.
  • control member 5 is a screw
  • the light strip heat dissipation member 2 is provided with a threaded hole 22 .
  • the control member 5 is screwed at the threaded hole 22.
  • the rod body of the screw is provided with a step, and the step front end 53 is used to pass through the light bar heat dissipating member 2 and the light bar 1, so that it is not necessary to provide an external thread, and if the thread is still provided, the sharp end of the thread end
  • the light guide plate 3 is directly contacted, and the light guide plate 3 is damaged; the rear end 54 of the step is provided with an external thread for screwing on the threaded hole 22 of the heat sink of the light bar, and other structures and beneficial effects are the same as those of the embodiment.
  • the control member may also be riveted to the heat sink of the light bar, and the root of the control member is riveted to the heat sink of the light bar through the through hole, and the same beneficial effect can be achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种液晶显示装置和背光模组，其中背光模组包括灯条（1）、灯条散热件（2）、导光板（3）、以及用于控制耦光距离的控制件（5）。控制件（5）穿过灯条（1）上的通孔（11），设置在灯条散热件（2）上。该背光模组和液晶显示装置通过采用灯条散热件提供控制导光板位置的固定力，强度高，不易变形，不会影响电学性能。

Description

一种背光模组及液晶显示装置
【技术领域】
本发明属于液晶显示领域， 更具体的说， 涉及一种背光模组及液晶显示装 置。
【背景技术】
现有技术中液晶显示装置一般包括液晶显示面板和背光模组， 由于液晶显 示面板不能发光， 所以需要由背光模组提供发光均匀的面光源， 侧光式背光模 组的光源一般为灯条， 由于灯条发热量较高， 所以需要设置灯条散热件以提高 散热效率。 灯条的发光面与导光板的入光面之间的距离被称为耦光距离， 是重 要的光学参数， 当耦光距离发生改变时， 背光模组的光学性能会跟着改变， 为 了提高背光模组的光学品味， 需要严格控制耦光距离， 如图 1 所示， 现有技术 中采用的方法是在灯条 1上设置金属块 4, 金属块 4与导光板 3的入光面接触， 通过设计金属块 4的厚度来控制灯条 1与导光板 3之间的耦光距离， 但是由于 金属块是通过贴片技术固定在灯条上， 结合强度较低， 往往不牢固， 在背光模 组受到外力沖击时容易脱落， 从而失去控制耦光距离的作用； 另外灯条为电子 类零件， 被用作结构件时， 容易产生变形， 从而影响电学性能。
【发明内容】
本发明所要解决的技术问题是提供一种背光模组及液晶显示装置， 所述背 光模组在受到较大外力沖击时， 依然能操持稳定的耦光距离。
本发明的技术方案为： 一种背光模组， 包括： 灯条、 灯条散热件和导光板， 所述灯条与导光板之间设有耦光距离， 背光模组还包括用于控制所述耦光距离 的控制件， 所述灯条上设有通孔， 所述控制件穿过所述通孔， 所述控制件设置 在灯条散热件上， 由灯条散热件提供控制导光板位置的固定力， 所述控制件包 括一本体和一根部， 所述根部的横截面大于本体的横截面， 所述根部被夹紧在 灯条和灯条散热件之间， 所述灯条和灯条散热件之间设置有导热胶带， 所述控 制件的根部高度大于导热胶带的厚度， 所述灯条散热件上还设有凹槽， 所述控 制件的根部容置在 槽内， 所述控制件数量为两个， 分布在灯条的两端位置， 所述控制件为硬质塑料件。
本发明的另一种技术方案为： 一种背光模组， 包括灯条、 灯条散热件和导 光板， 所述灯条与导光板之间设有耦光距离， 还包括用于控制所述耦光距离的 控制件， 所述灯条上设有通孔， 所述控制件穿过所述通孔， 所述控制件设置在 灯条散热件上， 由灯条散热件提供控制导光板位置的固定力。
优选的， 所述控制件包括一本体和一根部， 所述根部的横截面大于本体的 横截面， 所述根部被夹紧在灯条和灯条散热件之间。
优选的， 所述灯条和灯条散热件之间设置有导热胶带， 所述控制件的根部 高度等于导热胶带的厚度。
优选的， 所述灯条和灯条散热件之间设置有导热胶带， 所述控制件的根部 高度大于导热胶带的厚度， 所述灯条散热件上还设有凹槽， 所述控制件的根部 容置在 槽内。 若控制件的根部高度大于导热胶带的厚度时， 就需要在灯条散 热件上设置凹槽， 以容置控制件的根部。
优选的， 所述控制件为一螺釘， 所述灯条散热件上设有螺纹孔， 所述控制 件螺接在螺纹孔处。
优选的， 所述螺釘的杆体设有台阶， 所述台阶前端不设置外螺纹， 所述台 阶后端设有外螺纹。
优选的， 所述灯条散热件上设有通孔， 所述控制件根部穿过所述通孔被铆 接在灯条散热件上。
优选的， 所述控制件数量为两个， 分布在灯条的两端位置。 用于保证灯条 与导光板之间耦光距离的均匀一致性， 不会一端宽一端窄。
优选的， 所述控制件的横截面为圓形。 因为回转体容易制作， 可以降低制 造成本。 优选的， 所述控制件为金属件或硬质塑料件。
本发明还公开了另一种技术方案： 一种液晶显示装置， 包括上面所述的背 光模组。
本发明的有益效果为： 本发明背光模组上用于控制所述耦光距离的控制件 不是设置在灯条上， 而是设置在灯条散热件上， 不再让灯条承受控制导光板位 置的固定力， 而是把力转移到灯条散热件上， 灯条散热件一般为铝质挤出型材， 具有一定厚度， 强度高， 能够承受较大的固定力， 这样灯条不再受外力影响， 不易变形， 不会影响电学性能。
【附图说明】
图 1是现有技术中背光模组的结构示意图；
图 2是本发明所述背光模组实施例一的剖面示意图；
图 3是本发明所述背光模组实施例一的另一剖面的示意图；
图 4是图 2中控制件的结构示意图；
图 5是本发明所述背光模组实施例二的剖面示意图；
图 6是图 5中控制件的结构示意图。
【具体实施方式】
本发明公开一种液晶显示装置， 包括背光模组， 作为本发明背光模组的实 施例一， 如图 2至 4所示， 背光模组包括灯条 1、 灯条散热件 2和导光板 3 , 所 述灯条 1与导光板 3之间设有耦光距离， 背光模组还包括用于控制所述耦光距 离的控制件 5 , 所述灯条 1上设有通孔 11 , 所述控制件 5穿过所述通孔 11 , 所 述控制件 5设置在灯条散热件 2上， 由灯条散热件 2提供控制导光板 3位置的 固定力。
在本实施例中， 所述控制件 5包括一本体 51和一根部 52, 所述根部 52的 横截面大于本体 51的横截面， 所述根部 52被夹紧在灯条 1和灯条散热件 2之 间， 即使背光模组受到撞击时， 不会影响控制件的稳定性， 所述控制件 5 的本 体 51长度等于灯条 1的厚度与耦光距离之和。
本发明背光模组上用于控制所述耦光距离的控制件 5不是设置在灯条上， 而是设置在灯条散热件 2上， 不再让灯条 1承受控制导光板 3位置的固定力， 而是把力转移到灯条散热件 2上， 灯条散热件 2—般为铝质挤出型材， 具有一 定厚度， 强度高， 能够承受较大的固定力， 这样灯条 1 不再受外力影响， 不易 变形， 不会影响电学性能。
由于控制件 5是安装到背光模组中的， 所述控制件 5即可以为金属件， 也 可以为硬质塑料件。 而现有技术中， 由于采用贴片技术， 只能采用金属块， 因 为塑料件可能会在焊接过程中熔化。
在本实施例中， 所述控制件 5数量为两个， 分布在灯条 1的两端位置， 用 于保证灯条 1与导光板 3之间耦光距离的均勾一致性， 不会一端宽一端窄。 当 然， 控制件的数量可以为两个以上， 均勾地分布在灯条上。 另外所述控制件 5 的横截面为圓形， 因为回转体容易制作， 可以降低制造成本。
在本实施例中，所述灯条 1和灯条散热件 2之间设置有导热胶带 6, 当所述 控制件的根部 52高度等于导热胶带 6的厚度时， 不改动灯条散热件 2就可以把 控制件 5装配到背光模组中， 但是若控制件 5的根部 52高度大于导热胶带 6的 厚度时， 就需要在灯条散热件 2上设置凹槽 21 , 以容置控制件的根部 52。
作为本发明背光模组的实施例二， 如图 5和图 6所示， 与实施例一不同之 处在于所述控制件 5为一螺釘， 所述灯条散热件 2上设有螺纹孔 22, 所述控制 件 5螺接在螺纹孔 22处。
在本实施例中， 所述螺釘的杆体设有台阶， 所述台阶前端 53用于穿过灯条 散热件 2和灯条 1 , 所以不必设置外螺纹， 如果仍然设置螺纹， 螺紋尾端的尖角 会直接接触导光板 3 , 会损伤导光板 3; 所述台阶后端 54设有外螺纹， 用于螺 接在灯条散热件的螺纹孔 22上， 其它结构及有益效果均与实施例二一致， 此处 不再赘述。 在本实施例中， 所述控制件还可以被铆接在灯条散热件上， 控制件的根部 穿过所述通孔被铆接在灯条散热件上， 能实现同样的有益效果。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干筒单推演或替 换， 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种背光模组， 包括： 灯条、 灯条散热件和导光板， 所述灯条与导光板 之间设有耦光距离， 背光模组还包括用于控制所述耦光距离的控制件， 所述灯 条上设有通孔， 所述控制件穿过所述通孔， 所述控制件设置在灯条散热件上， 由灯条散热件提供控制导光板位置的固定力， 所述控制件包括一本体和一根部， 所述根部的横截面大于本体的横截面， 所述根部被夹紧在灯条和灯条散热件之 间， 所述灯条和灯条散热件之间设置有导热胶带， 所述控制件的根部高度大于 导热胶带的厚度， 所述灯条散热件上还设有凹槽， 所述控制件的根部容置在凹 槽内， 所述控制件数量为两个， 分布在灯条的两端位置， 所述控制件为硬质塑 料件。
2、 一种背光模组， 包括： 灯条、 灯条散热件和导光板， 所述灯条与导光板 之间设有耦光距离， 背光模组还包括用于控制所述耦光距离的控制件， 所述灯 条上设有通孔， 所述控制件穿过所述通孔， 所述控制件设置在灯条散热件上， 由灯条散热件提供控制导光板位置的固定力。
3、 根据权利要求 2所述的背光模组， 其中， 所述控制件包括一本体和一根 部， 所述根部的横截面大于本体的横截面， 所述根部被夹紧在灯条和灯条散热 件之间。
4、 根据权利要求 3所述的背光模组， 其中， 所述灯条和灯条散热件之间设 置有导热胶带， 所述控制件的根部高度等于导热胶带的厚度。
5、 根据权利要求 3所述的背光模组， 其中， 所述灯条和灯条散热件之间设 置有导热胶带， 所述控制件的根部高度大于导热胶带的厚度， 所述灯条散热件 上还设有凹槽， 所述控制件的根部容置在凹槽内。
6、 根据权利要求 2所述的背光模组， 其中， 所述控制件为一螺釘， 所述灯 条散热件上设有螺纹孔， 所述控制件螺接在螺纹孔处。
7、 根据权利要求 6所述的背光模组， 其中， 所述螺釘的杆体设有台阶， 所 述台阶前端不设置外螺纹， 所述台阶后端设有外螺纹。
8、 根据权利要求 2所述的背光模组， 其中， 所述灯条散热件上设有通孔， 所述控制件根部穿过所述通孔被铆接在灯条散热件上。
9、 根据权利要求 2所述的背光模组， 其中， 所述控制件数量为两个， 分布 在灯条的两端位置。
10、 根据权利要求 2所述的背光模组， 其中， 所述控制件为金属件或硬质 塑料件。
11、 一种液晶显示装置， 包括背光模组， 背光模组包括： 灯条、 灯条散热 件和导光板， 所述灯条与导光板之间设有耦光距离， 背光模组还包括用于控制 所述耦光距离的控制件， 所述灯条上设有通孔， 所述控制件穿过所述通孔， 所 述控制件设置在灯条散热件上， 由灯条散热件提供控制导光板位置的固定力。
12、 根据权利要求 11所述的液晶显示装置， 其中， 所述控制件包括一本体 和一根部， 所述根部的横截面大于本体的横截面， 所述根部被夹紧在灯条和灯 条散热件之间。
13、 根据权利要求 12所述的液晶显示装置， 其中， 所述灯条和灯条散热件 之间设置有导热胶带， 所述控制件的根部高度等于导热胶带的厚度。
14、 根据权利要求 12所述的液晶显示装置， 其中， 所述灯条和灯条散热件 之间设置有导热胶带， 所述控制件的根部高度大于导热胶带的厚度， 所述灯条 散热件上还设有 槽， 所述控制件的根部容置在 槽内。
15、 根据权利要求 11所述的液晶显示装置， 其中， 所述控制件为一螺釘， 所述灯条散热件上设有螺纹孔， 所述控制件螺接在螺纹孔处。
16、 根据权利要求 15所述的液晶显示装置， 其中， 所述螺釘的杆体设有台 阶， 所述台阶前端不设置外螺纹， 所述台阶后端设有外螺纹。
17、 根据权利要求 11所述的液晶显示装置， 其中， 所述灯条散热件上设有 通孔， 所述控制件根部穿过所述通孔被铆接在灯条散热件上。
18、根据权利要求 11所述的液晶显示装置， 其中， 所述控制件数量为两个， 分布在灯条的两端位置。
19、 根据权利要求 11所述的液晶显示装置， 其中， 所述控制件为金属件。
20、 根据权利要求 11所述的液晶显示装置， 其中， 所述控制件为硬质塑料 件。
PCT/CN2012/085057 2012-11-13 2012-11-22 一种背光模组及液晶显示装置 Ceased WO2014075329A1 (zh)

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