WO2013053178A1 - 一种背光模组的背板、背光模组及液晶显示装置 - Google Patents

一种背光模组的背板、背光模组及液晶显示装置 Download PDF

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Publication number
WO2013053178A1
WO2013053178A1 PCT/CN2011/083872 CN2011083872W WO2013053178A1 WO 2013053178 A1 WO2013053178 A1 WO 2013053178A1 CN 2011083872 W CN2011083872 W CN 2011083872W WO 2013053178 A1 WO2013053178 A1 WO 2013053178A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
backlight module
plate
dissipation plate
support plate
Prior art date
Application number
PCT/CN2011/083872
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English (en)
French (fr)
Inventor
郭仪正
周革革
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/378,994 priority Critical patent/US20130093991A1/en
Publication of WO2013053178A1 publication Critical patent/WO2013053178A1/zh

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Classifications

    • 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
    • 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
    • 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
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • Back plate of backlight module, backlight module and liquid crystal display device is
  • the present invention relates to the field of liquid crystal display, and more particularly to a back panel, a backlight module and a liquid crystal display device of a backlight module.
  • the liquid crystal display device comprises a display panel and a backlight module for providing a light source to the display panel, and a back plate is arranged at the bottom of the backlight module for supporting the internal device and the sealing module to provide necessary protection.
  • the backing plate of the existing backlight module is generally made of the same material, and the material used is aluminum plate, iron plate or plastic. If the entire backplane is made of iron plates, it is necessary to add heat-dissipating components, which increases the cost. If aluminum plates are used for manufacturing, there is no additional use of heat-dissipating components. Although the heat-conducting effect is better than that of iron plates, the cost of aluminum plates is also high. Will increase costs.
  • the technical problem to be solved by the present invention is to provide a back panel, a backlight module and a liquid crystal display device of a backlight module with good heat dissipation performance and low cost.
  • a backplane of a backlight module includes a heat dissipation board and a support board connected to the heat dissipation board; the heat conduction performance of the heat dissipation board is greater than the heat conduction performance of the support board.
  • the heat dissipation plate and the support plate are made of metal. Both plates are made of metal, providing a more versatile connection and higher strength.
  • the heat dissipation plate and the support plate have the same shape and area.
  • the technical solution can simultaneously press the heat dissipation plate and the support plate in the same sleeve mold at the time of production, thereby reducing the processing steps, improving the production efficiency, reducing the production cost, and reducing the use of the mold. , saving mold costs.
  • the heat dissipation plate and the support plate are fixed by riveting or screw connection.
  • the heat sink and the support plate are a specific embodiment.
  • the heat dissipation plate and the support plate are fixed by means of super glue bonding.
  • This is another specific embodiment of the heat sink and the support plate.
  • the heat dissipation plate and the support plate are fixed by a bite manner, and the heat dissipation plate and the support plate are folded at a joint to form a card slot and a card plate, and the card plate of the heat dissipation plate is embedded in the The card slot of the support plate, at the same time, the card plate of the support plate is also embedded in the card slot of the heat dissipation plate to form the undercut connection.
  • the heat dissipation plate is disposed in an area where the backlight module LED light source fixing device is located.
  • LED is the main heating device of the backlight module.
  • the LED will be fixed on the LED light source fixing device such as aluminum extrusion. Therefore, the heat dissipation plate is arranged for the LED light source fixing device area, which is more targeted and can further reduce heat dissipation. The area of the board reduces costs.
  • the backlight module LED light source fixing device is aluminum extrusion; the heat dissipation plate is in contact with the aluminum extrusion.
  • the technical solution can transfer heat from the aluminum extrusion to the heat dissipation plate by means of heat conduction, and is radiated to the outside air through the heat dissipation plate.
  • a backlight module includes the back panel of the backlight module described above.
  • a liquid crystal display device includes the above backlight module.
  • the inventors found through research that the heat generated by the backlight module is not uniform, and only a part of the back plate plays a role of heat dissipation, and the other part does not play a role of heat dissipation but supports.
  • heat dissipation performance is required.
  • Metal, and for the supporting back plate, as long as a common material having a certain strength is used, the present invention is composed of a metal having a good heat dissipation property and an ordinary low-cost material according to different heat generating regions of the backlight module, so that It can reduce the cost while ensuring heat dissipation performance.
  • 1 is a schematic view showing the heat dissipation plate and the support plate of the present invention
  • 2 is a schematic view of the heat dissipation plate and the support plate of the present invention assembled
  • Figure 3 is a schematic view of the present invention using the same mold to simultaneously process the heat sink and the support plate;
  • FIG. 4 is a schematic view showing the heat dissipation plate and the support plate of the present invention fixed by a riveting process
  • FIG. 5 is a schematic view showing the fixing of the heat dissipation plate and the support plate of the present invention by using a rivet-free manner
  • FIG. 6 is a schematic view showing the fixing of the heat dissipation plate and the support plate of the present invention by using a rivet riveting manner
  • FIG. 7 is a schematic view showing the fixing of the heat dissipation plate and the support plate of the present invention by a strong adhesive bonding method
  • Figure 8 is a schematic view showing the fixing of the heat dissipation plate and the support plate of the present invention by screw connection;
  • Figure 9 is a schematic view showing the fixing of the heat dissipation plate and the support plate of the present invention by means of a snap joint;
  • a liquid crystal display device includes a backlight module.
  • the back of the backlight module is provided with a back plate for supporting internal components and a sealing module to provide necessary protection.
  • the back plate of the backlight module includes a heat dissipation plate 1 and a support plate 2 connected to the heat dissipation plate 1; the heat conduction performance of the heat dissipation plate 1 is greater than the heat conduction performance of the support plate 2.
  • the heat sink 1 can be made of a metal having good heat dissipation properties such as aluminum; and the support plate 2 can be made of a metal material such as a steel plate which is relatively inexpensive, or a low-cost material having a certain strength such as plastic.
  • the heat dissipation plate 1 is disposed in an area where the backlight module LED light source fixing device is located.
  • LED is the main heating device of the backlight module.
  • the LEDs are fixed on the LED light source fixing device such as aluminum extrusion. Taking aluminum extrusion as an example, the aluminum can be squeezed and mounted on the heat dissipation plate 1 of the back plate, so that the heat conduction can be quickly performed. The heat is transferred from the aluminum to the heat sink 1 and is radiated to the outside air through the heat sink 1.
  • the shape and the area of the heat dissipation plate 1 and the support plate 2 are kept consistent, so that the heat dissipation plate 1 and the support plate 2 can be placed in the same sleeve mold at the same time during production, and the molding is reduced.
  • the processing steps increase the production efficiency and reduce the production cost; in addition, the use of the mold is reduced, and the mold cost is saved.
  • the heat dissipation plate 1 and the support plate 2 can be connected by riveting (as shown in FIG. 5 and FIG. 6), super glue 4 (as shown in FIG. 7), and screw 5 (shown in FIG. 8).
  • the splicing joints (as shown in FIG. 9) are fixed; the rivets may include riveting without rivets 3 (as shown in FIG.
  • the fixing manner of the present invention is further explained in a bite manner: as shown in FIG. 9, the heat dissipation plate 1 and the support plate 2 are fixed by a bite manner, and the heat dissipation plate 1 and the support plate 2 are at a joint. Folding, forming a card slot and a card plate, the card plate of the heat dissipation plate 1 is embedded in the card slot of the support plate 2, and at the same time, the card plate of the support plate 2 is also embedded in the card slot of the heat dissipation plate 1 to form The undercut joints are connected.
  • This embodiment eliminates the need for additional fixing materials, reduces assembly steps, and improves assembly efficiency.

Abstract

一种背光模组的背板、背光模组及液晶显示装置。所述背光模组的背板包括散热性能好的散热板（1）、与散热板（1）连接的低成本的支撑板（2）；所述散热板（1）的热传导性能大于所述支撑板（2）的热传导性能。根据背光模组发热区域的不同，所述背光模组的背板采用散热性能好的金属和普通低成本的材料拼装组成，从而在保障散热性能的同时降低成本。

Description

一种背光模组的背板、 背光模组及液晶显示装置
【技术领域】
本发明涉及液晶显示领域， 更具体的说， 涉及一种背光模组的背板、 背光 模组及液晶显示装置。
【背景技术】
液晶显示装置包括显示面板以及给显示面板提供光源的背光模组， 背光模 组底部设有背板， 用于支撑内部器件以及密封模组， 提供必要的防护。 现有背 光模组的背板一般是由同一种材料制作而成， 所用的材料是铝板、 铁板或塑胶。 如果整个背板采用铁板来制作， 还需要增加散热元件， 这样增加成本； 如果采 用铝板来制作， 不额外增加使用散热元件， 虽然其导热效果比铁板的好， 但铝 板成本高， 同样也会增加成本。
【发明内容】
本发明所要解决的技术问题是提供一种散热性能好、 成本低的背光模组的 背板、 背光模组及液晶显示装置。
本发明的目的是通过以下技术方案来实现的：
一种背光模组的背板， 所述背光模组的背板包括散热板、 与散热板连接的 支撑板； 所述散热板的热传导性能大于所述支撑板的热传导性能。
优选的， 所述散热板和所述支撑板都采用金属材质。 两种板都采用金属， 可以提供更多样化的连接方式， 而且强度较高。
优选的， 所述散热板和所述支撑板形状和面积保持一致。 该技术方案可以 在生产的时候将所述散热板和所述支撑板放在同一个套模具中同时沖压成型， 这样可以减少加工步骤， 提高生产效率， 降低生产成本； 另外还减少了模具的 使用， 节省模具费用。
优选的， 所述散热板和所述支撑板通过铆接或螺杆连接的方式固定。 此为 所述散热板和所述支撑板一种具体实施方式。
优选的， 所述散热板和所述支撑板通过强力胶粘贴的方式固定。 此为所述 散热板和所述支撑板另外一种具体实施方式。
优选的， 所述散热板和所述支撑板通过咬缝方式固定， 所述散热板和所述 支撑板在连接处折边， 形成卡槽和卡板， 所述散热板的卡板嵌入所述支撑板的 卡槽， 同时， 所述支撑板的卡板也嵌入所述散热板的卡槽， 形成所述的咬缝连 接。 此为所述散热板和所述支撑板第三种具体实施方式， 该实施方式中无需采 用额外的固定材料， 减少组装步骤， 提高组装效率。
优选的， 所述散热板设置在背光模组 LED灯源固定装置所在区域。 LED为 背光模组的主要发热器件， 而一般来说， LED会固定在铝挤等 LED灯源固定装 置上， 因此针对 LED灯源固定装置区域设置散热板， 更优针对性， 可以进一步 缩减散热板的面积， 降低成本。
优选的， 所述背光模组 LED灯源固定装置为铝挤； 所述散热板与所述铝挤 相接触。 该技术方案可以通过热传导的方式将热量从铝挤传递到散热板上， 通 过散热板发散到外部空气中。
一种背光模组， 包括上述的背光模组的背板。
一种液晶显示装置， 包括上述的背光模组。
发明人通过研究发现， 背光模组的发热并不是均匀的， 而背板中只有一部 分发挥散热作用， 另外一部分没有发挥散热作用而是支撑作用， 对于散热部分 的背板， 需要采用散热性能好的金属， 而对于支撑作用的背板， 只要采用具有 一定强度的普通材料即可， 本发明根据背光模组发热区域的不同， 分别采用散 热性能好的金属和普通低成本的材料拼装组成， 这样就可以在保障散热性能的 同时降低成本。
【附图说明】
图 1是本发明散热板和支撑板分列示意图； 图 2是本发明散热板和支撑板拼装后的示意图；
图 3是本发明采用同样模具同时加工散热板和支撑板的示意图；
图 4是本发明散热板和支撑板采用铆接工艺制程固定的示意图；
图 5是本发明散热板和支撑板采用无铆釘的铆接方式固定示意图； 图 6是本发明散热板和支撑板采用铆釘铆接方式固定示意图；
图 7是本发明散热板和支撑板采用强力胶黏结方式固定示意图；
图 8是本发明散热板和支撑板采用螺杆连接方式固定示意图；
图 9是本发明散热板和支撑板采用咬缝连接方式固定示意图；
其中： 1、 散热板； 2、 支撑板； 3、 铆釘； 4、 强力胶； 5、 螺杆。
【具体实施方式】
下面结合附图和较佳的实施例对本发明作进一步说明。
如图 1~9所示， 一种液晶显示装置， 包括背光模组， 所述背光模组底部设 有背板， 用于支撑内部器件以及密封模组， 提供必要的防护。 所述背光模组的 背板包括散热板 1、 与散热板 1连接的支撑板 2; 所述散热板 1的热传导性能大 于所述支撑板 2的热传导性能。 散热板 1可以采用铝等散热性能好的金属； 而 支撑板 2可以选用价格比较便宜的钢板等金属材料， 也可以采用塑胶等具有一 定强度的低成本材料。
所述散热板 1设置在背光模组 LED灯源固定装置所在区域。 LED为背光模 组的主要发热器件，一般 LED都固定在铝挤等 LED灯源固定装置上， 以铝挤为 例， 可以将铝挤安装到背板的散热板 1 上， 这样通过热传导可以快速将热量从 铝挤传递到散热板 1上， 通过散热板 1发散到外部空气中。
进一步的， 所述散热板 1和所述支撑板 2形状和面积保持一致， 这样可以 在生产的时候将所述散热板 1和所述支撑板 2放在同一个套模具中同时沖压成 型， 减少了加工步骤， 提高生产效率， 降低生产成本； 另外还减少了模具的使 用， 节省模具费用。 所述散热板 1和支撑板 2之间可以通过铆接（如图 5、 图 6所示 )、 强力胶 4黏结 （如图 7中所示；)、 螺杆 5 (如图 8中所示）连接、 咬缝连接（如图 9中 所示）等方式进行固定； 所述铆接可以包括无铆釘 3的铆接（如图 5中所示） 和铆釘 3铆接（如图 6中所示）。下面以咬缝方式进一步阐释本发明的固定方式： 如图 9所示， 所述散热板 1和所述支撑板 2通过咬缝方式固定， 所述散热 板 1和所述支撑板 2在连接处折边， 形成卡槽和卡板， 所述散热板 1的卡板嵌 入所述支撑板 2的卡槽， 同时， 所述支撑板 2的卡板也嵌入所述散热板 1的卡 槽， 形成所述的咬缝连接。 该实施方式中无需采用额外的固定材料， 减少组装 步骤， 提高组装效率。
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、 一种背光模组的背板， 包括： 散热板、 与散热板连接的支撑板； 所 述散热板的热传导性能大于所述支撑板的热传导性能。
2、 如权利要求 1所述的一种背光模组的背板， 其特征在于， 所述散热 板和所述支撑板都采用金属材质。
3、 如权利要求 2所述的一种背光模组的背板， 其特征在于， 所述散热 板和所述支撑板形状和面积保持一致。
4、 如权利要求 1所述的一种背光模组的背板， 其特征在于， 所述散热 板和所述支撑板通过铆接或螺杆连接的方式固定。
5、 如权利要求 1所述的一种背光模组的背板， 其特征在于， 所述散热 板和所述支撑板通过强力胶粘贴的方式固定。
6、 如权利要求 1所述的一种背光模组的背板， 其特征在于， 所述散热 板和所述支撑板通过咬缝方式固定， 所述散热板和所述支撑板在连接处折 边， 形成卡槽和卡板， 所述散热板的卡板嵌入所述支撑板的卡槽， 同时， 所述支撑板的卡板也嵌入所述散热板的卡槽， 形成所述的咬缝连接。
7、 如权利要求 1所述的一种背光模组的背板， 其特征在于， 所述散热 板设置在背光模组 LED灯源固定装置所在区域。
8、 如权利要求 2所述的一种背光模组的背板， 其特征在于， 所述背光 模组 LED灯源固定装置为铝挤； 所述散热板与所述铝挤相接触。
9、 一种背光模组， 包括如权利要求 1所述的背光模组的背板， 所述背 光模组的背板包括： 散热板、 与散热板连接的支撑板； 所述散热板的热传 导性能大于所述支撑板的热传导性能。
10、 如权利要求 9所述的一种背光模组， 其特征在于， 所述散热板和 所述支撑板都采用金属材质。
11、 如权利要求 10所述的一种背光模组， 其特征在于， 所述散热板和 所述支撑板形状和面积保持一致。
12、 如权利要求 9所述的一种背光模组， 其特征在于， 所述散热板和 所述支撑板通过铆接或螺杆连接的方式固定。
13、 如权利要求 9所述的一种背光模组， 其特征在于， 所述散热板和 所述支撑板通过强力胶粘贴的方式固定。
14、 如权利要求 9所述的一种背光模组， 其特征在于， 所述散热板和 所述支撑板通过咬缝方式固定， 所述散热板和所述支撑板在连接处折边， 形成卡槽和卡板， 所述散热板的卡板嵌入所述支撑板的卡槽， 同时， 所述 支撑板的卡板也嵌入所述散热板的卡槽， 形成所述的咬缝连接。
15、 如权利要求 9所述的一种背光模组， 其特征在于， 所述散热板设 置在背光模组 LED灯源固定装置所在区域。
16、 如权利要求 10所述的一种背光模组， 其特征在于， 所述背光模组 LED灯源固定装置为铝挤； 所述散热板与所述铝挤相接触。
17、 一种液晶显示装置， 包括如权利要求 9所述的背光模组， 所述背 光模组包括背板， 所述背板包括： 散热板、 与散热板连接的支撑板； 所述 散热板的热传导性能大于所述支撑板的热传导性能。
18、 如权利要求 17所述的一种液晶显示装置， 其特征在于， 所述散热 板和所述支撑板都采用金属材质。
19、 如权利要求 18所述的一种液晶显示装置， 其特征在于， 所述散热 板和所述支撑板形状和面积保持一致。
20、 如权利要求 17所述的一种液晶显示装置， 其特征在于， 所述散热 板和所述支撑板通过铆接或螺杆连接的方式固定。
21、 如权利要求 17所述的一种液晶显示装置， 其特征在于， 所述散热 板和所述支撑板通过强力胶粘贴的方式固定。
22、 如权利要求 17所述的一种液晶显示装置， 其特征在于， 所述散热 板和所述支撑板通过咬缝方式固定， 所述散热板和所述支撑板在连接处折 边， 形成卡槽和卡板， 所述散热板的卡板嵌入所述支撑板的卡槽， 同时， 所述支撑板的卡板也嵌入所述散热板的卡槽， 形成所述的咬缝连接。
23、 如权利要求 17所述的一种液晶显示装置， 其特征在于， 所述散热 板设置在背光模组 LED灯源固定装置所在区域。
24、 如权利要求 18所述的一种液晶显示装置， 其特征在于， 所述背光 模组 LED灯源固定装置为铝挤； 所述散热板与所述铝挤相接触。
PCT/CN2011/083872 2011-10-12 2011-12-13 一种背光模组的背板、背光模组及液晶显示装置 WO2013053178A1 (zh)

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