WO2016110019A1 - 一种液晶显示装置及其背光模组 - Google Patents

一种液晶显示装置及其背光模组 Download PDF

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Publication number
WO2016110019A1
WO2016110019A1 PCT/CN2015/076751 CN2015076751W WO2016110019A1 WO 2016110019 A1 WO2016110019 A1 WO 2016110019A1 CN 2015076751 W CN2015076751 W CN 2015076751W WO 2016110019 A1 WO2016110019 A1 WO 2016110019A1
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WO
WIPO (PCT)
Prior art keywords
light
plate
backlight module
partition plate
bottom plate
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PCT/CN2015/076751
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English (en)
French (fr)
Inventor
马永达
谷敬霞
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/892,652 priority Critical patent/US9778508B2/en
Publication of WO2016110019A1 publication Critical patent/WO2016110019A1/zh

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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
    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/133604—Direct backlight with lamps
    • 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

  • the present application relates to the field of display technologies, and in particular, to a liquid crystal display device and a backlight module thereof.
  • a backlight module of a liquid crystal display device with high brightness display adopts a direct type backlight module.
  • the heat dissipation of the light bar is mostly made by contacting the metal light bar substrate with the metal back plate, so that heat exchange between the metal back plate and the metal light bar substrate is performed through the metal back plate.
  • the heat on the metal strip substrate is carried away, and then the metal back sheet dissipates heat to the external environment of the back panel to dissipate heat from the light source assembly.
  • the quality of the metal backsheet not only increases the manufacturing cost of the product, but also is not conducive to the turnover and transportation of the product.
  • the present application provides a liquid crystal display device and a backlight module thereof.
  • the back plate of the backlight module is an injection molded back plate, and the backlight module has a lighter quality, which reduces the manufacturing cost of the backlight module and facilitates product turnover. With transportation.
  • a backlight module includes a back plate, a partition plate, and a light source assembly; wherein:
  • the backboard has a bottom plate and a plurality of side plates to form a receiving groove, and the back plate is an injection molded back plate;
  • the partition plate is installed in the accommodating groove, and a heat dissipation chamber is formed between the partition plate and the bottom plate.
  • the back plate is provided with an external environment and the a convection hole of the heat dissipation chamber to form a gas convection passage having a chimney effect in the heat dissipation chamber;
  • the light source assembly includes a light bar substrate and a plurality of LED lights mounted on the light bar substrate, wherein the light bar substrate is located in the heat dissipation cavity, and each LED light is located on the light bar substrate facing away from the bottom plate And a light-transmitting hole through which the light emitted by each of the LED lamps penetrates the partition plate in a thickness direction of the partition plate.
  • the back plate is an injection molded back plate, and the weight thereof is light.
  • the light emitted by the LED lamp in the light source assembly is incident on the side of the partition plate facing away from the bottom plate through the light transmission hole provided on the partition plate to provide a light source for the liquid crystal display device.
  • the heat generated by the LED lamp is distributed through the light bar substrate to the heat dissipation chamber formed between the bottom plate and the partition plate in the back plate.
  • the convection hole provided on the bottom plate of the back plate communicates with the heat dissipation chamber and forms a gas convection passage having a chimney effect, cold air can enter the heat dissipation chamber from one end of the gas convection passage, and at the same time, the hot air can The heat dissipation chamber is dissipated from the other end of the gas convection passage, thereby taking away heat in the heat dissipation chamber to achieve heat dissipation to the light source assembly.
  • the heat dissipation of the light source assembly in the backlight module is achieved by the heat dissipation chamber between the back plate and the partition plate and the formed gas convection passage.
  • the back plate in the backlight module is an injection molded back plate, which is light in weight, reduces the manufacturing cost of the backlight module, and facilitates product turnover and transportation.
  • a surface of the bottom plate facing one side of the partition plate is provided with a plurality of light bar positioning bases, and the light bar substrate is fixed on the light bar positioning base, so that the light bar substrate and the light bar substrate A through-air gap is formed between the bottom plates, and the air-permeable gap cooperates with a convection hole provided in the back plate to form the gas convection passage.
  • a surface of the light strip substrate facing away from the bottom plate is in sealing engagement with a surface of the partition plate facing the side of the bottom plate.
  • the surface of the light strip substrate facing away from the bottom plate and the surface of the side of the partition plate facing the bottom plate are adhesively sealed.
  • each of the LED lamps penetrates the partition plate through the light-transmitting hole in a thickness direction of the partition plate to protrude into a space of a side of the partition plate facing away from the bottom plate.
  • one side of the partition plate facing away from the bottom plate is a reflecting surface.
  • the partition plate comprises a partition plate body and a reflective layer
  • the reflective layer is located on a side of the partition plate body facing away from the bottom plate, and the reflective layer is formed away from a side of the partition plate body.
  • the reflecting surface is located on a partition plate body and a reflective layer
  • the partition plate is a partition plate made of a metal aluminum material.
  • the present application also provides a liquid crystal display device, including any of the backlight modules provided in the above technical solutions.
  • FIG. 1 is a schematic structural diagram of a liquid crystal display device provided in an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a backplane in a backlight module according to an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present application.
  • the backlight module provided by the embodiment of the present application includes a back plate 1 , a partition plate 2 , and a light source assembly.
  • the back sheet 1 has a bottom plate 11 and a plurality of side plates 12 to form a receiving groove, and the back plate 1 is an injection molded back plate.
  • the partition plate 2 is installed in the accommodating groove, and the heat dissipation chamber A is formed between the partition plate 2 and the bottom plate 11.
  • the back plate 1 is provided with a convection hole communicating with the external environment and the heat dissipation chamber A to form a gas convection channel having a chimney effect in the heat dissipation chamber A, as shown in FIG. 1 and FIG.
  • the convection hole a and the convection hole b are shown.
  • the convection holes are provided on the bottom plate 11 of the backing plate 1, as can be seen from Fig. 2, the convection holes a and b may each have one or more.
  • the light source assembly includes a light bar substrate 32 and a plurality of LED lamps 31 mounted on the light bar substrate 32.
  • the light bar substrate 32 is located in the heat dissipation chamber A, and each of the LED lamps 31 is located on a side of the light bar substrate 32 facing away from the bottom plate 11, and the partition plate 2 is provided with light for emitting each of the LED lamps 31 on the partition plate 2
  • the thickness direction penetrates the light transmission hole of the partition plate 2.
  • the partition plate 2 formed in the receiving groove formed by the back plate 1 of the backlight module divides the space between the bottom plate 11 of the back plate 1 and the optical film 4 in the backlight module into two parts.
  • One part is the heat dissipation chamber A between the partition plate 2 and the bottom plate 11, and the other part is the optical chamber between the partition plate 2 and the optical film 4.
  • the back plate 1 is an injection molded back plate, and the weight thereof is light.
  • the light emitted from the LED lamp 31 in the light source unit is incident on the side of the partitioning plate 2 facing away from the bottom plate 11 through the light-transmitting hole provided in the partitioning plate 2, and supplies a light source to the display panel 5 in the liquid crystal display device.
  • the heat generated by the LED lamp 31 is radiated through the light bar substrate 32 into the heat dissipation chamber A formed between the bottom plate 11 in the back plate 1 and the partition plate 2.
  • a convection hole provided in the back plate 1 communicates with the heat dissipation chamber A, and forms a gas convection passage having a chimney effect.
  • the hot air can dissipate the heat dissipation chamber A from the other end of the gas convection passage, that is, the convection hole b, thereby taking away the heat in the heat dissipation chamber A, thereby achieving heat dissipation to the light source assembly.
  • the arrows in Fig. 1 exemplarily show the direction of air flow.
  • the heat dissipation of the light source assembly in the backlight module is achieved by the heat dissipation chamber A between the back plate 1 and the partition plate 2 and the formed gas convection passage.
  • the back plate 1 in the backlight module is an injection molded back plate, which is light in weight, reduces the manufacturing cost of the backlight module, and facilitates product turnover and transportation.
  • the surface of the bottom plate 11 facing the side of the partition plate 2 is provided.
  • the light bar substrate 32 is fixed on the light bar positioning base 111 such that a wind permeable gap is formed between the light bar substrate 32 and the bottom plate 11, and the air permeable gap cooperates with the convection hole provided on the back plate 1 to form a gas convection passage.
  • the arrangement of the light bar positioning base 111 can ensure the spacing between the light bar substrate 32 and the bottom plate 11 in the back plate 1, thereby ensuring that the gas convection passage between the bottom plate 11 and the partition plate 2 in the back plate 1 is sufficiently clear.
  • the surface of the light bar substrate 32 facing away from the bottom plate 11 may face the partition plate 2 toward the bottom plate.
  • the surface of one side of the 11 is hermetically sealed.
  • the surface of the side of the light bar substrate 32 facing away from the bottom plate 11 and the surface of the side of the partition plate 2 facing the bottom plate 11 are bonded and sealed by adhesion.
  • the bonding between the light bar substrate 32 and the partitioning plate 2 can be achieved by a double-sided tape or an adhesive.
  • each of the LED lamps 31 penetrates the partition plate 2 in the thickness direction of the partition plate 2 through the light-transmitting holes to extend into the space of the side of the partition plate 2 facing away from the bottom plate 11 . That is, it extends into the optical chamber. This can increase the angle at which the light emitted from the LED lamp 31 enters the optical chamber, and improve the utilization of the light emitted from the LED lamp 31.
  • one side of the partitioning plate 2 facing away from the bottom plate 11 is a reflecting surface.
  • the partitioning plate 2 can function as a reflective sheet, and it is no longer necessary to provide a separate reflecting structure for the backlight module.
  • the partition plate 2 includes a partition plate body and a reflective layer, the reflective layer is located on a side of the partition plate body facing away from the bottom plate 11, and a side of the reflective layer facing away from the partition plate body forms a reflecting surface.
  • the side of the partition plate 2 facing away from the bottom plate is a reflecting surface, and can also be specifically realized as: the dividing plate 2 It is a partition plate made of a metal aluminum material.
  • an embodiment of the present application further provides a liquid crystal display device, including any of the backlight modules provided in the above embodiments. Since the backlight module is light in weight, the quality of the liquid crystal display device using the backlight module described above is also light.

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

Abstract

一种液晶显示装置及其背光模组，背光模组包括背板(1)、分隔板(2)、光源组件；背板(1)具有底板(11)和多个侧板，且背板(1)为注塑背板；分隔板(2)安装于容纳槽内，分隔板(2)与底板(11)之间形成散热腔室，在散热腔室中，背板(1)上设有对流孔以在散热腔室内形成具有烟囱效应的气体对流通道；光源组件包括灯条基板(32)和安装于灯条基板(32)上的多个LED灯(31)，灯条基板(32)位于散热腔室内，每一个LED灯(31)位于灯条基板(32)背离底板(11)的一侧，且分隔板(2)上设有使每一个LED灯(31)发射的光线在分隔板(2)的厚度方向贯穿分隔板(2)的透光孔。背光模组中光源组件的散热通过散热腔室以及气体对流通道实现，背板(1)为注塑背板，重量较轻，降低了背光模组的制造成本，且便于产品的周转与运输。

Description

一种液晶显示装置及其背光模组 技术领域
本申请涉及显示技术领域，尤其涉及一种液晶显示装置及其背光模组。
背景技术
在显示技术领域，高亮度显示的液晶显示装置的背光模组多采用直下式背光模组。
在现有技术中的直下式背光模组中，灯条的散热多采用金属灯条基板与金属背板接触，从而使金属背板与金属灯条基板之间进行热交换，通过金属背板将金属灯条基板上的热量带走，然后，金属背板将热量散发至背板的外部环境中，实现对光源组件的散热。
但是，金属背板的质量较大，不仅增加了产品的制造成本，同时不利于产品生产时的周转与运输。
发明内容
本申请提供了一种液晶显示装置及其背光模组，该背光模组中的背板为注塑背板，背光模组的质量较轻，降低了背光模组的制造成本，且便于产品的周转与运输。
为达到上述目的，本申请提供以下技术方案：
一种背光模组，包括背板、分隔板、光源组件；其中：
所述背板具有底板和多个侧板以形成容纳槽，且所述背板为注塑背板；
所述分隔板安装于所述容纳槽内，所述分隔板与所述底板之间形成散热腔室，在所述散热腔室中，所述背板上设有连通外部环境与所述散热腔室的对流孔，以在所述散热腔室内形成具有烟囱效应的气体对流通道；
所述光源组件包括灯条基板和安装于所述灯条基板上的多个LED灯，所述灯条基板位于所述散热腔室内，每一个LED灯位于所述灯条基板背离所述底板的一侧，且所述分隔板上设有使每一个所述LED灯发射的光线在所述分隔板的厚度方向贯穿所述分隔板的透光孔。
上述背光模组中，背板为注塑背板，其重量较轻。光源组件中LED灯发出的光线通过分隔板上设置的透光孔射入分隔板背离底板的一侧，为液晶显示装置提供光源。LED灯产生的热量通过灯条基板散放到背板中的底板与分隔板之间形成的散热腔室内。由于背板的底板上设有的对流孔与散热腔室连通，并且形成具有烟囱效应的气体对流通道，因此，冷空气可以从气体对流通道的一端进入散热腔室，同时，热空气可以从气体对流通道的另一端散出散热腔室，从而将散热腔室内的热量带走，实现对光源组件的散热。
因此，背光模组中光源组件的散热通过背板与分隔板之间的散热腔室以及形成的气体对流通道实现。上述背光模组中的背板为注塑背板，重量较轻，降低了背光模组的制造成本，且便于产品的周转与运输。
优选地，所述底板朝向所述分隔板的一侧的表面设有多个灯条定位基台，所述灯条基板固定于所述灯条定位基台上，使得所述灯条基板与所述底板之间形成透风间隙，所述透风间隙与所述背板设置的对流孔配合以形成所述气体对流通道。
优选地，所述灯条基板背离所述底板的一侧的表面与所述分隔板朝向所述底板的一侧的表面密封配合。
优选地，所述灯条基板背离所述底板的一侧的表面与所述分隔板朝向所述底板的一侧的表面之间通过粘结密封配合。
优选地，每一个所述LED灯通过所述透光孔在所述分隔板的厚度方向贯穿所述分隔板、以伸入至所述分隔板背离所述底板的一侧的空间。
优选地，所述分隔板背离所述底板的一面为反射面。
优选地，所述分隔板包括分隔板本体和反射层，所述反射层位于所述分隔板本体背离所述底板的一侧，所述反射层背离所述分隔板本体的一面形成所述反射面。
优选地，所述分隔板为由金属铝材料制备的分隔板。
本申请还提供了一种液晶显示装置，包括上述技术方案中提供的任意一种背光模组。
附图说明
图1为本申请一种实施例中提供的液晶显示装置的结构示意图；
图2为本申请一种实施例中提供的背光模组中背板的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参考图1，图1示出本申请实施例提供的液晶显示装置的结构示意图。如图1所示，本申请实施例提供的背光模组包括背板1、分隔板2、光源组件。
背板1具有底板11和多个侧板12以形成容纳槽，且背板1为注塑背板。
分隔板2安装于容纳槽内，分隔板2与底板11之间形成散热腔室A。在散热腔室A中，背板1上设有连通外部环境与散热腔室A的对流孔，以在散热腔室A内形成具有烟囱效应的气体对流通道，如图1和图2中所示的对流孔a和对流孔b。优选地，对流孔设置在背板1的底板11上，从图2中可以看出，对流孔a和b可以各具有一个或多个。
光源组件包括灯条基板32和安装于灯条基板32上的多个LED灯31。灯条基板32位于散热腔室A内，每一个LED灯31位于灯条基板32背离底板11的一侧，且分隔板2上设有使每一个LED灯31发射的光线在分隔板2的厚度方向贯穿分隔板2的透光孔。
如图1中所示，背光模组的背板1形成的容纳槽内设有的分隔板2将背光模组中背板1的底板11与光学膜材4之间的空间分隔为两部分，一部分为分隔板2与底板11之间的散热腔室A，另一部分为分隔板2与光学膜材4之间的光学腔室。上述背光模组中，背板1为注塑背板，其重量较轻。光源组件中LED灯31发出的光线通过分隔板2上设置的透光孔射入分隔板2背离底板11的一侧，为液晶显示装置中的显示面板5提供光源。LED灯31产生的热量通过灯条基板32散放到背板1中的底板11与分隔板2之间形成的散热腔室A内。背板1上设有的对流孔与散热腔室A连通，并且形成具有烟囱效应的气体对流通道。 当显示装置如图1所示的方位放置时，冷空气可以从气体对流通道的一端、即对流孔a进入散热腔室A。冷空气进入到散热腔室A后与灯条基板32进行热交换形成热空气。热空气可以从气体对流通道的另一端、即对流孔b散出散热腔室A，从而将散热腔室A内的热量带走，实现对光源组件的散热。图1中的箭头示例性示出了空气流通方向。
因此，上述背光模组中光源组件的散热通过背板1与分隔板2之间的散热腔室A以及形成的气体对流通道实现。上述背光模组中的背板1为注塑背板，重量较轻，降低了背光模组的制造成本，且便于产品的周转与运输。
请继续参考图1，为了保证背板1中底板11与分隔板2之间的气体对流通道足够畅通，在一种优选实施方式中，底板11朝向分隔板2的一侧的表面设有多个灯条定位基台111。灯条基板32固定于灯条定位基台111上，使得灯条基板32与底板11之间形成透风间隙，透风间隙与背板1上设置的对流孔配合以形成气体对流通道。灯条定位基台111的设置能够保证灯条基板32与背板1中的底板11之间的间距，从而保证背板1中底板11与分隔板2之间的气体对流通道足够畅通。
请继续参考图1，为了防止外界的灰尘等杂质进入到分隔板2背离底板11的一侧的光学腔室内，灯条基板32背离底板11的一侧的表面可以与分隔板2朝向底板11的一侧的表面密封配合。
具体地，灯条基板32背离底板11的一侧的表面与分隔板2朝向底板11的一侧的表面之间通过粘结密封配合。灯条基板32与分隔板2之间的粘结可以通过双面胶或粘结剂实现。
更具体地，请继续参考图1，每一个LED灯31通过透光孔在分隔板2的厚度方向贯穿分隔板2，以伸入至分隔板2背离底板11的一侧的空间，即伸入光学腔室内。这样能够增大LED灯31发射的光线射入光学腔室时的角度，且提高对LED灯31发射的光线的利用率。
一种优选实施方式中，上述分隔板2背离底板11的一面为反射面。进而分隔板2可以起到反射片的作用，无需再为背光模组设置单独的反射结构。
具体地，分隔板2包括分隔板本体和反射层，反射层位于分隔板本体背离底板11的一侧，反射层背离分隔板本体的一面形成反射面。
分隔板2背离底板的一面为反射面还可以具体实现为：分隔板2 为由金属铝材料制备的分隔板。
另外，本申请的实施例还提供了一种液晶显示装置，包括上述实施方式中提供的任意一种背光模组。由于上述背光模组的质量较轻，因此使用了上述背光模组的液晶显示装置的质量也较轻。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (9)

  1. 一种背光模组，其特征在于，包括背板、分隔板、光源组件；其中：
    所述背板具有底板和多个侧板以形成容纳槽，且所述背板为注塑背板；
    所述分隔板安装于所述容纳槽内，所述分隔板与所述底板之间形成散热腔室，在所述散热腔室中，所述背板上设有连通外部环境与所述散热腔室的对流孔，以在所述散热腔室内形成具有烟囱效应的气体对流通道；
    所述光源组件包括灯条基板和安装于所述灯条基板上的多个LED灯，所述灯条基板位于所述散热腔室内，每一个LED灯位于所述灯条基板背离所述底板的一侧，且所述分隔板上设有使每一个所述LED灯发射的光线在所述分隔板的厚度方向贯穿所述分隔板的透光孔。
  2. 根据权利要求1所述的背光模组，其特征在于，所述底板朝向所述分隔板的一侧的表面设有多个灯条定位基台，所述灯条基板固定于所述灯条定位基台上，使得所述灯条基板与所述底板之间形成透风间隙，所述透风间隙与所述背板上设置的对流孔配合以形成所述气体对流通道。
  3. 根据权利要求2所述的背光模组，其特征在于，所述灯条基板背离所述底板的一侧的表面与所述分隔板朝向所述底板的一侧的表面密封配合。
  4. 根据权利要求3所述的背光模组，其特征在于，所述灯条基板背离所述底板的一侧的表面与所述分隔板朝向所述底板的一侧的表面之间通过粘结密封配合。
  5. 根据权利要求3所述的背光模组，其特征在于，每一个所述LED灯通过所述透光孔在所述分隔板的厚度方向贯穿所述分隔板，以伸入至所述分隔板背离所述底板的一侧的空间。
  6. 根据权利要求1～5中任一项所述的背光模组，其特征在于，所述分隔板背离所述底板的一面为反射面。
  7. 根据权利要求6所述的背光模组，其特征在于，所述分隔板包括分隔板本体和反射层，所述反射层位于所述分隔板本体背离所述底 板的一侧，所述反射层背离所述分隔板本体的一面形成所述反射面。
  8. 根据权利要求6所述的背光模组，其特征在于，所述分隔板为由金属铝材料制备的分隔板。
  9. 一种液晶显示装置，其特征在于，包括如权利要求1～8中任一项所述的背光模组。
PCT/CN2015/076751 2015-01-08 2015-04-16 一种液晶显示装置及其背光模组 WO2016110019A1 (zh)

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