WO2013086712A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2013086712A1
WO2013086712A1 PCT/CN2011/084014 CN2011084014W WO2013086712A1 WO 2013086712 A1 WO2013086712 A1 WO 2013086712A1 CN 2011084014 W CN2011084014 W CN 2011084014W WO 2013086712 A1 WO2013086712 A1 WO 2013086712A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
backlight module
units
light source
source device
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PCT/CN2011/084014
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English (en)
French (fr)
Inventor
黄冲
陈仕祥
Original Assignee
深圳市华星光电技术有限公司
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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 US13/381,077 priority Critical patent/US20130148052A1/en
Publication of WO2013086712A1 publication Critical patent/WO2013086712A1/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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • 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 embodiment of the invention relates to the field of flat display, in particular to a backlight module (BLM) with high heat dissipation efficiency and a liquid crystal display device (LCD) using the same.
  • BLM backlight module
  • LCD liquid crystal display device
  • Liquid crystal display devices have been widely used in mobile phones, personal digital assistants (PDAs), notebook computers, notebook computers, personal computers (PCs), and televisions (TVs) due to their low radiation, small size, and low power consumption. . Since the liquid crystal material in the liquid crystal display panel itself does not have the light emitting property, in order to achieve the display effect, the liquid crystal display panel needs to provide a light source device to realize a display function, such as a backlight module, and the function thereof is to provide sufficient brightness for the liquid crystal display panel. A uniform surface light source.
  • High-performance light-emitting diodes due to energy consumption, durability and environmental protection requirements Diode, LED
  • CCFL cold cathode fluorescent lamp
  • a backlight module a plurality of light emitting diodes, a printed circuit board (PCB), an aluminum extrusion, and a backing plate are usually included.
  • the light emitting diode is soldered on the printed circuit board, the printed circuit board is in contact with the aluminum, and the aluminum extrusion is further in contact with the backing plate.
  • the heat generated when the LED is illuminated is transmitted to the aluminum extrusion through the printed circuit board, and then transferred to the back sheet through the aluminum extrusion to continue to be emitted outward.
  • the backplane module of this structure mainly has the following problems in terms of heat dissipation:
  • the size of the aluminum extrusion affects the heat dissipation efficiency, but is limited by the internal space of the backlight module, and the size of the aluminum extrusion is limited by space;
  • the backlight module usually includes a light guide plate (LGP) and an optical film (Optical) Films), after the backlight module is assembled, a closed space is usually formed, which makes it difficult for the aluminum extrusion to directly convect heat with the outside of the backlight module, thereby reducing the heat dissipation efficiency of the backlight module.
  • LGP light guide plate
  • Optical optical film
  • the technical problem mainly solved by the present invention is to improve the heat dissipation efficiency of the backlight module.
  • the technical solution adopted by the present invention is to provide a backlight module including a light source device, a heat dissipation device and a back plate.
  • the heat dissipation device is disposed between the light source device and the back plate, and is respectively separated from the light source device and the back plate.
  • the contact device is characterized in that: the light source device comprises a plurality of point light sources and a printed circuit board, the plurality of point light sources are respectively disposed on the printed circuit board; the heat dissipation device comprises a heat dissipation body and a plurality of heat dissipation units, and the plurality of heat dissipation units are respectively disposed on the The heat dissipation body has a plurality of openings and a plurality of hollow patterns, and the plurality of hollow patterns are respectively adjacent to the plurality of openings, and respectively correspond to the plurality of heat dissipation units, and the plurality of heat dissipation units respectively pass through the plurality of openings.
  • the heat dissipating body is a rectangular flat plate structure.
  • the heat dissipation body is located between the light source device and the plurality of openings.
  • the plurality of heat dissipating units and the heat dissipating body are integrally formed.
  • a plurality of heat dissipating units are formed on the heat dissipating body by stamping or chemical etching.
  • the plurality of heat dissipating units are heat dissipating fins.
  • the plurality of heat dissipating units respectively pass through the plurality of openings and are exposed outside the backing plate.
  • a backlight module which includes a light source device, a heat sink, and a back plate.
  • the heat dissipating device is disposed between the light source device and the back plate, and is in contact with the light source device and the back plate respectively.
  • the heat dissipation device includes a heat dissipation body and a plurality of heat dissipation units, and the plurality of heat dissipation units are respectively disposed on the heat dissipation body.
  • the backboard includes a plurality of openings, and the plurality of heat dissipation units respectively pass through the plurality of openings.
  • the heat dissipation body is a rectangular flat plate structure.
  • the heat dissipation body is located between the light source device and the plurality of openings.
  • the light source device includes a plurality of point light sources and a printed circuit board, and the plurality of point light sources are respectively disposed on the printed circuit board.
  • the plurality of heat dissipating units and the heat dissipating body are integrally formed.
  • the plurality of heat dissipating units are formed on the heat dissipating body by stamping or chemical etching.
  • the plurality of heat dissipation units are heat dissipation fins.
  • the plurality of heat dissipation units respectively pass through the plurality of openings and are exposed outside the backboard.
  • the backboard includes a plurality of hollow patterns, respectively, adjacent to the plurality of openings, and respectively corresponding to the plurality of heat dissipation units.
  • the present invention is to provide a liquid crystal display device including a backlight module.
  • the backlight module includes a light source device, a heat sink, and a back plate.
  • the heat dissipating device is disposed between the light source device and the back plate, and is in contact with the light source device and the back plate respectively.
  • the heat dissipation device includes a heat dissipation body and a plurality of heat dissipation units, and the plurality of heat dissipation units are respectively disposed on the heat dissipation body.
  • the backboard includes a plurality of openings, and the plurality of heat dissipation units respectively pass through the plurality of openings.
  • the utility model has the beneficial effects that the backlight module and the liquid crystal display device of the embodiment of the invention increase the heat dissipation area of the heat dissipation device and improve the backlight module by forming a plurality of heat dissipation units on the heat dissipation body.
  • the heat dissipation efficiency, and the heat dissipation unit is exposed through the opening of the back plate, can directly dissipate heat outward, further improving the heat dissipation efficiency of the backlight module, and further eliminating the need to additionally provide other heat dissipation components outside the backlight module.
  • FIG. 1 is a side view showing a schematic configuration of a backlight module according to a preferred embodiment of the present invention
  • FIG. 2 is a schematic plan view of the backlight module of FIG. 1 along the AB direction;
  • FIG 3 is a side elevational view showing the liquid crystal display device of a preferred embodiment of the present invention.
  • the embodiment of the invention discloses a backlight module. Please refer to FIG. 1 and FIG. 2 together.
  • 1 is a schematic side view of a backlight module according to a preferred embodiment of the present invention
  • FIG. 2 is a schematic plan view of the backlight module of FIG. 1 along the AB direction.
  • the backlight module 1 includes a light source device 12, a heat sink 14 and a backing plate 16.
  • the heat sink 14 is disposed between the light source device 12 and the back plate 16 and is in contact with the light source device 12 and the back plate 16, respectively.
  • the heat dissipation device 14 includes a heat dissipation body 142 and a plurality of heat dissipation units 144 , and the plurality of heat dissipation units 144 are respectively disposed on the heat dissipation body 142 .
  • the back plate 16 includes a plurality of openings 162 through which the plurality of heat dissipation units 144 respectively pass.
  • the main function of the light source device 12 is to provide sufficient brightness of light, which includes a plurality of point light sources 122 and a circuit board 124, and the plurality of point light sources 122 are respectively disposed on the circuit board 124.
  • the plurality of point light sources 122 may be arranged on the circuit board 124 in a straight line, or may be arranged on the circuit board 124 in an array, or may be arranged in other suitable manners according to actual needs.
  • the circuit board 124 can be a printed circuit board
  • the point light source 122 can be a light emitting diode and soldered to the circuit board 124.
  • the main function of the backplane 16 is to maintain the physical strength of the backlight module 1 , support a plurality of components in the backlight module 1 , and dissipate heat generated inside the backlight module 1 to the outside.
  • the material of the back plate 16 is metal or alloy.
  • the back plate 16 may be aluminum, iron, magnesium or an alloy material thereof, and is formed by extrusion molding or the like.
  • the backboard 16 may further be provided with a plurality of hollow patterns (not shown) adjacent to the plurality of openings 162, respectively. And corresponding to the plurality of heat dissipation units 144, respectively.
  • the plurality of hollow patterns can promote air circulation on both sides of the back plate 16, and the heat dissipation efficiency of the backlight module 1 is more effectively improved.
  • the heat sink 14 is made of a material having good thermal conductivity.
  • the heat sink 14 can be formed by extrusion molding of aluminum or aluminum alloy.
  • the heat dissipation body 142 is a rectangular flat plate structure located between the light source device 12 and the plurality of openings 162.
  • the heat dissipation unit 144 and the heat dissipation body 142 are integrally formed.
  • the plurality of heat dissipation units 144 may be formed on the heat dissipation body 142 by stamping or chemical etching.
  • the plurality of heat dissipation units 144 disposed on the heat dissipation body 142 can increase the effective heat dissipation area of the heat dissipation device 14 , thereby improving the heat dissipation capability of the heat dissipation device 14 .
  • the heat dissipation unit 144 extends outward from the heat dissipation body 142 and passes through the plurality of openings 162 and is exposed outside the back plate 16 .
  • the plurality of heat dissipating units 144 may be heat dissipating fins, and the shape thereof is not specifically limited, and may be, for example, a fish scale, a rectangle, an ellipse, a triangle, a circle, or other suitable polygon.
  • the heat dissipation mode of the backlight module 1 is: the heat generated by the point light source 122 is transmitted to the heat dissipation body 142 of the heat dissipation device 14 through the circuit board 124, and the heat dissipation body 142 of the heat dissipation device 14 transfers heat to the heat dissipation body 142.
  • the backing plate 16 further radiates heat to the outside, and further, the heat dissipating unit 144 of the heat dissipating device 14 directly dissipates heat transferred to the heat dissipating device 14 to the outside of the backboard 16 . In turn, the heat dissipation capability is improved.
  • the present invention also provides a liquid crystal display device.
  • the liquid crystal display device 3 includes the backlight module 1 and the liquid crystal display panel 2 , and the liquid crystal display panel 2 is disposed on the backlight module 1 .
  • the light emitted by the backlight module 1 illuminates the liquid crystal display panel 2 for display.
  • the liquid crystal display device 3 may be a liquid crystal display or a liquid crystal television (LCD-TV).
  • the effect of the present invention is that, in the case of the backlight module 1 and the liquid crystal display device 3 using the backlight module 1 of the embodiment of the present invention, the heat dissipation body 142 is disposed on the heat dissipation body 142. Forming a plurality of the heat dissipation units 144 increases the heat dissipation area of the heat dissipation device 14 and improves the heat dissipation efficiency of the backlight module 1 . Moreover, the heat dissipation unit 144 is exposed to the outside of the back plate 16 through the opening 162 of the back plate 16, thereby further improving the heat dissipation efficiency of the backlight module 1.
  • the hollow pattern on the back plate 16 corresponds to the plurality of heat dissipation units 144, which can promote air circulation inside and outside the back plate 16, and further improve the heat dissipation efficiency of the backlight module 1.
  • the heat generated by the light source device 12 can be dissipated to the outside of the backlight module 1 in time, so that no additional external heat dissipating components are needed outside the backlight module 1 , thereby simplifying the backlight.
  • the overall structure of the module 1 and the cost of external heat sink components are saved.
  • the backlight module and the liquid crystal display device of the embodiments of the present invention have the advantages of high heat dissipation efficiency.

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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)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种背光模组（1）以及包括其的液晶显示装置（3）。该背光模组（1）包括光源装置（12）、散热装置（14）和背板（16）。该散热装置（14）设置于该光源装置（12）和该背板（16）之间，并分别与该光源装置（12）和该背板（16）接触。该光源装置（12）包括多个点光源（122）和印刷电路板（124），该多个点光源（122）分别设置于该印刷电路板（124）上。该散热装置（14）包括散热本体（142）和多个散热单元（144），该背板（16）包括多个开口（162），该多个散热单元（144）分别穿过该多个开口（162）。通过在散热本体（142）上形成多个散热单元（144），且该散热单元（144）通过背板（16）的开口（162）外露，该背光模组（1）和液晶显示装置（3）提高了散热效率。

Description

背光模组及液晶显示装置
【技术领域】
本发明实施例涉及平面显示领域，尤其涉及一种散热效率较高的背光模组（BLM）及应用所述背光模组的液晶显示装置（LCD）。
【背景技术】
液晶显示装置因具有低辐射性、体积轻薄短小及耗电低等特点，已广泛应用于手机、个人数字助理（PDA）、笔记本电脑（Notebook）、个人电脑（PC）及电视（TV）等领域。由于液晶显示面板中的液晶材料本身不具有发光特性，因此为达到显示效果，需给液晶显示面板提供一面光源装置以实现显示功能，如背光模组，其功能在于为液晶显示面板提供亮度充分且分布均匀的面光源。
由于能耗、耐用性和环保等方面的要求，高效能发光二极管（Light Emitting Diode，LED）在背光模组应用中日益取代以往应用广泛的冷阴极荧光灯（CCFL）成为背光模组中光源的较佳选择。
目前，在背光模组中，通常包括多个发光二极管、印刷电路板（PCB）、铝挤和背板。其中，所述发光二极管焊接在所述印刷电路板上，所述印刷电路板与所述铝挤接触，所述铝挤再进一步与所述背板接触。所述发光二极管发光时所产生的热量通过所述印刷电路板传递至所述铝挤，再通过所述铝挤传递至所述背板继续向外散发。这种结构的背板模组在散热方面主要存在如下问题：
首先，铝挤的尺寸，例如长度、宽度和高度等，会影响散热效率,但受限于背光模组的内部空间，所述铝挤的尺寸受到明显的空间限制；
其次，由于背光模组通常还包括导光板（LGP）和光学薄膜（Optical Films），在背光模组完成组装后，通常会形成一封闭空间，造成所述铝挤难以直接与背光模组的外部进行空气对流散热，降低了背光模组的散热效率。
【发明内容】
本发明主要解决的技术问题是提高背光模组的散热效率。
为了解决上述技术问题本发明采用的技术方案是，提供一种背光模组，包括光源装置、散热装置和背板，散热装置设置于光源装置和背板之间，并与光源装置和背板分别接触，其特征在于：光源装置包括多个点光源和印刷电路板，多个点光源分别设置于印刷电路板上；散热装置包括散热本体和多个散热单元，多个散热单元分别设置于所述散热本体上；背板包括多个开口和多个镂空图案，多个镂空图案分别邻近多个开口，并分别对应于多个散热单元，多个散热单元分别穿过多个开口。
在本发明一个较佳实施例中，散热本体为矩形平板结构。
在本发明一个较佳实施例中，散热本体位于光源装置与多个开口之间。
在本发明一个较佳实施例中，多个散热单元与散热本体为一体成型结构。
在本发明一个较佳实施例中，多个散热单元通过冲压或者化学刻蚀方式形成于散热本体上。
在本发明一个较佳实施例中，多个散热单元为散热鳍片。
在本发明一个较佳实施例中，多个散热单元分别穿过多个开口，并露出于背板的外部。
为了解决上述技术问题本发明采用的另一个技术方案是，提供一种背光模组，所述背光模组包括光源装置、散热装置和背板。所述散热装置设置于所述光源装置和所述背板之间，并分别与所述光源装置和所述背板接触。所述散热装置包括散热本体和多个散热单元，所述多个散热单元分别设置于所述散热本体上。所述背板包括多个开口，所述多个散热单元分别穿过所述多个开口。
在本发明一个较佳实施例中，所述散热本体为矩形平板结构。
在本发明一个较佳实施例中，所述散热本体位于所述光源装置与所述多个开口之间。
在本发明一个较佳实施例中，所述光源装置包括多个点光源和印刷电路板，所述多个点光源分别设置于所述印刷电路板上。
在本发明一个较佳实施例中，所述多个散热单元与所述散热本体为一体成型结构。
在本发明一个较佳实施例中，所述多个散热单元通过冲压或者化学刻蚀方式形成于所述散热本体上。
在本发明一个较佳实施例中，所述多个散热单元为散热鳍片。
在本发明一个较佳实施例中，所述多个散热单元分别穿过所述多个开口，并露出于所述背板的外部。
在本发明一个较佳实施例中，所述背板包括多个镂空图案，所述多个镂空图案分别邻近所述多个开口，并分别对应于所述多个散热单元。
为了解决上述技术问题本发明采用的又一个技术方案是，提供一种液晶显示装置，所述液晶显示装置包括背光模组。所述背光模组包括光源装置、散热装置和背板。所述散热装置设置于所述光源装置和所述背板之间，并分别与所述光源装置和所述背板接触。所述散热装置包括散热本体和多个散热单元，所述多个散热单元分别设置于所述散热本体上。所述背板包括多个开口，所述多个散热单元分别穿过所述多个开口。
本发明的有益效果是：区别于现有技术的情况，本发明实施例的背光模组和液晶显示装置通过在散热本体上形成多个散热单元，增加了散热装置的散热面积，提高背光模组的散热效率，而且所述散热单元通过背板的开口外露，可以直接向外散热，进一步提高背光模组的散热效率，此外还不需在背光模组外部额外设置其它散热部件。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1是本发明优选实施例背光模组的侧视结构示意图；
图2是图1所示背光模组沿AB方向的平面结构示意图；
图3是本发明优选实施例液晶显示装置的侧视结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明实施例公开了一种背光模组，请一并参阅图1和图2。其中，图1是本发明优选实施例背光模组的侧视结构示意图，图2是图1所示背光模组沿AB方向的平面结构示意图。
所述背光模组1包括光源装置12、散热装置14和背板16。所述散热装置14设置于所述光源装置12和所述背板16之间，并分别与所述光源装置12和所述背板16接触。所述散热装置14包括散热本体142和多个散热单元144，所述多个散热单元144分别设置于所述散热本体142上。所述背板16包括多个开口162，所述多个散热单元144分别穿过所述多个开口162。
所述光源装置12的主要作用是提供亮度充分的光线，其包括多个点光源122和电路板124，所述多个点光源122分别设置于所述电路板124上。例如，所述多个点光源122可以直线排列设置于所述电路板124上，也可以以阵列形式排列设置于所述电路板124上，还可以根据实际需要，以其它合适的方式排列设置于所述电路板124上。在本实施例中，所述电路板124可以为印刷电路板，所述点光源122可以为发光二极管，并焊接于所述电路板124上，所述电路板124与一电源（图未示）电性连接。
所述背板16的主要作用是保持所述背光模组1的物理强度，支撑所述背光模组1内的多个元件，并将背光模组1内部产生的热量向外部散发。其中，所述背板16的材料为金属或合金，例如所述背板16可以为铝、铁、镁或者其合金材料，通过挤压成型等方式形成。
进一步的，在保证所述背板16的物理强度足够的情况下，所述背板16还可以设置多个镂空图案（图未示），所述多个镂空图案分别邻近所述多个开口162，并分别对应于所述多个散热单元144。所述多个镂空图案可以促进所述背板16两侧的空气流通，更加有效提高了所述背光模组1的散热效率。
所述散热装置14由导热性良好的材料制得，例如所述散热装置14可以由铝或铝合金经过挤出成型制得。所述散热本体142为矩形平板结构，其位于所述光源装置12与所述多个开口162之间。其中，所述多个散热单元144与所述散热本体142为一体成型结构，例如，所述多个散热单元144可以通过冲压或者化学刻蚀方式形成于所述散热本体142上。设置在所述散热本体142上的所述多个散热单元144可以增加所述散热装置14的有效散热面积，从而提高所述散热装置14的散热能力。
进一步的，所述散热单元144自所述散热本体142向外延伸，分别穿过所述多个开口162，并露出于所述背板16的外部。所述多个散热单元144可以为散热鳍片，其形状没有具体限制，例如可以为鱼鳞形、矩形、椭圆形、三角形、圆形或者其它合适的多边形。
所述背光模组1的散热方式为：所述点光源122产生的热量通过所述电路板124传递至所述散热装置14的散热本体142，所述散热装置14的散热本体142将热量传递给所述背板16，所述背板16再进一步对外散发热量，此外，所述散热装置14的散热单元144还将传递至所述散热装置14的热量直接向所述背板16的外部散发，进而提高散热能力。
本发明还提供了一种液晶显示装置，请参阅图3，所述液晶显示装置3包括所述背光模组1和液晶显示面板2，所述液晶显示面板2设置在所述背光模组1的前方，所述背光模组1发出的光照亮所述液晶显示面板2来进行显示。所述液晶显示装置3可以为液晶显示器或者液晶电视机（LCD-TV）。
本发明的有益效果是：区别于现有技术的情况，在本发明实施例的所述背光模组1及应用所述背光模组1的液晶显示装置3中，通过在所述散热本体142上形成多个所述散热单元144，增加了所述散热装置14的散热面积，提高了所述背光模组1的散热效率。而且，所述散热单元144通过所述背板16的所述开口162外露，可以直接向所述背板16的外部散热，进一步提高了所述背光模组1的散热效率。此外，所述背板16上的所述镂空图案对应于所述多个散热单元144，可以促进所述背板16内外的空气流通，更进一步提高了所述背光模组1的散热效率。通过上述方式，所述光源装置12产生的热量可以及时向所述背光模组1的外部散发，因此不需在所述背光模组1的外部额外的外接其它散热部件，从而简化了所述背光模组1的整体结构和节省了因外接其它散热部件带来的成本。
综上所述，本发明实施例的背光模组及液晶显示装置具有散热效率较高的优点。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (17)

  1. 一种背光模组，包括光源装置、散热装置和背板，所述散热装置设置于所述光源装置和所述背板之间，并与所述光源装置和所述背板分别接触，其特征在于：
    所述光源装置包括多个点光源和印刷电路板，所述多个点光源分别设置于所述印刷电路板上；
    所述散热装置包括散热本体和多个散热单元，所述多个散热单元分别设置于所述散热本体上；
    所述背板包括多个开口和多个镂空图案，所述多个镂空图案分别邻近所述多个开口，并分别对应于所述多个散热单元，所述多个散热单元分别穿过所述多个开口。
  2. 根据权利要求1所述的背光模组，其特征在于：所述散热本体为矩形平板结构。
  3. 根据权利要求1所述的背光模组，其特征在于：所述散热本体位于所述光源装置与所述多个开口之间。
  4. 根据权利要求1所述的背光模组，其特征在于：所述多个散热单元与所述散热本体为一体成型结构。
  5. 根据权利要求4所述的背光模组，其特征在于：所述多个散热单元通过冲压或者化学刻蚀方式形成于所述散热本体上。
  6. 根据权利要求1所述的背光模组，其特征在于：所述多个散热单元为散热鳍片。
  7. 根据权利要求1所述的背光模组，其特征在于：所述多个散热单元分别穿过所述多个开口，并露出于所述背板的外部。
  8. 一种背光模组，包括光源装置、散热装置和背板，所述散热装置设置于所述光源装置和所述背板之间，并与所述光源装置和所述背板分别接触，其特征在于：所述散热装置包括散热本体和多个散热单元，所述多个散热单元分别设置于所述散热本体上，所述背板包括多个开口，所述多个散热单元分别穿过所述多个开口。
  9. 根据权利要求8所述的背光模组，其特征在于：所述散热本体为矩形平板结构。
  10. 根据权利要求8所述的背光模组，其特征在于：所述散热本体位于所述光源装置与所述多个开口之间。
  11. 根据权利要求8所述的背光模组，其特征在于：所述多个散热单元与所述散热本体为一体成型结构。
  12. 根据权利要求11所述的背光模组，其特征在于：所述多个散热单元通过冲压或者化学刻蚀方式形成于所述散热本体上。
  13. 根据权利要求8所述的背光模组，其特征在于：所述多个散热单元为散热鳍片。
  14. 根据权利要求8所述的背光模组，其特征在于：所述多个散热单元分别穿过所述多个开口，并露出于所述背板的外部。
  15. 根据权利要求8所述的背光模组，其特征在于：所述背板包括多个镂空图案，所述多个镂空图案分别邻近所述多个开口，并分别对应于所述多个散热单元。
  16. 根据权利要求8所述的背光模组，其特征在于：所述光源装置包括多个点光源和印刷电路板，所述多个点光源分别设置于所述印刷电路板上。
  17. 一种液晶显示装置，其特征在于，包括权利要求1至16任一所述的背光模组。
PCT/CN2011/084014 2011-12-13 2011-12-14 背光模组及液晶显示装置 WO2013086712A1 (zh)

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