WO2020073424A1 - 散热结构、采用该散热结构的背光模组及显示装置 - Google Patents

散热结构、采用该散热结构的背光模组及显示装置 Download PDF

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Publication number
WO2020073424A1
WO2020073424A1 PCT/CN2018/115746 CN2018115746W WO2020073424A1 WO 2020073424 A1 WO2020073424 A1 WO 2020073424A1 CN 2018115746 W CN2018115746 W CN 2018115746W WO 2020073424 A1 WO2020073424 A1 WO 2020073424A1
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Prior art keywords
heat dissipation
dissipation structure
backlight module
hole
base
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PCT/CN2018/115746
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English (en)
French (fr)
Inventor
景小红
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惠州市华星光电技术有限公司
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Publication of WO2020073424A1 publication Critical patent/WO2020073424A1/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
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
    • 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
    • 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 invention relates to the field of liquid crystal display and backlight, in particular to a heat dissipation structure, a backlight module adopting the heat dissipation structure and a display device.
  • Liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as thin body, power saving, no radiation, etc., and has been widely used.
  • Most of the liquid crystal display devices on the existing market are backlight type liquid crystal display devices, which include a liquid crystal panel and a backlight module ( backlight module).
  • the backlight module is divided into two types: an edge-lit backlight module and a direct-lit backlight module according to different incident positions of the light source.
  • the direct type backlight module uses a light-emitting light source such as CCFL (Cold Cathode Fluorescent Lamp, cathode fluorescent lamp) or LED (Light Emitting Diode (light emitting diode) is arranged behind the liquid crystal panel, and directly forms a surface light source for the liquid crystal panel.
  • the side-lit backlight module is to set the backlight LED light bar (Light bar) on the edge of the back plate behind the liquid crystal panel side, and the light emitted by the LED light bar enters the light from the light guide plate (LGP, Light Guide Plate) side The surface enters the light guide plate, and is reflected and diffused from the light guide plate exit surface, and then passes through the optical film group to form a surface light source for the liquid crystal panel.
  • CCFL Cold Cathode Fluorescent Lamp, cathode fluorescent lamp
  • LED Light Emitting Diode
  • the traditional side-entry backlight structure uses integrated extruded aluminum as the heat conduction and heat dissipation element.
  • the heat dissipation effect depends on the area of the extruded aluminum. The larger the area, the better the heat dissipation effect.
  • the present invention provides a heat dissipation structure including a base, the base is provided with a plurality of through holes, and the through holes penetrate the base along the thickness direction of the base.
  • the ratio of the diameter of the through hole to the length of the hole is less than or equal to 0.2.
  • the side walls of two adjacent through holes form a partition wall, and the plurality of partition walls are of equal thickness.
  • the diameter of the through hole is greater than the thickness of the partition wall.
  • the cross-sectional shape of the through hole is circular, triangular or honeycomb.
  • the base is an aluminum heat sink.
  • the invention also provides a backlight module adopting the above heat dissipation structure.
  • the backlight module includes the heat dissipation structure and a light source assembly.
  • the light source assembly is disposed on the base, and the through hole faces the The direction of the light source assembly extends.
  • the light source assembly is a backlight.
  • the light source assembly is connected to the base of the heat dissipation structure through a gasket.
  • the ratio of the diameter of the through hole to the length of the hole is less than or equal to 0.2.
  • the side walls of two adjacent through holes form a partition wall, and the plurality of partition walls are of equal thickness.
  • the diameter of the through hole is greater than the thickness of the partition wall.
  • the cross-sectional shape of the through hole is circular, triangular or honeycomb.
  • the base is an aluminum heat sink.
  • the invention also provides a display device including a display panel and the backlight module as described above.
  • the display panel is a liquid crystal display panel.
  • the advantage of the present invention is that the heat dissipation structure of the present invention is provided with a plurality of through holes on the base to form dense voids, which greatly increases the surface area of the heat dissipation structure of the present invention.
  • the contact area of the heat dissipation structure of the present invention with air is increased, the convection effect with the air is greatly enhanced, and the heat dissipation efficiency of the heat dissipation structure of the present invention is greatly improve.
  • FIG. 1 is a schematic top view of an embodiment of the heat dissipation structure of the present invention.
  • FIG. 2 is a schematic cross-sectional view of FIG. 1 along the A-A direction;
  • FIG. 3 is an enlarged schematic view of part B in FIG. 2;
  • FIG. 4 is an enlarged schematic view of another embodiment of the heat dissipation structure of the present invention.
  • FIG. 5 is an enlarged schematic view of part C in FIG. 1;
  • FIG. 6 is an enlarged schematic view of another embodiment of the heat dissipation structure of the present invention.
  • FIG. 7 is an enlarged schematic view of yet another embodiment of the heat dissipation structure of the present invention.
  • FIG. 8 is an enlarged schematic view of a part of the structure of the backlight module of the present invention.
  • FIG. 9 is a schematic diagram of the structure of the display device of the present invention.
  • first and second are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
  • the features defined as “first” and “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more, unless otherwise specifically limited.
  • connection should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or integrally connected; it can be mechanical, electrical, or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediary, it can be the connection between two elements or the interaction of two elements relationship.
  • the first feature “above” or “below” the second feature may include the first and second features in direct contact, or may include the first and second features Contact not directly but through other features between them.
  • the first feature is “above”, “above” and “above” the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontal than the second feature.
  • FIG. 1 is a schematic top view of an embodiment of the heat dissipation structure 1 of the present invention
  • FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1
  • FIG. 3 is an enlarged schematic view of part B in FIG. 2.
  • the heat dissipation structure 1 of the present invention includes a base 10.
  • a plurality of through holes 11 are provided on the base 10.
  • the base 10 is an aluminum heat sink.
  • the through hole 11 penetrates the base 10 along the thickness direction of the base 10.
  • the axial direction of the through hole 11 has an angle ⁇ with the plane where the base 10 is located, and the angle ⁇ is a right angle or an acute angle.
  • the plane where the base 10 is located is shown by a dotted line X
  • the axial direction of the through hole 11 is shown by a dotted line Y
  • the axial Y of the through hole 11 and the base 10 are located Of the plane X has the included angle ⁇ .
  • the angle ⁇ between the axial direction of the through hole 11 and the plane where the base 10 is located is 90 degrees, that is, the axial direction of the through hole 11 is perpendicular to the position where the base 10 is located flat.
  • the included angle ⁇ between the axial direction Y of the through-hole 11 and the plane X where the base 10 is located is an acute angle, that is, the through-hole 11 obliquely penetrates the ⁇ 10 ⁇ The base 10.
  • the heat dissipation structure 1 of the present invention is provided with a plurality of through holes 11 on the base 10 to form dense cavities, which greatly increases the surface area of the heat dissipation structure 1 of the present invention.
  • the contact area of the heat dissipation structure 1 of the present invention with air is increased, and the convection effect with the air is greatly enhanced. substantial improvement.
  • the ratio of the diameter D of the through hole 11 to the length H of the hole is less than or equal to 0.2, forming a capillary hole.
  • the advantage is that the capillary principle of the through hole 11 is used to improve the heat dissipation performance of the heat dissipation structure 1. Specifically, assuming that the bottom of the through hole 11 is an area that needs to be in contact with the light source assembly 80 (marked in FIG.
  • the bottom of the through hole 11 is a high-heat area, and the top of the through hole 11 is a low heat
  • the air in the through hole 11 expands by heat, which will push the hot air to flow from the high heat area to the low heat area, thus forming a flow in the through hole 11
  • the airflow takes away heat and improves the heat dissipation performance of the heat dissipation structure 1.
  • FIG. 5 is an enlarged schematic view of part C in FIG. 1.
  • a partition wall 12 is formed on the side walls of two adjacent through holes 11. That is, one partition wall 12 is formed between every two adjacent through holes 11.
  • the plurality of partition walls 12 are of equal thickness.
  • the plurality of partition walls 12 having the same thickness means that each of the partition walls 12 has the same thickness, or each of the partition walls 12 has the same shape and the same thickness variation trend.
  • the advantage of the equal thickness of the partition wall 12 is that it can evenly distribute heat, avoid local overheating, and improve heat dissipation efficiency. In this embodiment, please refer to FIG.
  • the shape of the cross section of the through hole 11 is circular, and the shape of each partition wall 12 is the same and the thickness variation trend is the same.
  • the shape of the cross section of the through hole 11 is a honeycomb shape. Please refer to FIG. 6, the thickness of the plurality of partition walls 12 is equal.
  • the cross-sectional shape of the through hole 11 is triangular. Please refer to FIG. 7, the thickness of the partition wall 12 is equal.
  • the heat dissipation structure 1 of the present invention does not limit the shape of the cross section of the through hole 11.
  • the diameter of the through hole 11 is greater than the thickness of the partition wall 12, so that the occupancy rate of the through hole 11 on the heat dissipation structure 1 increases, the surface area of the heat dissipation structure 1 further expands, and the heat dissipation structure 1 The heat dissipation performance is further improved.
  • the invention also provides a backlight module 8 adopting the above heat dissipation structure 1.
  • FIG. 8 is an enlarged schematic view of a part of the structure of the backlight module 8. Referring to FIG. 8, the backlight module 8 includes the heat dissipation structure 1 and a light source assembly 80 closely attached to the heat dissipation structure 1.
  • the backlight module 8 is also shown in FIG. 9. As shown in FIG. 9, the backlight module 8 further includes a back plate 81 located on the bottom surface, and a light guide plate 82 located above the back plate 81.
  • the heat dissipation structure 1 and the light source assembly 80 are disposed on one side of the light guide plate 82, wherein the light emitted by the light source assembly 80 can enter the light guide plate 82 from one side of the light guide plate 82 And diffused into the bottom surface of the light guide plate 82 after being diffused into a uniform plane light, which is emitted from the top surface of the light guide plate 82.
  • the backlight module 8 also includes some other components, such as a reflective sheet, an optical film, and the like.
  • a reflective sheet such as a reflective sheet, an optical film, and the like.
  • the improvement of the heat dissipation structure of the present invention does not involve these components, it is not shown in FIG. 9 and will not be repeated here.
  • the light source assembly 80 is disposed on the base 10, and the through hole 11 extends toward the light source assembly 80.
  • the heat of the light source assembly 80 is dissipated through the heat dissipation structure 1. Specifically, after the heat dissipated by the light source assembly 80 enters the heat dissipation structure 1, it will exchange heat with the outside air through the heat dissipation structure 11 to achieve heat dissipation.
  • the heat dissipation structure 1 is provided with a plurality of through holes 11 on the base 10 to form dense voids, which greatly increases the surface area of the heat dissipation structure 1.
  • the contact area of the heat dissipation structure 1 of the present invention with air is increased, and the convection effect with the air is greatly enhanced, thereby making the The heat dissipation efficiency of the heat dissipation structure 1 is greatly improved.
  • the light source assembly 80 includes a plurality of light emitting members, and the light emitting members may be LED light sources.
  • the LED light emitting element is connected to the surface (also referred to as the bottom surface) of the base 10 of the heat dissipation structure 1 through a gasket 801.
  • the light source assembly 80 may also be other light-emitting elements that need heat dissipation, and the present invention does not limit the use range of the heat dissipation structure 1.
  • FIG. 9 is a schematic structural diagram of the display device 9. Please refer to FIGS. 3 and 9.
  • the display device 9 includes a display panel 90 and the backlight module 8.
  • the display panel 90 includes but is not limited to a liquid crystal display panel.
  • the backlight module 8 includes but is not limited to an edge-lit backlight module.
  • the backlight module 8 adopts the heat dissipation structure 1. Since the base 10 of the heat dissipation structure 1 is provided with a plurality of through holes 11, the heat dissipation of the heat dissipation structure 1 is greatly improved The performance provides a good heat dissipation channel for the heat generated by the backlight module 8 to avoid damage to the backlight module 8 caused by excessive heat.

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

Abstract

一种散热结构（1）、采用该散热结构（1）的背光模组（8）及显示装置（9）。散热结构（1）在基座（10）上设置多个通孔（11），形成密集空洞，大大增加了散热结构（1）的表面积。在同等接触条件下，相较于现有的散热结构，该散热结构（1）与空气的接触面积增加，其与空气的对流效果大大增强，进而散热结构（1）的散热效率被大幅度提高。

Description

散热结构、采用该散热结构的背光模组及显示装置 技术领域
本发明涉及液晶显示及背光领域，尤其涉及一种散热结构、采用该散热结构的背光模组及显示装置。
 背景技术
液晶显示装置（LCD, Liquid Crystal Display )具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶面板及背光模组（ backlight module )。背光模组依照光源入射位置的不同分成侧入式背光模组与直下式背光模组两种。直下式背光模组是将发光光源例如 CCFL(Cold Cathode Fluorescent Lamp , 阴极萤光灯管）或LED(Light Emitting Diode发光二极管)设置在液晶面板后方，直接形成面光源提供给液晶面板。而侧入式背光模组是将背光源 LED 灯条（Light bar )设于液晶面板侧后方的背板边缘，LED 灯条发出的光线从导光板 ( LGP , Light Guide Plate ) 一侧的入光面进入导光板，经反射和扩散后从导光板出光面射出，在经由光学膜片组，以形成面光源提供给液晶面板。
随着消费者观影体验的提升，TV产品尺寸越来越大，外观厚度越来越薄，侧入式背光结构越来越成为设计者的首选，与此同时，解析度的大幅提升造成穿透率降低，使得侧入式背光不得不选用高功率的LED，如此造成背光模组的散热问题越来越凸显，为了提升薄形化大尺寸模组的市占率，必须先要解决模组光源的散热问题。
 技术问题
目前，传统侧入式背光结构采用一体式挤型铝作为导热、散热原件，其散热效果取决于挤型铝的面积，面积越大，散热效果越好，然而会造成背光模组成本的提升。
因此，亟需一种散热效果好且成本较低的散热结构。
 技术解决方案
为了解决上述问题，本发明提供了一种散热结构，包括一基座，所述基座上设置有多个通孔，所述通孔沿所述基座的厚度方向贯穿所述基座。
在一实施例中，所述通孔的孔径与孔长的比值小于或者等于0.2。
在一实施例中，相邻的两个所述通孔的侧壁形成一间隔壁，多个所述间隔壁等厚。
在一实施例中，所述通孔的孔径大于所述间隔壁的厚度。
在一实施例中，所述通孔的横截面的形状为圆形、三角形或蜂窝形。
在一实施例中，所述基座为一铝制散热板。
本发明还提供一种采用上述的散热结构的背光模组，所述背光模组包括所述散热结构及一光源组件，所述光源组件设置在所述基座上，所述通孔朝向所述光源组件的方向延伸。
在一实施例中，所述光源组件为背光源。
在一实施例中，所述光源组件通过一垫片连接在所述散热结构的所述基座上。
在一实施例中，所述通孔的孔径与孔长的比值小于或者等于0.2。
在一实施例中，相邻的两个所述通孔的侧壁形成一间隔壁，多个所述间隔壁等厚。
在一实施例中，所述通孔的孔径大于所述间隔壁的厚度。
在一实施例中，所述通孔的横截面的形状为圆形、三角形或蜂窝形。
在一实施例中，所述基座为一铝制散热板。
本发明还提供一种显示装置，包括一显示面板及如上述的背光模组。
在一实施例中，所述显示面板为液晶显示面板。
 有益效果
本发明的优点在于，本发明散热结构在所述基座上设置多个所述通孔，形成密集空洞，大大增加了本发明散热结构的表面积。在同等接触条件下，相较于现有的散热结构，例如剂型铝，本发明散热结构与空气的接触面积增加，其与空气的对流效果大大增强，进而本发明散热结构的散热效率被大幅度提高。
 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他的附图。
图1是本发明散热结构的一实施例的俯视示意图；
图2是图1沿A-A向的截面示意图；
图3是图2中B部位的放大示意图；
图4是本发明散热结构的另一实施例的放大示意图；
图5是图1中的C部位的放大示意图；
图6是本发明散热结构的又一实施例的放大示意图；
图7是本发明散热结构的再一实施例的放大示意图；
图8是本发明背光模组的部分结构放大示意图；
图9是本发明显示装置的结构示意图。
 本发明的实施方式
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
图1是本发明散热结构1的一实施例的俯视示意图，图2是图1沿A-A向的截面示意图，图3是图2中B部位的放大示意图。请参考图1、图2及图3，本发明散热结构1包括一基座10。在所述基座10上设置有多个通孔11。在本实施例中，所述基座10为一铝制散热板。
如图2、图3所示，所述通孔11沿所述基座10的厚度方向贯穿所述基座10。具体地说，所述通孔11的轴向与所述基座10所在的平面具有一夹角β，所述夹角β为直角或锐角。在图3中，所述基座10所在的平面采用虚线X绘示，所述通孔11的轴向采用虚线Y绘示，则所述通孔11的轴向Y与所述基座10所在的平面X具有所述夹角β。在本实施例中，所述通孔11的轴向与所述基座10所在的平面的所述夹角β为90度，即所述通孔11的轴向垂直所述基座10所在的平面。在其他实施例中，请参阅图4，所述通孔11的轴向Y与所述基座10所在的平面X的所述夹角β为锐角，即所述通孔11斜向贯穿所述基座10。
本发明散热结构1在所述基座10上设置多个所述通孔11，形成密集空洞，大大增加了本发明散热结构1的表面积。在同等接触条件下，相较于现有的散热结构，例如剂型铝，本发明散热结构1与空气的接触面积增加，其与空气的对流效果大大增强，进而本发明散热结构1的散热效率被大幅度提高。
请继续参阅图3，所述通孔11的孔径D与孔长H的比值小于或者等于0.2，形成毛细孔。其优点在于，利用所述通孔11的毛细原理提升所述散热结构1的散热性能。具体地说，假设所述通孔11的底部为需要与光源组件80（标示在图8中）接触的区域，则所述通孔11的底部为高热区，所述通孔11的顶部为低热区；当光源组件80设置在所述散热结构1上后，所述通孔11内的空气受热膨胀，会推动热空气由高热区向低热区流动，从而会在所述通孔11中形成流动的气流，带走热量，提升所述散热结构1的散热性能。
图5是图1中C部位的放大示意图。请参阅图5，在所述基座10上，相邻的两个所述通孔11的侧壁形成一间隔壁12。即在每相邻的两个所述通孔11之间就形成一个所述间隔壁12。优选地，多个所述间隔壁12等厚。多个所述间隔壁12等厚是指每一所述间隔壁12的厚度相等，或者每一所述间隔壁12的形状相同且厚度变化趋势相同。所述间隔壁12等厚的优点在于，可使热量均匀分布，避免局部过热，提升散热效率。在本实施例中，请参阅图5，所述通孔11的截面的形状为圆形，每一所述间隔壁12的形状相同且厚度变化趋势相同。在另一实施例中，所述通孔11的截面的形状为蜂窝形，请参阅图6，多个所述间隔壁12的厚度相等。在另一实施例中，所述通孔11的截面的形状为三角形，请参阅图7，所述间隔壁12的厚度相等。其中，本发明散热结构1对所述通孔11的截面的形状不进行限定。
进一步，所述通孔11的孔径大于所述间隔壁12的厚度，使得所述通孔11在所述散热结构1上的占有率提升，所述散热结构1的表面积进一步扩大，所述散热结构1的散热性能进一步提升。
本发明还提供一种采用上述散热结构1的背光模组8。图8是所述背光模组8的部分结构放大示意图。请参阅图8，所述背光模组8包括所述散热结构1及一紧贴于所述散热结构1上的光源组件80。
所述背光模组8还表现于图9中。如图9所示，所述背光模组8还包括一位于底面的背板81、以及一位于所述背板81上方的导光板82。所述散热结构1及所述光源组件80配置于所述导光板82的一侧，其中由所述光源组件80发射出来的光线能够自所述导光板82的其中一侧面进入所述导光板82中，并经过所述导光板82的底面扩散之后转化为均匀的平面光线，从所述导光板82的顶面射出。
当然，所述背光模组8还包括有一些其他构件，例如反射片、光学膜片等。但由于本发明散热结构的改进未涉及到这些构件，所以未被表示于图9中，而此处也不再赘述。
更进一步地，所述光源组件80设置在所述基座10上，所述通孔11朝向所述光源组件80的方向延伸。所述光源组件80的热量通过所述散热结构1发散。具体地说，所述光源组件80散发的热量进入所述散热结构1后，会通过所述散热结构11与外界空气进行热交换，从而实现散热。
如上文所述，所述散热结构1在所述基座10上设置多个所述通孔11，形成密集空洞，大大增加了所述散热结构1的表面积。在与所述光源组件80同等的接触条件下，相较于现有的散热结构，例如剂型铝，本发明散热结构1与空气的接触面积增加，其与空气的对流效果大大增强，进而使得所述散热结构1的散热效率被大幅度提高。
此外，在本实施例中，所述光源组件80包括有多个发光件，并且所述发光件可以是LED光源。所述LED发光件通过一垫片801连接在所述散热结构1的所述基座10的表面（亦可称为底面）上。所述光源组件80还可以为其他需要散热的发光元件，本发明不限定所述散热结构1的使用范围。
本发明还提供一种显示装置。图9是所述显示装置9的结构示意图。请参阅图3及图9，所述显示装置9包括一显示面板90及所述背光模组8。所述显示面板90包括但不限于液晶显示面板。所述背光模组8包括但不限于侧入式背光模组。
在本发明显示装置中，所述背光模组8采用散热结构1，由于所述散热结构1的基座10上设置有多个所述通孔11，大幅度提高了所述散热结构1的散热性能，为所述背光模组8产生的热量提供了良好的散热通道，避免热量过高引起所述背光模组8的损坏。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
 工业实用性
本申请的主题可以在工业中制造和使用，具备工业实用性。

Claims (16)

  1. 一种散热结构，其包括一基座，所述基座上设置有多个通孔，所述通孔沿所述基座的厚度方向贯穿所述基座。
  2. 根据权利要求1所述的散热结构，其中所述通孔的孔径与孔长的比值小于或者等于0.2。
  3. 根据权利要求1所述的散热结构，其中相邻的两个所述通孔的一侧壁形成一间隔壁，多个所述间隔壁等厚。
  4. 根据权利要求3所述的散热结构，其中所述通孔的孔径大于所述间隔壁的厚度。
  5. 根据权利要求1所述的散热结构，其中所述通孔的横截面的形状为圆形、三角形或蜂窝形。
  6. 根据权利要求1所述的散热结构，其中所述基座为一铝制散热板。
  7. 一种采用权利要求1所述的散热结构的背光模组，其中所述背光模组包括所述散热结构及一光源组件，所述光源组件设置在所述基座上，所述通孔朝向所述光源组件的方向延伸。
  8. 根据权利要求7所述的背光模组，其中所述光源组件包括多个LED发光件，所述LED发光件通过一垫片连接在所述散热结构的所述基座的一表面上。
  9. 根据权利要求7所述的背光模组，其中所述背光模组还包括一位于一底面的背板、以及一位于所述背板上方的导光板，所述散热结构及所述光源组件配置于所述导光板的一侧。
  10. 根据权利要求7所述的背光模组，其中所述通孔的孔径与孔长的比值小于或者等于0.2。
  11. 根据权利要求7所述的背光模组，其中相邻的两个所述通孔的一侧壁形成一间隔壁，多个所述间隔壁等厚。
  12. 根据权利要求11所述的背光模组，其中所述通孔的孔径大于所述间隔壁的厚度。
  13. 根据权利要求7所述的背光模组，其中所述通孔的横截面的形状为圆形、三角形或蜂窝形。
  14. 根据权利要求7所述的背光模组，其中所述基座为一铝制散热板。
  15. 一种显示装置，其包括一显示面板及一如权利要求7所述的背光模组。
  16. 根据权利要求15所述的显示装置，其中所述显示面板为液晶显示面板，所述背光模组为侧入式背光模组。
PCT/CN2018/115746 2018-10-11 2018-11-15 散热结构、采用该散热结构的背光模组及显示装置 WO2020073424A1 (zh)

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