CN104317088A - 一种背光模组以及显示装置 - Google Patents

一种背光模组以及显示装置 Download PDF

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CN104317088A
CN104317088A CN201410568932.6A CN201410568932A CN104317088A CN 104317088 A CN104317088 A CN 104317088A CN 201410568932 A CN201410568932 A CN 201410568932A CN 104317088 A CN104317088 A CN 104317088A
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backlight module
pcb substrate
display device
substrate
graphite
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CN104317088B (zh
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朱琳
武延兵
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BOE Technology Group Co Ltd
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Priority to US14/780,349 priority patent/US20160327832A1/en
Priority to EP15763807.3A priority patent/EP3211476B1/en
Priority to PCT/CN2015/074267 priority patent/WO2016061983A1/zh
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    • G—PHYSICS
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    • 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
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    • G02F1/133553—Reflecting elements
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    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
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    • 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
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    • 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
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Abstract

本发明涉及显示技术领域，特别涉及一种背光模组以及显示装置。该背光模组包括：PCB基板，所述PCB基板的一侧设有若干个光源器件，所述PCB基板的另一侧设有石墨导热层。本发明提供的背光模组以及显示装置，通过采用石墨导热层对机身中的热量进行导热处理，利用石墨自身特殊特性进行导热，使得其水平方向导热系数高达1000w/mk，该导热参数可将石墨导热层的贴附方向与热气流走向同方向进行散热，最大程度提高散热效率，避免光衰现象以及延长光源的使用寿命。

Description

一种背光模组以及显示装置
技术领域
本发明涉及显示技术领域，特别涉及一种背光模组以及显示装置。
背景技术
在液晶显示器的制作过程中，为了能够较好地将机身中光源产生的热量传递出去，通常采用铝基板散热方式，具体方式为将铝基板与机身采用螺丝紧固，进而将光源的热量散发出去。
在实际应用中发现，该种散热方式的机身在长期使用的过程中，铝基板的散热效率比较底下，造成光源的热量散热不够及时，导致光源一直处于高温状态，进而导致光源的光衰严重，进而影响到光亮以及光源的使用寿命，使得最终产品的显示品质得不到保障。
发明内容
(一)所要解决的技术问题
本发明所要解决的技术问题是提供一种背光模组以及显示装置，以克服现有技术中采用铝基板对光源进行散热导致的散热效果不理想，容易造成光源光衰严重以及使用寿命低下等缺陷。
(二)技术内容
为了解决上述技术问题，本发明一方面提供一种背光模组，包括：
PCB基板，所述PCB基板的一侧设有若干个光源器件，所述PCB基板的另一侧设有石墨导热层。
优选地，所述PCB基板为铝板。
优选地，所述石墨导热层涂附在PCB基板上。
优选地，所述光源器件为LED灯。
优选地，所述石墨导热层为片状，所述片状石墨导热层贴附在PCB基板上。
优选地，还包括机身背板，所述PCB板位于机身背板的两侧。
优选地，所述机身背板底部两侧设有通孔。
优选地，所述通孔为倾斜通孔。
另一方面，本发明还提供一种显示装置，包括上述的背光模组。
优选地，该显示装置还包括形成对盒的上基板和下基板，所述上基板的上表面设有上偏光片，其上基板的下表面设有彩膜层，所述下基板的内表面制作有线栅偏光膜和阵列层；所述上下基板内表面制作有取向层，所述对盒内夹有液晶层。所述液晶层周边用封框胶密封；所述下基板的外表面设有纳米颗粒，且纳米颗粒面设有反射板。
(三)有益效果
本发明提供一种背光模组以及显示装置，通过采用石墨导热层对机身中的热量进行导热处理，利用石墨自身特性，使得其水平方向导热系数高达1000w/mk，该导热参数可将石墨导热层的设置方向与热气流走向同方向进行散热，最大程度提高散热效率，避免光衰现象以及延长光源的使用寿命。
附图说明
图1为本发明实施例背光模组结构示意图；
图2为本发明实施例背光模组中通孔俯视图；
图3为本发明实施例背光模组中通孔侧视图。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不是用来限制本发明的范围。
如图1所示，本发明提供一种背光模组，该背光模组，包括：
PCB(Printed Circuit Board，印制电路板)基板1，所述PCB基板1的一侧设有若干个光源器件2，所述PCB基板1的另一侧设有石墨导热层3。
通过采用石墨导热层对机身中的热量进行导热处理，利用石墨自身特性，使得其水平方向导热系数高达1000w/mk，该导热参数可将石墨导热层的设置方向与热气流走向同方向进行散热，最大程度提高散热效率，避免光衰现象以及延长光源的使用寿命。
需要说明的是，经过大量实验得出，不管从经济角度考虑，还是从工艺方法以及散热效果考虑，采用石墨作为导热层为散热材料最为优选的材料，该石墨为一种纳米先进复合材料，适应任何表面均匀导热，具有EMI电磁屏蔽效果，是一种全新的导热散热材料，具有独特的晶粒取向，可沿两个方向均匀导热。
具体的，该光源器件2在实际应用中多采用LED灯，多个LED灯分布在PCB基板上，为了起到一些散热作用，该PCB基板为铝板，当然，该PCB板除了采用铝板材料，也可以采用与铝板具有相同或相似物理特性的其他材料。
其中，该石墨导热层可以直接涂附在PCB基板上，当然，也可以设置该石墨导热层为片状，该片状石墨导热层可以贴附在PCB基板上。片层状结构可很好地适应任何表面。
该两种方式工艺简单，容易实现。
另外，该背光模组还包括机身背板，所述PCB板位于机身背板的两侧，从而与LED灯一起形成侧入式光源。
如图2-3所示，在机身背板底部两侧设有通孔4。采用倾斜角度，较优地，为了进一步减轻灰尘的进入而影响散热，并且可以有效防止漏光现象，该对通孔4进行倾斜设置，即该通孔4为倾斜通孔。另一方面，本发明还提供一种显示装置，包括上述的背光模组。该显示装置还包括形成对盒的上基板和下基板，所述上基板的上表面设有上偏光片，其上基板的下表面设有彩膜层，所述下基板的内表面制作有线栅偏光膜和阵列层；所述上下基板内表面制作有取向层，所述对盒内夹有液晶层。所述液晶层周边用封框胶密封；所述下基板的外表面设有纳米颗粒，且纳米颗粒面设有反射板。
该种结构的显示装置，通过采用石墨导热层对机身中的热量进行导热处理，利用石墨自身特性，使得其水平方向导热系数高达1000w/mk，该导热参数可将石墨导热层的设置方向与热气流走向同方向进行散热，最大程度提高散热效率，避免光衰现象以及延长光源的使用寿命。
该显示装置可以为液晶显示屏、液晶显示器、平板电脑、笔记本、电子书等电子产品。
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来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。

Claims (10)

1.一种背光模组，其特征在于，包括：
PCB基板，所述PCB基板的一侧设有若干个光源器件，所述PCB基板的另一侧设有石墨导热层。
2.如权利要求1所述的背光模组，其特征在于，所述石墨导热层涂附在PCB基板上。
3.如权利要求1所述的背光模组，其特征在于，所述石墨导热层为片状，所述片状石墨导热层贴附在PCB基板上。
4.如权利要求1所述的背光模组，其特征在于，所述光源器件为LED灯。
5.如权利要求1所述的背光模组，其特征在于，所述PCB基板为铝板。
6.如权利要求1所述的背光模组，其特征在于，还包括机身背板，所述PCB板位于机身背板的两侧。
7.如权利要求6所述的背光模组，其特征在于，所述机身背板底部两侧设有通孔。
8.如权利要求7所述的背光模组，其特征在于，所述通孔为倾斜通孔。
9.一种显示装置，其特征在于，包括权利要求1-8任一项所述的背光模组。
10.如权利要求9所述的显示装置，其特征在于，该显示装置还包括形成对盒的上基板和下基板，所述上基板的上表面设有上偏光片，其上基板的下表面设有彩膜层，所述下基板的内表面制作有线栅偏光膜和阵列层；所述上下基板内表面制作有取向层，所述对盒内夹有液晶层。所述液晶层周边用封框胶密封；所述下基板的外表面设有纳米颗粒，且纳米颗粒面设有反射板。
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