CN102262309A - 一种液晶显示屏 - Google Patents

一种液晶显示屏 Download PDF

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CN102262309A
CN102262309A CN2010101847464A CN201010184746A CN102262309A CN 102262309 A CN102262309 A CN 102262309A CN 2010101847464 A CN2010101847464 A CN 2010101847464A CN 201010184746 A CN201010184746 A CN 201010184746A CN 102262309 A CN102262309 A CN 102262309A
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liquid crystal
crystal panel
radiating
back cover
lamp bar
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杨延明
康财
谢南方
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SHENZHEN XINCHAOLIANG SPECIAL DISPLAY EQUIPMENT CO Ltd
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SHENZHEN XINCHAOLIANG SPECIAL DISPLAY EQUIPMENT CO Ltd
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Priority to CN2010101847464A priority Critical patent/CN102262309A/zh
Priority to PCT/CN2010/074118 priority patent/WO2011147108A1/zh
Priority to US13/806,396 priority patent/US9217820B2/en
Publication of CN102262309A publication Critical patent/CN102262309A/zh
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    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in 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
    • G02F1/133382—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
    • 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
    • G02F1/133628—Illuminating devices with cooling means

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

Abstract

本发明涉及一种液晶显示屏，包括：前框(1)，所述前框(1)中装设有液晶面板(2)、导光板(3)、LED灯条(4)和后壳(5)，所述导光板(3)平行于所述液晶面板(2)，且位于所述液晶面板(2)的里侧，所述LED灯条(4)位于所述导光板(3)的两端，所述后壳(5)位于所述导光板(3)的后侧面，所述后壳(5)为至少包括两层金属散热板(51)，所述每层散热板(51)之间平行设置具有间隙，所述散热板(51)与所述液晶面板(2)平行。该液晶显示屏的后壳包括多层散热板(51)，所述散热板(51)平行设置且具有间隙，相邻的散热板(51)之间形成散热风道，且散热板(51)上设置有蜂窝状的散热孔(6)，使热量容易从所述后壳中散发出去，保证了液晶显示屏对散热的要求。

Description

一种液晶显示屏
技术领域
本发明涉及液晶技术领域，更具体地说，涉及一种具有更好散热效果的液晶显示屏。
背景技术
作为信息显示终端设备的超高亮度液晶显示屏，在选用LED灯侧向背光的液晶显示器(屏)应用于高温环境中，特别是采用LED灯条作光源时，由于高温环境或采用高亮度液晶显示屏必须采用较大功率的LED灯条，这样，导致显示屏发热比较高，现有技术提供的液晶显示屏包括前框，所述前框中装设有液晶面板、导光板、LED灯条和后壳，所述导光板平行于所述液晶面板，且位于所述液晶面板的里侧，所述LED灯条位于所述导光板的两端，所述后壳位于所述导光板的后侧面，这样结构的液晶显示屏的后壳散热效果不好，不能满足发热高或者周围环境温度高的场合对液晶显示屏散热的要求。
发明内容
本发明要解决的技术问题在于，针对现有散热效果不好的缺陷，提供一种散热效果好的液晶显示屏。
本发明解决其技术问题所采用的技术方案是：
一种液晶显示屏，包括：前框，所述前框中装设有液晶面板、导光板、LED灯条和后壳，所述导光板平行于所述液晶面板，且位于所述液晶面板的里侧，所述LED灯条位于所述导光板的两端，所述后壳位于所述导光板的后侧面，其中，所述后壳为至少包括两层金属散热板，所述每层散热板之间平行设置具有间隙，所述散热板与所述液晶面板平行。
其中，优选的，所述散热板上设置有蜂窝状的散热孔。
其中，优选的，所述LED灯条的散热面与所述后壳的边缘部分相连。
其中，优选的，所述后壳的其余部分暴露于外界。
实施本发明的技术方案，具有以下有益效果：该液晶显示屏的后壳包括多层散热板，所述散热板平行设置且具有间隙，相邻的散热板之间形成散热风道，使热量容易从所述后壳中散发出去，保证了液晶显示屏对散热的要求。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1为本发明提供的液晶显示屏的结构示意图(截面剖视图)；
图2为本发明提供的液晶显示屏的散热板的主视图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种液晶显示屏，包括：前框1，所述前框1中装设有液晶面板2、导光板3、LED灯条4和后壳5，所述导光板3平行于所述液晶面板2，且位于所述液晶面板2的里侧，所述LED灯条4位于所述导光板3的两端，所述后壳5位于所述导光板3的后侧面。所述金属前框1，是定位液晶面板出光面，且边缘部分与后壳5相连接的金属框架。所述液晶面板2，边缘部分不出光面与金属前框1相连接，另一面与导光板3相连接。所述导光板3，主要功能是藉由光散乱原理将入射的平行光转换成平面垂直光，由LED灯条4产生光源产生的平行光源经导光板3转换成平面垂直光反射至液晶显示屏的出光面(液晶面板2)。
所述LED灯条4，为LCD侧向背光内的主发热体。LED灯条4出光面安装于导光板3两端的外侧。LED灯条4散热面与所示后壳5的边缘部分相连。
在本实施例中，所述后壳5为至少包括两层金属散热板51，所述散热板51同时可以作为后壳5，对该液晶显示屏起到保护的作用，另外，该散热板51固定装设在所述前框1中，所述每层散热板51之间平行设置具有间隙，所述散热板51与所述液晶面板2平行。在每层金属散热板51之间留有适当间隙、且相邻两层金属散热板51之间的间隙形成散热风道，所述散热风道相互相通，且与外界相通，最简单的方式是在散热板51上开口，使相邻的散热风道相互相通，且与外界相通，优选的实施例中，在所述散热板51上设置蜂窝状的散热孔6。这样，多层散热板51之间的局部空气或热量经蜂窝状的散热孔6相互连通，通风效果更好，散热效果也更好。
在进一步的实施例中，所述LED灯条4的散热面与所述后壳5的边缘部分相连。拓展了LCD侧向背光内主发热体LED灯条4的散热面积，使作为发热体的LED灯条4能够更好的散热。所述后壳5(即多个散热板51)的其他部分，可以装设在前框中，可以暴露于外界(即暴露于空气中)，优选的实施例中，所述后壳5的其余部分暴露于外界。这样，使热量可以通过该暴露于外界部分的外壳5更容易被散发到空气中去。
综上，LCD侧向背光内的主发热体LED灯条4产生的热量经后壳5中的金属散热板间相互传导与扩散，有效地解决了主发热体LED灯条4的散热问题，防止主发热体LED灯条4内局部过热而导致LED灯条4甚至LCD侧向背光模组的损坏。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (4)

1.一种液晶显示屏，包括：前框(1)，所述前框(1)中装设有液晶面板(2)、导光板(3)、LED灯条(4)和后壳(5)，所述导光板(3)平行于所述液晶面板(2)，且位于所述液晶面板(2)的里侧，所述LED灯条(4)位于所述导光板(3)的两端，所述后壳(5)位于所述导光板(3)的后侧面，其特征在于，所述后壳(5)为至少包括两层金属散热板(51)，所述每层散热板(51)之间平行设置具有间隙，所述散热板(51)与所述液晶面板(2)平行。
2.如权利要求1所述液晶显示屏，其特征在于，所述散热板(51)上设置有蜂窝状的散热孔(6)。
3.如权利要求1所述液晶显示屏，其特征在于，所述LED灯条(4)的散热面与所述后壳(5)的边缘部分相连。
4.如权利要求3所述液晶显示屏，其特征在于，所述后壳(5)的其余部分暴露于外界。
CN2010101847464A 2010-05-27 2010-05-27 一种液晶显示屏 Pending CN102262309A (zh)

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CN2010101847464A CN102262309A (zh) 2010-05-27 2010-05-27 一种液晶显示屏
PCT/CN2010/074118 WO2011147108A1 (zh) 2010-05-27 2010-06-21 一种液晶显示屏
US13/806,396 US9217820B2 (en) 2010-05-27 2011-06-21 Display apparatus

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CN105030189A (zh) * 2015-06-24 2015-11-11 张丛霖 一种新型多功能眼科装置
CN105974630A (zh) * 2016-07-14 2016-09-28 河北均显光科科技有限公司 一种阵列式显示装置

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CN204028512U (zh) * 2014-06-30 2014-12-17 北京京东方专用显示科技有限公司 显示装置
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CN104965617B (zh) * 2015-06-30 2018-11-02 上海天马微电子有限公司 触控显示面板
GB2545199A (en) * 2015-12-08 2017-06-14 Esc Digital Media Ltd Video display apparatus
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JP2018049233A (ja) * 2016-09-23 2018-03-29 パナソニック液晶ディスプレイ株式会社 液晶表示装置
CN107517396A (zh) * 2017-08-15 2017-12-26 深圳Tcl新技术有限公司 电视机、电视机的显示器调色方法以及显示器

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