CN108181762B - 液晶显示器及其背光模组 - Google Patents

液晶显示器及其背光模组 Download PDF

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CN108181762B
CN108181762B CN201711467193.1A CN201711467193A CN108181762B CN 108181762 B CN108181762 B CN 108181762B CN 201711467193 A CN201711467193 A CN 201711467193A CN 108181762 B CN108181762 B CN 108181762B
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guide plate
light guide
backlight
circuit board
accommodating part
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CN108181762A (zh
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李晓玲
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/752,739 priority patent/US10684410B2/en
Priority to PCT/CN2018/073506 priority patent/WO2019127762A1/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
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    • 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 
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    • 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
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    • 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
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    • 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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    • 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
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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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    • G02F1/00—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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Abstract

本发明提供一种液晶显示器及其背光模组，所述背光模组包括背光源、导光板，所述背光源设于所述导光板的侧面，所述导光板上设置有用于容纳功能模块的收容部，所述背光模组还包括设于所述导光板上的补偿光源，所述收容部位于所述背光源与所述补偿光源之间。本发明提出的背光模组包括补偿光源，所述背光源与所述补偿光源位于收容部相对的两侧，通过补偿光源可以对导光板中被功能模块遮挡部分的光线进行补偿，从而解决了因功能模块挡住背光源的光线造成的显示不均匀的问题，提升了液晶显示器的显示品质。

Description

液晶显示器及其背光模组
技术领域
本发明涉及液晶显示技术领域，尤其涉及一种液晶显示器及其背光模组。
背景技术
目前，液晶显示装置作为电子设备的显示部件已经广泛的应用于各种电子产品中，由于液晶本身不能发光，液晶显示装置需要背光模组来为其提供光源，因此，背光模组是液晶显示装置中一个不可缺少的部件。常见的背光模组主要包括反射片、导光板、光学膜片组、背光源等部件。
随着科学技术的发展，功能模块与触控一体化技术应用而生，这些功能模块包括指纹模块、传感模块等，以指纹模块为例，指纹识别与触控一体化技术(InvisibleFingerprint Sensor、IFS)是将指纹识别模组直接贴合在触控屏玻璃面板下方，无需在手机正面或背面挖通孔，实现前屏面板‘一体化’的外观设计，不仅具有触控功能，而且还能起到防水防尘的效果。相对于传统的指纹识别技术，IFS技术中指纹传感器直接穿过玻璃盖板和显示屏感应指纹信息。在此基础上，人们提出在背光模组的导光板、反射片、光学膜片组对应指纹传感器的位置开孔，以便传导指纹信息。但是，这种结构的背光模组中功能模块会挡住背光源发出的光线而导致导光板后面的区域变暗，从而造成液晶显示装置画面显示不均匀。
发明内容
为了解决现有技术的不足，本发明提供一种液晶显示器及其背光模组，能够解决因功能模块挡住背光源的光线造成的显示不均匀的问题。
本发明提出的具体技术方案为：提供一种背光模组，所述背光模组包括背光源、导光板，所述背光源设于所述导光板的侧面，所述导光板上设置有用于容纳功能模块的收容部，所述背光模组还包括设于所述导光板上的补偿光源，所述收容部位于所述背光源与所述补偿光源之间。
进一步地，所述补偿光源包括柔性电路板及设于所述柔性电路板上的LED灯，所述导光板上开设有用于容纳所述LED灯的安装部，所述柔性电路板抵接于所述导光板的底面。
进一步地，所述柔性电路板朝向所述收容部的一侧与所述收容部的边缘重合。
进一步地，所述收容部位于所述导光板靠近所述背光源的一端，所述收容部为通孔，所述安装部为凹槽，所述安装部位于所述收容部的边缘并与所述收容部连通。
进一步地，所述柔性电路板呈板状，所述LED灯的数量为一个，所述柔性电路板朝向所述收容部的一侧为弧形。
进一步地，所述柔性电路板呈环状，所述LED灯的数量为多个，多个所述LED灯沿所述柔性电路板的边缘呈弧形设置。
进一步地，多个所述LED灯中相邻两个LED灯的间隔相等。
进一步地，所述背光模组还包括反射片和光学膜片组，所述反射片位于所述导光板的底部，所述光学膜片组设于所述导光板的顶部。
本发明还提供了一种液晶显示器，所述液晶显示器包括功能模块和背光模组，所述背光模组包括背光源、导光板，所述背光源设于所述导光板的侧面，所述导光板靠近所述背光源的一端设置有收容部，所述功能模块容纳与所述收容部中，所述背光模组还包括设于所述导光板上的补偿光源，所述收容部位于所述背光源与所述补偿光源之间。
进一步地，所述补偿光源包括柔性电路板及设于所述柔性电路板上的LED灯，所述导光板上开设有用于容纳所述LED灯的安装部，所述柔性电路板抵接于所述导光板的底面，所述功能模块包括指纹模块和保护盖，所述指纹模块收容于所述收容部中，所述保护盖抵接于所述柔性电路板的底部。
本发明提出的背光模组包括补偿光源，所述背光源与所述补偿光源位于收容部相对的两侧，通过补偿光源可以对导光板中被功能模块遮挡部分的光线进行补偿，从而解决了因功能模块挡住背光源的光线造成的显示不均匀的问题，提升了液晶显示器的显示品质。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
图1为液晶显示器的结构示意图；
图2为补偿光源的结构示意图；
图3为背光源、导光板以及补偿光源组装后的结构示意图；
图4为导光板的结构示意图；
图5为补偿光源的另一结构示意图；
图6为背光源、导光板以及补偿光源组装后的另一结构示意图；
图7为补偿光源的又一结构示意图；
图8为背光源、导光板以及补偿光源组装后的又一结构示意图；
图9为功能模块、背光源、导光板以及补偿光源组装后的后视图；
图10为功能模块、背光源、导光板以及补偿光源组装后的主视图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。在附图中，相同的标号将始终被用于表示相同的元件。
参照图1～4，本实施例中的液晶显示器包括背光模组1和显示模组2，背光模组1用于为显示模组2提供光源。背光模组1包括背光源11、导光板12背光源11设于导光板12的侧面，导光板12设置有用于容纳功能模块3的收容部120，背光模组1还包括设于导光板12上的补偿光源14，收容部120位于背光源11与补偿光源14之间。
本实施例中的背光模组1为侧入式，背光源11与导光板12的入光面相对设置。背光源11发出的光线从入光面进入导光板12中并在导光板12中经过多次反射后从导光板12的出光面射出。这里，当功能模块3装设于收容部120中后定义收容部120朝向背光源11的一面为功能模块3的正面，收容部120背离背光源11的一面为功能模块3的背面。通过在功能模块3的背面所对应的区域装设补偿光源14，从而可以避免因功能模块3挡住背光源11的光线造成的显示不均匀的问题。
本实施例中的功能模块3可以为指纹模块、传感模块以及其他实现除背光功能以外的功能模块，传感模块包括人脸识别传感器、温度传感器、光传感器等，当然，本实施例中导光板12上可以设置多个收容部120，用于容纳不同的功能模块3，每一个功能模块3对应一个补偿光源14，通过多个补偿光源14来分别对背光源11的光线进行补偿。
本实施例中收容部120位于导光板12靠近背光源11的一端，当然，收容部120也可以设置在导光板12的其他位置，可以根据用户对不同的功能模块的使用习惯来将收容部120设置在导光板12的不同的位置，例如，功能模块3为指纹模块时，在用户单手操作时，为了便于手指与指纹模块接触，指纹模块对应的收容部120设置在导光板12靠近背光源11的一端，又例如，功能模块3为人脸识别传感器时，将收容部120设置在导光板12与整个显示界面的中心对应的位置时，可以更容易对人脸进行捕捉。
下面以功能模块3为指纹模块为例来对本实施例的背光模组进行详细的描述，这里仅仅是作为示例示出，不做限定。
本实施例中的背光源11包括PCB板111和设于PCB板111上的多个LED灯112，多个LED灯112沿分别与导光板12的入光面和出光面平行的方向呈直线排列，PCB板位于导光板12的顶部即位于导光板12的出光面上。
补偿光源14包括柔性电路板141及设于柔性电路板141上的LED灯142，导光板12上开设有用于容纳LED灯142的安装部121，柔性电路板141抵接于导光板12的底面。较佳地，LED灯142与被指纹模块3遮挡的背光源11中的LED灯112正对设置，这样便可以对被遮挡的LED灯112进行补偿。
收容部120位于导光板12的中间，收容部120与导光板12的入光面之间的距离可以根据实际需要设定，安装部121与收容部120的距离越小越好，这样补偿光源14中的LED灯142发出的光线能够在导光板12更好的进行传导，使得从导光板12的出光面出射的光线更均匀。
柔性电路板141朝向收容部120的一侧与收容部120的边缘重合，例如，收容部120的形状为方形，则柔性电路板141朝向收容部120的一侧为直线，收容部120的形状为圆形，则柔性电路板141朝向收容部120的一侧为弧形且弧度与圆形一致。
本实施例中的收容部120为贯穿导光板12的通孔，安装部121为凹槽，安装部121位于收容部120的边缘并与收容部120连通，柔性电路板141呈板状，柔性电路板141靠近收容部120的一侧为弧形，这样，在安装过程中，LED灯142卡设于安装部121中，柔性电路板141的弧形的边缘与收容部120边缘对应，从而可以避免柔性电路板141位于收容部120内的部分对指纹模块3的安装造成影响。柔性电路板141呈板状时，LED灯142的数量为一个，其与被指纹模块3遮挡的背光源11中的LED灯112正对。
参照图5、图6，为了能够更好的对背光源11进行光线补偿，LED灯142的数量也可以为多个，LED灯142沿柔性电路板141的边缘呈弧形设置，多个LED灯142中相邻两个LED灯142的间隔相等。
参照图7～10，本实施示例中的柔性电路板141也可以呈环状，环状的柔性电路板141与导光板12的接触面积更大，在实际组装过程中，柔性电路板141与导光板12接触的地方通过胶水进行粘贴，从而接触面积越大，柔性电路板141粘贴越牢固。柔性电路板141为环形，可设置的LED灯142的数量也越多，多个LED灯142沿柔性电路板141的边缘呈弧形设置，多个LED灯142中相邻两个LED灯142的间隔相等，这样可以使得补偿光源14发出的光线更加均匀。
背光模组1还包括反射片15和光学膜片组13，反射片15位于导光板12的底部，光学膜片组13设于导光板12的顶部，光学膜片组13与导光板12的出光面相对设置。反射片15用于将入射到导光板12的底部的光线反射至导光板12中。
再次参照图1、图9及图10，本实施例中的指纹模块3包括指纹件31和保护盖32，指纹件31收容于收容部120中，保护盖32抵接于柔性电路板141的底部。保护盖32的直径大于柔性电路板141的内径，这样，保护盖32的边缘抵接于柔性电路板141的表面，在安装过程中，将保护盖32覆盖于柔性电路板141的表面的部分与柔性电路板141进行粘接并可以对指纹模块3进行固定。
指纹件31的直径小于收容部120的直径，这样，指纹件31在容纳于收容部120中时不会与位于收容部120的边缘的LED灯142接触，避免LED灯142在工作过程中产生大量热传导至指纹件31上而影响指纹件31的性能。
本实施例中的光学膜片组13、反射片15与指纹模块3对应的地方也开设有通孔，用于容纳指纹模块3。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (7)

1.一种背光模组，其特征在于，包括背光源、导光板，所述背光源设于所述导光板的侧面，所述导光板上设置有用于容纳功能模块的收容部，所述收容部贯穿所述导光板的相对的两面，所述相对的两面分别与所述侧面连接，所述背光模组还包括设于所述导光板上的补偿光源，所述收容部位于所述背光源与所述补偿光源之间；所述补偿光源包括柔性电路板及设于所述柔性电路板上的LED灯，所述导光板上开设有用于容纳所述LED灯的安装部，所述柔性电路板抵接于所述导光板的底面；所述柔性电路板朝向所述收容部的一侧与所述收容部边缘重合；所述收容部位于所述导光板靠近所述背光源的一端，所述收容部为通孔，所述安装部为凹槽，所述安装部位于所述收容部的边缘并与所述收容部连通。
2.根据权利要求1所述的背光模组，其特征在于，所述柔性电路板呈板状，所述LED灯的数量为一个，所述柔性电路板朝向所述收容部的一侧为弧形。
3.根据权利要求1所述的背光模组，其特征在于，所述柔性电路板呈环状，所述LED灯的数量为多个，多个所述LED灯沿所述柔性电路板的边缘呈弧形设置。
4.根据权利要求3所述的背光模组，其特征在于，多个所述LED灯中相邻两个LED灯的间隔相等。
5.根据权利要求1所述的背光模组，其特征在于，还包括反射片和光学膜片组，所述反射片位于所述导光板的底部，所述光学膜片组设于所述导光板的顶部。
6.一种液晶显示器，其特征在于，包括功能模块和背光模组，所述背光模组包括背光源、导光板，所述背光源设于所述导光板的侧面，所述导光板靠近所述背光源的一端设置有收容部，所述收容部贯穿所述导光板的相对的两面，所述相对的两面分别与所述侧面连接，所述功能模块容纳于所述收容部中，所述背光模组还包括设于所述导光板上的补偿光源，所述收容部位于所述背光源与所述补偿光源之间，所述补偿光源包括柔性电路板及设于所述柔性电路板上的LED灯，所述导光板上开设有用于容纳所述LED灯的安装部，所述柔性电路板抵接于所述导光板的底面；所述柔性电路板朝向所述收容部的一侧与所述收容部边缘重合；所述收容部位于所述导光板靠近所述背光源的一端，所述收容部为通孔，所述安装部为凹槽，所述安装部位于所述收容部的边缘并与所述收容部连通。
7.根据权利要求6所述的液晶显示器，其特征在于，所述功能模块包括指纹模块和保护盖，所述指纹模块收容于所述收容部中，所述保护盖抵接于所述柔性电路板的底部。
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