CN108680988A - 一种侧入式导光板及其制备与应用 - Google Patents

一种侧入式导光板及其制备与应用 Download PDF

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CN108680988A
CN108680988A CN201810726320.3A CN201810726320A CN108680988A CN 108680988 A CN108680988 A CN 108680988A CN 201810726320 A CN201810726320 A CN 201810726320A CN 108680988 A CN108680988 A CN 108680988A
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plate
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CN108680988B (zh
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杨为新
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Chongqing Yiguangyuan Photoelectric Technology Co ltd
Suzhou Yeahlight Photoelectric Technology Co.,Ltd.
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Suzhou Billion Light Source Photoelectric Technology Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0041Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0065Manufacturing aspects; Material aspects
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
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  • Manufacturing & Machinery (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

本发明提出了一种侧入式导光板及其制备与应用,该导光板内设有多个折流式交错设置的透光板,所述透光板上下对称设有多个反光条,所述导光板底面设有若干条形槽,所述透光板上下表面分布有若干网点,导光板采用注塑成型,所述导光板、透光板均采用PMMA或PC材质,所述透光板透光率大于94.5%,本发明通过合理的结构设计和制备工艺参数调整,制得的导光板结构均匀性好、稳定度强,具有优良的内反射、折射效果,出光面光线分布均匀,透光辉度好。

Description

一种侧入式导光板及其制备与应用
技术领域
本发明涉及侧入式导光板技术领域,具体涉及一种侧入式导光板及其制备与应用。
背景技术
液晶显示装置(LCD)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。液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分子,两片玻璃基板中间有许多垂直和水平的细小电线,通过通电与否来控制液晶分子改变方向,将背光模组的光线折射出来产生画面。由于液晶面板本身不发光,需要借由背光模组提供的光源来正常显示影像,因此,背光模组成为液晶显示装置的关键零组件之一。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或LED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,再经由光学膜片组,以形成面光源提供给液晶显示面板。
导光板主要功能在于将背光源入射光,导向LCD液晶显示屏,用于展现背光源和显示屏的亮度,同时有透光的辉度和透光均匀度的要求。光从背光源射出,在导光板里面进行传播,并在网点面发生折射、反射和全发射,部分光被导光板吸收,余下的光穿过导光板,入射到液晶材料,通过控制电路以实现液晶显示,但现有的导光板光线折射、反射均匀度低,出光面透光辉度差,极大的影响了液晶显示的质量把控。
发明内容
针对上述存在的问题,本发明提出了一种侧入式导光板及其制备与应用,通过合理的结构设计和制备工艺参数调整,制得的导光板结构均匀性好、稳定度强,具有优良的内反射、折射效果,出光面光线分布均匀,透光辉度好。
为了实现上述的目的,本发明采用以下的技术方案:
一种侧入式导光板,导光板内设有多个折流式交错设置的透光板,透光板上下对称设有多个反光条,导光板底面设有若干条形槽,透光板上下表面分布有若干网点。
优选的,导光板、透光板采用注塑成型,导光板采用PMMA材质,透光板采用PC材质,透光板透光率大于94%。
优选的,透光板至少设有1个,每个透光板上至少设有8个反光条,反光条截面为三角形设置。
优选的,条形槽纵截面为“U”型设置,条形槽上也密布有网点设置。
优选的,侧入式导光板,制备方法为:提供导光板注射模具,根据需要将多个透光板至于模具内预先设定好的位置,然后进行预热,再将液体状的导光板原料注射进注射模具内,冷却成型,即得内置透光板的导光板。
优选的,预热为45-60℃,时间为30min,注射温度为190-200℃,注射压力为160-170MPa。
优选的,侧入式导光板在侧入式背光模组中的应用,包括侧入式导光板、侧反光片、LED光源、主反光片、扩散片,两侧侧反光片为对称的“<”折线型结构。
反光条、侧反光片、主反光片上可设置反光油墨层。
由于采用上述的技术方案,本发明的有益效果是:本发明通过合理的结构设计和制备工艺参数调整,制得的导光板结构均匀性好、稳定度强,具有优良的内反射、折射效果,出光面光线分布均匀,透光辉度好。
本发明相较于常规导光板上设置网点,转换成将导光板内置透光板,并分布网点,同时将导光板地侧面设置带有网点的条形槽,有效提高了导光板内部的光线反射和折射。同时透光板上设有多个反光条,对于内部折射、反射、散射产生的光线具有良好的汇集效果,减弱了光源的消耗,有利于光线的均匀分散与传递。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述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他的附图。
图1为本发明结构示意图;
图2为本发明另一种结构示意图;
图3为本发明透光板俯视图;
图中:1侧入式导光板、2透光板、3侧反光片、4LED光源、5主反光片、6扩散片。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述。基于本发明的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
一种侧入式导光板,如图1-3所示,导光板内设有多个折流式交错设置的透光板,透光板上下对称设有多个反光条,导光板底面设有若干条形槽,透光板上下表面分布有若干网点。
优选的,导光板、透光板采用注塑成型,导光板采用PMMA材质,透光板采用PC材质,透光板透光率大于94%。
优选的,透光板至少设有1个,每个透光板上至少设有8个反光条,反光条截面为三角形设置(三角形顶角根据需要设置,即反射面倾角可根据需要调节,透光板(包括反光条)可同样采用注射成型)。
优选的,条形槽纵截面为“U”型设置,条形槽上也密布有网点设置。
优选的,侧入式导光板制备方法为:提供导光板注射模具,根据需要将多个透光板至于模具内预先设定好的位置,然后进行预热,再将液体状的导光板原料注射进注射模具内,冷却成型,即得内置透光板的导光板。
优选的,预热为60-90℃,时间为30min,注射温度为200-300℃,注射压力为145-170MPa。
优选的,侧入式导光板在侧入式背光模组中的应用,包括侧入式导光板、侧反光片、LED光源、主反光片、扩散片,两侧侧反光片为对称的“<”折线型结构。
实施例1:
一种侧入式导光板,导光板内设有1个透光板,透光板一侧与透光板内壁固连(注射时一体成型),透光板上下对称设有8个反光条,上下各4个,导光板底面设有若干条形槽,透光板上下表面分布有若干网点(图1)。
其中,导光板、透光板采用注塑成型,导光板采用PMMA材质,透光板采用PC材质,透光板透光率为94.7%。条形槽纵截面为“U”型设置,条形槽上也密布有网点设置。
侧入式导光板,制备方法为:提供导光板注射模具,将预先注射成型的1个透光板(包括反光条)至于模具内预先设定好的位置,然后进行预热,预热为50℃,时间为30min,再将液体状的导光板原料注射进注射模具内,注射温度为190℃,注射压力为165MPa,冷却成型,即得内置透光板的导光板。将制得的导光板用于侧入式背光模组中,包括侧入式导光板、侧反光片、LED光源、主反光片、扩散片,两侧侧反光片为对称的“<”折线型结构。
实施例2:
一种侧入式导光板,导光板内设有2个透光板,透光板一侧与透光板内壁固连(注射时一体成型),每个透光板上下对称设有8个反光条,上下各4个,导光板底面设有若干条形槽,透光板上下表面分布有若干网点(图2)。
其中,导光板、透光板采用注塑成型,导光板采用PMMA材质,透光板采用PC材质,透光板透光率为94.3%。条形槽纵截面为“U”型设置,条形槽上也密布有网点设置。
侧入式导光板,制备方法为:提供导光板注射模具,将预先注射成型的2个透光板(包括反光条)至于模具内预先设定好的位置,然后进行预热,预热为60℃,时间为30min,再将液体状的导光板原料注射进注射模具内,注射温度为195℃,注射压力为170MPa,冷却成型,即得内置透光板的导光板。将制得的导光板用于侧入式背光模组中,包括侧入式导光板、侧反光片、LED光源、主反光片、扩散片,两侧侧反光片为对称的“<”折线型结构。
本发明通过合理的结构设计和制备工艺参数调整,制得的导光板结构均匀性好、稳定度强,具有优良的内反射、折射效果,出光面光线分布均匀,透光辉度好。相较于常规导光板上设置网点,转换成将导光板内置透光板,并分布网点,同时将导光板地侧面设置带有网点的条形槽,有效提高了导光板内部的光线反射和折射。同时透光板上设有多个反光条,对于内部折射、反射、散射产生的光线具有良好的汇集效果,减弱了光源的消耗,有利于光线的均匀分散与传递。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
在本说明书的描述中,参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。

Claims (7)

1.一种侧入式导光板,其特征在于:所述导光板内设有多个折流式交错设置的透光板,所述透光板上下对称设有多个反光条,所述导光板底面设有若干条形槽,所述透光板上下表面分布有若干网点。
2.根据权利要求1所述的侧入式导光板,其特征在于:所述导光板、透光板采用注塑成型,所述导光板采用PMMA材质,透光板采用PC材质,所述透光板透光率大于94%。
3.根据权利要求1所述的侧入式导光板,其特征在于:所述透光板至少设有1个,每个所述透光板上至少设有8个反光条,所述反光条截面为三角形设置。
4.根据权利要求1所述的侧入式导光板,其特征在于:所述条形槽纵截面为“U”型设置,所述条形槽上也密布有网点设置。
5.根据权利要求1所述的侧入式导光板,其特征在于,制备方法为:提供导光板注射模具,根据需要将多个透光板至于模具内预先设定好的位置,然后进行预热,再将液体状的导光板原料注射进注射模具内,冷却成型,即得内置透光板的导光板。
6.根据权利要求5所述的侧入式导光板,其特征在于:所述预热为45-60℃,时间为30min,注射温度为190-200℃,注射压力为160-170MPa。
7.根据权利要求1-6任一项所述的侧入式导光板在侧入式背光模组中的应用,其特征在于:包括侧入式导光板、侧反光片、LED光源、主反光片、扩散片,两侧所述侧反光片为对称的“<”折线型结构。
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