CN108107501A - 一种凸字型激光液晶显示器导光板 - Google Patents

一种凸字型激光液晶显示器导光板 Download PDF

Info

Publication number
CN108107501A
CN108107501A CN201711274414.3A CN201711274414A CN108107501A CN 108107501 A CN108107501 A CN 108107501A CN 201711274414 A CN201711274414 A CN 201711274414A CN 108107501 A CN108107501 A CN 108107501A
Authority
CN
China
Prior art keywords
laser
light guide
guide plate
liquid crystal
bulge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711274414.3A
Other languages
English (en)
Inventor
许江珂
许江临
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201711274414.3A priority Critical patent/CN108107501A/zh
Publication of CN108107501A publication Critical patent/CN108107501A/zh
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means 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
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means 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
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Abstract

本发明公开了一种凸字型激光液晶显示器导光板，该导光板由水平基板和水平基板表面的凸起结构组成的一体化结构，所述凸起结构的表面积小于所在表面的表面积，可见光激光器发出的激光由凸起结构的侧面入射到导光板中。能够实现超薄、超窄边框的激光液晶显示器背光源结构，本发明能够同时解决激光器作为液晶显示器背光源所面临的整机厚度大、无法实现窄边框设计、画面散斑干扰、匀场问题、混色问题和散热问题。

Description

一种凸字型激光液晶显示器导光板
技术领域
本发明涉及激光液晶显示器中的导光板，具体涉及一种凸字型结构的导光板，属于激光显示技术领域。
背景技术
激光显示是一种新型显示技术，使用光谱线宽极窄、光谱亮度极高的激光作为显示器的照明光源，具有色饱和度高、色域覆盖大、色对比度高、色彩还原性好的特点。但是使用激光作为液晶显示器照明光源存在以下技术难点：
1、难以实现整机厚度薄及窄边框设计，不符合当前人们对家电的审美需求：激光器不论是半导体发光机制还是全固态发光机制，其体积均远远大于LED发光器件。因此，激光液晶显示器使用传统光学结构无法实现LED液晶显示器同样的窄边框及超薄整机设计。
2、画面散斑干扰：激光由于光谱线宽窄，因此存在相干效应。当激光用于显示器照明光源时，会在显示画面上出现耀眼的颗粒状斑点，技术上称为画面散斑。激光画面散斑严重影响使用者的观看感受及视力。
3、匀场问题：激光液晶显示器使用多个激光器作为背光源时，会造成画面激光能量分布不均的现象，画面呈现出明暗斑块，造成显示画面清晰度对比度严重下降，直接影响观看感受。
4、混色问题：真正的激光显示是使用多基色激光作为混合后的白光作为显示器照明光源，而不是使用蓝色激光激发荧光粉产生白光。故，多基色激光混合不完全会造成画面色差大、对比度下降，严重影响用户体验。
5、激光器散热不利会导致使用寿命下降：目前，激光器的发光效率低于LED发光效率，故激光器对于散热的要求也远高于LED。因此，激光使用现有的LED液晶显示器的散热系统会造成散热不良，激光器使用寿命下降。而能够满足激光器散热要求的散热系统又面临着体积大，无法安装于窄边框超薄液晶显示器中。因此，与现有的超薄窄边框LED液晶显示器相比，激光超薄窄边框液晶显示器需解决以上五个技术难题。
发明内容
有鉴于此，本发明提供了一种凸字型激光液晶显示器导光板，能够实现超薄、超窄边框的激光液晶显示器背光源结构，能够同时解决激光器作为液晶显示器背光源所面临的：整机厚度大、无法实现窄边框设计、画面散斑干扰、匀场问题、混色问题、散热问题。
一种凸字型激光液晶显示器导光板，该导光板由水平基板和水平基板表面的凸起结构组成的一体化结构，所述凸起结构的表面积小于所在表面的表面积，外部的可见光激光器发出的激光由凸起结构的侧面入射到导光板中。
进一步地，所述导光板使用折射率大于1的透光材料制成，所述水平基板的表面和凸起结构的表面存在散射区；导光板的所有侧边涂覆、附着或包裹反光材料，反光材料上存在有透射激光的通光孔。
进一步地，所述散射区使用激光打点法、印刷涂料法、模具注塑法或打磨毛化法制造。
进一步地，所述凸起结构的形状为方形、多边形或圆形。
进一步地，所述凸起结构为多层凸起。
进一步地，所述水平基板上的凸起结构为两个以上。
进一步地，所述凸起结构的宽度或长度与水平基板的宽度或长度相等。
进一步地，所述导光板的透光面具有光栅结构。
进一步地，作为凸字型导光板的照明光源采用可见光激光器与LED共同构成的混合光源。
有益效果：
与已有的技术方案相比，本发明在导光板上设置一体化凸起结构，将可见光激光器发出的激光由传统的导光板的侧边入射改为由凸起结构的侧面入射到导光板中，解决了激光器体积过大无法实现激光液晶显示器超薄窄边框设计的现实问题，能够有效的减小背光源厚度，实现超薄设计。同时，还能解决激光液晶显示器面临的画面散斑问题、散热问题、匀场问题、合色问题，对于激光显示技术的产业化实用化具有重大意义。
附图说明
图1为本发明的结构示意图；
图2为本发明的入射光路示意图；
图3为本发明位于背光源中的结构示意图；
图4为本发明的异型凸字型导光板示意图；
图5为多层导光板的结构示意图；
图6-8为本发明导光板的变形结构；
图9为本发明导光板光栅结构示意图。
其中，1-水平基板、11-凸起结构、12-散射区、13-光栅结构、2-可见光激光器、3-反光膜、4-棱镜膜、5-偏光膜、6-匀光膜、7-铝制散热结构件。
具体实施方式
下面结合附图并举实施例，对本发明进行详细描述。
实施例1
如附图1所示，本发明提供了一种凸字型激光液晶显示器导光板，导光板由长方形的水平基板1和凸起结构11组成，导光板由聚甲基丙烯酸甲酯(PMMA)使用注塑工艺制成，其中水平基板1长度为960mm，宽度为470mm，厚度为2mm，凸起结构11的长度为480mm，宽度为240mm，厚度为6mm。
在凸起结构11的表面存在散射区12，水平基板1与凸起结构11同侧的表面也存在散射区12，散射区12使用激光打点法、印刷涂料法、模具注塑法、打磨毛化法制造。
本实施例中，凸字型导光板1的制做材料为还可为聚苯乙烯(PS)、聚碳酸脂(PC)、苯乙烯和丙烯酸脂的共聚物(NAS)、烯丙基二甘醇碳酸脂(ADC或CR-39)、苯乙烯丙烯腈常缩SAN、苯乙烯-甲基丙烯酸甲酯共聚物(MS)、聚4-甲基-1-戊烯TPX、透明聚酰胺。
本实施例中，可见光激光器2的激光由导光板中的凸起结构11的四个侧面入射(为了光路图清晰表示，图中省略其他可见光激光器2)，激光经过凸起结构11上的通光孔(图中省略)进入水平基板1后经过全反射及水平基板1的侧边反射最终照射到散射区12上形成散射。
本发明的导光板应用于激光液晶显示器背光源结构中，由凸字型导光板1，可见光激光器2，反光膜3，匀光膜4、偏光膜5、棱镜膜6，铝制散热结构件7组成。其中可见光激光器2为波长为405～470nm的蓝光半导体激光器(蓝光LED)，510～550nm绿光全固态激光器，620～690nm红光半导体激光器组成发光条，可见光激光器2组成的发光条热沉与铝制散热结构件7连接形成热导通。可见光激光器2发出的激光束由通光孔入射到导光板内混合成白光。可见光激光在导光板中进行多次的反射(导光板的侧边)及全反射(导光板的上下表面)，经过导光板上的散射区12后产生空间360°散射。散射后的激光出射导光板，一部分散射激光经过棱镜膜4、偏光膜5、匀光膜6到达液晶显示屏；一部分散射激光经过反光膜3的反射后向棱镜膜4方向传播。
如附图4所示，本发明导光板的凸起结构可加工成不规则的异型结构。
如附图5所示，本发明导光板的凸起结构为多层，凸起结构表面的散射区12呈不等面积的排布，上述形式使得激光液晶显示器屏幕上每个点的能量及色彩均匀。
如附图6-8所示，凸起结构11可以为多个，或者凸起结构11的宽度或长度与水平基板1的宽度或长度相等。
如附图9所示，导光板的透光面具有光栅结构13。
综上所述，以上仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (9)

1.一种凸字型激光液晶显示器导光板，其特征在于，该导光板由水平基板和水平基板表面的凸起结构组成的一体化结构，所述凸起结构的表面积小于所在表面的表面积，外部的可见光激光器发出的激光由凸起结构的侧面入射到导光板中。
2.如权利要求1所述的凸字型激光液晶显示器导光板，其特征在于，所述导光板使用折射率大于1的透光材料制成，所述水平基板的表面和凸起结构的表面存在散射区；导光板的所有侧边涂覆、附着或包裹反光材料，反光材料上存在有透射激光的通光孔。
3.如权利要求1或2所述的凸字型激光液晶显示器导光板，其特征在于，所述散射区使用激光打点法、印刷涂料法、模具注塑法或打磨毛化法制造。
4.如权利要求3所述的凸字型激光液晶显示器导光板，其特征在于，所述凸起结构的形状为方形、多边形或圆形。
5.如权利要求4所述的凸字型激光液晶显示器导光板，其特征在于，所述凸起结构为多层凸起。
6.如权利要求1所述的凸字型激光液晶显示器导光板，其特征在于，所述水平基板上的凸起结构为两个以上。
7.如权利要求1所述的凸字型激光液晶显示器导光板，其特征在于，所述凸起结构的宽度或长度与水平基板的宽度或长度相等。
8.如权利要求1所述的凸字型激光液晶显示器导光板，其特征在于，所述导光板的透光面具有光栅结构。
9.如权利要求1所述的凸字型激光液晶显示器导光板，其特征在于，作为凸字型导光板的照明光源采用可见光激光器与LED共同构成的混合光源。
CN201711274414.3A 2017-12-06 2017-12-06 一种凸字型激光液晶显示器导光板 Pending CN108107501A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711274414.3A CN108107501A (zh) 2017-12-06 2017-12-06 一种凸字型激光液晶显示器导光板

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711274414.3A CN108107501A (zh) 2017-12-06 2017-12-06 一种凸字型激光液晶显示器导光板

Publications (1)

Publication Number Publication Date
CN108107501A true CN108107501A (zh) 2018-06-01

Family

ID=62208113

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711274414.3A Pending CN108107501A (zh) 2017-12-06 2017-12-06 一种凸字型激光液晶显示器导光板

Country Status (1)

Country Link
CN (1) CN108107501A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110261952A (zh) * 2019-08-02 2019-09-20 广州希恩朋克光电产品股份有限公司 一种导光板及其制备方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1172626A (ja) * 1997-06-30 1999-03-16 Toshiba Lighting & Technol Corp バックライト及びこれを用いた液晶表示装置
CN102047174A (zh) * 2008-05-27 2011-05-04 Lg电子株式会社 Led背光单元以及使用该led背光单元的液晶显示装置
CN202204951U (zh) * 2011-09-09 2012-04-25 北京京东方光电科技有限公司 一种导光板、背光源及液晶显示装置
CN202546521U (zh) * 2012-05-08 2012-11-21 京东方科技集团股份有限公司 一种背光源模块结构及液晶显示装置
CN105116618A (zh) * 2015-10-14 2015-12-02 京东方科技集团股份有限公司 背光模组和显示装置
CN105572792A (zh) * 2016-03-16 2016-05-11 福建鸿博光电科技有限公司 一种导光板
CN106324745A (zh) * 2015-07-01 2017-01-11 Lg电子株式会社 导光板以及具有该导光板的平面光源装置
CN106908991A (zh) * 2015-12-23 2017-06-30 乐金显示有限公司 液晶显示装置
CN107085260A (zh) * 2017-06-23 2017-08-22 北京小米移动软件有限公司 侧入式led灯的背光结构及led灯
CN207704064U (zh) * 2017-12-06 2018-08-07 许江珂 一种凸字型激光液晶显示器导光板

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1172626A (ja) * 1997-06-30 1999-03-16 Toshiba Lighting & Technol Corp バックライト及びこれを用いた液晶表示装置
CN102047174A (zh) * 2008-05-27 2011-05-04 Lg电子株式会社 Led背光单元以及使用该led背光单元的液晶显示装置
CN202204951U (zh) * 2011-09-09 2012-04-25 北京京东方光电科技有限公司 一种导光板、背光源及液晶显示装置
CN202546521U (zh) * 2012-05-08 2012-11-21 京东方科技集团股份有限公司 一种背光源模块结构及液晶显示装置
CN106324745A (zh) * 2015-07-01 2017-01-11 Lg电子株式会社 导光板以及具有该导光板的平面光源装置
CN105116618A (zh) * 2015-10-14 2015-12-02 京东方科技集团股份有限公司 背光模组和显示装置
CN106908991A (zh) * 2015-12-23 2017-06-30 乐金显示有限公司 液晶显示装置
CN105572792A (zh) * 2016-03-16 2016-05-11 福建鸿博光电科技有限公司 一种导光板
CN107085260A (zh) * 2017-06-23 2017-08-22 北京小米移动软件有限公司 侧入式led灯的背光结构及led灯
CN207704064U (zh) * 2017-12-06 2018-08-07 许江珂 一种凸字型激光液晶显示器导光板

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110261952A (zh) * 2019-08-02 2019-09-20 广州希恩朋克光电产品股份有限公司 一种导光板及其制备方法

Similar Documents

Publication Publication Date Title
TWI422922B (zh) A planar lighting device, and a liquid crystal display device provided with the same
JP5384347B2 (ja) 照明システム、照明器具および表示デバイス
US8089583B2 (en) Light guide blade with color balancing structures and blue absorption compensation for large screen LED backlight unit
US20070110386A1 (en) Device having combined diffusing, collimating, and color mixing light control function
TW202037981A (zh) 發光二極體背光模組
JP6329107B2 (ja) 液晶表示装置用色純度向上フィルム及びこれを含む液晶表示装置
TW201248081A (en) Light source device and display
JP2000155315A (ja) フロントライト及び反射型液晶表示装置
CA2426940A1 (en) Optical system with reduced color shift
KR20120067550A (ko) 백라이트 유닛 및 그를 이용한 액정표시장치
CN105938271A (zh) 一种投射型全息光栅背光结构
CN101144582A (zh) 发光二极管背光模块
KR101740194B1 (ko) 표시 패널 유닛 및 표시 장치
KR102090457B1 (ko) 액정표시장치
JPWO2005091060A1 (ja) 液晶表示パネルおよび液晶表示装置
CN103542276B (zh) 反射式显示面板实现均匀前光光源的方法
CN107249051B (zh) 一种移动终端
CN107561628A (zh) 显示装置、背光模组及其导光板
CN207704064U (zh) 一种凸字型激光液晶显示器导光板
US20110050127A1 (en) Lighting device
JP2001167625A (ja) 面光源装置及び液晶表示装置
CN108107501A (zh) 一种凸字型激光液晶显示器导光板
JP2004163806A (ja) スクリーン及びその製造方法並びに光学膜
CN101706044A (zh) Led背光模块
CN108073000A (zh) 背光模组和液晶显示器

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180601