CN107505794A - 一种显示装置及背光源 - Google Patents
一种显示装置及背光源 Download PDFInfo
- Publication number
- CN107505794A CN107505794A CN201710898189.4A CN201710898189A CN107505794A CN 107505794 A CN107505794 A CN 107505794A CN 201710898189 A CN201710898189 A CN 201710898189A CN 107505794 A CN107505794 A CN 107505794A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- display device
- exiting surface
- liquid crystal
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- 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
-
- 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
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough 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
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened 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
- G02B6/005—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
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- 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
- G02B6/009—Positioning aspects of the light source 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/1343—Electrodes
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13793—Blue phases
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Planar Illumination Modules (AREA)
Abstract
本发明涉及显示技术领域,公开了一种显示装置及背光源,该显示装置包括:液晶面板和背光源,液晶面板包括相对设置的彩膜基板和阵列基板、设置于彩膜基板和阵列基板之间的蓝相液晶层,彩膜基板朝向阵列基板的一侧设有第一驱动电极,阵列基板朝向彩膜基板的一侧设有第二驱动电极;背光源包括:导光板;设于导光板出光面上的复合膜层,复合膜层包括多层介质膜层,且多层介质膜层沿远离导光板的出光面的方向折射率依次降低。上述显示装置中,蓝相液晶层的驱动电场为垂直于彩膜基板和阵列基板的垂直电场,可以有效降低蓝相液晶的驱动电压,且背光源出射较好的斜向光线进入显示面板,可以有效提高显示装置的开口率。
Description
技术领域
本发明涉及显示技术领域,特别涉及一种显示装置及背光源。
背景技术
蓝相液晶在不加电压时显示为各向同性,加电压时随着电场方向的诱导变化为各向异性,这种现象称之为蓝相液晶的科尔效应。蓝相液晶的这种性质决定了蓝相液晶显示器具有良好的暗态,不需要取向层,同时蓝相液晶具有亚毫秒响应速度等优点,所以被学术界一致认为是下一代液晶显示器,现有技术中的蓝相液晶显示器一般为横向驱动电压,驱动电压较高,蓝相液晶显示器的高驱动电压一直制约着蓝相液晶显示器的发展。常见的降低蓝相液晶驱动电压的方法是增加蓝相液晶的科尔常数或将电极施加在凸起电极上,但是目前蓝相液晶的科尔常数已经被提升到了13.7nm/V2了,驱动电压依然会在10V以上,而凸起方案工艺难度较大,且丧失显示器的开口率。所以在蓝相液晶显示屏的发展中,急需解决驱动电压较高且显示器开口率损失的问题。
发明内容
本发明提供了一种显示装置及背光源,该显示装置中,蓝相液晶层的驱动电场为垂直于彩膜基板和阵列基板的垂直电场,可以有效降低蓝相液晶的驱动电压,且背光源出射较好的斜向光线进入显示面板,可以有效提高显示装置的开口率。
为达到上述目的,本发明提供以下技术方案:
一种显示装置,包括:液晶面板和背光源,所述液晶面板包括相对设置的彩膜基板和阵列基板、设置于所述彩膜基板和所述阵列基板之间的蓝相液晶层,所述彩膜基板朝向所述阵列基板的一侧设有第一驱动电极,所述阵列基板朝向所述彩膜基板的一侧设有第二驱动电极;所述背光源包括:
导光板;
设于所述导光板出光面上的复合膜层,所述复合膜层包括多层介质膜层,且所述多层介质膜层沿远离所述导光板的出光面的方向折射率依次降低;
位于所述导光板入光侧的光源;
位于所述导光板背离其出光面一侧的反射片;
位于所述导光板出光面一侧的下棱镜片;
位于所述下棱镜片背离所述导光板一侧的上棱镜片。
上述显示装置中,液晶层为蓝相液晶层,彩膜基板朝向阵列基板的一侧设有第一驱动电极,阵列基板朝向彩膜基板的一侧设有第二驱动电极,则,可以形成与彩膜基板和阵列基板垂直的驱动电场,可以有效的降低驱动电压,在阵列基板的背离蓝相液晶层的一侧设置背光源,在背光源中,导光板入光侧的光源发出光线,光线进入导光板,在导光板的出光面射出,然后光线进入出光面上的复合膜层,其中复合膜层包括多层折射率不相同的介质膜层,多个介质膜层中每个介质膜层沿着远离导光板出光面的方向折射率逐次降低,即多层介质膜层中距离出光面越远的折射率越小,则,光线穿过多层介质膜层时经过多次折射,光线偏离每层中的法线的夹角会越来越大,当光线出射复合膜层时,形成偏离法线角度较大的光线,即,相对于复合膜层出光面形成斜向光线,且斜向光线与复合膜层出光面角度较小,即偏离发现角度较大,斜向光线再斜向穿过下棱镜片和上棱镜片,下棱镜片和上棱镜片有聚光作用,实现各个方向的斜向光线较好的出射,使背光源光线出射效果好,较好的斜向光线进入液晶面板,有利于提高显示装置的开口率;当给蓝相液晶层施加驱动电场时,蓝相液晶变现各向异性,斜向入射光射入显示面板,可以透过蓝相液晶层,显示面板出现显示画面。
因此,上述显示装置中,蓝相液晶层的驱动电场为垂直于彩膜基板和阵列基板的垂直电场,可以有效降低蓝相液晶的驱动电压,且背光源出射较好的斜向光线进入显示面板,可以有效提高显示装置的开口率。
优选地,所述下棱镜片包括平行垫,所述平行垫背离所述导光板的侧面形成有多个棱状凸起,所述且每个所述凸起的两个侧面分别设有三棱镜。
优选地,至少一个所述凸起的两个侧面与所述导光板出光面的夹角不同。
优选地,所述凸起的两个侧面与所述导光板的出光面夹角范围为15°~80°。
优选地,所述凸起的两个侧面与所述导光板的出光面夹角为45°。
优选地,所述凸起的高度为55μm~120μm。
优选地,所述凸起的高度为80μm。
优选地,相邻的两个所述凸起的棱线之间的距离为55μm~100μm。
优选地,相邻的两个所述凸起的棱线之间的距离为60μm。
优选地,所述三棱镜的材料为镧玻璃或铌玻璃。
优选地,所述平行垫的材料包括PET。
优选地,所述上棱镜片与所述下棱镜片结构相同,且上棱镜片中的三棱镜长度方向与所述下棱镜片中的三棱镜长度方向垂直设置。
优选地,所述复合膜层设置3~6层。
优选地,所述反射片朝向所述阵列基板的表面形成多个平行排列的条状凹形结构,且所述反射片背离所述导光板的一侧设有银反射层。
优选地,所述凹形结构的表面的曲率半径为72μm~560μm。
本发明还提供了一种背光源,用于蓝相液晶显示装置,包括:
导光板;
设于所述导光板出光面上的复合膜层,所述复合膜层包括多层介质膜层,且所述多层介质膜层沿远离所述导光板的出光面的方向折射率依次降低;
位于所述导光板入光侧的光源;
位于所述导光板背离其出光面一侧的反射片;
位于所述导光板出光面一侧的下棱镜片;
位于所述下棱镜片背离所述导光板一侧的上棱镜片。
附图说明
图1为本发明实施例提供的显示装置的结构示意图;
图2为本发明实施例提供的下棱镜片的结构示意图;
图3为本发明实施例提供的下棱镜片中光线的光路示意图;
图4为本发明实施例提供的反射片的俯视示意图;
图5为图4中沿A-A向的截面示意图;
图6为本发明实施例提供的导光板和复合膜层的结构示意图;
图7为本发明实施例提供的复合膜层中光线传播的光路示意图;。
图标:1-彩膜基板;2-阵列基板;3-蓝相液晶层;4-导光板;5-复合膜层;6-光源;7-反射片;8-下棱镜片;9-上棱镜片;71-凹形结构;72-银反射层;81-平行垫;82-三棱镜。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做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。
请参考图1,本发明实施例提供的一种显示装置,包括:液晶面板和背光源,液晶面板包括相对设置的彩膜基板1和阵列基板2、设置于彩膜基板1和阵列基板2之间的蓝相液晶层3,彩膜基板1朝向阵列基板2的一侧设有第一驱动电极,阵列基板2朝向彩膜基板1的一侧设有第二驱动电极;背光源包括:导光板4;设于导光板4出光面上的复合膜层5,复合膜层5包括多层介质膜层,且多层介质膜层沿远离导光板4的出光面的方向折射率依次降低;位于导光板4入光侧的光源6;位于导光板4背离其出光面一侧的反射片7;位于导光板4出光面一侧的下棱镜片8;位于下棱镜片8背离导光板4一侧的上棱镜片9。
上述显示装置中,液晶层为蓝相液晶层3,彩膜基板1朝向阵列基板2的一侧设有第一驱动电极,阵列基板2朝向彩膜基板1的一侧设有第二驱动电极,则,可以形成与彩膜基板1和阵列基板2垂直的驱动电场,可以有效的降低驱动电压,在阵列基板2的背离蓝相液晶层3的一侧设置背光源,在背光源中,导光板4入光侧的光源6发出光线,光线进入导光板4,在导光板4的出光面射出,然后光线进入出光面上的复合膜层5,如图6和图7所示,其中复合膜层5包括多层折射率不相同的介质膜层,多个介质膜层中每个介质膜层沿着远离导光板4出光面的方向折射率逐次降低,即多层介质膜层中距离出光面越远的折射率越小,则,光线穿过多层介质膜层时经过多次折射,光线偏离每层中的法线的夹角会越来越大,当光线出射复合膜层5时,形成偏离法线角度较大的光线,即,相对于复合膜层5出光面形成斜向光线,且斜向光线与复合膜层5出光面角度较小,即偏离发现角度较大,斜向光线再斜向穿过下棱镜片8和上棱镜片9,下棱镜片8和上棱镜片9有聚光作用,实现各个方向的斜向光线较好的出射,使背光源光线出射效果好,较好的斜向光线进入液晶面板,有利于提高显示装置的开口率;当给蓝相液晶层3施加驱动电场时,蓝相液晶变现各向异性,斜向入射光射入显示面板,可以透过蓝相液晶层3,显示面板出现显示画面。
因此,上述显示装置中,蓝相液晶层3的驱动电场为垂直于彩膜基板1和阵列基板2的垂直电场,可以有效降低蓝相液晶的驱动电压,且背光源出射较好的斜向光线进入显示面板,可以有效提高显示装置的开口率。
具体地,第一驱动电极可以设置为公共电极,第二驱动电极可以设置为像素电极;或者,第一驱动电极可以设置为像素电极,第二驱动电极设置为像素电极。
如图2和图3所示,下棱镜片8包括平行垫81,平行垫81背离导光板4的侧面形成有多个棱状凸起,且每个凸起的两个侧面分别设有三棱镜82。光线从导光板4上的复合膜层5射出进入平行垫81,从平行垫81的凸起侧面进入三棱镜82与凸起侧面接触的第一棱镜面,如图3所示,根据光线穿过三棱镜82的折射原理,易知,在第一棱镜面进入三棱镜82的光线会在三棱镜82的第二棱镜面或第三棱镜82面射出,且射出三棱镜82的光线会偏向与第一棱镜面相对的棱出射,则,三棱镜82对在第一棱镜面入射的光线起到聚光作用。
上述平行垫81中,至少一个凸起的两个侧面与导光板4出光面的夹角不同。凸起的两个侧面与导光板4出光面之间的夹角不同,则,三棱镜82设置在凸起的侧面上时第一棱镜面倾斜的角度不同,则聚光方向有所不同,可以使下棱镜片8向不同方向聚集光线,使下棱镜片8在不同方向都出射较好的光线。
具体地,如图3所示,由于平行垫81朝向导光板4出光面的一侧与导光板4出光面平行,根据三角形知识易知,图3中θ角的大小即为凸起的两个侧面与导光板4的出光面夹角的大小。凸起的两个侧面与导光板4的出光面夹角范围为15°~80°。限制凸起的两个侧面与导光板4的出光面夹角范围在15°~80°内,可以使下棱镜片8有较好的聚光效果。
具体地,凸起的两个侧面与导光板4的出光面夹角为45°。
凸起的两个侧面与导光板4的出光面夹角设为45°,使下棱镜片8聚光效果更好,有利于下棱镜片8出射较好的斜向光线。
上述凸起的实施时,凸起的高度为55μm~120μm。
具体地,凸起的高度设置为80μm。
具体地,相邻的两个凸起的棱线之间的距离为55μm~100μm。相邻的两个凸起的棱线之间的距离限制在55μm~100μm,即,对进入下棱镜片8中每个三棱镜82的光线进行限制,即限制每个三棱镜82的聚光量,提高下棱镜片8的出射光的均匀性。
具体地,相邻的两个凸起的棱线之间的距离设置为60μm。相邻的两个凸起的棱线之间的距离为60μm,即,下棱镜片8中每个三棱镜82设置合适的聚光量,可以使下棱镜片8的出光均匀性更好。
具体地,三棱镜82的材料为镧玻璃或铌玻璃。三棱镜82选用透光性较好的镧玻璃或铌玻璃,也可以采用其他高折射率的材料,提高下棱镜片8的聚光效果。
具体地,平行垫81的材料包括PET。
具体地,上述显示装置中,上棱镜片9与下棱镜片8结构相同,且上棱镜片9中的三棱镜82长度方向与下棱镜片8中的三棱镜82长度方向垂直设置。上棱镜片9与下棱镜片8结构相同,即,上棱镜片9也具有聚光效果,且上棱镜片9中的三棱镜82长度方向与下棱镜片8中的三棱镜82长度方向垂直设置,则上棱镜片9的聚光方向不同于下棱镜片8,在下棱镜片8上设置上棱镜片9,上棱镜片9和下棱镜片8配合,可以提高光线背光源在各个方向的出光效果,提高背光源的出光均匀性。
具体地,复合膜层5设置3~6层。
如图4和图5所示,反射片7朝向阵列基板2的表面形成多个平行排列的条状凹形结构71,且反射片7背离导光板4的一侧设有银反射层72。凹形结构71的表面为曲面,可以减少光线射到凹形结构71的表面再反射后发生衍射或干涉;反射片7背离导光板4的一侧设有银反射层72,银反射层72可以使光线进行全反射,提高光利用率。
具体地,凹形结构71的表面的曲率半径为72μm~560μm。凹形结构71的表面为曲面,曲率半径设置在72μm~560μm,可以更有效避免光线射到凹形结构71的表面再反射后发生衍射或干涉。
本发明实施例还提供了一种背光源,用于蓝相液晶显示装置,包括:导光板4;设于导光板4出光面上的复合膜层5,复合膜层5包括多层介质膜层,且多层介质膜层沿远离导光板4的出光面的方向折射率依次降低;位于导光板4入光侧的光源6;位于导光板4背离其出光面一侧的反射片7;位于导光板4出光面一侧的下棱镜片8;位于下棱镜片8背离导光板4一侧的上棱镜片9。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (16)
1.一种显示装置,包括:液晶面板和背光源,其特征在于,所述液晶面板包括相对设置的彩膜基板和阵列基板、设置于所述彩膜基板和所述阵列基板之间的蓝相液晶层,所述彩膜基板朝向所述阵列基板的一侧设有第一驱动电极,所述阵列基板朝向所述彩膜基板的一侧设有第二驱动电极;所述背光源包括:
导光板;
设于所述导光板出光面上的复合膜层,所述复合膜层包括多层介质膜层,且所述多层介质膜层沿远离所述导光板的出光面的方向折射率依次降低;
位于所述导光板入光侧的光源;
位于所述导光板背离其出光面一侧的反射片;
位于所述导光板出光面一侧的下棱镜片;
位于所述下棱镜片背离所述导光板一侧的上棱镜片。
2.根据权利要求1所述的显示装置,其特征在于,所述下棱镜片包括平行垫,所述平行垫背离所述导光板的侧面形成有多个棱状凸起,所述且每个所述凸起的两个侧面分别设有三棱镜。
3.根据权利要求2所述的显示装置,其特征在于,至少一个所述凸起的两个侧面与所述导光板出光面的夹角不同。
4.根据权利要求2所述的显示装置,其特征在于,所述凸起的两个侧面与所述导光板的出光面夹角范围为15°~80°。
5.根据权利要求4所述的显示装置,其特征在于,所述凸起的两个侧面与所述导光板的出光面夹角为45°。
6.根据权利要求2所述的显示装置,其特征在于,所述凸起的高度为55μm~120μm。
7.根据权利要求6所述的显示装置,其特征在于,所述凸起的高度为80μm。
8.根据权利要求2所述的显示装置,其特征在于,相邻的两个所述凸起的棱线之间的距离为55μm~100μm。
9.根据权利要求8所述的显示装置,其特征在于,相邻的两个所述凸起的棱线之间的距离为60μm。
10.根据权利要求2所述的显示装置,其特征在于,所述三棱镜的材料为镧玻璃或铌玻璃。
11.根据权利要求2所述的显示装置,其特征在于,所述平行垫的材料包括PET。
12.根据权利要求2-11任一项所述的显示装置,其特征在于,所述上棱镜片与所述下棱镜片结构相同,且上棱镜片中的三棱镜长度方向与所述下棱镜片中的三棱镜长度方向垂直设置。
13.根据权利要求1所述的显示装置,其特征在于,所述复合膜层设置3~6层。
14.根据权利要求1所述的显示装置,其特征在于,所述反射片朝向所述阵列基板的表面形成多个平行排列的条状凹形结构,且所述反射片背离所述导光板的一侧设有银反射层。
15.根据权利要求14所述的显示装置,其特征在于,所述凹形结构的表面的曲率半径为72μm~560μm。
16.一种背光源,用于蓝相液晶显示装置,其特征在于,包括:
导光板;
设于所述导光板出光面上的复合膜层,所述复合膜层包括多层介质膜层,且所述多层介质膜层沿远离所述导光板的出光面的方向折射率依次降低;
位于所述导光板入光侧的光源;
位于所述导光板背离其出光面一侧的反射片;
位于所述导光板出光面一侧的下棱镜片;
位于所述下棱镜片背离所述导光板一侧的上棱镜片。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710898189.4A CN107505794B (zh) | 2017-09-28 | 2017-09-28 | 一种显示装置及背光源 |
US15/943,757 US10168572B1 (en) | 2017-09-28 | 2018-04-03 | Display device and backlight source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710898189.4A CN107505794B (zh) | 2017-09-28 | 2017-09-28 | 一种显示装置及背光源 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107505794A true CN107505794A (zh) | 2017-12-22 |
CN107505794B CN107505794B (zh) | 2020-07-21 |
Family
ID=60699648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710898189.4A Expired - Fee Related CN107505794B (zh) | 2017-09-28 | 2017-09-28 | 一种显示装置及背光源 |
Country Status (2)
Country | Link |
---|---|
US (1) | US10168572B1 (zh) |
CN (1) | CN107505794B (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107918225A (zh) * | 2018-01-05 | 2018-04-17 | 京东方科技集团股份有限公司 | 一种彩膜基板及其制作方法、液晶显示面板及显示装置 |
CN109814672A (zh) * | 2019-03-20 | 2019-05-28 | 中国兵器工业计算机应用技术研究所 | 一种加固显控终端 |
CN111880331A (zh) * | 2020-08-12 | 2020-11-03 | 深圳市利鼎液晶科技有限公司 | 一种液晶显示屏显示结构 |
CN112070862A (zh) * | 2020-09-04 | 2020-12-11 | 深圳爱卓软科技有限公司 | 图片的自助编辑方法 |
WO2023216849A1 (zh) * | 2022-05-07 | 2023-11-16 | 京东方科技集团股份有限公司 | 背光模组、显示模组、显示装置及防窥驱动方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1553226A (zh) * | 2003-06-04 | 2004-12-08 | 鸿富锦精密工业(深圳)有限公司 | 背光模组及其导光板 |
US20090303414A1 (en) * | 2008-06-05 | 2009-12-10 | Samsung Electronics Co., Ltd. | Optical member with a scatter layer, and backlight assembly and display device having the same |
CN101929655A (zh) * | 2009-06-17 | 2010-12-29 | 惠和株式会社 | 半透射性反射片及使用其的背光单元 |
WO2011136072A1 (ja) * | 2010-04-28 | 2011-11-03 | シャープ株式会社 | 表示装置 |
CN102282504A (zh) * | 2009-05-29 | 2011-12-14 | 夏普株式会社 | 液晶显示装置 |
CN202649646U (zh) * | 2012-07-09 | 2013-01-02 | 京东方科技集团股份有限公司 | 一种蓝相液晶显示器 |
CN105068177A (zh) * | 2015-09-18 | 2015-11-18 | 京东方科技集团股份有限公司 | 一种光学组件、显示装置 |
CN106873241A (zh) * | 2017-02-09 | 2017-06-20 | 青岛海信电器股份有限公司 | 一种背光模组和液晶显示装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101375851B1 (ko) * | 2007-06-01 | 2014-04-01 | 엘지디스플레이 주식회사 | 액정표시장치 |
TWI386728B (zh) * | 2009-01-20 | 2013-02-21 | Au Optronics Corp | 背光模組與液晶顯示器 |
EP2497011A4 (en) * | 2009-11-06 | 2013-10-02 | Semiconductor Energy Lab | TOUCH PANEL AND METHOD FOR CONTROLLING TOUCH PANEL |
WO2011055638A1 (en) * | 2009-11-06 | 2011-05-12 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
US8830278B2 (en) * | 2010-04-09 | 2014-09-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
KR101879570B1 (ko) * | 2010-04-28 | 2018-07-20 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 액정 표시 장치 및 그 제작 방법 |
JP5836846B2 (ja) * | 2011-03-11 | 2015-12-24 | 株式会社半導体エネルギー研究所 | 液晶表示装置の作製方法 |
KR20130021702A (ko) * | 2011-08-23 | 2013-03-06 | 삼성디스플레이 주식회사 | 입체 영상 표시 장치 |
EP2758831B1 (en) * | 2011-09-20 | 2017-05-17 | 3M Innovative Properties Company | Backlight device |
-
2017
- 2017-09-28 CN CN201710898189.4A patent/CN107505794B/zh not_active Expired - Fee Related
-
2018
- 2018-04-03 US US15/943,757 patent/US10168572B1/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1553226A (zh) * | 2003-06-04 | 2004-12-08 | 鸿富锦精密工业(深圳)有限公司 | 背光模组及其导光板 |
US20090303414A1 (en) * | 2008-06-05 | 2009-12-10 | Samsung Electronics Co., Ltd. | Optical member with a scatter layer, and backlight assembly and display device having the same |
CN102282504A (zh) * | 2009-05-29 | 2011-12-14 | 夏普株式会社 | 液晶显示装置 |
CN101929655A (zh) * | 2009-06-17 | 2010-12-29 | 惠和株式会社 | 半透射性反射片及使用其的背光单元 |
WO2011136072A1 (ja) * | 2010-04-28 | 2011-11-03 | シャープ株式会社 | 表示装置 |
CN202649646U (zh) * | 2012-07-09 | 2013-01-02 | 京东方科技集团股份有限公司 | 一种蓝相液晶显示器 |
CN105068177A (zh) * | 2015-09-18 | 2015-11-18 | 京东方科技集团股份有限公司 | 一种光学组件、显示装置 |
CN106873241A (zh) * | 2017-02-09 | 2017-06-20 | 青岛海信电器股份有限公司 | 一种背光模组和液晶显示装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107918225A (zh) * | 2018-01-05 | 2018-04-17 | 京东方科技集团股份有限公司 | 一种彩膜基板及其制作方法、液晶显示面板及显示装置 |
CN109814672A (zh) * | 2019-03-20 | 2019-05-28 | 中国兵器工业计算机应用技术研究所 | 一种加固显控终端 |
CN111880331A (zh) * | 2020-08-12 | 2020-11-03 | 深圳市利鼎液晶科技有限公司 | 一种液晶显示屏显示结构 |
CN112070862A (zh) * | 2020-09-04 | 2020-12-11 | 深圳爱卓软科技有限公司 | 图片的自助编辑方法 |
WO2023216849A1 (zh) * | 2022-05-07 | 2023-11-16 | 京东方科技集团股份有限公司 | 背光模组、显示模组、显示装置及防窥驱动方法 |
Also Published As
Publication number | Publication date |
---|---|
CN107505794B (zh) | 2020-07-21 |
US10168572B1 (en) | 2019-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107505794A (zh) | 一种显示装置及背光源 | |
JP6112108B2 (ja) | 照明装置および表示装置 | |
KR101178722B1 (ko) | 액정표시장치 백라이트 유닛용 도광판 및 이를 이용한 액정표시장치 백라이트 유닛 | |
WO2012081497A1 (ja) | 照明装置、表示装置および3次元表示装置 | |
CN105116477B (zh) | 光学元件、导光板、棱镜、背光模组及显示装置 | |
TW201407196A (zh) | 顯示裝置及照明裝置 | |
CN204228987U (zh) | 一种聚光增亮膜 | |
KR20160072049A (ko) | 복합 광학 시트, 이를 이용한 액정 표시 장치 및 그 제조방법 | |
CN108717243A (zh) | 显示装置 | |
CN111796349A (zh) | 一种视角扩散膜片及显示面板 | |
CN103162192A (zh) | 一种直下式背光模组 | |
WO2020042525A1 (zh) | 背光模组及液晶显示装置 | |
CN104820257A (zh) | 一种导光板、背光源和显示装置 | |
TW200412443A (en) | Optical element, planar lighting unit and liquid crystal display unit | |
KR101070686B1 (ko) | 액정디스플레이용 복합시트 및 이를 이용한 백라이트 유닛 | |
CN103246107A (zh) | 一种显示装置、彩膜基板及其制作方法 | |
KR102098213B1 (ko) | 광학시트 | |
CN105867028B (zh) | 一种背光模组及显示装置 | |
CN104375235B (zh) | 导光板、背光模组及显示器 | |
CN106291937A (zh) | 一种低能耗高均匀度光场显示*** | |
KR102112652B1 (ko) | 액정표시장치 | |
WO2022267545A1 (zh) | 可切换液晶光学器件 | |
TWI526742B (zh) | 曲型背光模組 | |
WO2023108797A1 (zh) | 视角扩散膜片及显示装置 | |
CN105259710A (zh) | 光配向光罩 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 |