CN107272277A - 一种反射比例可调节的红外反射器件 - Google Patents

一种反射比例可调节的红外反射器件 Download PDF

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CN107272277A
CN107272277A CN201710451872.3A CN201710451872A CN107272277A CN 107272277 A CN107272277 A CN 107272277A CN 201710451872 A CN201710451872 A CN 201710451872A CN 107272277 A CN107272277 A CN 107272277A
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liquid crystal
pieces
transparent conductive
infrared external
reflection device
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胡小文
孙海涛
李楠
周国富
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South China Normal University
Shenzhen Guohua Optoelectronics Co Ltd
Academy of Shenzhen Guohua Optoelectronics
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South China Normal University
Shenzhen Guohua Optoelectronics Co Ltd
Academy of Shenzhen Guohua Optoelectronics
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Priority to CN201710451872.3A priority Critical patent/CN107272277A/zh
Publication of CN107272277A publication Critical patent/CN107272277A/zh
Priority to PCT/CN2017/110972 priority patent/WO2018227870A1/zh
Priority to US16/486,225 priority patent/US11835831B2/en
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    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
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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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    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
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    • 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
    • G02F1/13712—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 the liquid crystal having negative dielectric anisotropy
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Abstract

本发明公开了一种反射比例可调节的红外反射器件，该红外反射器件由两块透光导电基板封装形成，两块透光导电基板之间形成调节区，调节区内填充有液晶混合物，通过将两块所述透光导电基板均中至少一块的电极层制备成由至少两块相互独立的电极区域组成的电极层，同一块所述透光导电基板的各个所述电极区域分别与开关串联后一起并联到所述电源组件的同一电极上，可以通过控制开关的开合，控制部分区域的液晶混合物处于电场下，部分区域的液晶混合物不处于电场下，使得不同电极区域对应区域的反射红外线的反射比例不同。可根据实际需要调节红外线的反射比例，使适量红外线透射到建筑内部，有利于调控建筑内部温度，减少对空调等温度调节设备的依赖。

Description

一种反射比例可调节的红外反射器件
技术领域
本发明涉及建筑家具生活领域，具体涉及一种反射比例可调节的红外反射器件。
背景技术
建筑内部环境的舒适性是人们一直以来的追求，而温度是影响舒适性的一个重要因素，因此人们使用空调等各种温度调节设备来调节建筑内部温度，而随着这些设备的使用，大量的能源被消耗，同时对环境产生了十分不利的影响。
于是各种建筑外壳材料开始大量应用并发挥了重要作用，同时很多创新技术也开始出现，用于建筑外墙的不透明的保温隔热材料和技术已经发展较为成熟，但阳光中的红外线仍然可以通过窗户和玻璃幕墙等器件进入建筑内部，从而对建筑内部温度产生重要影响，于是人们开始关注用于窗户的红外反射技术和材料。
传统的窗帘、百叶窗等遮光器件对可见光的透过影响较大，建筑内部需要其余的光源，不利于节能减排，并且反射红外线的效果一般；无机镀膜材料可以兼顾对可见光的高透过率和对红外线的高反射率，但其对红外线的反射是不可调节的，在温度较低的情况下仍然反射阳光中的红外线，增大了温度调节设备的工作负荷，不利于节约能源。
红外反射片可以兼具对红外线的透过和反射，同时不影响可见光的透过，在电压的调节下，红外反射片可以在低温时透过红外线，在高温时反射阳光中部分红外线，达到调节建筑内部温度的目的，一定程度上可以替代空调等室内温度调节设备的作用，在车窗玻璃，家居玻璃窗，玻璃幕墙等领域有着较好的应用前景。但是目前的红外反射片的发射比例均不可以调节，只能实现开、关的调节。
发明内容
本发明所要解决的技术问题是提供一种反射比例可调节的红外反射器件。
本发明所采取的技术方案是：
一种红外反射器件，包括相对设置的两块透光导电基板，还包括电源组件和多个开关，两块所述透光导电基板之间封装形成调节区，所述调节区内填充有液晶混合物，所述液晶混合物中包括负性液晶和手性掺杂剂，两块所述透光导电基板均包括透光基板和电极层，所述电极层设于两块所述透光基板相对的表面上，至少一块所述透光导电基板的电极层包括至少两块相互独立的电极区域，同一块所述透光导电基板的各个所述电极区域分别与开关串联后一起并联到所述电源组件的同一电极上。
在一些优选的实施方式中，两块所述透光导电基板的电极层均包括至少两块相互独立的电极区域。
在一些优选的实施方式中，所述电极区域呈条带状。
在上述方案的优选的实施方式中，两块所述透光导电基板相对的表面上还设有平行配向层。
在上述方案的进一步优选的实施方式中，所述液晶混合物中还包括光引发剂和液晶单体，所述液晶单体在紫外光照射下可形成聚合物网络。
在上述方案的进一步优选的实施方式中，所述液晶单体为手性单体。
在上述方案的进一步优选的实施方式中，所述液晶单体和/或所述手性掺杂剂能够捕获所述液晶混合物中的杂质阳离子使自身带有正电荷。
在上述方案的再进一步优选的实施方式中，所述液晶单体和/或所述手性掺杂剂上带有能够捕获阳离子的酯基。
本发明的有益效果是：
本发明提供了一种反射比例可调节的红外反射器件，该红外反射器件由两块透光导电基板封装形成，两块透光导电基板之间形成调节区，调节区内填充有液晶混合物，通过将两块所述透光导电基板均中至少一块的电极层制备成由至少两块相互独立的电极区域组成的电极层，同一块所述透光导电基板的各个所述电极区域分别与开关串联后一起并联到所述电源组件的同一电极上，可以通过控制开关的开合，控制部分区域的液晶混合物处于电场下，部分区域的液晶混合物不处于电场下，使得不同电极区域对应的区域的反射红外线的反射比例不同。可根据实际需要调节反射红外线的反射比例，使适量的红外线透射到建筑内部，有利于调控建筑内部温度，减少空调等空气调节设备的使用，有利于节约能源，保护生态环境，在建筑外墙，汽车玻璃等领域具有较好的应用前景。
附图说明
图1为红外反射器件的截面图示意图。
图2为红外反射器件在各开关均打开时局部截面示意图。
图3为红外反射器件在部分开关闭合时局部截面示意图。
具体实施方式
实施例1：
参照图1，图1为红外反射器件的截面图示意图，本发明提供了一种红外反射器件包括相对设置的第一透光导电基板和第二透光导电基板以及电源组件8，两块透光导电基板之间通过封装胶框6封装形成调节区4，所述调节区4内填充有液晶混合物，所述调节区4内还设有用于支撑所述红外反射器件厚度的间隔子5，所述间隔子5的高度等于所述调节区4的厚度，两块透光导电基板相对的表面上均设有平行配向层7。两块所述透光导电基板均包括透光基板1和电极层2，所述电极层2设于两块所述透光基板1相对的表面上，至少一块所述透光导电基板的电极层2包括至少两块相互独立的电极区域3，同一块所述透光导电基板的各个所述电极区域分别与开关串联后一起并联到所述电源组件8的同一电极上，在本实施例中，第二透光导电基板的电极层2包括3块相互独立的电极区域3，所述电极区域3呈条带状，这三块电极区域3分别与开关11串联后一起并联到所述电源组件8的正极。第一透光导电基板的电极层2与一开关11串联后连接至电源组件8的负极。所述电极区域3通过光刻、蚀刻等工艺制备得到的。
参照图2，图2为红外反射器件在各开关均打开时局部截面示意图，所述液晶混合物中包括负性液晶9、手性掺杂剂10、光引发剂和液晶单体，负性液晶9、手性掺杂剂10、光引发剂和液晶单体的质量比为84：5：1：10，负性液晶9选用LC2079(德国默克公司)，液晶单体选用手性单体DB335(德国默克公司)，其结构式为,
手性掺杂剂选用S811(北京八亿时空公司)，其结构式为
光引发剂选用Irgacure-369(天津希恩思公司)，其结构式为
所述液晶单体在紫外光照射下可形成聚合物网络14，在平行配向层7的作用下，负性液晶9平行于两块透光导电基板，手性掺杂剂10使得负性液晶9呈螺旋结构的胆甾相液晶，胆甾相液晶能够反射红外光，在各开关11均打开时，所述胆甾相液晶具有单一螺距，所述液晶混合物中含有杂质阳离子12和杂质阴离子13，所述液晶单体和所述手性掺杂剂上均带有能够捕获阳离子12的酯基，能够捕获所述液晶混合物中的杂质阳离子12使自身带有正电荷。
参照图3，图3为红外反射器件在部分开关闭合时局部截面示意图，第二透光导电基板的电极层2包括3块相互独立的电极区域3，这三块电极区域3分别与开关11串联后一起并联到所述电源组件8的正极，与位于中间的电极区域3串联的开关11闭合，与第一透光导电基板的电极层2串联的开关11闭合。位于中间的电极区域3对应位置的所述阳离子11在电场作用下向所述第一透光导电基板移动，带动所述聚合物网络14向所述第一透光导电基板移动，使得此部分的所述胆甾相液晶的螺距发生改变，靠近所述第二透光导电基板的胆甾相液晶的螺距变大，靠近所述第一透光导电基板的胆甾相液晶的螺距变小。根据以下公式：λ＝P×n，其中，P表示手性向列相液晶的指向矢在螺旋轴方向上旋转2π的间距，即一个螺距，λ为单一螺距的胆甾相液晶反射波长，n为液晶的平均光折射率；Δλ＝(ne-no)×P＝Δn×P，其中，Δλ为反射光谱带宽，Δn为双折射率；当P值由单一值变成一个范围时，液晶混合物所反射的波长以及反射的频宽也会随之变宽。所以，此时，位于中间的电极区域3对应位置的液晶混合物所反射的频宽变宽，而位于两侧的电极区域3所对应位置的反射波长保持不变。
所以，本发明所述反射比例可调的红外反射器件可以通过控制与各电极区域串联的各个开关来控制器件反射红外线的部分占整个器件的比例，从而达到调节反射比例的目的。
实施例2：
本实施例与实施例1基本相同，不同之处在于：两块透光导电基板的电极层均包括多个相互独立的电极区域，各个电极区域均呈沿透光导电基板长度方向延伸的细条带状，同一块透光导电基板的各个电极区域分布与开关串联后一起并联到所述电源组件的同一极上，两块透光导电基板的电极区域分别连接电源组件的两极。

Claims (8)

1.一种红外反射器件，包括相对设置的两块透光导电基板，还包括电源组件和多个开关，其特征在于，两块所述透光导电基板之间封装形成调节区，所述调节区内填充有液晶混合物，两块所述透光导电基板均包括透光基板和电极层，所述电极层设于两块所述透光基板相对的表面上，至少一块所述透光导电基板的电极层包括至少两块相互独立的电极区域，同一块所述透光导电基板的各个所述电极区域分别与开关串联后一起并联到所述电源组件的同一电极上。
2.根据权利要求1所述的红外反射器件，其特征在于，两块所述透光导电基板的电极层均包括至少两块相互独立的电极区域。
3.根据权利要求1所述的红外反射器件，其特征在于，所述电极区域呈条带状。
4.根据权利要求1-3任一项所述的红外反射器件，其特征在于，两块所述透光导电基板相对的表面上还设有平行配向层。
5.根据权利要求4所述的红外反射器件，其特征在于，所述液晶混合物中包括负性液晶、手性掺杂剂、光引发剂和液晶单体，所述液晶单体在紫外光照射下可形成聚合物网络。
6.根据权利要求5所述的红外反射器件，其特征在于，所述液晶单体为手性单体。
7.根据权利要求5或6所述的红外反射器件，其特征在于，所述液晶单体和/或所述手性掺杂剂能够捕获所述液晶混合物中的杂质阳离子使自身带有正电荷。
8.根据权利要求7所述的红外反射器件，其特征在于，所述液晶单体和/或所述手性掺杂剂上带有能够捕获阳离子的酯基。
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