WO2018227870A1 - 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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Publication number
WO2018227870A1
WO2018227870A1 PCT/CN2017/110972 CN2017110972W WO2018227870A1 WO 2018227870 A1 WO2018227870 A1 WO 2018227870A1 CN 2017110972 W CN2017110972 W CN 2017110972W WO 2018227870 A1 WO2018227870 A1 WO 2018227870A1
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Prior art keywords
liquid crystal
electrode
transparent conductive
reflection
conductive substrates
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PCT/CN2017/110972
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English (en)
French (fr)
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周国富
胡小文
李楠
Original Assignee
华南师范大学
深圳市国华光电科技有限公司
深圳市国华光电研究院
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Priority to US16/486,225 priority Critical patent/US11835831B2/en
Publication of WO2018227870A1 publication Critical patent/WO2018227870A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/2464—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds featuring transparency control by applying voltage, e.g. LCD, electrochromic panels
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G02F1/13345—Network or three-dimensional gels
    • 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
    • G02F1/13712—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
    • 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
    • G02F1/13775—Polymer-stabilized liquid crystal layers
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/08—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 light absorbing layer
    • G02F2201/083—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 light absorbing layer infrared absorbing
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/11—Function characteristic involving infrared radiation

Definitions

  • the invention relates to the field of building furniture life, in particular to an infrared reflection device with adjustable reflection ratio.
  • the traditional shading devices such as curtains and blinds have a great influence on the transmission of visible light.
  • the rest of the light source is needed inside the building, which is not conducive to energy saving and emission reduction, and the effect of reflecting infrared rays is general; the inorganic coating material can balance the high transmittance of visible light and High reflectivity to infrared rays, but its reflection on infrared rays is not adjustable. At low temperatures, it still reflects infrared rays in sunlight, which increases the workload of temperature regulating equipment and is not conducive to energy conservation.
  • the infrared reflection sheet can combine the transmission and reflection of infrared rays without affecting the transmission of visible light. Under the adjustment of the voltage, the infrared reflection sheet can transmit infrared rays at a low temperature, and reflect some infrared rays in the sunlight at a high temperature to achieve adjustment.
  • the purpose of the internal temperature of the building can replace the role of indoor temperature regulating equipment such as air conditioners to a certain extent, and has a good application prospect in the fields of window glass, home glass window and glass curtain wall.
  • the emission ratio of the current infrared reflection sheet can not be adjusted, and only the adjustment of the opening and closing can be realized.
  • the technical problem to be solved by the present invention is to provide an infrared reflecting device with an adjustable reflectance ratio.
  • An infrared reflecting device comprising two oppositely disposed transparent conductive substrates, further comprising a power component and a plurality of switches, wherein the two transparent conductive substrates are packaged to form an adjustment zone, and the adjustment zone is filled with a liquid crystal mixture
  • the liquid crystal mixture includes a negative liquid crystal and a chiral dopant
  • the two transparent conductive substrates each include a transparent substrate and an electrode layer, and the electrode layer is disposed on opposite surfaces of the two transparent substrates.
  • the electrode layer of the at least one of the transparent conductive substrates includes at least two mutually independent electrode regions, and each of the electrode regions of the same transparent conductive substrate is connected in series with the switch. Parallel to the same electrode of the power supply assembly.
  • the electrode layers of the two light-transmissive conductive substrates each include at least two mutually independent electrode regions.
  • the electrode regions are in the form of strips.
  • the opposite surfaces of the two transparent conductive substrates are further provided with parallel alignment layers.
  • the liquid crystal mixture further includes a photoinitiator and a liquid crystal monomer, and the liquid crystal monomer forms a polymer network under ultraviolet light irradiation.
  • the liquid crystal monomer is a chiral monomer.
  • the liquid crystal monomer and/or the chiral dopant are capable of trapping impurity cations in the liquid crystal mixture to impart a positive charge to itself.
  • liquid crystal monomer and/or the chiral dopant are provided with an ester group capable of trapping a cation.
  • the invention provides an infrared reflection device with adjustable reflection ratio.
  • the infrared reflection device is formed by two transparent conductive substrates, and an adjustment region is formed between two transparent conductive substrates, and the adjustment region is filled with a liquid crystal mixture.
  • An electrode layer of at least one of the two transparent conductive substrates is prepared as an electrode layer composed of at least two mutually independent electrode regions, and each of the electrode regions of the same transparent conductive substrate is respectively connected in series with the switch
  • the liquid crystal mixture of the partial region can be controlled to be under an electric field by controlling the opening and closing of the switch, and the liquid crystal mixture of the partial region is not under the electric field, so that the reflection of the corresponding region of the different electrode regions
  • the infrared reflection ratio is different.
  • the reflection ratio of reflected infrared rays can be adjusted to transmit an appropriate amount of infrared rays to the interior of the building, which is beneficial to regulating the internal temperature of the building, reducing the use of air conditioning equipment such as air conditioners, saving energy and protecting the ecological environment. , automotive glass and other fields have a good application prospects.
  • 1 is a schematic cross-sectional view of an infrared reflecting device.
  • FIG. 2 is a partial cross-sectional view of the infrared reflecting device when each switch is open.
  • FIG 3 is a partial cross-sectional view of the infrared reflecting device when a part of the switch is closed.
  • the present invention provides an infrared reflecting device including a first light-transmitting conductive substrate and a second light-transmitting conductive substrate and a power supply assembly 8 disposed opposite to each other.
  • the adjustment zone 4 is filled with a liquid crystal mixture, and the adjustment zone 4 is further provided with a spacer 5 for supporting the thickness of the infrared reflection device, the spacer 5
  • the height is equal to the thickness of the adjustment zone 4, and the opposite alignment layers 7 are disposed on opposite surfaces of the two transparent conductive substrates.
  • the two transparent conductive substrates each include a transparent substrate 1 and an electrode layer 2, and the electrode layer 2 is disposed on opposite surfaces of the two transparent substrates 1 and at least one electrode layer of the transparent conductive substrate 2, comprising at least two mutually independent electrode regions 3, each of the electrode regions of the same transparent conductive substrate being connected in series with the switch and connected in parallel to the same electrode of the power supply assembly 8, in this embodiment,
  • the electrode layer 2 of the second light-transmissive conductive substrate comprises three mutually independent electrode regions 3, which are strip-shaped, and the three electrode regions 3 are connected in series with the switch 11 and are connected in parallel to the power supply unit 8 The positive pole.
  • the electrode layer 2 of the first light-transmitting conductive substrate is connected in series with a switch 11 and connected to the negative electrode of the power source assembly 8.
  • the electrode region 3 is prepared by a process such as photolithography, etching, or the like.
  • FIG. 2 is a partial cross-sectional view of the infrared reflecting device in which each switch is opened, the liquid crystal mixture includes a negative liquid crystal 9, a chiral dopant 10, a photoinitiator and a liquid crystal monomer, and a negative liquid crystal 9
  • the mass ratio of the chiral dopant 10, the photoinitiator and the liquid crystal monomer is 84:5:1:10
  • the negative liquid crystal 9 is selected as LC2079 (Merck, Germany)
  • the liquid crystal monomer is selected as the chiral monomer DB335 ( German Merck Company), its structural formula is
  • the chiral dopant is selected from S811 (Beijing 800 million time and space company), and its structural formula is
  • the photoinitiator is Irgacure-369 (Tianjin Siens), and its structural formula is
  • the liquid crystal monomer can form a polymer network 14 under ultraviolet light irradiation, and a negative liquid under the action of the parallel alignment layer 7.
  • the crystal 9 is parallel to the two transparent conductive substrates, the chiral dopant 10 is such that the negative liquid crystal 9 has a spiral structure of cholesteric liquid crystal, and the cholesteric liquid crystal can reflect infrared light.
  • the The cholesteric liquid crystal has a single pitch, and the liquid crystal mixture contains an impurity cation 12 and an impurity anion 13, and both the liquid crystal monomer and the chiral dopant have an ester group capable of trapping the cation 12, and are capable of capturing The impurity cation 12 in the liquid crystal mixture imparts a positive charge to itself.
  • FIG. 3 is a partial cross-sectional view of the infrared reflective device when the partial switch is closed.
  • the electrode layer 2 of the second transparent conductive substrate includes three mutually independent electrode regions 3, and the three electrode regions 3 are respectively connected in series with the switch 11. After being connected in parallel to the positive electrode of the power supply unit 8, the switch 11 connected in series with the electrode region 3 located in the middle is closed, and the switch 11 connected in series with the electrode layer 2 of the first light-transmitting conductive substrate is closed.
  • the cation 11 located at a corresponding position of the electrode region 3 in the middle moves to the first light-transmitting conductive substrate under the action of an electric field, and drives the polymer network 14 to move toward the first light-transmitting conductive substrate, so that the portion The pitch of the cholesteric liquid crystal changes, the pitch of the cholesteric liquid crystal near the second light-transmitting conductive substrate becomes larger, and the pitch of the cholesteric liquid crystal close to the first light-transmitting conductive substrate becomes smaller.
  • ⁇ P ⁇ n
  • P represents the pitch of the director of the chiral nematic liquid crystal rotated by 2 ⁇ in the direction of the helical axis, that is, a pitch
  • ⁇ is the single-pitch cholesteric liquid crystal reflection wavelength
  • n is The average refractive index of the liquid crystal
  • ⁇ (n e - n o )
  • ⁇ P ⁇ n ⁇ P, where ⁇ is the reflection spectral bandwidth, ⁇ n is the birefringence; when the P value changes from a single value to a range, the liquid crystal The wavelength reflected by the mixture and the bandwidth of the reflection will also widen. Therefore, at this time, the bandwidth of the liquid crystal mixture at the corresponding position of the electrode region 3 located in the middle becomes wider, and the reflection wavelength of the position corresponding to the electrode regions 3 located on both sides remains unchanged.
  • the infrared reflecting device with adjustable reflection ratio of the present invention can control the proportion of the portion of the device that reflects infrared rays to the entire device by controlling each switch connected in series with each electrode region, thereby achieving the purpose of adjusting the reflection ratio.
  • This embodiment is basically the same as the first embodiment except that the electrode layers of the two transparent conductive substrates each include a plurality of mutually independent electrode regions, and each of the electrode regions has a thin strip extending along the length of the transparent conductive substrate.
  • the electrode regions of the same light-transmissive conductive substrate are connected in series with the switch and connected in parallel to the same pole of the power module.
  • the electrode regions of the two transparent conductive substrates are respectively connected to the two poles of the power module.

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  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
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Abstract

一种反射比例可调节的红外反射器件，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（4），调节区（4）内填充有液晶混合物，通过将两块透光导电基板中至少一块的电极层（2）制备成由至少两块相互独立的电极区域（3）组成的电极层（2），同一块透光导电基板的各个电极区域（3）分别与开关（11）串联后一起并联到电源组件（8）的同一电极上，可以通过控制开关（11）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（3）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
Figure PCTCN2017110972-appb-000001
手性掺杂剂选用S811(北京八亿时空公司)，其结构式为
Figure PCTCN2017110972-appb-000002
光引发剂选用Irgacure-369(天津希恩思公司)，其结构式为
Figure PCTCN2017110972-appb-000003
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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