WO2019200851A1 - 一种电响应的液晶调光器件 - Google Patents

一种电响应的液晶调光器件 Download PDF

Info

Publication number
WO2019200851A1
WO2019200851A1 PCT/CN2018/109633 CN2018109633W WO2019200851A1 WO 2019200851 A1 WO2019200851 A1 WO 2019200851A1 CN 2018109633 W CN2018109633 W CN 2018109633W WO 2019200851 A1 WO2019200851 A1 WO 2019200851A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal layer
polymer network
dimming device
chiral dopant
Prior art date
Application number
PCT/CN2018/109633
Other languages
English (en)
French (fr)
Inventor
周国富
胡小文
赵威
孙海涛
杨文敏
水玲玲
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
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 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 filed Critical 华南师范大学
Priority to US16/498,740 priority Critical patent/US10901278B2/en
Publication of WO2019200851A1 publication Critical patent/WO2019200851A1/zh

Links

Images

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
    • G02F1/137—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
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • 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
    • G02F1/13718—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 based on a change of the texture state of a cholesteric liquid crystal
    • 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
    • G02F1/13706—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 positive 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
    • G02F2202/00—Materials and properties
    • G02F2202/06—Materials and properties dopant

Definitions

  • the invention relates to the field of building home life, in particular to an electrically responsive liquid crystal dimming device.
  • the liquid crystal-based smart glass can adjust the optical properties such as light transmission, reflection and scattering as needed, and can obtain rich colors by doping dyes and the like, and take the dye-doped color smart window as an example to control the liquid crystal through an external voltage.
  • the rotation of the molecules drives the change of the arrangement of the dye molecules to achieve the transmission or absorption of sunlight to meet people's needs.
  • the dye molecules will undergo fading and other changes under the action of ultraviolet light, which affects the stability of the dye-doped smart window. Since the dye molecules cannot reach the ideal orientation state, the dye molecules still exist when the dye-doped smart window is in a transparent state. The absorption behavior makes the smart window unable to achieve a colorless and transparent state.
  • the technical problem to be solved by the present invention is to provide an electro-responsive liquid crystal dimming device, which can replace the function of the curtain to a certain extent, solve the limitation of the coated glass and use no dye, and solve the dye. Limitations.
  • the invention provides an electrically responsive liquid crystal dimming device, comprising a transparent conductive substrate arranged in sequence, a polymer network stabilized liquid crystal layer, a positive liquid crystal layer, a polymer network stabilized liquid crystal layer 2 and a transparent conductive substrate 2,
  • the polymer network stabilizing liquid crystal layer and the polymer network stabilizing liquid crystal layer are prepared by curing a liquid crystal mixture by ultraviolet light, the liquid crystal mixture comprising a positive liquid crystal, a chiral dopant, a photoinitiator and A photopolymerizable liquid crystal monomer, wherein the polymer network stabilizes the liquid crystal layer and the polymer network stabilizes the circularly polarized light having the same polarization direction as the liquid crystal layer.
  • the polymerizable liquid crystal monomer forms a polymer network under the action of a chiral dopant and a photoinitiator, and a positive liquid crystal is dispersed in the polymer network.
  • the liquid crystal mixture includes 50 to 88.9 parts by mass of positive liquid crystal, 8 to 25 parts by mass of a chiral dopant, 0.1 to 5 parts by mass of a photoinitiator, and 3 to 20 parts by mass of a liquid crystal monomer.
  • the chiral dopant is a left-handed chiral dopant or a right-handed chiral dopant, and the left-handed chiral dopant is at least one of S1011 and S811, and the right-handed chirality
  • the dopant is at least one of R1011 and R811.
  • the liquid crystal monomer is at least one of HCM008 and HCM009.
  • the power supply component is electrically connected to the transparent conductive substrate and the transparent conductive substrate.
  • the power supply assembly includes an alternating current power source and a voltage controller connected in series to the alternating current power source.
  • the polymer network stabilizes the liquid crystal layer 1 and the polymer network stabilizes the liquid crystal layer 2 to have a thickness of 5 to 100 ⁇ m.
  • the positive liquid crystal layer has a thickness of 5 to 50 ⁇ m.
  • the electroresponsive liquid crystal dimming device of the invention adopts a polymer network to stabilize the liquid crystal layer, the positive liquid crystal layer and the polymer network to stabilize the liquid crystal layer.
  • the purpose of total reflection of circularly polarized light in a certain wavelength band can be achieved when no voltage is applied.
  • the liquid crystal dimming device exhibits a dark transparent state, and after applying a voltage, the polymer network can be changed in the stable liquid crystal layer and the positive liquid crystal layer.
  • the alignment of the positive liquid crystal drives the positive liquid crystals in each layer to switch between different states by changing the magnitude of the access voltage, thereby adjusting the reflection, scattering or transmission of light, thereby causing the liquid crystal dimming device to
  • the state changes in the order of dark transparent, light transparent, colorless opaque, colorless and transparent, thereby realizing the fuzzy and transparent adjustment of the liquid crystal dimming device, thereby avoiding the problem that the single setting mode cannot change the color depth of the device, in the window Glass, home glass windows and other parties have a good application prospect.
  • FIG. 1 is a schematic structural view of an electrically responsive liquid crystal dimming device of the present invention
  • FIG. 2 is a schematic diagram of a liquid crystal dimming device that is electrically responsive in a state in which no voltage is applied;
  • FIG. 3 is a schematic view of the electrically responsive liquid crystal dimming device in a light transparent state
  • FIG. 4 is a schematic view showing an electrically responsive liquid crystal dimming device in a colorless opaque state
  • Fig. 5 is a schematic view showing an electrically responsive liquid crystal dimming device in a colorless transparent state.
  • the embodiment provides an electrically responsive liquid crystal dimming device, including a transparent conductive substrate 10, a polymer network stabilized liquid crystal layer 20, a positive liquid crystal layer 3, and a polymer network stabilized liquid crystal layer.
  • Two 21 and a light-transmitting conductive substrate 211, the polymer network-stabilizing liquid crystal layer 20 and the polymer network-stabilizing liquid crystal layer 213 are obtained by ultraviolet curing of a liquid crystal mixture comprising a positive liquid crystal HTW138200 -100, a chiral dopant S1011, a photoinitiator Irgacure 651, and a photopolymerizable liquid crystal monomer HCM009, the polymer network stabilizing liquid crystal layer 20 and the polymer network stabilizing liquid crystal layer 2 21 having the same polarization direction of reflection Circularly polarized light.
  • the embodiment further provides a method for preparing the above-mentioned electrically responsive liquid crystal dimming device, comprising the steps of: taking 15 parts by mass of a polymerizable monomer HCM009 and 9 parts by mass of a left-handed chiral dopant in a yellow light environment. S1011, 0.5 parts by mass of a photoinitiator Irgacure 651, and 75.5 parts by mass of a positive liquid crystal HTW138200-100 were placed in a brown bottle and stirred at 60 ° C for 2 hours to prepare a liquid crystal mixture.
  • the liquid crystal mixture, the squeegee bar and the clean transparent conductive glass substrate were heated to 50 ° C, and the liquid crystal mixture was smeared on the substrate by a doctor blade, and the thickness of the bladed liquid crystal mixture was 15 ⁇ m, using 200 W.
  • the power ultraviolet light source is cured for 15 minutes to polymerize the polymerizable liquid crystal monomer in the liquid crystal mixture to form a polymer network stabilized liquid crystal layer.
  • the conductive glass substrate to be coated with the polymer network stabilized liquid crystal layer is cooled to room temperature, the same two conductive glass substrates are immersed in n-hexane or cyclohexane for 48 hours to remove unreacted liquid crystal molecules and chirality.
  • the dopant was then dried in a vacuum oven at 60 degrees C for 2 hours to remove n-hexane.
  • the same two conductive glass substrates with a polymer network-stabilized liquid crystal layer attached thereto have a polymer network stabilized liquid crystal layer as an inner surface, and a liquid crystal cell is formed.
  • the distance between the two substrates is 40 ⁇ m at 70 ° C.
  • the photoinitiator Irgacure-651 (purchased from Seanstone) has the structural formula:
  • the purpose of setting the virtual frame line is to clearly distinguish the polymer network from the liquid crystal layer, the polymer network stabilizes the liquid crystal layer, and stabilize the liquid crystal and the positive liquid crystal layer).
  • the polymerizable liquid crystal monomer forms a polymer network 4 under the action of a chiral dopant and a photoinitiator, and the positive liquid crystal 5 is dispersed in the polymer network 4, and is distributed in the polymer network when no voltage is applied.
  • the positive liquid crystal 5 in the liquid crystal layer (A region in the figure) and the polymer network stabilized liquid crystal layer 2 (C region in the figure) are arranged under the action of the polymer network 4 in a spiral structure in which the molecular long axis is parallel to the substrate, and Circularly polarized light with the same polarization direction (can reflect left-handed polarized light or both can reflect right-handed polarized light), and is distributed in the polymer network to stabilize the liquid crystal layer and the polymer network to stabilize the liquid crystal layer in the unpowered state.
  • the reflection peak of the liquid crystal is located in the visible light band, and the position of the reflection peak is determined by the concentration of the chiral dopant in the liquid crystal mixture, and the inverse of the liquid crystal dimming device can be changed by changing the concentration of the chiral dopant.
  • Shooting band In this embodiment, a left-handed chiral dopant is used, so that the polymer network stabilizes the liquid crystal layer and the polymer network stabilizes the liquid crystal layer to reflect the left-handed polarized light, and the polymer network stabilizes the liquid crystal layer and the polymer network stabilizes the liquid crystal.
  • the positive liquid crystal layer in the middle of layer 2 (B area in the figure) is capable of converting right-handed polarized light into left-handed polarized light, converting left-handed polarized light into right-helical polarized light, and circularly polarized light for a specific wavelength band when sunlight is incident.
  • the polymer network stabilizes the liquid crystal layer, and can reflect the left-handed polarized light therein, and transmits the right-handed polarized light.
  • the positive liquid crystal layer converts the right-handed polarized light of the liquid crystal layer through the polymer network into left-handed polarized light, and then The polymer network stabilizes the liquid crystal layer to reflect, thereby achieving the purpose of total reflection of circularly polarized light in a certain wavelength band, and the liquid crystal dimming device exhibits a dark transparent state.
  • the positive liquid crystal distributed in the polymer network stabilizing liquid crystal layer 1 and the polymer network stabilizing liquid crystal layer can be arranged in a spiral structure parallel to the substrate along the long axis of the molecule, and the focal point
  • the arrangement of the cone phase and the arrangement of the long axis of the molecule perpendicular to the substrate are mutually converted;
  • the positive liquid crystal distributed in the positive liquid crystal layer may be perpendicular to the substrate along the long axis of the molecule parallel to the substrate and the long axis of the molecule
  • the left-handed polarized light cannot be converted into right-handed polarized light, and the right-handed The polarized light is converted into left-handed polarized light, so the smart window can only reflect the left-handed polarized light of a certain band, and the liquid crystal dimming device is in a light transparent state.
  • the arrangement of positive liquid crystal molecules distributed in the polymer network stabilizes the liquid crystal layer (A region in the figure) and the polymer network stabilizes the liquid crystal layer 2 (C region in the figure).
  • the polymer network stabilizes the liquid crystal layer and the polymer network stabilizes the liquid crystal layer to have a strong scattering effect on the visible light, and the liquid crystal dimming device is in a colorless and opaque state.
  • the liquid crystal dimming device when the external voltage is sufficiently large, all the small molecule liquid crystals in the liquid crystal dimming device are converted into an arrangement perpendicular to the glass substrate, and have no influence on the light transmission. At this time, the liquid crystal dimming device is colorless and transparent. .
  • the embodiment provides an electrically responsive liquid crystal dimming device, comprising a transparent conductive substrate arranged in sequence, a polymer network stabilized liquid crystal layer, a positive liquid crystal layer, a polymer network stabilized liquid crystal layer 2 and a transparent conductive substrate 2
  • the polymer network stabilizes the liquid crystal layer 1 and the polymer network stabilizes the thickness of the liquid crystal layer 2 to 100 ⁇ m, the thickness of the positive liquid crystal layer is 5 ⁇ m, the polymer network stabilizes the liquid crystal layer 1 and the polymer network stabilizes the liquid crystal layer 2.
  • the liquid crystal mixture comprises 88.9 parts by mass of a positive liquid crystal E7, 25 parts by mass of a right-handed chiral dopant R811, 0.1 parts by mass of a photoinitiator Irgacure 819 and 3 parts by mass.
  • the photoinitiator Irgacure-819 (purchased from Seanstone) has the structural formula:
  • the embodiment provides an electrically responsive liquid crystal dimming device, comprising a transparent conductive substrate arranged in sequence, a polymer network stabilized liquid crystal layer, a positive liquid crystal layer, a polymer network stabilized liquid crystal layer 2 and a transparent conductive substrate 2
  • the polymer network stabilizes the liquid crystal layer 1 and the polymer network stabilizes the liquid crystal layer 2 to have a thickness of 5 ⁇ m, and the positive liquid crystal layer has a thickness of 50 ⁇ m.
  • the polymer network stabilizes the liquid crystal layer and the polymer network stabilizes the liquid crystal layer. 2.
  • the liquid crystal mixture comprises 80 parts by mass of a positive liquid crystal E7, 12 parts by mass of a left-handed chiral dopant S811, 3 parts by mass of a photoinitiator Irgacure 819, and 10 parts by mass.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Liquid Crystal (AREA)
  • Dispersion Chemistry (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)

Abstract

一种电响应的液晶调光器件，包括依次设置的透光导电基板一（10）、聚合物网络稳定液晶层一（20）、正性液晶层（3）、聚合物网络稳定液晶层二（21）和透光导电基板二（11），聚合物网络稳定液晶层一（20）和聚合物网络稳定液晶层二（21）由液晶混合物经紫外光固化制得，液晶混合物包括正性液晶、手性掺杂剂、光引发剂和可光聚合的液晶单体，聚合物网络稳定液晶层一（20）和聚合物网络稳定液晶层二（21）反射偏振方向相同的圆偏振光。液晶调光器件通过改变接入电压的大小来驱动各层内的正性液晶在不同状态之间转换，从而实现液晶调光器件模糊与透明、有色与无色的调节，在车窗玻璃，家居玻璃窗等方有着良好的应用前景。

Description

一种电响应的液晶调光器件 技术领域
本发明涉及建筑家居生活领域，尤其是涉及一种电响应的液晶调光器件。
背景技术
为了实现保护隐私与采光的平衡，一般会采用窗帘、百叶窗或镀膜等较传统的方式，其中镀膜玻璃可以很好的阻断可见光，但镀膜玻璃在光强较低的情况下无法很好的保护隐私，一旦镀膜成型就无法根据需要改变光学性能，且色彩较为单一。
基于液晶的智能玻璃可以根据需要调节光的透过与反射、散射等光学性能，且可以通过掺杂染料等物质获得较丰富的色彩，以染料掺杂彩色智能窗为例，通过外接电压控制液晶分子的转动来带动染料分子排列方式的改变，实现对阳光的透过或吸收，以满足人们的需求。但染料分子在紫外光的作用下会产生褪色等变化，影响染料掺杂智能窗的稳定性；由于染料分子无法达到理想的取向状态，因此在染料掺杂智能窗在透明状态时染料分子仍然存在吸收行为，使智能窗无法达到无色透明的状态。
发明内容
针对现有技术的不足，本发明所要解决的技术问题是提供一种电响应的液晶调光器件，能够在一定程度上可代替窗帘的作用，解决镀膜玻璃局限性且未使用染料，解决了染料的局限性。
本发明所采取的技术方案是：
本发明提供一种电响应的液晶调光器件，包括依次设置的透光导电基板一、聚合物网络稳定液晶层一、正性液晶层、聚合物网络稳定液晶层二和透光导电基板二，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二由液晶混合物经紫外光固化后制得，所述液晶混合物包括正性液晶、手性掺杂剂、光引发剂和可光聚合的液晶单体，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二反射偏振方向相同的圆偏振光。在紫外光下，可聚合的液晶单体在手性掺杂剂和光引发剂的作用下，形成聚合物网络，正性液晶分散在所述聚合物网络中。
优选地，所述液晶混合物包括50～88.9质量份的正性液晶、8～25质量份的手性掺杂剂、0.1～5质量份的光引发剂和3～20质量份的液晶单体。
优选地，所述手性掺杂剂为左旋手性掺杂剂或右旋手性掺杂剂，所述左旋手性掺杂剂为S1011、S811中的至少一种，所述右旋手性掺杂剂为R1011、R811中的至少一种。
优选地，所述液晶单体为HCM008、HCM009中的至少一种。
优选地，还包括电源组件，所述电源组件与所述透光导电基板一、透光导电基板二电性连接。
进一步地，所述电源组件包括交流电源和串联在所述交流电源上的电压控制器。
优选地，所述聚合物网络稳定液晶层一和聚合物网络稳定液晶层 二的厚度为5～100μm。
优选地，所述正性液晶层的厚度为5～50μm。
本发明的有益效果是：
相较于液晶分散于聚合物网络的单一设置方式，本发明的电响应的液晶调光器件采用聚合物网络稳定液晶层一、正性液晶层和聚合物网络稳定液晶层二相结合的方式，在未施加电压时能够达到对某一波段的圆偏振光全反射的目的，此时液晶调光器件呈现深色透明状态，施加电压后，能够改变聚合物网络稳定液晶层和正性液晶层中的正性液晶的排向，通过改变接入电压的大小来驱动各层内的正性液晶在不同状态之间转换，从而调节对光的反射、散射或透过，致使所述液晶调光器件的状态按照深色透明、浅色透明、无色不透明、无色透明的顺序依次变化，进而实现液晶调光器件模糊与透明的调节，避免了单一设置方式无法改变器件颜色深浅的问题，在车窗玻璃，家居玻璃窗等方有着良好的应用前景。
附图说明
图1为本发明电响应的液晶调光器件的结构示意图；
图2为在未接电压状态下电响应的液晶调光器件的示意图；
图3为电响应的液晶调光器件为浅色透明状态时的示意图；
图4为电响应的液晶调光器件为无色不透明状态时的示意图；
图5为电响应的液晶调光器件为无色透明状态时的示意图。
具体实施方式
以下将结合实施例对本发明的构思及产生的技术效果进行清楚、 完整地描述，以充分地理解本发明的目的、特征和效果。显然，所描述的实施例只是本发明的一部分实施例，而不是全部实施例，基于本发明的实施例，本领域的技术人员在不付出创造性劳动的前提下所获得的其他实施例，均属于本发明保护的范围。
实施例1
参见图1，本实施例提供一种电响应的液晶调光器件，包括依次设置的透光导电基板一10、聚合物网络稳定液晶层一20、正性液晶层3、聚合物网络稳定液晶层二21和透光导电基板二11，所述聚合物网络稳定液晶层一20和所述聚合物网络稳定液晶层二21由液晶混合物经紫外光固化制得，所述液晶混合物包括正性液晶HTW138200-100、手性掺杂剂S1011、光引发剂Irgacure651和可光聚合的液晶单体HCM009，所述聚合物网络稳定液晶层一20和所述聚合物网络稳定液晶层二21反射偏振方向相同的圆偏振光。
本实施例还提供一种上述电响应的液晶调光器件的制备方法，包括以下步骤：在黄光环境下，取15质量份的可聚合单体HCM009，9质量份的左旋手性掺杂剂S1011，0.5质量份的光引发剂Irgacure651，75.5质量份的正性液晶HTW138200-100置于棕色瓶中，在60℃下搅拌2小时，制成液晶混合物。在黄光条件下，将液晶混合物，刮涂棒和干净的透光导电玻璃基板加热到50℃，利用刮涂棒在基板上刮涂液晶混合物，刮涂的液晶混合物的厚度为15μm，利用200W功率的紫外光光源固化15min使液晶混合物中的可聚合液晶单体发生聚合反应形成聚合物网络稳定液晶层。待涂覆有聚合物网络稳定液晶层的 导电玻璃基板降温至室温后，将相同的两个上述导电玻璃基板置于正己烷或环己烷中浸泡48小时，去除未反应的液晶分子和手性掺杂剂，然后置于真空干燥箱中60摄氏度干燥2小时，去除正己烷。将相同的两个附着有聚合物网络稳定液晶层的导电玻璃基板以有聚合物网络稳定液晶层的一面作为内表面，制成液晶盒，两块基板之间的间距为40μm，在70℃下将正性液晶HTW138200-100填充到上述液晶盒中后，将液晶盒自然降温至室温，制备得到电响应的液晶调光器件。
上述可聚合液晶单体HCM009(购于江苏和成显示科技股份有限公司)的化学结构式为
Figure PCTCN2018109633-appb-000001
左旋手性掺杂剂S1011(购于北京八亿时空液晶科技股份有限公司)的结构式
Figure PCTCN2018109633-appb-000002
光引发剂Irgacure-651(购于希恩思)的结构式为：
Figure PCTCN2018109633-appb-000003
参见图2(图中设置虚框线的目的仅为清晰地区分聚合物网络稳定液晶层一、聚合物网络稳定液晶层网络稳定液晶二和正性液晶层)，在紫外光下，液晶混合物中的可聚合的液晶单体在手性掺杂剂和光引发剂的作用下形成聚合物网络4，正性液晶5分散在所述聚合物网络4中，在未施加电压时，分布在聚合物网络稳定液晶层一(图中A区域)和聚合物网络稳定液晶层二(图中C区域)中的正性液晶5在聚合物网络4的作用下呈分子长轴平行于基板的螺旋结构排列，能够反射偏振方向相同的圆偏振光(可以反射左旋偏振光或均可反射右旋偏振光)，在未通电状态下分布在聚合物网络稳定液晶层一和聚合物网络稳定液晶层二中的正性液晶的反射峰位于可见光波段，所述反射峰的位置由液晶混合物中手性掺杂剂的浓度决定，通过改变手性掺杂剂的浓度能够改变液晶调光器件的反射波段。本实施例中使用的是左旋手性掺杂剂，因此聚合物网络稳定液晶层一和聚合物网络稳定液晶层二均反射左旋偏振光，处于聚合物网络稳定液晶层一和聚合物网络稳定液晶层二中间的正性液晶层(图中B区域)能够将右旋偏振光转换成左旋偏振光，将左旋偏振光转换为右螺旋偏振光，当阳光射入时，对于特定波段的圆偏振光，聚合物网络稳定液晶层一能够将其中的左旋偏振光反射，透过右旋偏振光，正性液晶层将透过聚合物网络稳定液晶层一的右旋偏振光转换成左旋偏振光，后被聚合物网络稳定液晶层二反射，从而达到对某一波段的圆偏振光全反射的目的，此时液晶调光器件呈现深色透明状态。
施加电压后，通过改变接入电压的大小，所述分布在聚合物网 络稳定液晶层一和聚合物网络稳定液晶层二内的正性液晶可以在分子长轴平行于基板的螺旋结构排列、焦锥相排列和分子长轴垂直于基板的排列这三种排列之间相互转换；所述分布在正性液晶层的正性液晶可以在分子长轴平行于基板的排列和分子长轴垂直于基板的排列之间相互转换。
参见图3，当外接电压较小时，由于正性液晶层(图中B区域)的正性液晶分子转为垂直于基板的排列方式，无法将左旋偏振光转换为右旋偏振光，将右旋偏振光转换为左旋偏振光，因此智能窗只能反射某一波段的左旋偏振光，此时液晶调光器件为浅色透明状态。
参见图4，当外接电压继续增大，分布在聚合物网络稳定液晶层一(图中A区域)和聚合物网络稳定液晶层二(图中C区域)内的正性液晶分子的排列方式转换为焦锥相排列，此时聚合物网络稳定液晶层一和聚合物网络稳定液晶层二对可见光具有强烈的散射作用，此时液晶调光器件为无色不透明状态。
参见图5，当外接电压足够大时，液晶调光器件内所有小分子液晶均转换为垂直于玻璃基板的排列方式，对光的透过没有影响，此时液晶调光器件为无色透明状态。
实施例2
本实施例提供一种电响应的液晶调光器件，包括依次设置的透光导电基板一、聚合物网络稳定液晶层一、正性液晶层、聚合物网络稳定液晶层二和透光导电基板二，所述聚合物网络稳定液晶层一和聚合 物网络稳定液晶层二的厚度为100μm，正性液晶层的厚度为5μm，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二由液晶混合物经紫外光固化制得，所述液晶混合物包括88.9质量份的正性液晶E7、25质量份的右旋手性掺杂剂R811、0.1质量份的光引发剂Irgacure819和3质量份的可光聚合的液晶单体HCM008，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二反射右旋偏振光。
上述可聚合液晶单体HCM008(购于江苏和成显示科技股份有限公司)的化学结构式为
Figure PCTCN2018109633-appb-000004
左旋手性掺杂剂R811(购于北京八亿时空液晶科技股份有限公司)，其结构式为：
Figure PCTCN2018109633-appb-000005
光引发剂Irgacure-819(购于希恩思)的结构式为：
Figure PCTCN2018109633-appb-000006
实施例3
本实施例提供一种电响应的液晶调光器件，包括依次设置的透光导电基板一、聚合物网络稳定液晶层一、正性液晶层、聚合物网络稳定液晶层二和透光导电基板二，所述聚合物网络稳定液晶层一和聚合物网络稳定液晶层二的厚度为5μm，正性液晶层的厚度为50μm，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二由液晶混合物经紫外光固化制得，所述液晶混合物包括80质量份的正性液晶E7、12质量份的左旋手性掺杂剂S811、3质量份的光引发剂Irgacure819和10质量份的可光聚合的液晶单体HCM008，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二反射左旋偏振光。

Claims (8)

  1. 一种电响应的液晶调光器件，其特征在于，包括依次设置的透光导电基板一、聚合物网络稳定液晶层一、正性液晶层、聚合物网络稳定液晶层二和透光导电基板二，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二由液晶混合物经紫外光固化制得，所述液晶混合物包括正性液晶、手性掺杂剂、光引发剂和可光聚合的液晶单体，所述聚合物网络稳定液晶层一和所述聚合物网络稳定液晶层二反射偏振方向相同的圆偏振光。
  2. 根据权利要求1所述的电响应的液晶调光器件，其特征在于，所述液晶混合物包括50～88.9质量份的正性液晶、8～25质量份的手性掺杂剂、0.1～5质量份的光引发剂和3～20质量份的液晶单体。
  3. 根据权利要求1或2所述的电响应的液晶调光器件，其特征在于，所述手性掺杂剂为左旋手性掺杂剂或右旋手性掺杂剂，所述左旋手性掺杂剂为S1011、S811中的至少一种，所述右旋手性掺杂剂为R1011、R811中的至少一种。
  4. 根据权利要求1或2所述的电响应的液晶调光器件，其特征在于，所述液晶单体为HCM008、HCM009中的至少一种。
  5. 根据权利要求1所述的电响应的液晶调光器件，其特征在于，还包括电源组件，所述电源组件与所述透光导电基板一、透光导电基板二电性连接。
  6. 根据权利要求5所述的电响应的液晶调光器件，其特征在于，所述电源组件包括交流电源和串联在所述交流电源上的电压控制 器。
  7. 根据权利要求1所述的电响应的液晶调光器件，其特征在于，所述聚合物网络稳定液晶层一和聚合物网络稳定液晶层二的厚度为5～100μm。
  8. 根据权利要求1所述的电响应的液晶调光器件，其特征在于，所述正性液晶层的厚度为5～50μm。
PCT/CN2018/109633 2018-04-18 2018-10-10 一种电响应的液晶调光器件 WO2019200851A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/498,740 US10901278B2 (en) 2018-04-18 2018-10-10 Electroresponsive liquid crystal dimming device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810350644.1 2018-04-18
CN201810350644.1A CN108761945B (zh) 2018-04-18 2018-04-18 一种电响应的液晶调光器件

Publications (1)

Publication Number Publication Date
WO2019200851A1 true WO2019200851A1 (zh) 2019-10-24

Family

ID=64011012

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/109633 WO2019200851A1 (zh) 2018-04-18 2018-10-10 一种电响应的液晶调光器件

Country Status (3)

Country Link
US (1) US10901278B2 (zh)
CN (1) CN108761945B (zh)
WO (1) WO2019200851A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110275352A (zh) * 2019-06-28 2019-09-24 武汉华星光电技术有限公司 背光模块及其透光率的调控方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109856880B (zh) * 2019-02-27 2021-12-10 京东方科技集团股份有限公司 反射器及驱动方法、显示面板及驱动方法
CN111880326B (zh) * 2020-08-17 2023-06-27 京东方科技集团股份有限公司 一种防窥显示装置及其制备方法、显示装置
CN112147808B (zh) * 2020-10-23 2023-09-01 京东方科技集团股份有限公司 一种智能玻璃以及制备方法、显示装置
WO2022125627A1 (en) * 2020-12-08 2022-06-16 Kent State University Patterned waveguide liquid crystal display

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080106689A1 (en) * 2004-08-31 2008-05-08 Iichiro Inoue Display Element And Display Device
CN101566755A (zh) * 2009-05-27 2009-10-28 北京科技大学 一种利用聚合物稳定液晶材料制备光增亮膜的方法
US20100141859A1 (en) * 2008-12-04 2010-06-10 Hong-Jo Park Display device including uv-absorbing filter
CN103242863A (zh) * 2013-04-19 2013-08-14 北京京东方光电科技有限公司 液晶复合材料、显示面板、显示装置及显示面板制造方法
CN104391406A (zh) * 2014-12-01 2015-03-04 昆山龙腾光电有限公司 有机发光二极管显示装置
CN106646986A (zh) * 2017-02-10 2017-05-10 华南师范大学 一种电响应红外反射器件及其制备方法
CN107346084A (zh) * 2017-07-21 2017-11-14 华南师范大学 一种全反射红外反射器件及其制备方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566758A (en) * 1983-05-09 1986-01-28 Tektronix, Inc. Rapid starting, high-speed liquid crystal variable optical retarder
US4566728A (en) * 1984-07-13 1986-01-28 Cars & Concepts, Inc. Hatchback vehicle body including hatch having opening with soft top convertible closure
EP0426291A3 (en) * 1989-10-31 1992-06-17 University Of Hawaii Colour liquid crystal display
US5695682A (en) * 1991-05-02 1997-12-09 Kent State University Liquid crystalline light modulating device and material
US6559903B2 (en) * 1991-11-27 2003-05-06 Reveo, Inc. Non-absorptive electro-optical glazing structure employing composite infrared reflective polarizing filter
JP3147156B2 (ja) * 1997-11-18 2001-03-19 富士ゼロックス株式会社 表示記憶媒体、画像書き込み方法および画像書き込み装置
US6317189B1 (en) * 1998-12-29 2001-11-13 Xerox Corporation High-efficiency reflective liquid crystal display
US6885414B1 (en) * 2000-09-29 2005-04-26 Kent Optronics, Inc. Optical router switch array and method for manufacture
WO2006132361A1 (ja) * 2005-06-10 2006-12-14 Sharp Kabushiki Kaisha 表示素子および表示装置
CN101218469A (zh) * 2005-07-08 2008-07-09 皇家飞利浦电子股份有限公司 用于产生具有电可变散射图案的光模块及其作为多用途光的使用
TWI319930B (en) * 2006-11-10 2010-01-21 Multiplex dc voltage regulation output circuit
WO2018049292A1 (en) * 2016-09-09 2018-03-15 Kent State University Waveguide liquid crystal display

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080106689A1 (en) * 2004-08-31 2008-05-08 Iichiro Inoue Display Element And Display Device
US20100141859A1 (en) * 2008-12-04 2010-06-10 Hong-Jo Park Display device including uv-absorbing filter
CN101566755A (zh) * 2009-05-27 2009-10-28 北京科技大学 一种利用聚合物稳定液晶材料制备光增亮膜的方法
CN103242863A (zh) * 2013-04-19 2013-08-14 北京京东方光电科技有限公司 液晶复合材料、显示面板、显示装置及显示面板制造方法
CN104391406A (zh) * 2014-12-01 2015-03-04 昆山龙腾光电有限公司 有机发光二极管显示装置
CN106646986A (zh) * 2017-02-10 2017-05-10 华南师范大学 一种电响应红外反射器件及其制备方法
CN107346084A (zh) * 2017-07-21 2017-11-14 华南师范大学 一种全反射红外反射器件及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110275352A (zh) * 2019-06-28 2019-09-24 武汉华星光电技术有限公司 背光模块及其透光率的调控方法

Also Published As

Publication number Publication date
CN108761945A (zh) 2018-11-06
US20200333647A1 (en) 2020-10-22
US10901278B2 (en) 2021-01-26
CN108761945B (zh) 2021-05-14

Similar Documents

Publication Publication Date Title
WO2019200851A1 (zh) 一种电响应的液晶调光器件
CN107346084B (zh) 一种全反射红外反射器件及其制备方法
WO2019205501A1 (zh) 一种多稳态电响应智能窗及其制备方法
TWI619971B (zh) 用於調節能量路徑之裝置
CN106526932B (zh) 一种基于减色混合法的调光玻璃
CN108663866B (zh) 一种包含宾主液晶组合物的调光装置
US20080143896A1 (en) Window shading system
CN108363255B (zh) 一种电致变色膜材料及其制备的电致变色膜器件
KR20160071459A (ko) 광 유입 조절 장치
CN109917594B (zh) 一种隐私保护红外反射智能窗及其制备方法
WO2018000838A1 (zh) 一种基于电响应的反式调光玻璃及其制备方法
CN108603116B (zh) 用于调节光入射的装置
CN109709704B (zh) 调光玻璃及其制备方法
CN109828403B (zh) 一种电响应反射器件及其制备方法
CN104090323A (zh) 一种电控散射偏光片的构造和应用
CN113777841A (zh) 一种反射器及其制备方法与应用
CN113311625A (zh) 一种聚合物稳定胆甾相液晶变色玻璃及其制备方法和应用
CN109343245B (zh) 一种红外反射器件及其制备方法
CN113195683A (zh) 用于切换元件的切换层
CN112433403A (zh) 一种光调制装置
CN108957800B (zh) 一种红外反射器件及其制备方法
CN108319059B (zh) 一种电响应的红外反射器件
WO2023065925A1 (zh) 一种液晶调光器件
Taheri et al. Guest-host liquid crystal devices for adaptive window application
CN113589573B (zh) 一种感知环境光线变化的智能液晶调光膜

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18915452

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18915452

Country of ref document: EP

Kind code of ref document: A1