WO2020206782A1 - 电致光透过率变化结构及其制作方法 - Google Patents

电致光透过率变化结构及其制作方法 Download PDF

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Publication number
WO2020206782A1
WO2020206782A1 PCT/CN2019/085971 CN2019085971W WO2020206782A1 WO 2020206782 A1 WO2020206782 A1 WO 2020206782A1 CN 2019085971 W CN2019085971 W CN 2019085971W WO 2020206782 A1 WO2020206782 A1 WO 2020206782A1
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liquid crystal
polymer
electro
transmittance change
optical transmittance
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French (fr)
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崔巍
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal 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
    • G02F1/133—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
    • G02F1/137—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

Definitions

  • This application relates to an electro-induced light transmittance change film technology, in particular to an electro-induced light transmittance change structure and a manufacturing method thereof.
  • Polymer-dispersed liquid crystal (PDLC) films are widely used in electro-induced light transmittance change films to realize transparent display.
  • PDLC forms a porous polymer structure to make the liquid crystal uniformly dispersed in the holes.
  • the PDLC film When the power is not applied, the PDLC film will scatter light due to the tilt of the liquid crystal, and the PDLC film will appear opaque; when power is applied, the liquid crystal will be deflected and arranged in one direction, and the PDLC film will transmit light.
  • PDLC film requires a higher driving voltage, which is often higher than the human body safety voltage of 36 volts. This not only poses a great safety hazard, but also increases energy consumption.
  • the embodiments of the present application provide an electro-optical transmittance change structure and a manufacturing method thereof, so as to solve the technical problems of excessively high driving voltage required by the existing PDLC film, which has potential safety hazards and high energy consumption.
  • the embodiment of the application provides an electro-optical transmittance change structure, which includes:
  • the second substrate is arranged opposite to the first substrate and forms a containing cavity with the first substrate;
  • the polymer network includes a plurality of polymers, and the polymers are formed by polymerizing liquid crystal polymer monomers through two-photon laser writing technology;
  • the pore structure also includes a non-liquid crystal polymer formed by polymerizing a non-liquid crystal polymer monomer, and the non-liquid crystal polymer monomer and the polymer grid are irradiated with ultraviolet rays to form the Hole structure.
  • the preset angle of each polymer is equal to the preset angle of the polymer network.
  • the predetermined angle is 90°.
  • the polymer is formed by polymerization under the action of an electric field.
  • the embodiments of the present application also provide an electro-induced light transmittance change structure, which includes:
  • the second substrate is arranged opposite to the first substrate and forms a containing cavity with the first substrate;
  • a hole structure arranged in the containing cavity including a polymer network, the polymer network including a plurality of polymers, each of the polymers having a preset angle;
  • the tilt angle of the cholesteric liquid crystal closer to the polymer network is closer to the preset angle; when the electro-optical transmittance When the changed structure is powered on, the cholesteric liquid crystals close to the polymer network transfer the tilting direction to the cholesteric liquid crystals farther away, achieving the purpose of reducing the driving voltage and saving energy consumption.
  • the polymer is formed by polymerizing liquid crystal polymer monomers through two-photon laser writing technology.
  • the polymer is formed by polymerization under the action of an electric field.
  • the preset angle of each polymer is the same.
  • the predetermined angle is 90°.
  • the hole structure further includes a non-liquid crystal polymer, the non-liquid crystal polymer is formed by polymerizing a non-liquid crystal polymer monomer, and the non-liquid crystal polymer monomer The body and the polymer mesh are irradiated with ultraviolet rays to form the hole structure.
  • This application also relates to a manufacturing method of the electro-induced light transmittance change structure, which includes:
  • An electro-optical transmittance change basic structure includes a first substrate, a second substrate, and a receiving cavity formed between the first substrate and the second substrate , And liquid crystal polymer monomers, non-liquid crystal polymer monomers and cholesteric liquid crystals located in the containing cavity;
  • the polymer network and the non-liquid crystal polymer monomer are polymerized to form a pore structure, and the cholesteric liquid crystal is located in the pore structure to form the electroluminescent transmittance change structure.
  • the said liquid crystal type polymerized monomer is polymerized to form a polymer with a preset angle, and the preset angle is consistent with the target angle,
  • a plurality of the aggregates form the aggregate network, including:
  • the laser is used to irradiate the electro-induced light transmittance change basic structure, so that the liquid crystal type polymerized monomers irradiated by each beam of the laser are polymerized to form a polymer with the predetermined angle, and Each of the polymers forms the polymer network.
  • the predetermined angle of each polymer is the same.
  • the polymerizing the polymer network and the non-liquid crystal polymer monomer to form a pore structure includes:
  • the polymer network and the non-liquid crystal polymer monomer are irradiated with ultraviolet rays, so that the non-liquid crystal polymer monomer is polymerized to form a non-liquid crystal polymer, the non-liquid crystal polymer and the polymer
  • the network aggregates to form the hole structure.
  • the incident direction of the laser light is perpendicular to the plane of the electro-optical transmittance change basic structure.
  • the electro-optical transmittance change structure and the manufacturing method of the present application adopt the arrangement of the polymer network of the hole structure, when the electro-optical transmittance change structure When the power is not applied, the tilt angle of the cholesteric liquid crystal closer to the polymer network is closer to the preset angle; when the electroluminescent transmittance change structure is energized, the cholesteric liquid crystal near the polymer will transfer the tilting direction to The farther cholesteric liquid crystal achieves the purpose of lowering the driving voltage and saving energy consumption; it solves the technical problems of excessively high driving voltage required by the existing PDLC film, which has hidden safety hazards and large energy consumption.
  • FIG. 1 is a schematic structural diagram of an electro-optical transmittance change structure in an unpowered state according to an embodiment of the application;
  • FIG. 2 is a schematic structural diagram of the electro-optical transmittance change structure in the power-on state of the embodiment of the application;
  • FIG. 3 is a schematic diagram of the working structure of the two-photon laser writing technology of the electro-optical transmittance change basic structure according to the embodiment of the application;
  • FIG. 4 is a flowchart of a method for manufacturing an electro-optical transmittance change structure according to an embodiment of the application
  • FIG. 5 is another flowchart of the manufacturing method of the electro-optical transmittance change structure according to the embodiment of the application.
  • FIG. 1 is a schematic diagram of the structure of the electro-optical transmittance change structure in an unpowered state according to an embodiment of the application; The schematic diagram of the power-on state.
  • the electro-optical transmittance change structure 100 of the embodiment of the present application includes a first substrate 11, a second substrate 12, a hole structure 13 and a cholesteric liquid crystal 14.
  • the second substrate 12 is disposed opposite to the first substrate 11 and forms a receiving cavity 15 with the first substrate 11.
  • the hole structure 13 is arranged in the containing cavity 15.
  • the pore structure 13 includes a polymer network.
  • the aggregate network includes a plurality of aggregates 131. Meanwhile, each aggregate 131 has a preset angle. The predetermined angle is defined as the angle between the extension direction of the polymer 131 and the plane where the first substrate 11 is located.
  • the cholesteric liquid crystal 14 is located in the hole structure 13.
  • the tilt angle of the cholesteric liquid crystal 14 closer to the polymer network is closer to the aforementioned preset angle.
  • the electro-optical transmittance change structure 100 is powered on, the cholesteric liquid crystal 14 close to the polymer network transfers the tilting direction to the cholesteric liquid crystal 14 farther away, so as to reduce the driving voltage and save energy.
  • the electro-optical transmittance change structure 100 is energized, that is, to apply a sufficiently high electric field intensity to the electro-optical transmittance change structure 100 to promote the disintegration of the spiral structure of the cholesteric liquid crystal 14, and the cholesteric liquid crystal 14 phases
  • the change is finally transformed into nematic liquid crystals aligned along the direction of the electric field.
  • the tilt angle of the cholesteric liquid crystal 14 closer to the polymer network is closer to the preset angle, that is, the helix axis of the cholesteric liquid crystal 14 closer to the polymer network is perpendicular to the direction of the polymer network.
  • the tilt direction of the cholesteric liquid crystal 14 closer to the polymer network is closer to the direction of the electric field, so that the closer to the polymer network is The more the steroidal liquid crystal 14 has an inclination angle that is closer to the direction of the electric field, the greater the electric field strength is not required to drive the cholesteric liquid crystal 14 to invert.
  • the inclination angle of the cholesteric liquid crystal 14 is A
  • the light whose incident angle is A can pass through the electro-optical transmittance change structure 100.
  • the inclination angle of the cholesteric liquid crystal 14 is 90°, that is, when the long axis of the cholesteric liquid crystal 14 is perpendicular to the plane where the first substrate 11 is located, the light transmission voltage perpendicular to the plane where the first substrate 11 is located is realized.
  • the light transmittance change structure 100 is realized.
  • the polymer network formed by the polymer 131 has an alignment effect on the cholesteric liquid crystal 14, so the closer to the polymer network the tilt angle of the cholesteric liquid crystal 14 is closer to the preset angle of the polymer network. Therefore, when a voltage is applied to the electroluminescent transmittance change structure 100, the cholesteric liquid crystal 14 has an inclination angle close to the target angle (the angle that allows light to pass) in advance, so that a large voltage is not required to drive the cholesteric phase. The liquid crystal 14 tilts and rotates to reduce energy consumption.
  • the polymer 131 is formed by polymerizing liquid crystal polymer monomers through two-photon laser writing technology. Each laser beam can act to form a polymer 131, and the polymerization extension direction of the polymer 131 is the same as the incident direction of the laser, that is, the liquid crystal type The polymerized monomer is polymerized along the incident direction of the laser light. Therefore, referring to FIG.
  • this embodiment takes the laser vertically irradiating the first substrate 11 as an example for description, but it is not limited to this.
  • the two-photon laser writing technology is used to make the polymerized monomers undergo directional polymerization to form the polymer 131.
  • the incident direction of the laser has the effect of setting the alignment direction between the polymers 131 to achieve the purpose of aligning the cholesteric liquid crystal 14.
  • the preset angle of each polymer body 131 is the same, so that the entire polymer body network is arranged in the same direction so as to pass light rays with the same incident angle.
  • the preset angle is 90°, which can transmit light perpendicular to the plane where the electro-optical transmittance change structure 100 is located.
  • the preset angle can also be other, which can be set according to specific conditions.
  • the hole structure 13 further includes a non-liquid crystal polymer 132.
  • the non-liquid crystal polymer 132 is formed by polymerizing non-liquid crystal polymer monomers. Among them, the non-liquid crystal polymer monomers and polymer meshes are irradiated with ultraviolet rays to form a hole structure 13.
  • the hole structure 13 is used to accommodate the cholesteric liquid crystal 14, and the dispersed cholesteric liquid crystal 14 is confined in each hole of the hole structure 13, so that a certain amount of cholesteric liquid crystal is uniformly distributed in each hole. 14.
  • the non-liquid crystal type polymer 132 functions to support the first substrate 11 and the second substrate 12. Among them, under the irradiation of ultraviolet rays, the non-liquid crystal type polymerized monomer is induced to polymerize and solidify, thereby forming a non-liquid crystal type polymer 132, and the non-liquid crystal type polymer 132 is filled between the first substrate 11 and the second substrate 12. Therefore, the function of supporting the first substrate 11 and the second substrate 12 is achieved. That is, the arrangement of the non-liquid crystal polymer 132 improves the stability of this embodiment.
  • FIG. 4 is a flowchart of a method for manufacturing an electro-optical transmittance change structure according to an embodiment of the application
  • FIG. 5 is a method for manufacturing an electro-optical transmittance change structure according to an embodiment of the application Another flow chart.
  • the manufacturing method of the electro-optical transmittance change structure 100 of the embodiment of the present application includes:
  • the electro-optical transmittance change basic structure 10 includes a first substrate 11, a second substrate 12, a receiving cavity 15 formed between the first substrate 11 and the second substrate 12, and the receiving cavity 15 Liquid crystal type polymerizable monomer 1311, non-liquid crystal type polymerized monomer 1321 and cholesteric liquid crystal 14 within;
  • the polymer network can align the cholesteric liquid crystal 14.
  • the preset angle of the polymer network is consistent with the target angle of the cholesteric liquid crystal 14 (the angle that allows light to pass through), that is, the closer the polymer network is, the closer the tilt angle of the cholesteric liquid crystal 14 is to the target of the cholesteric liquid crystal 14 angle.
  • applying a smaller voltage can make the cholesteric liquid crystal 14 complete the flip to the target angle.
  • step S1 provide an electro-optical transmittance change basic structure 10.
  • the electro-optical transmittance change basic structure 10 includes a first substrate 11, a second substrate 12, a receiving cavity 15 formed between the first substrate 11 and the second substrate 12, and the receiving cavity 15
  • the liquid crystal polymer monomer 1311, the non-liquid crystal polymer monomer 1321 and the cholesteric liquid crystal 14 are contained therein.
  • step S2 the target angle of the cholesteric liquid crystal 14 is set.
  • the target angle of the cholesteric liquid crystal 14 depends on the direction of the electric field applied to the electro-optical transmittance change structure 100. Specifically, under a sufficiently strong electric field intensity, the orientation direction of the cholesteric liquid crystal 14 is consistent with the direction of the electric field.
  • the angle of incident light must be consistent with the target angle of the cholesteric liquid crystal 14.
  • the target angle of the cholesteric liquid crystal 14 needs to be set to A, and the direction of the electric field must also satisfy the cholesteric liquid crystal 14 to achieve the A target angle.
  • the light perpendicular to the electro-optical transmittance change structure 100 needs to pass through the electro-optical transmittance change structure 100, then the target angle of the cholesteric liquid crystal 14 needs to be set to 90°, That is, after the electric field is added, the orientation of the liquid crystal molecules of the cholesteric liquid crystal 14 is perpendicular to the electroluminescent transmittance change structure 100.
  • step S3 the liquid crystal polymer monomer 1311 is polymerized to form a polymer 131 with a preset angle, the preset angle is consistent with the target angle, and a plurality of polymers 131 form a polymer network.
  • step S3 includes:
  • the liquid crystal polymer monomer 1311 at each laser irradiation position is polymerized to form a polymer 131 with a preset angle, and multiple polymers form a polymer network .
  • the purpose of applying voltage to the electroluminescent transmittance change base structure 10 is to arrange the liquid crystal polymer monomers 1311 in the direction of the electric field at a sufficiently strong electric field strength to form a liquid crystal polymer monomer 1311 with a vertical structure.
  • the liquid crystal polymer monomer 1311 of the vertical structure is polymerized.
  • a polymer 131 with a vertical structure is formed. That is, the preset angle of the aggregate 131 is 90°, so that the preset angle is consistent with the target angle.
  • the multiple polymers 131 form a polymer network.
  • the electro-optical transmittance change base structure 10 Since the electro-optical transmittance change base structure 10 generates an electric field when a voltage is applied, the orientation of all the liquid crystal polymer monomers 1311 is the same.
  • the laser also uses a vertical laser, so the preset angle of each polymer 131 is the same and is the same as the target angle.
  • the tilt angle of the cholesteric liquid crystal 14 closer to the polymer network is closer to the target angle of the cholesteric liquid crystal 14. Furthermore, applying a smaller voltage can make the cholesteric liquid crystal 14 complete the flip to the target angle.
  • step S4 the polymer network and the non-liquid crystal polymer monomer 1321 are polymerized to form the pore structure 13.
  • the polymer network and the non-liquid crystal polymer monomer 1321 are irradiated with ultraviolet rays, so that the non-liquid crystal polymer monomer 1321 is polymerized to form a non-liquid crystal polymer 132, and the non-liquid crystal polymer 132 and the polymer network polymerize to form a hole structure.
  • the cholesteric liquid crystal 14 is dispersed in the accommodating cavity 15 and does not polymerize under the irradiation of ultraviolet rays, so that the hole structure 13 wraps the cholesteric liquid crystal 14. That is, the hole structure 13 divides the cholesteric liquid crystal 14 into multiple parts, and each part is correspondingly distributed in each hole of the hole structure 13.
  • the non-liquid crystal type polymer 132 functions to support the first substrate 11 and the second substrate 12.
  • the electro-optical transmittance change structure and the manufacturing method of the present application adopt the arrangement of the polymer network of the hole structure, when the electro-optical transmittance change structure When the power is not applied, the tilt angle of the cholesteric liquid crystal closer to the polymer network is closer to the preset angle; when the electroluminescent transmittance change structure is energized, the cholesteric liquid crystal near the polymer will transfer the tilting direction to The farther cholesteric liquid crystal achieves the purpose of lowering the driving voltage and saving energy consumption; it solves the technical problems of excessively high driving voltage required by the existing PDLC film, which has hidden safety hazards and large energy consumption.

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Abstract

一种电致光透过率变化结构（100）及其制作方法，其包括胆甾相液晶（14）和孔洞结构（13），孔洞结构（13）包括聚合体网络。当电致光透过率变化结构（100）不加电时，越靠近聚合体网络的胆甾相液晶（14）的倾斜角度越接近预设角度；当电致光透过率变化结构（100）加电时，靠近聚合体的胆甾相液晶（14）将倾倒方向传递至较远的胆甾相液晶（14），达到降低驱动电压。

Description

电致光透过率变化结构及其制作方法 技术领域
本申请涉及一种电致光透过率变化膜技术，特别涉及一种电致光透过率变化结构及其制作方法。
 背景技术
聚合体分散液晶（Polymer-dispersed liquid crystal，PDLC）薄膜广泛应用于电致光透过率变化膜，进而用来实现透明显示。其中PDLC是通过形成多孔的聚合体结构，使液晶均匀地分散在孔洞里。当不加电时，由于液晶倾斜没有方向，所以PDLC膜会散射光线，从而PDLC膜呈现不透光状态；当加电时液晶会发生偏转朝一个方向排列，PDLC膜使光线透过。
但是PDLC膜有一个缺点就是需要驱动电压较高，经常高于36伏的人体安全电压，这不仅存在极大的安全隐患，也提高了能耗。
 技术问题
本申请实施例提供一种电致光透过率变化结构及其制作方法，以解决现有的PDLC膜需求的驱动电压过高，存在安全隐患和能耗较大的技术问题。
 技术解决方案
本申请实施例提供一种电致光透过率变化结构，其包括：
第一基板；
第二基板，与所述第一基板相对设置并与所述第一基板形成一容纳腔；
孔洞结构，设置在所述容纳腔内，所述孔洞结构包括聚合体网络，每个所述聚合体网络具有预设角度；以及
胆甾相液晶，位于所述孔洞结构内；
所述聚合体网络包括多个聚合体，所述聚合体由液晶型聚合单体通过双光子激光写入技术聚合形成；
所述孔洞结构还包括非液晶型聚合体，所述非液晶型聚合体由非液晶型聚合单体聚合形成，所述非液晶型聚合单体和所述聚合体网格通过紫外线照射形成所述孔洞结构。
在本申请的电致光透过率变化结构中，每个所述聚合体的预设角度等于所述聚合体网络的预设角度。
在本申请的电致光透过率变化结构中，所述预设角度为90°。
在本申请的电致光透过率变化结构中，所述聚合体在电场的作用下聚合形成。
本申请实施例还提供一种电致光透过率变化结构，其包括：
第一基板；
第二基板，与所述第一基板相对设置并与所述第一基板形成一容纳腔；
孔洞结构，设置在所述容纳腔内，所述孔洞结构包括聚合体网络，所述聚合体网络包括多个聚合体，每个所述聚合体具有预设角度；以及
胆甾相液晶，位于所述孔洞结构内；
当所述电致光透过率变化结构不加电时，越靠近所述聚合体网络的所述胆甾相液晶的倾斜角度越接近所述预设角度；当所述电致光透过率变化结构加电时，靠近所述聚合体网络的所述胆甾相液晶将倾倒方向传递至较远的所述胆甾相液晶，到达降低驱动电压，节省能耗的目的。
在本申请的电致光透过率变化结构中，所述聚合体由液晶型聚合单体通过双光子激光写入技术聚合形成。
在本申请的电致光透过率变化结构中，所述聚合体在电场的作用下聚合形成。
在本申请的电致光透过率变化结构中，每个所述聚合体的预设角度相同。
在本申请的电致光透过率变化结构中，所述预设角度为90°。
在本申请的电致光透过率变化结构中，所述孔洞结构还包括非液晶型聚合体，所述非液晶型聚合体由非液晶型聚合单体聚合形成，所述非液晶型聚合单体和所述聚合体网格通过紫外线照射形成所述孔洞结构。
本申请还涉及一种电致光透过率变化结构的制作方法，其包括：
提供一个电致光透过率变化基础结构，所述电致光透过率变化基础结构包括第一基板、第二基板、形成于所述第一基板和所述第二基板之间的容纳腔、以及位于所述容纳腔内的液晶型聚合单体、非液晶型聚合单体和胆甾相液晶；
设定胆甾相液晶的目标角度；
将所述液晶型聚合单体进行聚合形成具有预设角度的聚合体，所述预设角度与所述目标角度一致，多个所述聚合体形成所述聚合体网络；
将所述聚合体网络和所述非液晶型聚合单体进行聚合形成孔洞结构，所述胆甾相液晶位于所述孔洞结构中，形成所述电致光透过率变化结构。
在本申请的电致光透过率变化结构的制作方法中，所述将所述液晶型聚合单体进行聚合形成具有预设角度的聚合体，所述预设角度与所述目标角度一致，多个所述聚合体形成所述聚合体网络，包括：
提供一双光子写入设备；
将所述电致光透过率变化基础结构放入所述双光子写入设备中；
对所述电致光透过率变化基础结构施加电压；
调整所述双光子写入设备的激光的入射方向；
采用所述激光照射所述电致光透过率变化基础结构，使得被每一束所述激光照射处的所述液晶型聚合单体发生聚合形成一具有所述预设角度的聚合体，多个所述聚合体形成所述聚合体网络。
在本申请的电致光透过率变化结构的制作方法中，每一所述聚合体的预设角度相同。
在本申请的电致光透过率变化结构的制作方法中，所述将所述聚合体网络和所述非液晶型聚合单体进行聚合形成孔洞结构，包括：
采用紫外线照射所述聚合体网络和所述非液晶型聚合单体，使得所述非液晶型聚合单体发生之间聚合形成非液晶型聚合体，所述非液晶型聚合体和所述聚合体网络聚合形成所述孔洞结构。
在本申请的电致光透过率变化结构的制作方法中，所述激光的入射方向垂直于所述电致光透过率变化基础结构的所在平面。
 有益效果
相较于现有技术的电致光透过率变化膜，本申请的电致光透过率变化结构及其制作方法通过孔洞结构的聚合体网络的设置，当电致光透过率变化结构不加电时，越靠近聚合体网络的胆甾相液晶的倾斜角度越接近预设角度；当电致光透过率变化结构加电时，靠近聚合体的胆甾相液晶将倾倒方向传递至较远的胆甾相液晶，到达降低驱动电压，节省能耗的目的；解决了现有的PDLC膜需求的驱动电压过高，存在安全隐患和能耗较大的技术问题。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面对实施例中所需要使用的附图作简单的介绍。下面描述中的附图仅为本申请的部分实施例，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获取其他的附图。
图1为本申请实施例的电致光透过率变化结构处于未加电状态的结构示意图；
图2为本申请实施例的电致光透过率变化结构处于加电状态的结构示意图；
图3为本申请实施例的电致光透过率变化基础结构进行双光子激光写入技术的工作结构示意图；
图4为本申请实施例的电致光透过率变化结构的制作方法的流程图；
图5为本申请实施例的电致光透过率变化结构的制作方法的另一流程图。
 本发明的实施方式
请参照附图中的图式，其中相同的组件符号代表相同的组件。以下的说明是基于所例示的本申请具体实施例，其不应被视为限制本申请未在此详述的其它具体实施例。
请参照图1和图2，图1为本申请实施例的电致光透过率变化结构处于未加电状态的结构示意图；图2为本申请实施例的电致光透过率变化结构处于加电状态的结构示意图。
本申请实施例的电致光透过率变化结构100包括第一基板11、第二基板12、孔洞结构13和胆甾相液晶14。
具体的，第二基板12与第一基板11相对设置并与第一基板11形成一容纳腔15。
孔洞结构13设置在容纳腔15内。孔洞结构13包括聚合体网络。聚合体网络包括多个聚合体131。同时，每个聚合体131具有预设角度。其中预设角度的定义为聚合体131的延伸方向和第一基板11所在平面的夹角。
胆甾相液晶14位于孔洞结构13内。
当电致光透过率变化结构100不加电时，越靠近聚合体网络的胆甾相液晶14的倾斜角度越接近上述的预设角度。当电致光透过率变化结构100加电时，靠近聚合体网络的胆甾相液晶14将倾倒方向传递至较远的胆甾相液晶14，达到降低驱动电压，节省能耗的目的。
其中电致光透过率变化结构100加电，即为对电致光透过率变化结构100施加足够高的电场强度，促使胆甾相液晶14的螺旋结构解体，胆甾相液晶14发生相变最终转变为沿着电场方向一致排列的向列相液晶。
越靠近聚合体网络的胆甾相液晶14的倾斜角度越接近预设角度，即为越靠近聚合体网络的胆甾相液晶14的螺旋轴越垂直于聚合体网络的朝向方向。
当聚合体网络的朝向方向和电场的方向一致时，在不加电的情况下，越靠近聚合体网络的胆甾相液晶14的倾斜方向就越接近电场方向，使得越靠近聚合体网络的胆甾相液晶14越具有一个提前接近于电场方向的倾斜角度，进而不需要较大的电场强度即可驱动胆甾相液晶14翻转。
需要说明的是，在本实施例的电致光透过率变化结构100中，胆甾相液晶14的倾斜角为A，则入射角度为A的光线可透过电致光透过率变化结构100。比如，当胆甾相液晶14的倾斜角为90°，即胆甾相液晶14的长轴垂直于第一基板11所在的平面时，实现垂直于第一基板11所在的平面的光透过电致光透过率变化结构100。
而聚合体131形成的聚合体网络对胆甾相液晶14起到配向的作用，所以越接近聚合体网络的胆甾相液晶14的倾斜角度越接近聚合体网络的预设角度。因此当对电致光透过率变化结构100施加电压时，胆甾相液晶14由于提前具有接近与目标角度（允许光线通过的角度）的倾斜角度，从而不需要较大的电压驱动胆甾相液晶14倾斜转动，达到降低能耗的作用。
在实现本实施例的透光制程中，需先设定可以通过电致光透过率变化结构100的入射光的入射角度；然后形成与该入射角度一致的聚合体131，也就是聚合体131的预设角度等于该入射角度。其中，聚合体131由液晶型聚合单体通过双光子激光写入技术聚合形成，每束激光可作用形成一聚合体131，且聚合体131的聚合延伸方向和激光的入射方向一致，即液晶型聚合单体沿着激光的入射方向进行聚合。因此，请参照图3，本实施例以激光垂直照射第一基板11为例进行说明，但并不限于此。首先将电致光透过率变化基础结构放置在双光子写入设备的基板上，开启双光子激光，沿垂直于第一基板11所在平面的方向照射电致光透过率变化基础结构，并在电场的作用下诱导液晶型聚合单体沿着电场力的方向排列并发生聚合，形成一个个的聚合体131，而后多个聚合体131形成聚合体网络。在本实施例中采用双光子激光写入技术是为了使得聚合单体发生定向聚合形成聚合体131。而激光的入射方向起到设定聚合体131之间排列朝向的效果，以达到配向胆甾相液晶14的目的。
在本实施例中，每个聚合体131的预设角度相同，使得整个聚合体网络同向排列设置，以便通过入射角度相同的光线。可选的，预设角度为90°，可透过垂直于电致光透过率变化结构100所在平面的光线。当然预设角度也可以是其他，可根据具体情况设定。
在本实施例的电致光透过率变化结构100中，孔洞结构13还包括非液晶型聚合体132。非液晶型聚合体132由非液晶型聚合单体聚合而成。其中非液晶型聚合单体和聚合体网格通过紫外线照射形成孔洞结构13。其中，孔洞结构13用于容纳胆甾相液晶14，且将分散的胆甾相液晶14限定在孔洞结构13的一个个孔洞中，使得一个个的孔洞中均匀分布有一定数量的胆甾相液晶14。
所述非液晶型聚合体132起到支撑第一基板11和第二基板12的作用。其中，在紫外线的照射下，诱导非液晶型聚合单体产生聚合和固化，进而形成非液晶型聚合体132，而非液晶型聚合体132填充在第一基板11和第二基板12之间，故而达到支撑第一基板11和第二基板12的作用。即非液晶型聚合体132的设置提高了本实施例的稳定性。
请参照图4和图5，图4为本申请实施例的电致光透过率变化结构的制作方法的流程图；图5为本申请实施例的电致光透过率变化结构的制作方法的另一流程图。本申请实施例的一种电致光透过率变化结构100的制作方法，其包括：
S1：提供一个电致光透过率变化基础结构10。电致光透过率变化基础结构10包括第一基板11、第二基板12、形成于所述第一基板11和所述第二基板12之间的容纳腔15、以及位于所述容纳腔15内的液晶型聚合单体1311、非液晶型聚合单体1321和胆甾相液晶14；
S2：设定胆甾相液晶14的目标角度；
S3：将所述液晶型聚合单体1311进行聚合形成具有预设角度的聚合体131，所述预设角度与所述目标角度一致，多个所述聚合体131形成所述聚合体网络；
S4：将所述聚合体网络和所述非液晶型聚合单体1321进行聚合形成孔洞结构13，所述胆甾相液晶14位于所述孔洞结构13中，形成所述电致光透过率变化结构100。
本实施例通过形成聚合体网络，使聚合体网络对胆甾相液晶14起到配向的作用。聚合体网络的预设角度和胆甾相液晶14的目标角度（允许光线通过的角度）一致，即促使越靠近聚合体网络的胆甾相液晶14的倾斜角度越接近胆甾相液晶14的目标角度。进而施加较小的电压，便可使得胆甾相液晶14完成向目标角度的翻转。
在本实施例的电致光透过率变化结构100的制作方法中，步骤S1：提供一个电致光透过率变化基础结构10。电致光透过率变化基础结构10包括第一基板11、第二基板12、形成于所述第一基板11和所述第二基板12之间的容纳腔15、以及位于所述容纳腔15内的液晶型聚合单体1311、非液晶型聚合单体1321和胆甾相液晶14。
在步骤S2中：设定胆甾相液晶14的目标角度。
其中，由于胆甾相液晶14的目标角度取决于施加于电致光透过率变化结构100的电场方向。具体的，在足够强的电场强度下，胆甾相液晶14的取向方向和电场的方向一致。
而为了能够使本实施例透光，则必须使得入射光的角度必须和胆甾相液晶14的目标角度一致。综上所述，若需要A入射角度的光线透过本实施例，则需要设定胆甾相液晶14的目标角度为A，且电场的方向也必须满足胆甾相液晶14实现A目标角度。
在本实施例中，需要垂直于电致光透过率变化结构100的光线透过电致光透过率变化结构100，那么则需要将胆甾相液晶14的目标角度设定为90°，即加入电场后，胆甾相液晶14的液晶分子的取向垂直于电致光透过率变化结构100。
在步骤S3中：将液晶型聚合单体1311进行聚合形成具有预设角度的聚合体131，所述预设角度与所述目标角度一致，多个聚合体131形成聚合体网络。具体的，步骤S3包括：
提供一双光子写入设备；
将电致光透过率变化基础结构10放入双光子写入设备中；
对电致光透过率变化基础结构10施加电压；
调整双光子写入设备的激光的入射方向；
采用激光照射电致光透过率变化基础结构10，使得被每一束激光照射处的液晶型聚合单体1311发生聚合形成一具有预设角度的聚合体131，多个聚合体形成聚合体网络。
其中对电致光透过率变化基础结构10施加电压，是为了使液晶型聚合单体1311在足够强的电场强度下按照电场的方向进行排列，形成垂直结构的液晶型聚合单体1311。
而后，在垂直性（激光的入射方向垂直于电致光透过率变化基础结构10所在的平面，即入射角度为90°）激光的照射下，垂直结构的液晶型聚合单体1311发生聚合，形成一垂直结构的聚合体131。即聚合体131的预设角度为90°，使得该预设角度与目标角度一致。而多个聚合体131便形成了聚合体网络。
由于电致光透过率变化基础结构10在被施加电压产生了一个电场，因此所有液晶型聚合单体1311的取向是一致的。而激光也采用垂直性激光，因此每一聚合体131的预设角度相同，且都相同于目标角度。
因此在聚合体网络对胆甾相液晶14的配向作用下，使得越靠近聚合体网络的胆甾相液晶14的倾斜角度越接近胆甾相液晶14的目标角度。进而施加较小的电压，便可使得胆甾相液晶14完成向目标角度的翻转。
在步骤S4中：将聚合体网络和非液晶型聚合单体1321进行聚合形成孔洞结构13。
其中采用紫外线照射聚合体网络和非液晶型聚合单体1321，使得非液晶型聚合单体1321发生之间聚合形成非液晶型聚合体132，非液晶型聚合体132和聚合体网络聚合形成孔洞结构13。而胆甾相液晶14分散在容纳腔15中，在紫外线的照射下不发生聚合，使得孔洞结构13包裹胆甾相液晶14。即孔洞结构13将胆甾相液晶14分割为了多份，每一份对应分布在孔洞结构13的每一孔洞内。另外，非液晶型聚合体132起到支撑第一基板11和第二基板12的作用。
这样便完成了本实施例的电致光透过率变化结构100制备过程。
请参照图1和图2。当电致光透过率变化结构100不加电时，越靠近聚合体网络的胆甾相液晶14的倾斜角度越接近预设角度；当电致光透过率变化结构100加电时，靠近聚合体的胆甾相液晶14将倾倒方向传递至较远的胆甾相液晶14，胆甾相液晶14的螺旋结构解体，胆甾相液晶14发生相变最终转变为沿着电场方向一致排列的向列相液晶，即胆甾相液晶14的倾斜角度转变为目标角度。
相较于现有技术的电致光透过率变化膜，本申请的电致光透过率变化结构及其制作方法通过孔洞结构的聚合体网络的设置，当电致光透过率变化结构不加电时，越靠近聚合体网络的胆甾相液晶的倾斜角度越接近预设角度；当电致光透过率变化结构加电时，靠近聚合体的胆甾相液晶将倾倒方向传递至较远的胆甾相液晶，达到降低驱动电压，节省能耗的目的；解决了现有的PDLC膜需求的驱动电压过高，存在安全隐患和能耗较大的技术问题。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (15)

  1. 一种电致光透过率变化结构，其包括：
    第一基板；
    第二基板，与所述第一基板相对设置并与所述第一基板形成一容纳腔；
    孔洞结构，设置在所述容纳腔内，所述孔洞结构包括聚合体网络，每个所述聚合体网络具有预设角度；以及
    胆甾相液晶，位于所述孔洞结构内；
    所述聚合体网络包括多个聚合体，所述聚合体由液晶型聚合单体通过双光子激光写入技术聚合形成；
    所述孔洞结构还包括非液晶型聚合体，所述非液晶型聚合体由非液晶型聚合单体聚合形成，所述非液晶型聚合单体和所述聚合体网格通过紫外线照射形成所述孔洞结构。
  2. 根据权利要求1所述的电致光透过率变化结构，其中，每个所述聚合体的预设角度等于所述聚合体网络的预设角度。
  3. 根据权利要求1所述的电致光透过率变化结构，其中，所述预设角度为90°。
  4. 根据权利要求1所述的电致光透过率变化结构，其中，所述聚合体在电场的作用下聚合形成。
  5. 一种电致光透过率变化结构，其包括：
    第一基板；
    第二基板，与所述第一基板相对设置并与所述第一基板形成一容纳腔；
    孔洞结构，设置在所述容纳腔内，所述孔洞结构包括聚合体网络，每个所述聚合体网络具有预设角度；以及
    胆甾相液晶，位于所述孔洞结构内。
  6. 根据权利要求5所述的电致光透过率变化结构，其中，所述聚合体网络包括多个聚合体，所述聚合体由液晶型聚合单体通过双光子激光写入技术聚合形成。
  7. 根据权利要求6所述的电致光透过率变化结构，其中，所述聚合体在电场的作用下聚合形成。
  8. 根据权利要求6所述的电致光透过率变化结构，其中，每个所述聚合体的预设角度等于所述聚合体网络的预设角度。
  9. 根据权利要求6所述的电致光透过率变化结构，其中，所述预设角度为90°。
  10. 根据权利要求5所述的电致光透过率变化结构，其中，所述孔洞结构还包括非液晶型聚合体，所述非液晶型聚合体由非液晶型聚合单体聚合形成，所述非液晶型聚合单体和所述聚合体网格通过紫外线照射形成所述孔洞结构。
  11. 一种电致光透过率变化结构的制作方法，其包括：
    提供一个电致光透过率变化基础结构，所述电致光透过率变化基础结构包括第一基板、第二基板、形成于所述第一基板和所述第二基板之间的容纳腔、以及位于所述容纳腔内的液晶型聚合单体、非液晶型聚合单体和胆甾相液晶；
    设定胆甾相液晶的目标角度；
    将所述液晶型聚合单体进行聚合形成具有预设角度的聚合体，所述预设角度与所述目标角度一致，多个所述聚合体形成所述聚合体网络；
    将所述聚合体网络和所述非液晶型聚合单体进行聚合形成孔洞结构，所述胆甾相液晶位于所述孔洞结构中，形成所述电致光透过率变化结构。
  12. 根据权利要求11所述的电致光透过率变化结构的制作方法，其中，将所述液晶型聚合单体进行聚合形成具有预设角度的聚合体，所述预设角度与所述目标角度一致，多个所述聚合体形成所述聚合体网络，包括：
    提供一双光子写入设备；
    将所述电致光透过率变化基础结构放入所述双光子写入设备中；
    对所述电致光透过率变化基础结构施加电压；
    调整所述双光子写入设备的激光的入射方向；
    采用所述激光照射所述电致光透过率变化基础结构，使得被每一束所述激光照射处的所述液晶型聚合单体发生聚合形成一具有所述预设角度的聚合体，多个所述聚合体形成所述聚合体网络。
  13. 根据权利要求12所述的电致光透过率变化结构的制作方法，其中，每一所述聚合体的预设角度相同。
  14. 根据权利要求12所述的电致光透过率变化结构的制作方法，其中，所述将所述聚合体网络和所述非液晶型聚合单体进行聚合形成孔洞结构，包括：
    采用紫外线照射所述聚合体网络和所述非液晶型聚合单体，使得所述非液晶型聚合单体发生之间聚合形成非液晶型聚合体，所述非液晶型聚合体和所述聚合体网络聚合形成所述孔洞结构。
  15. 根据权利要求12所述的电致光透过率变化结构的制作方法，其中，所述激光的入射方向垂直于所述电致光透过率变化基础结构的所在平面。
PCT/CN2019/085971 2019-04-08 2019-05-08 电致光透过率变化结构及其制作方法 Ceased WO2020206782A1 (zh)

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