Intelligent window with light and temperature dual control function

Abstract

The application discloses an intelligent window with light and temperature double control functions, which has a planar electrode light-transmitting conductive substrate and an interdigital electrode oppositely arranged with the planar electrode light-transmitting conductive substrate, and a polymer stabilized cholesteric phase liquid crystal layer is arranged between the planar electrode light-transmitting conductive substrate and the interdigital electrode; wherein the interdigital electrode comprises two electrodes, namely electrode 1 and electrode 2, which are parallel to each other and arranged in an interval staggered manner; and the polymer stabilized cholesteric phase liquid crystal layer is formed by solidification of a liquid crystal mixture. The scheme has the advantages of simple preparation process and flow, low cost of raw materials, easy preparation and industrial production. The intelligent window with indoor light and temperature double control functions has diversified light-transmitting states, can meet personalized needs of users in different situations, and has a huge application prospect in the fields of vehicle-mounted glass, building windows and the like.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal materials and devices, and in particular to a smart window with dual light and temperature control functions. Background Technology

[0002] Windows are an essential component of modern buildings and vehicles, directly impacting the transfer of light and heat. During the day, transparent windows allow sunlight to enter, providing illumination and reducing energy consumption for lighting systems. When windows block visible light and become opaque, they create a relatively enclosed and private environment. Furthermore, sunlight is an energy wave that generates significant heat while ensuring adequate lighting inside buildings. By reflecting infrared light carrying substantial heat back outdoors while allowing visible light necessary for illumination to enter, indoor temperature can be controlled to some extent, preventing interference with natural lighting. These smart windows, capable of controlling different wavelengths of sunlight, can meet users' needs in various situations.

[0003] Based on liquid crystal materials, researchers have developed smart windows that use electroresponsive liquid crystals to scatter visible light or reflect infrared light, enabling them to freely adjust sunlight to achieve privacy protection or control indoor temperature.

[0004] Researchers have integrated the aforementioned privacy protection and temperature control functions by using special chemical materials such as dual-frequency liquid crystals, dichroic dyes, or by superimposing multiple layers of control regions. However, existing technologies (such as patent CN109917594B and the literature "Electrically switchable bistable dual frequency liquid crystal light shutter with hyper-reflection innear infrared") complicate the fabrication process of such dual-controlled smart windows and significantly increase material costs, hindering practical industrial production and promotion.

[0005] Therefore, it is necessary to provide a smart window that uses only common chemical materials and has a simple and low-cost preparation process. This smart window can have a high sensitivity in the visible and near-infrared spectral regions, thereby efficiently achieving dual control of light and temperature in the indoor environment. Summary of the Invention

[0006] Based on this, the present invention discloses an intelligent window with dual light and temperature control function, which has a planar electrode light-transmitting and conductive substrate and an interdigital electrode light-transmitting and conductive substrate disposed opposite to the planar electrode light-transmitting and conductive substrate. A polymer-stabilized cholesteric liquid crystal layer is disposed between the planar electrode light-transmitting and conductive substrate and the interdigital electrode light-transmitting and conductive substrate.

[0007] The interdigitated electrode transparent conductive substrate includes interdigitated electrodes, each of which includes two electrodes, namely electrode 1 and electrode 2. Electrode 1 and electrode 2 are parallel to each other and are arranged in an alternating pattern.

[0008] The polymer-stabilized cholesteric phase liquid crystal layer is formed by curing a liquid crystal mixture.

[0009] Furthermore, both the planar electrode transparent conductive substrate and the interdigitated electrode transparent conductive substrate are provided with planar alignment layers, namely planar alignment layer 1 and planar alignment layer 2, respectively.

[0010] The polymer-stabilized cholesteric liquid crystal layer is mainly composed of a polymer network and a cholesteric liquid crystal.

[0011] Furthermore, the liquid crystal mixture comprises a nematic liquid crystal material, a crosslinkable liquid crystal monomer, a chiral dopant, and a photoinitiator. The polymer network is formed by the interaction of the crosslinkable liquid crystal monomer and the photoinitiator, and the cholesteric liquid crystal is a helical structure formed by the nematic liquid crystal material and the chiral dopant.

[0012] Preferably, the liquid crystal mixture comprises 80-90 parts by weight of nematic liquid crystal material, 1-4 parts by weight of crosslinkable liquid crystal monomer, 7-14 parts by weight of chiral dopant, and 1-3 parts by weight of photoinitiator.

[0013] Furthermore, a thickness control adhesive is provided between the planar electrode transparent conductive substrate and the interdigitated electrode transparent conductive substrate, and the thickness control adhesive is located on both sides of the polymer-stabilized cholesteric liquid crystal layer.

[0014] Furthermore, the smart window with dual light and temperature control functions is connected to one or both of AC and DC power supplies.

[0015] Necessarily, the smart window with dual light and temperature control also includes a power supply component, which includes an AC power supply, a DC power supply, and necessary switches and wires. The electrodes of the two light-transmitting conductive substrates are respectively connected to the two poles of the power supply component.

[0016] When no voltage is applied, the cholesteric liquid crystal in the cholesteric liquid crystal layer is arranged in a planar state parallel to the light-transmitting conductive substrate. The smart window has a high transmittance of visible light and a small reflection bandwidth of infrared light. Most of the sunlight can pass through the smart window and enter the room. At this time, the smart window is in a transparent and non-insulated state.

[0017] When an AC voltage is applied, an electric field perpendicular to the substrate is formed inside the device. The cholesteric liquid crystal with positive dielectric anisotropy will rearrange under the action of the electric field force to present a focal conic state. The smart window scatters the visible light in the incident sunlight and presents a blurred state. At this time, the smart window is in a non-heat-insulating state of visual blocking. After the AC voltage is removed, the smart window returns to the initial transparent non-heat-insulating state.

[0018] When a DC voltage is applied, an interdigitated electric field, resembling a parabola, is formed inside the device, gradually becoming parallel to the substrate from perpendicular. Under the influence of the electric field parallel to the substrate, the cholesteric liquid crystal undergoes an uncoiling effect and is stretched. Under the influence of the electric field inclined to the substrate, it is deflected and compressed. Furthermore, the positively charged polymer network, which captures polar cations from the raw materials, moves towards the negative electrode and away from the positive electrode under the influence of the electric field. This movement further causes the cholesteric liquid crystal to be stretched and compressed. Using the interdigitated electric field formed by connecting the DC voltage to the interdigitated electrodes, the smart window's ability to regulate the infrared light reflection bandwidth is improved. The cholesteric liquid crystal in the polymer-stabilized cholesteric liquid crystal layer redistributes, and the pitch of the cholesteric liquid crystal changes, forming a certain pitch gradient. This increased reflection bandwidth allows more infrared light carrying a large amount of heat to be reflected out of the room, achieving the purpose of heat insulation and temperature control. Furthermore, at this point, the cholesteric liquid crystals within the polymer-stabilized cholesteric liquid crystal layer are still arranged parallel to the light-transmitting conductive substrate, presenting a planar state. The smart window in this state is a transparent and heat-insulating state. After the DC voltage is removed, the smart window returns to its initial state. The opacity of the smart window and the width of the reflected infrared light can both be controlled by adjusting the magnitude of the applied voltage.

[0019] Furthermore, the nematic liquid crystal material is selected from one or more of E7 or gg-331.

[0020] Furthermore, the crosslinkable liquid crystal monomer is selected from acrylate derivatives.

[0021] Furthermore, the chiral dopant is a left-handed or right-handed liquid crystal molecule, preferably at least one selected from S1011, R1011, S811 or R811.

[0022] Furthermore, the photoinitiator is selected from at least one of Irgacure-651, Irgacure-819, Irgacure-369 or Irgacure-184.

[0023] Furthermore, one end of the AC power supply is connected to the planar electrode transparent conductive substrate, and the other end is connected to electrode 1 and electrode 2 of the interdigitated electrode.

[0024] Furthermore, one end of the DC power supply is connected to electrode 1 of the interdigital electrode, and the other end is connected to electrode 2 of the interdigital electrode.

[0025] Furthermore, the interdigitated electrode has an electrode width of 35–115 μm and a distance of 25–40 μm between adjacent electrodes;

[0026] The thickness of the polymer-stabilized cholesteric liquid crystal layer is 30–50 μm. This thickness is controlled by a thickness-controlling adhesive disposed between the two substrates. The thickness-controlling adhesive comprises 3–5 parts by weight of spacers and 95–97 parts by weight of UV-curable adhesive.

[0027] The preparation method of the polymer-stabilized cholesteric liquid crystal layer of the above-mentioned smart window with dual light and temperature control function includes the following steps:

[0028] Planar electrode transparent conductive substrate and interdigitated electrode transparent conductive substrate are arranged opposite each other. Parallel alignment layers are provided on opposite sides of each transparent conductive substrate. Liquid crystal mixture is then filled between the parallel alignment layers and the liquid crystal mixture is cured to form a polymer-stabilized cholesteric phase liquid crystal layer.

[0029] The present invention has the following beneficial effects:

[0030] This invention provides a smart window with dual light and temperature control functions. Compared to previous fabrication methods that require special chemical materials or superimposed adjustment regions, this smart window is composed of readily available materials and a translucent conductive substrate with interdigitated electrodes. It utilizes the interdigitated electrodes to alter the electric field distribution, causing the polymer network and cholesteric liquid crystal in the adjustment region to respond to the electric field, achieving visible light scattering and infrared light reflection effects. Furthermore, the use of interdigitated electrodes further broadens the infrared light reflection bandwidth.

[0031] Compared to smart windows that use special chemical materials or overlapping adjustment zones to achieve privacy protection and temperature control, this solution has the advantages of simple preparation process, low-cost and readily available raw materials, and ease of industrial production. The smart window of this invention, designed for dual control of indoor light and temperature, offers diverse light transmission states, meeting users' personalized needs in different situations, and has great application prospects in fields such as automotive glass and building windows. Attached Figure Description

[0032] Figure 1 A schematic diagram of an embodiment of a smart window with dual light and temperature control functions is shown;

[0033] Figure 2 This diagram illustrates the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function in Embodiment 1 of the present invention when no voltage is applied.

[0034] Figure 3The diagram shows the transient electric field distribution of the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function in Embodiment 1 of the present invention when an AC voltage is applied.

[0035] Figure 4 This diagram illustrates the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function according to Embodiment 1 of the present invention when connected to a 100V AC voltage.

[0036] Figure 5 The graph shows the wavelength-transmittance curves of the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function in Embodiment 1 of the present invention under different AC voltages.

[0037] Figure 6 The diagram shows the transient electric field distribution of the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function in Embodiment 1 of the present invention when a DC voltage is applied.

[0038] Figure 7 This diagram illustrates the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function according to Embodiment 1 of the present invention when a 69V DC voltage is applied.

[0039] Figure 8 The diagram shows the wavelength-transmittance curves of the polymer-stabilized cholesteric liquid crystal layer of the smart window with dual light and temperature control function in Embodiment 1 of the present invention under different DC voltages.

[0040] Figure 9 The diagram shows the wavelength-transmittance curves of a polymer-stabilized cholesteric liquid crystal layer with dual light and temperature control for a smart window, as shown in the diagram, under different DC voltages.

[0041] Reference numerals in the figures: Planar electrode transparent conductive substrate—1; Planar electrode—11, Parallel alignment layer 1—12; Interdigitated electrode transparent conductive substrate—2; Interdigitated electrode—21; Parallel alignment layer 2—22; Interdigitated electrode electrode 1—21-1; Interdigitated electrode electrode 2—21-2; Polymer stabilized cholesteric liquid crystal layer—3; Polymer network—4; Cholesteric liquid crystal—5; AC power supply assembly—6; DC power supply assembly—7; Thickness control adhesive—8. Detailed Implementation

[0042] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Unless otherwise specified, the experimental methods used in the embodiments are conventional methods; the materials and reagents used are commercially available.

[0043] Example 1

[0044] A smart window with dual light and temperature control functions, the device is arranged from top to bottom as follows: planar electrode light-transmitting conductive substrate (1) (1100μm) / polymer-stabilized cholesteric liquid crystal layer (3) (30μm) / interdigitated electrode light-transmitting conductive substrate (2) (1100μm);

[0045] Among them, the planar electrode transparent conductive substrate (1) is composed of a planar electrode (11) (25nm) and a parallel alignment layer 1 (12) (50nm);

[0046] The interdigitated electrode transparent conductive substrate (2) is composed of interdigitated electrodes (21) (25nm) and parallel alignment layer 2 (22) (50nm);

[0047] The interdigitated electrode (21) consists of electrode 1 (21-1) (25nm) and electrode 2 (21-2) (25nm), which are parallel to each other and arranged in an alternating pattern; the electrode width is 115μm and the distance between adjacent electrodes is 25μm; there is also a parallel orientation layer 2 (22) (50nm) on electrode 1 (21-1) and electrode 2 (21-2);

[0048] A thickness control adhesive (8) (composed of 5 parts by mass of spacers and 95 parts by mass of UV-curable adhesive) is also provided between the planar electrode transparent conductive substrate (1) and the interdigitated electrode transparent conductive substrate (2). The thickness control adhesive (8) is located on both sides of the polymer-stabilized cholesteric liquid crystal layer (3) and is used to adjust the height of the polymer-stabilized cholesteric liquid crystal layer (3) and provide support.

[0049] The aforementioned smart window with dual light and temperature control functions can selectively be disconnected from voltage, connected to AC voltage (6), or connected to DC voltage (7).

[0050] One end of the AC power supply (6) is connected to the planar electrode transparent conductive substrate (1), and the other end is connected to the electrode 1 (21-1) of the interdigital electrode (21).

[0051] One end of the DC power supply (7) is connected to electrode 1 (21-1) of the interdigital electrode (21), and the other end is connected to electrode 2 (21-2) of the interdigital electrode (21).

[0052] The preparation method of the aforementioned smart window with dual light and temperature control function is as follows:

[0053] Under yellow light conditions

[0054] S1. Take clean ITO flat electrode glass and ITO interdigitated electrode glass, treat them with ultraviolet ozone, spin-coat them with polyvinyl alcohol solution, and then heat and rub them to form a flat electrode (11) and interdigitated electrode (21) with parallel alignment layer 1 (12) attached; use the ultraviolet curing adhesive contained in the spacer with a thickness of 30μm to bond and form a liquid crystal cell.

[0055] S2. Take 82.2 parts by mass of nematic liquid crystal E7, 3 parts by mass of crosslinkable liquid crystal monomer RM257, 13.8 parts by mass of dextrorotatory chiral dopant S811, and 1 part by mass of photoinitiator Irgacure-651 in a brown bottle and mix them evenly at 60°C to prepare a liquid crystal mixture.

[0056] S3. Under a hot stage at 35°C, the liquid crystal mixture fills the liquid crystal cell through capillary action, forming a cholesteric liquid crystal containing polymers under the action of chiral dopants. After standing for 60 minutes, the hot stage is turned off, allowing it to cool naturally to room temperature. Then, the device is placed at 32 mW / cm². 2 Cured under ultraviolet light for 3 minutes, the crosslinkable liquid crystal monomers and photoinitiators in the liquid crystal mixture form a polymer network (4) under ultraviolet light. The nematic liquid crystal material and chiral dopant in the liquid crystal mixture form a cholesteric liquid crystal with a helical structure (5). The polymer network (4) and the cholesteric liquid crystal (5) together form a polymer-stabilized cholesteric liquid crystal layer (3), that is, the polymer-stabilized cholesteric liquid crystal layer (3) is prepared.

[0057] The structural formula of the crosslinkable liquid crystal monomer RM257 is as follows:

[0058]

[0059] The structural formula of the chiral dopant S811 is:

[0060]

[0061] The structural formula of the photoinitiator Irgacure-651 is:

[0062]

[0063] Figure 1A schematic diagram of a smart window with dual light and temperature control functions as described in the above embodiment is shown.

[0064] Test case

[0065] Figure 2 This diagram illustrates the polymer-stabilized cholesteric liquid crystal layer (3) of the smart window with dual light and temperature control function in Embodiment 1 of the present invention when no voltage is applied. Figure 2 As shown, when no voltage is applied, under the control of parallel alignment layer 1 (12) and parallel alignment layer 2 (22), the cholesteric liquid crystal (5) in the polymer-stabilized cholesteric liquid crystal layer (3) is arranged in a planar state parallel to the planar electrode transparent conductive substrate (1). At this time, the smart window allows most of the sunlight to enter the room and reflects a small part of the infrared light, and is in a transparent and non-insulated state.

[0066] Figure 3 The diagram shows the transient electric field distribution of the polymer-stabilized cholesteric liquid crystal layer (3) of the intelligent window with dual light and temperature control function in Embodiment 1 of the present invention under an applied AC voltage. Figure 3 As shown, when an AC voltage is applied, a vertical electric field that is almost entirely perpendicular to the substrate is formed in the adjustment area.

[0067] Figure 4 This diagram illustrates the polymer-stabilized cholesteric liquid crystal layer (3) of the intelligent window with dual light and temperature control function according to Embodiment 1 of the present invention when connected to a 100V AC voltage. Figure 3 As shown, when an AC voltage is applied, under the action of an electric field force perpendicular to the substrate, the cholesteric liquid crystal in the cholesteric liquid crystal layer rearranges from a planar state to a focal conic state. At this time, the cholesteric liquid crystal exhibits a strong scattering effect on the incident light, and the smart window appears as a blurry and non-insulating state.

[0068] Figure 5 The diagram shows the wavelength-transmittance curves of the polymer-stabilized cholesteric liquid crystal layer (3) of the smart window with dual light and temperature control function in Embodiment 1 of the present invention under different AC voltages. Figure 5 As shown, as the AC voltage increases, the transmittance of the smart window in the visible light band decreases continuously. At this time, the smart window appears blurred, which can block the line of sight and achieve privacy protection.

[0069] Figure 6 The diagram illustrates the transient electric field distribution of the polymer-stabilized cholesteric liquid crystal layer (3) of the intelligent window with dual light and temperature control function in Embodiment 1 of the present invention under a DC voltage. Figure 6 As shown, when a DC voltage is applied, an interdigital electric field that is approximately parabolic and gradually becomes parallel to the substrate is formed in the adjustment area.

[0070] Figure 7This diagram illustrates the polymer-stabilized cholesteric liquid crystal layer (3) of the intelligent window with dual light and temperature control function according to Embodiment 1 of the present invention when a 69V DC voltage is applied. Figure 7 As shown, when a DC voltage is applied, an interdigitated electric field gradually forms inside the device, moving from perpendicular to the substrate. Under the influence of the electric field parallel to the substrate, the cholesteric liquid crystal undergoes an uncoiling effect and is stretched. Under the influence of the electric field inclined to the substrate, it is deflected and compressed. Furthermore, the polymer network, positively charged due to capturing polar cations from the raw materials, moves towards the negative electrode and away from the positive electrode under the influence of the electric field formed by the DC voltage. This movement further stretches and compresses the cholesteric liquid crystal. Using interdigitated electrodes connected to the interdigitated electric field formed by the DC voltage, the smart window's ability to regulate the infrared light reflection bandwidth is improved. The cholesteric liquid crystal in the polymer-stabilized cholesteric liquid crystal layer redistributes, forming a certain pitch gradient, increasing its reflection bandwidth and reflecting more infrared light carrying a large amount of heat out of the room, thus achieving the purpose of heat insulation and temperature control. At this time, the cholesteric liquid crystal in the overall cholesteric liquid crystal layer still exhibits a planar arrangement; the smart window in this state is transparent and non-insulating.

[0071] Figure 8 The diagram shows the wavelength-transmittance curves of the polymer-stabilized cholesteric liquid crystal layer (3) of the intelligent window with dual light and temperature control function in Embodiment 1 of the present invention under different DC voltages. Figure 8 As shown, with the increase of the DC voltage, the infrared reflection bandwidth of the smart window is continuously widened, and the smart window can then block a large amount of heat to achieve temperature control.

[0072] In the above embodiments, the mechanism of the interdigitated electrodes is as follows: when a DC voltage is applied, the presence of the interdigitated electrodes creates an interdigitated electric field inside the device that gradually becomes parallel to the substrate from the vertical direction. This interdigitated electric field ensures that the cholesteric liquid crystal maintains a planar texture with high transparency, while also allowing the cholesteric liquid crystal to be stretched and compressed more intensely, increasing the pitch gradient. Therefore, it can generate a larger reflection bandwidth in infrared light, achieving the effect of reflecting more infrared light, and improving the stability of the planar texture of the cholesteric liquid crystal.

[0073] Comparative Example

[0074] The smart window with dual light and temperature control shown in the comparative example has the same structure as that in Example 1. The only difference is that the upper and lower light-transmitting conductive substrates in the comparative example are conventional flat plate electrodes.

[0075] Figure 9 The diagram shows the wavelength-transmittance curves of a polymer-stabilized cholesteric liquid crystal layer with dual light and temperature control for a smart window in the comparative example, under different DC voltages.

[0076] and Figure 9 The comparison shows that Figure 8 Using interdigitated electrodes as a transparent conductive substrate has a better broadening effect and can also increase the stability of the planar texture of cholesteric liquid crystal, so that the smart window can still maintain high transparency.

[0077] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0078] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart window with dual light and temperature control functions, characterized in that, The smart window with dual light and temperature control function has a planar electrode light-transmitting and conductive substrate, and an interdigitated electrode light-transmitting and conductive substrate disposed opposite to the planar electrode light-transmitting and conductive substrate. A polymer-stabilized cholesteric liquid crystal layer is disposed between the planar electrode light-transmitting and conductive substrate and the interdigitated electrode light-transmitting and conductive substrate. The interdigitated electrode transparent conductive substrate includes interdigitated electrodes, each of which includes two electrodes, namely electrode 1 and electrode 2. Electrode 1 and electrode 2 are parallel to each other and are arranged in an alternating pattern. The polymer-stabilized cholesteric phase liquid crystal layer is formed by curing a liquid crystal mixture. The smart window with dual light and temperature control functions is connected to one or both of AC and DC power sources. One end of the AC power supply is connected to the planar electrode transparent conductive substrate, and the other end is connected to electrode 1 and electrode 2 of the interdigitated electrode. One end of the DC power supply is connected to electrode 1 of the interdigital electrode, and the other end is connected to electrode 2 of the interdigital electrode. The interdigitated electrodes have an electrode width of 35~115 μm and a distance of 25~40 μm between adjacent electrodes; The thickness of the polymer-stabilized cholesteric phase liquid crystal layer is 30~50 μm; When an AC voltage is applied, under the action of an electric field force perpendicular to the substrate, the cholesteric liquid crystal in the cholesteric liquid crystal layer rearranges from a planar state to a focal conic state. At this time, the cholesteric liquid crystal exhibits a strong scattering effect on the incident light, and the smart window appears as a blurry and non-insulating state. When a DC voltage is applied, an interdigital electric field is formed inside the device, gradually becoming parallel to the substrate from the vertical direction. The pitch of the cholesteric liquid crystal forms a certain pitch gradient, at which point it reflects infrared light and presents a transparent and heat-insulating state.

2. The intelligent window with dual light and temperature control function according to claim 1, characterized in that, The liquid crystal mixture comprises a nematic liquid crystal material, a crosslinkable liquid crystal monomer, a chiral dopant, and a photoinitiator.

3. The intelligent window with dual light and temperature control function according to claim 1, characterized in that, A thickness control adhesive is further disposed between the planar electrode transparent conductive substrate and the interdigitated electrode transparent conductive substrate, and the thickness control adhesive is located on both sides of the cholesteric liquid crystal layer.

4. The intelligent window with dual light and temperature control function according to claim 2, characterized in that, The nematic liquid crystal material is selected from one or more of E7 or gg-331.

5. The intelligent window with dual light and temperature control function according to claim 2, characterized in that, The crosslinkable liquid crystal monomer is selected from acrylate derivatives.

6. The intelligent window with dual light and temperature control function according to claim 2, characterized in that, The photoinitiator is selected from at least one of Irgacure-651, Irgacure-819, Irgacure-369 or Irgacure-184.

Images