Dimming glass

Abstract

The invention provides dimming glass, belongs to the technical field of glass, and aims at improving the heat insulation performance of dye liquid crystal dimming glass. The dimming glass comprises a first glass substrate and a second glass substrate which are oppositely arranged; the dimming function layer is located between the first glass substrate and the second glass substrate, and the dimming function layer at least comprises a liquid crystal layer; the first isolation layer is located on the side, away from the second glass substrate, of the dimming function layer and is configured to reflect or absorb near-infrared light incident from the outside and mid-far infrared light emitted through the liquid crystal layer; the second isolation layer is located on the side, away from the first glass substrate, of the dimming function layer and is configured to reflect infrared light emitted by the outside and infrared light emitted by the liquid crystal layer.

Description

Technical Field

[0001] The present disclosure relates to the technical field of glass, and particularly to a dimming glass. Background Art

[0002] Liquid crystal dye glass is a new type of intelligent glass material, which includes a liquid crystal molecule layer inside. The arrangement of liquid crystal molecules and dye molecules can be adjusted by controlling the voltage, and the light transmittance of the liquid crystal dye glass can be regulated.

[0003] However, there is currently a lack of a structure for optimizing the infrared thermal radiation insulation performance of liquid crystal dye glass, which limits the insulation performance of liquid crystal dye glass. Summary of the Invention

[0004] Based on the content of the background art, the present disclosure provides a dimming glass, comprising:

[0005] A first glass substrate and a second glass substrate arranged oppositely;

[0006] A dimming functional layer located between the first glass substrate and the second glass substrate, and the dimming functional layer at least includes a liquid crystal layer;

[0007] A first isolation layer located on the side of the dimming functional layer facing away from the second glass substrate, and is configured to reflect or absorb incident near-infrared light from the outside and mid- and far-infrared light transmitted through the liquid crystal layer;

[0008] A second isolation layer located on the side of the dimming functional layer facing away from the first glass substrate, and is configured to reflect incident infrared light from the outside and infrared light emitted by the liquid crystal layer.

[0009] Optionally, the first isolation layer at least includes silver nanorods or silver nanosheets, and the second isolation layer at least includes a silver nanomembrane;

[0010] Wherein, the aspect ratio of the silver nanorods is 3:1 - 5:1.

[0011] Optionally, the first isolation layer is formed by mixing a transparent material and metal nanoparticles, and the metal nanoparticles include at least one of gold nanospheres, silver nanorods or silver nanosheets, aluminum nanoparticles, copper nanoparticles, platinum nanospheres, and palladium nanospheres;

[0012] Wherein, the transparent material is selected from one of a pressure-sensitive adhesive doped with dyes, polyolefins, rare earth materials, tungsten oxides, and hollow silica microsphere materials.

[0013] Optionally, the metal nanoparticles are arranged in the first isolation layer at a quantity of 15 - 30 per square micrometer.

[0014] Optionally, the size of the metal nanoparticles is 10-20 nm.

[0015] Optionally, the second isolation layer sequentially includes, in the direction from the first glass substrate to the second glass substrate:

[0016] a first silver layer, a first barrier layer, a second silver layer, a second barrier layer, and a third silver layer;

[0017] wherein, a first transparent microsphere layer is included between the first silver layer and the first barrier layer;

[0018] a second transparent microsphere layer is included between the second silver layer and the second barrier layer.

[0019] Optionally, the first transparent microsphere layer and the second transparent microsphere layer are formed of silica microspheres, and the size of the silica microspheres is 5-15 nm.

[0020] Optionally, the thickness of the first transparent microsphere layer and the second transparent microsphere layer is 20-60 nm.

[0021] Optionally, the first isolation layer is located on a side of the first glass substrate facing away from the light modulation functional layer;

[0022] The light modulation glass further includes a first protective film layer, and the first protective film layer is located on a side of the first isolation layer facing away from the first glass substrate.

[0023] Optionally, the first isolation layer is located between the first glass substrate and the light modulation functional layer;

[0024] The light modulation glass further includes a first passivation layer, and the first passivation layer is located between the first isolation layer and the light modulation functional layer, or between the first isolation layer and the first glass substrate.

[0025] Optionally, the second isolation layer is located on a side of the second glass substrate facing away from the light modulation functional layer;

[0026] The light modulation glass further includes a second protective film layer, and the second protective film layer is located on a side of the second isolation layer facing away from the second glass substrate.

[0027] Optionally, the second isolation layer is located between the second glass substrate and the light modulation functional layer;

[0028] The light modulation glass further includes a second passivation layer, and the second passivation layer is located between the second isolation layer and the light modulation functional layer, or between the second isolation layer and the second glass substrate.

[0029] The dimming glass provided by the present disclosure is provided with a first isolation layer on the side of the dimming functional layer facing away from the second glass substrate, and a second isolation layer on the side of the dimming functional layer facing away from the first glass substrate. Since the first isolation layer can reflect the infrared light incident from the outside and transmit the infrared light emitted from the liquid crystal layer, while the second isolation layer can reflect the infrared light incident from the outside and the infrared light emitted from the liquid crystal layer. In this way, both the infrared light incident from the outside and the infrared light absorbed by the liquid crystal layer from visible light radiation can be reflected back to the outside, thereby improving the heat insulation performance of the dimming glass.

[0030] The above description is only an overview of the technical solution of the present disclosure. In order to be able to understand the technical means of the present disclosure more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present disclosure more obvious and understandable, the specific embodiments of the present disclosure are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following will briefly introduce the drawings required to be used in the description of the embodiments or related technologies. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. It should be noted that the ratios in the drawings are only for illustration and do not represent the actual ratios.

[0032] Figure 1 Shows a schematic structural diagram of the dimming glass provided by the embodiment of the present disclosure;

[0033] Figure 2 Shows a schematic diagram of the light path of the dimming glass provided by the embodiment of the present disclosure when irradiated by sunlight;

[0034] Figure 3 Shows a schematic diagram of the radiation intensity of light from different sources;

[0035] Figure 4 Shows a schematic structural diagram of the second isolation layer in the embodiment of the present disclosure;

[0036] Figure 5 Shows a graph of the reflection performance of the three-layer silver film and the second isolation layer for light of different wavelengths;

[0037] Figure 6 Shows a schematic structural diagram of the dimming glass provided by another embodiment of the present disclosure;

[0038] Figure 7 Shows a schematic structural diagram of the dimming glass provided by still another embodiment of the present disclosure;

[0039] Figure 8Shows the light transmission performance diagram of the first isolation layer for lights of different wavelengths in Example 1;

[0040] Figure 9 Shows the comparison diagram of the light transmission performance of the second isolation layer in Example 1 and the three-layer silver film in the related art for lights of different wavelength bands. Specific embodiments

[0041] To make the above objects, features, and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present disclosure.

[0042] As a new type of intelligent glass material, in terms of heat insulation performance, compared with other dimming glass technologies, the advantages of liquid crystal dye dimming glass are as follows: 1. The dimming function has an auxiliary effect on heat insulation: The dye liquid crystal dimming glass can adjust the arrangement of liquid crystal molecules and dye molecules by adjusting the voltage to achieve the regulation of the light transmittance. Among them, when the dye liquid crystal dimming glass is in an opaque state, the dimming glass can block the entry of part of the light, reduce the energy carried by the light from entering the room or the vehicle, and play a heat insulation effect to a certain extent. Compared with the dimming glass that can only achieve the switching between transparency and atomization, the dye liquid crystal dimming glass has a better heat insulation effect; 2. The neutral color dimming has little impact on heat absorption: The color of the dye liquid crystal dimming glass is usually a neutral color, while in other dimming glasses, there are cases where color deviation occurs during the color change process or the temperature of the glass itself rises after absorbing light of a specific wavelength, affecting the heat insulation performance; the characteristics of the neutral color enable the dye liquid crystal dimming glass to absorb heat relatively stably under different dimming states and will not absorb extra heat due to color changes.

[0043] However, the dye liquid crystal dimming glass also has certain defects. During the use of the dye liquid crystal dimming glass, obvious heating phenomena will occur when it is in a heat absorption state for a long time, resulting in a rapid rise in the surrounding environmental temperature and reducing the user experience. Moreover, the dye liquid crystal dimming glass only has a good dimming effect in the visible light band and has a very weak shielding effect in the near-infrared band, making it difficult to effectively isolate the external infrared radiation. This means that a large amount of infrared heat can still pass through the glass and enter the room or the vehicle, affecting the heat insulation performance of the dye liquid crystal dimming glass.

[0044] Currently, special structural designs or heat insulation coatings are usually adopted on the dimming glass to improve the heat insulation performance, but currently, there is a lack of structures or coatings specifically optimized for the infrared thermal radiation heat insulation performance for the dye liquid crystal dimming glass.

[0045] In view of this, embodiments of the present disclosure provide a dimming glass, which adopts two infrared thermal radiation isolation layers with different properties. Specifically, a first isolation layer is provided on the side close to the external environment, and a second isolation layer is provided on the side close to the indoor / car environment. The first isolation layer isolates the infrared light incident from the outside, and the second isolation layer isolates the infrared light incident from the outside and the infrared light generated by the absorption of visible light by the liquid crystal dye. Thereby, the heat insulation performance of the dimming glass is improved.

[0046] Referring to Figure 1 , Figure 1 FIG. shows a schematic structural diagram of the dimming glass provided by the embodiments of the present disclosure. The dimming glass is a dye liquid crystal dimming glass. As Figure 1 shown, the dimming glass specifically includes:

[0047] Relatively arranged first glass substrate 100 and second glass substrate 200;

[0048] A dimming functional layer 300, located between the first glass substrate 100 and the second glass substrate 200. The dimming functional layer 300 at least includes a liquid crystal layer 310;

[0049] A first isolation layer 400, located on the side of the dimming functional layer 300 facing away from the second glass substrate 200, and is configured to reflect or absorb the near-infrared light incident from the outside and the mid- and far-infrared light transmitted through the liquid crystal layer 310;

[0050] A second isolation layer 500, located on the side of the dimming functional layer 300 facing away from the first glass substrate 100, and is configured to reflect the infrared light incident from the outside and the infrared light emitted by the liquid crystal layer 310.

[0051] Among them, the near-infrared light is light with a wavelength range between 780 nm and 2000 nm, the mid-infrared light is light with a wavelength range between 2000 nm and 50000 nm, and the far-infrared light is light with a wavelength range between 50000 nm and 1 mm. Then, the first isolation layer 400 reflects or absorbs light with a wavelength range between 780 nm and 2000 nm, and transmits light with a wavelength range greater than 2000 nm, while the second isolation layer 500 reflects light with a wavelength range between 780 nm and 1 mm.

[0052] In this embodiment, the first glass substrate 100 is located on the side close to the external environment, the second glass substrate 200 is located on the side close to the interior of the room / vehicle, and the light-dimming functional layer 300 is located between the first glass substrate 100 and the second glass substrate 200 to achieve the light-dimming effect. Among them, the light-dimming functional layer 300 realizes the change of the liquid crystal orientation in the liquid crystal layer 310 by applying voltages on both sides of the liquid crystal layer 310. Then, the light-dimming functional layer 300 may further include a first liquid crystal electrode 320 and a second liquid crystal electrode 330, which are respectively located on both sides of the liquid crystal layer 310. By applying voltages on the two liquid crystal electrodes, the liquid crystal orientation in the liquid crystal 310 is changed, thereby achieving the light-dimming effect. It can be understood that other functional film layers such as a sound insulation layer, an ultraviolet protection layer, a visible light antireflection layer, and a transparent solar cell film can be added between the light-dimming functional layer 300 and the first glass substrate 100 and the second glass substrate 200. Then, the light-dimming functional layer 300 may further include a first dielectric substrate 340 and a second dielectric substrate 350. The first dielectric substrate 340 is located on the side of the first liquid crystal electrode 320 facing away from the liquid crystal layer 310, and the second dielectric substrate 350 is located on the side of the second liquid crystal electrode 330 facing away from the liquid crystal layer 310, separating the liquid crystal layer 310 and the liquid crystal electrodes from other functional layers.

[0053] Among them, the first isolation layer 400 may be located between the first glass substrate 100 and the light-dimming functional layer 300, or on the side of the first glass substrate 100 facing away from the light-dimming functional layer 300. When the first isolation layer 400 is located between the first glass substrate 100 and the light-dimming functional layer 300, if the first isolation layer 400 is closer to the first glass substrate 100, a passivation layer may be provided between the first isolation layer 400 and the first glass substrate 100. If the first isolation layer 400 is closer to the light-dimming functional layer 300, a passivation layer may be provided between the first isolation layer 400 and the light-dimming functional layer 300. When the first isolation layer 400 is located on the side of the first glass substrate 100 facing away from the light-dimming functional layer 300, a protective layer may be provided on the side of the first isolation layer 400 facing away from the first glass substrate 100 to prevent damage to the first isolation layer 400.

[0054] Similarly, the second isolation layer 500 can be located between the second glass substrate 200 and the light-adjusting functional layer 300, or on the side of the second glass substrate 200 facing away from the light-adjusting functional layer 300. When the second isolation layer 500 is located between the second glass substrate 200 and the light-adjusting functional layer 300, if the second isolation layer 500 is closer to the second glass substrate 200, a passivation layer can be provided between the second isolation layer 500 and the second glass substrate 200. If the second isolation layer 500 is closer to the light-adjusting functional layer 300, a passivation layer can be provided between the second isolation layer 500 and the light-adjusting functional layer 300. When the second isolation layer 500 is located on the side of the second glass substrate 200 facing away from the light-adjusting functional layer 300, a protective layer can be provided on the side of the second isolation layer 500 facing away from the second glass substrate 200 to prevent damage to the second isolation layer 500.

[0055] Among them, the first isolation layer 400 and the second isolation layer 500 can be symmetrically arranged with respect to the light-adjusting functional layer 300 or asymmetrically arranged. For example, the first isolation layer 400 can be located on the side of the first glass substrate 100 facing away from the light-adjusting functional layer 300, and the second isolation layer 500 can be located on the side of the second glass substrate 200 facing away from the light-adjusting functional layer 300. Or the first isolation layer 400 can be located between the first glass substrate 100 and the light-adjusting functional layer 300, and the second isolation layer 500 can be located on the side of the second glass substrate 200 facing away from the light-adjusting functional layer 300.

[0056] In this embodiment, referring to Figure 2 and Figure 3 , Figure 2 shows a schematic diagram of the light path when the light-adjusting glass provided by the embodiment of the present disclosure is irradiated by sunlight. Figure 3 shows a schematic diagram of the radiation intensity of light from different sources. As Figure 2 and Figure 3 shown, after sunlight enters the light-adjusting glass, visible light passes through the first isolation layer 400 and enters the light-adjusting glass, and near-infrared light is reflected. After absorbing visible light, the liquid crystal layer 310 generates secondary thermal radiation. According to Figure 3It can be seen that the secondary thermal radiation generated by the liquid crystal layer 310 is mainly in the mid-infrared band. Part of the mid-infrared light emitted by the liquid crystal layer 310 is emitted to the external environment through the first isolation layer 400, while the other part of the mid-infrared light is emitted towards the second isolation layer 500. Moreover, the mid- and far-infrared light included in the incident sunlight from the outside also enters the second isolation layer 500 and is reflected therein, and then is emitted to the external environment through the first isolation layer 400. Thus, by using the first isolation layer 400 and the second isolation layer 500, the infrared light incident on the dimming glass can be reflected back to the external environment, making the dimming glass have good heat insulation performance. It can be understood that the first isolation layer 400 can also be a film layer that absorbs near-infrared light. Since the first isolation layer 400 is closer to the external environment, the heat generated by the first isolation layer 400 absorbing near-infrared light can be transferred to the external environment to achieve heat dissipation.

[0057] Among them, considering that the first isolation layer 400 needs to be able to reflect near-infrared light and transmit mid- and far-infrared light, materials that have a reflective effect in the near-infrared band and no reflective effect in the mid- and far-infrared bands can be selected, such as silver, gold, platinum, palladium, etc. Among them, it should be noted that silver also has a reflective effect in the mid- and far-infrared bands, but silver requires lower costs compared to gold, platinum, and palladium. Therefore, a first isolation layer 400 can be obtained by using nanoparticles with a specific shape to make it have a reflective effect only in the near-infrared band; the second isolation layer 500 needs to be able to reflect at least mid- and far-infrared light, so a silver film can be used to prepare the second isolation layer 500, or it can also be other infrared reflection film systems with high visible light transmittance; it should be noted that when both the first isolation layer 400 and the second isolation layer 500 include silver materials, the microstructure of silver in the first isolation layer 400 is different from that of silver in the second isolation layer 500, so that the first isolation layer 400 and the second isolation layer 500 achieve different isolation effects. It should be noted that the light emitted by the liquid crystal layer 310 generating secondary thermal radiation is mid- and far-infrared light and is mainly in the mid-infrared band. The second isolation layer 500 can reflect only mid- and far-infrared light or can also reflect infrared light in all bands.

[0058] For the dimming glass provided by the embodiments of the present disclosure, the first isolation layer 400 is arranged on the side close to the external environment, and the second isolation layer 500 is arranged on the side close to the interior / car. Since the first isolation layer 400 can reflect the incident near-infrared light from the outside and transmit the mid-infrared light emitted by the liquid crystal layer 310, and the second isolation layer 500 can reflect the incident infrared light from the outside and the mid-infrared light emitted by the liquid crystal layer 3310, the infrared radiation is isolated outside the dimming glass and the influence of the secondary thermal radiation generated by the liquid crystal layer absorbing visible light on the heat insulation effect of the dimming glass is avoided, improving the heat insulation performance of the dimming glass.

[0059] In one embodiment, the first isolation layer 400 at least includes silver nanorods or silver nanosheets, and the second isolation layer 500 at least includes a silver nanomembrane; wherein, the aspect ratio of the silver nanorods is 3:1 - 5:1.

[0060] In this embodiment, when the first isolation layer 400 includes silver nanorods, the aspect ratio of the silver nanorods is 3:1 - 5:1. At this time, the first isolation layer 400 formed by the silver nanorods has a good reflection effect on light in the near-infrared band. For example, the aspect ratio of the silver nanorods can be 3:1, 4:1, or 5:1, etc.; when the first isolation layer 400 includes silver nanosheets, the thickness of the silver nanosheets is about 20 nm. Among them, the first isolation layer 400 can also include conventional transparent heat-insulating materials, such as nano-ceramic materials, rare-earth materials, etc., so that the first isolation layer 400 has good light transmission performance for visible light.

[0061] When the second isolation layer 500 includes a silver nanomembrane, it can include one layer of silver nanomembrane, two layers of silver nanomembrane, or three layers of silver nanomembrane. Using the silver nanomembrane to form the second isolation layer 500 can make the second isolation layer 500 have good reflection performance for light in the near-infrared band and the mid- and far-infrared bands. Among them, the second isolation layer 500 can also include a transparent conductive layer or other infrared light-reflecting films with high visible light transmittance.

[0062] In one embodiment, the first isolation layer 400 is formed by mixing a transparent material and metal nanoparticles. The metal nanoparticles include at least one of gold nanospheres, silver nanorods or silver nanosheets, aluminum nanoparticles, copper nanoparticles, platinum nanospheres, and palladium nanospheres;

[0063] Among them, the transparent material is selected from one of pressure-sensitive adhesives doped with dyes, polyolefins, rare-earth materials, tungsten oxides, and hollow silica microspheres.

[0064] Specifically, the metal nanoparticles have good reflection performance for light in the near-infrared band. Therefore, the metal nanoparticles can be gold nanospheres, silver nanorods, platinum nanospheres, and palladium nanospheres, etc. Among them, the gold nanoparticles have a good reflection effect on light in the near-infrared band. It can be understood that various metals have a reflection effect in the band where infrared light is located, but some metals not only reflect near-infrared light. Then, the microscopic shape of the metal can be designed so that it reflects near-infrared light. For example, silver, platinum, and palladium can all reflect infrared light. By designing their nanostructures, it can be made that silver nanorods, platinum nanospheres, and palladium nanospheres only reflect near-infrared light. Among them, the metal nanoparticles can not only include silver, platinum, and palladium, etc., but also aluminum nanoparticles, copper nanoparticles, etc. This embodiment is not limited as long as it can achieve reflection of near-infrared light through shape design.

[0065] In this embodiment, the first isolation layer 400 is formed by mixing a transparent material and metal nanoparticles. The transparent material can be a material with a certain ability to absorb heat or reflect thermal radiation, such as a pressure-sensitive adhesive doped with dyes, polyolefin, rare earth material, tungsten oxide, or hollow silica microspheres. Among them, the first isolation layer 400 can include only one layer or multiple sub-film layers. When the first isolation layer 400 includes only one layer, a dispersant can be used to disperse the transparent material and metal nanoparticles in an organic solvent and then spray-coated to obtain the first isolation layer 400. When the first isolation layer 400 includes multiple sub-film layers, it can include a sub-film layer formed by the transparent material and a sub-film layer formed by metal nanoparticles. Among them, the sub-film layer formed by metal nanoparticles can be located on one side of the sub-film layer formed by the transparent material or on both opposite sides of the sub-film layer formed by the transparent material. Exemplarily, the first isolation layer 400 can include a layer of hollow silica microspheres and a thin film formed by two layers of silver nanorods, and the thin films formed by the two layers of silver nanorods are respectively located on both sides of the layer of hollow silica microspheres. Among them, the sub-film layer formed by metal nanoparticles can be a film layer formed by one type of nanoparticles or a film layer formed by multiple types of nanoparticles. For example, the film layer can be a film layer formed by silver nanorods, or a film layer formed by gold nanospheres, or a film layer formed by a mixture of silver nanorods and gold nanospheres, etc.

[0066] Specifically, taking the transparent material as hollow silica microspheres and the metal nanoparticles as silver nanorods and gold nanospheres as an example, the preparation process of the first isolation layer 400 can be as follows: Add the hollow microspheres into a container containing ethanol or isopropanol, perform preliminary stirring and dispersion, and add a dispersant (such as polyvinylpyrrolidone or sodium dodecyl sulfate) for ultrasonic treatment to uniformly disperse the hollow silica microspheres in the solvent. Then, add a binder (such as an organic resin modified with a silane coupling agent) to the dispersion liquid containing the hollow silica microspheres, and fully stir the mixture to uniformly combine the binder with the hollow silica microspheres to form a spraying liquid.

[0067] Add silver nanorods and gold nanospheres with a mass ratio between 10:1 and 50:1 to the solvent and stir. Then, add a small amount of dispersant for ultrasonic treatment to uniformly disperse the silver nanorods and gold nanospheres in the solvent. Next, add a binder to the solvent and fully stir the mixture to uniformly mix the silver nanorods and gold nanospheres with the binder.

[0068] Before spraying, first clean and dry the surface to be sprayed. Then, use a spray gun to uniformly spray the spraying liquid containing silica hollow microspheres on the surface. After the sprayed surface is dried, place it in an oven for curing so that the silica microspheres firmly adhere to the glass surface. Then, uniformly spray the spraying liquid containing silver nanorods and gold nanoparticles on the surface where the silica hollow microspheres have been sprayed well. After spraying is completed, place it in an oven for curing.

[0069] In one embodiment, metal nanoparticles are arranged in the first isolation layer 400 at a quantity of 15 - 30 per square micrometer.

[0070] Among them, when the metal nanoparticles are arranged in the first isolation layer 400 at a quantity of 15 - 30 per square micrometer, the first isolation layer 400 can ensure the light transmittance of visible light and good reflection performance for near-infrared light. Specifically, the metal nanoparticles can be arranged in the first isolation layer 400 at a quantity of 15, 20, 25, or 30 per square micrometer.

[0071] In one embodiment, the size of the metal nanoparticles is 10 - 20 nm.

[0072] Specifically, the diameter of the metal nanoparticles is 10 nm, 12 nm, 14 nm, 16 nm, 18 nm, or 20 nm. Among them, in the case where the metal nanoparticles are silver nanorods, the length of the silver nanorods is between 50 nm and 200 nm. For example, the diameter of the silver nanorod is 10 nm and the length is 50 nm; the diameter of the silver nanorod is 15 nm and the length is 75 nm; the diameter of the silver nanorod is 20 nm and the length is 100 nm, etc.

[0073] In one embodiment, referring to Figure 4 , Figure 4 shows a schematic structural diagram of the second isolation layer 500 provided by an embodiment of the present disclosure. As Figure 4 shown, the second isolation layer 500 sequentially includes, in the direction from the first glass substrate 100 to the second glass substrate 200:

[0074] a first silver layer 510, a first barrier layer 520, a second silver layer 530, a second barrier layer 540, and a third silver layer 550;

[0075] Among them, a first transparent microsphere layer 560 is included between the first silver layer 510 and the first barrier layer 520;

[0076] a second transparent microsphere layer 570 is included between the second silver layer 530 and the second barrier layer 540.

[0077] In this embodiment, the thicknesses of the first silver layer 510, the second silver layer 530, and the third silver layer 550 can be the same or different. The first silver layer 510, the second silver layer 530, and the third silver layer 550 are 8 - 15 nm. Among them, the thicknesses of the first silver layer 510, the second silver layer 530, and the third silver layer 550 are determined according to process requirements. It can be that the thickness of the first silver layer 510 is greater than that of the second silver layer 530, and the thickness of the second silver layer 530 is greater than that of the third silver layer 550. Or it can be that the thickness of the first silver layer 510 is less than that of the second silver layer 530, and the thickness of the second silver layer 530 is less than that of the third silver layer 550. It can also be that the thickness of the first silver layer 510 is greater than that of the third silver layer 550, and the thickness of the third silver layer 550 is greater than that of the second silver layer 530, etc. This embodiment does not make any restrictions. For example, the thickness of the first silver layer 510 is 8 nm, the thickness of the second silver layer 530 is 10 nm, and the thickness of the third silver layer 550 is 15 nm.

[0078] Among them, the first barrier layer 520 and the second barrier layer 540 are formed of oxides, such as zinc oxide, silicon dioxide, etc. The first barrier layer 520 and the second barrier layer 540 are used to prevent the silver layer from being oxidized and corroded, and improve the stability of the film layer. Among them, the thicknesses of both the first barrier layer 520 and the second barrier layer 540 are between 40 nm and 150 nm. The material and thickness of the first barrier layer 520 can be the same as those of the second barrier layer 540. For example, if the first barrier layer 520 is formed of zinc oxide and its thickness is 50 nm, then the second barrier layer 540 can also be formed of zinc oxide and have the same thickness of 50 nm.

[0079] In this embodiment, the second isolation layer 500 can also include two antireflection passivation layers, which are formed of zinc oxide, tin oxide, or titanium dioxide, and are respectively located on the side of the first silver layer 510 facing away from the first barrier layer 520 and on the side of the third silver layer 550 facing away from the second barrier layer 540. Using the antireflection passivation layer can improve the conductivity of the glass substrate and provide a protective effect for the first silver layer 510 and the third silver layer 550. Among them, the thickness of the antireflection passivation layer is 30 - 100 nm, and the materials and thicknesses of the two antireflection passivation layers are the same. The second isolation layer 500 can also include a titanium thin layer, which is located on the side of the first silver layer 510 facing away from the first barrier layer 520 and is used to provide an attachment basis for the subsequent film layers.

[0080] Among them, in the preparation process of the second isolation layer 500, first, a layer of zinc oxide, tin oxide, or titanium dioxide is deposited by sputtering method, then a thin titanium layer is deposited by sputtering a titanium target, and a first silver film is sputtered and deposited on the surface of the thin titanium layer to obtain the first silver layer 510. A metal oxide barrier layer is deposited above the first silver layer 510 to obtain the first barrier layer 520. Then, a silica microsphere film is coated on the first barrier layer 520 to obtain the first transparent microsphere layer 560. Then, a second silver film is plated, that is, the second silver layer 530 is formed. After that, a metal oxide barrier layer is deposited again on the second silver layer 530 to obtain the first barrier layer 520, and a silica microsphere film is coated again to obtain the second transparent microsphere layer 570. Finally, a silver film is plated on the surface of the first transparent microsphere layer 570 to obtain the third silver layer 550. Among them, a layer of zinc oxide, tin oxide, or titanium dioxide can also be sputtered and deposited on the surface of the third silver layer 550.

[0081] It can be understood that referring to Figure 5 , Figure 5 shows the reflection performance of the three-layer silver film for light of different wavelengths. Among them, curve 1 is the reflection performance of the three-layer silver film for light of different wavelengths, and curve 2 is the reflection performance of the three-layer silver film for light of different wavelengths after adding the transparent microsphere layer. As Figure 5 shown, the reflection performance of the three-layer silver film for visible light starts to rise from about 600 nm, and the reflectivity for the red and yellow light parts from near-infrared to visible light is greater than 40%. This makes the three-layer silver film not only have a high reflectivity for near-infrared light, but also have a large reflectivity for red and yellow light in visible light, which is likely to cause reflection glare and is not conducive to being applied to vehicle windows. Therefore, a first transparent microsphere layer 560 can be added between the first silver layer 510 and the second silver layer 530, and a second transparent microsphere layer 570 can be added between the second silver layer 530 and the third silver layer 550. By the first transparent microsphere layer 560 and the second transparent microsphere layer 570, the light transmission performance of the three-layer silver film for visible light is improved, while ensuring the reflection performance of the second isolation layer 500 for mid- and far-infrared light, and reducing reflection glare.

[0082] In one embodiment, the first transparent microsphere layer 560 and the second transparent microsphere layer 570 are formed by silica microspheres, and the size of the silica microspheres is 5 - 15 nm.

[0083] Among them, the silica microspheres can be hollow silica microspheres or solid silica microspheres. When the size of the silica microspheres is small, the overall thickness of the dimming glass can be reduced. When the size of the silica microspheres is large, the second isolation layer 500 has a better visible light transmission effect. For example, the size of the silica microspheres can be 5 nm, 7 nm, 9 nm, 11 nm, 13 nm, or 15 nm, etc.

[0084] In this embodiment, the size of the silica microspheres in the first transparent microsphere layer 560 may be the same as or different from the size of the silica microsphere layer in the second transparent microsphere layer 570. By way of example, the size of the silica microspheres in the first transparent microsphere layer 560 may be 5 nm and the size of the silica microspheres in the second transparent microsphere layer 570 may be 10 nm; or the size of the silica microspheres in the first transparent microsphere layer 560 may be 10 nm and the size of the silica microspheres in the second transparent microsphere layer 570 may be 5 nm; or the size of the silica microspheres in the first transparent microsphere layer 560 may be 5 nm and the size of the silica microspheres in the second transparent microsphere layer 570 may be 5 nm.

[0085] In one embodiment, the thicknesses of the first transparent microsphere layer 560 and the second transparent microsphere layer 570 are 20 - 60 nm.

[0086] In this embodiment, the thicknesses of the first transparent microsphere layer 560 and the second transparent microsphere layer 570 may be the same or different. By way of example, the thickness of the first transparent microsphere layer 560 may be 20 nm and the thickness of the second transparent microsphere layer 570 may also be 20 nm; or the thickness of the first transparent microsphere layer 560 may be 20 nm and the thickness of the second transparent microsphere layer 570 may be 40 nm; or the thickness of the first transparent microsphere layer 560 may be 60 nm and the thickness of the second transparent microsphere layer 570 may be 20 nm, etc.

[0087] In one embodiment, continuing to refer to Figure 1 , the first isolation layer 400 is located on the side of the first glass substrate 100 facing away from the light - modulating functional layer 300;

[0088] The light - modulating glass further includes a first protective film layer 600, and the first protective film layer 600 is located on the side of the first isolation layer 400 facing away from the first glass substrate 100.

[0089] In this embodiment, when the first isolation layer 400 is located on the side of the first glass substrate 100 facing away from the light - modulating functional layer 300, a first protective layer 600 is provided on the side of the first isolation layer 400 facing away from the first glass substrate 100. The first protective layer 600 is used to protect the first isolation layer 400 from the influence of the external environment and improve the product life. Among them, the first protective layer 600 may include a single film layer or multiple film layers. It can be understood that the first protective layer 600 is a transparent film layer to ensure that visible light can pass through.

[0090] In one embodiment, referring to Figure 6 or Figure 7 , Figure 6 shows a schematic structural diagram of a light - modulating glass provided by another embodiment of the present disclosure, Figure 7 shows a schematic structural diagram of a light - modulating glass provided by yet another embodiment of the present disclosure, asFigure 6 or Figure 7 As shown, the first isolation layer 400 is located between the first glass substrate 100 and the dimming functional layer 300;

[0091] The dimming glass further includes a first passivation layer 700, and the first passivation layer 700 is located between the first isolation layer 400 and the dimming functional layer 300, or between the first isolation layer 400 and the first glass substrate 100.

[0092] In this embodiment, considering that when the first isolation layer 400 is disposed on the outer surface of the first glass substrate 100, a protective layer with a relatively large thickness needs to be added on the outer surface. However, in some application scenarios, such as when the dimming glass is applied to a vehicle window, due to limited thickness and high manufacturing difficulty, the cost is likely to increase. Therefore, the first isolation layer 400 is disposed between the first glass substrate 100 and the dimming glass layer 300. Among them, the position of the first passivation layer 700 can be determined according to the distances between the first isolation layer 400 and the first glass substrate 100 and the dimming glass layer 300. For example, if the first isolation layer 400 is located on the side of the first glass substrate 100 close to the dimming functional layer 300, the first passivation layer 700 can be disposed between the first glass substrate 100 and the first isolation layer 400. At this time, other functional layers, such as a sound insulation layer, an anti-ultraviolet film, and a visible light enhancement film, are also disposed between the first isolation layer 400 and the dimming functional layer 300; and if the first isolation layer 400 is located on the side of the dimming functional layer 300 close to the first glass substrate 100, the first passivation layer 700 can be disposed between the first isolation layer 400 and the dimming functional layer 300. At this time, other functional layers, such as a sound insulation layer, an anti-ultraviolet film, and a visible light enhancement film, are disposed between the first isolation layer 400 and the first glass substrate 100.

[0093] In one embodiment, continue to refer to Figure 1 , the second isolation layer 500 is located on the side of the second glass substrate 200 facing away from the dimming functional layer 300;

[0094] The dimming glass further includes a second protective layer 800, and the second protective layer 800 is located on the side of the second isolation layer 500 facing away from the second glass substrate 200.

[0095] In this embodiment, when the second isolation layer 500 is located on the side of the second glass substrate 200 facing away from the dimming functional layer 300, the second protective layer 800 is disposed on the side of the second isolation layer 500 facing away from the second glass substrate 200. The second protective layer 800 is used to protect the second isolation layer 500 from the influence of the external environment and improve the product life. Among them, the second protective layer 800 can include a single film layer or multiple film layers. It can be understood that the second protective layer 800 is a transparent film layer to ensure that visible light can pass through.

[0096] In one embodiment, with continued reference to Figure 6 or Figure 7 , the second isolation layer 500 is located between the second glass substrate 200 and the dimming functional layer 300;

[0097] The dimming glass further includes a second passivation layer 900, and the second passivation layer 900 is located between the second isolation layer 500 and the dimming functional layer 300, or between the second isolation layer 500 and the second glass substrate 200.

[0098] In this embodiment, considering that when the second isolation layer 500 is disposed on the outer surface of the second glass substrate 200, a protective layer with a relatively large thickness needs to be added to the outer surface. However, in some application scenarios, such as applying the dimming glass to the window of a vehicle, due to limited thickness, the manufacturing difficulty is high, which easily leads to an increase in cost. Therefore, the second isolation layer 500 is disposed between the second glass substrate 200 and the dimming glass layer 300. Among them, the position of the second passivation layer 900 can be determined according to the distances between the second isolation layer 500 and the second glass substrate 200 and the dimming glass layer 300. For example, if the second isolation layer 500 is located on the side of the second glass substrate 200 close to the dimming functional layer 300, the second passivation layer 900 can be disposed between the second glass substrate 200 and the second isolation layer 500. At this time, other functional layers, such as a heat insulation structure film layer, etc., can also be included between the second isolation layer 500 and the dimming functional layer 300; while if the second isolation layer 500 is located on the side of the dimming functional layer 300 close to the second glass substrate 200, the second passivation layer 900 can be disposed between the second isolation layer 500 and the dimming functional layer 300. At this time, other functional layers, such as a heat insulation structure film layer, etc., can also be included between the second isolation layer 500 and the dimming functional layer 300.

[0099] The dimming glass provided by the embodiments of the present disclosure is configured such that a first isolation layer 400 is disposed on a side of the dimming functional layer 300 facing away from the second glass substrate 200, and a second isolation layer 500 is disposed on a side of the dimming functional layer 300 facing away from the first glass substrate 100. The first isolation layer 400 is formed by mixing a transparent material and metal nanoparticles, and the metal nanoparticles are at least one of gold nanospheres, silver nanorods, platinum nanospheres, and palladium nanospheres. The reflection performance of the first isolation layer 400 for near-infrared light is improved by the metal nanoparticles, and the visible light transmission performance of the first isolation layer 400 is ensured by the transparent material. The second isolation layer 500 includes three silver films and two transparent microsphere layers located between the three silver films. The reflection performance of the second isolation layer 500 for infrared light is ensured by the three silver films, and the visible light transmission performance of the second isolation layer 500 is improved by the transparent microsphere layers to avoid glare problems. Thus, the near-infrared light in the incident infrared light is reflected out of the dimming glass by the first isolation layer 400, and the mid- and far-infrared light in the incident infrared light is reflected out of the dimming glass by the second isolation layer 500. Moreover, the mid-infrared light generated by the absorption of visible light by the liquid crystal layer 310 in the dimming functional layer 300 can directly pass through the first isolation layer 400 or be reflected out of the dimming glass by the second isolation layer 500. Therefore, through the synergistic effect of the first isolation layer 400 and the second isolation layer 500, the heat insulation performance of the dimming glass is improved.

[0100] Next, the dimming glass provided by the embodiments of the present disclosure will be described in conjunction with specific examples:

[0101] Example 1: Referring to Figure 1 , the dimming glass includes a first glass substrate 100 and a second glass substrate 200 disposed opposite to each other, and a dimming functional layer 300 located between the first glass substrate 100 and the second glass substrate 200. Among them, the first isolation layer 400 is disposed on a side of the first glass substrate 100 facing away from the dimming functional layer 300, the second isolation layer 500 is disposed on a side of the second glass substrate 200 facing away from the dimming functional layer 300, a first protective layer 600 is disposed on a side of the first isolation layer 400 facing away from the first glass substrate 100, and a second protective layer 800 is disposed on a side of the second isolation layer 500 facing away from the second glass substrate 200.

[0102] Among them, the first isolation layer 400 includes a film layer of hollow silica microspheres with a size of 200 nm and silver nanoparticle film layers on both sides of the film layer. Among them, the silver nanoparticles include silver nanorods with a radius of 15 nm and lengths of 100 nm, 120 nm, 140 nm, 154 nm, 170 nm, 184 nm, and 200 nm. The second isolation layer 500 includes a first silver layer 510 with a thickness of 8 nm, a first barrier layer with a thickness of 40 nm, a first transparent microsphere layer 560 with a thickness of 20 nm (the first transparent microsphere layer 560 includes silica microspheres with a diameter of 15 nm), a second silver layer with a thickness of 10 nm, a first barrier layer with a thickness of 40 nm, a second transparent microsphere layer 570 with a thickness of 20 nm (the second transparent microsphere layer 570 includes silica microspheres with a diameter of 15 nm), and a third silver layer 550 with a thickness of 12 nm.

[0103] Among them, performance tests were carried out on the first isolation layer 400, and the results are as Figure 8 shown. Figure 8 It shows the light transmission performance of the first isolation layer 400 for light of different wavelengths. According to Figure 8 it can be known that when the first isolation layer 400 includes silica microspheres and silver nanorods, it has a good shielding effect on light in the near-infrared band, can greatly weaken the thermal effect of solar radiation, and has a good transmittance for visible light, which is beneficial to indoor / car lighting. In addition, the first isolation layer 400 has a high transmittance for light in the mid-infrared and far-infrared bands, which facilitates the far-infrared light emitted from the liquid crystal layer 310 and the far-infrared light reflected by the second isolation layer 500 to radiate outside the car / room, which is beneficial to heat dissipation.

[0104] Performance tests were carried out on the second isolation layer 500 and compared with a three-layer silver film in the related art, and the results are as Figure 9 shown. Figure 9 It shows the light transmission performance of the second isolation layer 500 provided in this embodiment and the three-layer silver film in the related art for light of different bands. Among them, the solid line is the transmission curve corresponding to the second isolation layer 500 provided in this embodiment, and the dotted line is the transmission curve corresponding to the three-layer silver film in the related art. According to Figure 9 it can be known that compared with the three-layer silver film in the prior art, the second isolation layer 500 adopted in this embodiment has good reflection performance for light in the mid-infrared and far-infrared bands, and the transmittance for visible light and near-infrared light is increased, which is beneficial to reducing the glare effect.

[0105] Example 2: Refer to Figure 6, the dimming glass includes a first glass substrate 100 and a second glass substrate 200 that are oppositely arranged, and a dimming functional layer 300 located between the first glass substrate 100 and the second glass substrate 200; wherein, a first isolation layer 400 is located on the side of the first glass substrate 100 close to the dimming functional layer 300, and a second isolation layer 500 is located on the side of the second glass substrate 200 close to the dimming functional layer 300. A first passivation layer 700 is provided between the first isolation layer 400 and the first glass substrate 100, and a second passivation layer 900 is provided between the second isolation layer 500 and the second glass substrate 200.

[0106] Wherein, the first isolation layer 400 includes a film layer of hollow silica microspheres with a size of 200 nm and silver nanoparticle film layers on both layers of the film layer. Among them, the radius of the silver nanoparticles is 15 nm, and the silver nanorods have a length of 150 nm. The second isolation layer 500 includes a first silver layer 510 with a thickness of 12 nm, a first barrier layer with a thickness of 40 nm, a first transparent microsphere layer 560 with a thickness of 40 nm (the first transparent microsphere layer 560 includes silica microspheres with a diameter of 10 nm), a second silver layer with a thickness of 10 nm, a first barrier layer with a thickness of 40 nm, a second transparent microsphere layer 570 with a thickness of 40 nm (the second transparent microsphere layer 570 includes silica microspheres with a diameter of 10 nm), and a third silver layer 550 with a thickness of 8 nm.

[0107] Example 3: Refer to Figure 7 , the dimming glass includes a first glass substrate 100 and a second glass substrate 200 that are oppositely arranged, and a dimming functional layer 300 located between the first glass substrate 100 and the second glass substrate 200; wherein, a first isolation layer 400 is located on the side of the dimming functional layer 300 close to the first glass substrate 100, and a second isolation layer 500 is located on the side of the dimming functional layer 300 close to the second glass substrate 200. A first passivation layer 700 is provided between the first isolation layer 400 and the dimming functional layer 300, and a second passivation layer 900 is provided between the second isolation layer 500 and the dimming functional layer 300.

[0108] Among them, the first isolation layer 400 includes a film layer of hollow silica microspheres with a size of 200 nm and silver nanoparticle film layers on both sides of the film layer. Among them, the silver nanoparticles include silver nanorods with a radius of 15 nm and a length of 120 nm and gold nanospheres with a diameter of 30 nm. The mass ratio of the silver nanorods to the gold nanospheres is 10:1. The second isolation layer 500 includes a first silver layer 510 with a thickness of 10 nm, a first barrier layer with a thickness of 40 nm, a first transparent microsphere layer 560 with a thickness of 60 nm (the first transparent microsphere layer 560 includes silica microspheres with a diameter of 5 nm), a second silver layer with a thickness of 10 nm, a first barrier layer with a thickness of 40 nm, a second transparent microsphere layer 570 with a thickness of 60 nm (the second transparent microsphere layer 570 includes silica microspheres with a diameter of 5 nm), and a third silver layer 550 with a thickness of 10 nm.

[0109] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0110] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, commodity or device including the said element.

[0111] The above has introduced in detail a kind of dimming glass provided by the present disclosure. Specific examples are used in this article to elaborate on the principle and implementation manner of the present disclosure. The description of the above embodiments is only used to help understand the method and its core idea of the present disclosure; at the same time, for those of ordinary skill in the art, according to the idea of the present disclosure, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present disclosure.

[0112] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0113] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

[0114] As used herein, the terms "one embodiment", "an embodiment", or "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. In addition, note that the examples of the phrase "in one embodiment" herein do not necessarily all refer to the same embodiment.

[0115] In the specification provided herein, a number of specific details are set forth. However, it can be understood that embodiments of the present disclosure may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0116] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present disclosure can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim listing several devices, several of these devices may be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words may be interpreted as names.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A dimming glass, characterized in that: include: A first glass substrate and a second glass substrate arranged opposite to each other; A dimming function layer is located between the first glass substrate and the second glass substrate, and the dimming function layer at least includes a liquid crystal layer; A first isolation layer, located on a side of the dimming functional layer away from the second glass substrate, and configured to reflect or absorb near-infrared light incident from the outside and mid- and far-infrared light emitted through the liquid crystal layer; The second isolation layer is located on a side of the dimming functional layer away from the first glass substrate, and is configured to reflect infrared light incident from the outside and infrared light emitted from the liquid crystal layer.

2. The dimming glass according to claim 1, characterized in that: The first isolation layer at least comprises silver nanorods or silver nanosheets, and the second isolation layer at least comprises a silver nanofilm; Wherein, the aspect ratio of the silver nanorods is 3:1-5:

1.

3. The switchable glass according to claim 1, characterized in that: The first isolation layer is formed by mixing a transparent material and metal nanoparticles, wherein the metal nanoparticles include at least one of gold nanospheres, silver nanorods, silver nanosheets, aluminum nanoparticles, copper nanoparticles, platinum nanospheres, and palladium nanospheres; Wherein, the transparent material is selected from one of dye-doped pressure-sensitive adhesive, polyolefin, rare earth material, tungsten oxide and hollow silica microsphere material.

4. The switchable glass according to claim 3, characterized in that: The metal nanoparticles are arranged in the first isolation layer in an amount of 15-30 per square micrometer.

5. The switchable glass according to claim 3, characterized in that: The size of the metal nanoparticles is 10-20 nm.

6. The switchable glass according to claim 1, characterized in that: The second isolation layer includes, in sequence from the first glass substrate to the second glass substrate: a first silver layer, a first barrier layer, a second silver layer, a second barrier layer, and a third silver layer; Wherein, a first transparent microsphere layer is included between the first silver layer and the first barrier layer; A second transparent microsphere layer is included between the second silver layer and the second barrier layer.

7. The switchable glass according to claim 6, characterized in that: The first transparent microsphere layer and the second transparent microsphere layer are formed of silica microspheres, and the size of the silica microspheres is 5-15 nm.

8. The switchable glass according to claim 6, characterized in that: The thickness of the first transparent microsphere layer and the second transparent microsphere layer is 20-60 nm.

9. The switchable glass according to claim 1, characterized in that: The first isolation layer is located on a side of the first glass substrate away from the dimming functional layer; The switchable glass further includes a first protective film layer, and the first protective film layer is located on a side of the first isolation layer away from the first glass substrate.

10. The switchable glass according to claim 1, characterized in that: The first isolation layer is located between the first glass substrate and the dimming functional layer; The dimming glass further includes a first passivation layer, and the first passivation layer is located between the first isolation layer and the dimming functional layer, or between the first isolation layer and the first glass substrate.

11. The switchable glass according to claim 1, characterized in that: The second isolation layer is located on a side of the second glass substrate away from the dimming functional layer; The switchable glass further includes a second protective film layer, and the second protective film layer is located on a side of the second isolation layer away from the second glass substrate.

12. The switchable glass according to claim 1, characterized in that: The second isolation layer is located between the second glass substrate and the dimming functional layer; The dimming glass further includes a second passivation layer, and the second passivation layer is located between the second isolation layer and the dimming functional layer, or between the second isolation layer and the second glass substrate.

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