Dimming assembly and vehicle

Abstract

The utility model relates to a dimming assembly and a vehicle. The dimming assembly comprises a first transparent substrate, a first bonding layer, a dimming layer, a second bonding layer and a second transparent substrate which are sequentially arranged in a stacked mode. Wherein the first bonding layer, the dimming layer and the second bonding layer are all shrunk inwards relative to the first transparent substrate and the second transparent substrate, the dimming assembly further comprises a sealant layer, and the sealant layer is arranged in at least part of the shrunk-inwards area and makes contact with the first transparent substrate and the second transparent substrate. The side edge of the sealing glue layer does not exceed the side edges of the first transparent substrate and the second transparent substrate, and the width of the sealing glue layer is larger than or equal to 1 mm. The dimming assembly has a good water vapor erosion resistant effect.

Description

Technical Field

[0001] The utility model relates to the field of light dimming, and particularly to a light dimming component and a vehicle. Background Art

[0002] The traditional light dimming component includes a first transparent substrate, a first adhesive layer, a light dimming layer, a second adhesive layer and a second transparent substrate which are sequentially stacked. However, when the distance between the edge of the light dimming layer and the edge of the transparent substrate is small, the traditional light dimming component has a problem of poor water vapor blocking ability. Summary of the Utility Model

[0003] Based on this, some embodiments of the present application provide a light dimming component with improved water vapor erosion resistance.

[0004] In addition, some other embodiments of the present application further provide a vehicle.

[0005] A light dimming component includes:

[0006] A first transparent substrate;

[0007] A first adhesive layer disposed on the surface of the first transparent substrate;

[0008] A light dimming layer disposed on a surface of the first adhesive layer away from the first transparent substrate;

[0009] A second adhesive layer disposed on a surface of the light dimming layer away from the first transparent substrate;

[0010] A second transparent substrate disposed on a surface of the second adhesive layer away from the first transparent substrate;

[0011] Wherein, the first adhesive layer, the light dimming layer and the second adhesive layer are all retracted relative to the first transparent substrate and the second transparent substrate. The light dimming component further includes a sealant layer, the sealant layer is disposed in at least part of the retracted area and contacts the first transparent substrate and the second transparent substrate. The side edge of the sealant layer does not exceed the side edges of the first transparent substrate and the second transparent substrate, and the width of the sealant layer is greater than or equal to 1 mm.

[0012] In some of the embodiments, the width of the sealant layer is 1 mm to 20 mm.

[0013] In some of the embodiments, the width of the sealant layer is 1 mm to 10 mm.

[0014] In some of these embodiments, the side edges of the first adhesive layer, the light-adjusting layer, and the second adhesive layer are flush, or the light-adjusting layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is less than or equal to 5 mm. The sealant layer is disposed between the first transparent substrate and the second transparent substrate, and its side edges contact the first adhesive layer and the second adhesive layer.

[0015] In some of these embodiments, the width of the sealant layer is greater than or equal to 3 mm.

[0016] In some of these embodiments, the width of the sealant layer is 3 mm to 10 mm.

[0017] In some of these embodiments, the light-adjusting layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is greater than 5 mm. A third adhesive layer is further disposed between the first adhesive layer and the second adhesive layer, and the third adhesive layer contacts the side edge of the light-adjusting layer. The sealant layer contacts the first adhesive layer, the second adhesive layer, and the third adhesive layer.

[0018] In some of these embodiments, the third adhesive layer is flush with both the first adhesive layer and the second adhesive layer; or,

[0019] The third adhesive layer is recessed relative to the first adhesive layer and the second adhesive layer. In the direction from the first adhesive layer to the third adhesive layer and in the direction from the second adhesive layer to the third adhesive layer, the width of the sealant layer increases.

[0020] In some of these embodiments, the maximum width of the sealant layer is 1 mm to 5 mm.

[0021] In some of these embodiments, the water vapor transmission rate of the sealant layer is ≤ 10 -3 g / m 2 ·d.

[0022] In some of these embodiments, the sealant layer includes one or more of a polyurethane sealant layer, a butyl rubber layer, and a POE sealant layer.

[0023] In some of these embodiments, the sealant layer includes one or more of a butyl rubber layer and a POE sealant layer.

[0024] In some of these embodiments, surface activation layers are further provided on one side surface of the sealant layer facing the first transparent substrate and facing the second transparent substrate, and on one side surface of the sealant layer facing the first adhesive layer, the second adhesive layer, and the light-adjusting layer.

[0025] A vehicle includes the above-mentioned light-adjusting assembly.

[0026] In a traditional dimming component, the dimming layer is recessed relative to the transparent substrate and the adhesive layer. To protect the dimming layer, a supplementary edge layer is provided between the side surface of the dimming layer, the first adhesive layer and the second adhesive layer. The supplementary edge layer usually uses an adhesive layer material with a thickness equivalent to that of the dimming layer. The inventor's research found that the traditional adhesive layer material has poor water vapor barrier ability. By increasing the length of the adhesive layer, a certain effect of blocking water vapor can be achieved. However, for the case where the distance between the dimming layer and the edge of the transparent substrate is small, the water vapor blocking effect is poor.

[0027] Based on this, some embodiments of the present application provide a dimming component, including a first transparent substrate, a second transparent substrate, a first adhesive layer, a dimming layer, a second adhesive layer and a sealant layer. The first adhesive layer, the dimming layer and the second adhesive layer are all recessed relative to the transparent substrate. A sealant layer with a width greater than or equal to 1 mm is provided in at least part of the recessed area. The sealant layer can prevent water vapor from eroding the inside of the dimming layer, and still has a certain anti-water vapor erosion effect when the distance between the edge of the dimming layer and the edge of the transparent substrate is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 FIG. 14 is a schematic structural diagram of a traditional dimming component;

[0030] Figure 2 FIG. 18 is a schematic diagram of a dimming component in some embodiments of the present application;

[0031] Figure 3 FIG. 22 is a schematic structural diagram of a dimming component of the first embodiment;

[0032] Figure 4 FIG. 26 is another schematic structural diagram of a dimming component of the first embodiment;

[0033] Figure 5 FIG. 30 is a schematic structural diagram of a dimming component of the second embodiment;

[0034] Figure 6 FIG. 34 is a schematic structural diagram of a dimming component of the third embodiment;

[0035] Figure 7 FIG. 38 is another schematic structural diagram of a dimming component of the third embodiment;

[0036] Figure 8Process flow chart of the preparation method of the dimming component of the first embodiment;

[0037] Figure 9 is Figure 8 a schematic diagram of the process flow chart shown;

[0038] Figure 10 a schematic diagram of a structure of the perforated support used;

[0039] Figure 11 Process flow chart of the preparation method of the dimming component of the second embodiment;

[0040] Figure 12 Process flow chart of the preparation method of the dimming component of the third embodiment;

[0041] Figure 13 Process flow chart of the preparation method of the dimming component of the fourth embodiment.

[0042] Explanation of reference numerals:

[0043] Figure 1 In, the traditional dimming component 100, the first transparent substrate 110, the first adhesive layer 120, the dimming layer 130, the second adhesive layer 140, the second transparent substrate 150, the edge filling layer 160, the first ink layer 112 and the second ink layer 152;

[0044] Figure 3 and Figure 4 In, the dimming component 200 of the first embodiment, the first transparent substrate 210, the first adhesive layer 220, the dimming layer 230, the second adhesive layer 240, the second transparent substrate 250, the sealant layer 260, the surface activation layer 270, the first shielding layer 212 and the second shielding layer 252;

[0045] Figure 5 In, the dimming component 300 of the second embodiment, the first transparent substrate 310, the first adhesive layer 320, the dimming layer 330, the second adhesive layer 340, the second transparent substrate 350, the third adhesive layer 360, the sealant layer 370, the surface activation layer 380, the first shielding layer 312 and the second shielding layer 352;

[0046] Figure 6 and Figure 7 In, the dimming component 400 of the third embodiment, the first transparent substrate 410, the first adhesive layer 420, the dimming layer 430, the second adhesive layer 440, the second transparent substrate 450, the third adhesive layer 460, the sealant layer 470, the surface activation layer 480, the first shielding layer 412 and the second shielding layer 452. Detailed implementation manners

[0047] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] In this application, "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0051] The term "optionally" etc. in this application means that in some cases, the embodiments of this application can provide certain beneficial effects. However, in the same case or other cases, other embodiments may also be optional. In addition, the description of one or more optional embodiments does not imply that other embodiments are not available, nor is it intended to exclude other embodiments from the scope of this application.

[0052] When a numerical range is disclosed in this application, the above range is considered continuous and includes the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when the range refers to integers, it includes each integer between the minimum and maximum values of the range. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise specified, all ranges disclosed in this application should be understood to include any and all sub-ranges subsumed therein.

[0053] In this application, among the technical features described in an open-ended manner, it includes a closed technical solution composed of the listed features, and also includes an open technical solution containing the listed features.

[0054] The terms "comprising" and "having" and any variations thereof in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products, or devices.

[0055] Referring to "embodiment" in this application means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of this application. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0056] As described in the background art, in a traditional dimming component, the dimming layer is recessed relative to the transparent substrate and the bonding layer, and a supplementary edge layer is provided between the side surface of the dimming layer, the first bonding layer, and the second bonding layer. The supplementary edge layer usually uses a bonding layer material with a thickness equivalent to that of the dimming layer. For example, please refer to Figure 1, the traditional dimming component 100 includes a first transparent substrate 110, a first adhesive layer 120, a dimming layer 130, a second adhesive layer 140, and a second transparent substrate 150 that are sequentially stacked. A trimming layer 160 is disposed between the first adhesive layer 120 and the second adhesive layer 140. A first ink layer 112 is further provided on a side of the first transparent substrate 110 away from the second transparent substrate 250, and a second ink layer 152 is further provided on a side of the second transparent substrate facing the first transparent substrate. The materials of the first adhesive layer 120, the second adhesive layer 140, and the trimming layer 160 are usually polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), etc. Their ability to block water vapor is poor and is suitable for cases where the edge of the dimming layer is far from the edge of the transparent substrate (usually greater than 30 mm). By increasing the length of the adhesive layer, a certain ability to block water vapor can be achieved. For example, for skylight glass, the printing area is large, and the edge of the dimming layer is far from the edge of the glass, and the traditional dimming component can usually achieve the effect of blocking water vapor. However, for cases where the edge of the dimming layer is close to the edge of the glass substrate, such as door and window glass, etc., the non-ink printing area or the ink printing area is small, and the edge of the dimming layer is close to the edge of the glass substrate. Using conventional adhesive layers such as PVB, EVA and other materials cannot meet the requirements of water and oxygen barrier for water and oxygen-sensitive dimming layers such as EC, SPD or nano-dimming LV, etc., and it is easy to be eroded by water and oxygen, resulting in edge deterioration and even loss of function.

[0057] Based on this, the present application provides a dimming component and a preparation method thereof, which can improve its ability to block water vapor.

[0058] In a first aspect, the present application provides a dimming component, including:

[0059] A first transparent substrate;

[0060] A first adhesive layer disposed on the surface of the first transparent substrate;

[0061] A dimming layer disposed on a surface of the first adhesive layer away from the first transparent substrate;

[0062] A second adhesive layer disposed on a surface of the dimming layer away from the first transparent substrate;

[0063] A second transparent substrate disposed on a surface of the second adhesive layer away from the first transparent substrate;

[0064] Wherein, the first adhesive layer, the dimming layer, and the second adhesive layer are all recessed relative to the first transparent substrate and the second transparent substrate. The dimming component further includes a sealant layer. The sealant layer is disposed in at least part of the recessed area and contacts the first transparent substrate and the second transparent substrate. The side edge of the sealant layer does not exceed the side edges of the first transparent substrate and the second transparent substrate, and the width of the sealant layer is greater than or equal to 1 mm.

[0065] The above dimming component includes a first transparent substrate, a second transparent substrate, a first adhesive layer, a dimming layer, a second adhesive layer, and a sealant layer. The first adhesive layer, the dimming layer, and the second adhesive layer are all recessed relative to the transparent substrate, and a sealant layer with a width greater than or equal to 1 mm is provided in at least part of the recessed area. The sealant layer can prevent water vapor from eroding the inside of the dimming layer, and still has a certain anti-water-vapor erosion effect when the distance between the edge of the dimming layer and the edge of the transparent substrate is small.

[0066] In this article, contact includes direct contact and indirect contact. For example, the sealant layer contacting the first transparent substrate includes the sealant layer directly contacting the first transparent substrate without any other structure between them, and also includes the case where the sealant layer and the first transparent substrate are in contact through one or more other structures, such as the surface activation layer mentioned below. The contact between the other two layers has a similar meaning and will not be elaborated further.

[0067] In some embodiments, the first transparent adhesive substrate and the second transparent substrate are each independently selected from one of glass and polycarbonate plates (PC). In some of these embodiments, the surface on the side of the first transparent substrate away from the second transparent substrate is the incident surface, that is, the first transparent substrate faces the direct sunlight surface.

[0068] In some embodiments, a first shielding layer is provided on at least one surface of the first transparent substrate. The edge of the first shielding layer is flush with the edge of the first transparent substrate, and the width of the first shielding layer is less than or equal to 30 mm. Optionally, the width of the first shielding layer is 10 mm to 30 mm.

[0069] In some of these embodiments, there are two first shielding layers, and the two first shielding layers are spaced apart and symmetrically arranged at both ends of the first transparent substrate.

[0070] In one of the embodiments, the first shielding layer is provided on the surface of the first transparent substrate facing the second transparent substrate. It can be understood that in another embodiment, the first shielding layer can also be provided on the surface of the first transparent substrate away from the second transparent substrate, or the first shielding layer is provided on both the surface of the first transparent substrate facing and away from the second transparent substrate.

[0071] In one of the embodiments, the first shielding layer is an opaque layer relative to the first transparent substrate. For example, the first shielding layer can be, but is not limited to, an ink layer.

[0072] In some embodiments, a second shielding layer is provided on at least one surface of the second transparent substrate. The edge of the second shielding layer is flush with the edge of the second transparent substrate, and the width of the second shielding layer is less than or equal to 30 mm. Optionally, the width of the second shielding layer is 10 mm to 30 mm.

[0073] In some of these embodiments, there are two second shielding layers, and the two second shielding layers are spaced apart and symmetrically arranged at both ends of the first transparent substrate.

[0074] In one of the embodiments, the second shielding layer is disposed on the surface of the second transparent substrate facing the first transparent substrate. It can be understood that, in another embodiment, the second shielding layer can also be disposed on the surface of the second transparent substrate away from the first transparent substrate, or, second shielding layers are provided on both the surface of the second transparent substrate facing and away from the first transparent substrate.

[0075] In one of the embodiments, the second shielding layer is an opaque layer with respect to the second transparent substrate. For example, the second shielding layer can be, but is not limited to, an ink layer.

[0076] It can be understood that the width of the first shielding layer can be the same as or different from the width of the second shielding layer. Optionally, the width of the first shielding layer is the same as the width of the second shielding layer.

[0077] In some embodiments, the first adhesive layer and the second adhesive layer are each independently one of a PVB adhesive layer and an EVA adhesive layer. Specifically, the PVB adhesive layer and the EVA adhesive layer can be ordinary adhesive layers or adhesive layers having an ultraviolet isolation effect. In some of these embodiments, the PVB adhesive layer and the EVA adhesive layer can be high-ultraviolet isolation adhesive layers. For example, the UV cut-off wavelength band ≥ 390 nm and the isolation rate ≥ 99%. Optionally, the UV cut-off wavelength band is 400 nm.

[0078] In some of these embodiments, the first adhesive layer is closer to the first transparent substrate than the second adhesive layer. The first adhesive layer is selected from one of a PVB adhesive layer having an ultraviolet isolation effect and an EVA adhesive layer having an ultraviolet isolation effect, and the second adhesive layer is selected from one of an ordinary PVB adhesive layer without an ultraviolet isolation effect and an ordinary EVA adhesive layer without an ultraviolet isolation effect.

[0079] In some embodiments, the dimming layer is selected from one of an EC (electrochromic) dimming layer, an SPD (suspended particle) dimming layer, an LV nanolight valve dimming layer, and a dye liquid crystal dimming layer (abbreviated as LC or DLC). Specifically, electrodes are provided in the dimming layer.

[0080] In some embodiments, the dimming layer is recessed 3 mm to 30 mm with respect to the first transparent substrate and the second transparent substrate. Optionally, the dimming layer is recessed 3 mm to 15 mm with respect to the first transparent substrate and the second transparent substrate. Optionally, the dimming layer is recessed 3 mm to 10 mm with respect to the first transparent substrate and the second transparent substrate. The specific recessed distance can be adjusted according to the use of the dimming component.

[0081] In some embodiments, the water vapor transmission rate of the sealant layer ≤ 10-3 g / m 2 ·d (grams per square meter per day). Among them, the test reference standard for water vapor transmission rate is ISO 15106-3.

[0082] Specifically, the sealant layer includes one or more of a polyurethane sealant layer, a butyl rubber layer, and a POE sealant layer. Optionally, the sealant layer includes one or more of a butyl rubber layer and a POE sealant layer. It can be understood that only several common sealant layers are given above, but it is not limited thereto.

[0083] In some embodiments, the width of the sealant layer is greater than or equal to 1 mm. For example, the width of the sealant layer can be, but is not limited to, 1 mm, 2 mm, 3 mm, 5 mm, 8 mm, 10 mm, 12 mm, 15 mm, 18 mm, 20 mm, 25 mm, 30 mm, or the range formed by any two of these values. It can be understood that the width of the sealant layer is less than or equal to the width of the retracted areas of the first adhesive layer, the light modulating layer, and the second adhesive layer relative to the first transparent substrate and the second transparent substrate. The specific width of the sealant layer can be adjusted according to the width of the retracted area. In some of these embodiments, the width of the sealant layer is 1 mm - 20 mm, 1 mm - 15 mm, or 1 mm - 10 mm, etc.

[0084] In some embodiments, the thickness of the sealant layer is comparable to the total thickness of the first adhesive layer, the light modulating layer, and the second adhesive layer. Among them, being comparable in thickness means that the absolute value of the difference between the thickness of the sealant layer and the total thickness of the first adhesive layer, the light modulating layer, and the second adhesive layer is ≤ 0.2 mm.

[0085] In some embodiments, a surface activation layer is further provided on the surfaces of the sealant layer facing the first transparent substrate and the second transparent substrate, and on the sides of the sealant layer facing the first adhesive layer, the second adhesive layer, and the light modulating layer. By providing the surface activation layer, it is beneficial to improve the adhesion between the sealant layer and the first transparent substrate, the second transparent substrate, and the adhesive layer, and further improve the anti-water vapor erosion effect.

[0086] In some of these embodiments, the material of the surface activation layer includes a surface activator.

[0087] In some embodiments, the sealant layer is provided on three sides of the light modulating assembly. For example, please refer to Figure 2 , an electrode wire is provided at the bottom side of the light modulating assembly, and there is no need to provide a sealant layer here. It is only necessary to provide a sealant layer on the other three sides.

[0088] The following elaborates in detail on the light modulating assembly and its structure in combination with different setting methods of the sealant layer:

[0089] In the first embodiment, the first adhesive layer, the light-adjusting layer, and the second adhesive layer are flush, or the light-adjusting layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is less than or equal to 5 mm. The sealant layer is disposed between the first transparent substrate and the second transparent substrate, and the side edges thereof contact the first adhesive layer and the second adhesive layer.

[0090] Specifically, please refer to Figure 3 , the light-adjusting assembly 200 includes a first transparent substrate 210, a first adhesive layer 220, a light-adjusting layer 230, a second adhesive layer 240, and a second transparent substrate 250 that are sequentially stacked. The first adhesive layer 220, the light-adjusting layer 230, and the second adhesive layer 240 are all recessed relative to the first transparent substrate 210 and the second transparent substrate 250. A sealant layer 260 is further disposed between the first transparent substrate 210 and the second transparent substrate 250. The sealant layer 260 contacts the side edges of the first adhesive layer 220 and the second adhesive layer 240, and the side edges do not extend beyond the side edges of the first transparent substrate 210 and the second transparent substrate 250. A first shielding layer 212 is provided on the side of the first transparent substrate 210 away from the second transparent substrate 250, and a second shielding layer 252 is provided on the side of the second transparent substrate facing the first transparent substrate 250.

[0091] Through the above settings, it is beneficial to improve the water vapor erosion resistance effect of the light-adjusting assembly 200.

[0092] In some of these embodiments, the light-adjusting layer 230 is flush with the first adhesive layer 220 and the second adhesive layer 240, or the light-adjusting layer 230 is recessed relative to the first adhesive layer 220 and the second adhesive layer 240, and the recessed distance is less than or equal to 5 mm. For the case where the light-adjusting layer 230 has a low sensitivity to water vapor, for example, the light-adjusting layer 230 is a PDLC light-adjusting layer, which is insensitive to water and oxygen and does not react with the sealant layer 260. At this time, the light-adjusting layer 230 can be set to be flush with the first adhesive layer 220 and the second adhesive layer 240. For the case where the light-adjusting layer 230 is sensitive to water and oxygen, for example, the light-adjusting layer 230 is an EC light-adjusting layer, by making the light-adjusting layer 230 recess relative to the first adhesive layer 220 and the second adhesive layer 240 by less than or equal to 5 mm, during the lamination process, the first adhesive layer 220 and the second adhesive layer 240 soften and wrap the light-adjusting layer 230, further improving the waterproof and oxygen erosion resistance effect of the light-adjusting assembly 200.

[0093] In some of these embodiments, the sealant layer 260 fills the entire area where the first adhesive layer 220 and the second adhesive layer 240 are recessed relative to the first transparent substrate 210 and the second transparent substrate 250. Specifically, the width of the area where the first adhesive layer 220 and the second adhesive layer 240 are recessed relative to the first transparent substrate 210 and the second transparent substrate 250 is greater than or equal to 3 mm. At this time, the width of the sealant layer 260 is greater than or equal to 3 mm.

[0094] It can be understood that the width of the sealant layer 260 can be adjusted according to the widths of the first adhesive layer 220 and the second adhesive layer 240 relative to the recessed areas of the first transparent substrate 210 and the second transparent substrate 250. For example, the widths of the first adhesive layer 220 and the second adhesive layer 240 relative to the recessed areas of the first transparent substrate 210 and the second transparent substrate 250 are 3 mm to 15 mm, and the width of the sealant layer 260 is 3 mm to 15 mm. Alternatively, the widths of the first adhesive layer 220 and the second adhesive layer 240 relative to the recessed areas of the first transparent substrate 210 and the second transparent substrate 250 are 3 mm to 10 mm, and the width of the sealant layer 260 is 3 mm to 10 mm.

[0095] It can be understood that in some other embodiments, the sealant layer 260 can also be filled in partial areas where the first adhesive layer 220 and the second adhesive layer 240 are recessed relative to the first transparent substrate 210 and the second transparent substrate 250, as long as the width of the sealant layer 260 is 3 mm to 10 mm. Optionally, the width of the sealant layer 260 is 6 mm.

[0096] Please refer to Figure 4 together. In some embodiments, the light dimming assembly 200 further includes a surface activation layer 270. The surface activation layer 270 is disposed on one side surface of the sealant layer 260 facing the first transparent substrate 210 and the second transparent substrate 250, and on one side surface of the sealant layer 260 facing the first adhesive layer 220, the second adhesive layer 240, and the light dimming layer 230.

[0097] In Figure 3 and Figure 4 , the side surfaces of the light dimming layer 230 and the side surfaces of the first adhesive layer 220 and the second adhesive layer 240 are sealed by the sealant layer 260, which is beneficial to improving the water vapor erosion resistance effect.

[0098] In the second embodiment, the light dimming layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is greater than 5 mm. A third adhesive layer is further provided between the first adhesive layer and the second adhesive layer. The third adhesive layer contacts the side edges of the light dimming layer, and the sealant layer contacts the first adhesive layer, the second adhesive layer, and the third adhesive layer. The first adhesive layer, the second adhesive layer, and the third adhesive layer are flush.

[0099] Specifically, please refer to Figure 5, the dimming component 300 includes a first transparent substrate 310, a first adhesive layer 320, a dimming layer 330, a second adhesive layer 340, and a second transparent substrate 350 that are sequentially stacked. The dimming layer 330 is recessed relative to the first adhesive layer 320 and the second adhesive layer 340, and the recessed distance is greater than 5 mm. A third adhesive layer 360 is further provided between the first adhesive layer 320 and the second adhesive layer 340. The third adhesive layer 360 contacts the side edge of the dimming layer 330. The third adhesive layer 360 is flush with both the first adhesive layer 320 and the second adhesive layer 340, and is recessed relative to both the first transparent substrate 310 and the second transparent substrate 350. A sealant layer 370 is also provided between the first transparent substrate 310 and the second transparent substrate 350. The sealant layer 370 contacts the first adhesive layer 320, the second adhesive layer 340, and the third adhesive layer 360. A first shielding layer 312 is provided on the side of the first transparent substrate 310 away from the second transparent substrate 350, and a second shielding layer 352 is provided on the side of the second transparent substrate 350 facing the first transparent substrate 310.

[0100] Specifically, the width of the sealant layer 370 is 1 mm to 5 mm.

[0101] In Figure 5 , the third adhesive layer 360 is flush with both the first adhesive layer 320 and the second adhesive layer 340. In the direction from the first adhesive layer 320 to the third adhesive layer 360 and in the direction from the second adhesive layer 340 to the third adhesive layer 360, the width of the sealant layer 370 is equal.

[0102] In some embodiments, the third adhesive layer 360 is one of a PVB adhesive layer and an EVA adhesive layer. It can be understood that the third adhesive layer 360 can be the same as or different from the first adhesive layer 320 and the second adhesive layer 340.

[0103] In Figure 5 , the dimming component 300 further includes a surface activation layer 380. It can be understood that in some other embodiments, the surface activation layer 380 can also be omitted.

[0104] Figure 5 The difference between the dimming component 300 in Figure 3 and Figure 4 and the dimming component 200 in Figure 5 is that in Figure 5 , the dimming layer 330 is recessed by a relatively large distance relative to the first adhesive layer 320 and the second adhesive layer 340. A third adhesive layer 360 is provided in the region where the dimming layer 330 is recessed relative to the first adhesive layer 320 and the second adhesive layer 340. On the one hand, it further improves the effect of resisting water and oxygen erosion. On the other hand, during the lamination process, it protects the dimming layer 330.

[0105] In the third embodiment, the dimming layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is greater than 5 mm. A third adhesive layer is further provided between the first adhesive layer and the second adhesive layer. The third adhesive layer contacts the side edge of the dimming layer. The sealant layer contacts the first adhesive layer, the second adhesive layer and the third adhesive layer. The third adhesive layer is recessed relative to the first adhesive layer and the second adhesive layer. In the direction from the first adhesive layer to the third adhesive layer and in the direction from the second adhesive layer to the third adhesive layer, the width of the sealant layer increases.

[0106] Specifically, please refer to Figure 6 and Figure 7 , the dimming component 400 includes a first transparent substrate 410, a first adhesive layer 420, a dimming layer 430, a second adhesive layer 440, and a second transparent substrate 450 that are sequentially stacked. The dimming layer 430 is recessed relative to the first adhesive layer 420 and the second adhesive layer 440, and the recessed distance is greater than 5 mm. A third adhesive layer 460 is further provided between the first adhesive layer 420 and the second adhesive layer 440. The third adhesive layer 460 contacts the side edge of the dimming layer 430. Both the first adhesive layer 420 and the second adhesive layer 440 are recessed relative to the first transparent substrate 410 and the second transparent substrate 450. A sealant layer 470 is further provided between the first transparent substrate 410 and the second transparent substrate 450. The sealant layer 470 contacts the first adhesive layer 420, the second adhesive layer 440, and the third adhesive layer 460. The third adhesive layer 460 is recessed relative to the first adhesive layer 420 and the second adhesive layer 440. In the direction from the first adhesive layer 420 to the third adhesive layer 460 and in the direction from the second adhesive layer 440 to the third adhesive layer 460, the width of the sealant layer 470 increases.

[0107] Specifically, the maximum width of the sealant layer 470 is 1 mm to 5 mm. It can be understood that the maximum width of the sealant layer 470 is the width of the sealant layer 470 disposed on the side of the dimming layer 430.

[0108] In Figure 6 and Figure 7 , the dimming component 400 is further provided with a surface activation layer 480. It can be understood that in some other embodiments, the surface activation layer 480 can also be omitted.

[0109] It can be understood that the above Figure 6 and Figure 7 only show schematic diagrams of two different shapes of the sealant layer, but are not limited thereto. The shape of the sealant layer can also be adjusted according to the actual situation, as long as the maximum width of the sealant layer can meet 1 mm to 5 mm.

[0110] In Figures 5 - 7 , a third adhesive layer and a sealant layer are provided on the side of the dimming layer. By using the cooperation of the two, the moisture resistance effect of the dimming component is improved.

[0111] In a second aspect, the present application provides a method for preparing a dimming component, including the following steps:

[0112] Obtain a stacked component, which includes a first transparent substrate, a first adhesive layer, a dimming layer, a second adhesive layer, and a second transparent substrate stacked in sequence;

[0113] Shrink the dimming layer, the first adhesive layer, and the second adhesive layer in the stacked component relative to the first transparent substrate and the second transparent substrate;

[0114] Set a sealant layer between the first transparent substrate and the second transparent substrate of the stacked component, so that the sealant layer fills at least part of the shrunk area and contacts the first transparent substrate and the second transparent substrate. The side edges of the sealant layer do not exceed the side edges of the first transparent substrate and the second transparent substrate, and the width of the sealant layer is greater than or equal to 1 mm, thereby obtaining a dimming component.

[0115] In this article, stacking in sequence is only used to represent the stacking order between the layers. Other layers may also be stacked between the layers, without special limitation.

[0116] In some embodiments, in the step of shrinking the dimming layer, the first adhesive layer, and the second adhesive layer in the stacked component relative to the first transparent substrate and the second transparent substrate, the first adhesive layer, the dimming layer, and the second adhesive layer are flush or the dimming layer shrinks relative to the first adhesive layer and the second adhesive layer, and the shrinking distance is less than or equal to 5 mm;

[0117] The step of setting a sealant layer between the first transparent substrate and the second transparent substrate of the stacked component so that the sealant layer fills at least part of the shrunk area includes:

[0118] Set a perforated support between the first transparent substrate and the second transparent substrate, so that the perforated support contacts the side edges of the first adhesive layer and the second adhesive layer;

[0119] Press the stacked component provided with the perforated support;

[0120] After the pressing is completed, remove the perforated support and fill the sealant layer in the area where the perforated support is located.

[0121] In other embodiments, in the step of shrinking the dimming layer, the first adhesive layer, and the second adhesive layer in the stacked component relative to the first transparent substrate and the second transparent substrate, the dimming layer shrinks relative to the first adhesive layer and the second adhesive layer, and the shrinking distance is greater than 5 mm;

[0122] The step of setting a sealant layer between the first transparent substrate and the second transparent substrate so that the sealant layer fills at least part of the shrunk area includes:

[0123] A third adhesive layer is disposed between the first adhesive layer and the second adhesive layer, such that the third adhesive layer is flush with the first adhesive layer and the second adhesive layer;

[0124] A perforated support member is disposed between the first transparent substrate and the second transparent substrate, such that the perforated support member is in contact with the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer, to obtain a stacked member;

[0125] The stacked member provided with the third adhesive layer and the perforated support member is pressed;

[0126] After the pressing is completed, the perforated support member is removed, and a sealant layer is filled in the region where the perforated support member is located.

[0127] In some other embodiments, the method for preparing the dimming component includes:

[0128] A stacked member is obtained, such that the first adhesive layer and the second adhesive layer in the stacked member are flush with the first transparent substrate and the second transparent substrate, and the dimming layer is recessed relative to the first adhesive layer and the second adhesive layer;

[0129] A third adhesive layer is disposed between the first adhesive layer and the second adhesive layer, such that the third adhesive layer contacts the side edge of the dimming layer and is flush with the first adhesive layer and the second adhesive layer;

[0130] The stacked member provided with the third adhesive layer is pressed;

[0131] After the pressing is completed, a part of the first adhesive layer, a part of the second adhesive layer, and a part of the third adhesive layer are removed, such that the first adhesive layer, the second adhesive layer, and the third adhesive layer are all recessed relative to the first transparent substrate and the second transparent substrate;

[0132] A sealant layer is filled in the removed regions of the first adhesive layer, the second adhesive layer, and the third adhesive layer to prepare the dimming component.

[0133] In some other embodiments, in the step of making the dimming layer, the first adhesive layer, and the second adhesive layer in the stacked member all recessed relative to the first transparent substrate and the second transparent substrate, the dimming layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is greater than 5 mm;

[0134] The step of disposing a sealant layer between the first transparent substrate and the second transparent substrate, such that the sealant layer fills at least part of the recessed region, includes:

[0135] A third adhesive layer is disposed between the first adhesive layer and the second adhesive layer, such that the third adhesive layer is recessed relative to the first adhesive layer and the second adhesive layer;

[0136] A perforated support member is disposed between the first transparent substrate and the second transparent substrate, such that the perforated support member is in contact with the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer;

[0137] Laminating a stack having a third adhesive layer and a perforated support member;

[0138] After the lamination is completed, the perforated support member is removed, and a sealant layer is filled in the area where the perforated support member is located.

[0139] The preparation methods of the above-mentioned several dimming components will be elaborated in detail below in combination with different structures of the dimming components.

[0140] Specifically, in the first embodiment, the structure of the dimming component is as Figure 3 shown, please refer to Figure 8 together. The preparation method of the dimming component includes the following steps:

[0141] Step S510: Stack a first transparent substrate, a first adhesive layer, a dimming layer, a second adhesive layer, and a second transparent substrate in sequence to obtain a stack, such that the first adhesive layer, the dimming layer, and the second adhesive layer are flush or the dimming layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is less than or equal to 5 mm, and both the first adhesive layer and the second adhesive layer are recessed relative to the first transparent substrate and the second transparent substrate.

[0142] Step S520: A perforated support member is arranged between the first transparent substrate and the second transparent substrate, and the perforated support member is in contact with the side edges of the first adhesive layer and the second adhesive layer.

[0143] Step S530: Laminating the stack having the perforated support member.

[0144] Step S540: After the lamination is completed, the perforated support member is removed.

[0145] Step S550: A sealant layer is filled in the area where the perforated support member is located to prepare a dimming component.

[0146] By using the above method, it is possible to prepare a dimming component in which the dimming layer sensitive to water and oxygen is close to the glass edge (≤30 mm, further ≤20 mm), such as a door glass. In addition, when laminating and encapsulating, the sizes of the adhesive layer and the dimming layer are comparable (that is, the side edges of the first adhesive layer, the dimming layer, and the second adhesive layer are flush or the dimming layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is less than or equal to 5 mm), which is beneficial to reducing the edge compensation process of the dimming layer and improving the efficiency. And when laminating and encapsulating, a perforated support member with equal thickness is filled in the recessed area to avoid the thickness difference at the edge of the transparent substrate during the processing, and at the same time, local stress (fragility) of the glass is formed due to the thickness difference. And by using the perforated support member, it is beneficial to the discharge of gas during the laminating process.

[0147] Figure 8 is a schematic flow chart of the preparation method of the dimming component according to an embodiment of the present application. It should be understood that althoughFigure 8 Each step in the shown flowchart is displayed in sequence according to the indication of the arrow. However, these steps do not necessarily proceed in the order indicated by the arrow. Unless otherwise clearly stated in this text, there is no strict order restriction for the execution of these steps. They can be executed in other orders, and Figure 8 at least a part of the steps in

[0148] In some embodiments, please refer to Figure 9 together with Figure 9 which is Figure 8 a schematic diagram of the preparation process flowchart of the dimming component shown. Figure 9 In

[0149] it can be understood that in Figure 9 the shape of the holes in the perforated support 280 is triangular, but it is not limited to this. Please refer to Figure 10 together with Figure 10 which gives longitudinal sectional views of several common structures of the perforated support. Figure 10 In

[0150] In some embodiments, the material of the perforated support includes, but is not limited to, Teflon. For example, the perforated support can be, but is not limited to, a perforated Teflon plug.

[0151] In some embodiments, the lamination process can be a commonly used one in the art. For example, the lamination process includes primary pressing and high-pressure pressing.

[0152] In some embodiments, the thickness of the sealant layer is comparable to the total thickness of the first adhesive layer, the light-adjusting layer, and the second adhesive layer. Herein, "comparable in thickness" means that the absolute value of the difference between the thickness of the sealant layer and the total thickness of the first adhesive layer, the light-adjusting layer, and the second adhesive layer is ≤ 0.2 mm.

[0153] In some embodiments, it further includes the step of scraping the glue. Specifically, the excess sealant is removed by means of flat scraping or U-shaped glue scraping.

[0154] In some embodiments, the sealant layer is filled within 8 hours after lamination.

[0155] It can be understood that in the actual process, after laminating the sheets, the three sides of the transparent substrate (where the distance between the light-adjusting layer and the edge of the transparent substrate is ≤ 30 mm, and further ≤ 20 mm) are sealed with a sealant layer.

[0156] In some embodiments, before the step of filling the sealant layer in the area where the perforated support is located, it further includes filling a surface activation layer in the area where the perforated support is located. By first filling the surface activation layer and then filling the sealant layer, it is beneficial to improve the adhesion between the sealant layer and the first transparent substrate, the second transparent substrate, and the adhesive layer, and further improve the anti-water vapor erosion effect.

[0157] In the second embodiment, the structure of the light-adjusting component is as Figure 5 shown. Please refer to Figure 11 simultaneously. The preparation method of the light-adjusting component includes the following steps:

[0158] Step S610: Stack the first transparent substrate, the first adhesive layer, the light-adjusting layer, the second adhesive layer, and the second transparent substrate in sequence to obtain a stacked component, such that the light-adjusting layer is retracted relative to the first adhesive layer and the second adhesive layer, the retraction distance is greater than 5 mm, and the first adhesive layer and the second adhesive layer are retracted relative to the first transparent substrate and the second transparent substrate.

[0159] Step S620: Dispose a third adhesive layer between the first adhesive layer and the second adhesive layer to make the third adhesive layer flush with the first adhesive layer and the second adhesive layer.

[0160] Step S630: Dispose a perforated support between the first transparent substrate and the second transparent substrate to make the perforated support contact the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer.

[0161] Step S640: Press the laminate provided with the third adhesive layer and the perforated support member.

[0162] Step S650: After the pressing is completed, remove the perforated support member.

[0163] Step S660: Fill the area where the perforated support member is located with a sealant layer to prepare a light-adjusting component.

[0164] The difference between the preparation method of the light-adjusting component in the second embodiment and the preparation method of the light-adjusting component in the first embodiment is that before the step of arranging the perforated support member between the first transparent substrate and the second transparent substrate, a third adhesive layer is further provided between the first adhesive layer and the second adhesive layer. Other steps are the same as those in the first embodiment and will not be elaborated here.

[0165] In some embodiments, the thickness of the third adhesive layer is comparable to the thickness of the light-adjusting layer. Herein, "comparable in thickness" means that the absolute value of the difference between the thickness of the third adhesive layer and the thickness of the light-adjusting layer ≤ 0.2 mm.

[0166] In the third embodiment, the structure of the light-adjusting component is as Figure 6 and Figure 7 shown. Please refer to Figure 12 together. The preparation method of the light-adjusting component in the third embodiment includes the following steps:

[0167] Step S710: Stack the first transparent substrate, the first adhesive layer, the light-adjusting layer, the second adhesive layer, and the second transparent substrate in sequence to obtain a laminate, such that the first transparent substrate, the first adhesive layer, the second adhesive layer, and the second transparent substrate are flush, and the light-adjusting layer is recessed relative to the first adhesive layer and the second adhesive layer.

[0168] Step S720: Arrange a third adhesive layer between the first adhesive layer and the second adhesive layer, such that the third adhesive layer contacts the side edges of the light-adjusting layer and is flush with the first adhesive layer and the second adhesive layer.

[0169] Step S730: Press the laminate provided with the third adhesive layer.

[0170] Step S740: After the pressing is completed, remove part of the first adhesive layer, part of the second adhesive layer, and part of the third adhesive layer, such that the first adhesive layer, the second adhesive layer, and the third adhesive layer are all recessed relative to the first transparent substrate and the second transparent substrate.

[0171] Step S750: Fill the removed areas of the first adhesive layer, the second adhesive layer, and the third adhesive layer with a sealant layer to prepare a light-adjusting component.

[0172] In some embodiments, a hooking knife is used to remove part of the first adhesive layer, part of the second adhesive layer, and part of the third adhesive layer.

[0173] In some embodiments, before the step of filling the sealant layer in the removal areas of the first adhesive layer, the second adhesive layer, and the third adhesive layer, it further includes filling a surface activation layer in the removal areas of the first adhesive layer, the second adhesive layer, and the third adhesive layer. By first filling the surface activation layer and then filling the sealant layer, it is beneficial to improve the adhesion between the sealant layer and the first transparent substrate, the second transparent substrate, and the adhesive layer, and further improve the effect of resisting water vapor erosion.

[0174] The preparation method of the dimming component of the above third embodiment can adopt the traditional laminating and encapsulating process of the dimming component without changing the existing process and production line. After laminating, in the packaging process, use a hook knife to trim part of the adhesive layer, and then fill the sealant layer in the removed adhesive layer area to seal and protect the dimming component inside from the erosion of water (oxygen) vapor, and finally achieve the product requirement that the distance between the dimming layer and the edge of the transparent substrate is narrow.

[0175] It can be understood that in some other embodiments, the structure of the dimming component is as Figure 5 shown. The preparation method of the dimming component can also adopt the preparation method of the above third embodiment. At this time, in step S740, after the pressing is completed, when removing part of the first adhesive layer, part of the second adhesive layer, and part of the third adhesive layer so that the first adhesive layer, the second adhesive layer, and the third adhesive layer are all retracted relative to the first transparent substrate and the second transparent substrate, it is only necessary that the areas of the removed first adhesive layer, the removed second adhesive layer, and the removed third adhesive layer are the same.

[0176] In the fourth embodiment, the structure of the dimming component is as Figure 6 and Figure 7 shown. Please refer to Figure 13 together. The preparation method of the dimming component of the fourth embodiment includes the following steps:

[0177] Step S810: Stack the first transparent substrate, the first adhesive layer, the dimming layer, the second adhesive layer, and the second transparent substrate in sequence to obtain a stacked component, such that the dimming layer is retracted relative to the first adhesive layer and the second adhesive layer, the retraction distance is greater than 5 mm, and the first adhesive layer and the second adhesive layer are retracted relative to the first transparent substrate and the second transparent substrate.

[0178] Step S820: Set a third adhesive layer between the first adhesive layer and the second adhesive layer, such that the third adhesive layer is retracted relative to both the first adhesive layer and the second adhesive layer.

[0179] Step S830: Set a perforated support between the first transparent substrate and the second transparent substrate, such that the perforated support contacts the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer.

[0180] Step S840: Press the laminate provided with the third adhesive layer and the perforated support member.

[0181] Step S850: After the pressing is completed, remove the perforated support member.

[0182] Step S860: Fill the sealant layer in the area where the perforated support member is located to prepare the dimming component.

[0183] It can be understood that in Step S820, the third adhesive layer is retracted relative to both the first adhesive layer and the second adhesive layer, that is, the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer are irregular. In Step S830, by providing a shaped perforated support member, the perforated support member can be made to contact the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer. The specific shape of the perforated support member can be adjusted according to the shape of the side edges of the first adhesive layer, the second adhesive layer, and the third adhesive layer.

[0184] In a third aspect, the present application provides a vehicle, including the dimming component of the first aspect above or a dimming component prepared by the preparation method of the dimming component of the second aspect above.

[0185] In some embodiments, the dimming component can be used as the door glass or the sunroof glass of the vehicle.

[0186] In order to make the purpose and advantages of the present application clearer, the following further details the dimming component of the present application and its effects with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and shall not be used to limit the present application. The following embodiments do not include other components except inevitable impurities without special instructions. The drugs and instruments used in the embodiments are all conventional selections in the art unless otherwise specified. The experimental methods without specific conditions in the embodiments are carried out according to conventional conditions, such as the conditions described in the literature, books, or the methods recommended by the manufacturers.

[0187] Example 1

[0188] This embodiment provides a dimming component, the structure is as Figure 3As shown in the figure, the dimming component 200 includes a first transparent substrate 210, a first adhesive layer 220, a dimming layer 230, a second adhesive layer 240, and a second transparent substrate 250 that are sequentially stacked. The dimming layer 230 is flush with the first adhesive layer 220 and the second adhesive layer 240, and is recessed relative to the first transparent substrate 210 and the second transparent substrate 250 by a distance of 5 mm. A sealant layer 260 is also provided between the first transparent substrate 210 and the second transparent substrate 250. Among them, both the first transparent substrate 210 and the second transparent substrate 220 are glass, and both the first adhesive layer 220 and the second adhesive layer 240 are PVB adhesive layers. The dimming layer 230 is an EC dimming layer, and the sealant layer 260 is butyl rubber. The width of the sealant layer 260 is 5 mm.

[0189] Example 2

[0190] This example provides a dimming component, which is similar to the dimming component in Example 1. The difference is that the first adhesive layer 220, the dimming layer 230, and the second adhesive layer 240 are all recessed relative to the first transparent substrate 210 and the second transparent substrate 250 by a distance of 10 mm, and the width of the sealant layer 260 is 10 mm.

[0191] Example 3

[0192] This example provides a dimming component, which is similar to the dimming component in Example 1. The difference is that the first adhesive layer 220, the dimming layer 230, and the second adhesive layer 240 are all recessed relative to the first transparent substrate 210 and the second transparent substrate 250 by a distance of 20 mm, and the width of the sealant layer 260 is 20 mm. The sealant layer 260 is a polyurethane sealant.

[0193] Example 4

[0194] This example provides a dimming component, which is similar to the dimming component in Example 1. The difference is that the dimming layer 230 is an LV dimming layer, and the first adhesive layer 220, the dimming layer 230, and the second adhesive layer 240 are all recessed relative to the first transparent substrate 210 and the second transparent substrate 250 by a distance of 10 mm, and the width of the sealant layer 260 is 10 mm. The sealant layer 260 is a POE sealant.

[0195] Comparative Example 1

[0196] Comparative Example 1 provides a dimming component, which is similar to the dimming component in Example 1. The difference is that the sealant layer in Comparative Example 1 is replaced with a PVB adhesive layer.

[0197] Comparative Example 2

[0198] Comparative Example 2 provides a dimming component, which is similar to the dimming component in Example 2. The difference is that the sealant layer in Comparative Example 2 is replaced with a PVB adhesive layer.

[0199] Comparative Example 3

[0200] Comparative Example 3 provides a dimming component, which is similar to the dimming component of Example 3, except that the sealant layer in Comparative Example 3 is replaced with a PVB bonding layer.

[0201] Comparative Example 4

[0202] Comparative Example 4 provides a dimming component, which is similar to the dimming component of Example 4, except that the sealant layer in Comparative Example 4 is replaced with a PVB bonding layer.

[0203] The damp heat test was carried out on the dimming components of the above-mentioned examples and comparative examples, and the test results are shown in Table 1 below.

[0204] Table 1 Damp heat test results of the dimming components of each example and comparative example

[0205]

[0206] In Table 1 above, in Comparative Example 1, the abnormality of 10 mm to 20 mm at the edge of the EC film means that inside the dimming layer, an abnormality occurs in the area 10 mm to 20 mm away from the edge of the dimming layer. Similar meanings exist in other comparative examples and will not be elaborated.

[0207] It can be seen from Table 1 above that by setting the sealant layer, it is beneficial to improve the water vapor erosion resistance effect of the dimming component. It can be understood that when the structure of the dimming component is as Figures 4 - 7 , by setting the sealant layer, it is also beneficial to improve the water vapor erosion resistance effect of the dimming component, which will not be elaborated here.

[0208] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that it is within the scope described in this specification.

[0209] The above-mentioned embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A dimming component, characterized in that, Comprising: A first transparent substrate; A first adhesive layer disposed on the surface of the first transparent substrate; A light-adjusting layer disposed on the surface of the first adhesive layer away from the first transparent substrate; A second adhesive layer disposed on the surface of the light-adjusting layer away from the first transparent substrate; A second transparent substrate disposed on the surface of the second adhesive layer away from the first transparent substrate; Wherein, the first adhesive layer, the light-adjusting layer, and the second adhesive layer are all recessed relative to the first transparent substrate and the second transparent substrate. The light-adjusting component further includes a sealant layer, the sealant layer is disposed in at least a partial recessed area and contacts the first transparent substrate and the second transparent substrate. The side edge of the sealant layer does not exceed the side edges of the first transparent substrate and the second transparent substrate, and the width of the sealant layer is greater than or equal to 1 mm.

2. The dimming component according to claim 1, characterized in that The width of the sealant layer is 1 mm to 20 mm.

3. The dimming component according to claim 2, characterized in that, The width of the sealant layer is 1 mm to 10 mm.

4. The dimming component according to any one of claims 1 to 3, characterized in that, The first adhesive layer, the light-adjusting layer, and the second adhesive layer are flush or the light-adjusting layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is less than or equal to 5 mm. The side edge of the sealant layer contacts the first adhesive layer and the second adhesive layer.

5. The dimming component according to claim 4, characterized in that, The width of the sealant layer is greater than or equal to 3 mm.

6. The dimming component according to claim 5, characterized in that The width of the sealant layer is 3 mm to 10 mm.

7. The dimming component according to any one of claims 1 to 3, characterized in that The light-adjusting layer is recessed relative to the first adhesive layer and the second adhesive layer, and the recessed distance is greater than 5 mm. A third adhesive layer is further disposed between the first adhesive layer and the second adhesive layer, and the third adhesive layer contacts the side edge of the light-adjusting layer. The sealant layer contacts the first adhesive layer, the second adhesive layer, and the third adhesive layer.

8. The dimming component according to claim 7, wherein The third adhesive layer is flush with the first adhesive layer and the second adhesive layer; or, The third adhesive layer is recessed relative to the first adhesive layer and the second adhesive layer. In the direction from the first adhesive layer to the third adhesive layer and in the direction from the second adhesive layer to the third adhesive layer, the width of the sealant layer increases.

9. The dimming component according to claim 8, wherein The maximum width of the sealant layer is 1 mm to 5 mm.

10. The dimming component according to claim 1, 2, 3, 5, 6, 8 or 9, characterized in that, The water vapor transmission rate of the sealant layer ≤ 10 -3 g / m 2 ·d; and / or, The sealant layer includes one of a polyurethane sealant layer, a butyl rubber layer, and a POE sealant layer.

11. The dimming component according to claim 10, characterized in that, The sealant layer includes one of a butyl rubber layer and a POE sealant layer.

12. The dimming component according to claim 1, 2, 3, 5, 6, 8 or 9, characterized in that, On the side surfaces of the sealant layer facing the first transparent substrate and the second transparent substrate, and on the side surface of the sealant layer facing the first adhesive layer, the second adhesive layer, and the light-adjusting layer, a surface activation layer is further provided.

13. A vehicle, characterized in that, Comprising the light-adjusting component according to any one of claims 1 to 12.

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