Dimming device and terminal product

Abstract

The utility model provides a dimming device and a terminal product, and relates to the technical field of dimming. The dimming device comprises a first base material layer, a second base material layer, a third base material layer and a dimming film. The third base material layer is stacked between the first base material layer and the second base material layer in the circumferential direction of the first base material layer and the second base material layer, the first base material layer, the second base material layer and the third base material layer jointly define a cavity, and the dimming film is located in the cavity and connected with at least one of the first base material layer and the second base material layer through the bonding layer. According to the dimming device provided by the invention, the risk of relative displacement between the dimming diaphragm and the base material layer is reduced, so that the finished product quality of the dimming device is improved.

Description

Technical Field

[0001] The present application relates to the field of dimming technology, and in particular to a dimming device and a terminal product. Background Art

[0002] With the development of science and technology, people have an increasing demand for the regulation of light and heat, and dimming technology has also received more attention. Dimming technology refers to the phenomenon that the optical properties of a material change under the influence of an external electric field, external light intensity and other external factors. In appearance, it usually manifests as a reversible change in color and transparency. A dimming film is a film combination containing a dimming material.

[0003] In the prior art, the dimming film and various substrate layers are usually stacked to form a stacked body. The stacked body needs to undergo further processing (such as heating and laminating, pressurizing and laminating, heating and pressurizing, etc.) to connect the dimming film and various substrate layers. Before this, the stacked body will undergo multiple transportations. Since the dimming film and the substrate layer are not connected, the dimming film is likely to be displaced relative to the substrate layer during the transportation process, that is, offset, which may affect the quality of the finished product of the dimming device. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a dimming device and a terminal product, aiming to solve the technical problem that the dimming film is easily displaced relative to the substrate layer.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a dimming device, comprising:

[0007] a first substrate layer;

[0008] a second substrate layer;

[0009] A third substrate layer is stacked between the first substrate layer and the second substrate layer along the circumferential direction of the first substrate layer and the second substrate layer, wherein the first substrate layer, the second substrate layer and the third substrate layer jointly define a cavity;

[0010] The dimming film is located in the chamber and connected to at least one of the first substrate layer and the second substrate layer through an adhesive layer.

[0011] In one embodiment of the first aspect, the dimming device further includes a first light-transmitting layer and a second light-transmitting layer, wherein the first light-transmitting layer is stacked on a side of the first substrate layer facing away from the dimming film, and the second light-transmitting layer is stacked on a side of the second substrate layer facing away from the dimming film.

[0012] In one embodiment of the first aspect, the first light-transmitting layer is a curved structure, and the first light-transmitting layer is convexly arranged to a side away from the dimming film, and the dimming film is connected to the first substrate layer through the adhesive layer.

[0013] In one of the embodiments of the first aspect, the dimming device has a thickness direction and a projection plane perpendicular to the thickness direction, the dimming device also includes a shading layer, the shading layer is stacked on the second light-transmitting layer along the circumference of the second light-transmitting layer, and the orthographic projection area of ​​the adhesive layer on the projection plane is located within the orthographic projection area of ​​the shading layer on the projection plane.

[0014] In one embodiment of the first aspect, the adhesive layer is a strip-shaped adhesive layer.

[0015] In one embodiment of the first aspect, the length of the strip-shaped adhesive layer is L1, and the length of the dimming film in the length direction of the strip-shaped adhesive layer is L2;

[0016] When L1 / L2>0.5, the number of the strip-shaped adhesive layers is at least one; when L1 / L2≤0.5, the number of the strip-shaped adhesive layers is at least two.

[0017] In one embodiment of the first aspect, the adhesive layer includes a first adhesive portion and a second adhesive portion, and the first adhesive portion and the second adhesive portion are arranged at an interval.

[0018] In one embodiment of the first aspect, a spacing distance between the first adhesive portion and the second adhesive portion in a preset direction is S, a length of the dimming film in the preset direction is L2, and the following is satisfied: 0.6≤S / L2≤0.9.

[0019] In one embodiment of the first aspect, the first adhesive portion and the second adhesive portion are located on an edge of the dimming film.

[0020] In one embodiment of the first aspect, the first adhesive portion and the second adhesive portion are located at corners of the dimming film.

[0021] In one embodiment of the first aspect, the first adhesive portion and the second adhesive portion are located on the same side of the dimming film.

[0022] In one embodiment of the first aspect, the first adhesive portion and the second adhesive portion are located on a same straight edge of the dimming film.

[0023] In one embodiment of the first aspect, the dimming device further includes a first light-transmitting layer, which is laminated on the side of the first substrate layer facing away from the dimming film, and the first bonding portion and the second bonding portion are disposed close to the edge of the first light-transmitting layer.

[0024] In one embodiment of the first aspect, the third substrate layer is connected to at least one of the first substrate layer and the second substrate layer.

[0025] In one embodiment of the first aspect, the third substrate layer is connected to the first substrate layer.

[0026] In one embodiment of the first aspect, the third substrate layer is connected to the second substrate layer.

[0027] In one embodiment of the first aspect, the third substrate layer is connected to at least one of the first substrate layer and the second substrate layer through a plurality of connection points.

[0028] In one embodiment of the first aspect, at least some of the connection points are spaced apart along the edge of the dimming film.

[0029] In one embodiment of the first aspect, at least some of the connection points are spaced apart along the edge of the third substrate layer.

[0030] In one embodiment of the first aspect, the distribution density of the connection points located at the narrow edge of the third substrate layer is greater than the distribution density of the connection points located at the wide edge of the third substrate layer.

[0031] In one embodiment of the first aspect, the thickness of the bonding layer is T, satisfying: 0.01 mm ≤ T ≤ 0.3 mm.

[0032] In one embodiment of the first aspect, the bonding layer is a transparent double-sided tape.

[0033] In one embodiment of the first aspect, the minimum surface roughness of the first substrate layer, the second substrate layer, and the third substrate layer is greater than the surface roughness of the dimming film.

[0034] In a second aspect, an embodiment of the present application further provides a terminal product, including the dimming device in any of the above embodiments, and the terminal product includes any one of a transportation vehicle, a curtain wall, an electronic device, and glasses.

[0035] The beneficial effects of the present application are:

[0036] In the dimming device provided by the present application, since the dimming film is connected to at least one of the first substrate layer and the second substrate layer through an adhesive layer, that is, an adhesive layer is provided between at least one of the first substrate layer and the second substrate layer and the dimming film, the dimming film is interconnected with at least one of the two substrate layers through the adhesive layer, which reduces the risk of relative displacement between the dimming film and the substrate layer, thereby improving the finished product quality of the dimming device.

[0037] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and detailed descriptions in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0039] Figure 1 Shows a schematic cross-sectional structure diagram of a dimming device in the prior art;

[0040] Figure 2 Shows a schematic structural diagram of a gap between a dimming film and a third substrate layer in the prior art;

[0041] Figure 3 Shows a schematic structural diagram of mutual extrusion between a dimming film and a third substrate layer in the prior art;

[0042] Figure 4 Shows a schematic cross-sectional structure diagram of a dimming device in some embodiments of the present application;

[0043] Figure 5 Shows a schematic structural diagram of a perspective view of a dimming device in some embodiments of the present application;

[0044] Figure 6 Shows a schematic structural diagram of another perspective view of a dimming device in some embodiments of the present application;

[0045] Figure 7 Shows a schematic structural diagram of a dimming device having a first bonding portion and a second bonding portion in some embodiments of the present application;

[0046] Figure 8 Shows a schematic structural diagram of a dimming device having multiple connection points in some embodiments of the present application.

[0047] MAIN ELEMENT SYMBOL DESCRIPTION:

[0048] Description of main component symbols in the prior art: 200 - dimming device; 210 - first substrate layer; 220 - second substrate layer; 230 - third substrate layer; 240 - dimming film; 241 - gap; 250 - first light-transmitting layer; 260 - second light-transmitting layer; 270 - light-shielding layer;

[0049] Description of main component symbols in this application: 100 - dimming device; 110 - first substrate layer; 120 - second substrate layer; 121 - connection point; 130 - third substrate layer; 131 - chamber; 132 - narrow edge; 133 - wide edge; 140 - adhesive layer; 141 - strip-shaped adhesive layer; 142 - first adhesive part; 143 - second adhesive part; 150 - dimming film; 160 - first light-transmitting layer; 170 - second light-transmitting layer; 180 - light-shielding layer; x - thickness direction; y - preset direction. Detailed implementation manners

[0050] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0053] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0055] As Figure 1 and Figure 2 As shown, in the prior art, when laminating the dimming film 240 and each substrate layer (the first substrate layer 210, the second substrate layer 220, and the third substrate layer 230) to form a laminate, a gap 241 with a certain width is provided between the dimming film 240 and the third substrate layer 230. When the dimming film 240 generates displacement relative to the substrate layer, that is, when there is an offset, the width of the gap 241 between the dimming film 240 and the third substrate layer 230 may change, thereby affecting the finished product quality of the dimming device 200. For example, the following situations may occur:

[0056] As Figure 2 As shown, the gap 241 between one side of the dimming film 240 and the third substrate layer 230 exceeds the preset maximum range, resulting in the fact that the gap 241 cannot be filled by the third substrate layer 230 during the lamination process, and air bubbles will be generated at the gap 241 after lamination.

[0057] As Figure 3As shown, the gap 241 between the other side of the dimming film 240 and the third substrate layer 230 is smaller than the preset minimum range, resulting in extrusion between the dimming film 240 and the third substrate layer 230 during the lamination process. On the one hand, the extrusion of the dimming film 240 may cause some of the internal layer structures to separate from each other, that is, the situation of film peeling of the dimming film 240 occurs. On the other hand, the dimming film 240 may bend or overlap with the third substrate layer 230 to form protrusions, and stress concentration is likely to occur during the lamination process, resulting in cracking of the dimming device 200 at this location.

[0058] As Figure 4 shown, to reduce the occurrence probability of the above technical problems, an embodiment of the present application provides a dimming device 100, including a first substrate layer 110, a second substrate layer 120, a third substrate layer 130, and a dimming film 150.

[0059] Among them, the third substrate layer 130 is laminated between the first substrate layer 110 and the second substrate layer 120 along the circumferential direction of the first substrate layer 110 and the second substrate layer 120, and the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130 jointly define a chamber 131. The dimming film 150 is located in the chamber 131, and the dimming film 150 is connected to at least one of the first substrate layer 110 and the second substrate layer 120 through an adhesive layer 140.

[0060] It should be noted that the statement "the dimming film 150 is connected to at least one of the first substrate layer 110 and the second substrate layer 120 through the adhesive layer 140" means that an adhesive layer 140 is provided between at least one of the first substrate layer 110 and the second substrate layer 120 and the dimming film 150. For example, an adhesive layer 140 may be provided between the first substrate layer 110 and the dimming film 150, or an adhesive layer 140 may be provided between the second substrate layer 120 and the dimming film 150. Of course, adhesive layers 140 may also be provided between the first substrate layer 110 and the dimming film 150 and between the second substrate layer 120 and the dimming film 150 respectively.

[0061] Exemplarily, the materials of the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130 may include materials with a connecting function that are conventional in the art, and the materials can achieve a connecting function after further processing (such as heat lamination, pressure lamination, heat and pressure lamination, etc.). For example, Polyvinyl Butyral (PVB), Ethylene-vinyl Acetate Copolymer (EVA), OCA (Optically Clear Adhesive) optical adhesive, SCA optical adhesive, ionic interlayer film (such as Sentry Glas Plus, SGP), etc. can be selected. There is no specific limitation on the materials of each substrate layer here. It should be noted that the materials of the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130 can be the same or different. Preferably, they are the same material. In this case, the compatibility of the three is better. For example, when all three are PVB, they can be better melted together after heating, will not repel each other, and can form better protection for the dimming film 150. Exemplarily, the material of the adhesive layer 140 can be a material with a direct connecting function that is conventional in the art. It should be noted that the "material with a direct connecting function" here refers to a material that can achieve a connecting function without further processing (such as heat lamination, pressure lamination, heat and pressure lamination, etc.), such as double-sided tape, cured adhesive, etc., which will not be elaborated here one by one.

[0062] In addition, the above dimming film 150 can be an electrochromic dimming film, a liquid crystal dimming film, a photochromic dimming film, etc. When the dimming film 150 is an electrochromic dimming film, the dimming material can specifically be the following categories: (1) Inorganic electrochromic materials, such as oxides of the following metals: tungsten, nickel, iridium, niobium, tin, bismuth, vanadium, nickel, antimony, and tantalum, alone or in the form of a mixture of two or more of them; if necessary, in the form of a mixture with at least one other metal such as titanium, tantalum, or rhenium; (2) Organic electrochromic materials, such as electron-conducting polymers, such as derivatives of polythiophene, polypyrrole, or polyaniline; (3) Complexes, such as Prussian blue; (4) Metallopolymers; (5) Combinations of at least two electrochromic materials selected from at least two of (1)-(4). When the dimming film 150 is a liquid crystal dimming film, the dimming material can specifically be polymer dispersed liquid crystal (PDLC), nano light valve (LV), Suspended-Particle Devices (SPD), liquid crystal (LC), etc.

[0063] Preferably, when the dimming film 150 is an electrically driven dimming film, the dimming film 150 includes a dimming medium layer and a conductive substrate. The conductive substrate can be one or more layers. When it is a two-layer conductive substrate structure, the first conductive substrate and the second conductive substrate are respectively disposed on both sides of the dimming medium layer. Optionally, the dimming medium layer is one or a combination of two or more of a liquid dimming medium, a solid dimming medium, or a sol-state dimming medium. Preferably, the dimming medium layer is a solid dimming medium. More preferably, the dimming medium layer is a solid electrochromic stack layer, and the electrochromic stack layer includes an ion storage layer, an electrolyte layer, and an electrochromic material layer that are sequentially stacked.

[0064] It should be understood that the above material selections for the dimming film 150 are all exemplary, and no specific restrictions are imposed on the dimming material here.

[0065] It can be understood that in the dimming device 100 provided in this embodiment, since the dimming film 150 is connected to at least one of the first substrate layer 110 and the second substrate layer 120 through the adhesive layer 140, that is, an adhesive layer 140 is provided between at least one of the first substrate layer 110 and the second substrate layer 120 and the dimming film 150, the dimming film 150 forms an interconnection with at least one of the two substrate layers through the adhesive layer 140, which reduces the risk of relative displacement between the dimming film 150 and the substrate layer, thereby improving the finished product quality of the dimming device 100.

[0066] It should be noted that the "reduction of the risk of relative displacement between the dimming film 150 and the substrate layer" here refers to the reduction of the risk of relative displacement between the dimming film 150 and at least one substrate layer. For example, when the substrate layer includes the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130, it may refer to only reducing the risk of relative displacement between the dimming film 150 and a certain substrate layer, where the "certain substrate layer" is any one of the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130; it may also refer to reducing the risk of relative displacement between the dimming film 150 and a certain two substrate layers, where the "certain two substrate layers" are any two of the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130; it may also refer to reducing the risk of relative displacement between the dimming film 150 and all substrate layers, where the "all substrate layers" are the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130.

[0067] In one embodiment, the minimum surface roughness of the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130 is greater than the surface roughness of the dimming film 150.

[0068] In this embodiment, since the minimum surface roughness among the first substrate layer 110, the second substrate layer 120, and the third substrate layer 130 is greater than the surface roughness of the dimming film 150, the frictional force between the substrate layers is greater than the frictional force between the substrate layer and the dimming film 150. Therefore, relative displacement is more likely to occur between the dimming film 150 and the first substrate layer 110 than between the third substrate layer 130 and the first substrate layer 110; similarly, relative displacement is more likely to occur between the dimming film 150 and the second substrate layer 120 than between the third substrate layer 130 and the second substrate layer 120. Therefore, by connecting the dimming film 150 to at least one of the above two substrate layers (i.e., at least one of the first substrate layer 110 and the second substrate layer 120) through the adhesive layer 140, the risk of relative displacement between the dimming film 150 and the third substrate layer 130 can be reduced.

[0069] As Figure 4 shown, in one embodiment, the dimming device 100 further includes a first light-transmitting layer 160 and a second light-transmitting layer 170. The first light-transmitting layer 160 is laminated on the side of the first substrate layer 110 facing away from the dimming film 150, and the second light-transmitting layer 170 is laminated on the side of the second substrate layer 120 facing away from the dimming film 150.

[0070] Exemplarily, the materials of the first light-transmitting layer 160 and the second light-transmitting layer 170 can be selected as glass, transparent resin, etc., and no specific restrictions are imposed on the materials of each light-transmitting layer. In one embodiment, the minimum surface roughness of the first light-transmitting layer 160 and the second light-transmitting layer 170 is greater than the surface roughness of the dimming film 150.

[0071] As Figure 1 shown, the lamination process of the dimming film 240 is as follows: 1. Stack the first light-transmitting layer 250, the first substrate layer 210, the dimming film 240, the third substrate layer 230, the second substrate layer 220, the light-shielding layer 270, and the second light-transmitting layer 260 in sequence to form a laminate. 2. Evacuate the laminate and perform high-temperature and high-pressure molding to form the finished dimming device 200. During this process, the inventors further discovered the following possible problems:

[0072] 1. When stacking the second light-transmitting layer 260, due to the large error in manual alignment, especially the alignment of the curved glass, the position of the second light-transmitting layer 260 needs to be adjusted again after the second light-transmitting layer 260 is stacked. Since a certain connection force will be generated between the second light-transmitting layer 260 and the second substrate layer 220 after placement, the second light-transmitting layer 260 and the second substrate layer 220 are generally adjusted together as a whole. At this time, if the adhesive layer 140 is set between the dimming film 240 and the second substrate layer 220, the second light-transmitting layer 260 and the second substrate layer 220 need to be peeled off from each other before the position adjustment is performed, which increases the inconvenience of the process.

[0073] 2. Since foreign matter is easily present on the surface of the second substrate layer 220, and the foreign matter is usually more easily found when the second substrate layer 220 and other layer structures (such as the second light-transmitting layer 220 or the dimming film 240) are stacked together, it is necessary to rework and clean the foreign matter on the second substrate layer 220. The general practice is to directly lift up the second substrate layer 220 to remove the foreign matter. At this time, if the adhesive layer 140 is disposed between the second substrate layer 220 and the dimming film 240, the process inconvenience is increased when the second substrate layer 220 is lifted up.

[0074] 3. Since the second substrate layer 220 is generally flexible and prone to certain deformation, it needs to be flattened during use to restore it to a relatively flat state. Therefore, if the adhesive layer 140 is set between the dimming film 150 and the second substrate layer 220, it is easy for the dimming film 150 and the second substrate layer 220 to adhere first, while the second substrate layer 220 has not been completely flattened, resulting in uneven thickness of the second substrate layer 220 after assembly, thereby increasing the risk of cracking of the dimming device 200 at thicker locations.

[0075] 4. After the dimming film 240 is displaced, the edge of the dimming film 240 may be exposed in the visible area of ​​the dimming device 200 and cannot be completely blocked by the shading layer 270, thereby affecting the appearance of the product.

[0076] like Figure 4 As shown, in order to solve at least one of the above technical problems, in one embodiment, the dimming film 150 is connected to the first substrate layer 110 through the adhesive layer 140 .

[0077] Furthermore, the first light-transmitting layer 160 is a curved structure, and the first light-transmitting layer 160 is protruded toward the side away from the dimming film 150 , and the dimming film 150 is connected to the first substrate layer 110 through the adhesive layer 140 , that is, the adhesive layer 140 is arranged between the first substrate layer 110 and the dimming film 150 .

[0078] Exemplarily, the curved surface structure is, for example, curved glass, curved transparent resin, etc.

[0079] It can be understood that in this embodiment, the adhesive layer 140 is disposed between the first substrate layer 110 and the light-dimming film 150, which can solve the following technical problems:

[0080] 1. When there is an alignment error in stacking the second light-transmitting layer 170, the second light-transmitting layer 170 and the second substrate layer 120 can still be adjusted together as a whole without being affected by the adhesive layer 140, which is more convenient in terms of process. At the same time, when the second light-transmitting layer 170 and the second substrate layer 120 are adjusted together as a whole, a force parallel to the light-dimming film 150 may be generated. However, since the adhesive layer 140 connects the light-dimming film 150 to the first substrate layer 110, this force will not affect the light-dimming film 150, reducing the possibility of displacement of the light-dimming film 150.

[0081] 2. When there are foreign matters on the surface of the second substrate layer 120, the second substrate layer 120 can still be directly lifted to remove the foreign matters without being affected by the adhesive layer 140, which is more convenient in terms of process. At the same time, when the second substrate layer 120 is lifted, a force parallel to the light-dimming film 150 may also be generated. However, since the adhesive layer 140 connects the light-dimming film 150 to the first substrate layer 110, this force will not affect the light-dimming film 150 either.

[0082] 3. When stacking the second substrate layer 120, the situation where the second substrate layer 120 adheres to the adhesive layer 140 before being flattened will not occur.

[0083] It should be noted that for the above embodiment, it is also possible that the light-dimming film 150 is connected to the second substrate layer 120 through the adhesive layer 140, that is, the adhesive layer 140 is disposed between the second substrate layer 120 and the light-dimming film 150, so that a connection is formed between the light-dimming film 150 and the second substrate layer 120, which can also improve the problem of displacement of the light-dimming film 150. In addition, the first light-transmitting layer 160 can also be a planar structure, such as planar glass, planar transparent resin, etc.

[0084] As Figure 4 shown, further, the light-dimming device 100 has a thickness direction x and a projection plane perpendicular to the thickness direction x. The light-dimming device 100 further includes a light-shielding layer 180. The light-shielding layer 180 is laminated on the second light-transmitting layer 170 along the circumferential direction of the second light-transmitting layer 170. The orthographic projection area of the adhesive layer 140 on the projection plane is located within the orthographic projection area of the light-shielding layer 180 on the projection plane.

[0085] Exemplarily, the material of the light shielding layer 180 may be black ink, SOMA light shielding material, etc., and no specific limitation is made here.

[0086] It should be noted that, here, the light-shielding layer 180 is stacked on the second light-transmitting layer 170 along the circumferential direction of the second light-transmitting layer 170 means that the light-shielding layer 180 can be stacked between the second light-transmitting layer 170 and the second substrate layer 120 along the circumferential direction of the second light-transmitting layer 170, or can be stacked on the side of the second light-transmitting layer 170 away from the dimming film 150 along the circumferential direction of the second light-transmitting layer 170, and no specific restriction is made on the setting position of the light-shielding layer 180.

[0087] In the present embodiment, since the light-shielding layer 180 is stacked on the second light-transmitting layer 170 along the circumferential direction of the second light-transmitting layer 170, and the orthographic projection area of ​​the adhesive layer 140 on the projection plane is located within the orthographic projection area of ​​the light-shielding layer 180 on the projection plane, that is, the adhesive layer 140 is arranged within the shielding range of the light-shielding layer 180, the adhesive layer 140 will not be exposed in the visible area of ​​the dimming device 100, thereby reducing the influence of setting the adhesive layer 140 on the dimming function of the dimming device 100.

[0088] Of course, for the above embodiment, a transparent double-sided tape can also be selected as the adhesive layer 140. The transparent double-sided tape has both bonding effect and light transmission effect. It can not only realize the connection between the dimming film 150 and the substrate layer, but also can improve the influence on the dimming function without the need for the shading layer 180 to block it.

[0089] It should be noted that a transparent double-sided tape can be selected as the adhesive layer 140 , and the adhesive layer 140 is arranged within the shielding range of the shading layer 180 , which can more effectively reduce the influence of the adhesive layer 140 on the dimming function of the dimming device 100 .

[0090] like Figure 5 As shown, in one embodiment, the adhesive layer 140 is a strip-shaped adhesive layer 141 .

[0091] In this embodiment, due to the flatness of the strip adhesive layer 141 and the lower process difficulty during pasting, the strip adhesive layer 141 is used as the adhesive layer 140 to achieve the connection between the dimming film 150 and the substrate layer. This can not only improve the quality of the finished product of the dimming device 100, but also reduce the difficulty of the dimming film 150 assembly process, save the time of the assembly process, and thus reduce the manufacturing cost of the dimming device 100.

[0092] like Figure 5As shown in the figure, further, the length of the strip-shaped adhesive layer 141 is L1, and in the length direction of the strip-shaped adhesive layer 141, the length of the light-adjusting film 150 is L2. When L1 / L2 > 0.5, the number of strip-shaped adhesive layers 141 is at least one; when L1 / L2 ≤ 0.5, the number of strip-shaped adhesive layers 141 is at least two.

[0093] In this embodiment, when the ratio of the length of the strip-shaped adhesive layer 141 to the length of the light-adjusting film 150 is greater than 0.5, even if there is only one strip-shaped adhesive layer 141, the light-adjusting film 150 can be stably connected to the substrate layer. When the ratio of the length of the strip-shaped adhesive layer 141 to the length of the light-adjusting film 150 is less than or equal to 0.5, one strip-shaped adhesive layer 141 is not sufficient to stably connect the substrate layer and the light-adjusting film 150. At this time, at least two strip-shaped adhesive layers 141 are required to stably connect the light-adjusting film 150 to the substrate layer.

[0094] As Figure 6 shown, in one embodiment, the adhesive layer 140 includes a first adhesive portion 142 and a second adhesive portion 143, and the first adhesive portion 142 and the second adhesive portion 143 are arranged at intervals.

[0095] Exemplarily, the first substrate layer 110 is respectively connected to the light-adjusting film 150 through the first adhesive portion 142 and the second adhesive portion 143, that is, the light-adjusting film 150 is connected to the first substrate layer 110 through the first adhesive portion 142 and the second adhesive portion 143; or the second substrate layer 120 is respectively connected to the light-adjusting film 150 through the first adhesive portion 142 and the second adhesive portion 143, that is, the light-adjusting film 150 is connected to the second substrate layer 120 through the first adhesive portion 142 and the second adhesive portion 143; or the first substrate layer 110 is respectively connected to the light-adjusting film 150 through the first adhesive portion 142 and the second adhesive portion 143, and the second substrate layer 120 is respectively connected to the light-adjusting film 150 through the first adhesive portion 142 and the second adhesive portion 143, that is, the light-adjusting film 150 is respectively connected to the first substrate layer 110 and the second substrate layer 120.

[0096] In this embodiment, since the light-adjusting film 150 is respectively connected through the first adhesive portion 142 and the second adhesive portion 143, and the first adhesive portion 142 and the second adhesive portion 143 are arranged at intervals, two-point connection of the light-adjusting film 150 is realized. Compared with the multi-point connection method of three points or more, two-point connection is more convenient and fast, so that the process flow can be reduced and the production efficiency can be improved; compared with the single-point connection method, two-point connection has higher reliability and can more effectively limit the displacement of the light-adjusting film 150.

[0097] As Figure 7As shown, in a specific embodiment, the spacing distance S between the first bonding portion 142 and the second bonding portion 143 in the preset direction y satisfies 0.6 ≤ S / L2 ≤ 0.9, where L2 is the length of the dimming film 150 in the preset direction y.

[0098] Exemplarily, S / L2 can be selected as any value among 0.6, 0.62, 0.65, 0.7, 0.71, 0.75, 0.8, 0.85, 0.9 or any value within the range composed of any two of them.

[0099] In this embodiment, since 0.6 ≤ S / L2 ≤ 0.9, that is, the spacing distance S between the first bonding portion 142 and the second bonding portion 143 in the preset direction y is 60% - 90% of the length L2 of the dimming film 150 in the preset direction y, this can enhance the effect of two-point connection of the dimming film 150.

[0100] As Figure 6 and Figure 7 shown, further, the first bonding portion 142 and the second bonding portion 143 are located on the edge of the dimming film 150, that is, the first bonding portion 142 and the second bonding portion 143 are arranged close to the edge of the dimming film 150.

[0101] It should be noted that the edge of the dimming film 150 includes multiple edges connected in sequence and the corners formed between adjacent two edges. The multiple edges can include straight edges and curved edges.

[0102] It can be understood that since the sizes of end products such as automotive sunroofs and building glass are usually large, the corresponding size of the dimming film 150 is also large. In this embodiment, since the first bonding portion 142 and the second bonding portion 143 are located on the edge of the dimming film 150, that is, arranged close to the edge of the dimming film 150. This facilitates the arrangement of the first bonding portion 142 and the second bonding portion 143, and the operation is more convenient, thus improving the production efficiency.

[0103] Exemplarily, the first bonding portion 142 and the second bonding portion 143 are located at the corner of the dimming film 150, that is, the first bonding portion 142 and the second bonding portion 143 are arranged close to the corner of the dimming film 150. This can shorten the time consumed in arranging the first bonding portion 142 and the second bonding portion 143, thus further improving the production efficiency.

[0104] Of course, the first bonding portion 142 and the second bonding portion 143 can also be located on the same side of the dimming film 150, that is, the first bonding portion 142 and the second bonding portion 143 are arranged close to the same side of the dimming film 150. This can also shorten the time consumed in arranging the first bonding portion 142 and the second bonding portion 143.

[0105] Further, the first bonding portion 142 and the second bonding portion 143 are located on the same straight edge of the light-dimming film 150, that is, the first bonding portion 142 and the second bonding portion 143 are arranged close to the same straight edge of the light-dimming film 150. In this way, the same straight edge of the light-dimming film 150 can be used as a positioning reference when arranging the first bonding portion 142 and the second bonding portion 143, which can further improve production efficiency. Of course, the first bonding portion 142 and the second bonding portion 143 can also be arranged close to the same curved edge of the light-dimming film 150.

[0106] As Figure 6 shown, in another specific embodiment, the first bonding portion 142 and the second bonding portion 143 are arranged close to the edge of the first light-transmitting layer 160.

[0107] It can be understood that since the sizes of end products such as automotive sunroofs and building glass are usually large, the size of the corresponding first light-transmitting layer 160 is also large. In this embodiment, since the first bonding portion 142 and the second bonding portion 143 are arranged close to the edge of the first light-transmitting layer 160, it is convenient to arrange the first bonding portion 142 and the second bonding portion 143, and the operation is more convenient, thereby improving production efficiency.

[0108] As Figure 4 shown, in one embodiment, the third base material layer 130 is connected to at least one of the first base material layer 110 and the second base material layer 120.

[0109] Exemplarily, a hot melt gun can be held for connection or automatic connection can be performed through a hot melt device.

[0110] It can be understood that although there is a certain connection force between the base material layers, when the external force is large, there is still a risk that the third base material layer 130 around the light-dimming film 150 will displace relative to the first base material layer 110 and the second base material layer 120. At this time, although the light-dimming film 150 has been connected to at least one of the first base material layer 110 and the second base material layer 120 through the bonding layer 140, the gap between the third base material layer 130 and the light-dimming film 150 will still change. In this embodiment, by connecting the third base material layer 130 to at least one of the first base material layer 110 and the second base material layer 120, the possibility of the third base material layer 130 displacing relative to other base material layers can be restricted, which can further reduce the risk of bubbles and cracks caused by the change of the gap between the third base material layer 130 and the light-dimming film 150.

[0111] In a specific embodiment, the third substrate layer 130 is connected to the first substrate layer 110. In this way, the third substrate layer 130, the dimming film 150, and the first substrate layer 110 form an integral whole, effectively restricting the change of the gap, thereby preventing and improving the situation of excessive bubbles caused by too large a gap between the dimming film 150 and the third substrate layer 130 and the occurrence of cracking caused by too small a gap.

[0112] Furthermore, the third substrate layer 130 is also connected to the second substrate layer 120. In this way, the third substrate layer 130, the dimming film 150, the first substrate layer 110, and the second substrate layer 120 form an integral whole, more effectively restricting the change of the gap.

[0113] As Figure 8 shown, in a specific embodiment, the third substrate layer 130 is connected to at least one of the first substrate layer 110 and the second substrate layer 120 through a plurality of connection points 121, and at least some of the connection points 121 are distributed at intervals along the edge of the dimming film 150, and at least some of the connection points 121 are distributed at intervals along the edge of the third substrate layer 130.

[0114] In this embodiment, since the third substrate layer 130 is connected to at least one of the first substrate layer 110 and the second substrate layer 120, and the connection points 121 are distributed at intervals along the edge of the dimming film 150 and the edge of the third substrate layer 130, that is, connected through a plurality of spaced connection points 121, this can not only restrict the displacement of the third substrate layer 130, but also reduce the process flow and improve the production efficiency.

[0115] As Figure 8 shown, furthermore, the distribution density of the connection points 121 at the narrow edge 132 of the third substrate layer 130 is greater than the distribution density of the connection points 121 at the wide edge 133 of the third substrate layer 130.

[0116] It can be understood that the wide edge 133 refers to the edge with a relatively larger size on the third substrate layer 130, and the narrow edge 132 refers to the edge with a relatively smaller size on the third substrate layer 130, that is, the size of the wide edge 133 is greater than the size of the narrow edge 132.

[0117] It should be noted that, since the size of the narrow edge 132 of the third substrate layer 130 is smaller than the size of the wide edge 133, the position of the narrow edge 132 is more susceptible to external forces (for example, when trimming the dimming device 100 or when transporting the stacked body), resulting in displacement of the third substrate layer 130. In this embodiment, since the distribution density of the connection points 121 at the narrow edge 132 of the third substrate layer 130 is higher and the distribution density of the connection points 121 at the wide edge 133 of the third substrate layer 130 is lower, the distribution of the connection points 121 is more reasonable, which can more effectively limit the displacement of the third substrate layer 130.

[0118] like Figure 4 As shown, in one embodiment, the thickness of the adhesive layer 140 is T, satisfying: 0.01 mm≤T≤0.3 mm.

[0119] Exemplarily, T can be selected from any value of 0.01mm, 0.02mm, 0.03mm, 0.05mm, 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.2mm, 0.26mm, 0.3mm or any value in a range consisting of any two of them, and no specific limitation is made herein.

[0120] It is understandable that since the dimming device 100 is sensitive to thickness, cracks are likely to occur if the local area is too thick, so the adhesive layer 140 should be as thin as possible. In this embodiment, by controlling the thickness of the adhesive layer 140 within the range of 0.01 mm to 0.3 mm, the effect of the adhesive layer 140 on the thickness of the dimming device 100 can be improved, and the cracks caused by excessive local thickness can be reduced.

[0121] In one embodiment, the viscosity of the adhesive layer 140 facing the dimming film 150 is greater than or equal to the viscosity of the adhesive layer 140 facing away from the dimming film 150 .

[0122] It is understandable that the surface of the dimming film 150 is relatively smooth and does not require high viscosity, while the surface structures of the first substrate layer 110 and the second substrate layer 120 are relatively rough and have certain requirements for viscosity. In this embodiment, since the viscosity of the side of the adhesive layer 140 facing the dimming film 150 is greater than or equal to the viscosity of the side of the adhesive layer 140 facing away from the dimming film 150, such a viscosity distribution is more reasonable and can better fix the dimming film 150.

[0123] In one embodiment, the melting point of the adhesive layer 140 is lower than the melting points of the first substrate layer 110 and the second substrate layer 120 .

[0124] In this embodiment, since the melting point of the adhesive layer 140 is lower than that of the first base material layer 110 and the second base material layer 120, the compatibility between the adhesive layer 140 and the first base material layer 110 and the second base material layer 120 can be improved, and the risk of forming cavities due to the mutual repulsion between the materials of the adhesive layer 140 and the base material layer during baking and hot pressing forming can be reduced.

[0125] In a second aspect, an embodiment of the present application provides a terminal product, including the dimming device 100 in any one of the embodiments of the first aspect above. The terminal product includes any one of a transportation vehicle, a curtain wall, an electronic device, and glasses. Specifically, the dimming device 100 can be applied to the rearview mirror of a transportation vehicle, various windows of a transportation vehicle (such as the front windshield, sunroof glass, rear windshield, front side window glass, rear side window glass of a car, and the porthole of an airplane, etc.); the housing, display panel, etc. of an electronic device. In addition, the transportation vehicle includes a car, a train, an airplane, a ship, etc.; the electronic device includes a mobile phone, a computer, a tablet, a smart wearable device, etc.; the glasses include ordinary glasses, AR (Augmented Reality) glasses, VR (Virtual Reality) glasses, sunglasses, ski goggles, etc.

[0126] It can be understood that since the terminal product provided in this embodiment has the dimming device 100 in any one of the embodiments of the first aspect above, it has all the beneficial effects of the dimming device 100, and will not be listed one by one here.

[0127] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0128] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A dimming device, characterized in that: include: a first substrate layer; a second substrate layer; A third substrate layer is stacked between the first substrate layer and the second substrate layer along the circumferential direction of the first substrate layer and the second substrate layer, wherein the first substrate layer, the second substrate layer and the third substrate layer jointly define a cavity; The dimming film is located in the chamber and connected to at least one of the first substrate layer and the second substrate layer through an adhesive layer.

2. The dimming device according to claim 1, characterized in that: The dimming device further includes a first light-transmitting layer and a second light-transmitting layer. The first light-transmitting layer is stacked on a side of the first substrate layer away from the dimming film, and the second light-transmitting layer is stacked on a side of the second substrate layer away from the dimming film.

3. The dimming device according to claim 2, characterized in that: The first light-transmitting layer is a curved structure, and the first light-transmitting layer is convexly arranged toward a side away from the dimming film, and the dimming film is connected to the first substrate layer through the adhesive layer.

4. The dimming device according to claim 2, characterized in that: The dimming device has a thickness direction and a projection plane perpendicular to the thickness direction. The dimming device also includes a shading layer, which is stacked on the second light-transmitting layer along the circumference of the second light-transmitting layer. The orthographic projection area of ​​the adhesive layer on the projection plane is located within the orthographic projection area of ​​the shading layer on the projection plane.

5. The dimming device according to claim 1, characterized in that: The adhesive layer is a strip-shaped adhesive layer.

6. The dimming device according to claim 5, characterized in that: The length of the strip-shaped adhesive layer is L1, and the length of the dimming film in the length direction of the strip-shaped adhesive layer is L2; When L1 / L2>0.5, the number of the strip-shaped adhesive layers is at least one; when L1 / L2≤0.5, the number of the strip-shaped adhesive layers is at least two.

7. The dimming device according to claim 1, characterized in that: The adhesive layer includes a first adhesive portion and a second adhesive portion, and the first adhesive portion and the second adhesive portion are arranged at an interval.

8. The dimming device according to claim 7, characterized in that: The spacing distance between the first adhesive portion and the second adhesive portion in a preset direction is S, and the length of the dimming film in the preset direction is L2, which satisfies: 0.6≤S / L2≤0.

9.

9. The dimming device according to claim 8, characterized in that: The first adhesive portion and the second adhesive portion are located on the edge of the dimming film.

10. The dimming device according to claim 9, characterized in that: The first adhesive portion and the second adhesive portion are located at corners of the dimming film.

11. The dimming device according to claim 9, characterized in that: The first adhesive portion and the second adhesive portion are located on the same side of the dimming film.

12. The dimming device according to claim 11, characterized in that: The first adhesive portion and the second adhesive portion are located on a same straight edge of the dimming film.

13. The dimming device according to claim 7, characterized in that: The dimming device further includes a first light-transmitting layer, which is stacked on a side of the first substrate layer away from the dimming film, and the first adhesive portion and the second adhesive portion are arranged close to an edge of the first light-transmitting layer.

14. The dimming device according to any one of claims 1 to 13, characterized in that: The third substrate layer is connected to at least one of the first substrate layer and the second substrate layer.

15. The dimming device according to claim 14, characterized in that: The third substrate layer is connected to the first substrate layer.

16. The dimming device according to claim 15, characterized in that: The third substrate layer is connected to the second substrate layer.

17. The dimming device according to claim 14, characterized in that: The third substrate layer is connected to at least one of the first substrate layer and the second substrate layer through a plurality of connection points.

18. The dimming device according to claim 17, characterized in that: At least some of the connection points are distributed at intervals along the edge of the dimming film.

19. The dimming device according to claim 17, characterized in that: At least some of the connection points are spaced apart along an edge of the third substrate layer.

20. The dimming device according to claim 19, characterized in that: The distribution density of the connection points located at the narrow edge of the third substrate layer is greater than the distribution density of the connection points located at the wide edge of the third substrate layer.

21. The dimming device according to any one of claims 1 to 13, characterized in that: The thickness of the adhesive layer is T, which satisfies: 0.01 mm ≤ T ≤ 0.3 mm.

22. The dimming device according to any one of claims 1 to 13, characterized in that: The adhesive layer is a transparent double-sided adhesive.

23. The dimming device according to any one of claims 1 to 13, characterized in that: The minimum surface roughness of the first substrate layer, the second substrate layer and the third substrate layer is greater than the surface roughness of the dimming film.

24. A terminal product, characterized in that: The dimming device comprises any one of claims 1 to 23, wherein the terminal product comprises any one of a vehicle, a curtain wall, an electronic device and glasses.

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