Light adjusting device and light adjusting apparatus

Abstract

The application provides a dimming device and a dimming apparatus. The dimming device comprises a dimming film and at least two lead-out parts; the dimming film comprises an edge area formed by sequentially connecting a plurality of edge segments in a head-to-tail mode, and at least one of the plurality of edge segments is provided with a plurality of electrodes; the at least two lead-out parts are arranged on the edge segment provided with the plurality of electrodes, and one lead-out part is connected with one electrode. The dimming device provided by the application can form an electrical connection between the electrodes and an external power supply through the lead-out parts, so that the current can be conducted to other areas of the dimming device through the plurality of electrodes, respectively, so that the dimming layer in the dimming film can start to change color from a plurality of places of the edge segment, so as to improve the conduction speed of the current on the conductive layer, thereby improving the color change speed of the dimming layer and the color change speed of the dimming film.

Description

Technical Field

[0001] This application relates to the field of dimming technology, and in particular to a dimming device and dimming apparatus. Background Technology

[0002] With the development of technology, people's demand for light and heat regulation is increasing, and dimming technology is attracting more attention. Specifically, dimming technology refers to the phenomenon that the optical properties of materials change under the influence of an external electric field, external light intensity, and other external factors. In terms of appearance, this usually manifests as reversible changes in color and transparency.

[0003] The dimming film includes a conductive layer, and color changing can be achieved by applying voltage to the conductive layer. However, if the conductive layer of the dimming film is directly connected to an external power source, the current conduction speed in the conductive layer will be slow, resulting in a slow color changing speed of the dimming film. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a dimming device and dimming apparatus.

[0005] This application provides the following technical solution: a dimming device, comprising:

[0006] A dimming film includes an edge region formed by sequentially connecting multiple edge segments end to end, wherein at least one of the multiple edge segments is provided with multiple electrodes;

[0007] At least two leads are disposed on the edge segment having a plurality of said electrodes, and one lead is connected to one of said electrodes.

[0008] In some embodiments, the plurality of electrodes includes at least one first electrode and at least one second electrode, wherein the first electrode and the second electrode have opposite polarities;

[0009] The at least two leads include a first lead and a second lead, wherein the first lead is connected to the first electrode and the second lead is connected to the second electrode;

[0010] Along the arrangement direction of the first electrode and the second electrode, there is at least one first electrode and at least one second electrode between the first lead-out portion or the second lead-out portion and either end of the edge segment.

[0011] In some embodiments, the plurality of edge segments include at least two first edge segments, each first edge segment having a first end and a second end, the width between the two first edge segments gradually decreasing from the first end to the second end, and the first lead-out portion and the second lead-out portion being disposed on one of the first edge segments.

[0012] In some embodiments, a second lead is provided between the first lead and the first end, and a first electrode and a second electrode are provided between the second lead and the first end; or, a first lead is provided between the second lead and the first end, and a first electrode and a second electrode are provided between the first lead and the first end.

[0013] The first electrode connected to the first lead-out portion and the second electrode connected to the second lead-out portion are arranged adjacent to each other.

[0014] In some embodiments, the distance between the first lead-out portion and the first end portion is less than the distance between the first lead-out portion and the second end portion, and the distance between the second lead-out portion and the first end portion is less than the distance between the second lead-out portion and the second end portion.

[0015] The first electrode connected to the first lead-out portion and the second electrode connected to the second lead-out portion are arranged adjacent to each other.

[0016] In some embodiments, among adjacent first electrodes and second electrodes, the length of the first electrode closer to the first end is less than the length of the second electrode farther from the first end, and the length of the second electrode closer to the first end is less than the length of the first electrode farther from the first end.

[0017] In some embodiments, the first edge segment is provided with a plurality of first electrodes and a plurality of second electrodes, the length of the plurality of first electrodes gradually increases from the first end to the second end, and the length of the plurality of second electrodes gradually increases from the first end to the second end.

[0018] In some embodiments, the dimming film includes a first base layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second base layer that are sequentially stacked.

[0019] The edge region is provided with multiple first grooves and multiple second grooves;

[0020] The first groove penetrates the first substrate layer, the first conductive layer, and the electrochromic layer, and exposes a portion of the second conductive layer to form the first electrode;

[0021] The second groove penetrates the second base layer, the second conductive layer and the electrochromic layer, and exposes a portion of the first conductive layer to form the second electrode.

[0022] In some embodiments, the dimming device includes a first busbar and a second busbar, the first busbar being disposed on one side of the edge region along the thickness direction, the second busbar being disposed on the other side of the edge region along the thickness direction, the first busbar being connected to the first electrode, and the second busbar being connected to the second electrode.

[0023] Secondly, this application provides a dimming device, comprising a first substrate layer, a first adhesive layer, the dimming device, a second adhesive layer, and a second substrate layer stacked sequentially, wherein a sealing portion is provided on the periphery of the dimming film, and the sealing portion is disposed between the first substrate layer and the second substrate layer.

[0024] The embodiments of this application have the following advantages: by providing multiple electrodes on at least one of the multiple edge segments, and by connecting the electrodes to an external power source through the lead-out portion, current can be conducted to other areas of the dimming device through the multiple electrodes respectively, so that the dimming layer in the dimming film can change color from multiple locations on the edge segments, thereby improving the current conduction efficiency on the conductive layer; in addition, by increasing the number of edge segments with multiple electrodes, the number of electrodes can be further increased, thereby enabling the dimming layer in the dimming film to change color from multiple locations on the multiple edge segments, further improving the current conduction efficiency on the conductive layer, thereby increasing the color-changing speed of the dimming layer and the color-changing speed of the dimming film.

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This illustration shows a schematic diagram of a first embodiment of a dimming device provided by some embodiments of this application from one perspective;

[0028] Figure 2 This application provides a schematic diagram of the structure of a dimming device from another perspective, illustrating some embodiments thereof.

[0029] Figure 3 The diagram shows a structural schematic of a dimming device provided by some embodiments of this application from one perspective.

[0030] Explanation of key component symbols:

[0031] 100-Dimming film; 110-Edge area; 111-Edge segment; 120-Electrode; 121-First electrode; 122-Second electrode; 1111-First edge segment; 1112-First end; 1113-Second end; 130-First substrate layer; 140-First conductive layer; 150-Dimming layer; 160-Second conductive layer; 170-Second substrate layer; 180-First groove; 190-Second groove; 200-Lead-out portion; 210-First lead-out portion; 220-Second lead-out portion; 300-First substrate layer; 400-First adhesive layer; 500-Second adhesive layer; 600-Second substrate layer; 700-Sealing portion; 800-First busbar; 900-Second busbar.

[0032] Z - Thickness direction. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] like Figure 1 As shown, some embodiments of this application provide a dimming device, which mainly improves the overall color-changing speed of the dimming device by setting multiple electrodes 120 on the edge segment 111 and connecting the electrodes 120 to an external power source through the lead-out portion 200.

[0039] The dimming film 100 includes an edge region 110 formed by connecting multiple edge segments 111 sequentially end to end, and at least one of the multiple edge segments 111 is provided with multiple electrodes 120.

[0040] It is understood that in some embodiments, one of the plurality of edge segments 111 is provided with a plurality of electrodes 120; in other embodiments, at least two of the plurality of edge segments 111 are provided with a plurality of electrodes 120; and in still other embodiments, each of the plurality of edge segments 111 is provided with a plurality of electrodes 120.

[0041] For example, if the dimming film 100 is polygonal in shape, a plurality of electrodes 120 are disposed on one of the sides of the polygonal dimming film 100, or a plurality of electrodes 120 are disposed on two or more of the sides of the polygonal dimming film 100, or a plurality of electrodes 120 are disposed on each side of the dimming film 100; if the dimming film 100 is irregular in shape, such as if the edge of the dimming film 100 has straight edges and curved edges, a plurality of electrodes 120 are disposed on the curved edges or straight edges.

[0042] It should be noted that the edge segment 111 can be either a straight segment or a curved segment, depending on the specific shape of the dimming film 100.

[0043] In addition, the number of electrodes 120 can be any number of two or more values, which can be set according to the actual situation.

[0044] In this embodiment, by increasing the number of electrodes 120, when the electrodes 120 are connected to the external power source through the lead-out portion 200, the current can be conducted from multiple electrodes 120 to the conductive layer of the dimming film 100. In other words, the current can be conducted from multiple locations on the edge segment 111 to the conductive layer, so that the dimming layer 150 in the dimming film 100 can start to change color from multiple locations on the edge segment 111, thereby increasing the current conduction speed on the conductive layer and thus increasing the color-changing speed of the dimming layer 150, that is, increasing the color-changing speed of the dimming film 100.

[0045] Furthermore, if at least two of the multiple edge segments 111 are provided with electrodes 120, when the electrodes 120 are connected to an external power source through the lead-out portion 200, the current can be conducted from the multiple electrodes 120 in the at least two edge segments 111 to the conductive layer of the dimming film 100, thereby further increasing the current conduction speed on the conductive layer.

[0046] It is understandable that by increasing the number of edge segments with multiple electrodes 120, the number of electrodes 120 can be further increased, thereby enabling the dimming layer 150 in the dimming film to change color from multiple locations on the edge segments 111, in order to further improve the current conduction efficiency on the conductive layer, thereby increasing the color-changing speed of the dimming layer 150, that is, increasing the color-changing speed of the dimming film 100.

[0047] It should be noted that a portion of the multiple electrodes 120 are connected to the positive terminal of an external power supply, and another portion of the multiple electrodes 120 are connected to the negative terminal of an external power supply, so that external current can be conducted through the electrodes 120 to the conductive layer of the dimming film 100, so that the dimming layer 150 in the dimming film 100 can undergo a stable and reversible color change under the action of an electric field.

[0048] like Figure 2 As shown, in some embodiments of this application, the dimming film 100 includes a first base layer 130, a first conductive layer 140, a dimming layer 150, a second conductive layer 160, and a second base layer 170 stacked sequentially.

[0049] The first substrate layer 130 and the second substrate layer 170 are both transparent substrates. The "transparent substrate" is an optically transparent material, which can be a flexible substrate material, such as polyethylene terephthalate (PET), polycarbonate (PC), polyimide (PI), cyclic olefin copolymer, or cellulose triacetate.

[0050] In addition, both the first conductive layer 140 and the second conductive layer 160 are transparent conductive layers. The material of the "transparent conductive layer" can be any transparent conductive material well known to those skilled in the art, such as indium-tin oxide (ITO), aluminum zinc oxide (AZO), fluorine-doped tin oxide (FTO), silver nanowires, graphene, carbon nanotubes, metal meshes, or silver nanoparticles.

[0051] In addition, the dimming device includes at least two leads 200, that is, the number of leads 200 can be any number of two or more, which can be set according to the actual situation.

[0052] In this embodiment, the lead-out portion 200 is disposed on the edge segment 111 having a plurality of electrodes 120, and the lead-out portion 200 is electrically connected to the electrodes 120. When the lead-out portion 200 is electrically connected to an external power source, current can be conducted through the lead-out portion 200 to the electrodes 120, and then through the electrodes 120 to the conductive layer of the dimming film 100, thereby forming an electrical connection between the dimming film 100 and the external power source through the lead-out portion 200.

[0053] In this embodiment, two lead-out sections 200 are used as an example for specific explanation.

[0054] In the two leads 200, one lead 200 is connected to one electrode 120, and the electrode 120 is used to connect to the positive terminal of an external power source; the other lead 200 is connected to the other electrode 120, and the electrode 120 is used to connect to the negative terminal of an external power source.

[0055] Understandably, at least one of the multiple leads 200 is used to connect to the positive terminal of an external power supply, and at least one is used to connect to the negative terminal of an external power supply, thereby connecting the dimming diaphragm 100 to the external power supply through the leads 200.

[0056] like Figure 1 As shown, in some embodiments of this application, the plurality of electrodes 120 includes at least one first electrode 121 and at least one second electrode 122, wherein the first electrode 121 and the second electrode 122 have opposite polarities. For example, the first electrode 121 is used to connect to the positive terminal of an external power source, and the second electrode 122 is used to connect to the negative terminal of the external power source.

[0057] Among them, such as Figure 2As shown, the edge region 110 is provided with a plurality of spaced-apart first grooves 180 and a plurality of spaced-apart second grooves 190, and the first grooves 180 and the second grooves 190 are staggered along the length direction.

[0058] In this embodiment, the first groove 180 penetrates the first base layer 130, the first conductive layer 140 and the dimming layer 150 along the thickness direction Z, and exposes a portion of the second conductive layer 160. The portion of the second conductive layer 160 exposed by the first groove 180 forms the first electrode 121, thereby enabling the second conductive layer 160 to be electrically connected to an external power source through the first electrode 121.

[0059] Furthermore, the second groove 190 penetrates the second substrate layer 170, the second conductive layer 160, and the dimming layer 150 along the thickness direction Z, exposing a portion of the first conductive layer 140. The portion of the first conductive layer 140 exposed by the second groove 190 forms the second electrode 122, thereby enabling the second conductive layer 160 to be electrically connected to an external power source through the second electrode 122. By connecting the first electrode 121 and the second electrode 122 to the external power source respectively, the dimming diaphragm 100 is electrically connected to the external power source.

[0060] It is understandable that the number of first electrodes 121 and the number of second electrodes 122 can be any number of one, two or more, depending on the actual situation.

[0061] It should be noted that the first electrode 121 and the second electrode 122 are arranged alternately along the length of the edge segment 111.

[0062] In some embodiments of this application, the at least two leads 200 include a first lead 210 and a second lead 220, wherein the first lead 210 is connected to the first electrode 121, and the second lead 220 is connected to the second electrode 122. The first lead 210 is used to connect to the positive terminal of an external power supply, and the second lead 220 is used to connect to the negative terminal of an external power supply.

[0063] It should be noted that when there are multiple first electrodes 121, the first lead-out portion 210 is connected to one of the multiple first electrodes 121; when there are multiple second electrodes 122, the second lead-out portion 220 is connected to one of the multiple second electrodes 122.

[0064] The applicant also discovered that if only one electrode 120 is provided between the lead-out portion 200 and the end of the edge segment 111, when an external current is conducted to this electrode 120, the positive and negative electric fields formed in the region between the lead-out portion 200 and the end of the edge segment 111 are relatively weak. In other words, if only one electrode 120 is provided, the current conduction effect is limited, which results in a slower color change speed near the end of the edge segment 111 close to the dimming film 100.

[0065] Based on this, such as Figure 1 As shown, in this embodiment, along the arrangement direction of the first electrode 121 and the second electrode 122, there is at least one first electrode 121 and at least one second electrode 122 between the first lead-out portion 210 or the second lead-out portion 220 and either end of the edge segment 111.

[0066] Specifically, along the length direction of the edge segment 111, the edge segment 111 has a first end 1112 and a second end 1113. The first lead-out portion 210 or the second lead-out portion 220 has at least one first electrode 121 and at least one second electrode 122 between the first lead-out portion 210 or the second lead-out portion 220 and the second end 1113.

[0067] In embodiments of this application, at least one first electrode 121 and at least one second electrode 122 are provided between the first lead-out portion 210 and one end of the edge segment 111, and at least one first electrode 121 and at least one second electrode 122 are provided between the second lead-out portion 220 and the other end of the edge segment 111. When the lead-out portion 200 is connected to an external power source through a busbar, the external current can be conducted to the first electrode 121 and the second electrode 122 through the busbar, and an electric field can be formed in the region between the lead-out portion 200 and either end of the edge segment 111, thereby increasing the color-changing speed of the dimming film 100 in the region near either end of the edge segment 111, thus increasing the color-changing speed of the dimming film 100.

[0068] Furthermore, in some embodiments, the edge region of the dimming film of this application is also provided with a plurality of spaced-apart through grooves. These through grooves connect adjacent first grooves 180 and second grooves 190, and penetrate the first substrate layer 130, the first conductive layer 140, the dimming layer 150, the second conductive layer 160, and the second substrate layer 170. Specifically, along the arrangement direction of the first grooves 180 and the second grooves 190, a through groove is provided between adjacent first grooves 180 and second grooves 190, connecting them. It should be noted that in this embodiment, by providing a through groove between the first grooves 180 and the second grooves 190, the thickness at the corresponding position of the through groove is reduced, thereby ensuring the safety and stability of the dimming device during lamination. Furthermore, along the thickness direction of the dimming diaphragm 100, an insulating portion is provided between the first busbar 800 and the second busbar 900. The insulating portion is disposed in the through groove to separate the first busbar 800 and the second busbar 900 facing the through groove, so as to prevent the first busbar 800 and the second busbar 900 from contacting each other in the through groove and avoid short circuit.

[0069] like Figure 1 As shown, in some embodiments of this application, the plurality of edge segments 111 include at least two first edge segments 1111, that is, the number of first edge segments 1111 can be any number of two or more values, which can be specifically set according to the actual situation.

[0070] In this embodiment, along the elongation direction of the first edge segment 1111, the first edge segment 1111 has a first end 1112 and a second end 1113, and the width between the two first edge segments 1111 gradually decreases from the first end 1112 to the second end 1113, that is, the dimming film 100 has a wider region and a narrower region.

[0071] The first lead-out portion 210 and the second lead-out portion 220 are disposed on one of the first edge segments 1111. It can be understood that when the first lead-out portion 210 and the second lead-out portion 220 are electrically connected to an external power source, the current can be conducted from one first edge segment 1111 to the other first edge segment 1111 through the electrode 120. Thus, by providing the lead-out portion 200 on only one first edge segment 1111, the overall color change of the dimming film can be achieved, simplifying the manufacturing process of electrode arrangement.

[0072] However, since the time required for current to travel to a wider area is greater than the time required for current to travel to a narrower area during the conduction process on the conductive layer, if the current travels at the same speed in all areas of the conductive layer, the narrower area of ​​the dimming film 100 will change color first, and the wider area will change color later. This results in a time difference in the color change of different areas on the dimming film 100, leading to uneven color change.

[0073] Based on this, such as Figure 1 As shown, in some embodiments of this application, a second lead-out portion 220 is provided between the first lead-out portion 210 and the first end portion 1112, and a first electrode 121 and a second electrode 122 are provided between the second lead-out portion 220 and the first end portion 1112; or, a first lead-out portion 210 is provided between the second lead-out portion 220 and the first end portion 1112, and a first electrode 121 and a second electrode 122 are provided between the first lead-out portion 210 and the first end portion 1112. Wherein, the first electrode 121 connected to the first lead-out portion 210 and the second electrode 122 connected to the second lead-out portion 220 are arranged adjacent to each other.

[0074] In this embodiment, since the lead-out portion 200 (i.e., the first lead-out portion 210 and the second lead-out portion 220) is connected to an external power source, its voltage is relatively high. Therefore, the closer the position is to the lead-out portion 200, the smaller the voltage drop and the higher the voltage, so the color change speed is faster. On the other hand, the farther the position is from the lead-out portion 200, the larger the voltage drop and the lower the voltage, so the color change speed is slower.

[0075] like Figure 2 As shown, in some embodiments of this application, the dimming device includes a first busbar 800 and a second busbar 900. The first busbar 800 is disposed on one side of the edge region along the thickness direction, and the second busbar 900 is disposed on the other side of the edge region along the thickness direction. The first busbar 800 is connected to the first electrode 121 and is also connected to the first lead-out portion 210. The second busbar 900 is connected to the second electrode 122 and is also connected to the second lead-out portion 220.

[0076] When the first lead-out portion 210 is electrically connected to an external power source, the first busbar 800 is also electrically connected to the external power source. This allows external current to be conducted through the first lead-out portion 210 to the first busbar 800, and then through the first busbar 800 to the plurality of first electrodes 121 disposed on the first edge segment 1111. The current is then conducted to other areas of the first conductive layer 140 through the plurality of first electrodes 121. Additionally, the second busbar 900 is connected to the second electrodes 122. When the second lead-out portion 220 is electrically connected to an external power source, the second busbar 900 is also electrically connected to the external power source. This allows external current to be conducted through the second lead-out portion 220 to the second busbar 900, and then through the second busbar 900 to the plurality of second electrodes 122 disposed on the first edge segment 1111. The current is then conducted to other areas of the second conductive layer 160 through the plurality of second electrodes 122, thus electrically connecting the dimming film to the external power source.

[0077] Furthermore, in this embodiment, a first busbar 800 is partially disposed in the first groove 180, and is connected to the first electrode 121 exposed in the first groove 180 through the portion of the first busbar 800 disposed in the first groove 180, thereby connecting multiple first electrodes 121 in series through the first busbar 800. Additionally, a second busbar 900 is partially disposed in the second groove 190, and is connected to the second electrode 122 exposed in the second groove 190 through the portion of the second busbar 900 disposed in the second groove 190, thereby connecting multiple second electrodes 122 in series through the second busbar 900.

[0078] It is understood that in this embodiment, a first electrode 121 and a second electrode 122 are provided between the lead-out portion 200 and the first end portion 1112. When the lead-out portion 200, the first electrode 121, and the second electrode 122 are electrically connected to an external power source through a busbar, current can be conducted to the lead-out portion 200, the first electrode 121, and the second electrode 122 through the busbar. When the current is conducted to the first electrode 121 and the second electrode 122 between the lead-out portion 200 and the first end portion 1112, the current can be conducted to the area between the first end portion 1112 and the lead-out portion 200 through the first electrode 121 and the second electrode 122, thereby forming an electric field in the area between the first end portion 1112 and the lead-out portion 200 to increase the color change rate of the area between the lead-out portion 200 and the first end portion 1112.

[0079] It should be noted that if the lead-out portion 200 is directly adjacent to the first end 1112 or the second end 1113 of the first edge segment 1111, the color change direction will start from the first end 1112 or the second end 1113. Therefore, in this embodiment, by adjusting the distance between the lead-out portion 200 and the first end 1112 and the second end 1113, that is, by having a first electrode 121 and a second electrode 122 between the lead-out portion 200 and the first end 1112, the time difference of current conduction through the busbar (i.e., the first busbar 800 and the second busbar 900) to the first end 1112 and the second end 1113 is reduced. Meanwhile, since there is a voltage drop on the busbar when the current is conducted through the busbar, the voltage difference between the areas near the first end 1112 and the second end 1113 and the lead-out portion 200 can be reduced, thereby adjusting the color-changing speed of the area near the first end 1112, the area near the second end 1113 and the area near the lead-out portion 200, so that the time required for the area near the first end 1112 to completely change color, the time required for the area near the second end 1113 to completely change color and the time required for the area near the lead-out portion 200 to completely change color are basically the same, thereby achieving uniformity of color change of the dimming film 100.

[0080] like Figure 1 As shown, in some other embodiments of this application, the distance between the first lead-out portion 210 and the first end portion 1112 is less than the distance between the first lead-out portion 210 and the second end portion 1113, and the distance between the second lead-out portion 220 and the first end portion 1112 is less than the distance between the second lead-out portion 220 and the second end portion 1113. The first electrode 121 connected to the first lead-out portion 210 and the second electrode 122 connected to the second lead-out portion 220 are arranged adjacent to each other.

[0081] It should be noted that since the lead-out section 200 (i.e. the first lead-out section 210 and the second lead-out section 220) is connected to the external power supply, its voltage is relatively high. Therefore, the closer the position is to the lead-out section 200, the smaller the voltage drop and the higher the voltage, so the faster the color change speed. On the other hand, the farther the position is from the lead-out section 200, the larger the voltage drop and the lower the voltage, so the slower the color change speed.

[0082] It is understandable that when the first electrode 121 and the second electrode 122 are respectively located at the first edge segment 1111, the first lead-out portion 210 and the second lead-out portion 220 are disposed at the end of the first edge segment 1111 near the first end portion 1112. By placing the lead-out portion 200 closer to the first end portion 1112, so that the lead-out portion 200 forms an electrical connection with the external power supply through the busbar, the voltage drop in the area near the first end portion 1112 is smaller because the first end portion 1112 is closer to the lead-out portion 200, that is, the color change speed in the area near the first end portion 1112 is faster. The second end portion 1113 is farther away from the lead-out portion 200, so the voltage drop in the area near the second end portion 1113 is larger, that is, the color change speed in the area near the second end portion 1113 is slower.

[0083] In other words, by increasing the color-changing speed of the dimming film 100 in the area near the first end 1112 and decreasing the color-changing speed of the dimming film 100 in the area near the second end 1113, the time required for the color-changing of the area near the first end 1112 to be completed is basically equal to the time required for the color-changing of the area near the second end 1113 to be completed, thereby ensuring that each area in the dimming film 100 can achieve synchronous and uniform color-changing.

[0084] In the above embodiments of this application, by respectively arranging the first lead-out portion 210 and the second lead-out portion 220 in the corresponding wider area between the two first edge segments 1111, due to the voltage drop on the busbar connecting the first lead-out portion 210 and the second lead-out portion 220, the voltage is lower in areas farther away from the first lead-out portion 210 and the second lead-out portion 220. Therefore, the closer the area is to the first lead-out portion 210 and the second lead-out portion 220, the smaller the voltage drop and the higher the voltage, resulting in a faster color change speed and thus increasing the width of the dimming film 100. The color-changing speed of the area with a larger width is reduced; conversely, the area further away from the first lead-out portion 210 and the second lead-out portion 220 has a larger voltage drop, which means a lower voltage and therefore a slower color-changing speed. This reduces the color-changing speed of the narrower area of ​​the dimming film 100, making the color-changing speed of the narrower area of ​​the dimming film 100 less than that of the wider area. The time required for the narrower area of ​​the dimming film 100 to completely change color is similar to the time required for the wider area to completely change color, thereby enabling the dimming film 100 to achieve uniform color changing.

[0085] The applicant also discovered that the conduction speed of current on the dimming film 100 is related to the density of the electrodes 120. That is, with the same edge length, the more electrodes 120 there are, the faster the current conducts through the electrodes 120 on the dimming film 100, i.e., the faster the color change speed; the fewer electrodes 120 there are, the slower the current conducts through the electrodes 120 on the dimming film 100, i.e., the slower the color change speed.

[0086] In other words, if the lengths of the first electrode 121 and the second electrode 122 are equal, the time required for current to be conducted through the first electrode 121 and the second electrode 122 to the wider region of the dimming film 100 is greater than the time required to be conducted to the narrower region. This results in the narrower region of the dimming film 100 changing color faster and the wider region changing color slower, leading to uneven color change in different regions of the dimming film 100.

[0087] Based on this, such as Figure 1 As shown, in some embodiments of this application, in adjacent first electrodes 121 and second electrodes 122, the length of the first electrode 121 closer to the first end 1112 is less than the length of the second electrode 122 farther from the first end 1112, and the length of the second electrode 122 closer to the first end 1112 is less than the length of the first electrode 121 farther from the first end 1112.

[0088] It is understood that the dimming film 100 has a larger width in the region near the first end 1112 and a smaller width in the region near the second end 1113. The length of the first electrode 121 near the first end 1112 is less than the length of the first electrode 121 near the second end 1113, and the length of the second electrode 122 near the first end 1112 is less than the length of the first electrode 121 near the second end 1113.

[0089] Therefore, it can be seen that the distribution density of the first electrode 121 and the second electrode 122 near the first end 1112 is greater than that near the second end 1113. This allows the external current to be conducted to the conductive layer through the multiple first electrodes 121 and second electrodes 122 between the first end 1112 and the lead-out portion 200 when the lead-out portion 200 is electrically connected to an external power source via the busbar. This increases the initial color-changing position of the dimming film 100 in a wider region (the initial color-changing position here refers to...). The number of positions corresponding to the first electrode 121 and the second electrode 122 is increased to improve the color-changing speed of the dimming film 100 in a wider area, while reducing the number of initial color-changing positions in a narrower area and reducing the color-changing speed of the dimming film 100 in a narrower area. This ensures that the time required for the dimming layer 150 in the dimming film 100 to completely change color in a wider area is basically equal to the time required for the dimming layer 150 in the narrower area to completely change color, thereby ensuring the uniformity of color change in each area of ​​the dimming film 100 and achieving synchronous color change in each area of ​​the dimming film 100.

[0090] It is understandable that when external current is conducted to the conductive layer through the first electrode 121 and the second electrode 122 (i.e., external current is conducted to the second conductive layer 160 through the first electrode 121 and to the first conductive layer 140 through the second electrode 122), since the current is first conducted to the first electrode 121 and the second electrode 122 through the busbar (i.e., external current is conducted to the first electrode 121 through the first busbar 800 and to the second electrode 122 through the second busbar 900), the corresponding area between the first electrode 121 and the second electrode 122 changes color first. As the current is conducted to the conductive layer through the first electrode 121 and the second electrode 122, the dimming layer 150 in the dimming film 100 gradually changes color along the current conduction path. Therefore, since the dimming film 100 takes longer to change color in wider areas, increasing the number of initial color-changing positions in wider areas can improve the color-changing speed of the dimming film 100 in those areas. Conversely, since the dimming film 100 takes less time to change color in narrower areas, decreasing the number of initial color-changing positions in those areas can reduce the color-changing speed of the dimming film 100 in those areas. This achieves synchronicity and uniformity in color changing of the dimming film 100 in both wider and narrower areas.

[0091] like Figure 1 As shown, in some embodiments of this application, the first edge segment 1111 is provided with a plurality of first electrodes 121 and a plurality of second electrodes 122. The length of the plurality of first electrodes 121 gradually increases from the first end 1112 to the second end 1113, and the length of the plurality of second electrodes 122 gradually increases from the first end 1112 to the second end 1113.

[0092] In some embodiments, a plurality of first electrodes 121 and a plurality of second electrodes 122 are arranged alternately along the length direction of the first edge segment 1111.

[0093] It is understood that the length of the multiple electrodes 120 gradually increases from the first end 1112 to the second end 1113, thereby increasing the number of the first electrode 121 and the second electrode 122 in the region near the first end 1112. That is, the external current can be conducted to the wider region of the dimming film 100 through the multiple first electrodes 121 and the multiple second electrodes 122, so that the wider region of the dimming layer 150 in the dimming film 100 can change color simultaneously from multiple positions, thereby increasing the color-changing speed of the dimming film 100 in the wider region. Conversely, the number of the first electrode 121 and the second electrode 122 in the region near the second end 1113 is reduced, thereby reducing the positions where the dimming layer 150 in the dimming film 100 changes color synchronously in the narrower region, thereby reducing the color-changing speed of the dimming film 100 in the narrower region. This ensures the uniformity of current conduction in both the wider and narrower regions, thereby improving the uniformity of color change of the dimming film 100.

[0094] It should be noted that, in this application, the conductive layer described in any of the above embodiments includes a first conductive layer 140 and a second conductive layer 160, and the busbar described in any of the above embodiments includes a first busbar 800 and a second busbar 900.

[0095] like Figure 3 As shown, some embodiments of this application provide a dimming device, including a first substrate layer 300, a first adhesive layer 400 and a dimming device as described in any of the above embodiments, a second adhesive layer 500 and a second substrate layer 600, which are stacked sequentially.

[0096] The dimming device further includes a sealing part 700, which is disposed between the first substrate layer 300 and the second substrate layer 600. Specifically, the sealing part 700 is connected to the first substrate layer 300 on the side facing the first substrate layer 300 and to the second substrate layer 600 on the side facing the second substrate layer 600. The first adhesive layer 400 and the second adhesive layer 500 are respectively connected to the sealing part 700 on the side facing the sealing part 700, so that a sealed space is formed by the first substrate layer 300, the sealing part 700 and the second substrate layer 600, and the dimming device is housed in the sealed space.

[0097] Specifically, both the first substrate layer 300 and the second substrate layer 600 are transparent structures. For example, the first substrate layer 300 and the second substrate layer 600 can be transparent glass, transparent acrylic sheets, or transparent PVC sheets. Preferably, the first substrate layer 300 and the second substrate layer 600 are glass, and by sandwiching the dimming device between the first substrate layer 300 and the second substrate layer 600, a sealed dimming device is formed, preventing the dimming diaphragm 100 from contacting external moisture and oxygen, thereby improving the service life of the dimming diaphragm 100 and the service life of the dimming device.

[0098] The material of the sealing part 700 includes one of the adhesives conventional in the art that have the effect of blocking water and oxygen, such as pressure-sensitive adhesive, hot melt adhesive, UV-curable adhesive, thermosetting adhesive or UV-heated dual-curing adhesive. It is understood that in some cases, the sealing part 700 may use the same material as the first adhesive layer 400 and the second adhesive layer 500.

[0099] Additionally, a shielding layer is provided on the surface of the first substrate layer 300 and / or the second substrate layer 600 corresponding to the edge area 110 of the dimming device. The shielding layer can be located on the inner or outer surface of the first substrate layer 300 and / or the second substrate layer 600; the shielding layer can be made of shielding materials such as metal or black ink. To prevent users from directly seeing the edge area 110 of the dimming device through the transparent first substrate layer 300 and / or the second substrate layer 600, and to improve the overall appearance of the device, a shielding layer is provided at the edge of the first substrate layer 300 and / or the second substrate layer 600. This shielding layer also blocks the busbar and sealant of the dimming device, thereby enhancing the aesthetics of the dimming device.

[0100] The dimming film 100 or dimming device of some embodiments of this application can be used in dimming products, and the dimming products have the functions and beneficial effects of the dimming device or dimming device in any of the above embodiments, which will not be described in detail here.

[0101] The dimming products include any one of the following: rearview mirrors, curtain walls, car sunroofs, car side windows, car windshields, electronic product casings, eyeglasses, vehicles, and display panels. Vehicles include cars, trains, airplanes, ships, etc.; electronic products include mobile phones, computers, tablets, smart wearable devices, etc.; eyeglasses include ordinary eyeglasses, AR (Augmented Reality) eyeglasses, VR (Virtual Reality) eyeglasses, sunglasses, or ski goggles, etc.

[0102] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0103] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A dimming device, characterized in that, include: A dimming film includes an edge region formed by sequentially connecting multiple edge segments end to end, wherein at least one of the multiple edge segments is provided with multiple electrodes; At least two leads are disposed on the edge segment having a plurality of said electrodes, and one lead is connected to one of said electrodes.

2. The dimming device according to claim 1, characterized in that, The plurality of electrodes includes at least one first electrode and at least one second electrode, wherein the first electrode and the second electrode have opposite polarities; The at least two leads include a first lead and a second lead, wherein the first lead is connected to the first electrode and the second lead is connected to the second electrode; Along the arrangement direction of the first electrode and the second electrode, there is at least one first electrode and at least one second electrode between the first lead-out portion or the second lead-out portion and either end of the edge segment.

3. The dimming device according to claim 2, characterized in that, The plurality of edge segments include at least two first edge segments, each first edge segment having a first end and a second end, the width between the two first edge segments gradually decreasing from the first end to the second end, and a first lead-out portion and a second lead-out portion being disposed on one of the first edge segments.

4. The dimming device according to claim 3, characterized in that, A second lead is provided between the first lead and the first end, and a first electrode and a second electrode are provided between the second lead and the first end; or, a first lead is provided between the second lead and the first end, and a first electrode and a second electrode are provided between the first lead and the first end. The first electrode connected to the first lead-out portion and the second electrode connected to the second lead-out portion are arranged adjacent to each other.

5. The dimming device according to claim 3, characterized in that, The distance between the first lead-out portion and the first end portion is less than the distance between the first lead-out portion and the second end portion, and the distance between the second lead-out portion and the first end portion is less than the distance between the second lead-out portion and the second end portion; The first electrode connected to the first lead-out portion and the second electrode connected to the second lead-out portion are arranged adjacent to each other.

6. The dimming device according to claim 3, characterized in that, In the adjacent first electrode and second electrode, the length of the first electrode closer to the first end is less than the length of the second electrode farther from the first end, and the length of the second electrode closer to the first end is less than the length of the first electrode farther from the first end.

7. The dimming device according to claim 3, characterized in that, The first edge segment is provided with a plurality of first electrodes and a plurality of second electrodes, the length of the plurality of first electrodes gradually increases from the first end to the second end, and the length of the plurality of second electrodes gradually increases from the first end to the second end.

8. The dimming device according to any one of claims 2 to 7, characterized in that, The dimming film includes a first base layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second base layer, which are stacked sequentially. The edge region is provided with multiple first grooves and multiple second grooves; The first groove penetrates the first substrate layer, the first conductive layer, and the electrochromic layer, and exposes a portion of the second conductive layer to form the first electrode; The second groove penetrates the second base layer, the second conductive layer and the electrochromic layer, and exposes a portion of the first conductive layer to form the second electrode.

9. The dimming device according to any one of claims 2 to 7, characterized in that, The dimming device includes a first busbar and a second busbar. The first busbar is disposed on one side of the edge region along the thickness direction, and the second busbar is disposed on the other side of the edge region along the thickness direction. The first busbar is connected to the first electrode, and the second busbar is connected to the second electrode.

10. A dimming device, characterized in that, The film comprises a first substrate layer, a first adhesive layer, a dimming device as described in any one of claims 1 to 9, a second adhesive layer, and a second substrate layer, which are stacked in sequence. A sealing portion is provided on the periphery of the dimming film, and the sealing portion is disposed between the first substrate layer and the second substrate layer.

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