Electrochromic device, device and terminal product

Abstract

The utility model relates to the technical field of electrochromism, and provides an electrochromism device, an electrochromism device and a terminal product. The electrochromic device comprises a conductive substrate layer, a first composite conductive layer, a second composite conductive layer and a connecting piece, the first composite conductive layer, the second composite conductive layer and the connecting piece are arranged on the conductive substrate layer, the first composite conductive layer at least comprises a first conductive layer and a first insulating layer which are arranged in a stacked mode, and the second composite conductive layer at least comprises a second conductive layer and a second insulating layer which are arranged in a stacked mode. The two ends of the connecting piece are located on the side, away from the first insulating layer, of the first conductive layer and the side, away from the second insulating layer, of the second conductive layer respectively, so that electric conduction can be formed among the first composite conductive layer, the second composite conductive layer and the connecting piece; therefore, each composite conductive layer can realize rapid conduction.

Description

Technical Field

[0001] The present application relates to the field of optoelectronic technologies, and particularly to an electrochromic device, an electrochromic device and a terminal product. Background Art

[0002] Electrochromism refers to the phenomenon that the optical properties of a material undergo stable and reversible color changes under the action of an external electric field, which is manifested as reversible changes in color and transparency in appearance. To achieve electrochromism, an electrochromic device usually needs to be electrically connected to an external power supply.

[0003] In the prior art, it is usually necessary to provide a plurality of busbars at the edge portion of the electrochromic device to supply power to the electrochromic device through the busbars. When using a unidirectionally conductive busbar, when the ends of different busbars are directly overlapped, electrical conduction cannot be formed, so each busbar needs to be provided with a lead-out structure to be electrically connected to an external power supply. In this way, as many lead-out structures are required as there are busbars, resulting in a relatively high production cost of the electrochromic device. Summary of the Utility Model

[0004] An object of the embodiments of the present application is to provide an electrochromic device, aiming to solve the problem of relatively high production cost caused by non-conduction between multiple busbars of the existing electrochromic device.

[0005] To achieve the above object, the technical solution adopted in the present application is:

[0006] In a first aspect, the present application provides an electrochromic device, including a conductive base layer, a first composite conductive layer, a second composite conductive layer and a connecting member are provided on the conductive base layer; the first composite conductive layer at least includes a first conductive layer and a first insulating layer stacked, and the first conductive layer is disposed between the conductive base layer and the first insulating layer; the second composite conductive layer at least includes a second conductive layer and a second insulating layer stacked, and the second conductive layer is disposed between the conductive base layer and the second insulating layer; the connecting member is disposed on the conductive base layer, and both ends of the connecting member are electrically connected to the first conductive layer and the second conductive layer respectively.

[0007] In some embodiments, the length of the connecting member is less than the length of the first composite conductive layer, and / or the length of the connecting member is less than the length of the second composite conductive layer.

[0008] In some embodiments, the electrochromic device has a first edge extending in a first direction and a second edge extending in a second direction; and the first direction and the second direction intersect; wherein, the first composite conductive layer is disposed on the first edge, the second composite conductive layer is disposed on the second edge, and both ends of the connecting member extend along the first edge and / or the second edge.

[0009] In some embodiments, an insulating portion is provided on a side of the connecting member facing away from the conductive base layer. The insulating portion is located between the first composite conductive layer and the second composite conductive layer, and the insulating portion covers a part of the surface of the connecting member.

[0010] In some embodiments, the conductive base layer includes a first conductive base layer and a second conductive base layer, and an electrochromic layer is provided between the first conductive base layer and the second conductive base layer; the first composite conductive layer, the second composite conductive layer, and the connecting member are all provided on the first conductive base layer; and / or, the first composite conductive layer, the second composite conductive layer, and the connecting member are all provided on the second conductive base layer.

[0011] In some embodiments, a groove is provided at a peripheral edge of the electrochromic device. The groove includes a first groove and a second groove; the first groove penetrates through the first conductive base layer and the electrochromic layer along the stacking direction of the first conductive base layer, the electrochromic layer, and the second conductive base layer; the second groove penetrates through the second conductive base layer and the electrochromic layer along the stacking direction of the first conductive base layer, the electrochromic layer, and the second conductive base layer.

[0012] In some embodiments, the first composite conductive layer and the second composite conductive layer are at least partially located in the first groove and are electrically connected to the second conductive base layer, and a side of the first composite conductive layer and / or the second composite conductive layer close to the center of the electrochromic device extends to the peripheral edge of the first conductive base layer; and / or, the first composite conductive layer and the second composite conductive layer are at least partially located in the second groove and are electrically connected to the first conductive base layer, and a side of the first composite conductive layer and / or the second composite conductive layer close to the center of the electrochromic device extends to the peripheral edge of the second conductive base layer.

[0013] In some embodiments, the connecting member is at least partially located in the first groove, and a part of the connecting member connected to the first composite conductive layer forms a first overlapping area, and a part of the connecting member connected to the second composite conductive layer forms a second overlapping area. The first overlapping area and / or the second overlapping area are at least partially located in the first groove; and / or, the connecting member is at least partially located in the second groove, and a part of the connecting member connected to the first composite conductive layer forms a third overlapping area, and a part of the connecting member connected to the second composite conductive layer forms a fourth overlapping area. The third overlapping area and / or the fourth overlapping area are at least partially located in the second groove.

[0014] In some embodiments, it further includes a first lead electrode and a second lead electrode. The first lead electrode is electrically connected to the first composite conductive layer, and the first lead electrode is located between the first composite conductive layer and the conductive base layer; or, the first lead electrode is electrically connected to the second composite conductive layer, and the first lead electrode is located between the second composite conductive layer and the conductive base layer; and, the second lead electrode is electrically connected to the first composite conductive layer, and the second lead electrode is located between the first composite conductive layer and the conductive base layer; or, the second lead electrode is electrically connected to the second composite conductive layer, and the second lead electrode is located between the second composite conductive layer and the conductive base layer.

[0015] In a second aspect, an electrochromic device provided by an embodiment of the present application includes a substrate and an electrochromic device, and the substrate is stacked on one side of the electrochromic device.

[0016] In a third aspect, an electrochromic terminal product provided by the present application includes the electrochromic device of the first aspect or the electrochromic device of the second aspect. Among them, the terminal product includes any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a means of transportation, and a display panel.

[0017] The beneficial effect of the present application is that by providing a connecting member between the first composite conductive layer and the second composite conductive layer, one end of the connecting member is located between the first composite conductive layer and the conductive base layer, and the other end of the connecting member is located between the second composite conductive layer and the conductive base layer, the single-sided conductive first composite conductive layer and the single-sided conductive second composite conductive layer can be electrically connected through the connecting member. When a voltage is applied to the first composite conductive layer or the second composite conductive layer, each composite conductive layer can achieve rapid conduction, solving the technical problem in the prior art that an extraction structure needs to be provided for each composite conductive layer to conduct current, resulting in a relatively high production cost. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic three-dimensional structure diagram of the first conductive base layer, the electrochromic layer, and the second conductive base layer of the electrochromic device provided by the embodiment of the present application, which are stacked.

[0020] Figure 2 It is a schematic top view structure diagram of an electrochromic device provided by the embodiment of the present application.

[0021] Figure 3 Another top view structural schematic diagram of an electrochromic device provided for an embodiment of the present application;

[0022] Figure 4 Another top view structural schematic diagram of an electrochromic device provided for an embodiment of the present application;

[0023] Figure 5 Another top view structural schematic diagram of an electrochromic device provided for an embodiment of the present application;

[0024] Figure 6 Another top view structural schematic diagram of an electrochromic device provided for an embodiment of the present application;

[0025] Figure 7 Another top view structural schematic diagram of an electrochromic device provided for an embodiment of the present application;

[0026] Figure 8 Another top view structural schematic diagram of an electrochromic device provided for an embodiment of the present application;

[0027] Figure 9 Side view of the first composite conductive layer, the second composite conductive layer and the connecting member provided on the conductive base layer for an embodiment of the present application;

[0028] Figure 10 Side view of the first composite conductive layer, the second composite conductive layer and the connecting member provided on the conductive base layer for another embodiment of the present application;

[0029] Figure 11 Side view of the first composite conductive layer, the second composite conductive layer and the connecting member provided on the conductive base layer for yet another embodiment of the present application;

[0030] Figure 12 Top view structural schematic diagram of the electrochromic device provided for an embodiment of the present application;

[0031] Figure 13 Top view structural schematic diagram of the first conductive base layer provided for an embodiment of the present application;

[0032] Figure 14 Top view structural schematic diagram of the second conductive base layer provided for an embodiment of the present application;

[0033] Figure 15 For Figure 12 Cross-sectional view taken along the line A-A of an embodiment in

[0034] Figure 16 For Figure 12 Cross-sectional view taken along the line A-A of another embodiment in

[0035] Figure 17 For Figure 12 A cross-sectional view taken along the A-A plane of another embodiment;

[0036] Figure 18 A side view of a first conductive base layer, an electrochromic layer, and a second conductive base layer of an electrochromic device provided by an embodiment of the present application, stacked from another perspective;

[0037] Figure 19 A side view of a first conductive base layer, an electrochromic layer, and a second conductive base layer of an electrochromic device provided by another embodiment of the present application, stacked from another perspective;

[0038] Figure 20 A side view of a first conductive base layer, an electrochromic layer, and a second conductive base layer of an electrochromic device provided by yet another embodiment of the present application, stacked from another perspective;

[0039] Figure 21 A perspective structural schematic diagram of an electrochromic device provided by an embodiment of the present application.

[0040] Main element symbol description: 1000 - electrochromic device; 101 - visible area; 102 - edge; 103 - first edge; 104 - second edge; 110 - first conductive base layer; 1101 - first conductive base layer; 1102 - first base layer; 120 - electrochromic layer; 130 - second conductive base layer; 1301 - second conductive base layer; 1302 - second base layer; 200 - composite conductive layer; 210 - first composite conductive layer; 211 - first conductive layer; 212 - first insulating layer; 220 - second composite conductive layer; 221 - second conductive layer; 222 - second insulating layer; 230 - connecting member; 300 - insulating portion; 400 - groove; 410 - first groove; 420 - second groove; 510 - first lead electrode; 520 - second lead electrode; 2000 - electrochromic device; 2001 - first substrate; 2002 - second substrate. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe in detail the specific embodiments (or specific implementation manners) of the present application with reference to the accompanying drawings. Those skilled in the art should understand that the described embodiments are only for helping to understand the present application and should not be regarded as specific limitations to the present application.

[0042] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly disposed on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of 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 cannot be construed as a limitation on the patent. The terms "first" and "second" are only for the convenience of description and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0043] As described in the background art, in order to supply power to an electrochromic device, it is usually necessary to provide a plurality of busbars at its edge portion. In particular, when a single-sided conductive busbar is used, the conductive surface of the busbar is connected to the conductive surface of the electrochromic device. If the ends of different busbars are directly overlapped at this time, it will cause the conductive surface of one busbar to be connected to the non-conductive surface of another busbar, so that effective electrical conduction cannot be formed between different busbars, resulting in the need to separately provide a lead-out structure for each busbar in order to establish an electrical connection with an external power source, increasing the production cost of the electrochromic device.

[0044] In view of the above technical problems, in a first aspect, an embodiment of the present application provides an electrochromic device. The structural schematic diagram of the electrochromic device is as

[0045] shown, including a first conductive base layer 110, an electrochromic layer 120, and a second conductive base layer 130 that are sequentially stacked. The electrochromic layer 120 is disposed between the first conductive base layer 110 and the second conductive base layer 130. The conductive base layer of the electrochromic device 1000 includes the first conductive base layer 110 and the second conductive base layer 130. A first composite conductive layer 210, a second composite conductive layer 220, and a connecting member 230 are disposed on the conductive surface of the same conductive base layer. Figure 1 shown, including a first conductive base layer 110, an electrochromic layer 120, and a second conductive base layer 130 that are sequentially stacked. The electrochromic layer 120 is disposed between the first conductive base layer 110 and the second conductive base layer 130. The conductive base layer of the electrochromic device 1000 includes the first conductive base layer 110 and the second conductive base layer 130. A first composite conductive layer 210, a second composite conductive layer 220, and a connecting member 230 are disposed on the conductive surface of the same conductive base layer.

[0046] Specifically, a first composite conductive layer 210, a second composite conductive layer 220, and a connector 230 are provided on the same conductive base layer. The first composite conductive layer 210 at least includes a first conductive layer 211 and a first insulating layer 212 arranged in a stacked manner, and the first conductive layer 211 is disposed between the conductive base layer and the first insulating layer 212; the second composite conductive layer 220 at least includes a second conductive layer 221 and a second insulating layer 222 arranged in a stacked manner, and the second conductive layer 221 is disposed between the conductive base layer and the second insulating layer 222; the connector 230 is provided on the conductive base layer, and two ends of the connector 230 are electrically connected to the first conductive layer 211 and the second conductive layer 221 respectively.

[0047] Reference Figure 2 , the interior of the electrochromic device 1000 is a visible area 101. It should be noted that the range of the visible area is marked by a dotted line in the figure, and the area within the dotted line is the visible area, which is only an example in this embodiment. The specific position range of the visible area is not limited by the position of the dotted line. The electrochromic material at the visible area 101 can reversibly change its color and transmittance under the action of voltage or current. By arranging the first composite conductive layer 210, the second composite conductive layer 220, and the connector 230 at the edge of the conductive base layer of the electrochromic device 1000, the effect of accelerating current conduction is achieved, so that the visible area 101 of the electrochromic device 1000 can change color quickly. Specifically, the first composite conductive layer 210, the second composite conductive layer 220, and the connector 230 are arranged at the position of the first conductive base layer 110 corresponding to the edge 102 of the electrochromic device; and / or, the first composite conductive layer 210, the second composite conductive layer 220, and the connector 230 are arranged at the position of the second conductive base layer 130 corresponding to the edge 102 of the electrochromic device.

[0048] In the above embodiment, the conductive base layer includes a first conductive base layer 110 and a second conductive base layer 130, and an electrochromic layer 120 is provided between the first conductive base layer 110 and the second conductive base layer 130; the first composite conductive layer 210, the second composite conductive layer 220, and the connector 230 are all provided on the first conductive base layer 110; and / or, the first composite conductive layer 210, the second composite conductive layer 220, and the connector 230 are all provided on the second conductive base layer 130.

[0049] Further, reference Figure 9 and Figure 10, the first composite conductive layer 210 includes a first conductive layer 211 and a first insulating layer 212 which are stacked; the second composite conductive layer 220 includes a second conductive layer 221 and a second insulating layer 222 which are stacked. Both the first conductive layer 211 and the second conductive layer 221 have conductivity, and the first conductive layer 211 and the second conductive layer 221 are made of conductive materials such as, but not limited to, copper foil, silver wire, conductive adhesive, and conductive resin. The first insulating layer 212 and the second insulating layer 222 are made of materials such as, but not limited to, high-temperature adhesive (polyimide or polyester) materials or insulating coatings. Optionally, an adhesive is provided on the first insulating layer 212 and the second insulating layer 222, and by providing the adhesive, the first conductive layer 211 and the first insulating layer 212 are stacked and connected to form an integral structure, such as a coil; or the second conductive layer 221 and the second insulating layer 222 are stacked and connected to form an integral structure, such as a coil.

[0050] In this embodiment, the first conductive layer 211 and the second conductive layer 221 each have two relatively arranged surfaces. Since one surface of the first conductive layer 211 of the first composite conductive layer 210 is completely covered by the first insulating layer 212, and one surface of the second conductive layer 221 of the second composite conductive layer 220 is completely covered by the second insulating layer 222, when the first composite conductive layer 210 and the second composite conductive layer 220 are arranged on the same conductive base layer, both the first conductive layer 211 and the second conductive layer 221 are electrically connected to the same conductive base layer.

[0051] Furthermore, when the first composite conductive layer 210 and the second composite conductive layer 220 are partially overlapped, the first conductive layer 211 of the first composite conductive layer 210 contacts the second insulating layer 222 of the second composite conductive layer 220, or the second conductive layer 221 of the second composite conductive layer 220 contacts the first insulating layer 212 of the first composite conductive layer 210, so that an electrical connection cannot be formed between the first conductive layer 211 and the second conductive layer 221. Therefore, by providing the connector 230, current can be quickly transferred from one composite conductive layer to the other composite conductive layer through the connector 230.

[0052] In some embodiments, referring to Figure 9 , a surface portion of the connector 230 away from the conductive base layer is covered by the first composite conductive layer 210 and the second composite conductive layer 220. In other embodiments, referring to Figure 10 , a surface of the connector 230 away from the conductive base layer is completely covered by the first composite conductive layer 210 and the second composite conductive layer 220.

[0053] In the above embodiments, the two ends of the connecting member 230 are electrically connected to the first conductive layer 211 and the second conductive layer 221 respectively. Specifically, the two ends of the connecting member 230 are respectively located on the side of the first conductive layer 211 away from the first insulating layer 212 and the side of the second conductive layer 221 away from the second insulating layer 222. The connecting member 230 forms an electrical conduction between the first composite conductive layer 210 and the second composite conductive layer 220. By providing the lead-out structure on one of the first composite conductive layer 210 and the second composite conductive layer 220, current can be transferred from one composite conductive layer to the other composite conductive layer through the connecting member 230.

[0054] In some embodiments, the length of the connecting member 230 is less than the length of the first composite conductive layer 210, and / or the length of the connecting member 230 is less than the length of the second composite conductive layer 220.

[0055] Optionally, the connecting member 230 is made of conductive materials such as, but not limited to, copper foil, silver wire, conductive adhesive, and conductive resin. The connecting member 230 has two opposite surfaces, and both surfaces are conductive surfaces. One conductive surface is connected to the conductive surface of the conductive base layer, and the other conductive surface is at least partially electrically connected to the first composite conductive layer 210 and the second composite conductive layer 220.

[0056] In this embodiment, the first composite conductive layer 210 or the second composite conductive layer 220 is provided as an integral structure. Among them, the first insulating layer 212 and the first conductive layer 211 are stacked, and the first insulating layer 212 serves to protect the first conductive layer 211; similarly, the second insulating layer 222 and the second conductive layer 221 are stacked, serving to protect the second conductive layer 221, preventing the first conductive layer 211 and the second conductive layer 221 from being directly exposed to the air and being easily oxidized or scratched.

[0057] Optionally, an adhesive is provided between the first insulating layer 212 and the first conductive layer 211 to connect the first insulating layer 212 to the first conductive layer 211 through the adhesive; an adhesive is provided between the second insulating layer 222 and the second conductive layer 221 to connect the second insulating layer 222 to the second conductive layer 221 through the adhesive, so that multiple layers of structures can be disposed at the edge of the electrochromic device 1000 at one time, reducing the production steps of the product and improving the production efficiency of the electrochromic device 1000.

[0058] In addition, since the first conductive layer 211 and the first insulating layer 212, and the second conductive layer 221 and the second insulating layer 222 are of an integral structure, it is avoided that when the conductive layer and the insulating layer are attached separately, the conductive layer and the insulating layer cannot be aligned, ensuring that the first insulating layer 212 can completely cover the first conductive layer 211, or the second insulating layer 222 can completely cover the second conductive layer 221, enabling the first insulating layer 212 and the second insulating layer 222 to achieve a good covering and protecting effect.

[0059] Furthermore, the first insulating layer 212 not only covers the surface of the first conductive layer 211 away from the conductive base layer, but also extends to cover the side surfaces of the first conductive layer 211; the second insulating layer 222 not only covers the surface of the second conductive layer 221 away from the conductive base layer, but also extends to cover the side surfaces of the second conductive layer 221. By setting the first insulating layer 212 to extend beyond both sides of the first conductive layer 211, or the second insulating layer 222 to extend beyond both sides of the second conductive layer 221, it plays a role in bonding and fixing, as well as sealing and protecting, the first conductive layer 211 and the second conductive layer 221.

[0060] Optionally, the width of the first composite conductive layer 210 can be set to be greater than or equal to 1 mm and less than or equal to 20 mm. The width of the first composite conductive layer 210 can be set within any one of the width ranges of 1 mm - 2 mm, 2 mm - 3 mm, 3 mm - 4 mm, 4 mm - 5 mm, 5 mm - 6 mm, 6 mm - 7 mm, 7 mm - 8 mm, 8 mm - 9 mm, 9 mm - 10 mm, 10 mm - 11 mm, 11 mm - 12 mm, 12 mm - 13 mm, 13 mm - 14 mm, 14 mm - 15 mm, 15 mm - 16 mm, 16 mm - 17 mm, 17 mm - 18 mm, 18 mm - 19 mm, and 19 mm - 20 mm. For example, the width of the first composite conductive layer 210 can be set within the width range of 2 mm - 6 mm.

[0061] Optionally, the width of the second composite conductive layer 220 can be set to be greater than or equal to 1 mm and less than or equal to 20 mm. The width of the second composite conductive layer 220 can be set within any one of the width ranges of 1 mm - 2 mm, 2 mm - 3 mm, 3 mm - 4 mm, 4 mm - 5 mm, 5 mm - 6 mm, 6 mm - 7 mm, 7 mm - 8 mm, 8 mm - 9 mm, 9 mm - 10 mm, 10 mm - 11 mm, 11 mm - 12 mm, 12 mm - 13 mm, 13 mm - 14 mm, 14 mm - 15 mm, 15 mm - 16 mm, 16 mm - 17 mm, 17 mm - 18 mm, 18 mm - 19 mm, and 19 mm - 20 mm. For example, the width of the second composite conductive layer 220 can be set within the width range of 2 mm - 6 mm.

[0062] Optionally, the width of the connecting member 230 can be set to be greater than or equal to 1 mm and less than or equal to 20 mm, and the width of the second composite conductive layer 220 can be set to any one of the width ranges of 1 mm - 2 mm, 2 mm - 3 mm, 3 mm - 4 mm, 4 mm - 5 mm, 5 mm - 6 mm, 6 mm - 7 mm, 7 mm - 8 mm, 8 mm - 9 mm, 9 mm - 10 mm, 10 mm - 11 mm, 11 mm - 12 mm, 12 mm - 13 mm, 13 mm - 14 mm, 14 mm - 15 mm, 15 mm - 16 mm, 16 mm - 17 mm, 17 mm - 18 mm, 18 mm - 19 mm, and 19 mm - 20 mm. For example, the width of the connecting member 230 can be set within the width range of 2 mm - 6 mm.

[0063] The electrochromic layer is made of electrochromic materials and can exhibit stable and reversible color change under the action of an external electric field. The electrochromic layer 120 is one or a combination of two or more of a liquid electrochromic medium, a solid electrochromic medium, or a sol electrochromic medium. For example, types such as Polymer Dispersed Liquid Crystal (PDLC) layer, Suspended Particle Device (SPD), and Electrochromic (EC).

[0064] Preferably, the electrochromic layer 120 is an electrochromic stacked layer, and the electrochromic stacked layer includes an ion storage layer, an electrolyte layer, and a color-changing material layer stacked in sequence. By disposing the electrochromic stacked layer between the first conductive base layer 110 and the second conductive base layer 130, an electrochromic device is formed.

[0065] In some embodiments, referring to Figures 15 to 17 , the first conductive base layer 110 includes a first base layer 1102 stacked and a first conductive base layer 1101 disposed on the surface of the first base layer 1102; the second conductive base layer 130 includes a second base layer 1302 stacked and a second conductive base layer 1301 disposed on the surface of the second base layer 1302. Further, the electrochromic layer 120 is disposed on the side of the first conductive base layer 1101 away from the first base layer 1102, and the electrochromic layer 120 is disposed on the side of the second conductive base layer 1301 away from the second base layer 1302.

[0066] In an embodiment of the present application, the first base layer 1102 is used to support the first conductive base layer 1101, and the second base layer 1302 is used to support the second conductive base layer 1301. Among them, the first base layer 1102 and the second base layer 1302 are flexible substrates with a water and oxygen barrier layer. Optionally, the first base layer 1102 or the second base layer 1302 includes a substrate and a water and oxygen barrier layer plated on at least one surface of the substrate.

[0067] Preferably, the first base layer 1102 and the second base layer 1302 are selected as transparent flexible substrates, which have light transmittance, such as Polyethylene Glycol Terephthalate (PET), Polycarbonate (PC), etc., and can also be set as a glass substrate; the first conductive base layer 1101 and the second conductive base layer 1301 are set as Indium-Tin-oxide (ITO), Aluminum Zinc Oxide (AZO), Fluorine Doped Tinoxide (FTO). The first conductive base layer 1101 and the second conductive base layer 1301 are preferably set as ITO, so that both the first conductive base layer 110 and the second conductive base layer 130 have good electrical conductivity and light transmittance.

[0068] In the electrochromic device provided in the present application, the conductive base layer includes a first conductive base layer 110 and a second conductive base layer 130. An electrical connection is formed by disposing a first composite conductive layer 210, a second composite conductive layer 220, and a connector 230 on the first conductive base layer 110, or an electrical connection is formed by disposing a first composite conductive layer 210, a second composite conductive layer 220, and a connector 230 on the second conductive base layer 130.

[0069] It can be understood that the first conductive layer 211 and the second conductive layer 221 are essentially a kind of conductor with conductive ability and can be connected to the conductive base layer; and the resistance of the first conductive layer 211 is less than the resistance of the first conductive base layer 110 and the second conductive base layer 130, and the resistance of the second conductive layer 221 is less than the resistance of the first conductive base layer 110 and the second conductive base layer 130. By electrically connecting the first conductive layer 211 to the conductive base layer and the second conductive layer 221 to the conductive base layer, both the first composite conductive layer 210 and the second composite conductive layer 220 can be used to connect to an external power source, so as to electrically connect the external power source to the electrochromic device 1000, apply a voltage to the electrochromic layer 120 by using the external power source, and control the electrochromic layer 120 to change color, thereby improving the color change speed of the electrochromic device 1000.

[0070] In some embodiments of the present application, the length of the connecting member 230 is less than the length of the first composite conductive layer 210 or the length of the second composite conductive layer 220.

[0071] Specifically, referring to Figures 3 to 8 , the first composite conductive layer 210 or the second composite conductive layer 220 is arranged in a strip shape, and the first composite conductive layer 210 and the second composite conductive layer 220 are located on the first edge 103 and the second edge 104 of the electrochromic device 1000. The length of the connecting member 230 is less than the length of the first composite conductive layer 210 or the second composite conductive layer 220. The two ends of the connecting member 230 are electrically connected to the first composite conductive layer 210 and the second composite conductive layer 220 respectively. One end of the connecting member 230 is stacked with the first composite conductive layer 210 in the thickness direction, and the other end is stacked with the second composite conductive layer 220 in the thickness direction. Since the central region of the electrochromic device 1000 is a visible region, the visible region can reversibly change in color and transmittance under the action of voltage or current. By arranging the first composite conductive layer 210, the second composite conductive layer 220 and the connecting member 230 on the edge of the electrochromic device 1000, the function of quickly conducting current is achieved, so that the visible region of the electrochromic device can change color quickly.

[0072] Furthermore, the first composite conductive layer 210 and the second composite conductive layer 220 are arranged on multiple edges of the electrochromic device 1000 and extend along different edges of the electrochromic device 1000. The current is conducted to the first composite conductive layer 210 and the second composite conductive layer 220 through the lead-out structure, and then quickly conducted to the central region of the conductive base layer. By means of the surrounding arrangement, the electrochromic device 1000 can change color more quickly and evenly. In addition, the width of the connecting member 230 can be adjusted according to the edge shape of the electrochromic device, so that the connecting member 230 can conduct the first composite conductive layer 210 and the second composite conductive layer 220. Exemplarily, when the widths of the first composite conductive layer 210 and the second composite conductive layer 220 are the same, the width of the connecting member 230 can be equal to the width of the first composite conductive layer 210 or the second composite conductive layer 220 to ensure that the current conduction speed on the connecting member 230 is similar to the current conduction speed of the composite conductive layer.

[0073] In some embodiments of the present application, the electrochromic device has a first edge 103 extending in a first direction and a second edge 104 extending in a second direction; and the first direction and the second direction intersect; wherein, the first composite conductive layer 210 is arranged on the first edge 103, the second composite conductive layer 220 is arranged on the second edge 104, and the two ends of the connecting member extend along the first edge 103 and / or the second edge 104.

[0074] Referring to Figures 4 to 5, the electrochromic device 1000 has a first edge 103 that extends in a first direction; the electrochromic device 1000 has a second edge 104 that extends in a second direction; the first direction and the second direction are perpendicular to the lamination direction of the electrochromic device 1000, and the first direction of the first edge 103 and the second direction of the second edge 104 intersect. Among them, the first composite conductive layer 210 is disposed on the first edge 103 of the electrochromic device 1000 and extends along the first direction, and the second composite conductive layer 220 is disposed on the second edge 104 of the electrochromic device 1000 and extends along the second direction. One end of the connecting member 230 extends along the first direction of the first edge 103, the other end of the connecting member 230 extends along the second direction of the second edge 104, and both ends of the connecting member 230 are stacked with the first composite conductive layer 210 and the second composite conductive layer 220 respectively, and form an electrical connection with the first conductive layer 211 and the second conductive layer 221.

[0075] In the above embodiment, by arranging the first composite conductive layer 210 and the second composite conductive layer 220 on different edges of the electrochromic device 1000, the first composite conductive layer 210 and the second composite conductive layer 220 can quickly conduct current from the position of the lead-out structure to each edge of the electrochromic device 1000, so that the electrochromic device 1000 gradually changes color from the edge of the device to the center of the device, making the color change more uniform.

[0076] It should be noted that when the first direction of the first edge 103 and the second direction of the second edge 104 intersect, the part between the two ends of the connecting member 230 can be located on the first edge 103, or on the second edge 104, or on both the first edge 103 and the second edge 104 at the same time. The shape and position of the connecting member 230 can be adjusted according to the edge of the electrochromic device.

[0077] In some embodiments of the present application, the connecting member 230 has at least two ends. One end of the connecting member 230 is connected to the first composite conductive layer 210, and the other end of the connecting member 230 is connected to the second composite conductive layer 220. When both the first composite conductive layer 210 and the second composite conductive layer 220 extend along the first edge 103, both ends of the connecting member 230 extend along the first edge 103; when the first composite conductive layer 210 extends along the first edge 103 and the second composite conductive layer 220 extends along the second edge 104, both ends of the connecting member 230 extend along the first edge 103 and the second edge 104 respectively; when both the first composite conductive layer 210 and the second composite conductive layer 220 extend along the second edge 104, both ends of the connecting member 230 extend along the second edge.

[0078] Optionally, refer to Figure 6, the first direction is the X direction shown in the figure, and the first direction is perpendicular to the stacking direction; the second direction is the Y direction shown in the figure, and the second direction is perpendicular to the stacking direction; the first direction and the second direction intersect. The first composite conductive layer 210 is disposed on the first edge 103 of the electrochromic device, and the second composite conductive layer 220 is disposed on the second edge 104 of the electrochromic device. The connecting member 230 is disposed at a corner of the electrochromic device 1000. One end of the connecting member 230 extends along the first direction of the first edge 103, and the other end of the connecting member 230 extends along the second direction of the second edge 104. Further, at the connection between the connecting member 230 and the conductive composite layer, both ends of the connecting member 230 are in electrical contact with the first conductive layer 211 of the first composite conductive layer 210 and the second conductive layer 221 of the second composite conductive layer 220, so as to form electrical conduction between the first composite conductive layer 210 and the second composite conductive layer 220.

[0079] Optionally, both the first composite conductive layer 210 and the second composite conductive layer 220 extend along the first edge 103 or the second edge 104. Specifically, referring to Figure 7 , both the first composite conductive layer 210 and the second composite conductive layer 220 extend along the second edge 104. The connecting member 230 has opposite ends. Both ends of the connecting member 230 are stacked with the first composite conductive layer 210 and the second composite conductive layer 220 respectively, and are electrically connected to the first conductive layer 211 and the second conductive layer 221. By arranging the first composite conductive layer 210 and the second composite conductive layer 220 on the first edge 103 or the second edge 104 of the electrochromic device 1000, when producing a large electrochromic device 1000, the sizes of the first composite conductive layer 210 and the second composite conductive layer 220 can be made smaller, and then the first composite conductive layer 210 and the second composite conductive layer 220 can be arranged in segments on the edge of the electrochromic device 1000 in multiple steps, reducing the processing difficulty of large devices.

[0080] It can be understood that referring to Figure 8 , the included angle between the first direction and the second direction is not limited to a right angle. Further, the value range of the included angle is from 10° to 170°.

[0081] It should be noted that the electrochromic device 1000 usually has an irregular shape, so the edges of the electrochromic device include straight edges and curved edges. On the straight edges of the electrochromic device, the first edge 103 and the second edge 104 have the first direction and the second direction extending along the straight edge. Further, on the curved edges of the electrochromic device (not shown in the figure), the first direction of the first edge 103 refers to the tangent direction of the end of the first edge 103 close to the connecting member 230, and the second direction of the second edge 104 refers to the tangent direction of the end of the second edge 104 close to the connecting member 230.

[0082] In the above embodiments, when the first direction intersects the second direction, the included angle between the first direction and the second direction changes the laying direction of the composite conductive layer 200, resulting in the need for the composite conductive layer 200 to bend and form wrinkles. By providing a connecting member 230 that conforms to the bent portion of the electrochromic device 1000 to conduct the first composite conductive layer 210 and the second composite conductive layer 220, the laying difficulty of the composite conductive layer 200 can be reduced, and the generation of wrinkles in the electrochromic device 1000 can be reduced.

[0083] In some embodiments of the present application, referring to Figure 11 , an insulating portion 300 is provided on the side of the connecting member 230 facing away from the conductive base layer. The insulating portion 300 is located between the first composite conductive layer 210 and the second composite conductive layer 220, and the insulating portion 300 covers a part of the surface of the connecting member 230.

[0084] Specifically, the insulating portion 300 has adhesiveness and insulation properties. The material of the insulating portion 300 includes colloids that are conventional in the art and have insulating and water-oxygen isolating effects. Referring to Figure 11 and Figure 16 , the insulating portion 300 is provided on the connecting member 230 and is located between the first composite conductive layer 210 and the second composite conductive layer 220. The insulating portion 300 can be provided on the part of the surface of the connecting member 230 that is not covered by the first composite conductive layer 210 and the second composite conductive layer 220. By providing the insulating portion 300 to cover a part of the surface of the connecting member 230, the insulating portion 300 can play a role in protecting the connecting member 230, effectively avoiding local damage to the connecting member 230 caused by water and oxygen in the air. Further, the insulating portion 300 extends towards the inside of the electrochromic device 1000, and the inner edge of the insulating portion 300 extends beyond the inner edge of the connecting member 230.

[0085] Further, continuing to refer to Figure 11, the first composite conductive layer 210, the second composite conductive layer 220, and the insulating portion 300 can completely cover the connecting member 230. The first insulating layer 212 of the first composite conductive layer 210 and the second insulating layer 222 of the second composite conductive layer 220 both have the function of insulation. By cooperating with the insulating portion 300, it is possible to prevent the first conductive base layer 110 and the second conductive base layer 130 from being short-circuited due to electrical connection through the connecting member 230. In addition, by arranging the first composite conductive layer 210, the second composite conductive layer 220, and the insulating portion 300 to completely cover the connecting member 230, it is also possible to block water oxygen and other substances in the external environment from reaching the surface of the connecting member 230 through the gaps between the first composite conductive layer 210 and the insulating portion 300, or between the second composite conductive layer 220 and the insulating portion 300, thereby playing a comprehensive sealing and protecting role for the connecting member 230 and ensuring the conductive function of the electrochromic device at the connecting member 230.

[0086] In an embodiment of the present application, a groove 400 is provided at the peripheral edge of the electrochromic device. The groove includes a first groove 410 and a second groove 420; the first groove 410 penetrates through the first conductive base layer 110 and the electrochromic layer 120 along the stacking direction of the first conductive base layer 110, the electrochromic layer 120, and the second conductive base layer 130; the second groove 420 penetrates through the second conductive base layer 130 and the electrochromic layer 120 along the stacking direction of the first conductive base layer 110, the electrochromic layer 120, and the second conductive base layer 130.

[0087] In some embodiments of the present application, a first groove 410 is provided at the peripheral edge of the electrochromic device. The first groove 410 penetrates through the first conductive base layer 110 and the electrochromic layer 120 along the stacking direction of the first conductive base layer 110, the electrochromic layer 120, and the second conductive base layer 130, exposing the conductive surface of the second conductive base layer 130.

[0088] In some embodiments of the present application, a second groove 420 is provided at the peripheral edge of the electrochromic device. The second groove 420 penetrates through the second conductive base layer 130 and the electrochromic layer 120 along the stacking direction of the first conductive base layer 110, the electrochromic layer 120, and the second conductive base layer 130, exposing the conductive surface of the first conductive base layer 110.

[0089] Optionally, refer to Figures 12 to 14, a plurality of grooves 400 are alternately arranged at intervals along the peripheral edge of the electrochromic device 1000. The grooves 400 include a first groove 410 that penetrates through the first conductive base layer 110 and the electrochromic layer 120 along the stacking direction; and a second groove 420 that penetrates through the second conductive base layer 130 and the electrochromic layer 120 along the stacking direction. The number of the first grooves 410 and the second grooves 420 are both a plurality, which can be any value greater than the value two and can be specifically set according to the actual situation.

[0090] In some embodiments of the present application, referring to Figure 18 , the electrochromic device 1000 includes a first conductive base layer 110, an electrochromic layer 120, and a second conductive base layer 130 that are sequentially stacked. The electrochromic layer 120 is located between the first conductive base layer 110 and the second conductive base layer 130. The composite conductive layer 200 is at least partially within the first groove 410 or at least partially within the second groove 420.

[0091] Optionally, referring to Figure 19 , the first composite conductive layer 210 and the second composite conductive layer 220 are disposed on the first conductive base layer 110. Within the first groove 410, two ends of the connecting member 230 are respectively connected to the first composite conductive layer 210 and the second composite conductive layer 220. The first composite conductive layer 210 and the second composite conductive layer 220 are electrically connected to the second conductive base layer 130 through the connecting member 230. Optionally, referring to Figure 20 , the first composite conductive layer 210 and the second composite conductive layer 220 are disposed on the second conductive base layer 130. Within the second groove 420, two ends of the connecting member 230 are respectively connected to the first composite conductive layer 210 and the second composite conductive layer 220. The first composite conductive layer 210 and the second composite conductive layer 220 are electrically connected to the first conductive base layer 110 through the connecting member 230.

[0092] In the above embodiments provided by the present application, the first composite conductive layer 210 and the second composite conductive layer 220 are provided on both sides of the electrochromic device 1000 in the stacking direction. Specifically, the first composite conductive layer 210 and the second composite conductive layer 220 on one side are electrically connected to the second conductive base layer 130 through a plurality of first grooves 410; the first composite conductive layer 210 and the second composite conductive layer 220 on the other side are electrically connected to the first conductive base layer 110 through a plurality of second grooves 420. Thus, a multi-electrode structure can be alternately formed at the peripheral edge of the electrochromic device 1000, and the color change speed of the electrochromic device 1000 can be accelerated.

[0093] In some embodiments of the present application, the first composite conductive layer 210 and the second composite conductive layer 220 are at least partially located in the first groove 410 and are electrically connected to the second conductive base layer 130, and one side of the first composite conductive layer 210 and / or the second composite conductive layer 220 close to the center of the electrochromic device extends to the peripheral edge of the first conductive base layer 110; and / or, the first composite conductive layer 210 and the second composite conductive layer 220 are at least partially located in the second groove 420 and are electrically connected to the first conductive base layer 110, and one side of the first composite conductive layer 210 and / or the second composite conductive layer 220 close to the center of the electrochromic device extends to the peripheral edge of the second conductive base layer 130.

[0094] In some embodiments, referring to Figure 17 , the composite conductive layer 200 extends along the peripheral edge of the electrochromic device 1000. One side of the composite conductive layer 200 close to the center of the electrochromic device is disposed on the peripheral edge of the first conductive base layer 110, and the other side of the composite conductive layer 200 away from the center of the electrochromic device is disposed on the peripheral edge of the second conductive base layer 130. Two sides of the composite conductive layer 200 are respectively connected to the non-conductive surface of the first conductive base layer 110 and the conductive surface of the second conductive base layer 130.

[0095] In some other embodiments, continuing to refer to Figure 17 , the composite conductive layer 200 extends along the peripheral edge of the electrochromic device 1000. One side of the composite conductive layer 200 close to the center of the electrochromic device is disposed on the peripheral edge of the second conductive base layer 130, and the other side of the composite conductive layer 200 away from the center of the electrochromic device is disposed on the peripheral edge of the first conductive base layer 110. Two sides of the composite conductive layer 200 are respectively connected to the non-conductive surface of the second conductive base layer 130 and the conductive surface of the first conductive base layer 110.

[0096] In the above embodiments, the first composite conductive layer 210 covers the first groove 410 or the second groove 420, and the first composite conductive layer 210 is respectively connected to the peripheral edges of the first conductive base layer 110 and the second conductive base layer 130, so that the first composite conductive layer 210 can cover the inner wall of the groove; or, the second composite conductive layer 220 covers the first groove 410 or the second groove 420, and the second composite conductive layer 220 is respectively connected to the peripheral edges of the first conductive base layer 110 and the second conductive base layer 130, so that the second composite conductive layer 220 can cover the inner wall of the groove. Through the covering and protecting effects of the first composite conductive layer 210 and the second composite conductive layer 220, moisture and other impurities in the external environment can be prevented from entering the interior of the electrochromic layer 120 from the side, playing a protective role for the electrochromic device 1000 and improving the reliability of the electrochromic device 1000. It should be noted that the side of the electrochromic layer 120 refers to the surface in the first groove 410 or the second groove 420 where the electrochromic layer 120 is not covered by the first conductive base layer 110 or the second conductive base layer 130.

[0097] In addition, referring to Figure 16 , on the basis of covering the connecting member 230, the insulating portion 300 on the connecting member 230 extends and connects to the first conductive base layer 110 or the second conductive base layer 130, so that the side of the electrochromic layer 120 is located in the encapsulation environment formed by the first composite conductive layer 210, the second composite conductive layer 220 and the insulating portion 300. Thus, moisture, oxygen, etc. are effectively prevented from entering the interior of the electrochromic layer 120, resulting in the electrochromic layer 120 being eroded by water and oxygen, improving the stability and reliability of the electrochromic device 1000, and further extending the working life of the device.

[0098] In some embodiments of the present application, the connecting member 230 is at least partially located in the first groove 410, and the portion of the connecting member 230 connected to the first composite conductive layer 210 forms a first overlapping region, and the portion of the connecting member 230 connected to the second composite conductive layer 220 forms a second overlapping region. The first overlapping region and / or the second overlapping region is at least partially located in the first groove 410; and / or, the connecting member 230 is at least partially located in the second groove 420, and the portion of the connecting member 230 connected to the first composite conductive layer 210 forms a third overlapping region, and the portion of the connecting member 230 connected to the second composite conductive layer 220 forms a fourth overlapping region. The third overlapping region and / or the fourth overlapping region is at least partially located in the second groove 420. Specifically, the connecting member 230 being partially located in the groove means that when the connecting member 230 extends along the edge of the first conductive base layer 110, the connecting member 230 passes above the first groove 410 and is electrically connected to the second conductive base layer 130 through the first groove 410; when the connecting member 230 extends along the edge of the second conductive base layer 130, the connecting member 230 passes above the second groove 420 and is electrically connected to the first conductive base layer 110 through the second groove 420. It should be noted that when the thickness of the connecting member 230 exceeds the depth of the groove, only a part of the connecting member 230 is located in the groove in the thickness direction.

[0099] Optionally, referring to Figure 19 , the connecting member 230 is located in the first groove 410, and the portion where the connecting member 230 and the first composite conductive layer 210 are stacked forms a first overlapping region, and the portion where the connecting member 230 and the second composite conductive layer 220 are stacked forms a second overlapping region. In the first overlapping region, the end of the connecting member 230 is located between the first conductive layer 211 and the first conductive base layer 110, and the first composite conductive layer 210 and the connecting member 230 are stacked and electrically connected; in the second overlapping region, the end of the connecting member 230 is located between the second conductive layer 221 and the first conductive base layer 110, and the second composite conductive layer 220 and the connecting member 230 are stacked and electrically connected. In this embodiment, the first composite conductive layer 210 and the second composite conductive layer 220 conduct electricity for the first conductive base layer 110 of the electrochromic device through the connecting member 230, facilitating the connection of the electrochromic device 1000 to an external power source.

[0100] Optionally, referring to Figure 20, the connecting member 230 is located within the second groove 420. The portion where the connecting member 230 and the first composite conductive layer 210 are stacked forms a third overlapping region, and the portion where the connecting member 230 and the second composite conductive layer 220 are stacked forms a fourth overlapping region. In the third overlapping region, the end of the connecting member 230 is located between the first conductive layer 211 and the second conductive base layer 130. The first composite conductive layer 210 and the connecting member 230 are stacked to form an electrical connection. In the fourth overlapping region, the end of the connecting member 230 is located between the second conductive layer 221 and the second conductive base layer 130. The second composite conductive layer 220 and the connecting member 230 are stacked to form an electrical connection. In this embodiment, the first composite conductive layer 210 and the second composite conductive layer 220 conduct electricity for the second conductive base layer 130 of the electrochromic device through the connecting member 230, facilitating the connection of the electrochromic device 1000 to an external power source.

[0101] Continuing to refer to Figure 19 and Figure 20 , the entirety of the connecting member 230 is located within the first groove 410, or the entirety of the connecting member 230 is located within the second groove 420. The length of the connecting member 230 is less than the length of the first groove 410 or the second groove 420. Therefore, the portion of the connecting member 230 that is stacked with the first composite conductive layer 210 and the second composite conductive layer 220 is located within the same first groove 410 or second groove 420. It should be noted that the length of the connecting member 230 refers to the total length of the connecting member 230 in the first direction and / or the second direction. Correspondingly, the length of the first groove 410 refers to the total length of the first groove 410 in the first direction and / or the second direction; the length of the second groove 420 refers to the total length of the second groove 420 in the first direction and / or the second direction.

[0102] In some other embodiments, the connecting member 230 is partially located within the first groove 410 or the second groove 420. Among them, the length of the connecting member 230 is greater than the length of the first groove 410 or the second groove 420, and both ends of the connecting member 230 are respectively located within two first grooves 410 or two second grooves 420. Specifically, one end of the connecting member 230 is located within one first groove 410, and the other end is located within another first groove 410. At least a part of the middle section of the connecting member 230 is located outside the first groove 410. Or, one end of the connecting member 230 is located within one second groove 420, and the other end is located within another second groove 420. At least a part of the middle section of the connecting member 230 is located outside the second groove 420. In this way, when there are multiple grooves on the bent portion of the electrochromic device 1000, the connecting member 230 can be correspondingly lengthened and located within multiple first grooves 410 or multiple second grooves 420 to achieve electrical connection between the first composite conductive layer 210 and the second composite conductive layer 220.

[0103] It should be noted that in the above embodiments, the two first grooves 410 may be two adjacent first grooves 410 or two spaced-apart first grooves 410; or, the two second grooves 420 may be two adjacent second grooves 420 or two spaced-apart second grooves 420.

[0104] By setting the overlapping area to be located within the first groove 410 or the second groove 420, the portion where the connector 230 and the first composite conductive layer 210 or the second composite conductive layer 220 are stacked thicker is located within the groove with a smaller thickness, so as to reduce the maximum thickness at the edge of the electrochromic device 1000 and make the thickness of the entire device edge as uniform as possible, so as to avoid that when the electrochromic device 1000 is pressed, the local thickness at the edge of the electrochromic device is relatively large, resulting in a relatively large stress on the overlapping area of the electrochromic device 1000, causing the first composite conductive layer 210, the second composite conductive layer 220 or the connector 230 to wrinkle or break when being laminated with the glass.

[0105] In some embodiments, within the first groove 410, the stacked thickness of the first composite conductive layer 210 and the connector 230 is less than or equal to the stacked thickness of the first conductive base layer 110 and the electrochromic layer 120 in the stacking direction; or, within the first groove 410, the stacked thickness of the second composite conductive layer 220 and the connector 230 is less than or equal to the stacked thickness of the first conductive base layer 110 and the electrochromic layer 120 in the stacking direction; or, within the first groove 410, the stacked thickness of the first composite conductive layer 210, the second composite conductive layer 220 and the connector 230 is less than or equal to the stacked thickness of the first conductive base layer 110 and the electrochromic layer 120 in the stacking direction.

[0106] In other embodiments, within the second groove 420, the stacked thickness of the first composite conductive layer 210 and the connector 230 is less than or equal to the stacked thickness of the second conductive base layer 130 and the electrochromic layer 120 in the stacking direction; or, within the second groove 420, the stacked thickness of the second composite conductive layer 220 and the connector 230 is less than or equal to the stacked thickness of the second conductive base layer 130 and the electrochromic layer 120 in the stacking direction; or, the stacked thickness of the first composite conductive layer 210, the second composite conductive layer 220 and the connector 230 is less than or equal to the stacked thickness of the second conductive base layer 130 and the electrochromic layer 120 in the stacking direction.

[0107] It should be noted that in the above embodiments, the stacked thickness of the overlapping area is the maximum thickness of the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230 as a whole, which can be the maximum stacked thickness of the first composite conductive layer 210 and the connecting member 230; it can also be the maximum stacked thickness of the second composite conductive layer 220 and the connecting member 230; or, it can be the maximum stacked thickness of the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230; it is not limited herein, and the maximum thickness is used as a reference.

[0108] Since the electrochromic device 1000 needs to perform a pressing operation subsequently, in the first groove 410, the maximum thickness of the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230 as a whole does not exceed the first conductive base layer 110 in the stacking direction; in the second groove 420, the maximum thickness of the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230 as a whole does not exceed the second conductive base layer 130 in the stacking direction; it can ensure that the stress on the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230 in the first groove 410 or the second groove 420 during pressing will not be too large, avoiding wrinkling of the first composite conductive layer 210, the second composite conductive layer 220, or the connecting member 230, or cracking at the edge of the electrochromic device 1000 during lamination, thereby improving the overall stability of the electrochromic device.

[0109] In addition, the connecting member 230 is disposed in the first groove 410 or the second groove 420 at the corner of the electrochromic device 1000, so that the portions of the two ends of the connecting member 230 stacked with the composite conductive layer 200 are located in the groove with a smaller thickness, further improving the thickness uniformity of the electrochromic device 1000 as a whole, so that the stress received by each part of the electrochromic device 1000 during subsequent lamination is more uniform.

[0110] In some embodiments of the present application, it further includes a first lead electrode 510 and a second lead electrode 520. The first lead electrode 510 is electrically connected to the first composite conductive layer 210, and the first lead electrode 510 is located between the first composite conductive layer 210 and the conductive base layer; or, the first lead electrode 510 is electrically connected to the second composite conductive layer 220, and the first lead electrode 510 is located between the second composite conductive layer 220 and the conductive base layer; and, the second lead electrode 520 is electrically connected to the first composite conductive layer 210, and the second lead electrode 520 is located between the first composite conductive layer 210 and the conductive base layer; or, the second lead electrode 520 is electrically connected to the second composite conductive layer 220, and the second lead electrode 520 is located between the second composite conductive layer 220 and the conductive base layer.

[0111] In some embodiments, the first lead electrode 510 is disposed between the first conductive layer 211 and the first conductive base layer 110, so that the first composite conductive layer 210 and the first conductive base layer 110 can be electrically connected to an external power source through the first lead electrode 510. Alternatively, the first lead electrode 510 is disposed between the second conductive layer 221 and the first conductive base layer 110, so that the second composite conductive layer 220 and the first conductive base layer 110 can be electrically connected to an external power source through the first lead electrode 510.

[0112] In other embodiments, the second lead electrode 520 is disposed between the first conductive layer 211 and the second conductive base layer 130, so that the first composite conductive layer 210 and the second conductive base layer 130 can be electrically connected to an external power source through the second lead electrode 520. Alternatively, the second lead electrode 520 is disposed between the second conductive layer 221 and the second conductive base layer 130, so that the second composite conductive layer 220 and the second conductive base layer 130 can be electrically connected to an external power source through the second lead electrode 520.

[0113] In the above embodiments, by disposing the lead electrode on the side of the first composite conductive layer 210 close to the electrochromic layer 120, or disposing the lead electrode on the side of the second composite conductive layer 220 close to the electrochromic layer 120, the lead electrode can be directly connected to the conductive layers of the first composite conductive layer 210 and the second composite conductive layer 220 without removing part of the first insulating layer 212 or the second insulating layer 222, simplifying the production process of the electrochromic device 1000.

[0114] In addition, conductive adhesives are provided on the conductive surfaces of the first conductive layer 211 and the second conductive layer 221 for electrical connection with the conductive base layer. When setting the lead electrode, the lead electrode can be first adhesively pre-fixed to the first conductive layer 211 or the second conductive layer 221, and then the lead electrode is fixed on the conductive base layer through the first composite conductive layer 210 or the second composite conductive layer 220, making the production process simpler. Of course, in other embodiments, the lead electrode can also be adhesively bonded to the conductive base layer with a conductive adhesive in advance, and then the lead electrode is covered by the composite conductive layer 200. Optionally, the conductive adhesive can be, but is not limited to, an anisotropic conductive film (ACF).

[0115] In addition, the first composite conductive layer 210 or the second composite conductive layer 220 covers the first lead electrode 510, playing a role in bonding and fixing the first lead electrode 510; or, the first composite conductive layer 210 or the second composite conductive layer 220 covers the second lead electrode 520, playing a role in bonding and fixing the second lead electrode 520. This ensures the connection quality and stability between the first lead electrode 510, the second lead electrode 520 and the electrochromic device 1000, and prevents the first lead electrode 510 or the second lead electrode 520 from detaching from the electrochromic device 1000, which may affect the color-changing function of the electrochromic device 1000.

[0116] Optionally, the first lead electrode 510 or the second lead electrode 520 includes a conductive substrate and an adhesive layer coated on at least one surface of the conductive substrate. Specifically, the adhesive layer uses a conductive colloid, including but not limited to any one of polyimide resin, phenolic resin, polyurethane, and acrylic resin. Exemplarily, the adhesive layer can be an anisotropic conductive film (ACF). Thus, the bonding between the lead electrode and the composite conductive layer, or between the lead electrode and the conductive base layer can be achieved more conveniently and stably.

[0117] The electrochromic device provided in this application can be more conveniently connected to an external power source by respectively providing the first lead electrode 510 and the second lead electrode 520 on the electrochromic device 1000, which is convenient for driving and controlling the electrochromic device. The external power source conducts current to the first composite conductive layer 210 and the second composite conductive layer 220 on the first conductive base layer 110 through the first lead electrode 510, and then conducts the current to the central part of the first conductive base layer 110. And the second lead electrode 520 conducts the current to the first composite conductive layer 210 and the second composite conductive layer 220 on the second conductive base layer 130, and then conducts the current to the central part of the second conductive base layer 130, so as to form an electric field on both sides of the electrochromic layer 120, thereby driving the electrochromic layer 120 to be colored or faded, and making the electrochromic device show a change in light transmittance in appearance, so as to realize the adjustment of the light transmittance of the scene where the electrochromic device is applied.

[0118] In the second aspect of the embodiments of this application, an electrochromic device 2000 is provided, including a substrate, and the substrate is stacked on one side of the electrochromic device. Since the electrochromic device 2000 adopts the above-mentioned electrochromic device 1000, it has all the advantages of the above-mentioned electrochromic device 1000.

[0119] Specifically, refer to Figure 21, substrates are provided on both sides of the electrochromic device in the stacking direction. The first substrate 2001 and the second substrate 2002 are bonded to both sides of the electrochromic device in its own thickness direction through a substrate adhesive layer; a first adhesive layer is provided between the first substrate 2001 and the electrochromic device 1000, a second adhesive layer is provided between the second substrate 2002 and the electrochromic device 1000, and a third adhesive layer is provided around the electrochromic device 1000. The first lead electrode 510 and the second lead electrode 520 pass through the third adhesive layer and are electrically connected to an external power supply.

[0120] Optionally, the material of the adhesive layer can be polyvinyl butyral (PVB), optically clear adhesive (OCA), ethylene-vinyl acetate copolymer (EVA), ionomeric interlayer (SGP), liquid optical clear adhesive (LOCA), or other materials with similar properties.

[0121] When the first adhesive layer, the second adhesive layer, and the third adhesive layer are of the same material, during the high-temperature lamination process, the first adhesive layer, the second adhesive layer, and the third adhesive layer fuse into an integral structure to seal the entire electrochromic device 2000, improving the sealing performance and reliability of the electrochromic device 1000. The substrate has light transmittance and is preferably glass. Further, the electrochromic device is laminated between at least two layers of glass to form a color-changing glass. It should be noted that the two layers of glass completely cover the electrochromic device 1000.

[0122] Optionally, a shielding layer is provided on the surface of the first substrate 2001 or the second substrate 2002 corresponding to the edge portion of the electrochromic device 1000. The shielding layer can be provided on the inner surface or the outer surface of the first substrate 2001 or the second substrate 2002. It should be noted that the inner surface of the first substrate 2001 or the second substrate 2002 refers to the surface close to the electrochromic device 1000, and the outer surface of the first substrate 2001 or the second substrate 2002 refers to the surface facing away from the electrochromic device 1000.

[0123] Optionally, the shielding layer can be made of shielding materials such as metal and black ink. The width of the shielding layer is greater than or equal to the widths of the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230. By forming an occlusion on the edge portion of the electrochromic device 1000 through the shielding layer, it is possible to prevent a user from directly seeing the first composite conductive layer 210, the second composite conductive layer 220, and the connecting member 230 of the electrochromic device 1000 through the transparent first substrate 2001 or the second substrate 2002, thereby enhancing the aesthetics of the electrochromic device 2000.

[0124] A third aspect of the embodiments of the present application provides an electrochromic product, including the above-mentioned electrochromic device 1000 or electrochromic device 2000.

[0125] Among them, the electrochromic product includes any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a vehicle, and a display panel. Since the electrochromic product adopts the above-mentioned electrochromic device 1000 or electrochromic device 2000, it thus has all the advantages of the above-mentioned electrochromic device 1000 or electrochromic device 2000.

[0126] In some specific embodiments, the electronic terminal is a smart window. The electrochromic device 1000 can be connected to a control circuit, and the color and transparency of the window can be changed by adjusting the current, thereby realizing the function of automatically adjusting light and heat.

[0127] In some specific embodiments, the electronic terminal is an electronic device. The electrochromic device 1000 can be used to drive pixels to realize the display of text and graphics. By controlling the current of the electrode, the color and brightness of the pixels can be changed.

[0128] In some specific embodiments, the electronic terminal is a car windshield. The electrochromic device can be used to adjust the color of the glass, thereby reducing the temperature difference between the inside and outside of the car and improving driving comfort.

[0129] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be subject to the scope defined by the claims.

Claims

1. An electrochromic device, characterized in that: It comprises a conductive base layer, on which a first composite conductive layer, a second composite conductive layer and a connecting piece are arranged; The first composite conductive layer at least comprises a first conductive layer and a first insulating layer which are stacked, wherein the first conductive layer is disposed between the conductive base layer and the first insulating layer; the second composite conductive layer at least comprises a second conductive layer and a second insulating layer which are stacked, wherein the second conductive layer is disposed between the conductive base layer and the second insulating layer; The connecting member is arranged on the conductive base layer, and two ends of the connecting member are electrically connected to the first conductive layer and the second conductive layer respectively.

2. The electrochromic device according to claim 1, characterized in that: The length of the connecting member is shorter than the length of the first composite conductive layer, and / or the length of the connecting member is shorter than the length of the second composite conductive layer.

3. The electrochromic device according to claim 1, characterized in that: The electrochromic device has a first edge extending along a first direction and a second edge extending along a second direction; and the first direction and the second direction intersect; wherein, The first composite conductive layer is arranged on the first edge, the second composite conductive layer is arranged on the second edge, and both ends of the connecting member extend along the first edge and / or the second edge.

4. The electrochromic device according to claim 1, characterized in that: An insulating portion is provided on a side of the connector facing away from the conductive base layer. The insulating portion is located between the first composite conductive layer and the second composite conductive layer, and the insulating portion covers a portion of the surface of the connector.

5. The electrochromic device according to claim 1, characterized in that: The conductive substrate layer comprises a first conductive substrate layer and a second conductive substrate layer, and an electrochromic layer is disposed between the first conductive substrate layer and the second conductive substrate layer; The first composite conductive layer, the second composite conductive layer and the connecting member are all disposed on the first conductive base layer; and / or the first composite conductive layer, the second composite conductive layer and the connecting member are all disposed on the second conductive base layer.

6. The electrochromic device according to claim 5, characterized in that: The peripheral edge of the electrochromic device is provided with grooves, and the grooves include a first groove and a second groove; The first groove penetrates the first conductive base layer and the electrochromic layer along the stacking direction of the first conductive base layer, the electrochromic layer and the second conductive base layer; The second groove penetrates the second conductive substrate layer and the electrochromic layer along a stacking direction of the first conductive substrate layer, the electrochromic layer and the second conductive substrate layer.

7. The electrochromic device according to claim 6, characterized in that: The first composite conductive layer and the second composite conductive layer are at least partially located in the first groove and electrically connected to the second conductive base layer, and a side of the first composite conductive layer and / or the second composite conductive layer close to the center of the electrochromic device extends to the peripheral edge of the first conductive base layer; and / or, The first composite conductive layer and the second composite conductive layer are at least partially located in the second groove and are electrically connected to the first conductive base layer, and the first composite conductive layer and / or the second composite conductive layer extend from one side close to the center of the electrochromic device to the peripheral edge of the second conductive base layer.

8. The electrochromic device according to claim 6, characterized in that: The connector is at least partially located in the first groove, and the portion where the connector is connected to the first composite conductive layer forms a first overlapping region, and the portion where the connector is connected to the second composite conductive layer forms a second overlapping region, and the first overlapping region and / or the second overlapping region are at least partially located in the first groove; and / or, The connector is at least partially located in the second groove, and the portion where the connector is connected to the first composite conductive layer forms a third overlapping region, and the portion where the connector is connected to the second composite conductive layer forms a fourth overlapping region, and the third overlapping region and / or the fourth overlapping region are at least partially located in the second groove.

9. The electrochromic device according to claim 1, characterized in that: Also includes a first extraction electrode and a second extraction electrode, the first extraction electrode is electrically connected to the first composite conductive layer, and the first extraction electrode is located between the first composite conductive layer and the conductive base layer; or, the first extraction electrode is electrically connected to the second composite conductive layer, and the first extraction electrode is located between the second composite conductive layer and the conductive base layer; and, The second lead electrode is electrically connected to the first composite conductive layer, and the second lead electrode is located between the first composite conductive layer and the conductive base layer; or, the second lead electrode is electrically connected to the second composite conductive layer, and the second lead electrode is located between the second composite conductive layer and the conductive base layer.

10. An electrochromic device, characterized in that: The invention comprises a substrate and the electrochromic device according to any one of claims 1 to 9, wherein the substrate is stacked on one side of the electrochromic device.

11. An electrochromic terminal product, characterized in that: It comprises the electrochromic device as described in any one of claims 1 to 9 or the electrochromic device as described in claim 10, wherein the terminal product comprises any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a vehicle or a display panel.

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