Electrochromic device, electrochromic device and terminal equipment

Abstract

The utility model provides an electrochromic device, an electrochromic device and terminal equipment, and relates to the technical field of electrochromism, the electrochromic device provided by the utility model comprises a diaphragm, an attaching assembly and a leading-out piece, the attaching assembly is arranged on the edge area of the membrane and comprises a first attaching piece and a second attaching piece, the first attaching piece and the second attaching piece are attached to the membrane, and the ends, close to each other, of the first attaching piece and the second attaching piece are in lap joint to form at least one lap joint part; the lead-out piece is connected with the diaphragm, and the projection of the lead-out piece on the plane where the diaphragm is located and the projection of at least one lap joint part on the plane where the diaphragm is located are arranged in a staggered mode. The lap joint position of the first attaching piece and the second attaching piece avoids the leading-out piece, the phenomenon that the thickness of the lap joint position is too large is avoided, and the film cracking risk in the film combining process can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrochromic technology, especially to an electrochromic device, an electrochromic apparatus and a terminal equipment. BACKGROUND

[0002] The electrochromic device is a device capable of changing color under the action of voltage, and the core of the electrochromic device is electrochromic material. The electrochromic material changes its light absorption characteristics when voltage is applied or removed, thereby changing color.

[0003] The electrochromic device is usually configured as a laminated structure. In the preparation process, the electrochromic film is clamped between two layers of transparent substrates, and then the three are formed into one body by using a high-temperature bonding process. The shape of the film is often irregular, and it is difficult to directly attach the film at the position with small sharp corners or radii by using copper foil, high-temperature glue or waterproof glue and other attachment materials. Generally, the attachment material needs to be cut in advance to form a profile, and the attachment material also needs to be connected to the material at the remaining position in a lap joint manner, which may cause the thickness of the film at the lap joint to be greater than the thickness of the film at the remaining area.

[0004] In addition, a flexible circuit board (FPC) is usually used to connect the electrodes of the film to achieve connection of the film to an external power supply, so that the film can change color under the action of an external voltage. The flexible circuit board is attached to the copper foil in the edge area of the film, which results in a larger thickness of the film at the position of the lead-out piece. If the lap joint position formed by the attachment material and the material at the remaining position overlaps the position of the lead-out piece, the thickness will further increase, thereby increasing the thickness difference of the film at other areas, which increases the risk of film cracking during bonding. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an electrochromic device, an electrochromic apparatus and a terminal equipment to reduce the risk of film cracking caused by excessive thickness at the position of the lead-out piece.

[0006] In the first aspect, the utility model provides an electrochromic device, which comprises a film, an attachment assembly and a lead-out piece. The attachment assembly is arranged in the edge area of the film. The attachment assembly comprises a first attachment part and a second attachment part. The first attachment part and the second attachment part are respectively attached to the film, and the first attachment part and the second attachment part are connected to each other at the end portion to form at least one lap joint portion. The lead-out piece is connected to the film, and the projection of the lead-out piece on the plane of the film is arranged in a staggered manner with the projection of the at least one lap joint portion on the plane of the film.

[0007] Optionally, the first attachment part and the second attachment part are bus bars or waterproof glue, or a combination formed by covering the bus bars with waterproof glue.

[0008] Optionally, the first attaching component includes a first bus bar, and the second attaching component includes a second bus bar, and the first bus bar and the second bus bar are overlapped to form the overlapping part.

[0009] Optionally, the first attaching component includes a first waterproof adhesive, and the second attaching component includes a second waterproof adhesive, and the first waterproof adhesive and the second waterproof adhesive are overlapped to form the overlapping part.

[0010] Optionally, the attaching assembly has a plurality of overlapping parts, and projections of the plurality of overlapping parts on the plane of the diaphragm are arranged in a staggered manner.

[0011] Optionally, the diaphragm is provided with a plurality of electrodes arranged at intervals, and a groove is formed between two adjacent electrodes.

[0012] The projection of at least one overlapping part on the plane of the diaphragm is located within the projection of the groove on the plane of the diaphragm.

[0013] Optionally, the diaphragm is provided with a plurality of electrodes arranged at intervals, the overlapping part is electrically connected to the electrodes, and the projection of the overlapping part on the plane of the diaphragm overlaps one of the electrodes.

[0014] Optionally, the first attaching component and the second attaching component are respectively arranged on opposite surfaces of the diaphragm, and cooperate with the diaphragm to form at least one overlapping part.

[0015] Optionally, the lead-out piece overlaps another electrode in the projection on the plane of the diaphragm.

[0016] Optionally, the overlapping part is located at a linear edge portion of the diaphragm.

[0017] Optionally, the diaphragm is provided with a plurality of electrodes arranged at intervals, and a groove is formed between two adjacent electrodes; the overlapping part includes a bus bar overlapping part formed by overlapping bus bars and a glue overlapping part formed by overlapping waterproof glue; the projection of the bus bar overlapping part on the plane of the diaphragm is located within the projection of the electrodes on the plane of the diaphragm, and the projection of the glue overlapping part on the plane of the diaphragm is located within the groove.

[0018] Optionally, the diaphragm includes a first conductive layer, an electrochromic layer and a second conductive layer which are sequentially stacked, the first conductive layer and the second conductive layer are respectively connected to the lead-out piece, and the first conductive layer and the second conductive layer are respectively attached with the attaching assembly.

[0019] In a second aspect, the terminal device includes the electrochromic device of the first aspect, and the terminal device includes any one of a rearview mirror, a curtain wall, an automobile sunroof, an automobile side window, an automobile windshield, an electronic product shell, glasses, a vehicle, and a display panel.

[0020] In a third aspect, the electrochromic device includes a first substrate layer, a second substrate layer, and the electrochromic device of any one of the above aspects, wherein the electrochromic device is sandwiched between the first substrate layer and the second substrate layer.

[0021] The first attachment member and the second attachment member are respectively attached to the diaphragm, the end portions of the first attachment member and the second attachment member are overlapped to form an overlapping portion, the lead-out piece is connected to the diaphragm, and the projection of the lead-out piece on the plane of the diaphragm is arranged in a staggered manner with the projection of the overlapping portion on the plane of the diaphragm, so that the overlapping position of the first attachment member and the second attachment member avoids the lead-out piece, thereby avoiding the thickness of the overlapping position being too large, and the risk of diaphragm cracking during the diaphragm bonding process is reduced.

[0022] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the related art, the following will briefly introduce the drawings needed to be used in the specific embodiments or related art descriptions. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0024] Figure 1 A top view schematic diagram of the electrochromic device provided by an embodiment of the present application is shown in the figure.

[0025] Figure 2 A cross-sectional view of the electrochromic device provided by an embodiment of the present application is shown in the figure.

[0026] Figure 3 A cross-sectional view of the electrochromic device provided by another embodiment of the present application is shown in the figure.

[0027] Figure 4 A cross-sectional view of the electrochromic device provided by another embodiment of the present application is shown in the figure.

[0028] Icon: 100 - diaphragm; 101 - electrode; 102 - groove; 200 - attaching assembly; 201 - lap joint; 2011 - busbar lap joint; 2012 - adhesive lap joint; 210 - first busbar; 220 - second busbar; 230 - first waterproof adhesive; 240 - second waterproof adhesive; 300 - lead-out piece. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. Physical quantities in the formula, such as no separate marking, should be understood as the basic quantity of the International System of Units, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration, etc. mathematical operation.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two devices. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] As shown in Figure 1 and Figure 2 The electrochromic device provided by an embodiment of the present application comprises: a diaphragm 100, an attaching assembly 200, and a lead-out piece 300, the attaching assembly is arranged at the edge area of the diaphragm; the attaching assembly 200 comprises: a first attaching member (see Figure 2 the first busbar 210 shown in or Figure 2 the first waterproof adhesive 230 shown in or Figure 2 the second busbar 220 shown in orFigure 2 The first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) are respectively attached to the four peripheral edge regions of the film sheet 100, and the end portions of the first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) close to each other are stacked on each other, thereby forming the lapping portion 201. The lead-out member 300 is electrically connected to the film sheet 100, and can be directly connected to the bus bar of the film sheet or connected to the electrode 101 of the film sheet 100. The projection of the lead-out member 300 on the plane of the film sheet 100 is arranged in a staggered manner with the projection of the lapping portion 201 on the plane of the film sheet 100.

[0033] The lead-out member 300 can be a flexible printed circuit (FPC) or other conductive device, and is used to connect the electrode 101 in the film sheet 100. It is worth noting that the staggered arrangement in the embodiments of the present application means that the projections of the first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) on the plane of the film sheet 100 are completely staggered and do not overlap each other. It is worth noting that the lapping in the embodiments of the present application can be direct contact to form the lapping portion 201, or the end portions of the first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) close to each other can be partially overlapped in the projection on the plane of the electrochromic film sheet, and the first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) are stacked in the three-dimensional space to form the lapping portion 201. For example, the first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) are respectively arranged on the opposite two outer surfaces of the film sheet 100. The projections of the first and second attaching members (the first bus bar 210 or the first waterproof adhesive 230 and the second bus bar 220 or the second waterproof adhesive 240) on the plane of the film sheet 100 are partially overlapped, and the overlapped part of the first and second attaching members corresponds to the lapping portion formed by the film sheet and the first and second attaching members.

[0034] Specifically, the first attached accessory (the first bus bar 210 or the first waterproof adhesive 230) and the second attached accessory (the second bus bar 220 or the second waterproof adhesive 240) are attached by using the same material, which can be at least one of a copper foil, a high-temperature adhesive, or a waterproof adhesive. The first attached accessory (the first bus bar 210 or the first waterproof adhesive 230) and the second attached accessory (the second bus bar 220 or the second waterproof adhesive 240) are overlapped to form the overlapping portion 201, avoiding the position of the lead-out piece 300, so as to avoid the overlapping of the overlapping portion 201 and the lead-out piece 300, and thus the thickness of the area corresponding to the overlapping of the two is much larger than the thickness of the diaphragm itself, which is beneficial to reduce the overall thickness difference of the diaphragm, and thus reduce the risk of diaphragm cracking during the lamination process. It can be understood that, according to the general knowledge in the art, the difference between the thickness of the diaphragm itself and the thickness of the lead-out piece is generally controlled within a certain range, and it is appropriate that no diaphragm cracking occurs when the diaphragm is laminated with the transparent substrate, which will not be described here.

[0035] In other embodiments, the first attached accessory (the first bus bar 210 or the first waterproof adhesive 230) and the second attached accessory (the second bus bar 220 or the second waterproof adhesive 240) can be made of different materials, such as the first attached accessory being a bus bar and the second attached accessory being a waterproof adhesive, which is not limited in the present application.

[0036] In some embodiments of the present application, the first attached accessory can be the first bus bar 210, and the second attached accessory can be the second bus bar 220. Part of the first bus bar 210 and part of the second bus bar 220 are overlapped to form the overlapping portion 201.

[0037] The first bus bar 210 and the second bus bar 220 are arranged at the edge region of the electrochromic diaphragm 100 and extend along the edge of the electrochromic diaphragm 100. The diaphragm 100 includes a first conductive layer, a color-changing layer, and a second conductive layer arranged in sequence. The surface of the first conductive layer and / or the second conductive layer is provided with the first bus bar 210 and the second bus bar 220, and the overlapping portion 201 can be formed by the overlapping of the first bus bar 210 and the second bus bar 220. The first bus bar 210 and the second bus bar 220 are both made of metal materials such as copper foil and silver. In some preferred embodiments, the attached assembly 200 extends along the entire edge region of the electrochromic diaphragm and completely covers the entire edge of the electrochromic region, thereby accelerating the transmission speed of the current. In the embodiments of the present application, a third bus bar and a fourth bus bar can also be included. Each bus bar is arranged in sequence and end-to-end at the entire edge region of the electrochromic diaphragm. The end-to-end overlapping portion of each bus bar forms the overlapping portion 201.

[0038] In other embodiments, the first attached accessory can be the first waterproof adhesive 230, and the second attached accessory can be the second waterproof adhesive 240. Part of the first waterproof adhesive 230 and part of the second waterproof adhesive 240 are overlapped to form the overlapping portion 201.

[0039] In another optional embodiment, the first and second attachments can be an assembly formed by waterproof adhesive covering the busbar. Specifically, the first waterproof adhesive 230 can be used to cover the first busbar 210, and the second waterproof adhesive 240 can be used to cover the second busbar 220. The first busbar 210 and the second busbar 220 overlap to form an overlap 201, and the first waterproof adhesive 230 and the second waterproof adhesive 240 overlap to form another overlap 201.

[0040] like Figure 2 As shown, when the attachment component 200 has multiple overlapping portions 201, the projections of each overlapping portion 201 on the plane where the film 100 is located are staggered, thereby avoiding the stacking of two or more overlapping portions 201, which would cause the thickness of the product to increase in a certain local area, and thus improve the uniformity of the product thickness.

[0041] like Figure 3 As shown, in another embodiment of the electrochromic device provided by this utility model, the diaphragm 100 is provided with a plurality of spaced electrodes 101, and a groove 102 is provided between two adjacent electrodes 101; at least one of the overlapping portions 201 is projected onto the plane of the diaphragm 100 within the projection of the groove 102 onto the plane of the diaphragm, that is, between the projections of two adjacent electrodes 101 onto the plane of the diaphragm, the groove 102 accommodates the overlapping portion 201. In this embodiment, the groove 102 penetrates the entire electrochromic diaphragm 100, thereby indirectly accommodating a portion of the thickness of the overlapping portion. By providing the groove 102, the thickness of the diaphragm 100 at the groove 102 is smaller than the thickness of the diaphragm 100 at the electrodes 101, thereby reducing the product thickness at the location of the overlapping portion 201 and further improving the uniformity of the overall diaphragm thickness. It is worth noting that the first and second attachments cover the groove 102 of the diaphragm 100, and part of the first attachment and / or the first attachment fills the groove 102, thus filling and covering the groove 102 of the diaphragm 100, thereby sealing the edge area of ​​the entire electrochromic device diaphragm 100.

[0042] It is worth noting that in some embodiments, the diaphragm 100 is provided with multiple attachment components 200, that is, it has multiple overlaps 201, each overlap 201 corresponding to the same groove. In some preferred embodiments, each overlap corresponds to a different groove, thereby improving the uniformity of the overall diaphragm thickness.

[0043] In another embodiment of the electrochromic device provided by this utility model, such as Figure 4As shown, the film 100 is configured with a plurality of spaced-apart electrodes 101, and the overlap portion 201 is electrically connected to one of the electrodes 101 and overlaps the electrode 101 in the projection of the film 100. Alternatively, one overlap portion 201 is provided for one electrode 101.

[0044] Generally, the width of the groove 102 between two adjacent electrodes 101, i.e. the length of the groove 102 extending along the edge of the electrochromic film 100, is 4 mm. If the overlap portion 201 is arranged in the groove 102, the overlap length will be limited by the size of the groove 102. In particular, when the first and second attachment members are bus bars, i.e. for conducting electricity, if the overlap length of the overlap portion is small, the bus bars are prone to fall off and cause a break. In order to avoid a break between the two attachment members, the overlap length is required to be large, generally more than 20 mm. Since the size of the electrode 101 is larger than that of the groove 102, and the larger the electrode 101, the faster the color change of the film 100, the length of the electrode 101, i.e. the length extending along the edge of the film, is generally 80 mm. Therefore, the position of the electrode 101 can provide the required overlap length of the overlap portion 201. Therefore, for such a case requiring a large overlap length, the projection of the overlap portion 201 in the plane of the film 100 overlaps one of the electrodes 101, so as to avoid the break of the overlap portion formed by the two bus bars and effectively improve the efficiency of the electrical conduction of the electrochromic film.

[0045] In some preferred embodiments, the electrochromic film comprises a first substrate, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate arranged in sequence. A plurality of first electrode grooves and second electrode grooves are arranged in the edge region of the film. The first electrode grooves extend from the surface of the second substrate of the film to the surface of the first conductive layer, exposing the first conductive layer to form first electrodes. The second electrode grooves extend from the surface of the first substrate of the film to the surface of the second conductive layer, exposing the second conductive layer to form second electrodes. Since the electrode grooves are arranged to form electrodes, the thickness of the film at the positions corresponding to the electrodes is smaller than that of other regions. Therefore, the overlap portion is arranged at the electrodes to reduce the thickness difference of the entire film. The first bus bar and the second bus bar extend along the surface of the first conductive layer and are connected to each first electrode, and the overlap portion of the first bus bar and the second bus bar is in contact with the first electrode. The first bus bar and the second bus bar can also extend along the surface of the second conductive layer and be connected to each second electrode, and the overlap portion 201 of the second bus bar and the first bus bar is in contact with the second electrode.

[0046] In addition, the projection of the lead-out piece 300 on the plane of the film 100 overlaps the other electrode 101, in other words, the lead-out piece 300 and the lapping part 201 are respectively arranged on different electrodes 101, on the one hand, to avoid the thickness increase caused by the overlap of the lead-out piece 300 and the lapping part 201, and on the other hand, if the lead-out structure is directly arranged on the same electrode, the current of the electrode corresponding to the lead-out structure is larger, and the resistance of the lapping part 201 relative to other parts is smaller, and the corresponding current is also larger; if the lead-out structure and the lapping part are directly arranged on the same electrode, it will cause the current of the same electrode to be larger, which is easy to cause damage to the electrode. In addition, not setting the lead-out piece 300 can also ensure that the entire electrode has enough space to accommodate the lapping part 201, so that the area where the lapping part 201 is located can meet the lapping length requirement.

[0047] In some embodiments of the present application, one end of the lead-out piece 300 is bonded to the first bus bar or the second bus bar through ACF (Anisotropic Conductive Film), and the lead-out piece 300 does not overlap the lapping part, that is, the lead-out piece 300 is connected to only one of the bus bars. The other end of the lead-out piece 300 is used for electrical connection with an external power supply.

[0048] Further, the edge region of the electrochromic film includes a straight edge portion and a curved corner portion, and the first and second adhesive members are arranged along the edge position of the entire film. The lapping part 201 is located at the straight edge portion of the film 100. When the first and second adhesive members are bus bars such as copper foils, the ductility of the metal such as copper foil is used to overcome the wrinkles generated at the corners when the first and second adhesive members are attached at the corners, so that the bus bar at the corner has a large internal stress due to the ductility. If the lapping part 201 is arranged at the corner of the film 100, the large stress is easy to pull off the first and second adhesive members and cause the lapping failure of the first and second adhesive members. Therefore, the lapping part is arranged at the straight edge portion, and the lapping part formed by the bus bar is preferably arranged at the straight edge portion of the film 100, so that the lapping of the entire film is more stable and not easy to fall off.

[0049] In a more preferred embodiment, as shown in FIG. 6, the lead-out piece 300 is arranged on the same electrode 101 as the lapping part 201, and the lead-out piece 300 and the lapping part 201 are arranged on the same electrode 101. In this way, the thickness of the electrode 101 is reduced, and the current of the electrode 101 is also reduced. Figure 4The diaphragm 100 is provided with a plurality of spaced electrodes 101 on the circumferential edge, and a groove 102 is formed between two adjacent electrodes 101; the lap joint part 201 includes a bus bar lap joint part 2011 formed by bus bar lap joint and a glue lap joint part 2012 formed by waterproof glue lap joint; the projection of the bus bar lap joint part 2011 on the plane of the diaphragm 100 is located within the projection of the electrode 101 on the plane of the diaphragm 100, so as to ensure the lap joint length of the bus bar lap joint part 2011; the projection of the glue lap joint part 2012 on the plane of the diaphragm 100 is located within the projection of the groove 102 on the plane of the diaphragm, i.e. between the projections of two adjacent electrodes 101 on the plane of the diaphragm 100, and the groove 102 is used to accommodate the glue lap joint part 2012, thereby reducing the thickness dimension of the product.

[0050] Further, the diaphragm 100 includes a first conductive layer, an electrochromic layer and a second conductive layer which are sequentially stacked, the first conductive layer and the second conductive layer are respectively connected with the lead-out piece 300, and the two lead-out pieces are respectively electrically connected with the positive and negative poles of the power supply. The first conductive layer and the second conductive layer are respectively attached with the attaching assembly 200, and the lap joint manner of the first conductive layer and the second conductive layer respectively attached with the attaching assembly 200 can adopt any one of the above lap joint manners.

[0051] In a more preferred embodiment, the projections of the lead-out pieces 300 located on the first conductive layer and the lead-out pieces 300 located on the second conductive layer on the plane of the diaphragm 100 are arranged in a staggered manner, the projections of the lead-out pieces 300 and the lap joint part 201 in the attaching assembly 200 on the plane of the diaphragm 100 are arranged in a staggered manner, and the projections of the lead-out pieces 300 of the first conductive layer and the lap joint part of the attaching assembly 200 respectively attached with the second conductive layer on the plane of the diaphragm 100 are arranged in a staggered manner, thereby reducing the product thickness difference and reducing the risk of diaphragm cracking during lamination.

[0052] In another aspect, the application provides an electrochromic device, which includes a first substrate layer and a second substrate layer and the electrochromic device described in any one of the above aspects, and the electrochromic device is sandwiched between the first substrate layer and the second substrate layer. The first substrate layer or the second substrate layer is fixed with the electrochromic device by an adhesive layer, such as PVB (Polyvinyl Butyral) or the like. In some preferred embodiments, the substrate layer is made of glass or organic glass or the like transparent material.

[0053] The electrochromic device is laminated by the electrochromic device described above and the first substrate layer and the second substrate layer. Since the electrochromic device described above is used, all the advantages of the electrochromic device described above are achieved, and the risk of substrate cracking during lamination is reduced.

[0054] In some preferred embodiments, the edge region of the substrate layer of the electrochromic device is provided with a shielding layer, the shielding layer is provided corresponding to the attaching assembly 200, that is to say, the projection of the attaching assembly 200 in the plane of the electrochromic film is within the projection of the shielding layer in the plane of the electrochromic film.

[0055] The terminal device provided by the embodiment of the utility model further comprises the electrochromic device of any one of the above-mentioned embodiments, or the terminal device comprises any one of a rearview mirror, a curtain wall, an automobile sunroof, an automobile side window, an automobile windshield, an electronic product shell, glasses, a vehicle and a display panel, and the terminal device has all the technical advantages of the electrochromic device, and thus will not be described here.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above-mentioned embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An electrochromic device comprising a film, an attaching assembly and a lead-out piece, the attaching assembly being arranged at an edge region of the film; characterized in that, the attaching assembly comprises a first attaching member and a second attaching member, the first attaching member and the second attaching member are respectively attached to the film, and the first attaching member and the second attaching member are overlapped to form at least one overlapping portion; the lead-out piece is connected to the film, and a projection of the lead-out piece on a plane in which the film is located is arranged in a dislocation manner with a projection of the at least one overlapping portion on the plane in which the film is located.

2. The electrochromic device of claim 1, wherein, The first attaching member and the second attaching member are bus bars or waterproof glue, or a combination formed by waterproof glue covering bus bars.

3. The electrochromic device of claim 1, wherein, The attaching assembly has a plurality of overlapping portions, and projections of the plurality of overlapping portions on the plane in which the film is located are arranged in a dislocation manner.

4. The electrochromic device of claim 1, wherein, The film is configured with a plurality of spaced-apart electrodes, and a groove is formed between two adjacent electrodes; a projection of the at least one overlapping portion on the plane in which the film is located is located within a projection of the groove on the plane in which the film is located.

5. The electrochromic device of claim 1, wherein, The film is configured with a plurality of spaced-apart electrodes, the overlapping portion is electrically connected to the electrodes, and a projection of the overlapping portion on the plane in which the film is located overlaps one of the electrodes.

6. The electrochromic device of claim 5, wherein, The projection of the lead-out piece on the plane in which the film is located overlaps another electrode.

7. The electrochromic device of claim 1, wherein, The first attaching member and the second attaching member are respectively arranged at opposite surfaces of the film, and cooperate with the film to form at least one overlapping portion.

8. The electrochromic device of claim 1, wherein, The film is configured with a plurality of spaced-apart electrodes, and a groove is formed between two adjacent electrodes; The overlapping portion comprises a bus bar overlapping portion formed by overlapping bus bars, and a glue overlapping portion formed by overlapping waterproof glue; a projection of the bus bar overlapping portion on the plane in which the film is located is located within a projection of the electrode on the plane in which the film is located, and a projection of the glue overlapping portion on the plane in which the film is located is located within the groove.

9. An electrochromic device, characterized in that, The electrochromic device as claimed in any one of claims 1-8 is sandwiched between the first substrate layer and the second substrate layer.

10. A terminal device, comprising: The terminal device as claimed in any one of claims 1-8 comprises any one of a rearview mirror, a curtain wall, an automobile sunroof, an automobile side window, an automobile windshield, an electronic product shell, glasses, a vehicle, and a display panel.

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