Electrochromic device, electrochromic device and terminal product

Abstract

The utility model belongs to the technical field of electrochromism, and particularly discloses an electrochromism device, an electrochromism device and a terminal product. The electrochromic device comprises a first conducting layer, a second conducting layer, a third conducting layer and a fourth conducting layer, the first conducting layer is provided with a first bus bar, and the first bus bar is electrically connected with the first conducting layer; an electrochromic layer group; a second conductive layer including a central portion; the second conductive layer is provided with a second bus bar, the second bus bar comprises a conductive section and a connecting section electrically connected with the conductive section, and the conductive section is electrically connected with the central part; the connecting section extends from the conductive section to the first bus bar; the second conductive layer is further provided with an insulation structure formed between the second conductive layer and the connecting section, and the insulation structure is used for preventing current from being conducted to the central part from the connecting section. The technical problem that in the prior art, an electrochromic device needs more space for arranging a flexible circuit board can be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electrochromic technology, and particularly relates to an electrochromic device, an electrochromic apparatus and a terminal product. BACKGROUND

[0002] Two bus bars of the electrochromic device need to be connected with the positive and negative poles of an external power supply respectively, and the electrochromic device changes color after the power supply is turned on. The bus bars are generally connected with the external power supply through a flexible circuit board. Since the electrochromic device has a faster color change speed in the area where the bus bars are arranged, two bus bars need to be arranged at a certain distance apart so as to make the color change process of the entire device more uniform, but this means that the flexible circuit boards need to be arranged at a distance apart, which requires more space to arrange the flexible circuit boards, and thus there is a problem of position arrangement of the flexible circuit boards. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiments of the present application is to provide an electrochromic device, an electrochromic apparatus and a terminal product to solve the technical problem that the electrochromic device needs more space to arrange the flexible circuit boards in the prior art.

[0004] To achieve the above-mentioned purpose, a first aspect of the embodiments of the present application provides an electrochromic device, comprising: a first conductive layer, a first bus bar being arranged on the first conductive layer, and the first bus bar being electrically connected with the first conductive layer; an electrochromic layer group, arranged on one side of the first conductive layer; a second conductive layer, arranged on a side of the electrochromic layer group away from the first conductive layer, and the second conductive layer comprising a center part and an edge part; a second bus bar arranged on the edge part, the second bus bar comprising a conductive segment and a connecting segment electrically connected with the conductive segment, and the conductive segment being electrically connected with the center part; a projection of the first bus bar on a plane where the first conductive layer is located being arranged at a distance apart from a projection of the conductive segment on the plane where the first conductive layer is located; the connecting segment extending from the conductive segment to the first bus bar; and an insulating structure further arranged on the second conductive layer, and the insulating structure being used to hinder the conduction of current from the connecting segment to the center part.

[0005] In some embodiments, the electrochromic device further comprises a first lead-out structure and a second lead-out structure, the first lead-out structure being electrically connected with the first bus bar, and the first lead-out structure extending from the first bus bar to outside the first conductive layer; the second lead-out structure being electrically connected with the connecting segment, and the second lead-out structure extending from the connecting segment to outside the second conductive layer; and the first lead-out structure and the second lead-out structure being located on the same side edge of the electrochromic device.

[0006] In some embodiments, one of the side edges of the electrochromic device is provided with a notch, and the notch penetrates through the first conductive layer, the electrochromic layer group and the second conductive layer; at least part of the first lead-out structure is arranged in the notch, and at least part of the second lead-out structure is arranged in the notch.

[0007] In some embodiments, the projection of the connecting segment on the plane where the first conductive layer is located partially overlaps with the projection of the first bus bar on the plane where the first conductive layer is located; or, the projection of the connecting segment on the plane where the first conductive layer is located and the projection of the first bus bar on the plane where the first conductive layer is located are spaced apart.

[0008] In some embodiments, the insulating structure includes a first insulating layer disposed between the connecting segment and the second conductive layer.

[0009] In some embodiments, the insulating structure includes a first isolation space disposed between the connecting segment and the second conductive layer, and the first isolation space is used to separate the connecting segment and the second conductive layer.

[0010] In some embodiments, the insulating structure includes a second partition space disposed between the central portion and the edge portion, the second partition space being used to separate the central portion from the edge portion corresponding to the connecting segment.

[0011] In some embodiments, the electrochromic device further includes a second insulating layer; the second insulating layer is disposed between the first bus bar and the electrochromic layer group; and / or the second insulating layer is disposed between the second bus bar and the electrochromic layer group.

[0012] An embodiment of the second aspect of the present application provides an electrochromic device, comprising a substrate layer and the electrochromic device of any one of the embodiments of the first aspect; the substrate layer is located on the side of the second conductive layer facing away from the first conductive layer; and / or the substrate layer is located on the side of the first conductive layer facing away from the second conductive layer.

[0013] An embodiment of the third aspect of the present application provides a terminal product, comprising the electrochromic device of any one of the embodiments of the first aspect or the electrochromic device of the embodiment of the second aspect, the terminal product comprising any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, an electronic product housing, glasses, a vehicle, and a display panel.

[0014] The beneficial effects of the electrochromic device, electrochromic apparatus and terminal product provided by the present application are that: the conductive segments of the first bus bar and the second bus bar are respectively on the two conductive layers of the electrochromic device and are arranged at intervals. Since a connecting segment is provided and the connecting segment is extended toward the first bus bar, the extended connecting segment can be used to set the lead-out structure, and the position of the first bus bar close to the connecting segment can also be used to connect another lead-out structure. That is to say, by providing the connecting segment, the two lead-out structures can be centrally provided, thereby reducing the side position of the electrochromic device occupied by the lead-out structure, and can reduce the space occupied by the two flexible circuit boards on the surrounding side of the electrochromic device; the embodiments of the present application can solve the technical problem that the electrochromic device requires more space to set the flexible circuit board.

[0015] In addition, the insulation structure can prevent the current from directly conducting to the center part of the second conductive layer when passing through the connecting section, but make the current pass through the connecting section to the conductive section and then pass to the center part of the second conductive layer, and the current spreads from between the first bus bar and the conductive section, so that the electrochromic layer group is uniformly discolored between the areas corresponding to the first bus bar and the conductive section. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 1 ;

[0018] Figure 2 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 1 ;

[0019] Figure 3 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 1 ;

[0020] Figure 4 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 2 ;

[0021] Figure 5 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 4 ;

[0022] Figure 6 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 4 ;

[0023] Figure 7 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 3 ;

[0024] Figure 8 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 7 ;

[0025] Figure 9 Structure diagram of the electrochromic device provided by some embodiments of the present application Figure 7 ;

[0026] Figure 10 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 1 ;

[0027] Figure 11 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 2 ;

[0028] Figure 12 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 3 ;

[0029] Figure 13 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 4 ;

[0030] Figure 14 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 5 ;

[0031] Figure 15 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 6 ;

[0032] Figure 16 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application Figure 7 ;

[0033] Figure 17 Schematic diagram of the cross-sectional structure of the electrochromic device provided in some embodiments of the present application.

[0034] Among them, the reference numerals in the figures are:

[0035] 1000. Electrochromic device;

[0036] 100, electrochromic device; 101, first side; 102, second side; 103, notch;

[0037] 10. a first conductive layer;

[0038] 20. Second conductive layer; 21. Center portion; 22. Edge portion;

[0039] 30. First bus bar;

[0040] 40. Second bus bar; 41. Conductive segment; 42. Connecting segment;

[0041] 50. Electrochromic layer group; 51. Electrochromic layer; 52. Electrolyte layer; 53. Ion storage layer;

[0042] 60. Insulation structure; 61. First insulation layer; 62. First partition space; 63. Second partition space;

[0043] 70. Second insulating layer;

[0044] 80. First lead structure;

[0045] 90. Second lead structure;

[0046] 200. Base material layer. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0048] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0051] The embodiments of the present application provide an electrochromic device, an electrochromic apparatus, and a terminal product, which can play the role of dimming and shading in products such as glasses and windows.

[0052] The embodiment of the first aspect of the present application provides an electrochromic device, please refer to Figures 1 to 4From the perspective of the plane where the electrochromic device 100 is located, the electrochromic device 100 includes a central portion and an edge portion. The central portion is the visible area, and the edge portion is used to arrange the busbars. Figure 10 As shown, the electrochromic device 100 includes a first conductive layer 10, an electrochromic layer group 50, and a second conductive layer 20 stacked in sequence. The central portion of the electrochromic device 100 includes the central portion of the first conductive layer 10, the central portion of the electrochromic layer group 50, and the central portion 21 of the second conductive layer 20; the edge portion of the electrochromic device 100 includes the edge portion of the first conductive layer 10, the edge portion of the electrochromic layer group 50, and the edge portion 22 of the second conductive layer 20. A first bus bar 30 is provided on the first conductive layer 10. The first bus bar 30 is disposed at the edge portion of the first conductive layer 10, and the first bus bar 30 extends along the edge portion of the first conductive layer 10. The first bus bar 30 is electrically connected to the first conductive layer 10; the electrochromic layer group 50 is disposed on one side of the first conductive layer 10; and the second conductive layer 20 is disposed on the side of the electrochromic layer group 50 facing away from the first conductive layer 10. Please refer to Figure 3 and Figure 6 The second conductive layer 20 includes a central portion 21 and an edge portion 22. The dotted lines in the figure are provided for reference to facilitate understanding, and the dotted lines do not limit the boundaries between the central portion 21 and the edge portion 22 of the second conductive layer 20. A second bus bar 40 is provided on the edge portion 22 of the second conductive layer 20. The second bus bar 40 includes a conductive segment 41 and a connecting segment 42 electrically connected to the conductive segment 41. The conductive segment 41 is electrically connected to the central portion 21 of the second conductive layer 20.

[0053] The projection of the first bus bar 30 on the plane of the first conductive layer 10 is arranged at an interval with the projection of the conductive segment 41 on the plane of the first conductive layer 10; the connecting segment 42 extends from the conductive segment 41 toward the first bus bar 30 and extends to a position on the second conductive layer 20 close to the first bus bar 30; an insulating structure 60 is also provided on the second conductive layer 20, and the insulating structure 60 is used to prevent current from being conducted from the connecting segment 42 to the central portion 21 of the second conductive layer 20.

[0054] Optionally, the electrochromic device 100 further includes a first substrate layer and a second substrate layer, the first conductive layer 10 is disposed on the first substrate layer, and the second conductive layer 20 is disposed on the second substrate layer, and the first substrate layer and the second substrate layer are flexible substrates. Exemplarily, the first substrate layer and the second substrate layer can be polyethylene terephthalate (PET) material.

[0055] The first conductive layer 10 includes a light-transmitting conductive material. Optionally, the first conductive layer 10 may include a conductive material such as indium tin oxide (ITO), which can form a current path and has good light transmittance.

[0056] The first busbar 30 comprises a conductive material. The first busbar 30 is disposed on the first conductive layer 10 and is directly electrically connected to the first conductive layer 10. The first busbar 30 is used to electrically connect the first conductive layer 10 to an external power source and can conduct external current directly to the first conductive layer 10. Optionally, the first busbar 30 can be made of a conductive material such as copper foil, silver wire, or conductive ink to provide good electrical conductivity. The first busbar 30 can also be screen-printed on the first conductive layer 10 for strong adhesion.

[0057] The electrochromic layer group 50 is light-transmissive and can undergo a coloring reaction under the action of an electric field. The electrochromic layer group 50 can fade after the electric field is removed or a reverse voltage is applied.

[0058] The second conductive layer 20 is disposed on a side of the electrochromic layer group 50 away from the first conductive layer 10 , that is, the first conductive layer 10 , the electrochromic layer group 50 and the second conductive layer 20 are stacked in sequence.

[0059] The second conductive layer 20 includes a light-transmitting conductive material. Optionally, the second conductive layer 20 may include a conductive material such as indium tin oxide (ITO), which can form a current path and has good light transmittance. The central portion 21 of the second conductive layer 20 is a region through which light can pass. In the thickness direction of the electrochromic device 100, light can pass from one side of the electrochromic device 100 through the central portion of the electrochromic device 100 to the other side.

[0060] The second busbar 40 comprises a conductive material and is used to electrically connect the second conductive layer 20 to an external power source. Alternatively, the second busbar 40 can be made of a conductive material such as copper foil, silver wire, or conductive ink, providing excellent electrical conductivity. The second busbar 40 can be screen-printed onto the second conductive layer 20 for enhanced adhesion.

[0061] The conductive segment 41 is electrically connected to the central portion 21 of the second conductive layer 20 , that is, the edge portion 22 of the second conductive layer 20 corresponding to the conductive segment 41 is connected to the central portion 21 of the second conductive layer 20 , and current can be directly conducted to the central portion 21 .

[0062] The projection of the first bus bar 30 on the plane where the first conductive layer 10 is located is spaced apart from the projection of the conductive segment 41 on the plane where the first conductive layer 10 is located. That is, the first bus bar 30 and the conductive segment 41 are not adjacent to each other.

[0063] The connecting section 42 extends from the conductive section 41 toward the first bus bar 30 and extends to a position on the second conductive layer 20 close to the first bus bar 30. That is, the orthographic projection of the connecting section 42 on the plane where the first conductive layer 10 is located and the orthographic projection of the first bus bar 30 on the plane where the first conductive layer 10 is located partially overlap or are arranged adjacent to each other. When the flexible circuit board is connected to the first bus bar 30 and the connecting section 42, the orthographic projections of the two flexible circuit boards on the plane where the first conductive layer 10 is located can overlap, which can reduce the space occupied by the two flexible circuit boards on the peripheral side of the electrochromic device 100.

[0064] The insulating structure 60 can be an insulating layer or a spatial structure. The insulating structure 60 is used to prevent the current from being directly conducted from the connecting segment 42 to the central portion 21 of the second conductive layer 20, so that the current is conducted to the central portion 21 of the second conductive layer 20 through the connecting segment 42 and the conductive segment 41.

[0065] When in use, the connecting section 42 is connected to the electrode of an external power source, so that the power source transmits current to the conductive section 41. The first bus bar 30 and the conductive section 41 can transmit current to the first conductive layer 10 and the second conductive layer 20, so that an electric field is formed between the first conductive layer 10 and the second conductive layer 20; the electrochromic layer group 50 reacts under the action of the electric field and changes color.

[0066] The beneficial effects of the embodiments of the present application are that the conductive segments 41 of the first bus bar 30 and the second bus bar 40 are respectively on the two conductive layers of the electrochromic device 100 and are arranged at intervals. Since a connecting segment 42 is provided and the connecting segment 42 is extended toward the first bus bar 30, the extended connecting segment 42 can be used to set the lead-out structure, and the position of the first bus bar 30 close to the connecting segment 42 can also be used to connect another lead-out structure. That is to say, by providing the connecting segment 42, the two lead-out structures can be centrally provided, thereby reducing the side position of the electrochromic device 100 occupied by the lead-out structure, and can reduce the space occupied by the two flexible circuit boards on the peripheral side of the electrochromic device 100; the embodiments of the present application can solve the technical problem that the electrochromic device 100 requires more space to set the flexible circuit board.

[0067] In addition, the connecting section 42 extends to a position adjacent to the first bus bar 30. When a flexible circuit board is connected to the first bus bar 30 and the connecting section 42, the two flexible circuit boards can be arranged close to each other, and the orthographic projection of the position where one flexible circuit board is connected to the first bus bar 30 on the plane where the first conductive layer 10 is located and the orthographic projection of the position where the other flexible circuit board is connected to the connecting section 42 on the plane where the first conductive layer 10 is located partially overlap or are arranged adjacent to each other, which can make the orthographic projections of the two flexible circuit boards on the plane where the first conductive layer 10 is located overlap, and can reduce the space occupied by the two flexible circuit boards on the peripheral side of the electrochromic device 100.

[0068] The insulating structure 60 can prevent the current from being directly conducted to the central portion 21 of the second conductive layer 20 when passing through the connecting segment 42. The current is conducted to the conductive segment 41 through the connecting segment 42 and then to the central portion 21 of the second conductive layer 20. The current spreads between the first bus bar 30 and the conductive segment 41, causing the electrochromic layer group 50 to change color uniformly between the areas corresponding to the first bus bar 30 and the conductive segment 41; and prevents the current from being directly conducted from the connecting segment 42 to the area on the second conductive layer 20 adjacent to the first bus bar 30, preventing the electrochromic layer group 50 from starting to change color from the area adjacent to the connecting segment 42 and the first bus bar 30.

[0069] In some embodiments, the electrochromic layer group 50 includes an electrochromic layer 51, an electrolyte layer 52, and an ion storage layer 53, which are stacked in sequence. One of the electrochromic layer 51 and the ion storage layer 53 is disposed on a side of the electrochromic layer group 50 close to the first conductive layer 10, and the other is disposed on a side of the electrochromic layer group 50 close to the second conductive layer 20. Under the action of an electric field, ions can be transferred between the electrochromic layer 51 and the ion storage layer 53, causing the electrochromic layer 51 to react and change color.

[0070] In some embodiments, please refer to Figures 1 to 6 The electrochromic device 100 further includes a first lead-out structure 80 and a second lead-out structure 90. The first lead-out structure 80 is electrically connected to the first bus bar 30 and extends from the first bus bar 30 to the outside of the first conductive layer 10. The second lead-out structure 90 is electrically connected to the connecting section 42 and extends from the connecting section 42 to the outside of the second conductive layer 20. The first lead-out structure 80 and the second lead-out structure 90 are located on the same side of the electrochromic device 100. The side of the electrochromic device 100 is located at the edge of the electrochromic device 100, and the side of the electrochromic device 100 includes the side of the first conductive layer 10 and the side of the second conductive layer 20.

[0071] The first lead-out structure 80 can be a flexible printed circuit (FPC). The portion of the first lead-out structure 80 located outside the first conductive layer 10 is connected to an external power source, capable of transmitting external current to the first bus bar 30. The first lead-out structure 80 can extend from the end of the first bus bar 30 along the length direction to the outside of the first conductive layer 10, or the first lead-out structure 80 can extend from a position between the two ends of the first bus bar 30 along the length direction to the outside of the first conductive layer 10. In other words, the first lead-out structure 80 can be attached to the end of the first bus bar 30 or to the middle of the first bus bar 30.

[0072] Optionally, on the plane where the electrochromic layer group 50 is located, the orthographic projection of the first lead structure 80 may extend in the direction of the spacing between the orthographic projection of the first bus bar 30 and the orthographic projection of the conductive segment 41; the orthographic projection of the first lead structure 80 may also extend in a direction perpendicular to the spacing between the orthographic projection of the first bus bar 30 and the orthographic projection of the conductive segment 41. For example, the first bus bar 30 and the conductive segment 41 are respectively located parallel to two side edges of the electrochromic device 100, and the first lead structure 80 may extend along the length direction of the first bus bar 30 or in a direction perpendicular to the length direction of the first bus bar 30.

[0073] Optionally, on the plane where the electrochromic layer group 50 is located, the orthographic projection of the first lead structure 80 extends from the orthographic projection of the first bus bar 30 in a direction away from the orthographic projection of the conductive segment 41, so as to avoid the electrochromic layer group 50 starting to change color from the area adjacent to the first lead structure 80 and the conductive segment 41.

[0074] The second lead structure 90 can be a flexible printed circuit (FPC) capable of transmitting external current to the connecting section 42. Optionally, the second lead structure 90 and the first lead structure 80 are arranged close to each other. This close arrangement can be understood as concentrating the two adjacent flexible printed circuits on the same side of the electrochromic device 100, outside the first conductive layer 10 and the second conductive layer 20, thereby reducing the space occupied by the electrochromic device 100.

[0075] The beneficial effect of the embodiment of the present application is that the first lead-out structure 80 and the second lead-out structure 90 can be connected to the power supply outside the first conductive layer 10 and the second conductive layer 20, thereby facilitating the conduction of the current of the external power supply to the first bus bar 30 and the second bus bar 40.

[0076] In some embodiments, please refer to Figures 1 to 6 The electrochromic device 100 has two first side edges 101 and two second side edges 102 that are opposite to each other. The first side edges 101 and the second side edges 102 are spaced apart from each other and the two adjacent side edges are connected end to end. The length of the first side edge 101 is greater than the length of the second side edge 102. The first lead-out structure 80 and the second lead-out structure 90 are located on the same first side edge 101.

[0077] The first side 101 and the second side 102 are located at the edge of the electrochromic device 100. The first side 101 and the second side 102 are spaced apart from each other and the two adjacent side edges are connected end to end to form the peripheral side of the electrochromic device 100, that is, to form the outline of the electrochromic device 100.

[0078] The ends of the first side 101 are respectively connected to the ends of the two second sides 102. The length of the first side 101 is greater than the length of the second side 102. In other words, the first lead structure 80 and the second lead structure 90 are located on the longer side of the electrochromic device 100. The length of the side of the electrochromic device 100 refers to the length of the projection of the side of the electrochromic device 100 on the plane where the electrochromic layer group 50 is located.

[0079] The beneficial effect of the embodiments of the present application is that the first lead-out structure 80 and the second lead-out structure 90 are led out from the longer side of the electrochromic device 100, allowing the flexible circuit board to be connected to the longer side of the electrochromic device 100, thereby fully utilizing the space on the longer side of the electrochromic device 100. When the electrochromic device 100 is used in lenses such as ski goggles and cycling goggles, because the upper and lower sides of the glasses are larger than the left and right sides, and the left and right sides of the glasses are usually connected to other components such as glasses strings, connecting the first lead-out structure 80 and the second lead-out structure 90 to the upper or lower side of the glasses can improve space utilization.

[0080] In some embodiments, please refer to Figures 7 to 9 A notch 103 is provided on one side of the electrochromic device 100 , and the notch 103 passes through the first conductive layer 10 , the electrochromic layer group 50 , and the second conductive layer 20 ; at least a portion of the first lead-out structure 80 is provided in the notch 103 , and at least a portion of the second lead-out structure 90 is provided in the notch 103 .

[0081] A notch 103 is provided on one side of the electrochromic device 100 , that is, the notch 103 extends from one side of the electrochromic device 100 into the electrochromic device 100 .

[0082] The gap 103 penetrates the first conductive layer 10 , the electrochromic layer group 50 and the second conductive layer 20 , that is, the gap 103 penetrates the electrochromic device 100 along the arrangement direction of the first conductive layer 10 and the second conductive layer 20 .

[0083] At least a portion of the first lead-out structure 80 is disposed within the notch 103, that is, the first lead-out structure 80 may be partially or entirely disposed within the notch 103. For example, when the first lead-out structure 80 is connected to the first bus bar 30 at an edge of the first conductive layer 10, the first lead-out structure 80 may be entirely disposed within the notch 103. For example, when the first lead-out structure 80 is connected to the first bus bar 30 on the first conductive layer 10, a portion of the first lead-out structure 80 extends from the first bus bar 30 to the edge of the first conductive layer 10, and the portion of the first lead-out structure 80 extending outside the first conductive layer 10 is located within the notch 103.

[0084] At least a portion of the second lead-out structure 90 is disposed within the notch 103. That is, the second lead-out structure 90 may be partially or entirely disposed within the notch 103. For example, when the second lead-out structure 90 is connected to the conductive segment 41 at an edge of the second conductive layer 20, the second lead-out structure 90 may be entirely disposed within the notch 103. For example, when the second lead-out structure 90 is connected to the conductive segment 41 on the second conductive layer 20, the portion of the second lead-out structure 90 extending outside the second conductive layer 20 is located within the notch 103.

[0085] The beneficial effect of the embodiment of the present application is that the first lead-out structure 80 and the second lead-out structure 90 are arranged in the notch 103, the flexible circuit board can be connected to the power supply in the notch 103, and the overall volume of the electrochromic device 100 after being connected to the power supply can be reduced.

[0086] In some embodiments, please refer to Figure 7 The electrochromic device 100 has a first side 101 , and the notch 103 is located in the middle of the first side 101 .

[0087] The notch 103 is located in the middle of the first side 101 , that is, in the length direction of the first side 101 , the center of the notch 103 is the same or substantially the same distance from both ends of the first side 101 .

[0088] The first side 101 can be the long side of the first conductive layer 10, that is, the notch 103 can be located in the middle of the longer side of the electrochromic device 100. For lenses such as ski goggles and cycling goggles, locating the notch 103 in the middle of the upper side of the lens, so that the notch 103 is located between the eyes, can reduce the impact of the notch 103 on the field of vision.

[0089] In some embodiments, please refer to Figures 1 to 3 The electrochromic device 100 has a first side 101 , the first lead structure 80 extends from the first side 101 in a direction away from the first conductive layer 10 , and the second lead structure 90 extends from the first side 101 in a direction away from the second conductive layer 20 .

[0090] The first lead-out structure 80 extends from the first side 101 in a direction away from the first conductive layer 10 , that is, the portion of the first lead-out structure 80 outside the first conductive layer 10 is protruding from the peripheral side of the electrochromic device 100 .

[0091] The second lead-out structure 90 extends from the first side 101 in a direction away from the second conductive layer 20 , that is, the portion of the second lead-out structure 90 outside the second conductive layer 20 is protruding from the peripheral side of the electrochromic device 100 .

[0092] The beneficial effect of the embodiment of the present application is that the first lead-out structure 80 and the second lead-out structure 90 are protruded on the peripheral side of the electrochromic device 100, which can reduce the obstruction of the first conductive layer 10, the second conductive layer 20 and the central portion 21 of the electrochromic layer group 50 without affecting the original light-transmitting area of ​​the electrochromic device 100.

[0093] In some embodiments, please refer to Figures 1 to 3 The electrochromic device 100 has two first side edges 101 and two second side edges 102 that are opposite to each other. The first side edges 101 and the second side edges 102 are spaced apart from each other, and the two adjacent side edges are connected end to end to form the peripheral side of the electrochromic device 100, wherein the length of the first side edge 101 is greater than the length of the second side edge 102; the first bus bar 30 is located on one of the first side edges 101, and the conductive segment 41 is located on the other first side edge 101.

[0094] The first side 101 and the second side 102 are located on different sides of the electrochromic device 100. The two ends of the first side 101 are respectively connected to the ends of the two second sides 102. The length of the first side 101 is greater than the length of the second side 102. In other words, on the plane where the electrochromic layer assembly 50 is located, the length of the projection of the first side 101 is greater than the length of the projection of the second side 102.

[0095] The first bus bar 30 extends in the same or substantially the same direction as one first side 101, and the first bus bar 30 and the first side 101 are located on the same side of the electrochromic device 100. The conductive segment 41 extends in the same or substantially the same direction as the other first side 101, and the conductive segment 41 and the other first side 101 are located on the same side of the electrochromic device 100. The first bus bar 30 and the conductive segment 41 are respectively located on two relatively long sides of the electrochromic device 100.

[0096] The beneficial effect of the embodiment of the present application is that the first bus bar 30 and the conductive segment 41 are respectively located on two relatively longer side edges of the electrochromic device 100, so that the electrochromic device 100 can change color from the two longer side edges to the middle, and the color change is uniform and fast.

[0097] In some embodiments, please refer to Figures 7 to 9 The orthographic projection of the connecting segment 42 on the plane where the first conductive layer 10 is located partially overlaps with the orthographic projection of the first bus bar 30 on the plane where the first conductive layer 10 is located.

[0098] On a plane perpendicular to the first conductive layer 10 , the projection of the connecting segment 42 may intersect with the projection of the first bus bar 30 ; a portion of the connecting segment 42 may be parallel to the first bus bar 30 , and the projection of the portion of the connecting segment 42 parallel to the first bus bar 30 overlaps with the projection of the first bus bar 30 .

[0099] The connecting section 42 and the first bus bar 30 can block light from transmitting through the electrochromic device 100. On the plane where the first conductive layer 10 is located, the projection of the connecting section 42 partially overlaps with the projection of the first bus bar 30, which can reduce the sum of the projection areas of the connecting section 42 and the first bus bar 30, and can reduce the area on the electrochromic device 100 that blocks light and increases the light-transmitting area.

[0100] In some embodiments, please refer to Figures 1 to 3 The projection of the connecting section 42 on the plane where the first conductive layer 10 is located is spaced apart from the projection of the first bus bar 30 on the plane where the first conductive layer 10 is located, that is, on the plane where the electrochromic layer group 50 is located, the connecting section 42 and the first bus bar 30 are staggered.

[0101] When combining the electrochromic device 100 with other products, it is necessary to press the electrochromic device 100 along the arrangement direction of the first conductive layer 10 and the second conductive layer 20, and stagger the connecting section 42 and the first bus bar 30. This can prevent the connecting section 42 and the first bus bar 30 from being squeezed and approaching each other and contacting and conducting, making the electrochromic device 100 more stable.

[0102] In some embodiments, please refer to Figure 10 and Figure 11 The insulating structure 60 includes a first insulating layer 61 disposed between the connecting segment 42 and the second conductive layer 20 .

[0103] It is understood that the first insulating layer 61 includes an insulating material. Optionally, the first insulating layer 61 can be insulating varnish, insulating ink, etc., which have good insulating properties.

[0104] The beneficial effect of the embodiment of the present application is that the first insulating layer 61 is arranged between the connecting segment 42 and the second conductive layer 20, which can prevent the current from being directly transmitted from the connecting segment 42 to the second conductive layer 20, so that the current is transmitted from the connecting segment 42 and the conductive segment 41 to the second conductive layer 20, so that the electrochromic layer group 50 changes color uniformly between the areas corresponding to the first bus bar 30 and the conductive segment 41.

[0105] In some embodiments, please refer to Figure 12 and Figure 13 The insulating structure 60 includes a first partition space 62 disposed between the connecting segment 42 and the second conductive layer 20 . The first partition space 62 is used to separate the connecting segment 42 and the second conductive layer 20 .

[0106] Alternatively, a second conductive layer 20 identical to the first conductive layer 10 may be formed first, and then the portion of the second conductive layer 20 connected to the connecting segment 42 may be removed to form the first partition space 62. This allows for more consistent molding processes for the second conductive layer 20 and the first conductive layer 10. Alternatively, laser technology may be used to remove the portion of the second conductive layer 20 connected to the connecting segment 42, resulting in higher machining accuracy. Alternatively, when molding the second conductive layer 20 and the connecting segment 42, the connecting segment 42 and the second conductive layer 20 may be molded separately in two separate regions, forming a first partition space between the connecting segment 42 and the second conductive layer 20. This eliminates the need to remove the second conductive layer 20, resulting in fewer steps in manufacturing the electrochromic device 100.

[0107] The beneficial effects of the embodiment of the present application are: the first partition space 62 can separate the connecting segment 42 from the second conductive layer 20, and can prevent the current from being directly conducted from the connecting segment 42 to the second conductive layer 20, so that the current is conducted from the connecting segment 42 and the conductive segment 41 to the second conductive layer 20, so that the electrochromic layer group 50 changes color uniformly between the areas corresponding to the first bus bar 30 and the conductive segment 41.

[0108] In some embodiments, please refer to Figure 14 The insulating structure 60 includes a second partition space 63 arranged between the central portion 21 of the second conductive layer 20 and the edge portion 22 of the second conductive layer 20, and the second partition space 63 is used to separate the central portion 21 of the second conductive layer 20 from the edge portion 22 of the second conductive layer 20 corresponding to the connecting segment 42.

[0109] The second partitioning space 63 is provided between the central portion 21 of the second conductive layer 20 and the edge portion 22 of the second conductive layer 20 corresponding to the connecting segment 42. The connecting segment 42 is provided on the edge portion 22 of the second conductive layer 20. The second partitioning space 63 separates the central portion 21 of the second conductive layer 20 from the edge portion 22 of the second conductive layer 20 corresponding to the connecting segment 42, thereby preventing current from being directly conducted from the edge portion 22 where the connecting segment 42 is located to the central portion 21. The edge portion 22 of the second conductive layer 20 corresponding to the connecting segment 42 refers to the portion of the edge portion 22 of the second conductive layer 20 that overlaps with the projection of the connecting segment 42 on the plane of the electrochromic layer assembly 50.

[0110] Alternatively, a second conductive layer 20 identical to the first conductive layer 10 may be formed first, and then a portion of the second conductive layer 20 may be removed to form a second partitioning space 63 that separates the central portion 21 of the second conductive layer 20 from the edge portion 22 of the second conductive layer 20 where the connecting segment 42 is located. This allows for more consistent forming processes for the second conductive layer 20 and the first conductive layer 10. Alternatively, an etching technique may be used to remove a portion of the second conductive layer 20, which allows for a more precise etching depth, and the second partitioning space 63 may be an etched line.

[0111] The beneficial effect of the embodiment of the present application is that the second partition space 63 can separate the central part 21 of the second conductive layer 20 from the edge part 22 of the second conductive layer 20, and can prevent the current from being directly conducted from the edge part 22 of the second conductive layer 20 where the connecting segment 42 is located to the central part 21 of the second conductive layer 20, so that the current is conducted from the connecting segment 42 and the conductive segment 41 to the central part 21 of the second conductive layer 20, so that the electrochromic layer group 50 changes color uniformly between the areas corresponding to the first bus bar 30 and the conductive segment 41.

[0112] In some embodiments, please refer to Figure 15 and Figure 16 The insulating structure 60 includes a second partition space 63 arranged between the central part 21 of the second conductive layer 20 and the edge part 22 of the second conductive layer 20 where the connecting segment 42 is located. The second partition space 63 is used to separate the central part 21 of the second conductive layer 20 from the edge part 22 of the second conductive layer 20 where the connecting segment 42 is located; the insulating structure 60 also includes a first insulating layer 61 arranged between the connecting segment 42 and the second conductive layer 20. The first insulating layer 61 is arranged between the edge part 22 of the second conductive layer 20 and the connecting segment 42. The first insulating layer 61 is used to prevent current from being conducted from the connecting segment 42 to the edge part 22 of the second conductive layer 20.

[0113] The beneficial effects of the embodiments of the present application are: providing a second partition space 63 can separate the central portion 21 of the second conductive layer 20 from the edge portion 22 of the second conductive layer 20 where the connecting segment 42 is located, so that the current is conducted from the connecting segment 42 and the conductive segment 41 to the central portion 21 of the second conductive layer 20; providing a first insulating layer 61 can separate the edge portion 22 of the second conductive layer 20 from the connecting segment 42, which can prevent the position of the electrochromic layer group 50 corresponding to the edge portion 22 of the second conductive layer 20 from changing color, and can reduce the power consumption of the electrochromic device 100.

[0114] In some embodiments, please refer to Figures 10 to 16 The electrochromic device 100 further includes a second insulating layer 70 ; the second insulating layer 70 is disposed between the first bus bar 30 and the electrochromic layer group 50 ; and / or the second insulating layer 70 is disposed between the second bus bar 40 and the electrochromic layer group 50 .

[0115] It is understood that the second insulating layer 70 includes an insulating material. Optionally, the second insulating layer 70 can be insulating varnish, insulating ink, etc., which have good insulating properties.

[0116] It is understood that one or two second insulating layers 70 may be provided. When one second insulating layer 70 is provided, the second insulating layer 70 may be provided between the first bus bar 30 and the electrochromic layer group 50, or between the second bus bar 40 and the electrochromic layer group 50. When two second insulating layers 70 are provided, one second insulating layer 70 may be provided between the first bus bar 30 and the electrochromic layer group 50, and the other second insulating layer 70 may be provided between the second bus bar 40 and the electrochromic layer group 50.

[0117] If the first bus bar 30 or the second bus bar 40 is a silver wire, the silver wire may react with the electrolyte in the electrochromic layer assembly 50; the provision of the second insulating layer 70 can prevent the first and second bus bars 30, 40 from reacting with the electrolyte, thereby maintaining the stability of the electrochromic device 100. Furthermore, on the plane where the electrochromic layer assembly 50 is located, if the orthographic projection of the connecting segment 42 coincides with the orthographic projection of the first bus bar 30, when the electrochromic device 100 is pressed together, the connecting segment 42 and the first bus bar 30 may be squeezed and contacted, thereby causing electrical conduction. Providing the second insulating layer 70 between the connecting segment 42 and the first bus bar 30 can reduce the risk of contact and electrical conduction between the connecting segment 42 and the first bus bar 30, thereby further stabilizing the electrochromic device 100.

[0118] In some embodiments, the electrochromic device 100 includes a central portion and an edge portion, as viewed from the plane where the electrochromic device 100 is located. The central portion is a visible area, and the edge portion is used to arrange bus bars. The central portion of the electrochromic device 100 includes the central portion of the first conductive layer 10, the central portion of the electrochromic layer group 50, and the central portion 21 of the second conductive layer 20; the edge portion of the electrochromic device 100 includes the edge portion of the first conductive layer 10, the edge portion of the electrochromic layer group 50, and the edge portion 22 of the second conductive layer 20. Please refer to Figures 7 to 9The electrochromic device 100 includes a first conductive layer 10, an electrochromic layer group 50, and a second conductive layer 20, which are stacked in sequence. A first bus bar 30 is provided on the edge portion of the first conductive layer 10 and is electrically connected to the first conductive layer 10. The electrochromic layer group 50 is provided on one side of the first conductive layer 10. The second conductive layer 20 is provided on the side of the electrochromic layer group 50 facing away from the first conductive layer 10. The second conductive layer 20 includes a central portion 21 and an edge portion 22. A second bus bar 40 is provided on the edge portion 22 of the second conductive layer 20. The second bus bar 40 includes a conductive segment 41 and a connecting segment 42 electrically connected to the conductive segment 41. The conductive segment 41 is electrically connected to the central portion 21 of the second conductive layer 20.

[0119] The electrochromic device 100 has two opposing first sides 101 and two opposing second sides 102. The first sides 101 and second sides 102 are spaced apart and connected end to end. The length of the first side 101 is greater than the length of the second side 102. A notch 103 is defined in the middle of one of the first sides 101. The notch 103 extends through the first conductive layer 10, the electrochromic layer assembly 50, and the second conductive layer 20. The electrochromic device 100 also includes a first lead structure 80 electrically connected to the first bus bar 30. The first lead structure 80 extends from the first bus bar 30 into the notch 103. The electrochromic device 100 also includes a second lead-out structure 90 electrically connected to the connecting section 42, and the second lead-out structure 90 extends from the connecting section 42 into the gap 103; the orthographic projection of the first lead-out structure 80 on the plane where the first conductive layer 10 is located and the orthographic projection of the second lead-out structure 90 on the plane where the first conductive layer 10 is located are located on the same first side edge 101 of the first conductive layer 10.

[0120] The first bus bar 30 extends along the edge of the first conductive layer 10 , and the conductive segment 41 extends along the edge of the second conductive layer 20 . The first bus bar 30 is located on one of the first sides 101 , and the conductive segment 41 is located on the other first side 101 .

[0121] The second embodiment of the present application provides an electrochromic device, please refer to Figure 17 The electrochromic device 1000 includes a substrate layer 200 and the electrochromic device 100 of any one of the embodiments of the first aspect; the substrate layer 200 is located on the side of the second conductive layer 20 away from the first conductive layer 10; and / or, the substrate layer 200 is located on the side of the first conductive layer 10 away from the second conductive layer 20.

[0122] The substrate layer 200 can support the electrochromic device 100 and can be light-transmissive. Optionally, the substrate layer 200 can include polyethylene terephthalate (PET) and has good light-transmission and insulation properties, and can provide insulation protection for the electrochromic device 100. In other embodiments, the substrate layer 200 can also be made of glass or other materials.

[0123] It can be understood that the substrate layer 200 can be one or two. When the substrate layer 200 is one, the substrate layer 200 can be disposed on the side of the second conductive layer 20 away from the first conductive layer 10, or on the side of the first conductive layer 10 away from the second conductive layer 20. When the substrate layer 200 is two, one of the substrate layers 200 is disposed on the side of the second conductive layer 20 away from the first conductive layer 10, and the other substrate layer 200 is disposed on the side of the first conductive layer 10 away from the second conductive layer 20.

[0124] Optionally, the substrate layer 200 can be provided with a through hole corresponding to the connecting segment 42 and the first bus bar 30, so that the flexible circuit board can be directly connected to the connecting segment 42 and the first bus bar 30.

[0125] Optionally, when the substrate layer 200 is disposed on the side of the second conductive layer 20 away from the first conductive layer 10, the substrate layer 200, the second conductive layer 20, the connecting segment 42 and the electrochromic layer group 50 can form a first partition space 62, and the substrate layer 200, the second conductive layer 20 and the electrochromic layer group 50 can form a second partition space 63.

[0126] Optionally, when the electrochromic device 100 is provided with a notch 103, the notch 103 penetrates the substrate layer 200, so that the first lead-out structure 80 and the second lead-out structure 90 are connected to the flexible circuit board in the notch 103.

[0127] The electrochromic device 100 of the first aspect of the present application has the advantages of the electrochromic device 100 of the first aspect of the present application. The substrate layer 200 can provide support and facilitate the connection of the electrochromic device 100 to other structures.

[0128] The third aspect of the present application provides a terminal product, which includes the electrochromic device 100 of any one of the first aspect of the present application or the electrochromic device 1000 of the second aspect of the present application. The terminal product includes any one of a rearview mirror, a curtain wall, an automobile sunroof, an automobile side window, an automobile windshield, a shell of an electronic product, glasses, a vehicle, and a display panel.

[0129] Optionally, the glasses can be ski goggles or cycling glasses.

[0130] The beneficial effects of the embodiments of the present application are that by applying the electrochromic device 100 of the above-mentioned first aspect embodiment to a terminal product, the space occupied by the flexible circuit board around the electrochromic device 1000 can be reduced, and all the advantages of the electrochromic device 100 described above are possessed. By applying the electrochromic device 1000 of the above-mentioned second aspect embodiment to a terminal product, all the advantages of the electrochromic device 100 and the electrochromic device 1000 described above are possessed.

[0131] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electrochromic device, characterized in that: include: a first conductive layer, wherein a first bus bar is provided on the first conductive layer and is electrically connected to the first conductive layer; an electrochromic layer group, disposed on one side of the first conductive layer; a second conductive layer disposed on a side of the electrochromic layer group facing away from the first conductive layer, the second conductive layer comprising a central portion and an edge portion; a second bus bar disposed on the edge portion, the second bus bar comprising a conductive segment and a connecting segment electrically connected to the conductive segment, the conductive segment being electrically connected to the central portion; a projection of the first bus bar on the plane where the first conductive layer is located being spaced apart from a projection of the conductive segment on the plane where the first conductive layer is located; The connecting segment extends from the conductive segment toward the first bus bar; An insulating structure is further provided on the second conductive layer, and the insulating structure is used to prevent current from being conducted from the connecting segment to the central portion.

2. The electrochromic device according to claim 1, wherein The electrochromic device also includes a first lead-out structure and a second lead-out structure, the first lead-out structure is electrically connected to the first bus bar, and the first lead-out structure extends from the first bus bar to the outside of the first conductive layer; the second lead-out structure is electrically connected to the connecting section, and the second lead-out structure extends from the connecting section to the outside of the second conductive layer; the first lead-out structure and the second lead-out structure are located on the same side of the electrochromic device.

3. The electrochromic device according to claim 2, wherein: A notch is provided on one side of the electrochromic device, and the notch passes through the first conductive layer, the electrochromic layer group, and the second conductive layer; At least a portion of the first lead-out structure is disposed in the notch, and at least a portion of the second lead-out structure is disposed in the notch.

4. The electrochromic device according to any one of claims 1 to 3, characterized in that The projection of the connecting segment on the plane where the first conductive layer is located partially overlaps with the projection of the first bus bar on the plane where the first conductive layer is located; or, A projection of the connecting segment on the plane where the first conductive layer is located is spaced apart from a projection of the first bus bar on the plane where the first conductive layer is located.

5. The electrochromic device according to any one of claims 1 to 3, characterized in that: The insulating structure includes a first insulating layer disposed between the connecting segment and the second conductive layer.

6. The electrochromic device according to any one of claims 1 to 3, characterized in that: The insulating structure includes a first partition space provided between the connecting segment and the second conductive layer, wherein the first partition space is used to separate the connecting segment and the second conductive layer.

7. The electrochromic device according to any one of claims 1 to 3, characterized in that: The insulating structure includes a second partition space provided between the central portion and the edge portion, wherein the second partition space is used to separate the central portion from the edge portion corresponding to the connecting section.

8. The electrochromic device according to any one of claims 1 to 3, characterized in that The electrochromic device further includes a second insulating layer; The second insulating layer is provided between the first bus bar and the electrochromic layer group; and / or, The second insulating layer is disposed between the second bus bar and the electrochromic layer group.

9. An electrochromic device, characterized in that: An electrochromic device comprising a substrate layer and any one of claims 1 to 8; The substrate layer is located on a side of the second conductive layer facing away from the first conductive layer; and / or, The substrate layer is located on a side of the first conductive layer facing away from the second conductive layer.

10. A terminal product, characterized in that: The electrochromic device comprises the electrochromic device according to any one of claims 1 to 8 or the electrochromic apparatus according to claim 9, 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, and a display panel.

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