Electrochromic device, color changing device and terminal product

Abstract

The embodiment of the utility model provides an electrochromic device, a color changing device and a terminal product, relates to the technical field of electrochromism, and is used for solving the technical problem that the width of a non-visual area of the electrochromic device is large. The electrochromic device comprises an electrochromic layer, a first conductive substrate layer and a second conductive substrate layer; a first conductive part is arranged on the first conductive substrate layer, a second conductive part is arranged on the second conductive substrate layer, and a sealing layer is arranged between the first conductive substrate layer and the second conductive substrate layer; the orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially coincides with the orthographic projection of the first conductive part on the plane where the electrochromic layer is located; and / or, at least part of the orthographic projection of the sealing layer on the plane where the electrochromic layer is located coincides with the orthographic projection of the second conductive part on the plane where the electrochromic layer is located, and the width of a non-visual area of the electrochromic device can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electrochromic technology, and in particular to an electrochromic device, a color changing apparatus, and a terminal product. Background Art

[0002] Electrochromism refers to the phenomenon that the optical properties of a material (reflectivity, transmittance, absorptivity, etc.) undergo stable and reversible color changes under the action of an external electric field, which manifests itself in appearance as reversible changes in color and transparency.

[0003] The electrochromic device in the prior art generally includes a visible area and a non-visible area surrounding the visible area. However, the width of the non-visible area of ​​the current electrochromic device is relatively large, which increases the area of ​​the electrochromic device and reduces the applicability of the electrochromic device. Utility Model Content

[0004] In view of the above problems, the embodiments of the present application provide an electrochromic device, a color changing apparatus and a terminal product to reduce the width of the non-visible area of ​​the electrochromic device, reduce the area of ​​the electrochromic device, and improve the applicability of the electrochromic device.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] A first aspect of an embodiment of the present application provides an electrochromic device, comprising an electrochromic layer and a first conductive substrate layer and a second conductive substrate layer respectively arranged on both sides of the electrochromic layer; a first conductive portion is arranged on the first conductive substrate layer, a second conductive portion is arranged on the second conductive substrate layer, and a sealing layer is arranged between the first conductive substrate layer and the second conductive substrate layer; wherein,

[0007] The orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially overlaps with the orthographic projection of the first conductive portion on the plane where the electrochromic layer is located; and / or,

[0008] The orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially overlaps with the orthographic projection of the second conductive portion on the plane where the electrochromic layer is located.

[0009] An embodiment of the present application provides an electrochromic device, wherein an orthographic projection of a sealing layer on a plane where the electrochromic layer is located at least partially overlaps with an orthographic projection of a first conductive portion on a plane where the electrochromic layer is located; and / or an orthographic projection of a sealing layer on a plane where the electrochromic layer is located at least partially overlaps with an orthographic projection of a second conductive portion on a plane where the electrochromic layer is located, and the sealing layer is disposed between a first conductive substrate layer and a second conductive substrate layer; the first conductive substrate layer, the sealing layer, and the second conductive substrate layer can be disposed sequentially along a thickness direction of the electrochromic device, so that the sealing layer does not need to be disposed on the outside of the first conductive portion or the second conductive portion, thereby reducing the width of a non-visible region of the electrochromic device, reducing the area of ​​the electrochromic device, and improving the applicability of the electrochromic device.

[0010] In a possible implementation, the first conductive portion is disposed in the sealing layer, and the sealing layer at least partially covers the first conductive base layer; and / or the second conductive portion is disposed in the sealing layer, and the sealing layer at least partially covers the second conductive base layer.

[0011] In a possible implementation manner, a projection of the first conductive portion on the plane where the electrochromic layer is located does not overlap or partially overlaps with a projection of the second conductive portion on the plane where the electrochromic layer is located.

[0012] In a possible implementation manner, a first insulating portion and a second insulating portion are further provided in the sealing layer, the first insulating portion is provided on the first conductive base layer, and the second insulating portion is provided on the second conductive base layer.

[0013] In a possible implementation, the first conductive portion and the first insulating portion enclose a first accommodating space, and the first conductive portion and the first insulating portion at least surround a portion of the outer circumference of the electrochromic layer; and / or,

[0014] The second conductive portion and the second insulating portion enclose a second accommodating space, and the second conductive portion and the second insulating portion at least surround a portion of the outer circumference of the electrochromic layer.

[0015] In a possible implementation, the orthographic projection of the first insulating portion on the plane where the electrochromic layer is located at least partially covers the orthographic projection of the second conductive portion on the plane where the electrochromic layer is located; and / or, the orthographic projection of the second insulating portion on the plane where the electrochromic layer is located at least partially covers the orthographic projection of the first conductive portion on the plane where the electrochromic layer is located.

[0016] In a possible implementation, the width of the sealing layer extending into the interior of the electrochromic device is less than or equal to 1 millimeter.

[0017] In a possible implementation, the electrochromic device is formed with a containing space, the perimeter of the containing space is L1; the length of the first conductive portion is L2, and the ratio of L2 to L1 is in the range of 0.1 to 0.7;

[0018] and / or,

[0019] The electrochromic device is formed with an accommodating space, the length of the second conductive portion is L3, and the ratio of L3 to L1 is in the range of 0.1 to 0.7.

[0020] In a possible implementation, in the accommodating space, a ratio of a total length of the first conductive portion and the second conductive portion in the accommodating space to a perimeter L1 of the accommodating space is in a range of 0.6 to 1.

[0021] In a possible implementation, the first conductive portion includes at least two first sub-conductive portions, the first insulating portion includes at least two first sub-insulating portions, and the first sub-conductive portions and the first sub-insulating portions are alternately arranged; and / or,

[0022] The second conductive portion includes at least two second sub-conductive portions, the second insulating portion includes at least two second sub-insulating portions, and the second sub-conductive portions and the second sub-insulating portions are alternately arranged.

[0023] In a possible implementation, the device further includes a first extraction electrode and a second extraction electrode, wherein the first extraction electrode is electrically connected to the first conductive portion, and the second extraction electrode is electrically connected to the second conductive portion;

[0024] A projection of the first lead-out electrode on a plane where the electrochromic layer is located does not overlap with a projection of the first lead-out electrode on a plane where the electrochromic layer is located.

[0025] In a possible implementation manner, a distance between ends where an orthographic projection of the first conductive portion on the electrochromic layer and an orthographic projection of the second conductive portion on the electrochromic layer are close to each other is less than or equal to 1 mm.

[0026] In a possible implementation, a first protecting portion is disposed on the first conductive base layer, the first protecting portion covers a surface of the first conductive portion facing away from the first conductive base layer, and the first protecting portion at least partially covers the first conductive base layer;

[0027] And / or, a second protecting portion is disposed on the second conductive base layer, the second protecting portion covers a surface of the second conductive portion facing away from the second conductive base layer, and the second protecting portion at least partially covers the second conductive base layer.

[0028] A second aspect of an embodiment of the present application provides a color-changing device, comprising the above-mentioned electrochromic device and a substrate, wherein the substrate is arranged on a side of the first conductive substrate layer away from the electrochromic layer; or, the substrate is arranged on a side of the second conductive substrate layer away from the electrochromic layer; and the substrates are both made of transparent materials.

[0029] In a possible implementation, a shielding layer is included, and the shielding layer is disposed at an edge portion of the substrate, and an orthographic projection of the sealing layer on the substrate completely falls on the shielding layer.

[0030] A third aspect of an embodiment of the present application provides a terminal product, including an electrochromic device or a color-changing device, wherein the terminal product includes 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.

[0031] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the electrochromic devices, color-changing devices and terminal products provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of the structure of an electrochromic device provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the structure of the first conductive substrate layer and the second conductive substrate layer provided in an embodiment of the present application;

[0035] Figure 3 The embodiment of the present application provides Figure 1 A top view of the visible area, the first conductive portion and the first insulating portion on the first conductive substrate layer when viewed from a main viewing angle;

[0036] Figure 4 The embodiment of the present application provides Figure 1 A bottom view of the visible area, the second conductive portion and the second insulating portion on the second conductive substrate layer when viewed from a main viewing angle;

[0037] Figure 5 A schematic diagram of a structure in which the first conductive portion and the second conductive portion provided in an embodiment of the present application do not overlap at all;

[0038] Figure 6 A schematic diagram of a structure in which the first conductive portion and the second conductive portion provided in an embodiment of the present application partially overlap;

[0039] Figure 7 A schematic diagram of providing a first conductive portion, a first insulating portion and a first protective portion on a first conductive substrate layer provided in an embodiment of the present application;

[0040] Figure 8 A schematic diagram of the structure of the first conductive portion, the first insulating portion and the first protective portion provided in an embodiment of the present application;

[0041] Fig. 9 A schematic diagram of providing a second conductive portion, a second insulating portion, and a second protective portion on a second conductive substrate layer provided in an embodiment of the present application;

[0042] Fig.10 A schematic diagram of the structure of the second conductive portion, the second insulating portion and the second protective portion provided in an embodiment of the present application;

[0043] Fig.11 A schematic structural diagram of a first conductive base layer of a first conductive portion and a first insulating portion provided in an embodiment of the present application;

[0044] Fig.12 A schematic structural diagram of a second conductive substrate layer of a second conductive portion and a second insulating portion provided in an embodiment of the present application;

[0045] Fig.13 Provided for the embodiments of this application Figure 7 The first conductive part and Figure 8 A schematic diagram of the relative position of the second conductive part;

[0046] Fig.14 A schematic structural diagram of a first conductive substrate layer having a first conductive portion and a first insulating portion in another embodiment provided in an embodiment of the present application;

[0047] Fig.15 A schematic structural diagram of a second conductive substrate layer having a second conductive portion and a second insulating portion in another embodiment provided in an embodiment of the present application;

[0048] Fig.16 Provided for the embodiments of this application Fig.10 The first conductive part and Fig.11 A schematic diagram of the relative position of the second conductive part;

[0049] Fig.17A schematic structural diagram of a first conductive substrate layer having a first conductive portion and a first insulating portion in another embodiment provided in an embodiment of the present application;

[0050] Fig.18 A schematic structural diagram of a second conductive substrate layer having a second conductive portion and a second insulating portion in another embodiment provided in an embodiment of the present application;

[0051] Fig.19 Provided for the embodiments of this application Fig.13 The first conductive part and Fig.14 A schematic diagram of the relative position of the second conductive part;

[0052] Fig. 20 A schematic structural diagram of a first conductive portion having a first sub-conductive portion and a first insulating portion having a first sub-insulating portion provided in an embodiment of the present application;

[0053] Fig.21 A schematic structural diagram of a second conductive portion having a second sub-conductive portion and a second insulating portion having a second sub-insulating portion provided in an embodiment of the present application;

[0054] Fig. 22 Provided for the embodiments of this application Fig. 20 The first conductive part and Fig.21 A schematic diagram of the relative position of the second conductive part;

[0055] Fig.23 A schematic diagram of a color-changing device including an electrochromic device provided in an embodiment of the present application;

[0056] Fig.24 Provided for the embodiments of this application Fig.23 Exploded view of the mesochromic device.

[0057] Description of reference numerals:

[0058] 10. Visible area; 20. Non-visible area;

[0059] 100, a first conductive substrate layer;

[0060] 110, first base layer; 120, first conductive layer; 130, first conductive portion; 130a, first sub-conductive portion; 131, first lead-out bus bar; 140, first insulating portion; 140a, first sub-insulating portion; 150, first protective portion;

[0061] 200, a second conductive substrate layer;

[0062] 210, second base layer; 220, second conductive layer; 230, second conductive portion; 230a, second sub-conductive portion; 231, second lead bus bar; 240, second insulating portion; 240a, second sub-insulating portion; 250, second protective portion;

[0063] 300, sealing layer;

[0064] 400, electrochromic layer;

[0065] 410, color-changing material layer; 420, ion conduction layer; 430, ion storage layer;

[0066] 500. Substrate;

[0067] 600. Occlusion layer. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0069] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly or indirectly disposed on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the patent. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0070] As described in the background technology, the electrochromic device has a visible area and a non-visible area arranged around the visible area, wherein the bus bar and the sealing layer are arranged in sequence along the width direction of the non-visible area of ​​the electrochromic device, so that the width of the non-visible area of ​​the electrochromic device is larger, thereby reducing the applicability of the electrochromic device.

[0071] In view of the above technical problems, the first aspect of the embodiment of the present application provides an electrochromic device, including an electrochromic layer and a first conductive substrate layer and a second conductive substrate layer respectively arranged on both sides of the electrochromic layer; a first conductive portion is arranged on the first conductive substrate layer, a second conductive portion is arranged on the second conductive substrate layer, and a sealing layer is arranged between the first conductive substrate layer and the second conductive substrate layer; wherein the orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially overlaps with the orthographic projection of the first conductive portion on the plane where the electrochromic layer is located; and / or, the orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially overlaps with the orthographic projection of the second conductive portion on the plane where the electrochromic layer is located. The electrochromic device provided by the present application reduces the width of the non-visible area of ​​the electrochromic device by partially stacking the sealing layer and the bus bar along the thickness direction of the electrochromic device, thereby reducing the proportion of the non-visible area to the visible area, thereby improving the applicability of the electrochromic device.

[0072] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0073] Reference Figure 1 and Figure 2 An embodiment of the present application provides an electrochromic device, including an electrochromic layer 400 and a first conductive substrate layer 100 and a second conductive substrate layer 200 respectively arranged on both sides of the electrochromic layer 400, a first conductive portion 130 is provided on the first conductive substrate layer 100, a second conductive portion 230 is provided on the second conductive substrate layer 200, and a sealing layer 300 is provided between the first conductive substrate layer 100 and the second conductive substrate layer 200.

[0074] The orthographic projection of the sealing layer 300 on the plane where the electrochromic layer 400 is located at least partially overlaps with the orthographic projection of the first conductive portion 130 on the plane where the electrochromic layer 400 is located; and / or, the orthographic projection of the sealing layer 300 on the plane where the electrochromic layer 400 is located at least partially overlaps with the orthographic projection of the second conductive portion 230 on the plane where the electrochromic layer 400 is located.

[0075] Optionally, the electrochromic layer 400 is a liquid electrochromic medium, a solid electrochromic medium or a sol-state electrochromic medium, or a combination of two or more thereof.

[0076] Preferably, the electrochromic layer 400 includes a color-changing material layer 410, an ion conduction layer 420 and an ion storage layer 430 which are stacked in sequence along the thickness direction of the electrochromic device, wherein the color-changing material layer 410 is arranged on the first conductive layer 120, the ion storage layer 430 is arranged on the second conductive layer 220, and the ion conduction layer 420 is arranged between the color-changing material layer 410 and the ion storage layer 430.

[0077] By providing the electrochromic layer 400 and introducing current or voltage between the first conductive substrate layer 100 and the second conductive substrate layer 200 to form an electric field on both sides of the electrochromic layer 400, the electrochromic layer 400 is driven to color or fade, so that the electrochromic device shows a change in transmittance in appearance, thereby achieving the effect of regulating the transmittance of the scene in which the electrochromic device is applied.

[0078] Continue to refer to Figure 1 and Figure 2 A sealing layer 300 , a first conductive portion 130 and a second conductive portion 230 are disposed between the first conductive base layer 100 and the second conductive base layer 200 .

[0079] In a plane parallel to the first conductive substrate layer 100 , the color-changing material layer 410 is disposed at the center portion of the electrochromic device, and the sealing layer 300 , the first conductive portion 130 and the second conductive portion 230 are disposed at the edge portion of the electrochromic device.

[0080] Furthermore, the color-changing material layer 410 is arranged at intervals on the inner side of the first conductive part 130, and the sealing layer 300 is at least partially filled between the color-changing material layer 410 and the first conductive part 130, thereby reducing the possibility of the color-changing material layer 410 directly contacting the first conductive part 130, avoiding the color-changing material layer 410 from corroding the first conductive part 130, and ensuring that the conductive performance of the first conductive part 130 is not affected.

[0081] The thickness of the electrochromic layer 410 can be set to be greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the electrochromic layer 410 can be set within any thickness range of 10 microns-20 microns, 20 microns-30 microns, 30 microns-40 microns, and 40 microns-50 microns.

[0082] In a plane parallel to the second conductive substrate layer 200 , the ion storage layer 430 is disposed at the central portion of the electrochromic device, and the sealing layer 300 , the first conductive portion 130 , and the second conductive portion 230 are disposed at the edge portion of the electrochromic device.

[0083] Furthermore, the ion storage layer 430 is arranged at intervals on the inner side of the second conductive part 230, and the sealing layer 300 is at least partially filled between the ion storage layer 430 and the second conductive part 230, thereby reducing the possibility of the ion storage layer 430 directly contacting the second conductive part 230, avoiding the ion storage layer 430 from corroding the second conductive part 230, and ensuring that the conductive performance of the second conductive part 230 is not affected.

[0084] The thickness of the ion storage layer 430 can be set to be greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the ion storage layer 430 can be set within any thickness range of 10 microns-20 microns, 20 microns-30 microns, 30 microns-40 microns, and 40 microns-50 microns.

[0085] In the above embodiment, the central part of the electrochromic layer 400 is located in the visible area of ​​the electrochromic device, and the sealing layer 300, the first conductive part 130 and the second conductive part 230 are located in the non-visible area of ​​the electrochromic device. Among them, the sealing layer 300 and the first conductive part 130 are at least partially arranged in sequence along the thickness direction of the electrochromic device; and / or, the sealing layer 300 and the second conductive part 230 are at least partially arranged in sequence along the thickness direction of the electrochromic device. By partially overlapping the bus bar and the sealing layer in the thickness direction, the sealing layer 300 does not need to be arranged on the outside of the bus bar. While ensuring effective sealing, the width of the non-visible area 20 formed by the sealing layer and the bus bar in the electrochromic device is reduced, thereby improving the applicability of the electrochromic device.

[0086] Reference Figure 1 and Figure 2 The first conductive substrate layer 100 is used to support the first conductive part 130, and the second conductive substrate layer 200 is used to support the second conductive part 230. The second conductive substrate layer 200 cooperates with the first conductive substrate layer 100 to jointly accommodate structures such as the electrochromic layer 400 and the sealing layer 300 located between the first conductive substrate layer 100 and the second conductive substrate layer 200. The first conductive substrate layer 100 and the second conductive substrate layer 200 can be set to be transparent so that the electrochromic device can transmit light.

[0087] The first conductive substrate 100 may include a first substrate 110 and a first conductive layer 120 disposed on a surface of the first substrate 110 . The first conductive layer 120 is located on a side of the first substrate 110 close to the electrochromic layer 400 .

[0088] The first substrate layer 110 may be configured as a rigid first substrate layer 110 . For example, the material of the first substrate layer 110 may be configured as glass or the like to increase the hardness and rigidity of the first substrate layer 110 and improve the supporting effect of the first substrate layer 110 .

[0089] Alternatively, the first substrate layer 110 can also be set as a flexible first substrate layer 110. For example, the material of the first substrate layer 110 can be set to one or more of polyester resin (i.e., condensation product of terephthalic acid and ethylene glycol, Polyethyleneterephthalate, abbreviated as PET or PEIT), polymethyl methacrylate (i.e., acrylic, Polymethylmethacrylate, abbreviated as PMMA), polycarbonate (i.e., a high molecular polymer containing carbonate groups in the molecular chain, Polycarbonate, abbreviated as PC), and polyimide (Polyimide, abbreviated as PI).

[0090] The second conductive substrate 200 may include a second substrate 210 and a second conductive layer 220 disposed on the surface of the second substrate 210 . The second conductive layer 220 is located on a side of the second substrate 210 close to the electrochromic layer 400 .

[0091] The second substrate layer 210 can be set as a rigid second substrate layer 210 . For example, the material of the second substrate layer 210 can be set to glass or the like to increase the hardness and rigidity of the second substrate layer 210 and improve the supporting effect of the first substrate layer 110 .

[0092] Alternatively, the second substrate layer 210 may also be configured as a flexible second substrate layer 210 .

[0093] When the first substrate layer 110 is provided as a flexible first substrate layer 110 , the thickness of the first substrate layer 110 may be provided to be greater than or equal to 20 micrometers and less than or equal to 500 micrometers.

[0094] For example, the thickness of the first substrate layer 110 can be set within any thickness range of 20 μm-50 μm, 50 μm-100 μm, 100 μm-150 μm, 150 μm-200 μm, 200 μm-250 μm, 250 μm-300 μm, 300 μm-350 μm, 350 μm-400 μm, 400 μm-450 μm, and 450 μm-500 μm.

[0095] For example, the thickness of the first substrate layer 110 may be set to one of 20 micrometers, 50 micrometers, 100 micrometers, 150 micrometers, 200 micrometers, 250 micrometers, 300 micrometers, 350 micrometers, 400 micrometers, 450 micrometers, and 500 micrometers.

[0096] When the second substrate layer 210 is provided as a flexible second substrate layer 210 , the thickness of the second substrate layer 210 may be provided to be greater than or equal to 20 micrometers and less than or equal to 500 micrometers.

[0097] The thickness of the second base layer 210 may be the same as the thickness of the first base layer 110 , or the thickness of the second base layer 210 may be different from the thickness of the first base layer 110 .

[0098] Any of the above thickness ranges may include at least one of the two endpoint values. For example, when the thickness of the first substrate layer 110 is set within the thickness range of 20 microns to 50 microns, the thickness of the first substrate layer 110 may be greater than or equal to 20 microns and less than or equal to 50 microns; or, the thickness of the first substrate layer 110 may also be greater than 20 microns and less than or equal to 50 microns; or, the thickness of the first substrate layer 110 may be greater than or equal to 20 microns and less than 50 microns.

[0099] Alternatively, any of the above thickness ranges may not include two endpoint values. For example, when the thickness of the first substrate layer 110 is set within the thickness range of 20 microns to 50 microns, the thickness of the first substrate layer 110 can also be set to be greater than 20 microns and less than 50 microns.

[0100] It should be noted that the various numerical ranges appearing in the embodiments of the present application, such as other thickness ranges or length ranges that appear later, can all refer to the thickness range of the first substrate layer 110, that is, the numerical ranges may include at least one of the two endpoint values, or the numerical range may not include the two endpoint values. The embodiments of the present application will not be described in detail later.

[0101] Exemplarily, the transmittance of the first substrate layer 110 can be set to be greater than or equal to 70%. For example, the transmittance of the first substrate layer 110 can be set within any transmittance range of 70%-75%, 75%-80%, 80%-85%, 85%-90%, and 90%-95%. For example, the transmittance of the first substrate layer 110 can be set to one of 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94% and 95%.

[0102] It should be noted that the material of the first substrate layer 110 can be set to an insulating material, and the conductive surface of the first conductive substrate layer 100 is the surface of the first conductive layer 120. Exemplarily, the material of the first conductive layer 120 can be set to one or more of indium tin oxide (ITO), aluminum zinc oxide (AZO), fluorine-doped tin oxide (FTO), silver nanowires, graphene, carbon nanotubes, metal mesh transparent conductive structures, and nano silver paste.

[0103] The thickness of the first conductive layer 120 can be set to be greater than or equal to 0.1 nanometers and less than or equal to 10 micrometers. The thickness of the first conductive layer 120 can be set within any thickness range of 0.1 nanometers-0.5 nanometers, 0.5 nanometers-1 nanometer, 1 nanometer-5 nanometers, 5 nanometers-10 nanometers, 10 nanometers-100 nanometers, 100 nanometers-500 nanometers, 500 nanometers-1 micrometer, 1 micrometer-3 micrometers, 3 micrometers-5 micrometers, 5 micrometers-7 micrometers, and 7 micrometers-10 micrometers; for example, the thickness of the first conductive layer 120 can be set within a thickness range of 1 nanometer-1 micrometer.

[0104] Specifically, the thickness of the first conductive layer 120 can be set to one of 0.1 nanometers, 0.5 nanometers, 1 nanometer, 5 nanometers, 10 nanometers, 100 nanometers, 500 nanometers, 1 micrometer, 3 micrometers, 5 micrometers, 7 micrometers and 10 micrometers.

[0105] Exemplarily, the second conductive substrate layer 200 may include a second substrate layer 210, and a second conductive layer 220 disposed on the surface of the second substrate layer 210. The material of the second substrate layer 210 may be set to an insulating material, and the conductive surface of the second conductive substrate layer 200 is the surface of the second conductive layer 220. The parameters such as the material, thickness, and light transmittance of the second substrate layer 210 may all refer to the first substrate layer 110, and the specifics may refer to the above description, and the embodiments of the present application will not be repeated here.

[0106] It should be noted that the second substrate layer 210 can be set in the same manner as the first substrate layer 110. For example, when the first substrate layer 110 is set as a flexible first substrate layer 110, the second substrate layer 210 can be correspondingly set as a flexible second substrate layer 210; when the first substrate layer 110 is set as a rigid first substrate layer 110, the second substrate layer 210 can be correspondingly set as a rigid second substrate layer 210.

[0107] The material and thickness of the second conductive layer 220 may refer to the first conductive layer 120 , and the details may refer to the above description, which will not be described in detail in the embodiment of the present application.

[0108] Exemplarily, the first conductive part 130 is disposed on the conductive surface of the first conductive base layer 100 . Specifically, the first conductive part 130 is disposed on the surface of the first conductive layer 120 away from the first base layer 110 , and the first conductive part 130 is electrically connected to the first conductive layer 120 .

[0109] The material of the first conductive part 130 may include any one of conductive silver paste, conductive copper paste, conductive carbon paste, conductive ink, copper foil, copper wire or conductive adhesive film, or a combination of at least two thereof; for example, the material of the first conductive part 130 may be set to conductive silver paste.

[0110] Alternatively, the material combination of the first conductive part 130 may include a combination of conductive silver paste and conductive copper paste, a combination of conductive copper paste and conductive carbon paste, a combination of conductive carbon paste and conductive ink, a combination of conductive ink and conductive adhesive film, a combination of copper foil and copper wire, a combination of conductive silver paste, conductive copper paste and conductive carbon paste, a combination of conductive silver paste, conductive carbon paste and conductive ink, a combination of conductive copper paste, conductive carbon paste and conductive adhesive film, or a combination of conductive silver paste, conductive copper paste, conductive carbon paste, conductive ink, copper wire, copper foil and conductive adhesive film.

[0111] It should be noted that in the above embodiment, the resistivity of the first conductive part 130 is lower than the resistivity of the first conductive layer 120 , and those skilled in the art can reasonably select the material of the first conductive part 130 according to the resistivity and size of the first conductive part 130 .

[0112] The resistivity of the first conductive portion 130 may be set to be greater than or equal to 1×10 -3 Ω·cm, less than or equal to 1×10 Ω·cm, the resistivity of the first conductive portion 130 can be set to 1×10 -3 Ω·cm-5×10 -3 Ω·cm、5×10 -3 Ω·cm-1×10 -2 Ω·cm、1×10 -2 Ω·cm-5×10 -2 Ω·cm、5×10 -2 Ω·cm-1×10 -1 Ω·cm、1×10 -1 Ω·cm-5×10 -1 Ω·cm, and 5×10 -1 Any resistivity range from Ω·cm to 1Ω·cm.

[0113] For example, the resistivity of the first conductive portion 130 may be set to 1×10 -3 Ω·cm、5×10 -3 Ω·cm、1×10 -2 Ω·cm、5×10 -2 Ω·cm、1×10 -1 Ω·cm、5×10 -1 One of Ω·cm and 1Ω·cm.

[0114] The first conductive portion 130 may be provided continuously, or the first conductive portion 130 may be provided discontinuously, and the shape of the first conductive portion 130 may be provided to be a regular shape, for example, the shape of the first conductive portion 130 may be provided to be a long strip or an arc, etc., or the shape of the first conductive portion 130 may be provided to be an irregular shape, and the embodiments of the present application do not impose further restrictions on this.

[0115] In a plane parallel to the first substrate layer 110 , the width of the first conductive portion 130 may be uniformly set, or the width of the first conductive portion 130 may be non-uniformly set. The width of the first conductive portion 130 may be set to be greater than or equal to 0.02 mm and less than or equal to 20 mm.

[0116] The width of the first conductive portion 130 can be set within any width range of 0.02 mm-0.1 mm, 0.1 mm-0.2 mm, 0.2 mm-1 mm, 1 mm-2 mm, 2 mm-3 mm, 3 mm-4 mm, 4 mm-5 mm, 5 mm-6 mm, 6 mm-8 mm, 8 mm-10 mm, 10 mm-12 mm, 12 mm-14 mm, 14 mm-16 mm, 16 mm-18 mm, and 18 mm-20 mm.

[0117] For example, the width of the first conductive portion 130 can be set to one of 0.02 mm, 0.1 mm, 0.2 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm and 20 mm. The embodiments of the present application are not limited to the listed values, and other values ​​not listed in the numerical range are also applicable.

[0118] The thickness of the first conductive portion 130 may be set to be greater than or equal to 1 micron and less than or equal to 200 microns. The thickness of the first conductive portion 130 may be set to be within any thickness range of 1 micron-20 microns, 20 microns-30 microns, 30 microns-40 microns, 40 microns-50 microns, 50 microns-60 microns, 60 microns-70 microns, 70 microns-80 microns, 80 microns-90 microns, 90 microns-100 microns, 100 microns-110 microns, 110 microns-120 microns, 120 microns-130 microns, 130 microns-140 microns, 140 microns-150 microns, 150 microns-160 microns, 160 microns-170 microns, 170 microns-180 microns, 180 microns-190 microns, and 190 microns-200 microns.

[0119] For example, the thickness of the first conductive part 130 can be set within a range of 10 micrometers to 60 micrometers. Exemplarily, the second conductive part 230 is disposed on the conductive surface of the second conductive base layer 200. Specifically, the second conductive part 230 is disposed on the surface of the second conductive layer 220 away from the second base layer 210, and the second conductive part 230 is electrically connected to the second conductive layer 220.

[0120] The resistivity, width, thickness, etc. of the second conductive portion 230 may refer to the first conductive portion 130 , and the details may refer to the above description, which will not be described in detail in the embodiment of the present application.

[0121] In some embodiments of the present application, the first conductive part 130 is disposed in the sealing layer 300 , and the sealing layer 300 at least partially covers the first conductive base layer 100 . And / or, the second conductive part 230 is disposed in the sealing layer 300 , and the sealing layer 300 at least partially covers the second conductive base layer 200 .

[0122] Exemplarily, the first conductive part 130 is disposed in the sealing layer 300, and the sealing layer 300 covers the first conductive part 130 and at least partially covers the first conductive base layer 100; the second conductive part 230 is disposed in the sealing layer 300, and the sealing layer 300 covers the second conductive part 230 and at least partially covers the second conductive base layer 200. This arrangement can enhance the bonding strength between the sealing layer 300 and the first conductive base layer 100, and between the sealing layer 300 and the second conductive base layer 200, avoid separation of the sealing layer 300 from the first conductive base layer 100 or the second conductive base layer 200, and further improve the sealing effect of the sealing layer 300.

[0123] In addition, the first conductive part 130 is arranged in the sealing layer 300, and the second conductive part 230 is arranged in the sealing layer 300. The sealing layer 300 can reduce the possibility of the first conductive part 130 and the second conductive part 230 being exposed to the outside, reduce the possibility of the first conductive part 130 and the second conductive part 230 directly contacting the electrochromic layer 400, and can reduce the possibility of the first conductive part 130 and the second conductive part 230 directly contacting external water and oxygen.

[0124] It should be noted that “covering” may mean that the sealing layer 300 contacts the first conductive part 130 and the first conductive base layer 200. “Covering” may mean that the sealing layer 300 contacts the second conductive part 230 and the second conductive base layer 200.

[0125] In some embodiments of the present application, the projection of the first conductive portion 130 on the plane where the electrochromic layer 400 is located does not overlap at all or partially overlaps with the projection of the second conductive portion 230 on the plane where the electrochromic layer 400 is located.

[0126] Reference Figure 5 , Fig.11 , Fig.12 and Fig.13, the projection of the first conductive part 130 and the projection of the second conductive part 230 may not overlap at all. The first conductive part 130 and the first insulating part 140 extend along the edge of the first conductive substrate layer 100 respectively, the interior of the first conductive substrate layer 100 is the visible area of ​​the electrochromic device, and the orthographic projections of the first conductive part 130 and the first insulating part 140 on the first conductive substrate layer 100 are both located in the non-visible area of ​​the electrochromic device. By setting the projection of the first conductive part 130 to not overlap with the projection of the second conductive part 230, the situation that the first conductive part 140 and the second conductive part 240 contact and cause a short circuit in the electrochromic device is avoided, thereby improving the stability and reliability of the electrochromic device.

[0127] refer to Figure 6 , Fig.14 , Fig.15 and Fig.16 , the first conductive part 130 can partially overlap with the projection of the second conductive part 230. The first conductive part 130 and the first insulating part 140 extend along the edge of the first conductive substrate layer 100 respectively, and the interior of the first conductive substrate layer 100 is the visible area of ​​the electrochromic device. The orthographic projections of the first conductive part 130 and the first insulating part 140 on the first conductive substrate layer 100 are both located in the non-visible area of ​​the electrochromic device. By setting the first conductive part 130 to only partially overlap with the projection of the second conductive part 230, it is avoided that the first conductive part 130 and the second conductive part 230 overlap too much, and the local overlapping area of ​​the electrochromic device is avoided from being overcharged or over-discharged, thereby extending the working life of the device.

[0128] In some embodiments of the present application, a first insulating portion 140 and a second insulating portion 240 are provided in the sealing layer 300 . The first insulating portion 140 is provided on the first conductive substrate layer 100 , and the second insulating portion 240 is provided on the second conductive substrate layer 200 .

[0129] In some embodiments, reference Figure 1 and Figure 2 , the first insulating portion 140 is disposed on the conductive surface of the first conductive substrate layer 100, and the first insulating portion 140 is entirely disposed within the sealing layer 300. In the non-visible region of the electrochromic device, along the direction from the inside to the outside of the electrochromic device, the width of the first insulating portion 140 is smaller than the width of the sealing layer 300. Further, the color-changing material layer 410 is disposed at intervals on the inner side of the first insulating portion 140, and the sealing layer 300 is at least partially filled between the color-changing material layer 410 and the first insulating portion 140.

[0130] In a possible implementation, the first conductive part 130 may be first formed on the conductive surface of the first conductive substrate layer 100, and then the first insulating part 140 may be formed on the conductive surface of the first conductive substrate layer 100. By locating the first insulating part 140 in the sealing layer 300, the sealing layer 300 protects the first insulating part 140, thereby preventing the first insulating part 140 from directly contacting the electrochromic layer 400.

[0131] The material of the first insulating part 140 can be set to insulating glue, or the first insulating part 140 can include one of epoxy resin, vinyl ether resin, acrylate resin, unsaturated resin, polyester, polyolefin and polythiol and a photoinitiator. Those skilled in the art can select the first insulating part 140 to be completely located in the sealing layer 300 or partially located in the sealing layer 300 according to the material of the first insulating part 140.

[0132] The thickness of the first insulating portion 140 may be equal to the thickness of the first conductive portion 130 , or the thickness of the first insulating portion 140 may be greater than the thickness of the first conductive portion 130 .

[0133] The thickness of the first insulating portion 140 may be set to be greater than or equal to 1 micron and less than or equal to 200 microns. For example, the thickness of the first insulating portion 140 may be set within any thickness range of 1 micron-20 microns, 20 microns-30 microns, 30 microns-40 microns, 40 microns-50 microns, 50 microns-60 microns, 60 microns-70 microns, 70 microns-80 microns, 80 microns-90 microns, 90 microns-100 microns, 100 microns-110 microns, 110 microns-120 microns, 120 microns-130 microns, 130 microns-140 microns, 140 microns-150 microns, 150 microns-160 microns, 160 microns-170 microns, 170 microns-180 microns, 180 microns-190 microns, and 190 microns-200 microns.

[0134] In some embodiments, reference Figure 1 and Figure 2 , the second insulating portion 240 is disposed on the conductive surface of the second conductive substrate layer 200, and the second insulating portion 240 is entirely disposed within the sealing layer 300. In the non-visible region of the electrochromic device, along the direction from the inside to the outside of the electrochromic device, the width of the second insulating portion 240 is smaller than the width of the sealing layer 300. Further, the ion storage layer 430 is disposed at intervals on the inner side of the second insulating portion 240, and the sealing layer 300 is at least partially filled between the ion storage layer 430 and the second insulating portion 240.

[0135] In a possible implementation, the second conductive part 230 may be first formed on the conductive surface of the second conductive substrate layer 200, and then the second insulating part 240 may be formed on the conductive surface of the second conductive substrate layer 200. By locating the second insulating part 240 in the sealing layer 300, the sealing layer 300 protects the second insulating part 240, thereby preventing the second insulating part 240 from directly contacting the electrochromic layer 400.

[0136] Exemplarily, the material and thickness of the second insulating portion 240 may refer to the first insulating portion 140 , and the details may refer to the above description, which will not be described in detail in the embodiment of the present application.

[0137] Reference Figure 3 , Figure 3 It is a schematic structural diagram of the visible area, the first conductive portion 130 and the first insulating portion 140 on the first conductive substrate layer 100 provided in an embodiment of the present application.

[0138] The first conductive part 130 and the first insulating part 140 extend along the edge of the first conductive substrate layer 100 respectively, and the interior of the first conductive substrate layer 100 (the area within the dotted line in the figure) is the visible area of ​​the electrochromic device, and the orthographic projections of the first conductive part 130 and the first insulating part 140 on the first conductive substrate layer 100 are both located in the non-visible area of ​​the electrochromic device. The first conductive part 130 and the first insulating part 140 are enclosed together to form a first accommodating space, and at least part of the electrochromic layer 400 (not shown in the figure) is disposed inside the first accommodating space formed by the first conductive part 130 and the first insulating part 140. Exemplarily, a color-changing material layer 410 is disposed inside the first accommodating space, or a color-changing material layer 410 and an ion-conducting layer 420 are disposed.

[0139] In the above embodiment, on the conductive surface of the first conductive substrate layer 100, the first conductive part 130 and the first insulating part 140 enclose a first accommodating space, and the shape of the first accommodating space can be set to a regular shape such as a circle, a polygon, and an ellipse, or the shape of the first accommodating space can also be set to an irregular shape. Wherein, the first conductive part 130 and the first insulating part 140 are both set to have a certain thickness, so in the stacking direction of the thickness of the electrochromic device, the first conductive part 130 and the first insulating part 140 at least surround part of the outer peripheral surface of the electrochromic layer 400.

[0140] refer to Figure 4 , Figure 4 It is a schematic structural diagram of the visible area, the second conductive portion 230 and the second insulating portion 240 on the second conductive substrate layer 200 provided in an embodiment of the present application.

[0141] The second conductive portion 230 and the second insulating portion 240 extend along the edge of the second conductive base layer 200, respectively. The interior of the second conductive base layer 200 (the area within the dotted line in the figure) is the visible area of ​​the electrochromic device. The orthographic projections of the second conductive portion 230 and the second insulating portion 240 on the second conductive base layer 200 are both located in the non-visible area of ​​the electrochromic device. The second conductive portion 230 and the second insulating portion 240 are enclosed together to form a second accommodating space. At least part of the electrochromic layer 400 (not shown in the figure) is disposed inside the second accommodating space formed by the second conductive portion 230 and the second insulating portion 240. Exemplarily, an ion storage layer 430 is disposed inside the second accommodating space, or an ion storage layer 430 and an ion conduction layer 420 are disposed.

[0142] In the above embodiment, on the conductive surface of the second conductive substrate layer 200, the second conductive part 230 and the second insulating part 240 enclose a second accommodating space, and the shape of the second accommodating space can be set to a regular shape such as a circle, a polygon, and an ellipse, or the shape of the second accommodating space can also be set to an irregular shape. Wherein, the second conductive part 230 and the second insulating part 240 are both set to have a certain thickness, so in the stacking direction of the thickness of the electrochromic device, the second conductive part 230 and the second insulating part 240 at least surround part of the outer peripheral surface of the electrochromic layer 400.

[0143] It should be noted that the dotted line in the figure marks the range of the visible area, and the area within the dotted line is the visible area, which is only an example in this embodiment. The specific position range of the visible area is not limited by the position of the dotted line. When the shape of the electrochromic device is irregular, the shape of the visible area can be adjusted accordingly following the outer contour of the electrochromic device, and the electrochromic layer 400 at the visible area can undergo reversible changes in color and transmittance under the action of voltage or current.

[0144] Reference Figure 7 and Figure 8 The first conductive substrate 100 may be provided with a first protection portion 150, and the first protection portion 150 may cover the surface of the first conductive portion 130 away from the first conductive substrate 100. The first protection portion 150 covers the first conductive portion 130 and at least partially covers the first conductive substrate 100. The first protection portion 150 can play a certain role in isolating and protecting the first conductive portion 130, thereby reducing the possibility of chemical reaction of the first conductive portion 130 and improving the stability of the first conductive portion 130.

[0145] Exemplarily, the width of the first protection portion 150 may be greater than the width of the first conductive portion 130 , so that the first protection portion 150 covers the inner surface of the first conductive portion 130 , thereby reducing the possibility of the first conductive portion 130 directly contacting the electrochromic layer 400 .

[0146] Reference Fig. 9 and Fig.10 The second conductive base layer 200 may be provided with a second protective portion 250, and the second protective portion 250 may cover the surface of the second conductive portion 230 away from the second conductive base layer 200. The second protective portion 250 covers the second conductive portion 230 and at least partially covers the second conductive base layer 200. The second protective portion 250 can provide a certain degree of isolation and protection for the second conductive portion 230, thereby reducing the possibility of chemical reaction of the second conductive portion 230 and improving the stability of the second conductive portion 230.

[0147] Exemplarily, the width of the second protection portion 250 may be greater than the width of the second conductive portion 230 , so that the second protection portion 250 covers the inner surface of the second conductive portion 230 , thereby reducing the possibility of the second conductive portion 230 directly contacting the electrochromic layer 400 .

[0148] In some embodiments of the present application, along the thickness direction of the electrochromic device, at least a portion of the first insulating portion 140 is disposed relative to the second conductive portion 230, and the orthographic projection of the first insulating portion 140 on the plane where the electrochromic layer 400 is located at least partially covers the orthographic projection of the second conductive portion 230 on the plane where the electrochromic layer 400 is located; and / or, at least a portion of the second insulating portion 240 is disposed relative to the first conductive portion 130, and the orthographic projection of the second insulating portion 240 on the plane where the electrochromic layer 400 is located at least partially covers the orthographic projection of the first conductive portion 130 on the plane where the electrochromic layer 400 is located.

[0149] In this embodiment, the first insulating part 140 is arranged relative to the second conductive part 230, and the second insulating part 240 is arranged relative to the first conductive part 130. The first insulating part 140 is used to form insulating protection for the second conductive part 240 in the stacking direction, or the second insulating part 240 is used to form insulating protection for the first conductive part 130 in the stacking direction, so as to further avoid contact between the first conductive part 130 and the second conductive part 230, thereby reducing the possibility of short circuit in the electrochromic device.

[0150] Exemplarily, the first conductive portion 130 and the first insulating portion 140 together with the first conductive substrate layer 100 form a first accommodating space having an opening, and the second conductive portion 230 and the second insulating portion 240 together with the second conductive substrate layer 200 form a second accommodating space having an opening. When the first conductive substrate layer 100 and the second conductive substrate layer 200 are pressed together, the opening of the first accommodating space and the opening of the second accommodating space are arranged relative to each other, so that the first accommodating space and the second accommodating space are connected, so as to accommodate the electrochromic layer 400 through the connected first accommodating space and the second accommodating space.

[0151] Continue to refer Figure 1and Figure 2 In some possible embodiments, the sealing layer 300 is disposed between the first conductive substrate layer 100 and the second conductive substrate layer 200, and the surface of the sealing layer 300 facing the first conductive substrate layer 100 is adhered to the first conductive substrate layer 100, and the surface of the sealing layer 300 facing the second conductive substrate layer 200 is adhered to the second conductive substrate layer 200.

[0152] In an embodiment of the present application, the width of the sealing layer 300 extending into the interior of the electrochromic device is less than or equal to 1 mm. For example, the width of the sealing layer 300 extending into the interior of the electrochromic device can be set within any width range of 0.5 mm-0.6 mm, 0.6 mm-0.7 mm, 0.7 mm-0.8 mm, 0.8 mm-0.9 mm, and 0.9 mm-1 mm to reduce the width of the non-visible area 20 of the electrochromic device.

[0153] It should be noted that the water vapor permeation direction of the sealing layer 300 is from the outer surface of the sealing layer 300 in the direction of the thickness of the sealing layer to the surface of the side adjacent to the electrochromic layer. The sealing layer 300 surrounds the periphery of the electrochromic device, which can effectively prevent water vapor from penetrating from the periphery of the electrochromic device, ensure the integrity of the sealing structure of the electrochromic device, improve the sealing performance and waterproof ability of the electrochromic device, and thus extend the service life of the electrochromic device.

[0154] The material of the sealing layer 300 can be set to thermosetting glue, which can be set to one of polyolefins, polyamides, polyesters, ethylene and copolymers thereof, and the volume shrinkage rate of the thermosetting glue is greater than or equal to 0.5% and less than or equal to 2%. The volume shrinkage rate of the thermosetting glue can be set within any shrinkage rate range of 0.5%-0.8%, 0.8%-1%, 1%-1.2%, 1.2%-1.5%, 1.5%-1.8%, and 1.8%-2%.

[0155] Alternatively, the sealing layer 300 may also be configured as a light-curing adhesive, including one of epoxy resin, vinyl ether resin, acrylate resin, unsaturated resin, polyester, polyolefin and polythiol, and a photoinitiator.

[0156] In some embodiments of the present application, the first conductive substrate layer 100 and the second conductive substrate layer 200 are arranged opposite to each other, and the orthographic projection of the first accommodation space formed by the first conductive part 130 and the first insulating part 140 on the electrochromic layer 400 coincides with the orthographic projection of the second accommodation space formed by the second conductive part 230 and the second insulating part 240 on the electrochromic layer. Further, the first accommodation space and the second accommodation space together form an accommodation space for the electrochromic device, and the perimeter of the accommodation space is the same as the perimeter of the first accommodation space, and / or the perimeter of the accommodation space is the same as the perimeter of the second accommodation space.

[0157] In some embodiments of the present application, the electrochromic device is formed with a accommodating space, and on the first conductive substrate layer 100, the first conductive portion 130 and the first insulating portion 140 extend along the edges of the first conductive substrate layer 100, respectively, and the length L2 of the first conductive portion 130 is greater than or equal to 10% of the circumference L1 of the accommodating space, and the length L2 of the first conductive portion 130 is less than or equal to 70% of the circumference L1 of the accommodating space. For example, the length L2 of the first conductive portion 130 can be set within any proportion range of 10%-20%, 20%-30%, 30%-40%, 40%-50%, 50%-60%, and 60%-70% of the circumference L1 of the accommodating space.

[0158] It can be understood that, since the resistivity of the first conductive portion 130 is lower than that of the first conductive layer 120, the first conductive portion 130 is provided to improve the conductive efficiency of the first conductive layer 120. Furthermore, when the length of the first conductive portion 130 is longer, the contact area between the first conductive portion 130 and the first conductive layer 120 is larger, which is beneficial to reduce the surface resistance of the contact surface between the two and accelerate the efficiency of the electrochromic device in responding to the color change.

[0159] In some embodiments of the present application, the electrochromic device is formed with a accommodating space, and on the second conductive substrate layer 200, the second conductive portion 230 and the second insulating portion 240 extend along the edges of the second conductive substrate layer 200, respectively, and the length L3 of the second conductive portion 230 is greater than or equal to 10% of the circumference L1 of the accommodating space, and the length L3 of the second conductive portion 230 is less than or equal to 70% of the circumference L1 of the accommodating space. For example, the length L3 of the second conductive portion 230 can be set within any proportion range of 10%-20%, 20%-30%, 30%-40%, 40%-50%, 50%-60%, and 60%-70% of the circumference L1 of the accommodating space.

[0160] It can be understood that, since the resistivity of the second conductive portion 230 is lower than that of the second conductive layer 220, the second conductive portion 230 is provided to improve the conductive efficiency of the second conductive layer 220. Furthermore, when the length of the second conductive portion 230 is longer, the contact area between the second conductive portion 230 and the second conductive layer 220 is larger, which is beneficial to reduce the surface resistance of the contact surface between the two and accelerate the efficiency of the electrochromic device in responding to the color change.

[0161] In the accommodating space, the total length of the first conductive part 130 and the second conductive part 230 can be greater than or equal to 60% of the circumference L1 of the accommodating space and less than or equal to 100% of the circumference L1 of the accommodating space. The total length of the first conductive part 130 and the second conductive part 230 can be set within any proportion range of 60%-70%, 70%-80%, 80%-90%, and 90%-100% of the circumference L1 of the accommodating space.

[0162] Since the resistivity of the first conductive portion 130 and the second conductive portion 230 is relatively low, providing longer first conductive portion 130 and second conductive portion 230 can increase the color change speed of the electrochromic device.

[0163] In the above embodiment, the first conductive part 130 and the second conductive part 230 can be set at different positions on the outline of the electrochromic device according to actual needs, so that electricity can be conducted to the first conductive layer 120 through the first conductive part 130, and electricity can be conducted to the second conductive layer 220 through the second conductive part 230. Since the direction of electrical conduction is from the first conductive part 130 and the second conductive part 230 to the middle area of ​​the electrochromic device, the electrochromic device can gradually change color from all sides to the middle, making the electrochromic device change color more uniformly, thereby improving the user experience.

[0164] Reference Fig. 20 , Fig.21 and Fig. 22 , exemplarily, the first conductive portion 130 may include at least two first sub-conductive portions 130a, the first insulating portion 140 includes at least two first sub-insulating portions 140a, and the first sub-conductive portions 130a and the first sub-insulating portions 140a are alternately arranged; and / or, the second conductive portion 230 includes at least two second sub-conductive portions 230a, the second insulating portion 240 includes at least two second sub-insulating portions 240a, and the second sub-conductive portions 230a and the second sub-insulating portions 240a are alternately arranged.

[0165] For example, the number of first sub-conductive parts 130a can be set to two, the number of first sub-insulating parts 140a can be set to two, the two first sub-conductive parts 130a and the two first sub-insulating parts 140a are arranged alternately, and the first accommodating space is correspondingly set to a quadrilateral, for example, the first accommodating space can be set to a rectangle or a square, etc.

[0166] It is easy to understand that the first conductive part 130 and the second conductive part 230 can be located in the accommodating space, the number of the second sub-conductive parts 230a can be set to two, the number of the second sub-insulating parts 240a can be set to two, and the two second sub-conductive parts 230a and the two second sub-insulating parts 240a are alternately arranged.

[0167] Along the thickness direction of the electrochromic device, the first sub-conductive portion 130a is arranged opposite to the second sub-insulating portion 240a, and the first sub-insulating portion 140a is arranged opposite to the second sub-conductive portion 230a. By arranging that each part of the first conductive portion is arranged opposite to each part of the second insulating portion, or each part of the first insulating portion is arranged opposite to each part of the second conductive portion, the situation that the first conductive portion contacts the second conductive portion and causes a short circuit in the electrochromic device is further avoided, the stability and reliability of the electrochromic device are improved, and the service life of the device is extended.

[0168] Reference Figure 11-Figure 19 ,in, Figure 11-13 , Figure 14-16 ,as well as Figure 17-Figure 19 Three different implementations are shown respectively.

[0169] Fig.11 , Fig.14 and Fig.17 , which shows different configurations of the first conductive portion 130 and the first insulating portion 140. Fig.12 , Fig.15 and Fig.18 The second conductive part 230 and the second insulating part 240 are arranged in different ways. Fig.13 , Fig.16 and Fig.19 FIG. 4 shows different corresponding ways of the first conductive part 130 and the second conductive part 230 .

[0170] For example, refer to Figure 11-Figure 22The electrochromic device may further include a first extraction electrode 131 and a second extraction electrode 231. The first extraction electrode 131 may be electrically connected to the first conductive portion 130, and the first extraction electrode 131 may extend to the outside of the first conductive substrate layer 100. The second extraction electrode 231 may be electrically connected to the second conductive portion 230, and the second extraction electrode 231 may extend to the outside of the second conductive substrate layer 200. The first conductive portion 130 is electrically connected to an external power source through the first extraction electrode 131, and the second conductive portion 230 is electrically connected to an external power source through the second extraction electrode 231. The wire of the external power source may be connected to the first extraction electrode 131 and the second extraction electrode 231 located outside the electrochromic device by welding, thereby simplifying the production process of the electrochromic device and avoiding damage to the sealing structure of the electrochromic device when connecting the wire of the external power source.

[0171] Specifically, refer to Figure 11-13 The first extraction electrode 131 can be disposed in steps with the first conductive part 130. The first conductive part 130 is first disposed on the first conductive substrate 100, and then the first extraction electrode 131 is disposed on the first conductive part by bonding or welding. The second extraction electrode 231 can be disposed in steps with the second conductive part 230. The second conductive part 230 is first disposed on the second conductive substrate 200, and then the second extraction electrode 231 is disposed on the second conductive part by bonding or welding.

[0172] In some other embodiments, referring to Figure 14-16 The first extraction electrode 131 may be integrally provided with the first conductive portion 130 . The second extraction electrode 231 may be integrally provided with the second conductive portion 230 .

[0173] The first lead-out electrode 131 may be disposed at an end of the first conductive portion 130 , or the first lead-out electrode 131 may also be disposed in the middle of the first conductive portion 130 ; the second lead-out electrode 231 may be disposed at an end of the second conductive portion 230 , or the second lead-out electrode 231 may also be disposed in the middle of the second conductive portion 230 .

[0174] In some embodiments, reference Figure 11-13The orthographic projection of the first conductive portion 230 on the plane where the electrochromic layer is located and the projection of the second conductive portion 230 on the plane where the electrochromic layer 400 is located do not overlap at all. The first lead-out electrode 131 is arranged at the end of the first conductive portion 130, and the second lead-out electrode 231 is arranged at the end of the second conductive portion 230. The first lead-out electrode 131 and the second lead-out electrode 231 are arranged on both sides of the electrochromic device, and the projections of the first lead-out electrode 131 and the second lead-out electrode 231 on the plane where the electrochromic layer 400 is located do not overlap. The first lead-out electrode 131 and the second lead-out electrode 231 are respectively connected to the first external terminal and the second external terminal of an external power supply.

[0175] In other embodiments, reference Figure 14-16 The orthographic projection of the first conductive portion 230 on the plane where the electrochromic layer is located partially overlaps with the orthographic projection of the second conductive portion 230 on the plane where the electrochromic layer 400 is located, the first lead-out electrode 131 is arranged at the end of the first conductive portion 130, and the second lead-out electrode 231 is arranged at the end of the second conductive portion 230. The first lead-out electrode 131 and the second lead-out electrode 231 are arranged on the same side of the electrochromic device, and the projections of the first lead-out electrode 131 and the second lead-out electrode 231 on the plane where the electrochromic layer 400 is located do not overlap, and the first lead-out electrode 131 and the second lead-out electrode 231 are respectively connected to the first external terminal and the second external terminal of an external power supply.

[0176] In some other embodiments, reference Figure 17-Figure 19 The orthographic projection of the first conductive part 130 on the plane where the electrochromic layer is located and the orthographic projection of the second conductive part 230 on the plane where the electrochromic layer is located do not overlap at all. By leading the first lead-out electrode 131 and the second lead-out electrode 231 from the same side of the electrochromic device, it is convenient to connect the external power supply to the electrochromic device from the same side, which simplifies the connection process between the lead-out electrode and the external power supply and improves the user experience of the electrochromic device.

[0177] Exemplarily, in a plane parallel to the electrochromic layer 400, the ends of the first conductive portion 130 and the second conductive portion 230 that are close to each other are spaced apart, and the distance between the ends of the first conductive portion 130 and the second conductive portion 230 that are close to each other is less than or equal to 1 mm, so that when lead-out electrodes are set at the ends of the first conductive portion 130 and the ends of the second conductive portion 230, the two lead-out electrodes can be set closer, reducing the distance between the two lead-out electrodes, reducing the difficulty of device processing, and improving production efficiency.

[0178] For example, the distance between the ends where the orthographic projection of the first conductive portion 130 on the electrochromic layer 400 and the orthographic projection of the second conductive portion 230 on the electrochromic layer 400 are close to each other can be set within any distance range of 0.5 mm-0.6 mm, 0.6 mm-0.7 mm, 0.7 mm-0.8 mm, 0.8 mm-0.9 mm, and 0.9 mm-1 mm.

[0179] For further reference, Figure 20-22 The first conductive portion 130 may include at least two first sub-conductive portions 130a, the first insulating portion 140 includes at least two first sub-insulating portions 140a, and the plurality of first lead-out electrodes 131 are respectively arranged on the two first sub-conductive portions 130a; and / or the second conductive portion 230 includes at least two second sub-conductive portions 230a, the second insulating portion 240 includes at least two second sub-insulating portions 240a, and the plurality of second lead-out electrodes 231 are respectively arranged on the two second sub-conductive portions 230a.

[0180] It is understandable that when the size of the electrochromic device is large, the length of the first conductive part 130 and the second conductive part 230 is long, which may cause a large voltage drop on the first conductive part 130 and the second conductive part 230, and the impact on the color change process may be more obvious. Then, the electrochromic device can be powered by uniformly arranging multiple first sub-conductive parts 130a and corresponding first lead-out electrodes 131, and multiple second sub-conductive parts 230a and corresponding second lead-out electrodes 231, thereby reducing the voltage loss on the first conductive part 130 or the second conductive part 230.

[0181] It should be noted that when the first conductive part 130 or the second conductive part 230 has only one sub-conductive part, multiple first extraction electrodes 131 can be provided on the first conductive part 130 or multiple second extraction electrodes 231 can be provided on the second conductive part 230 according to the color change requirements of the electrochromic device. The first extraction electrode 131 can be provided in the middle section of the first conductive part 130 or at the end of the first conductive part 130; and / or, the second extraction electrode 231 can be provided in the middle section of the second conductive part 230 or at the end of the second conductive part 230. The projection of the first extraction electrode 131 on the plane where the electrochromic layer 400 is located and the projection of the second extraction electrode 132 on the plane where the electrochromic layer 400 is located do not overlap.

[0182] In the above embodiment, the first extraction electrode 131 and the second extraction electrode 231 can be a flexible printed circuit (FPC) that is resistant to bending, which is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as a substrate. The first external connection terminal and the second external connection terminal can be positive and negative power lines of an external power source, and the positive and negative power lines can be electrically connected to the first extraction electrode and the second extraction electrode respectively by welding or buckling to achieve a stable electrical connection.

[0183] In the electrochromic device provided by the embodiment of the present application, the first conductive substrate layer 100, the sealing layer 300 and the second conductive substrate layer 200 are sequentially arranged along the thickness direction of the electrochromic device, and the sealing layer 300 is arranged between the first conductive substrate layer 100 and the second conductive substrate layer 200. The orthographic projection of the sealing layer 300 on the plane where the electrochromic layer 400 is located at least partially overlaps with the orthographic projection of the first conductive part 130 on the plane where the electrochromic layer 400 is located; and / or, the orthographic projection of the sealing layer 300 on the plane where the electrochromic layer 400 is located at least partially overlaps with the orthographic projection of the second conductive part 230 on the plane where the electrochromic layer 400 is located, thereby reducing the width of the non-visible area 20 of the electrochromic device and improving the applicability of the electrochromic device.

[0184] Reference Fig.23 and Fig.24 The second aspect of the embodiment of the present application provides a color-changing device, including the above-mentioned electrochromic device and a substrate 500, wherein the substrate 500 is arranged on the side of the first conductive substrate layer 100 away from the electrochromic layer 400; or, the substrate 500 is arranged on the side of the second conductive substrate layer 200 away from the electrochromic layer 400, and the substrate 500 is made of a transparent material.

[0185] Exemplarily, the color-changing device may further include a shielding layer 600 , which is disposed at an edge portion of the substrate 500 , and the orthographic projection of the sealing layer 300 on the substrate 500 completely falls on the shielding layer 600 .

[0186] The shielding layer 600 is arranged on the substrate 500, and the shielding layer 600 at least covers the sealing layer 300. The shielding layer 600 is correspondingly arranged in the non-visible area 20 of the electrochromic device to shield the sealing layer 300, the first conductive part 130, and the second conductive part 230 through the shielding layer 600; the electrochromic device provided in the embodiment of the present application reduces the width of the non-visible area 20, thereby being able to reduce the width of the shielding layer 600, reduce the area of ​​the color-changing device, and improve the applicability of the electrochromic device.

[0187] The third aspect of the embodiment of the present application provides a terminal product, including the above-mentioned electrochromic device or the above-mentioned color-changing device, wherein the terminal product includes any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a vehicle, and a display panel. In this embodiment, since the above-mentioned electrochromic device or color-changing device is used, all the advantages of the above-mentioned color-changing electrochromic device and color-changing device are possessed.

[0188] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0189] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0190] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electrochromic device, characterized in that: The invention comprises an electrochromic layer and a first conductive substrate layer and a second conductive substrate layer respectively arranged on both sides of the electrochromic layer; the first conductive substrate layer is provided with a first conductive part, the second conductive substrate layer is provided with a second conductive part, and a sealing layer is provided between the first conductive substrate layer and the second conductive substrate layer; wherein, The orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially overlaps with the orthographic projection of the first conductive portion on the plane where the electrochromic layer is located; and / or, The orthographic projection of the sealing layer on the plane where the electrochromic layer is located at least partially overlaps with the orthographic projection of the second conductive portion on the plane where the electrochromic layer is located.

2. The electrochromic device according to claim 1, characterized in that: The first conductive part is disposed in the sealing layer, and the sealing layer at least partially covers the first conductive base layer; and / or the second conductive part is disposed in the sealing layer, and the sealing layer at least partially covers the second conductive base layer.

3. The electrochromic device according to claim 1, characterized in that: The projection of the first conductive portion on the plane where the electrochromic layer is located and the projection of the second conductive portion on the plane where the electrochromic layer is located do not overlap at all or overlap partially.

4. The electrochromic device according to claim 1, characterized in that: A first insulating portion and a second insulating portion are further provided in the sealing layer. The first insulating portion is provided on the first conductive base layer, and the second insulating portion is provided on the second conductive base layer.

5. The electrochromic device according to claim 4, characterized in that: The first conductive portion and the first insulating portion enclose a first accommodating space, and the first conductive portion and the first insulating portion at least surround a portion of the outer circumference of the electrochromic layer; and / or, The second conductive portion and the second insulating portion enclose a second accommodating space, and the second conductive portion and the second insulating portion at least surround a portion of the outer circumference of the electrochromic layer.

6. The electrochromic device according to claim 4 or 5, characterized in that: The orthographic projection of the first insulating portion on the plane where the electrochromic layer is located at least partially covers the orthographic projection of the second conductive portion on the plane where the electrochromic layer is located; And / or, the orthographic projection of the second insulating portion on the plane where the electrochromic layer is located at least partially covers the orthographic projection of the first conductive portion on the plane where the electrochromic layer is located.

7. The electrochromic device according to claim 1, characterized in that: The width of the sealing layer extending into the electrochromic device is less than or equal to 1 mm.

8. The electrochromic device according to claim 1, characterized in that: The electrochromic device is formed with a containing space, the perimeter of the containing space is L1; the length of the first conductive portion is L2, and the ratio of L2 to L1 is in the range of 0.1 to 0.7; and / or, The electrochromic device is formed with an accommodating space, the length of the second conductive portion is L3, and the ratio of L3 to L1 is in the range of 0.1 to 0.

7.

9. The electrochromic device according to claim 8, characterized in that: In the accommodating space, a ratio of a total length of the first conductive portion and the second conductive portion in the accommodating space to a perimeter L1 of the accommodating space is in a range of 0.6 to 1.

10. The electrochromic device according to claim 4, characterized in that: The first conductive portion includes at least two first sub-conductive portions, the first insulating portion includes at least two first sub-insulating portions, and the first sub-conductive portions and the first sub-insulating portions are alternately arranged; and / or, The second conductive portion includes at least two second sub-conductive portions, the second insulating portion includes at least two second sub-insulating portions, and the second sub-conductive portions and the second sub-insulating portions are alternately arranged.

11. The electrochromic device according to claim 1, characterized in that: Also includes a first lead-out electrode and a second lead-out electrode, the first lead-out electrode is electrically connected to the first conductive portion, and the second lead-out electrode is electrically connected to the second conductive portion; The projection of the first extraction electrode on the plane where the electrochromic layer is located does not overlap with the projection of the second extraction electrode on the plane where the electrochromic layer is located.

12. The electrochromic device according to claim 1, characterized in that: The distance between the ends where the orthographic projection of the first conductive portion on the electrochromic layer and the orthographic projection of the second conductive portion on the electrochromic layer are close to each other is less than or equal to 1 mm.

13. The electrochromic device according to claim 1, characterized in that: A first protection portion is disposed on the first conductive base layer, the first protection portion covers a surface of the first conductive portion away from the first conductive base layer, and the first protection portion at least partially covers the first conductive base layer; And / or, a second protecting portion is disposed on the second conductive base layer, the second protecting portion covers a surface of the second conductive portion facing away from the second conductive base layer, and the second protecting portion at least partially covers the second conductive base layer.

14. A color changing device, characterized in that: It comprises the electrochromic device and substrate as described in any one of claims 1 to 13, wherein the substrate is arranged on the side of the first conductive substrate layer away from the electrochromic layer; or, the substrate is arranged on the side of the second conductive substrate layer away from the electrochromic layer; and the substrates are both made of transparent materials.

15. The color changing device according to claim 14, characterized in that: It comprises a shielding layer, which is arranged at the edge of the substrate, and the orthographic projection of the sealing layer on the substrate completely falls on the shielding layer.

16. A terminal product, characterized in that: It comprises the electrochromic device according to any one of claims 1 to 13 or the color-changing device according to claim 14 or 15, 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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