Electrochromic device, electrochromic device and terminal product

Abstract

The utility model relates to the technical field of electrochromism, in particular to an electrochromism device, an electrochromism device and a terminal product. A first conductive layer comprises a first conductive region and a second conductive region which are insulated from each other; the second conductive layer is arranged on one side of the first conductive layer, and the second conductive layer is electrically connected with the first conductive region; the electrochromic layer group is positioned between the second conductive region and the second conductive layer; wherein a part of the surface of the first conductive region and a part of the surface of the second conductive region facing the same direction are electrically connected with a positive electrode and a negative electrode of an external power supply respectively. Since the first conductive region and the second conductive region are insulated from each other and the first conductive region is electrically connected with the second conductive layer, the extraction electrodes can be arranged on the same side of the first conductive region and the second conductive region, and the extraction electrodes do not need to be respectively extracted from the two sides. The technical problem that electrodes need to be led out from the two sides in the prior art is solved, and the electrochromic device has the advantages that the electric connection mode of the electrochromic device is simplified, and the production process is conveniently simplified.

Description

Technical Field

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

[0002] Electrochromism is a phenomenon in which 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 as reversible changes in color and transparency. In recent years, electrochromism technology has been widely used in products such as vehicle rearview mirrors, vehicle sunroofs, side windows, building curtain walls, door and window systems, and display devices.

[0003] In the related art, the electrochromic device includes two conductive substrates and an electrochromic layer group arranged between the two conductive substrates. When the electrochromic device is to lead out electrodes, a groove needs to be opened in the conductive substrates on both sides of the thickness direction of the electrochromic device when setting the lead-out structure. The groove runs through the substrate and the conductive layer on the conductive substrate on the current side and exposes the conductive layer on the conductive substrate on the opposite side at the groove. Since the notches of the grooves on the two conductive substrates face opposite directions, electrodes need to be led out on both sides of the electrochromic device, which makes the electrical connection method of the electrochromic device more complicated. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an electrochromic device, an electrochromic apparatus and a terminal product. The electrochromic device can lead out electrodes on one side to solve the problem of complex electrical connection methods of electrochromic devices in related technologies.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the first aspect of the embodiment of the present application is: an electrochromic device, including a first conductive layer, a second conductive layer and an electrochromic layer group.

[0006] The first conductive layer includes a first conductive area and a second conductive area insulated from each other; the second conductive layer is arranged on one side of the first conductive layer, and the second conductive layer is electrically connected to the first conductive area; the electrochromic layer group is located between the second conductive area and the second conductive layer; wherein a partial surface of the first conductive area and a partial surface of the second conductive area facing the same direction are respectively used for electrical connection with the positive and negative electrodes of an external power supply.

[0007] The electrochromic device provided by the present application has the following beneficial effects: since the first conductive area and the second conductive area are arranged along the plane where the first conductive layer is located, and the first conductive area and the second conductive area are insulated from each other, and the first conductive area and the second conductive layer are electrically connected, therefore, the lead-out electrode can be arranged on the same side of the first conductive area and the second conductive area, and on the surface facing the same direction, without having to lead out on both sides. This solves the technical problem of the prior art that the electrodes need to be led out on both sides, and has the advantages of simplifying the electrical connection method of the electrochromic device, facilitating production and simplifying the production process, etc.

[0008] In some embodiments, the electrochromic device further includes a conductive layer, and the first conductive region, the conductive layer, and the second conductive layer are stacked.

[0009] In some embodiments, a distance between the first conductive region and the second conductive layer is H, the conductive layer includes conductive particles, a particle size of the conductive particles is D, and H≤D.

[0010] In some embodiments, H<D-2um, or, H<D / 2.

[0011] In some embodiments, the electrochromic layer group includes a first base material layer, an electro-optical medium layer, and a second base material layer. The first base material layer, the electro-optical medium layer, and the second base material layer are stacked in the distribution direction of the first conductive layer and the second conductive layer, and the thickness of the electro-optical medium layer is L, where L>D.

[0012] In some embodiments, L≥2D, or, L≥D+2um.

[0013] In some embodiments, the value range of D is 7um-100um.

[0014] In some embodiments, the first conductive region includes a first basic conductive layer and a first bus layer which are stacked, and the first bus layer is located between the first basic conductive layer and the second conductive layer, and the first bus layer is electrically connected to the second conductive layer;

[0015] And / or, the second conductive layer includes a second bus layer and a second basic conductive layer which are stacked, and the second bus layer is located between the second basic conductive layer and the first conductive area, and the second bus layer is electrically connected to the first conductive area.

[0016] In some embodiments, a conduction groove is provided on the electrochromic device, and the conduction groove at least penetrates the second conductive layer and the conductive layer to expose a portion of the first conductive area and a portion of the second conductive area, and the exposed portion of the first conductive area and a portion of the second conductive area are used to be electrically connected to the positive and negative electrodes of an external power supply through the conduction groove, respectively.

[0017] In some embodiments, the electrochromic device also includes a seal, and a sealing groove is provided on the electrochromic device, and the sealing groove at least penetrates the second conductive layer and the electrochromic layer group, and the seal is accommodated in the sealing groove, and the seal, the second conductive layer and the second conductive area are enclosed to form a closed space to seal the electrochromic layer group located in the closed space.

[0018] In some embodiments, the conducting groove partially overlaps with the sealing groove, and the exposed portion of the first conductive region and the exposed portion of the second conductive region extend away from the sealing groove.

[0019] In some embodiments, the electrochromic device further comprises a first lead-out structure and a second lead-out structure;

[0020] The first lead-out structure is electrically connected to the first conductive area, and the first lead-out structure is used to be electrically connected to one of the positive electrode and the negative electrode of the external power source;

[0021] The second lead-out structure is electrically connected to the second conductive area; the second lead-out structure is used to be electrically connected to the other of the positive electrode and the negative electrode of the external power source.

[0022] In some embodiments, the electrochromic device further includes a carrier plate, and the first lead-out structure and the second lead-out structure are disposed on the same surface of the carrier plate.

[0023] To achieve the above-mentioned purpose, the technical solution adopted in the second embodiment of the present application is: an electrochromic device, comprising a substrate layer and the electrochromic device of the above-mentioned first embodiment.

[0024] The substrate layer is located on a side of the second conductive layer facing away from the first conductive layer; and / or the substrate layer is located on a side of the first conductive layer facing away from the second conductive layer.

[0025] The electrochromic device provided in the present application has the beneficial effect that, by applying the electrochromic device of the first aspect embodiment described above to an electrochromic device, the electrode of the electrochromic device can be led out on one side to simplify the electrical connection method of the electrochromic device.

[0026] To achieve the above-mentioned purpose, the technical solution adopted in the third aspect embodiment of the present application is: a terminal product, including the electrochromic device of the above-mentioned first aspect embodiment or the electrochromic device of the above-mentioned second aspect embodiment, 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.

[0027] The beneficial effect of the terminal product provided by the present application is that by applying the electrochromic device of the first embodiment or the electrochromic device of the second embodiment to the terminal product, the electrical connection method of the terminal product can be simplified, and all the advantages of the above-mentioned electrochromic device can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 is a schematic structural diagram of an electrochromic device in one of the embodiments of the present application;

[0030] Figure 2 is a schematic structural diagram of an electrochromic device in one of the embodiments of the present application;

[0031] Figure 3 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0032] Figure 4 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0033] Figure 5 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0034] Figure 6 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0035] Figure 7 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0036] Figure 8 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0037] Fig. 9is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0038] Fig.10 is a schematic diagram of a cross-sectional structure of an electrochromic device in one of the embodiments of the present application;

[0039] Fig.11 It is a schematic diagram of the cross-sectional structure of an electrochromic device in one of the embodiments of the present application.

[0040] Reference numerals:

[0041] 1. first conductive layer; 11. first conductive region; 111. first basic conductive layer; 112. first bus layer; 113. first exposed surface; 114. first electrical connection surface; 12. second conductive region; 121. second exposed surface; 122. first electrode surface;

[0042] 2. second conductive layer; 21. second basic conductive layer; 22. second bus layer; 23. second electrical connection surface; 24. second electrode surface;

[0043] 3. Conductive layer; 31. Conductive particles;

[0044] 4. first base; 5. second base;

[0045] 6. Electrochromic layer group; 61. First base material layer; 62. Electro-optical medium layer; 63. Second base material layer;

[0046] 7. Conducting groove;

[0047] 8. Seals;

[0048] 9. First lead-out structure; 10. Second lead-out structure. DETAILED DESCRIPTION

[0049] 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.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] References to "one embodiment", "some embodiments" or "an embodiment" described in the specification of this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some other embodiments", "in some other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0053] Electrochromism is a phenomenon in which 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 as reversible changes in color and transparency. In recent years, electrochromism technology has been widely used in products such as vehicle rearview mirrors, vehicle sunroofs, side windows, building curtain walls, door and window systems, and display devices.

[0054] In the related art, the electrochromic device includes two conductive substrates and an electrochromic layer group arranged between the two conductive substrates. When the electrochromic device is electrode-leading, a groove needs to be opened in the conductive substrates on both sides of the thickness direction of the electrochromic device when setting the lead-out structure. The groove runs through the substrate and the conductive layer on the conductive substrate on the current side and exposes the conductive layer on the conductive substrate on the opposite side at the groove. Since the notches of the grooves on the two conductive substrates face opposite directions, electrodes need to be led out on both sides of the electrochromic device, that is, the conductive areas on the two conductive layers need to be electrically connected to the external power supply through two FPCs (Flexible Printed Circuits), which makes the electrical connection method of the electrochromic device more complicated.

[0055] In view of the above problems, the embodiments of the present application provide an electrochromic device, an electrochromic apparatus and a terminal product. The electrochromic device can lead out electrodes on one side to solve the problem of complex electrical connection methods of electrochromic devices in related technologies.

[0056] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0057] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 An embodiment of the present application provides an electrochromic device, including a first conductive layer 1, a second conductive layer 2 and an electrochromic layer group 6.

[0058] The first conductive layer 1 includes a first conductive area 11 and a second conductive area 12 which are insulated from each other; the area of ​​the second conductive area 12 is larger than that of the first conductive area 11, and the area of ​​the second conductive area 12 is larger than twice that of the first conductive area 11. The first conductive area 11 and the second conductive area 12 are independently insulated from each other by at least one etching line. The second conductive layer 2 is arranged on one side of the thickness direction of the first conductive layer 1 itself, and the second conductive area 12 and the second conductive layer 2 are electrically insulated. The second conductive layer 2 is electrically connected to the first conductive area 11; the electrochromic layer group 6 is located between the first conductive layer 1 and the second conductive layer 2; wherein, a part of the surface of the first conductive area 11 and a part of the surface of the second conductive area 12 facing the same direction are respectively used to electrically connect to the positive and negative electrodes of an external power source.

[0059] In the electrochromic device provided by the present application, the first conductive area 11 and the second conductive area 12 are electrically insulated, and the first conductive area 11 and the second conductive layer 2 are electrically connected, so that the first conductive layer 1 and the second conductive layer 2 can be electrically led to the same side of the electrochromic device, and therefore, the lead-out electrode can be arranged on the same side of the first conductive area 11 and the second conductive area 12, and it is not necessary to lead out on both sides. The technical problem of the prior art that electrodes need to be led out on both sides is solved, and the advantages of simplifying the electrical connection method of the electrochromic device, facilitating production and simplifying the production process are provided.

[0060] Please refer to Fig.11 It should be noted that the first conductive layer 1 and the second conductive layer 2 are both ITO (Indium-TinOxide, indium tin oxide) conductive films, and the first conductive layer 1 and the second conductive layer 2 are soft in texture and cannot exist alone. Generally, the first conductive layer 1 and the second conductive layer 2 are both arranged on a substrate, and the substrate is used to carry and protect the first conductive layer 1 and the second conductive layer 2, and facilitate the transportation and storage of the first conductive layer 1 and the second conductive layer 2. Therefore, the electrochromic device of the embodiment of the present application also includes a first substrate 4 and a second substrate 5; the first conductive layer 1 is arranged on the first substrate 4, and the first conductive layer 1 and the first substrate 4 are combined to form a first conductive substrate; the second conductive layer 2 is arranged on the second substrate 5, and the second conductive layer 2 and the second substrate are combined to form a second conductive substrate.

[0061] Generally, the substrate is PET (Polyethylene terephthalate) board, PC, etc.

[0062] Specifically, the first conductive region 11 and the second conductive region 12 are arranged on the same surface of the first substrate 4 .

[0063] Specifically, one of the partial surface of the first conductive region 11 and the partial surface of the second conductive region 12 is used to be electrically connected to the positive electrode of the external power source, and the other is used to be electrically connected to the negative electrode of the external power source.

[0064] It should be noted that the first conductive layer 1, the second conductive layer 2 and the electrochromic layer group 6 are stacked, and the electrochromic layer group 6 is located between the first conductive layer 1 and the second conductive layer 2. The direction in which the first conductive layer 1, the second conductive layer 2 and the electrochromic layer group 6 are stacked is parallel to the thickness direction of the first conductive layer 1 and the second conductive layer 2.

[0065] Please refer to Figure 3 and Figure 4 The direction in which the first conductive layer 1, the second conductive layer 2 and the electrochromic layer group 6 are stacked is parallel to the X direction in the figure.

[0066] Optionally, the electrical connection method between the second conductive layer 2 and the first conductive area 11 can be to set a conductive object between the first conductive layer 1 and the second conductive layer 2, and the two ends of the conductive object are electrically connected to the first conductive area 11 and the second conductive layer 2 respectively, so that the electricity of the second conductive layer 2 is led to the first conductive area 11, and the first conductive area 11 and the second conductive layer 2 can be electrically connected to each other. Specifically, the two ends of the conductive object can be respectively contacted with the first conductive area 11 and the second conductive layer 2 by welding, bonding, etc.

[0067] Optionally, in other embodiments of the present application, please refer to Figure 3 and Figure 4 The electrical connection between the second conductive layer 2 and the first conductive area 11 can be that a conductive layer 3 is provided between the first conductive layer 1 and the second conductive layer 2, and the conductive layer 3 is electrically connected to the first conductive area 11 and the second conductive layer 2 respectively.

[0068] In some embodiments, the first conductive region 11 , the conductive layer 3 , and the second conductive layer 2 are stacked in sequence.

[0069] On the one hand, the conductive layer 3 is provided to conduct electricity between the second conductive layer 2 and the first conductive area 11; on the other hand, the layer structure of the conductive layer 3 plays a role of spacing and support, spacing the second conductive layer 2 and the second conductive area 12 to avoid short circuit caused by contact between the second conductive layer 2 and the second conductive area 12. The conductive layer 3 supports the first conductive area 11 and part of the second conductive layer 2, making the structure of the entire device more stable.

[0070] In some embodiments, the distance between the first conductive region 11 and the second conductive layer 2 is H, the conduction layer 3 includes conductive particles 31, the particle size of the conductive particles 31 is D, and H ≤ D.

[0071] By the above setting, defining the relationship between the particle size of the conductive particles 31 in the conduction layer 3 and the distance between the first conductive region 11 and the second conductive layer 2 can enable the conductive particles 31 in the conduction layer 3 to respectively contact the surfaces of the first conductive region 11 and the second conductive layer 2, so that the first conductive region 11 and the second conductive layer 2 are electrically connected.

[0072] Specifically, the conduction layer 3 is formed by curing a solution composed of conductive particles 31 and an insulating material.

[0073] Optionally, the insulating material can be various types of glue solutions such as acrylic resin systems, epoxy resin systems, silicone systems, etc.; or the insulating material is an electro-optic medium solution, such as an electrolyte solution.

[0074] It should be noted that the conductive particles 31 are conductive spheres, and the conductive particles 31 can be pure metal spheres made of good conductor metals such as gold, silver, nickel, copper or their alloys, or spheres with a plastic core and a metal outer layer.

[0075] It should be noted that the conductive particles 31 can respectively contact two objects with a distance less than the particle size of the conductive particles 31. When the conductive particles 31 respectively contact the two objects, the two objects can be electrically connected to each other through the conductive particles 31, that is, the conduction layer 3 can conduct two objects with a distance less than the particle size of the conductive particles 31, and will not conduct two objects with a distance greater than the particle size of the conductive particles 31.

[0076] Therefore, in the present application, since the distance between the first conductive region 11 and the second conductive layer 2 is less than or equal to the particle size of the conductive particles 31, the conductive particles 31 in the conduction layer 3 can respectively contact the first conductive region 11 and the second conductive layer 2, so that the conduction layer 3 can conduct the first conductive region 11 and the second conductive layer 2.

[0077] It should be noted that in order to ensure the stability of the electrical connection relationship between the first conductive region 11 and the second conductive layer 2, the distance between the first conductive region 11 and the second conductive layer 2 can be further reduced to increase the contact area between the conductive particles 31 and the first conductive region 11 and between the conductive particles 31 and the second conductive layer 2.

[0078] Optionally, H < D - 2um, or, H < D / 2.

[0079] The proportional relationship between the particle size of the conductive particles 31 and the gap between the first conductive region 11 and the second conductive layer 2 needs to be maintained within an appropriate range. Generally speaking, the gap between the first conductive region 11 and the second conductive layer 2 is smaller than half the particle size of the conductive particles 31, or smaller than a preset value (for example, the particle size of the conductive particles 31 -2um), so that the conductive particles 31 can effectively conduct the first conductive region 11 and the second conductive layer 2, and can also prevent the conductive particles 31 from being too large and penetrating the second conductive layer 2 and the first conductive region 11, thereby affecting the conductive performance.

[0080] In some embodiments, D=7um-100um.

[0081] Please refer to Figure 3 and Figure 4 In some embodiments, the electrochromic layer group 6 includes a first base material layer 61, an electro-optical medium layer 62 and a second base material layer 63. The first base material layer 61 is arranged on the surface of the first conductive layer 1, the second base material layer 63 is arranged on the surface of the second conductive layer 2, the electro-optical medium layer 62 is arranged between the first base material layer 61 and the second base material layer 63, the first base material layer 61, the electro-optical medium layer 62 and the second base material layer 63 are stacked in the distribution direction of the first conductive layer 1 and the second conductive layer 2, and the thickness of the electro-optical medium layer 62 is L, where L>D. The thickness of the electro-optical medium layer 62 is L, and the distance between the first base material layer 61 and the second base material layer 63 is L. When the conductive layer 3 is extended between the first base material layer 61 and the second base material layer 63, the conductive layer 3 will not conduct the first base material layer 61 and the second base material layer 63. That is, when there is a preparation error, if the conductive layer 3 is accidentally set between the second conductive area 12 and the second conductive layer 2, a short circuit between the second conductive area 12 and the second conductive layer 2 will not be caused, thereby improving the yield of the device.

[0082] The first base material layer 61 is one of the electrochromic layer and the ion storage layer, and the second base material layer 63 is the other of the electrochromic layer and the ion storage layer.

[0083] It should be noted that in some embodiments of the present application, in actual production, the electro-optical medium layer 62 and the conductive layer 3 are formed by curing the same material, and the electro-optical medium layer 62 and the conductive layer 3 can be integrally formed in the process of manufacturing the electrochromic device. It should be noted that the conductive layer 3 can conduct the second conductive layer 2 and the first conductive area 11, while the electro-optical medium layer 62 will not conduct the second conductive area 12 and the second conductive layer 2.

[0084] Specifically, in the process of manufacturing the electrochromic device of the embodiment of the present application, the first base material layer 61 is first set on the second conductive area 12, and the second base material layer 63 is set on the second conductive layer 2, and then the first conductive layer 1 and the second conductive layer 2 are arranged relative to each other; thereafter, the conductive particles 31 are mixed in the electro-optical medium solution, and the electro-optical medium solution mixed with the conductive particles 31 is set between the first conductive layer 1 and the second conductive layer 2. After the electro-optical medium solution mixed with the conductive particles 31 is solidified, a conductive layer 3 can be formed between the first conductive area 11 and the second conductive layer 2, and an electro-optical medium layer 62 can be formed between the first base material layer 61 and the second base material layer 63. The electro-optical medium layer 62 and the conductive layer 3 are formed as one piece.

[0085] The above method only needs to set a solution between the first conductive layer 1 and the second conductive layer 2, which can simplify the production process. And by adjusting the particle size of different conductive particles 31 in one solution, it can be achieved that the first conductive area 11 and the second conductive layer 2 are connected, while the second conductive area 12 and the second conductive layer 2 are not connected.

[0086] It is worth noting that in the embodiment of the present application, the distance between the first base material layer 61 and the second base material layer 63 is controlled to be larger than the particle size of the conductive particles 31 to meet the requirement that the electro-optical medium layer 62 will not conduct the second conductive area 12 and the second conductive layer 2. Therefore, L>D is required.

[0087] In some other embodiments of the present application, L≥2D, or L≥D+2um.

[0088] In one embodiment, L=30um, D is 4um-15um, and H is 2um-13um.

[0089] In some embodiments, in actual production, the electro-optical medium layer 62 and the conductive layer 3 may be made of different materials and formed in different steps. For example, the electro-optical medium layer 82 may be made of electrolyte material, while the conductive layer 3 may be made of insulating material mixed with conductive particles 31 .

[0090] Specifically, in the process of manufacturing the electrochromic device of the embodiment of the present application, the first base material layer 61 is first arranged on the second conductive area 12, and the second base material layer 63 is arranged on the second conductive layer 2, and then the first conductive layer 1 and the second conductive layer 2 are arranged relative to each other; then, an electrolyte solution not containing conductive particles 31 is arranged between the first base material layer 61 and the second base material layer 63, and a glue containing conductive particles 31 is arranged between the first conductive area 11 and the second conductive layer 2; after the electrolyte solution and the glue containing conductive particles 31 are cured, a conductive layer 3 (a colloid containing conductive particles 31) can be formed between the first conductive area 11 and the second conductive layer 2, and an electro-optical medium layer 62 (electrolyte layer) can be formed between the first base material layer 61 and the second base material layer 63.

[0091] It should be noted that by reducing the distance between the first conductive layer 1 and the second conductive layer 2, the distance between the first conductive area 11 and the second conductive layer 2 can be further reduced, thereby ensuring the stability of the electrical connection relationship between the first conductive area 11 and the second conductive layer 2. However, if the distance between the first conductive layer 1 and the second conductive layer 2 is too small, the electrochromic layer group 6 disposed between the first conductive layer 1 and the second conductive layer 2 will be thinner, thereby affecting the color change effect of the electrochromic device.

[0092] To solve the above problems, please refer to Figure 7 and Figure 8 , a first bus layer 112 may be provided on the surface of the first conductive layer 1 close to the second conductive layer 2; or, please refer to Figure 5 and Figure 6 , a second bus layer 22 may be provided on the surface of the second conductive layer 2 close to the first conductive region 11; or, please refer to Figure 3 and Figure 4 A first bus layer 112 can be provided on the surface of the first conductive layer 1 close to the second conductive layer 2, and a second bus layer 22 can be provided on the surface of the second conductive layer 2 close to the first conductive area 11, so as to reduce the distance between the first conductive area 11 and the second conductive layer 2 while ensuring that the distance between the first conductive layer 1 and the second conductive layer 2 is not too small, and ensure that the conductive layer 3 does not conduct electricity between the second conductive layer 2 and the second conductive area 12.

[0093] Therefore, please refer to Figures 3 to 8 In some embodiments, the first conductive region 11 includes a first basic conductive layer 111 and a first bus layer 112 which are stacked, and the first bus layer 112 is located between the first basic conductive layer 111 and the second conductive layer 2 , and the first bus layer 112 is electrically connected to the second conductive layer 2 .

[0094] And / or, the second conductive layer 2 includes a second bus layer 22 and a second base conductive layer 21 which are stacked, and the second bus layer 22 is located between the second base conductive layer 21 and the first conductive area 11 , and the second bus layer 22 is electrically connected to the first conductive area 11 .

[0095] Please refer to Figure 7 and Figure 8 In the embodiment shown, it should be noted that, on the projection plane perpendicular to the X direction, the orthographic projection of the first bus layer 112 at least partially overlaps with the orthographic projection of the second conductive layer 2. The conductive layer 3 is located between the first bus layer 112 and the second conductive layer 2, and the two opposite surfaces of the conductive layer 3 are in contact with the first bus layer 112 and the second conductive layer 2, respectively.

[0096] Specifically, when the first base material layer 61 and the second base material layer 63 are opposite to each other, the distance between the first bus layer 13 and the second conductive layer 2 needs to be controlled so that the distance between the first bus layer 13 and the second conductive layer 2 is less than or equal to the particle size of the conductive particles 31 .

[0097] Please refer to Figure 5 and Figure 6 In the embodiment shown, it should be noted that, on the projection plane perpendicular to the X direction, the orthographic projection of the second bus layer 22 at least partially overlaps with the orthographic projection of the first conductive area 11. The conductive layer 3 is located between the second bus layer 22 and the first conductive area 11, and two opposite surfaces of the conductive layer 3 are in contact with the second bus layer 22 and the first conductive area 11, respectively.

[0098] Specifically, when the first base material layer 61 and the second base material layer 63 are opposite to each other, the distance between the first conductive area 11 and the second bus layer 22 needs to be controlled so that the distance between the first conductive area 11 and the second bus layer 22 is less than or equal to the particle size of the conductive particles 31 .

[0099] Please refer to Figure 3 and Figure 4 In the embodiment shown, it should be noted that, on the projection plane perpendicular to the X direction, the orthographic projection of the first bus layer 112 and the orthographic projection of the second bus layer 22 at least partially overlap. The first bus layer 112 and the second bus layer 22 are arranged so that the thickness of the electrochromic device is more uniform and does not protrude too much to affect storage and transportation. The conductive layer 3 is located between the first bus layer 112 and the second bus layer 22, and the two opposite surfaces of the conductive layer 3 are in contact with the first bus layer 112 and the second bus layer 22, respectively.

[0100] Specifically, when the first base material layer 61 and the second base material layer 63 are opposite to each other, the distance between the first bus layer 13 and the second bus layer 22 needs to be controlled so that the distance between the first conductive area 11 and the second bus layer 22 is less than or equal to the particle size of the conductive particles 31 .

[0101] Optionally, the material of the first bus layer 112 may be silver, copper, aluminum, etc., or the material of the first bus layer 112 may be the same as the material of the first conductive layer 1 .

[0102] Optionally, the material of the second bus layer 22 may be silver, copper, aluminum, etc., or the material of the second bus layer 22 may be the same as the material of the second conductive layer 2 .

[0103] The first bus layer 112 can extend along the circumference of the first conductive area 11, and the second bus layer 22 can also extend along the circumference of the second conductive layer 2 to form a bus bar. By providing the bus bar, the current of the external power source can be quickly conducted to the conductive layer, which has the beneficial effect of accelerating the color change.

[0104] Please refer to Figures 3 to 11 In some embodiments, a conduction groove 7 is provided on the electrochromic device, and the conduction groove 7 at least penetrates the second conductive layer 2 and the conductive layer 3 to expose a portion of the first conductive area 11 and a portion of the second conductive area 12, and the exposed portion of the first conductive area 11 and the portion of the second conductive area 12 are electrically connected to the positive and negative electrodes of the external power supply through the conduction groove 7, respectively.

[0105] By providing the conducting groove 7, partial surfaces of the first conductive area 11 and the second conductive area 12 facing the second conductive layer 2 can be exposed through the conducting groove 7, so that the surfaces of the first conductive area 11 and the second conductive area 12 facing the second conductive layer 2 can be electrically connected to the positive and negative electrodes of the external power supply respectively.

[0106] Please refer to Figure 4 Specifically, the conduction groove 7 may be located at the edge of the electrochromic device. Figure 3 Specifically, the conduction groove 7 may be located inside the electrochromic device.

[0107] exist Figure 3 and Figure 4 In the illustrated embodiment, the first conductive region 11 has a first exposed surface 113 and a first electrical connection surface 114 facing the second conductive layer 2, the second conductive region 12 has a second exposed surface 121 and a first electrode surface 122 facing the second conductive layer 2, the first exposed surface 113 and the second exposed surface 121 are located in the conductive groove 7, and the first exposed surface 113 and the second exposed surface 121 are used to be electrically connected to the positive and negative electrodes of an external power source respectively through the conductive groove 7.

[0108] The second conductive layer 2 has a second electrical connection surface 23 and a second electrode surface 24 facing the first conductive layer 1, the second electrical connection surface 23 is opposite to the first conductive area 11, and the second electrode surface 24 is opposite to the second conductive area 12. The first base material layer 61 is disposed on the second conductive area 12, the second base material layer 63 is disposed on the second electrode surface 24, and the conductive layer 3 is disposed between the first conductive area 11 and the second electrical connection surface 23.

[0109] The conductive groove 7 penetrates the second substrate 5, the second conductive layer 2, the conductive layer 3 and the electrochromic layer group 6, so that the first exposed surface 113 and the second exposed surface 121 are exposed through the conductive groove 7, and the first base material layer 61 not penetrated by the conductive groove 7 remains on the first electrode surface 122, and the conductive layer 3 not penetrated by the conductive groove 7 remains on the first electrical connection surface 114.

[0110] exist Figure 3 and Figure 4 In the illustrated embodiment, the first conductive area 11 includes a first basic conductive layer 111 and a first bus layer 112 which are stacked; the second conductive layer 2 includes a second bus layer 22 and a second basic conductive layer 21 which are stacked. The first exposed surface 113 is arranged on the surface of the first conductive area 11 facing the second conductive layer 2, and the first electrical connection surface 114 is arranged on the surface of the first bus layer 112 facing the second conductive layer 2. The second electrical connection surface 23 is arranged on the surface of the second bus layer 22 facing the first conductive layer 1.

[0111] Please refer to Fig. 9 and Fig.10 In some embodiments, the electrochromic device further includes a seal 8, a sealing groove is provided on the electrochromic device, the sealing groove at least penetrates the second conductive layer 2 and the electrochromic layer group 6, the seal 8 is accommodated in the sealing groove, and the seal 8, the second conductive layer 2 and the second conductive area 12 are enclosed to form a closed space to seal the electrochromic layer group 6 located in the closed space.

[0112] Through the above arrangement, water vapor will not enter the electrochromic layer group 6 in the closed space, thereby avoiding the problem of failure of the electrochromic layer group 6 in the closed space, and making the electrochromic device less prone to damage.

[0113] Please refer to Fig. 9 , Fig.10 and Fig.11 In some embodiments, the sealing groove is an annular groove, which extends from the second substrate 5 to the surface of the first conductive layer 1, and the sealing member 8 seals part of the electrochromic layer group 6 in cooperation with the second conductive layer 2 and the first conductive layer 1. The sealing member 8 forms the outline of the electrochromic device.

[0114] Please refer to Fig.10Specifically, part of the conduction groove 7 is located outside the enclosed space, and at least part of the conduction layer 3 is located inside the enclosed space (the conduction groove 7 overlaps with the sealing groove or is conductive with the sealing groove). In other words, the projection of the sealing groove on the plane where the electrochromic device is located passes through the projection of the first conductive area 11 on the plane where the electrochromic device is located. A part of the conduction layer 3 between the first conductive area 11 and the second conductive area 12 is located on the inner side of the sealing groove, which is also the side of the sealing groove facing the center part. Another part of the first conductive area 11 is located on the outer side of the sealing groove, that is, on the edge part. The exposed first conductive area 11 and the second conductive area 12 are located outside the enclosed space and extend away from the sealing groove. The seal 8 is filled in the sealing groove and extends to cover the conduction groove 7. The seal 8 cooperates with the first conductive layer 1 to fix the lead-out structure and seal the entire electrochromic device.

[0115] In some embodiments, the electrochromic device further includes a first lead-out structure 9 and a second lead-out structure 10; the first lead-out structure 9 is electrically connected to the first conductive region 11, and the first lead-out structure 9 is used to be electrically connected to one of the positive electrode and the negative electrode of the external power source;

[0116] The second lead-out structure 10 is electrically connected to the second conductive area 12 ; the second lead-out structure 10 is used to be electrically connected to the other of the positive electrode and the negative electrode of the external power source.

[0117] By providing the lead-out structure, it is convenient to electrically connect the first conductive area 11 and the second conductive area 12 in the first conductive layer 1 to the positive and negative electrodes of the external power source. Fig. 9 In the illustrated embodiment, the first exposed surface 113 of the first conductive region 11 and the second exposed surface 121 of the second conductive region 12 are both located inside the conducting groove 7, and the positive and negative electrodes of the external power supply are not easy to extend into the conducting groove 7 to connect with the first exposed surface 113 and the second exposed surface 121.

[0118] It should be noted that the first lead-out structure 9 and the second lead-out structure 10 may be separately provided. In this embodiment, the first lead-out structure 9 and the second lead-out structure 10 may be two independent FPCs.

[0119] However, since the electrochromic device of the embodiment of the present application can lead out the electrode on one side, the first lead-out structure 9 and the second lead-out structure 10 can be arranged on the same surface of the same carrier board (such as a circuit board). Specifically, the conductive end of the first lead-out structure 9 and the conductive end of the second lead-out structure 10 are arranged on the same surface of the same carrier board to facilitate the taking of the first lead-out structure 9 and the second lead-out structure 10 and the positive and negative electrodes of the external power supply, and the conductive ends of the first lead-out structure 9 and the second lead-out structure 10 face the same surface and can be directly bonded to the first conductive area 11 and the second conductive area 12, thereby simplifying the process of producing the electrochromic device of the embodiment of the present application.

[0120] The technical solution adopted in the second embodiment of the present application is: an electrochromic device, including a substrate layer and the electrochromic device of the first embodiment mentioned above.

[0121] The substrate layer is located on a side of the second conductive layer 2 facing away from the first conductive layer 1 ; and / or, the substrate layer is located on a side of the first conductive layer 1 facing away from the second conductive layer 2 .

[0122] By applying the electrochromic device of the first embodiment to an electrochromic device, the electrode of the electrochromic device can be led out on one side, thereby simplifying the electrical connection method of the electrochromic device.

[0123] Specifically, the electrochromic device includes two substrate layers, namely a first substrate layer and a second substrate layer. The first substrate layer is located on the side of the first conductive layer 1 away from the second conductive layer 2, and the second substrate layer is located on the side of the second conductive layer 2 away from the first conductive layer 1. The second substrate layer is provided with a first through hole communicating with the conductive groove 7, and the second substrate layer is provided with a second through hole communicating with the sealing groove.

[0124] The technical solution adopted in the third aspect embodiment of the present application is: a terminal product, including the electrochromic device of the first aspect embodiment or the electrochromic device of the second aspect embodiment, 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.

[0125] By applying the electrochromic device of the first embodiment or the electrochromic device of the second embodiment to a terminal product, the electrical connection method of the terminal product can be simplified, and all the advantages of the electrochromic device can be obtained.

[0126] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. 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 make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An electrochromic device, characterized in that: include: A first conductive layer, comprising a first conductive region and a second conductive region insulated from each other; a second conductive layer, the second conductive layer being disposed on one side of the first conductive layer and being electrically connected to the first conductive region; The electrochromic layer group is located between the second conductive area and the second conductive layer; wherein, A portion of the surface of the first conductive area and a portion of the surface of the second conductive area facing the same direction are respectively used to be electrically connected to a positive electrode and a negative electrode of an external power source.

2. The electrochromic device according to claim 1, characterized in that: The electrochromic device further includes a conductive layer, and the first conductive region, the conductive layer and the second conductive layer are stacked.

3. The electrochromic device according to claim 2, characterized in that: The distance between the first conductive area and the second conductive layer is H, the conductive layer includes conductive particles, the particle size of the conductive particles is D, and H≤D.

4. The electrochromic device according to claim 3, characterized in that: H<D-2um, or, H<D / 2.

5. The electrochromic device according to claim 3, characterized in that: The electrochromic layer group includes a first base material layer, an electro-optical medium layer and a second base material layer. The first base material layer, the electro-optical medium layer and the second base material layer are stacked in the distribution direction of the first conductive layer and the second conductive layer, and the thickness of the electro-optical medium layer is L, where L>D.

6. The electrochromic device according to claim 5, characterized in that: L≥2D, or, L≥D+2um.

7. The electrochromic device according to any one of claims 3 to 6, characterized in that: The value range of D is 7um-100um.

8. The electrochromic device according to any one of claims 1 to 6, characterized in that: The first conductive area includes a first basic conductive layer and a first bus layer which are stacked, and the first bus layer is located between the first basic conductive layer and the second conductive layer, and the first bus layer is electrically connected to the second conductive layer; And / or, the second conductive layer includes a second bus layer and a second basic conductive layer which are stacked, and the second bus layer is located between the second basic conductive layer and the first conductive area, and the second bus layer is electrically connected to the first conductive area.

9. The electrochromic device according to any one of claims 2 to 6, characterized in that: A conduction groove is provided on the electrochromic device, and the conduction groove at least penetrates the second conductive layer and part of the conductive layer to expose part of the first conductive area and part of the second conductive area, and the exposed part of the first conductive area and part of the second conductive area are used to be electrically connected to the positive and negative electrodes of an external power supply through the conduction groove respectively.

10. The electrochromic device according to claim 9, characterized in that: The electrochromic device also includes a seal, and a sealing groove is provided on the electrochromic device. The sealing groove at least penetrates the second conductive layer and the electrochromic layer group. The seal is accommodated in the sealing groove, and the seal, the first conductive layer and the second conductive layer are enclosed to form a closed space to seal the electrochromic layer group located in the closed space.

11. The electrochromic device according to claim 10, characterized in that: The conducting groove partially overlaps with the sealing groove, and the exposed portion of the first conductive area and the exposed portion of the second conductive area extend away from the sealing groove.

12. The electrochromic device according to any one of claims 1 to 6, characterized in that: The electrochromic device further includes a first lead-out structure and a second lead-out structure; The first lead-out structure is electrically connected to the first conductive area, and the first lead-out structure is used to be electrically connected to one of the positive electrode and the negative electrode of the external power source; The second lead-out structure is electrically connected to the second conductive area; the second lead-out structure is used to be electrically connected to the other of the positive electrode and the negative electrode of the external power source.

13. The electrochromic device according to claim 12, characterized in that: The electrochromic device further includes a carrying plate, and the first lead-out structure and the second lead-out structure are arranged on the same surface of the carrying plate.

14. An electrochromic device, characterized in that: An electrochromic device comprising a substrate layer and any one of claims 1 to 13; The substrate layer is located on a side of the second conductive layer facing away from the first conductive layer; And / or, the substrate layer is located on a side of the first conductive layer facing away from the second conductive layer.

15. A terminal product, characterized in that: The invention comprises the electrochromic device according to any one of claims 1 to 13 or the electrochromic device according to claim 14, 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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