Substrate structure, electrochromic device, electrochromic device and terminal product

Abstract

The utility model relates to the technical field of electrochromism, in particular to a base material structure, an electrochromism device, an electrochromism device and a terminal product. The base material structure comprises a conductive layer, a confluence layer, a base material layer and a dielectric layer. The conductive layer has a bearing surface. The confluence layer is arranged on the bearing surface; the base material layer is arranged on the bearing surface and is at least located on one side of the extension direction of the confluence layer; the dielectric layer is disposed on the bearing surface, and the dielectric layer is located between the confluence layer and the base material layer. The dielectric layer is arranged between the confluence layer and the base material layer, and the dielectric layer plays a role in separating the confluence layer from the base material layer, so that the base material layer is prevented from being in direct contact with the confluence layer, the surface of the confluence layer repels the base material layer, and the base material near the surface of the bus bar is not uniform; the technical problem that in the prior art, a base material is not uniform when being close to the surface of a confluence layer, and the optical performance of a device is affected is solved.

Description

Technical Field

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

[0002] The optical properties of electrochromic devices can undergo stable and reversible color changes under the action of an external electric field, which is manifested in reversible changes in color and transparency. It has a wide range of applications in products such as vehicle rearview mirrors, vehicle sunroofs, side windows, building curtain walls, door and window systems, and display devices.

[0003] In the prior art, a bus bar is generally pre-arranged on the conductive layer, and then a base material (electrochromic layer or ion storage layer) is coated on the conductive layer with the bus bar to form a substrate structure. Then, the substrate structure with the electrochromic layer and the substrate structure with the ion storage layer are compounded through an electrolyte to form an electrochromic device. However, the bus bar in the related art will repel the base material, resulting in uneven distribution of the base material near the bus bar, thereby affecting the optical performance of the electrochromic device. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a substrate structure, an electrochromic device, an electrochromic apparatus and a terminal product, wherein the basic material on the substrate structure is distributed more evenly.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the first aspect of the embodiment of the present application is: a substrate structure, including a conductive layer, a bus layer, a base material layer and a dielectric layer.

[0006] The conductive layer has a bearing surface; the bus layer is arranged on the bearing surface; the basic material layer is arranged on the bearing surface, and the basic material layer is at least located on one side of the extension direction of the bus layer; the dielectric layer is arranged on the bearing surface, and the dielectric layer is located between the bus layer and the basic material layer.

[0007] The beneficial effect of the substrate structure provided in the present application is that a dielectric layer is arranged between the bus layer and the base material layer, and the dielectric layer serves to separate the bus layer and the base material layer, thereby preventing the liquid in the base material layer from directly contacting the bus layer, causing the surface of the bus layer to repel the liquid in the base material layer and resulting in uneven base material near the bus bar surface, thereby solving the technical problem in the prior art that the base material becomes uneven when close to the surface of the bus layer, affecting the optical performance of the device.

[0008] In some embodiments, the base material layer and / or the dielectric layer covers a portion of the surface of the bus layer facing away from the conductive layer.

[0009] In some embodiments, the dielectric layer includes a first dielectric portion and a second dielectric portion, and the bus layer includes a first portion and a second portion; the second dielectric portion covers the second portion, and the first dielectric portion is disposed at intervals around the outer periphery of the bus layer.

[0010] In some embodiments, on the bearing surface, the dielectric layer is disposed around the outer periphery of the bus layer.

[0011] In some embodiments, on the bearing surface, a width of the dielectric layer extending toward the bus layer or a width of the dielectric layer extending toward the base material layer is 0.1 mm-0.2 mm.

[0012] In some embodiments, on the bearing surface, the distance between the dielectric layer and the bus layer is 0.15 mm-0.30 mm.

[0013] In some embodiments, the thickness of the dielectric layer is greater than or equal to the thickness of the bus layer.

[0014] In some embodiments, the bus layer has a thickness of 4um-7um, and / or the dielectric layer has a thickness of 4um-7um.

[0015] To achieve the above-mentioned purpose, the technical solution adopted in the second embodiment of the present application is: an electrochromic device, including an electro-optical medium layer and two substrate structures of the above-mentioned first embodiment.

[0016] The two substrate structures are respectively a first substrate structure and a second substrate structure, the basic material layer in the first substrate structure is one of the electrochromic layer and the ion storage layer, and the basic material layer in the second substrate structure is the other of the electrochromic layer and the ion storage layer; the two substrate structures are arranged opposite to each other, and the electro-optical medium layer is located between the first substrate structure and the second substrate structure.

[0017] The electrochromic device provided by the present application has the following beneficial effects: by applying the substrate structure of the first embodiment to the electrochromic device, the technical problem in the prior art that the base material is uneven near the surface of the busbar layer and affects the optical performance of the electrochromic device is solved. The base material layer is evenly distributed near the busbar layer and does not affect the optical performance of the electrochromic device.

[0018] In some embodiments, at least a portion of the conductive layer in the first substrate structure is exposed to the base material layer of the first substrate structure to form a first conductive area; at least a portion of the conductive layer in the second substrate structure is exposed to the base material layer of the second substrate structure to form a second conductive area; the first conductive area and the second conductive area are opposite to each other and electrically connected.

[0019] In some embodiments, the electrochromic device further includes a conduction layer, wherein the conduction layer is located between the first conduction region and the second conduction region, and the conduction layer is electrically connected to the first conduction region and the second conduction region, respectively.

[0020] To achieve the above-mentioned purpose, the technical solution adopted in the third aspect embodiment of the present application is: an electrochromic device, comprising a substrate and the electrochromic device of the above-mentioned second aspect embodiment, wherein the substrate is arranged on the side of the first substrate structure away from the second substrate structure, and / or the substrate is arranged on the side of the second substrate structure away from the first substrate structure.

[0021] The beneficial effect of the electrochromic device provided by the present application is that by applying the electrochromic device of the above-mentioned second aspect embodiment to the electrochromic device, the electrochromic device has a better color changing effect.

[0022] To achieve the above-mentioned purpose, the technical solution adopted in the fourth aspect embodiment of the present application is: a terminal product, including the electrochromic device of the above-mentioned second aspect embodiment or the electrochromic device of the above-mentioned third 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.

[0023] The beneficial effect of the terminal product provided by the present application is that by applying the electrochromic device of the above-mentioned second aspect embodiment or the electrochromic device of the above-mentioned third aspect embodiment to the terminal product, the terminal product has a better color changing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 is a schematic structural diagram of a substrate structure in one of the embodiments of the present application;

[0026] Figure 2 yes Figure 1 A cross-sectional view of the substrate structure shown along the AA direction;

[0027] Figure 3 is a schematic structural diagram of a substrate structure in another embodiment of the present application;

[0028] Figure 4 yes Figure 3 A cross-sectional view of the substrate structure shown along the BB direction;

[0029] Figure 5 is a schematic structural diagram of a substrate structure in another embodiment of the present application;

[0030] Figure 6 yes Figure 5 A cross-sectional view of the substrate structure shown along the CC direction;

[0031] Figure 7 is a schematic structural diagram of a substrate structure in another embodiment of the present application;

[0032] Figure 8 yes Figure 7 The schematic diagram of the structure of the substrate structure shown after removing the base material layer;

[0033] Fig. 9 is a schematic structural diagram of an electrochromic device in one of the embodiments of the present application;

[0034] Fig.10 is a schematic structural diagram of an electrochromic device in one of the embodiments of the present application;

[0035] Fig.11 It is a microscope picture of the varnish layer provided on the busbars in different areas on the conductive layer in the present application;

[0036] Fig.12 This is a microscope picture of a varnish layer provided on the peripheral side of the conductive layer bus bar in the present application.

[0037] Reference numerals:

[0038] 1. conductive layer; 11. first conductive layer 11; 111. first conductive region; 112. second conductive region; 12. second conductive layer 12;

[0039] 2. bus layer; 21. first part; 22. first bus bar; 23. second bus bar; 24. third bus bar;

[0040] 3. Base material layer; 31. First functional part; 32. Second functional part;

[0041] 4. dielectric layer; 41. first dielectric portion; 42. second dielectric portion;

[0042] 5. Conductive layer; 51. Conductive particles;

[0043] 61. first base material layer; 62. electro-optical medium layer; 63. second base material layer;

[0044] 7. Conducting groove;

[0045] 8. Seals. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] The optical properties of electrochromic devices can undergo stable and reversible color changes under the action of an external electric field, which is manifested in reversible changes in color and transparency. It has a wide range of applications in products such as vehicle rearview mirrors, vehicle sunroofs, side windows, building curtain walls, door and window systems, and display devices.

[0051] In the prior art, a bus bar is generally pre-arranged on the conductive layer, and then a base material (electrochromic layer or ion storage layer) is coated on the conductive layer with the bus bar to form a substrate structure. Then, the substrate structure with the electrochromic layer and the substrate structure with the ion storage layer are compounded through an electrolyte to form an electrochromic device. However, the bus bar in the related art will repel the base material, resulting in uneven distribution of the base material near the bus bar, which will affect the color change effect of the electrochromic device.

[0052] In view of the above problems, the embodiments of the present application provide a substrate structure, an electrochromic device, an electrochromic apparatus and a terminal product, wherein the basic material on the substrate structure is distributed more evenly.

[0053] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0054] Please refer to Figures 1 to 4 An embodiment of the present application provides a substrate structure, including a conductive layer 1, a bus layer 2, a base material layer 3 and a dielectric layer 4.

[0055] The conductive layer 1 is arranged on a substrate, and the substrate is a flexible substrate, such as PET (Polyethyleneterephthalate), PC (Polycarbonate) and other transparent flexible optical materials. The bus layer 2 and the base material layer 3 are arranged on the same surface of the conductive layer 1, and the conductive layer 1 has a bearing surface (the side of the conductive layer 1 facing away from the substrate is the bearing surface); the bus layer 2 is arranged on the bearing surface; the base material layer 3 is also arranged on the bearing surface, and the base material layer 3 is at least located on one side of the bus layer 2; the conductive layer 1 includes a central part and an edge part, and the edge part is arranged around the periphery of the central part. Specifically, the bus layer 2 is arranged on the edge part of the conductive layer 1, and the corresponding base material layer 3 is at least arranged on the central part of the conductive layer 1. The dielectric layer 4 is arranged on the bearing surface, and the dielectric layer 4 is located between the bus layer 2 and the base material layer 3.

[0056] In the substrate structure provided by the present application, a dielectric layer 4 is provided between the bus layer 2 and the base material layer 3, and the dielectric layer 4 separates the bus layer 2 and the base material layer 3, so as to prevent the liquid in the base material layer 3 from directly contacting the bus layer 2, causing the surface of the bus layer 2 to repel the base material layer 3, resulting in uneven base materials near the surface of the bus layer 2, thus solving the technical problem in the prior art that the base material becomes uneven when close to the bus layer surface and affects the optical performance of the device. The base material has the advantages of being evenly distributed near the bus layer 2 and not affecting the optical performance of the electrochromic device.

[0057] After research, the inventor found that the adhesion between the base material layer 3 and the bus layer 2 is not high, and the phenomenon of repulsion occurs. This is mainly due to the low dyne value of the bus layer 2. When the base material liquid is sprayed on the conductive substrate by coating, it contacts the bus layer. Before the base material liquid solidifies, the bus layer 2 with a low dyne value repels the liquid base material, resulting in the base material being unable to be evenly attached to the surface of the conductive layer 1. Generally speaking, the higher the dyne value of a solid, the more surface energy it has, so the surface of the solid is more receptive to liquid, and the adhesion between the solid and the liquid will be better. In the present application, the dielectric layer 4 is provided, which is equivalent to providing an intermediate bonding layer between the base material layer 3 and the bus layer 2. The intermediate bonding layer can be in bonding contact with the bus layer 2 and the base material layer 3 respectively without repulsion. Therefore, through the intermediate bonding layer, the base material layer 3 and the bus layer 2 can be evenly distributed without repulsion.

[0058] It should be noted that, in the present application, in order to make the dielectric layer 4 have a higher adhesion to the base material solution, a material having a dyne value greater than the surface tension of the base material solution is selected as the material for forming the dielectric layer 4 .

[0059] Exemplarily, the difference between the dyne value of the dielectric layer 4 and the surface tension of the base material solution is greater than or equal to 15 dyn / cm.

[0060] It should be noted that the material of the dielectric layer 4 is an insulating material, that is, the dielectric layer 4 can prevent the bus layer 2 or the conductive layer 1 from being electrically connected to other conductors, such as an FPC (Flexible Printed Circuit), an external power supply, or another substrate structure with exposed bus bars.

[0061] Optionally, the material of the dielectric layer 4 includes but is not limited to epoxy acrylic resin, polyurethane acrylic resin, polyester acrylic resin and a mixture thereof.

[0062] It should be noted that the substrate structure of the present application can be used to make an electrochromic device, in which the base material layer 3 is one of an electrochromic layer and an ion storage layer. The base material layer 3 can be arranged on the conductive layer 1 using materials and methods available in the prior art.

[0063] Optionally, the base material layer 3 is an electrochromic layer. The material of the electrochromic layer includes, but is not limited to, tungsten trioxide, polydecyl viologen and its derivatives, polyaniline and its derivatives, electrochromic conjugated polymers or copolymers containing receptor units.

[0064] The electrochromic conjugated polymer includes one or a combination of at least two of polypyrrole and its derivatives, polythiophene and its derivatives, poly(3,4-ethylenedioxythiophene) and its derivatives, poly(propylenedioxythiophene) and its derivatives, polyfuran and its derivatives, polyfluorene and its derivatives, polycarbazole and its derivatives and copolymers thereof.

[0065] The copolymer containing the acceptor unit includes one or a combination of at least two of benzothiadiazole, benzoselenadiazole, benzoxazole, benzotriazole, benzimidazole, quinoxaline and diketopyrrolopyrrole.

[0066] Optionally, the solvent for dispersing the material of the electrochromic layer includes, but is not limited to, ethanol, isopropyl alcohol, xylene, toluene, ethyl acetate, acetic acid, acetone, etc., and mixtures thereof.

[0067] In summary, the base material solution can be any one of tungsten trioxide, polydecyl viologen and its derivatives, polyaniline and its derivatives, electrochromic conjugated polymers or copolymers containing receptor units, or a mixed solution of multiple materials and any one of the solvents such as ethanol, isopropanol, xylene, toluene, ethyl acetate, acetic acid, acetone and their mixtures.

[0068] Optionally, the base material layer 3 is an ion storage layer. The material of the ion storage layer includes, but is not limited to, one or a combination of at least two of oxides or complexes formed by metal elements in groups IIIB, IVB, VB, VIB, VIIB, VIII, IB and IIB that can store ions during electrochemical reactions.

[0069] Preferably, the metal element is selected from Ti, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ir, Ni, Cu and Zn.

[0070] Preferably, the complex is selected from Prussian green, Prussian white, Prussian brown, Prussian blue, KFeFe(CN)6, FeNiHCF, FeHCF, NiHCF or X m Y n {Fe(CN)6} or a combination of at least two thereof, wherein X is Na + or K + , Y is Fe 3+ 、Co 3+ 、Ni + , Mn 2+ 、Zn 2+ or Cu 2+ .

[0071] Optionally, the solvent of the material of the dispersed ion storage layer includes, but is not limited to, ethanol, isopropanol, xylene, toluene, ethyl acetate, acetic acid, acetone, etc. and mixtures thereof.

[0072] In summary, the basic material solution can be a mixed solution of one or more materials of oxides or complexes formed by metal elements in groups IIIB, IVB, VB, VIB, VIIB, VIII, IB and IIB that can store ions during electrochemical reactions and a solvent such as ethanol, isopropanol, xylene, toluene, ethyl acetate, acetic acid, acetone, etc. and a mixture thereof.

[0073] It should be noted that the conductive layer 1 is a conductive film, and the conductive layer 1 is relatively soft. Generally, the conductive layer 1 is disposed on a substrate, and the conductive layer 1 and the substrate constitute a conductive substrate. During the molding and transfer process of the conductive layer 1, the substrate plays a role of bearing and supporting. The substrate is a transparent flexible material, such as transparent flexible optical materials such as PET and PC, the conductive layer 1 is made of a transparent conductive film, such as ITO (Indium-Tin Oxide, indium tin oxide) film, and the bus layer 2 is made of a conductive material such as silver.

[0074] Optionally, a conductive solution is coated on the substrate, and the conductive layer 1 is formed after the conductive solution is solidified.

[0075] Optionally, during actual production, the substrate with the conductive layer may also be purchased directly.

[0076] For example, the surface tension of a general base material solution is 33 dyn / cm, while the bus layer 2 is usually a silver layer, and the dyne value of the silver layer is 36 dyn / cm. The dyne value of the bus layer 2 is 3 higher than the surface tension value of the base material solution, and the difference in values ​​is small, so that the surface of the bus layer 2 is not easy to accept the base material solution, so that the base material is rejected by the bus layer 2, and therefore, the base material near the bus layer 2 will be unevenly distributed. The dyne value of the dielectric layer 4 is 72 dyn / cm, and the dyne value of the dielectric layer 4 is greater than the surface tension of the base material solution and the surface tension of the bus layer 2, so that the surface of the dielectric layer 4 is easy to accept the base material solution and the bus layer 2, and plays a role in connecting the bus layer 2 and the base material layer 3, so that the base material can be distributed more evenly.

[0077] In some embodiments of the present application, Fig.11 As shown, a busbar layer 2 (silver wire) is arranged on the conductive layer 1, and the black part in the figure is arranged on part of the busbar layer 2 of the same conductive layer 1. A transparent varnish (dielectric layer 4) is arranged on part of the busbar layer 2, and no treatment is done on part of the busbar layer 2, that is, part of the busbar layer 2 is exposed to the varnish (dielectric layer 4), and then the transparent base material is sprayed on the entire surface. It can be clearly seen that in the part where the varnish is not arranged, the base material is rejected by the busbar layer 2 and appears uneven, while in the part covered with the varnish layer, the base material can be well attached to the conductive layer 1. In addition, as Fig.12As shown, a circle of varnish layer is arranged outside the bus layer 2, that is, the varnish layer does not cover the bus layer 2, and at this time, the base material can also be well attached to the conductive layer 1. It can be seen that as long as the dielectric layer 4 is arranged on the periphery of the bus layer 2, a uniform base material can be achieved.

[0078] In other embodiments, the base material and the bus layer 2 are repelled from each other, which may be due to the mutual repulsion of the groups between the bus layer 2 and the base material. In this case, a group that combines with the two needs to be added to the dielectric layer 4 so that the three can coexist and be evenly distributed. The embodiments of this application only exemplify some of the achievable methods, and the other embodiments within the scope of the principles of this application will not be described one by one.

[0079] In the embodiment of the present application, the process of making the substrate structure of the embodiment of the present application is to first set the bus layer 2 on the conductive layer 1, then set the dielectric layer 4 on the conductive layer 1, and finally apply the base material solution on the conductive layer 1 to form the substrate structure. In this embodiment, the dyne value of the dielectric layer 4 is 15 dyn / cm greater than the surface tension of the base material layer.

[0080] The base material layer 3 is disposed at least on one side of the busbar layer 2 and may be Figure 1 As shown: the base material layer 3 is located on the peripheral side of the bus layer 2. The base material layer 3 is at least arranged on one side of the bus layer 2. Figure 3 As shown in FIG. 1 , the base material layer 3 is located on one side of the bus layer 2 close to the central part of the conductive layer 1. The base material layer 3 is at least arranged on one side of the bus layer 2. Figure 5 As shown in FIG. 1 , the base material layer 3 is located on the peripheral side of the conductive layer 1 of the bus layer 2, and the base material layer 3 also covers the entire surface of the bus layer 2. The base material layer 3 is at least arranged on one side of the bus layer 2. Figure 7 As shown, the base material layer 3 is located on the peripheral side of the conductive layer 1 of the bus layer 2 , and the base material layer 3 also covers a portion of the surface of the bus layer 2 .

[0081] Please refer to Figure 3 and Figure 4 The dielectric layer 4 is only arranged on one side of the bus layer 2 close to the central part of the conductive layer 1 . When spraying the base material, the base material solution is only sprayed on the central part of the conductive layer 1 .

[0082] After the substrate structure is combined into an electrochromic structure, the bus layer 2 is located at the edge of the electrochromic device, and the central part of the electrochromic device is the visible area. The base material plays a role of color change and dimming in the visible area. Therefore, it is only necessary to arrange the base material on the inner side of the bus layer 2, that is, the central part of the conductive layer 1. Such an arrangement can reduce the amount of the dielectric layer 4 and the base material layer 3, so as to save costs.

[0083] However, it should be noted that this process of spraying the base material only on the center part requires high spraying accuracy of the equipment. Therefore, the base material can be set on the surface of the entire bearing surface to reduce the accuracy requirement of the spraying equipment.

[0084] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the base material layer 3 and / or the dielectric layer 4 covers the entire surface of the busbar layer 2 facing away from the conductive layer 1 .

[0085] In this embodiment, the base material layer 3 is sprayed on the entire surface of the conductive layer 1 by spraying, so that the base material layer can be quickly and evenly coated on the supporting surface, thereby speeding up the production speed.

[0086] When spraying to the position corresponding to the bus layer 2 , the surface of the bus layer 2 facing away from the conductive layer 1 is covered by the dielectric layer 4 without rejecting the base material, thereby further improving the uniformity of the base material.

[0087] In some embodiments of the present application, Figure 7 and Figure 8 As shown, the base material layer 3 and / or the dielectric layer 4 covers a portion of the surface of the busbar layer 2 facing away from the conductive layer 1 .

[0088] In this embodiment, the base material layer 3 can be sprayed on the entire surface of the supporting surface of the conductive layer 1 by spraying, and the base material and the dielectric layer 4 can be wiped off at the location where the busbar layer 2 needs to be exposed.

[0089] like Figure 8 As shown, the dielectric layer 4 includes a first dielectric portion 41 and a second dielectric portion 42, and the bus layer 2 includes a first portion 21 and a second portion (the second portion is not shown in the figure because it is covered by the second dielectric portion 42), and the first portion 21 and the second portion are integrally formed; the second dielectric portion 42 covers the second portion, and the first dielectric portion 41 is arranged at intervals around the outer peripheral side of the bus layer 2.

[0090] In some embodiments of the present application, the base material layer 3 includes a first functional portion 31, which is arranged on the bearing surface, and the first functional portion 31 is located on the side of the first dielectric portion 41 away from the bus layer 2. After the substrate structure is formed into an electrochromic device, the first functional portion 31 plays a color-changing role and serves as a visible area of ​​the electrochromic device. The base material layer 3 also includes a second functional portion 32 connected to the first functional portion 31, and the second functional portion 32 is arranged on the surface of the second dielectric portion 42 away from the bus layer 2.

[0091] Please refer to Figure 6 , Figure 7 and Figure 8In some embodiments, the second dielectric portion 42 is located on the surface of a portion of the bus layer 2 facing away from the conductive layer 1, and on the bearing surface, the second dielectric portion 42 is also located on two opposite sides of the bus layer 2. That is, on a projection surface parallel to the bearing surface, the orthographic projection of the second portion is located within the orthographic projection of the second dielectric portion 42, and the orthographic projection of the first portion 21 is located outside the orthographic projection of the second dielectric portion 42, that is, the second portion is completely covered by the second dielectric portion 42.

[0092] Please refer to Figure 6 Optionally, in the direction in which the bus layer 2 and the first dielectric portion 41 are spaced apart, the width of the second dielectric portion 42 is (A) 1 mm-2 mm greater than the width of the bus layer 2. Alternatively, in the direction in which the bus layer 2 and the first dielectric portion 41 are spaced apart, both sides of the second dielectric portion 42 protrude from the bus layer 2, and the width of the protrusion on each side is (A) 1 mm-2 mm.

[0093] In some embodiments of the present application, the base material layer 3 covers the entire surface, that is, the base material is arranged on the bearing surface, the first portion 21 and the second portion, and the dielectric layer 4 is arranged on part of the bearing surface, the first portion 21 and the second portion (e.g. Figure 5 As shown). In this production, the conductive layer 1 can be directly sprayed on the surface according to the production process, and the base material and the dielectric layer 4 can be wiped off at the location where the busbar layer 2 needs to be exposed. For example, the base material and the dielectric layer 4 on the first part 21 can be wiped off to obtain the following Figure 7 The structure shown; if the base material and the dielectric layer 4 on the first portion 21 and the second portion are erased to obtain Figure 1 The structure described.

[0094] Specifically, the steps of making the substrate structure of the embodiment of the present application can be: first attaching the bus layer 2 on the conductive layer 1, then using the screen printing process to coat the dielectric layer 4 on the bus layer 2, and then setting the base material layer 3 on the conductive layer 1, and the base material layer 3 completely covers the dielectric layer 4, so as to obtain Figure 7 The bus layer 2 shown is completely covered by the substrate structure; or the base material layer 3 and the dielectric layer 4 on the first part 21 are removed to obtain a substrate structure as shown in FIG. Figure 7 The bus layer 2 shown in the figure is partially exposed to the outside (the first part 21 is exposed to the outside); or the base material layer 3 and the dielectric layer 4 on the first part 21 and the second part are removed to obtain a substrate structure as shown in the figure. Figure 1 The busbar layer 2 shown is a substrate structure that is completely exposed.

[0095] Please refer to Figure 1 , Figure 5 and Figure 7 In some embodiments, on the bearing surface, the dielectric layer 4 is disposed around the outer peripheral side of the bus layer 2 .

[0096] The dielectric layer 4 is arranged on the outer peripheral side of the bus layer 2, and the base material can be arranged on the outer peripheral side of the bus layer 2. In some large-area production, when spraying the base material, a whole base material layer can be sprayed on the surface of the entire bearing surface, so that the base material layer can be quickly and evenly coated on the bearing surface, which can speed up the production speed. And it is necessary to arrange the base material around the bus layer 2 to achieve a fast and uniform conductive effect.

[0097] In some embodiments of the present application, Figure 6 As shown, the dielectric layer 4 can cover the outer side wall of the bus layer 2. That is, the dielectric layer 4 is attached to the bus layer 2.

[0098] It should be noted that the dielectric layer 4 is disposed on the conductive layer 1 by silk-screen printing.

[0099] Specifically, after the bus layer 2 is disposed on the conductive layer 1, the dielectric layer 4 is screen-printed on the conductive layer 1. Considering the alignment accuracy in screen printing, there is always a certain distance between the first dielectric portion 41 and the bus layer 2; however, the inventors found that if the distance between the first dielectric portion 41 and the bus layer 2 is too far, the vacant area on the bearing surface will be increased, which will affect the area of ​​the base material layer 3, thereby affecting the visible area of ​​the electrochromic device. If the distance between the first dielectric portion 41 and the bus layer 2 is too close, the screen printing accuracy requirement will be relatively high.

[0100] Please refer to Figure 1 In some embodiments, on the bearing surface, the distance between the dielectric layer 4 and the bus layer 2 is (B) 0.15 mm-0.30 mm.

[0101] In the embodiment of the present application, the distance between the dielectric layer 4 and the bus layer 2 is controlled to be 0.15 mm-0.30 mm, which minimizes the vacant area on the bearing surface while minimizing the screen printing accuracy requirement and does not affect the uniformity and adhesion of the first dielectric portion 41 .

[0102] Please refer to Figure 1 and Figure 3 On the bearing surface, the distance between the dielectric layer 4 and the bus layer 2 refers to the distance between the edges of the first dielectric portion 41 and the bus layer 2 that are close to each other.

[0103] Please refer to Figure 2 In some embodiments, on the bearing surface, the width of the dielectric layer 4 extending toward the bus layer 2 or the width of the dielectric layer 4 extending toward the base material layer 3 (C) is 0.1 mm-0.2 mm.

[0104] Please refer to Figure 1 and Figure 3On the bearing surface, the width of the dielectric layer 4 extending toward the bus layer 2 or the width of the dielectric layer 4 extending toward the base material layer 3 refers to the width of the first dielectric portion 41 extending toward the bus layer 2 or the width of the first dielectric portion 41 extending toward the base material layer 3.

[0105] Specifically, the dielectric layer 4 is disposed on the conductive layer 1 by silk-screen printing.

[0106] It should be noted that, considering the accuracy of silk screen printing and the fact that on the bearing surface, if the width of the dielectric layer 4 is too small, the spacing between the busbar layer 2 and the base material layer 3 will be reduced, and the effective spacing effect will not be achieved, while if the width of the first dielectric portion 41 is too large, the setting area of ​​the base material will be reduced, thereby affecting the area of ​​the visible area of ​​the electrochromic device. In the embodiment of the present application, the width of the first dielectric portion 41 is controlled to be 0.1 mm-0.2 mm, and the area occupied by the first dielectric portion 41 can be reduced as much as possible while ensuring that the first dielectric portion 41 has a separation effect, and the accuracy requirements are also controlled within the range that can be met by the silk screen printing process.

[0107] In some embodiments, the thickness of the dielectric layer 4 extending in a direction away from the conductive layer 1 is greater than or equal to the thickness of the bus layer 2 extending in a direction away from the conductive layer 1 .

[0108] Please refer to Figure 1 and Figure 3 Through the above arrangement, when coating the base material solution, the first dielectric portion 41 can limit the base material solution to prevent the base material solution from crossing the first dielectric portion 41 and contacting the confluence layer 2, thereby avoiding the base material from being rejected and making the base material distribution more uniform.

[0109] Please refer to Figure 2 Optionally, the thickness (E) of the bus layer 2 extending in a direction away from the conductive layer 1 is 4um-7um, and / or the thickness (F) of the dielectric layer 4 extending in a direction away from the conductive layer 1 is 4um-7um.

[0110] Specifically, the thickness of the bus layer 2 is 4um, and the thickness of the dielectric layer 4 is 6um. The coating thickness of the base material solution is 5um-15um, and the thickness of the base material layer 3 formed after the base material solution is solidified is less than 1um. This can prevent the base material solution from crossing the first dielectric part 41 and contacting the bus layer 2, thereby avoiding the base material from being repelled, so that the base material is distributed more evenly.

[0111] Please refer to Figure 1 and Figure 3The bus layer 2 is arranged along the edge of the conductive layer 1, occupies part of the edge, and is arranged in a contour with part of the edge of the conductive layer 1. For example, in a quadrilateral structure, the bus layer 2 includes a first bus portion parallel to the X direction and a second bus portion parallel to the Y direction, and the first dielectric portion 41 includes a first dielectric portion parallel to the X direction and a second dielectric portion parallel to the Y direction.

[0112] Of course, in other embodiments, if the shape of the electrochromic device is circular, elliptical or other irregular shapes, the bus layer 2 is arranged along the edge of the conductive layer 1 to conduct the current to the edge portion of the conductive layer 1, thereby playing a role in quickly conducting the current.

[0113] Please refer to Figure 1 , Figure 3 and Figure 7 In the embodiment shown, part of the bus layer 2 is exposed, and the exposed bus layer 2 can be used to electrically connect with other conductors, such as an FPC (Flexible Printed Circuit), an external power supply, or another substrate structure with an exposed bus bar to produce an electrochromic device with a lead-out electrode set on one side.

[0114] Specifically, please refer to Fig. 9 , the two substrate structures are respectively the first substrate structure and the second substrate structure, and the steps of making an electrochromic device that can be provided with a lead-out electrode on one side are: the first substrate structure can be cut into an independent first conductive area 111 and a second conductive area 112 by a cutting process, and a bus layer is provided on both the first conductive area 111 and the second conductive area 112; the first substrate structure and the second substrate structure are arranged opposite to each other, and the bus layer on the first conductive area 111 is at least partially exposed, and the bus layer exposed on the first conductive area 111 and the bus layer exposed in the second substrate structure are opposite and electrically connected to form an electrochromic device. When the electrochromic device is connected to the electrode, the bus layer on the first conductive area 111 is connected to the positive electrode, and the bus layer on the second conductive area 112 is connected to the negative electrode. Since the bus layer exposed on a part of the surface is opposite and electrically connected to the bus layer exposed in the second substrate structure, the conductive layer in the second substrate structure can be connected to the positive electrode. That is, in the electrochromic device, the conductive layer in the second substrate structure is connected to the positive electrode, the conductive layer in the second substrate structure is connected to the negative electrode, and the positive electrode and the negative electrode are both located on the same side of the electrochromic device to achieve single-sided connection of the electrodes.

[0115] The substrate structure is described below in conjunction with an embodiment. The surface tension of the base material solution is 33 dyn / cm, the dyne value of the conductive layer 1 is 56 dyn / cm, the dyne value of the dielectric layer 4 is 72 dyn / cm, and the dyne value of the bus layer 2 is 36 dyn / cm.

[0116] To achieve the above purpose, the second aspect of the present application provides an electrochromic device, including an electro-optical medium layer 62 and two substrate structures of the first embodiment. The electro-optical medium layer 62 is arranged between the two substrate structures. It is worth noting that the structures of the two substrate structures can be different or the same.

[0117] The two substrate structures are respectively a first substrate structure and a second substrate structure, the base material layer 3 (first base material layer 61) in the first substrate structure is one of the electrochromic layer and the ion storage layer, and the base material layer 3 (second base material layer 63) in the second substrate structure is the other of the electrochromic layer and the ion storage layer; the two substrate structures are arranged opposite to each other, and the electro-optical medium layer 62 is located between the first substrate structure and the second substrate structure.

[0118] By applying the substrate structure of the first embodiment to the electrochromic device, and by arranging a dielectric layer 4 between the bus layer 2 and the base material layer 3, the dielectric layer 4 separates the bus layer 2 and the base material layer 3, so as to avoid direct contact between the liquid in the base material layer 3 and the bus layer 2, causing the surface of the bus layer 2 to repel the liquid in the base material layer 3, resulting in uneven base material near the surface of the bus layer 2, thus solving the technical problem in the prior art that the base material becomes uneven when close to the bus layer surface and affects the optical performance of the device. The invention has the advantages that the base material is evenly distributed near the bus layer 2 and does not affect the optical performance of the electrochromic device.

[0119] In some embodiments, at least a portion of the conductive layer 1 in the first substrate structure is exposed to the base material layer 3 of the first substrate structure to form a first conductive area; at least a portion of the conductive layer 1 in the second substrate structure is exposed to the base material layer 3 of the second substrate structure to form a second conductive area; the first conductive area and the second conductive area are opposite to each other and electrically connected.

[0120] like Fig. 9 As shown, through the above arrangement, the first conductive area and the second conductive area are opposite and electrically connected so that the conductive layers in the two substrate structures are electrically connected; therefore, the conductive layer in the first substrate structure is divided into the first conductive area 111 and the second conductive area 112 which are insulated from each other, the first conductive area 111 is electrically connected to the first conductive area, and then the lead-out electrode is arranged on the same side of the first conductive area 111 and the second conductive area 112, so as to realize the single-side lead-out electrode, and it is not necessary to lead out on both sides separately. This solves the technical problem of the prior art that the lead-out electrodes need to be led out on both sides separately, and has the advantages of simplifying the electrical connection method of the electrochromic device, facilitating production and simplifying the production process, etc.

[0121] Please refer to Fig. 9Specifically, the first substrate structure includes a first conductive layer 11 (same as the conductive layer 1 in the first aspect embodiment), a first bus bar 22 (same as the bus bar 2 in the first aspect embodiment) and a second bus bar 23 (same as the bus bar 2 in the first aspect embodiment), the first conductive layer 11 is divided into mutually independent first conductive areas 111 and second conductive areas 112 by laser etching lines, the first bus bar 22 is arranged on the first conductive area 111, and the second bus bar 23 is arranged on the second conductive area 112, and the second substrate structure includes a second conductive layer 12 (same as the conductive layer 1 in the first aspect embodiment) and a third bus bar 24 (same as the bus bar 2 in the first aspect embodiment).

[0122] The electrochromic device includes an edge portion and a center portion, and correspondingly, the edge portion of the electrochromic device corresponds to the edge portion of the conductive layer 1, and the center portion of the electrochromic device corresponds to the center portion of the conductive layer 1. The third bus bar 24 is arranged at the edge portion of the second conductive layer 12, and the first bus bar 22 is arranged at the edge portion of the first conductive layer 11, wherein the projections of the first bus bar 22 and the third bus bar 24 on the plane where the electrochromic device is located enclose the outline of the electrochromic device. The surface of the first bus bar 22 is partially not covered by the base material layer to form a first conductive area, and the third bus bar 24 is not covered by the base material layer to form a second conductive area. The first bus bar 22 and the third bus bar 24 are opposite and electrically connected, so that only the first conductive area 111 and the second conductive area 112 of the first conductive layer 11 need to be connected to the positive electrode and the negative electrode respectively to realize the single-side lead-out. The dielectric layer is made of insulating material, so that when the two base materials are matched, the bus bar in the non-conductive area will not contact the conductive layer on the opposite side to cause a short circuit, thereby playing the role of insulating and protecting the bus bar.

[0123] In some embodiments, the orthographic projection of the first conductive region on the conductive layer 1 at least partially overlaps with the orthographic projection of the second conductive region on the conductive layer 1, so that the first conductive region and the second conductive region can contact each other to achieve electrical connection between the first conductive region and the second conductive region.

[0124] In some embodiments, the electrochromic device further includes a conducting layer 5 , which is located between the first conducting region and the second conducting region, and the conducting layer 5 is electrically connected to the first conducting region and the second conducting region, respectively.

[0125] Through the above arrangement, the first conductive area and the second conductive area are electrically connected through the conductive layer 5 .

[0126] Please refer to Fig.10 In some embodiments, the conductive layer 5 includes conductive particles 51 , and the distance (H) between the first conductive region and the second conductive region is equal to or smaller than the particle size (D) of the conductive particles 51 .

[0127] In some embodiments, H<D-2um, or, H<D / 2.

[0128] Please refer to Fig.10 In some embodiments, the conductive layer 5 and the electro-optical medium layer 62 can be formed by integrally solidifying an electro-optical medium solution mixed with conductive particles 51. Therefore, in this embodiment, in order to prevent the basic material layers 3 in the two substrate structures from short-circuiting, the distance (L) between the basic material layers 3 in the two substrate structures is greater than the particle size (D) of the conductive particles 51, that is, the thickness of the electro-optical medium layer is greater than the particle size (D) of the conductive particles 51.

[0129] In some embodiments, L≥2D, or, L≥D+2um.

[0130] In some embodiments, the value range of D is 7um-100um.

[0131] Please refer to Fig.10 In some embodiments, a conduction groove 7 is provided on the electrochromic device, and the conduction groove 7 runs through the second conductive layer 12, the second base material layer 63 and the electro-optical medium layer 62. The first conductive area 413 can be electrically connected to one of the positive and negative electrodes of the external power supply through the conduction groove 7, and the second conductive area 112 can be electrically connected to one of the positive and negative electrodes of the external power supply through the conduction groove 7.

[0132] Through the above arrangement, the first conductive area 111 and the second conductive area 112 are insulated from each other, and the first conductive area 111 and the second conductive layer are electrically connected through the conductive layer 5. Therefore, the lead-out electrode can be arranged on the same side of the first conductive area 111 and the second conductive area 112, and it is not necessary to lead out on both sides. The technical problem of the prior art that the lead-out 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.

[0133] Please refer to 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 12, and the seal 8 is accommodated in the sealing groove and cooperates with the first conductive layer 11 to seal the edge of the entire electrochromic device.

[0134] Through the above arrangement, the seal 8 can seal part of the first base material layer 61, the electro-optical medium layer 62 and the second base material layer 63 to prevent water vapor from entering the first base material layer 61, the electro-optical medium layer 62 and the second base material layer 63 and affecting the service life of the electrochromic device.

[0135] In some embodiments, the sealing groove is an annular groove, and the orthographic projection of the conducting groove 7 on the first conductive layer 11 is located outside the outer contour of the orthographic projection of the sealing groove on the first conductive layer 11 .

[0136] Through the above arrangement, the seal 8 is an annular structure, and parts of the first base material layer 61 , the electro-optical medium layer 62 and the second base material layer 63 are confined between the seal 8 , the first conductive layer 11 and the second conductive layer 12 .

[0137] Specifically, the sealing groove passes through the second conductive layer 12 , the second base material layer 63 , the electro-optical medium layer 62 and the first base material layer 61 to enhance the sealing effect of the electrochromic device. And the conductive layer 5 is located inside the sealing member 8 .

[0138] In some embodiments, the electrochromic device also includes a first lead-out structure and a second lead-out structure; the first lead-out structure is electrically connected to the first conductive region 111, and the first lead-out structure is used to be electrically connected to one of the positive and negative electrodes of an external power source; the second lead-out structure is electrically connected to the second conductive region 112; the second lead-out structure is used to be electrically connected to the other of the positive and negative electrodes of an external power source.

[0139] By providing the lead-out structure, it is convenient to electrically connect the first conductive area 111 and the second conductive area 112 in the first conductive layer 11 with the positive and negative electrodes of the external power source. Fig.10 In the illustrated embodiment, the first conductive area 111 and the second conductive area 112 are both located inside the conducting slot 7 , and the positive and negative electrodes of the external power source are not easy to extend into the conducting slot 7 to connect with the first conductive area 111 and the second conductive area 112 .

[0140] It should be noted that the first lead-out structure and the second lead-out structure may be separately provided. In this embodiment, the first lead-out structure and the second lead-out structure may be two independent FPCs.

[0141] 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 and the second lead-out structure 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 and the conductive end of the second lead-out structure are arranged on the same surface of the same carrier board to facilitate the taking of the first lead-out structure and the second lead-out structure from the positive and negative electrodes of the external power supply, and the conductive ends of the first lead-out structure and the second lead-out structure face the same surface and can be directly bonded to the first conductive area 111 and the second conductive area 112, thereby simplifying the process of producing the electrochromic device of the embodiment of the present application.

[0142] To achieve the above-mentioned objectives, the third aspect embodiment of the present application provides an electrochromic device, comprising a substrate and the electrochromic device of the second aspect embodiment above, wherein the substrate is arranged on a side of the first substrate structure away from the second substrate structure, and / or the substrate is arranged on a side of the second substrate structure away from the first substrate structure.

[0143] By applying the electrochromic device of the second embodiment to an electrochromic device, all the advantages of the electrochromic device are obtained, so that the electrochromic device has a better color changing effect.

[0144] To achieve the above-mentioned purpose, the technical solution adopted in the fourth aspect embodiment of the present application is: a terminal product, including the electrochromic device of the above-mentioned second aspect embodiment or the electrochromic device of the above-mentioned third 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.

[0145] By applying the electrochromic device of the second embodiment or the electrochromic device of the third embodiment to a terminal product, all the advantages of the substrate structure are obtained, so that the terminal product has a better color changing effect.

[0146] 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, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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. A substrate structure, characterized in that: include: A conductive layer having a bearing surface; A busbar layer is arranged on the bearing surface; A base material layer is disposed on the bearing surface, and the base material layer is at least located on one side of the extending direction of the busbar layer; The dielectric layer is disposed on the bearing surface, and the dielectric layer is located between the busbar layer and the base material layer.

2. The substrate structure according to claim 1, characterized in that: The base material layer and / or the dielectric layer covers a portion of the surface of the bus layer facing away from the conductive layer.

3. The substrate structure according to claim 2, characterized in that: The dielectric layer includes a first dielectric portion and a second dielectric portion, and the bus layer includes a first portion and a second portion; the second dielectric portion covers the second portion, and the first dielectric portion is disposed at intervals around the outer periphery of the bus layer.

4. The substrate structure according to claim 1, characterized in that: On the bearing surface, the dielectric layer is disposed around the outer peripheral side of the busbar layer.

5. The substrate structure according to claim 1, characterized in that: On the bearing surface, the width of the dielectric layer extending toward the busbar layer or the width of the dielectric layer extending toward the base material layer is 0.1 mm-0.2 mm.

6. The substrate structure according to claim 1, characterized in that: On the bearing surface, the distance between the dielectric layer and the busbar layer is 0.15 mm-0.30 mm.

7. The substrate structure according to any one of claims 1 to 6, characterized in that The thickness of the dielectric layer is greater than or equal to the thickness of the bus layer.

8. The substrate structure according to claim 7, characterized in that: The thickness of the bus layer is 4um-7um, and / or the thickness of the dielectric layer is 4um-7um.

9. An electrochromic device, characterized in that: A substrate structure comprising an electro-optical medium layer and two substrate structures as claimed in any one of claims 1 to 8; The two substrate structures are respectively a first substrate structure and a second substrate structure, the base material layer in the first substrate structure is one of an electrochromic layer and an ion storage layer, and the base material layer in the second substrate structure is the other of the electrochromic layer and the ion storage layer; The first substrate structure and the second substrate structure are arranged opposite to each other, and the electro-optical medium layer is located between the first substrate structure and the second substrate structure.

10. The electrochromic device according to claim 9, characterized in that: At least part of the conductive layer in the first substrate structure is exposed to the base material layer of the first substrate structure to form a first conductive area; at least part of the conductive layer in the second substrate structure is exposed to the base material layer of the second substrate structure to form a second conductive area; the first conductive area and the second conductive area are opposite to each other and electrically connected.

11. The electrochromic device according to claim 10, characterized in that: The electrochromic device further includes a conduction layer, which is located between the first conduction region and the second conduction region, and the conduction layer is electrically connected to the first conduction region and the second conduction region respectively.

12. An electrochromic device, characterized in that: An electrochromic device comprising a substrate and any one of claims 10 to 11, wherein the substrate is arranged on a side of the first substrate structure facing away from the second substrate structure, and / or the substrate is arranged on a side of the second substrate structure facing away from the first substrate structure.

13. A terminal product, characterized in that: The invention comprises the electrochromic device according to any one of claims 10 to 11 or the electrochromic device according to claim 12, 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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