Electrochromic membranes and color-changing glass

Abstract

The present application provides an electrochromic membrane and color-changing glass, belonging to the electrochromic field. The electrochromic membrane includes a first conductive substrate, an electrochromic layer, and a second conductive substrate, which are stacked in order, wherein a first groove is formed on the edge of the first conductive substrate, a second groove is formed on the edge of the second conductive substrate, and at least two third grooves are formed on the edge of the electrochromic layer, the first groove and the third groove communicate with each other to form a first groove, and the second groove and the third groove communicate with each other to form a second groove, the width of the first groove and the width of the second groove are both a, and the distance between the orthogonal projections of any adjacent first groove and second groove on the plane where the electrochromic layer is located is b, where b≦a. The first groove and the second groove provide a space for folding at the edge of the electrochromic membrane, which greatly reduces or prevents wrinkles from occurring at the edge of the electrochromic membrane, improves the aesthetics of the electrochromic membrane, and enhances the user's visual experience.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed with the China Patent Office on June 16, 2022, bearing application number 202210685619.5 and titled "Electrochromic Membrane and Color-Changing Glass", the entire contents of which are incorporated herein by reference.

[0002] This application relates to the field of electrochromics, and in particular to electrochromic membranes and color changing glasses. [Background technology]

[0003] Electrochromism is a phenomenon in which the optical properties (reflectance, transmittance, absorptance, etc.) of a material undergo a stable, reversible color change when an electric field is applied, and this is manifested in the appearance as a reversible change in color and transparency.

[0004] Electrochromism is widely used to adjust the light transmittance or reflectance of displays, notice devices such as large posters and information boards, smart windows, architectural window glass, automobile mirrors, flexible displays, automobile sunroofs, sports glasses, and the like. Recently, it has been found that electrochromism has an infrared shielding effect in addition to discoloration in the visible light range, and as a result, its application as an energy-saving product has attracted attention.

[0005] Conventional electrochromic membranes can be curved to meet the needs of the application of scenes such as curved surfaces. However, in some application scenes, such as the roof glass of a vehicle, not only one side of the electrochromic membrane needs to be curved, but also two or more sides need to be curved, which makes the electrochromic membrane prone to wrinkles, especially the edges of the electrochromic membrane prone to wrinkles, which not only makes the appearance unacceptable to users, but also worsens the visual experience of users. Summary of the Invention [Problem to be solved by the invention]

[0006] In view of this, it is an object of the present application to provide an electrochromic membrane and color-changing glass to overcome the shortcomings in the prior art. [Means for solving the problem]

[0007] One aspect of the present application is a display device including a first conductive substrate, an electrochromic layer, and a second conductive substrate, which are laminated in this order, a first receiving groove is provided on an edge of the first conductive substrate, a second receiving groove is provided on an edge of the second conductive substrate, and at least two third receiving grooves are provided on an edge of the electrochromic layer, an orthogonal projection of the first receiving groove on a plane on which the electrochromic layer is located overlaps with at least one of the third receiving grooves, and the first receiving groove and the third receiving groove are connected to each other to form a first concave groove, and the element of the second receiving groove is formed by a first recessed groove. and an electrochromic membrane in which an orthogonal projection on a plane on which the electrochromic layer is located overlaps with at least one of the third grooves, and the second groove and the third groove are connected to form a second groove, the first groove and the second groove are alternately arranged on the edge of the electrochromic membrane, the width of the first groove and the width of the second groove are both a, and the distance between the orthogonal projections of any adjacent first groove and second groove on the plane on which the electrochromic layer is located is b, where b≦a.

[0008] In one embodiment of the present application, the width of the groove is a, the distance between the grooves is b, and the width a of the groove is increased or the distance b of the distance between the grooves is decreased to make the width of the groove larger than the distance, i.e., a≧b. In the process of bending the electrochromic membrane, the larger groove width can provide sufficient residual space required for bending, or the smaller distance between the grooves can reduce the amount of wrinkles in the distance between the grooves, thereby reducing or avoiding the occurrence of wrinkles in the electrochromic membrane, especially at the edges of the electrochromic membrane, and improving the aesthetics of the electrochromic membrane.

[0009] Preferably, the range of b is b≦30mm, more preferably, the range of b is b≧1mm, and furthermore, the range of b is 2mm≦b≦15mm. Usually, the interval region of the groove is the uncut region of the conductive substrate, electrochromic layer, etc. of the electrochromic membrane, and the probability of wrinkles occurring in these regions is higher, and the degree of wrinkles is more serious. If the value of the interval b of the groove is too large, the wrinkles of the electrochromic membrane will be more prominent or serious, and the region of the groove will correspondingly expose the conductive surface of the conductive substrate, for example, the first groove can expose the conductive surface of the second conductive substrate, and the second groove can expose the conductive surface of the first conductive substrate, so if the value of the interval b between the grooves is too small, it is easy to cause the electrical connection of the conductive surfaces on both sides, forming a short circuit. Thus, by limiting the range of the groove spacing b, wrinkles can be effectively reduced or avoided, further preventing the electrochromic membrane from shorting, and improving the aesthetics or the safety and reliability of use of the membrane.

[0010] Preferably, the ratio of a to b is a / b, where 5≦a / b, and preferably, the ratio of a to b is a / b, where 5≦a / b≦50, and the sum of a and b satisfies the relational formula of 90mm≦a+b≦750mm. In this case, the width a of the groove can be further increased or the interval b of the groove can be further decreased to further improve the wrinkle relaxation effect or further reduce the amount of wrinkles, further reduce or avoid the occurrence of wrinkles in the electrochromic membrane, meet the requirements for the wrinkle degree of the electrochromic membrane in different application scenarios, and further improve the aesthetics of the electrochromic membrane.

[0011] Preferably, the thickness of the first conductive substrate and the thickness of the second conductive substrate are both 120 μm or more, and further, the thickness of the first conductive substrate and the thickness of the second conductive substrate are both 150 μm or more, so that the thickness value of the conductive substrate satisfies a specific size, thereby further improving the wrinkle relaxation effect on the electrochromic membrane and further improving the aesthetics of the electrochromic membrane.

[0012] Preferably, the electrochromic membrane has a height H1 along a first direction, and the electrochromic membrane has a height H2 along a second direction, and the product of H1 and H2 is H1×H2≦2500 mm. 2 In some application scenarios, the electrochromic membrane may be curved in multiple directions, for example, the electrochromic membrane forms a hyperboloid structure by curving in two directions, for example, the electrochromic membrane is curved along the first direction to form an arrow height H1, and curved along the second direction to form an arrow height H2, and by restricting the product of the arrow heights of the two directions to be within a certain range, especially when the two directions are further restricted to be perpendicular to each other, the effect of wrinkle relief can be further improved and the aesthetics of the electrochromic membrane can be further improved.

[0013] Preferably, the depth of the first concave groove and the depth of the second concave groove are both h, where 0 < h ≤ 100 mm, and preferably, the range of h is 20 mm ≤ h ≤ 80 mm. Generally, if the depth of the concave groove is too small, the exposed conductive surface of the conductive substrate is small, which is disadvantageous for conductive extraction from the conductive substrate. If the depth of the concave groove is too large, the larger the cut-off electrochromic layer is, the narrower the discoloration region of the electrochromic membrane becomes. Therefore, by limiting the depth of the concave groove within a certain range, not only can a sufficient conductive surface convenient for conductive extraction be ensured, but also it can be ensured that the electrochromic membrane has a sufficiently wide discoloration region, improving the practical area of the film.

[0014] Another aspect of the present invention further provides a discoloring glass including a glass layer and the above-mentioned electrochromic membrane, wherein the electrochromic membrane is laminated between at least two glass layers. Thereby, by laminating the electrochromic membrane between the glass layers, the glass layers can exert a good clamping effect on the electrochromic membrane, further preventing or reducing the generation of wrinkles in the electrochromic membrane, thereby improving the aesthetics of the entire discoloring glass.

Advantages of the Invention

[0015] The technical solution of the present application adjusts the widths of the first concave groove and the second concave groove and the distance between the adjacent first concave groove and the second concave groove, thereby providing a remaining amount of bending space at the edge of the electrochromic membrane by the first concave groove and the second concave groove, greatly reducing or avoiding the occurrence of wrinkles at the edge of the electrochromic membrane, improving the aesthetics of the electrochromic membrane, and improving the visual experience of the user.

[0016] To make the above objects, features, and advantages of the present application clearer and easier to understand, the following preferred embodiments will be given and described in detail with reference to the accompanying drawings.

[0017] In order to more clearly explain the technical solutions of the embodiments of the present application, the following will briefly describe the drawings that need to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings according to these drawings without creative efforts. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a structural schematic diagram of an electrochromic membrane according to some embodiments of the present application at a certain viewing angle. [Diagram 2] FIG. 2 is a structural schematic diagram of an electrochromic membrane according to some embodiments of the present application at a different viewing angle. [Diagram 3] FIG. 2 is a structural schematic diagram of an electrochromic layer in an electrochromic membrane according to some embodiments of the present application at a certain viewing angle. [Figure 4] FIG. 2 is a structural schematic diagram of a first conductive substrate in an electrochromic membrane according to some embodiments of the present application at a certain viewing angle. [Diagram 5] FIG. 2 is a structural schematic diagram of a second conductive substrate in an electrochromic membrane according to some embodiments of the present application at a certain viewing angle. [Figure 6] FIG. 2 is a structural schematic diagram of another structure of an electrochromic membrane according to some embodiments of the present application at a certain viewing angle. [Figure 7] FIG. 7 is a cross-sectional view of the A-A portion of FIG. 6. [Figure 8] FIG. 8 is an enlarged view of part B in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, the embodiments of the present application will be described in detail, and examples of the embodiments are shown in the drawings, and the same or similar reference numerals throughout refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are only intended to explain the present application, and cannot be understood as limiting the present application.

[0020] It should be noted that when an element is referred to as being "fixed" to another element, it may be directly fixed to the other element, or there may be intervening elements present. When an element is referred to as being "connected" to another element, it may be directly connected to the other element, or there may also be intervening elements present. Conversely, when an element is referred to as being "directly" fixed or connected to another element, there are no intermediate elements present. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for purposes of explanation only.

[0021] In this application, unless otherwise clearly specified and limited, the terms "attached", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, may be a fixed connection, a detachable connection, or may be integral, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediate medium, may be an internal communication between two elements, or may be an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific situation.

[0022] Additionally, the terms "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying a relative importance or number of the technical features depicted. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, "plurality" means two or more than two, unless expressly limited otherwise.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in the template specification herein are only for describing specific examples and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more associated items.

[0024] 1 to 5, some embodiments of the present application provide an electrochromic membrane, which is mainly applied in electrochromic fields, such as architectural windows, automobile windows, and airplane windows. The electrochromic membrane 100 includes a first conductive substrate 110, an electrochromic layer 120, and a second conductive substrate 130, which are laminated in order.

[0025] Here, the first conductive substrate 110 and the second conductive substrate 130 both completely cover the electrochromic layer 120 .

[0026] Moreover, the first conductive substrate 110 includes a first substrate layer 112 and a first conductive layer 113 laminated together, and the first conductive layer 113 is laminated between the first substrate layer 112 and the electrochromic layer 120. Here, the first conductive layer 113 completely covers the electrochromic layer 120.

[0027] At the same time, the second conductive substrate 130 includes a laminated second substrate layer 132 and a second conductive layer 133, and the second conductive layer 133 is laminated between the second substrate layer 132 and the electrochromic layer 120. Here, the second conductive layer 133 completely covers the electrochromic layer 120.

[0028] The first conductive layer 113 and the second conductive layer 133 are each used for connecting to an external power source. By connecting the first conductive layer 113 and the second conductive layer 133 to an external power source, an applied electric field is formed between the first conductive layer 113 and the second conductive layer 133, and the electrochromic layer 120 undergoes a stable and reversible color change due to the applied electric field.

[0029] Specifically, a first accommodating groove 111 is provided on an edge of the first conductive substrate 110, a second accommodating groove 131 is provided on an edge of the second conductive substrate 130, and at least two third accommodating grooves 121 are provided on an edge of the electrochromic layer 120.

[0030] In addition, the number of the first accommodating grooves 111 and the second accommodating grooves 131 may be one, two, or any number greater than or equal to two, and can be specifically set according to actual conditions, and the number of the third accommodating grooves 121 may be two, or any number greater than or equal to two.

[0031] Here, the first accommodation groove 111 may be provided on any side of the first conductive substrate 110. Preferably, the first accommodation groove 111 is provided on at least both sides of the first conductive substrate 110, i.e., the first accommodation groove 111 may be provided on any side of the first conductive substrate 110. Preferably, the first accommodation groove 111 is provided on each side of the edge of the first conductive substrate 110. Also, the second accommodation groove 131 may be provided on any side of the second conductive substrate 130. Preferably, the second accommodation groove 131 is provided on at least both sides of the second conductive substrate 130, i.e., the second accommodation groove 131 may be provided on any side of the second conductive substrate 130. Preferably, the second accommodation groove 131 is provided on each side of the edge of the second conductive substrate 130.

[0032] As shown in FIGS. 3 to 5, in this embodiment, the sum of the number of the first accommodating grooves 111 and the number of the second accommodating grooves 131 is equal to the number of the third accommodating grooves 121. As shown in FIG.

[0033] In addition, the orthogonal projection of the first receiving groove 111 on the plane on which the electrochromic layer 120 is located overlaps with at least one of the third receiving grooves 121, and the first receiving groove 111 and the third receiving groove 121 communicate with each other to form a first groove. In this embodiment, one first receiving groove 111 and one third receiving groove 121 communicate with each other to form one first groove 140.

[0034] At the same time, the orthogonal projection of the second accommodating groove 131 on the plane where the electrochromic layer 120 is located overlaps with at least one of the third accommodating grooves 121, and the second accommodating groove 131 and the third accommodating groove 121 communicate with each other to form a second groove 150. In this embodiment, one second accommodating groove 131 and one third accommodating groove 121 communicate with each other to form one second groove 150.

[0035] Specifically, the first grooves 140 and the second grooves 150 are alternately arranged on the edge of the electrochromic membrane 100 .

[0036] 1 and 2, in some embodiments of the present application, the first groove 140 and the second groove 150 are each multiple, and at least one first groove 140 and at least one second groove 150 are provided on each side of the edge of the electrochromic membrane 100. Specifically, the orthogonal projections of the first groove 140 and the second groove 150 on the plane where the electrochromic layer 120 is located are spaced apart from each other, that is, the first groove 140 and the second groove 150 form a groove structure that crosses each other at the edge of the electrochromic membrane 100.

[0037] Here, the width of the first groove 140 and the width of the second groove 150 are both a.

[0038] The width of the first groove 140 is the length of the first groove 140 located on one side of the edge of the electrochromic membrane 100 in a direction perpendicular to the thickness of the electrochromic membrane 100 and parallel to that side.

[0039] The width of the second concave groove 150 is parallel to one side of the edge of the electrochromic membrane 100 and is the length of the second concave groove 150 located on that side in a direction perpendicular to the thickness of the electrochromic membrane 100.

[0040] The distance between the orthographic projections of any adjacent first concave groove 140 and second concave groove 150 on the plane where the electrochromic layer 120 is located is b, and b ≤ a.

[0041] Taking the width of the concave groove as a and the distance between the concave grooves as b, by increasing the width a of the concave groove or decreasing the width b of the distance between the concave grooves, that is, making a ≥ b, in the folding process of the electrochromic membrane, the concave groove with a large width provides sufficient remaining space required for folding, or the small distance between the concave grooves reduces the amount of wrinkles generated in the area of the distance between the concave grooves, and it can be understood that the generation of wrinkles in the electrochromic membrane, especially the generation of wrinkles at the edge of the electrochromic membrane, can be reduced or avoided, and the aesthetic appearance of the electrochromic membrane can be improved.

[0042] In some embodiments of the present application, the range of b is b ≤ 30 mm.

[0043] It should be noted that the distance between the adjacent first concave groove 140 and second concave groove 150 is b > 0.

[0044] Here, the range of b may be any one of 0 < b ≤ 30 mm, 0 < b ≤ 25 mm, 0 < b ≤ 20 mm, 0 < b ≤ 15 mm, 0 < b ≤ 10 mm, 0 < b ≤ 5 mm, 5 ≤ b ≤ 30 mm, 5 ≤ b ≤ 25 mm, 5 ≤ b ≤ 20 mm, 5 ≤ b ≤ 15 mm, 5 ≤ b ≤ 10 mm, 10 ≤ b ≤ 30 mm, 10 ≤ b ≤ 25 mm, 10 ≤ b ≤ 20 mm, 10 ≤ b ≤ 15 mm, 15 ≤ b ≤ 30 mm, 15 ≤ b ≤ 25 mm, 15 ≤ b ≤ 20 mm, 20 ≤ b ≤ 30 mm, 20 ≤ b ≤ 25 mm, or 25 ≤ b ≤ 30 mm.

[0045] In some embodiments of the present application, the range of b is b≧1 mm. It can be understood that the interval b between the adjacent first groove 140 and second groove 150 can be any value greater than 1.

[0046] Preferably, in some embodiments of the present application, the range of b is 2 mm≦b≦15 mm.

[0047] Here, the range of b is: 2mm≦b≦15mm, 3mm≦b≦15mm, 4mm≦b≦15mm, 5mm≦b≦15mm, 6mm≦b≦15mm, 7mm≦b≦15mm, 8mm≦b≦15mm, 9mm≦b≦15mm, 10mm≦b≦15mm, 11mm≦b≦15mm, 12mm≦b≦15mm, 13mm≦b≦15mm, 14mm≦b≦15mm, 2mm≦b≦ The thickness may be any of 13mm, 2mm≦b≦12mm, 2mm≦b≦11mm, 2mm≦b≦10mm, 2mm≦b≦9mm, 2mm≦b≦8mm, 2mm≦b≦7mm, 2mm≦b≦6mm, 2mm≦b≦5mm, 2mm≦b≦4mm, 2mm≦b≦3mm, 3mm≦b≦14mm, 5mm≦b≦13mm, 6mm≦b≦12mm, 7mm≦b≦11mm or 8mm≦b≦10mm.

[0048] Preferably, in some embodiments of the present application, the ratio of a to b is a / b, and is 5≦a / b. Note that the ratio of a to b, a / b, may be any value equal to or greater than 5, and may be specifically set according to actual conditions.

[0049] Specifically, the wrinkle depth of the electrochromic membrane 100 is improved by increasing the ratio of the width a of the first groove 140 and the second groove 150 to the spacing b between adjacent first grooves 140 and second grooves 150.

[0050] Preferably, in some embodiments of the present application, the ratio of a to b is a / b, and 5≦a / b≦50.

[0051] The range of the ratio a / b of a to b is as follows: 5≦a / b≦50, 5≦a / b≦45, 5≦a / b≦40, 5≦a / b≦35, 5≦a / b≦30, 5≦a / b≦25, 5≦a / b≦20, 5≦a / b≦15, 5≦a / b≦10, 10≦a / b≦50, 10≦a / b≦45, 10≦a / b≦40, 10≦a / b≦35, 10≦a / b≦30, 10≦a / b≦25, 10≦a / b≦20, 10≦a / b≦15, 15≦a / b≦50, 15≦a / b≦45, 15≦a / b≦40, 15≦a / b≦35, 15≦a / b≦30, 15≦a / b≦25, 15≦a / b≦20, 20≦a / b≦50, 20≦a / b≦45, 20≦a / b≦40, 20≦a / b≦35, 20≦a / b≦30, 20≦a / b≦25, 25≦a / b≦50, 25≦a / b≦45, 25≦a / b≦40, 25≦a / b≦35, 25≦a / b≦30, 30≦a / b≦50, 30≦a / b≦45, 30≦a / b≦40, 30≦a / b≦35, 35≦a / b≦50, 35≦a / b≦45, 35≦a / b≦40, 40≦a / b≦50, 40≦a / b≦45 or 45≦a / b≦50.

[0052] Preferably, the sum of a and b satisfies the relational expression of 90 mm≦a+b≦750 mm, where the range of a+b is 90 mm≦a+b≦750 mm, 100 mm≦a+b≦750 mm, 150 mm≦a+b≦750 mm, 150 mm≦a+b≦700 mm, 150 mm≦a+b≦650 mm, 150 mm≦a+b≦600 mm, 150 mm≦a+b≦550 mm, 150 mm≦a+b≦500 mm, 150 mm≦ a+b≦450mm, 150mm≦a+b≦400mm, 150mm≦a+b≦350mm, 150mm≦a+b≦300mm, 150mm≦a+b≦250m m, 150mm≦a+b≦200mm, 200mm≦a+b≦750mm, 200mm≦a+b≦700mm, 200mm≦a+b≦650mm, 200mm≦a +b≦600mm, 200mm≦a+b≦550mm, 200mm≦a+b≦500mm, 200mm≦a+b≦450mm, 200mm≦a+b≦400mm, 200mm≦a+b≦350mm, 200mm≦a+b≦300mm, 200mm≦a+b≦250mm, 250mm≦a+b≦750mm, 300mm≦a+ Any of the following may be used: b≦750mm, 350mm≦a+b≦750mm, 400mm≦a+b≦750mm, 450mm≦a+b≦750mm, 500mm≦a+b≦750mm, 550mm≦a+b≦750mm, 600mm≦a+b≦750mm, 650mm≦a+b≦750mm or 700mm≦a+b≦750mm.

[0053] In this embodiment, the range of a / b may be any one of the above ranges, and the range of a+b may be any one of the above ranges.

[0054] [Table 1]

[0055] In Table 1, the thickness of the first conductive substrate and the thickness of the second conductive substrate are both 188 μm.

[0056] The comparative example in Table 1 shows the change in edge wrinkles of the electrochromic membrane 100 when b>a and b>30.

[0057] Specifically, in the comparative example of Table 1, when a=50 mm, the wrinkle depth of the electrochromic membrane 100 gradually decreases as the value of b decreases from 80 to 60. It can be seen that when the widths of the first groove 140 and the second groove 150 do not change, the wrinkle depth of the electrochromic membrane 100 gradually decreases as the distance between the adjacent first groove 140 and second groove 150 gradually decreases.

[0058] In addition, in the comparative example of Table 1, the wrinkle depth of the electrochromic membrane 100 decreases as b decreases, but the wrinkle depth is still large, being 48 mm or more. In other words, in the comparative example, adjusting the spacing b between the adjacent first groove 140 and second groove 150 does not have a significant effect on improving the wrinkle depth at the edge of the electrochromic membrane 100.

[0059] In addition, in the examples of Table 1, the state in which wrinkles at the edge of the electrochromic membrane 100 change when b≦a and 1≦b≦30 is shown.

[0060] Specifically, in the examples of Table 1, when a=88, the wrinkle depth of the electrochromic membrane 100 gradually decreases from 40 mm to 19 mm as the value of b decreases from 30 to 5. In addition, in the examples of Table 1, with the change in b, the wrinkle depth of the electrochromic membrane 100 is smaller than the wrinkle depth of the electrochromic membrane 100 in the comparative example. That is, in the examples of Table 1, when a=88, the wrinkle depth of the electrochromic membrane can be significantly improved by reducing the value of b.

[0061] In addition, in the examples of Table 1, when b was reduced from 8 to 5, the change in wrinkle depth of the electrochromic membrane 100 was reduced from 21 mm to 19 mm. At this time, it can be understood that when the change in wrinkle depth of the electrochromic membrane 100 is small, that is, when b is 8 or less, the improvement effect on the wrinkle depth of the electrochromic membrane with the reduction in the b value is not obvious.

[0062] Therefore, as can be seen from Table 1, in this embodiment, when a=88 and 5≦b≦8, the wrinkle depth of the electrochromic membrane 100 is most improved. That is, when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both 188 μm, a=88 and 5≦b≦8, the wrinkle depth of the electrochromic membrane is most improved.

[0063] Preferably, in some embodiments of the present application, the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both 188 μm, b=8 mm and a=88 mm, and at this time, the improvement against wrinkles of the electrochromic membrane is the best.

[0064] [Table 2] In addition, in Table 2, the width of the first groove 140 and the width of the second groove 150 are both 88 mm, i.e., a = 88 mm, and the distance between adjacent first groove 140 and second groove 150 is 8 mm, i.e., b = 8 mm.

[0065] The comparative example in Table 2 shows the change in wrinkle depth at the edge of the electrochromic membrane 100 when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both gradually increased.

[0066] Specifically, when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both gradually increased from 60 μm to 100 μm, the wrinkle depth at the edge of the electrochromic membrane 100 decreases from 130 mm to 120 mm. The change in thickness is greater than the change in wrinkle depth, and in this case, it can be seen that the improvement in the wrinkle depth of the electrochromic membrane 100 due to the change in the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 is small.

[0067] As shown in the example of Table 2, when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are gradually increased from 125 μm to 188 μm, the wrinkle depth of the edge of the electrochromic membrane 100 decreases from 110 mm to 21 mm. The change in thickness of the electrochromic membrane 100 is 63 μm, and the change in wrinkle depth of the electrochromic membrane 100 is about 89 mm, and the ratio of the change in thickness of the electrochromic membrane 100 to the change in wrinkle depth is about 0.7 and is smaller than 1, that is, by increasing the thickness of the electrochromic membrane, the wrinkles can be significantly improved.

[0068] At the same time, the wrinkle depth of the electrochromic membrane 100 in the examples in Table 2 is smaller than that of the electrochromic membrane 100 in the comparative examples in Table 2. It can be seen that as the thickness of the first conductive substrate 110 and the second conductive substrate 130 gradually increases, the wrinkle depth of the electrochromic membrane becomes smaller, which is a very significant improvement.

[0069] In addition, as shown in the examples of Table 2, when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are gradually increased from 188 μm to 400 μm, the wrinkle depth of the electrochromic membrane is reduced from 21 mm to less than 15 mm. The thickness change amount of the electrochromic membrane 100 is 212 μm, the wrinkle depth change amount of the electrochromic membrane 100 is about 6 mm, and the ratio of the thickness change amount of the electrochromic membrane 100 to the wrinkle depth change amount is about 35, which is much larger than 1. In this case, the wrinkle improvement effect due to the thickness change of the electrochromic membrane 100 is very small.

[0070] When the thickness of the first conductive substrate 110 and the second conductive substrate 130 each reach 188 μm, it can be seen that there is no significant improvement in the wrinkle depth of the electrochromic membrane by continuing to increase the thickness.

[0071] Therefore, as can be seen from Table 2, when a = 88 mm, b = 8 mm, and the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are each 188 μm, the improvement effect on the wrinkle depth of the electrochromic membrane 100 is the highest.

[0072] Preferably, in some embodiments of the present application, the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both 120 μm or more. As can be understood, the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 may be any value equal to or greater than 120 μm, and may be specifically set according to actual circumstances.

[0073] Specifically, as can be seen from Table 2 above, when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both 120 μm to 150 μm, the wrinkle depth of the electrochromic membrane 100 gradually decreases with increasing thickness, but the wrinkle depth is still large, being 60 mm or more in both cases. It can be seen that the wrinkle depth of the electrochromic membrane 100 is improved in this thickness range.

[0074] More preferably, in some embodiments of the present application, the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both 150 μm or more. The thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 may be any value equal to or greater than 150 μm, and may be specifically set according to actual conditions.

[0075] As can be seen from Table 2 above, when the thickness of the first conductive substrate 110 and the thickness of the second conductive substrate 130 are both 150 μm to 188 μm, the wrinkle depth of the electrochromic membrane 100 decreases from 60 to 19, and the change in thickness is 38, and the change in wrinkle depth of the electrochromic membrane 100 is 41, and the ratio of the change in thickness to the change in wrinkle depth is about 0.926, which is smaller than 1. When the first conductive substrate 110 and the second conductive substrate 130 are in this thickness range, the wrinkle depth of the electrochromic membrane 100 gradually decreases, and gradually decreases to 19 mm, and in this case, it can be seen that the wrinkle depth of the electrochromic membrane 100 is reduced to a small value. It can be seen that in this thickness range, the wrinkle depth of the electrochromic membrane 100 is further improved.

[0076] In some embodiments of the present application, the electrochromic membrane 100 has an arrow height H1 along a first direction and an arrow height H2 along a second direction, where the product of H1 and H2 is H1×H2≦2500 mm 2 The following relation is satisfied.

[0077] Specifically, arrow height H1 refers to the curvature height along a first direction of an electrochromic membrane 100 having a length of 1 meter, and arrow height H2 refers to the curvature height along a second direction of an electrochromic membrane 100 having a length of 1 meter.

[0078] Here, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the thickness direction of the electrochromic membrane 100.

[0079] In addition, H1×H2≦2500mm 2 refers to the range of the product of the arrow height H1 along the first direction of the electrochromic membrane and the arrow height H2 along the second direction of the electrochromic membrane in each square meter of the electrochromic membrane 100, where H1 x H2 ≦ 2500 mm 2 It is.

[0080] Specifically, the range of H1×H2 is H1×H2≦2500mm 2 , H1×H2≦2400mm 2 , H1×H2≦2300mm 2 , H1×H2≦2200mm 2 , H1×H2≦2100mm 2 , H1×H2≦2000mm 2 , H1×H2≦1900mm 2 , H1×H2≦1800mm 2 , H1×H2≦1700mm 2 , H1×H2≦1600mm 2 , H1×H2≦1500mm 2 , H1×H2≦1400mm 2 , H1×H2≦1300mm 2 , H1×H2≦1200mm 2 , H1×H2≦1100mm 2 , H1×H2≦1000mm 2 , H1×H2≦900mm 2 , H1×H2≦800mm 2 , H1×H2≦700mm 2, H1×H2≦600mm 2 , H1×H2≦500mm 2 , H1×H2≦400mm 2 , H1×H2≦300mm 2 , H1×H2≦200mm 2 Or H1×H2≦100mm 2 It may be any range within the above range.

[0081] By reducing the arrow height of the electrochromic membrane 100 in the first direction and the second direction, wrinkles that occur at the edges of the electrochromic membrane 100 are alleviated or removed, thereby improving the aesthetic appearance of the electrochromic membrane 100.

[0082] In some embodiments of the present application, the depth of the first groove and the depth of the second groove are both h, and <h≦100mmである。

[0083] The depth of the first groove 140 is equal to the sum of the thickness of the first conductive substrate 110 and the thickness of the electrochromic layer 120, and the depth of the second groove 150 is equal to the sum of the thickness of the second conductive substrate 130 and the thickness of the electrochromic layer 120.

[0084] In some embodiments of the present application, the thickness of the first conductive substrate 110 is equal to the thickness of the second conductive substrate 130 , so that the depth of the first groove 140 is equal to the depth of the second groove 150 .

[0085] Specifically, the range of the value of h may be any of the ranges of 0 < h ≤ 100 mm, 10 mm < h ≤ 100 mm, 20 mm < h ≤ 100 mm, 30 mm < h ≤ 100 mm, 40 mm < h ≤ 100 mm, 50 mm < h ≤ 100 mm, 60 mm < h ≤ 100 mm, 70 mm < h ≤ 100 mm, 80 mm < h ≤ 100 mm, 90 mm < h ≤ 100 mm, 0 < h ≤ 90 mm, 10 mm < h ≤ 90 mm, 20 mm < h ≤ 90 mm, 30 mm < h ≤ 90 mm, 40 mm < h ≤ 90 mm, 50 mm < h ≤ 90 mm, 60 mm < h ≤ 90 mm, 70 mm < h ≤ 90 mm, 80 mm < h ≤ 90 mm, 0 < h ≤ 80 mm, 10 mm < h ≤ 80 mm, 20 mm < h ≤ 80 mm, 30 mm < h ≤ 80 mm, 40 mm < h ≤ 80 mm, 50 mm < h ≤ 80 mm, 60 mm < h ≤ 80 mm, 70 mm < h ≤ 80 mm, 0 < h ≤ 70 mm, 10 mm < h ≤ 70 mm, 20 mm < h ≤ 70 mm, 30 mm < h ≤ 70 mm, 40 mm < h ≤ 70 mm, 50 mm < h ≤ 70 mm, 60 mm < h ≤ 70 mm, 0 < h ≤ 60 mm, 10 mm < h ≤ 60 mm, 20 mm < h ≤ 60 mm, 30 mm < h ≤ 60 mm, 40 mm < h ≤ 60 mm, 50 mm < h ≤ 60 mm, 0 < h ≤ 50 mm, 10 mm < h ≤ 50 mm, 20 mm < h ≤ 50 mm, 30 mm < h ≤ 50 mm, 40 mm < h ≤ 50 mm, 0 < h ≤ 40 mm, 10 mm < h ≤ 40 mm, 20 mm < h ≤ 40 mm, 30 mm < h ≤ 40 mm, 0 < h ≤ 30 mm, 10 mm < h ≤ 30 mm, 20 mm < h ≤ 30 mm, 0 < h ≤ 20 mm, 10 mm < h ≤ 20 mm, or 0 < h ≤ 10 mm, and can be specifically limited according to the actual situation.

[0086] In some embodiments of the present application, the depth of the first concave groove 140 and the depth of the second concave groove 150 are determined by the thickness of the first conductive substrate 110, the thickness of the second conductive substrate 130, and the thickness of the electrochromic layer 120. That is, it can be understood that by increasing or decreasing the thickness of the first conductive substrate 110, the thickness of the second conductive substrate 130, and the thickness of the electrochromic layer 120, the depth of the first concave groove 140 and the depth of the second concave groove 150 can be increased or decreased.

[0087] In some embodiments of the present application, the shape of the electrochromic membrane 100 may be any one of a polygon, a regular polygon, or a different shape, which can be specifically set according to the actual situation.

[0088] Here, the value of a of the electrochromic membrane 100 can correspond to one value, two values, or multiple values. When the value of a of the electrochromic membrane 100 corresponds to only one value, that is, the width of each of the first grooves 140 and the width of each of the second grooves 150 are equal to each other.

[0089] The value of a corresponds to two values, and the two values ​​corresponding to a are defined as a1 and a2, respectively, where a1 ≠ a2, and the range of values ​​of a1 and a2 is equal to the range of values ​​of a. That is, the width of the first groove 140 and the width of the second groove 150 may be any value of a1 and a2.

[0090] The value of a corresponds to multiple numbers, and the multiple numbers corresponding to a are a1, a2...a n where the value of n can be any integer greater than 2, and n The range of values ​​of is equal to the range of values ​​of a.

[0091] The values ​​of the first groove 140 are a1, a2...a n The second groove 150 has a value of a1, a2...a n It can be understood that the value may be any of the values ​​listed above, and may be specifically set according to the actual situation.

[0092] In addition, the value of b of the electrochromic membrane 100 may correspond to one value or multiple values. In addition, when the value of b of the electrochromic membrane 100 corresponds to only one value, that is, the intervals between the orthogonal projections of any adjacent first groove 140 and second groove 150 on the plane where the electrochromic layer 120 is located are all equal.

[0093] The value of b corresponds to multiple numbers, and the multiple numbers corresponding to b are b1, b2...b n where the value of n can be any integer number equal to or greater than 2, and b n The range of values ​​of is equal to the range of values ​​of b. That is, the distance between the orthogonal projections of any adjacent first groove 140 and second groove 150 on the plane on which the electrochromic layer 120 is located is b1, b2, ... b n and can be specifically set according to the actual situation.

[0094] Any wrinkle depth of the electrochromic membrane 100 described in this application refers to the wrinkle depth at the edge of the electrochromic membrane 100.

[0095] As shown in FIGS. 6 to 8, in some embodiments of the present application, a sealant 400 is provided in the circumferential direction of each of the first grooves 140 and in the circumferential direction of each of the second grooves 150. As shown in FIG.

[0096] The second conductive substrate 130 is fixed by a sealing layer provided in the circumferential direction of the first groove 140, and the electrochromic layer 120 facing the first groove 140 is isolated from external air and water, and the first conductive substrate 110 is fixed by a sealing layer provided in the circumferential direction of the second groove 150, and the electrochromic layer 120 facing the second groove 150 is isolated from external air and water, thereby preventing external moisture and oxygen from entering the electrochromic membrane 100 and improving the service life and usage stability of the electrochromic membrane 100.

[0097] It should be noted that the sealant 400 is a high temperature adhesive, which is mainly made of aluminosilicate, inorganic ceramic powder and other components to meet different heat resistance requirements, and has a heat resistance of 200°C to 1800°C.

[0098] As shown in FIG. 7, in some embodiments of the present application, a first bus bar 200 is provided on the edge of the first conductive substrate 110 away from the electrochromic layer 120, and the first bus bar 200 is laminated on the edge of the first conductive substrate 110 away from the electrochromic layer 120.

[0099] Specifically, a portion of the first busbar 200 is located in the first groove 140, and the first busbar 200 located in the first groove 140 forms a "concave" shape in the first groove 140, and the portion of the first busbar 200 located in the first groove 140 adheres to the sealant 400 on the inner wall of the first groove 140, fixing the first busbar 200 via the sealant 400, thereby improving the stability of the first busbar 200 on the first conductive base 110. In addition, the first busbar 200, a portion of which is located at the bottom of the first groove 140, is electrically connected to a portion of the second conductive layer 133 exposed in the first groove 140. At the same time, the sealant 400 can play an insulating support role for the first bus bar 200 and the second bus bar 300, preventing electrical contact between the first bus bar 200 and the second bus bar 300 and preventing the electrochromic membrane 100 from shorting out.

[0100] At the same time, a second bus bar 300 is provided on the edge of the second conductive substrate 130 away from the electrochromic layer 120, and the second bus bar 300 is laminated on the edge of the second conductive substrate 130 away from the electrochromic layer 120.

[0101] Specifically, a portion of the second busbar 300 is located in the second groove 150, and the second busbar 300 located in the second groove 150 forms a "concave" shape in the second groove 150, and the portion of the second busbar 300 located in the second groove 150 adheres to the sealant 400 on the inner wall of the second groove 150, fixing the first busbar 200 via the sealant 400, thereby improving the stability of the first busbar 200 on the first conductive base 110. In addition, the second busbar 300, a portion of which is located at the bottom of the second groove 150, is electrically connected to a portion of the first conductive layer 113 exposed in the second groove 150.

[0102] In addition, by providing a plurality of first grooves and a plurality of second grooves on the edge of the electrochromic membrane, the electrical connection points of the electrochromic membrane can be more uniformly distributed, and the uniformity of the electrical conduction to the first conductive substrate and the second conductive substrate layer can be improved. By connecting the first bus bar 200 and the second bus bar 300 to an external power source, respectively, an applied electric field is formed between the first conductive layer 113 and the second conductive layer 133, and the color change efficiency and stability of the electrochromic membrane 100 are improved.

[0103] Another embodiment of the present application further provides a color-changing glass comprising a glass layer and the electrochromic membrane 100 described in any of the above embodiments.

[0104] Here, the electrochromic membrane 100 is laminated between at least two of the glass layers.

[0105] In this embodiment, the electrochromic membrane 100 is laminated between two layers of glass to form a color changing glass.

[0106] It should be noted that the two glass layers completely cover the electrochromic membrane 100 .

[0107] In all examples shown and described herein, any specific values ​​should be construed as merely exemplary and not limiting, and thus other instances of the example embodiments may have different values.

[0108] In addition, in the following drawings, the same symbols and letters indicate similar items, so that once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0109] The above examples only show some embodiments of the present application, and the explanations are specific and detailed, but do not limit the scope of the present application. However, those skilled in the art may make some modifications and improvements without departing from the spirit of the present application, and all of these are within the scope of protection of the present application. [Explanation of symbols]

[0110] 100: electrochromic membrane, 110: first conductive substrate, 111: first receiving groove, 112: first substrate layer, 113: first conductive layer, 120: electrochromic layer, 121: third receiving groove, 130: second conductive substrate, 131: second receiving groove, 132: second substrate layer, 133: second conductive layer, 140: first groove, 150: second groove, 200: first bus bar, 300: second bus bar, 400: sealant.

Claims

1. 1. An electrochromic membrane comprising: a first conductive substrate, an electrochromic layer, and a second conductive substrate, which are laminated in sequence; a first receiving groove is provided on an edge of the first conductive substrate, a second receiving groove is provided on an edge of the second conductive substrate, and at least two third receiving grooves are provided on an edge of the electrochromic layer; The orthogonal projection of the first accommodating groove on a plane on which the electrochromic layer is located overlaps with at least one of the third accommodating grooves, and the first accommodating groove and the third accommodating groove communicate with each other to form a first concave groove; The orthogonal projection of the second accommodating groove on a plane on which the electrochromic layer is located overlaps with at least one of the third accommodating grooves, and the second accommodating groove and the third accommodating groove communicate with each other to form a second recessed groove; The first grooves and the second grooves are alternately provided on the edge of the electrochromic membrane; The width of the first groove and the width of the second groove are both a, and the interval between the orthogonal projections of any adjacent first groove and second groove on the plane where the electrochromic layer is located is b, and b≦a; An electrochromic membrane characterized by:

2. 2. The electrochromic membrane according to claim 1, wherein the range of b is b≦30 mm.

3. 2. The electrochromic membrane according to claim 1, wherein the range of b is b≧1 mm.

4. 2. The electrochromic membrane according to claim 1, wherein the range of b is 2 mm≦b≦15 mm.

5. 2. The electrochromic membrane according to claim 1, wherein the ratio of a to b is a / b, and 5≦a / b.

6. the ratio of a to b is a / b, and 5≦a / b≦50; Preferably, the sum of a and b satisfies a relational expression of 90 mm≦a+b≦750 mm.

2. The electrochromic membrane according to claim 1 .

7. 2. The electrochromic membrane according to claim 1, wherein the thickness of the first conductive substrate and the thickness of the second conductive substrate are both 120 [mu]m or more.

8. The electrochromic membrane has a height H along a first direction. １ and the height of the electrochromic membrane along the second direction is H ２ and The H １ and the above H ２ The product of this is H １ ×H ２ ≦2500mm ２ and the first direction is perpendicular to the second direction.

2. The electrochromic membrane according to claim 1 .

9. 2. The electrochromic membrane according to claim 1, wherein the depth of the first groove and the depth of the second groove are both h, and 0<h≦100 mm.

10. A glass layer and the electrochromic membrane according to any one of claims 1 to 9, The electrochromic membrane is laminated between at least two of the glass layers. A discolored glass characterized by

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