CN220438721U - Electrochromic film, electrochromic device and end product - Google Patents

Electrochromic film, electrochromic device and end product Download PDF

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CN220438721U
CN220438721U CN202322019905.0U CN202322019905U CN220438721U CN 220438721 U CN220438721 U CN 220438721U CN 202322019905 U CN202322019905 U CN 202322019905U CN 220438721 U CN220438721 U CN 220438721U
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electrochromic film
electrochromic
edge
groove
conductive substrate
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王巍舒
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Guangyi Intelligent Technology Suzhou Co ltd
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Guangyi Intelligent Technology Suzhou Co ltd
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Abstract

The application provides an electrochromic film, an electrochromic device and an end product, wherein the electrochromic film comprises a first conductive substrate, an electrochromic stacked layer and a second conductive substrate which are sequentially stacked; at least two grooves are formed in the edge of the electrochromic film, the width of each groove is a, the distance between every two adjacent grooves is b, and the sum of the width a of each groove located in a local area of the edge of the electrochromic film and the distance b between every two adjacent grooves located in a local area of the edge of the electrochromic film meets the following relation: a+b is more than 0mm and less than or equal to 100mm; the local area of the edge of the electrochromic film is the middle section of the edge of the electrochromic film; and/or the edge of the electrochromic film is provided with a concave area, and the local area of the edge of the electrochromic film is the concave area. The electrochromic diaphragm that this application provided, fold depth is little, user's visual experience feels better.

Description

Electrochromic film, electrochromic device and end product
Technical Field
The application belongs to the technical field of electrochromic, and particularly relates to an electrochromic membrane, an electrochromic device and an end product.
Background
Electrochromic technology is widely used for adjusting light transmittance or reflectance of a bulletin device such as a display, a large poster or a message board, an intelligent window, a window glass for a building, an automobile mirror, a flexible display, an automobile sunroof, a sports glasses, etc., and recently, has been found to have an infrared shielding effect in addition to discoloration in a visible light region, and has been attracting attention as an application prospect of energy saving products.
Taking the application of electrochromic films in automobile glass as an example, most of the automobile glass has a certain curvature, and the current trend is that the larger the automobile skylight glass is, the larger the curvature of the glass is. The electrochromic film is a sheet-shaped flexible film with small thickness, and when the electrochromic film is laminated and laid on the curved surface of glass with large curvature, the curved surface inevitably causes folds to occur in certain areas of the electrochromic film close to the edge. The portion where the wrinkles appear affects the performance of the electrochromic film, and the wrinkles are visible to the naked eye, and the appearance is not beautiful enough to be acceptable to users.
Disclosure of Invention
An aim of the embodiment of the application is to provide an electrochromic device of an electrochromic membrane and a terminal product, so as to solve the technical problems that the appearance of wrinkles of the electrochromic membrane in the prior art affects the beauty and visual experience. To achieve the above object, a first aspect of the present application provides an electrochromic film comprising a first conductive substrate, an electrochromic stack layer, and a second conductive substrate laminated in this order; at least two grooves are formed in the edge of the electrochromic film, the width of each groove is a, the distance between every two adjacent grooves is b, and the width a of each groove located in a local area of the edge of the electrochromic film and the distance b between every two adjacent grooves located in a local area of the edge of the electrochromic film meet the following relation: a+b is more than 0mm and less than or equal to 100mm; wherein at least one of the grooves is a first groove through the first conductive substrate and the electrochromic stack layer, and at least one of the grooves is a second groove through the second conductive substrate and the electrochromic stack layer; and, a localized area of the edge of the electrochromic film includes a mid-section portion of the edge of the electrochromic film; and/or, a concave area is formed on the edge of the electrochromic film, and a local area of the edge of the electrochromic film comprises the concave area.
Related studies have shown that electrochromic films with curved surfaces, especially hyperbolic or multi-curved electrochromic films, do not wrinkle or severely wrinkle at all edge locations. The region where wrinkles or severe wrinkles are generated is usually located at a middle portion of the edge of the electrochromic film or, when there is a depressed area at the edge of the electrochromic film, for example, at a middle portion or edge portion of the edge of the electrochromic film, the region where wrinkles or severe wrinkles are generated is often located in the depressed area. Therefore, in the first aspect of the application, by defining the sum of the width a of the groove located in a local area (for example, a middle section part of the edge of the electrochromic film or/and a concave area of the edge of the electrochromic film) and the interval b between adjacent grooves to satisfy a specific range, that is, defining the sum of the width of the groove and the interval length between adjacent grooves within a certain range, the effect of increasing the number of grooves and intervals of the edge of the electrochromic film in the same unit length can be achieved, and especially the number of grooves can be increased, thereby being beneficial to reducing wrinkles of the edge of the electrochromic film, improving the aesthetic degree of the electrochromic film and improving the visual experience of users.
Preferably, the first grooves and the second grooves are alternately distributed on the edge of the electrochromic film. More preferably, a distance between adjacent first grooves and second grooves is b. Under the condition, the first grooves and the second grooves are alternately distributed, so that more uniform grooves can be formed at the edge of the electrochromic film, stress generated at the edge of the electrochromic film can be released more effectively through the grooves, for example, stress generated by the first conductive substrate and the second conductive substrate can be released synchronously by the first grooves and the second grooves, wrinkles at the edge of the electrochromic film can be relieved more effectively, the wrinkles degree of local areas is reduced, wrinkles generated in the local areas are avoided, the appearance attractiveness of the electrochromic film is further improved, the electrochromic film is prevented from falling off due to the wrinkles or the occurrence of the problems that the color changing performance is influenced, and the like is further effectively improved, and the visual experience of a user is further improved.
Optionally, the width a of the groove outside the localized area of the edge of the electrochromic film and the spacing b between the adjacent grooves outside the localized area of the edge of the electrochromic film satisfy the following relationship: a+b is more than 0mm and less than or equal to 100mm. Therefore, the folds of other areas except the local areas at the edge of the electrochromic film can be reduced or prevented, so that the overall aesthetic degree of the electrochromic film is further improved; in addition, all areas of the edge of the electrochromic diaphragm meet the requirement that a+b is smaller than or equal to 100mm, for example, the values of a and b of all areas are kept consistent, the preparation process of the groove can be simplified, the processing efficiency of the electrochromic diaphragm is improved, and the time cost is reduced.
Preferably, the width a of the groove outside the partial region of the edge of the electrochromic film and the interval b between the adjacent grooves outside the partial region of the edge of the electrochromic film satisfy the following relationship: a+b > 100mm. In general, wrinkles are not easily generated or seriously generated in a part other than a local area of the edge of the electrochromic film, so that the width of a groove and the distance between adjacent grooves in the area are not required to be limited particularly, for example, 0mm < a+b is not required to be satisfied and is not greater than 100mm, and a+b is required to be greater than 100mm, thereby the values of a and b can be designed in a diversified manner according to the actual situation, and the applicability of the electrochromic film is improved.
Preferably, the distance b between the adjacent grooves in the local area of the edge of the electrochromic film is in the range of: b is more than or equal to 0 and less than or equal to 30mm. More preferably, the distance b between the adjacent grooves in the local area of the edge of the electrochromic film is in the range of: b is more than or equal to 2mm and less than or equal to 30mm. In general, the interval between adjacent grooves is the uncut area of electrochromic diaphragm, when this interval is too big, can make the width of uncut area too big, and the fold that its produced is more obvious and be difficult for being released by the groove, when this interval is too little, can make the width of uncut area too little, through the phenomenon such as the easy emergence switch-on electrical connection of extrusion between the adjacent groove even take place short circuit to be unfavorable for the management and control to electrochromic diaphragm discoloration process. Therefore, the interval b between the adjacent grooves is in a certain range, so that the alleviation of the edge wrinkles of the electrochromic film can be more facilitated, or the situation that the adjacent grooves are electrically connected in a conducting way can be avoided, and even the alleviation of the edge wrinkles of the electrochromic film is facilitated, and the electrically connected between the adjacent grooves in a conducting way is avoided.
Preferably, the width a of the groove located in the local area of the edge of the electrochromic film and the distance b between the adjacent grooves located in the local area of the edge of the electrochromic film are respectively in the following ranges: a is more than or equal to 15mm and less than or equal to 40mm; b is more than or equal to 5mm and less than or equal to 30mm. In general, the width a of the groove is a cut area of the electrochromic film, when the width a is too small, the effect of relieving wrinkles on the electrochromic edge is poor, and when the width a is too large, the number of the grooves on the edge of the electrochromic film is reduced in the same unit length, and the edge wrinkles are not relieved; the interval b between adjacent grooves is an uncut area of the electrochromic film, when the interval b is too large, the width of the uncut area is too large, in the same unit length, the width a of the grooves of the cut area is too small, and the edge wrinkles of the electrochromic film are not easy to release, when the interval b is too small, the width of the uncut area is too small, the first conductive layer and the second conductive layer are easy to conduct through extrusion between the adjacent grooves, short circuit and the like are easy to occur, and therefore the control of the electrochromic film color changing process is not facilitated. Therefore, the width a of the grooves and the interval b between the adjacent grooves are limited in a certain range, so that the grooves can be ensured to be enough in width and the quantity of the grooves can meet certain requirements, thereby being more beneficial to relieving the wrinkles at the edges of the electrochromic film, avoiding the occurrence of short circuits caused by conducting electric connection between the adjacent grooves, improving the aesthetic degree of the electrochromic film and improving the use stability and reliability of the electrochromic film.
Preferably, the sum of the width a of the groove located at the partial region of the edge of the electrochromic film and the interval b between the adjacent grooves located at the partial region of the edge of the electrochromic film satisfies the following relationship: a+b is more than or equal to 20mm and less than or equal to 40mm. In general, the purpose of providing grooves at the edge of the electrochromic film is to introduce external current or voltage to the first conductive substrate and the second conductive substrate to form an electric field at two sides of the electrochromic stacked layer, so as to drive ions or electrons in the electrochromic stacked layer to move, thereby realizing the adjustment of the color or the light transmittance of the electrochromic film, and the more the grooves are, the more uniform the distribution of the grooves is, especially the more uniform the distribution of the first grooves and the second grooves is, the more uniform the color change rate or the light transmittance change rate of the electrochromic film is; the length of the edge of the electrochromic film is limited, when the width of a single groove is too large, the formation of a plurality of grooves on the edge of the electrochromic film is not facilitated, and particularly, the formation of a plurality of uniformly distributed first grooves and second grooves is not facilitated, therefore, when the sum of the width a of the grooves of a local area and the distance b between adjacent grooves is limited to be 20mm less than or equal to a+b less than or equal to 40mm, the effect of relieving or eliminating wrinkles of the local area can be achieved, the uniform arrangement of the grooves can be facilitated, the color changing uniformity and the like of the electrochromic film can be ensured while the attractiveness of the electrochromic film is improved, and the use experience of a user is further improved.
Preferably, the width a of the groove located in the local area of the edge of the electrochromic film and the distance b between the adjacent grooves located in the local area of the edge of the electrochromic film are respectively: a=20mm, b=20mm. Therefore, the wrinkle in the local area of the edge of the electrochromic diaphragm can be relieved or eliminated better, and the uniform arrangement of a plurality of grooves on the edge of the electrochromic diaphragm is facilitated, so that the color change uniformity of the electrochromic diaphragm is improved, and the use experience of a user is fully improved.
Optionally, the depth of the groove is h, wherein the range of the value of h is: h is more than 0 and less than or equal to 100mm. Preferably, the depth of the first groove and the depth of the second groove are h, wherein h is more than 0mm and less than or equal to 100mm. In the direction that the groove extends from the edge of the electrochromic film to the center of the electrochromic film, the length of the groove is the depth of the groove, and the greater the depth of the groove is, the greater the width of the electrochromic stack layer is, which is cut off by the edge, the smaller the area of the electrochromic stack layer is, so that the color changing area of the electrochromic film is reduced; therefore, by limiting the depth of the groove to the above-described interval range, it is possible to ensure that the color change area of the electrochromic film is sufficiently large.
Preferably, a first bus bar is arranged at the edge of one side of the first conductive substrate far away from the electrochromic stack layer, and a partial area of the first bus bar is arranged along a first groove wall of the first groove and is attached to one side of the second conductive substrate near the electrochromic stack layer; the edge of one side of the second conductive substrate far away from the electrochromic stack layer is provided with a second bus bar, and a partial area of the second bus bar is arranged along a second groove wall of the second groove and is attached to one side of the first conductive substrate layer close to the electrochromic stack layer. Therefore, the first bus bar and the second conductive substrate are electrically connected, external current or voltage can be quickly introduced to the second conductive substrate through the first bus bar, and the second bus bar and the first conductive substrate are electrically connected, so that external current and voltage can be quickly introduced to the first conductive substrate through the second bus bar, the speed of the external current or voltage conducted to the first conductive substrate and the second conductive substrate is improved, and the color changing speed or the light transmittance changing speed of the electrochromic film is improved.
Preferably, the first grooves form two opposite first side walls on the first conductive substrate, and the partial areas of the first bus bars close to the first side walls are obliquely arranged; the second grooves form two opposite second side walls on the second conductive substrate, and partial areas of the second bus bars, which are close to the second side walls, are obliquely arranged. More preferably, the first conductive substrate includes a first base layer and a first conductive layer, wherein the first conductive layer is disposed between the first base layer and the electrochromic stack layer, and a partial region of the first bus bar, which is close to the first sidewall, is disposed obliquely to block an electrical connection between the first bus bar and the first conductive layer; the second conductive substrate comprises a second substrate layer and a second conductive layer, wherein the second conductive layer is arranged between the second substrate layer and the electrochromic stack layer, and a partial area, close to the second side wall, of the second bus bar is obliquely arranged so as to block electric connection between the second bus bar and the second conductive layer. Therefore, through the inclined arrangement of the first bus bar, the distance between the first bus bar and the first conductive layer can be increased, and the possibility of electric connection between the first bus bar and the first conductive layer is reduced or prevented, so that the first conductive layer and the second conductive layer are prevented from forming short-circuit electric connection through the first bus bar; similarly, by the inclined arrangement of the second bus bar, the distance between the second bus bar and the second conductive layer can be increased, and the possibility of electric connection between the second bus bar and the second conductive layer is reduced or prevented, so that the first conductive layer and the second conductive layer are prevented from forming short-circuit electric connection through the second bus bar, and the use safety and reliability of the electrochromic film are improved.
Preferably, the first groove forms two opposite first side walls on the first conductive substrate, an insulating glue is disposed between the first bus bar and the first side walls, the second groove forms two opposite second side walls on the second conductive substrate, and an insulating glue is disposed between the second bus bar and the second side walls. More preferably, the first groove forms two opposite first side walls on the first conductive substrate, a blocking portion is disposed on the outer side of the first side walls, and the second groove forms two opposite second side walls on the second conductive substrate, and a blocking portion is disposed on the outer side of the second side walls. Therefore, through the arrangement of the insulating glue or the blocking part, the electric connection between the first bus bar and the first conductive layer can be more effectively prevented, and/or the electric connection between the second bus bar and the second conductive layer can be more effectively prevented, so that the situations of short circuit and the like of the electrochromic diaphragm are avoided, and the use safety and reliability of the electrochromic diaphragm are further improved.
Preferably, the thickness of the first conductive substrate is greater than or equal to 120 μm; and/or, the thickness of the second conductive substrate is greater than or equal to 120 μm. The thicker the thicknesses of the first and second conductive substrates, the larger the spaces of the first and second grooves in the thickness direction of the electrochromic film, and thus, by making the thickness of the conductive substrates satisfy a specific range, sufficient space can be provided for the edge extension of the electrochromic film, thereby slowing down or avoiding the generation of wrinkles.
Preferably, the electrochromic film has a camber H in the first direction 1 The camber of the electrochromic film along the second direction is H 2 Wherein the first direction and the second direction are perpendicular to each other, and the camber H of the first direction 1 A camber H with the second direction 2 The product satisfies the following relationship: h 1 ×H 2 ≤2500mm 2 /m 4 . In general, the greater the camber of the electrochromic film, the greater the possibility that the edge of the electrochromic film will wrinkle, or the more serious the wrinkles formed at the edge of the electrochromic film (deeper wrinkles or more wrinkles, etc.), therefore, by limiting the camber of the electrochromic film within a certain range, the effect of relieving the wrinkles at the edge of the electrochromic film can be further achieved, thereby further improving the aesthetic quality of the electrochromic film.
A second aspect of the present application provides an electrochromic device comprising a substrate layer and an electrochromic film as described above, the substrate layer being disposed in a stack with the electrochromic film.
In the second aspect of the application, since the electrochromic device comprises the electrochromic film, the wrinkles of the electrochromic device can be effectively relieved or eliminated, so that the electrochromic device has more attractive appearance, higher user acceptance and better visual experience; and the substrate layer can also play a bearing or protecting role on the electrochromic film.
Optionally, the substrate layer comprises at least two layers, and the electrochromic film is disposed between at least two of the substrate layers. Preferably, the substrate layer is a glass layer. Therefore, by arranging at least two substrate layers, the electrochromic film can be arranged between the substrate layers, so that a more comprehensive and effective bearing or protecting effect is formed on the electrochromic film; and by arranging the substrate layer as a glass layer, the electrochromic device can have enough rigidity strength, prevent deformation and the like, so as to better protect or bear the electrochromic film.
A third aspect of the present application provides an end product comprising an electrochromic film as described above, and/or an electrochromic device as described above, wherein the end product comprises any one of a rear view mirror, a curtain wall, a sunroof, a side window of an automobile, a windshield of an automobile, a housing of an electronic product, glasses, a vehicle, and a display panel.
In the third aspect of the application, since the end product includes the electrochromic film, wrinkles of the end product can be effectively relieved or eliminated, so that the aesthetic degree of the end product is improved, and the visual experience of a user is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electrochromic film according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a second electrochromic film provided in an embodiment of the present application;
FIG. 3 is a schematic structural view of an electrochromic film according to another embodiment of the present application;
FIG. 4 is a front view of the device shown in FIG. 1;
FIG. 5 is a cross-sectional view of an edge of the electrochromic film shown in FIG. 4;
FIG. 6 is a schematic structural view of an electrochromic film according to another embodiment of the present application;
FIGS. 7 (a) and 7 (b) are cross-sectional views of the edges of electrochromic films provided in yet another embodiment of the present application;
FIG. 8 is a schematic diagram I of the structure shown in FIG. 2;
FIG. 9 is a schematic view of the first direction of FIG. 8;
FIG. 10 is a schematic view of the second direction of FIG. 5;
fig. 11 is a schematic structural diagram of an electrochromic device according to an embodiment of the present application.
Wherein, the reference numerals illustrate:
10. an electrochromic film; 100. a recessed region; 101. a middle section portion; 11. a first conductive substrate; 110. a first groove; 1101. a first sidewall; 1102. a first groove wall; 1103. a third sidewall; 111. a first substrate layer; 112. a first conductive layer; 12. electrochromic stack layers; 121. an electrochromic layer; 122. an electrolyte layer; 123. an ion storage layer; 13. a second conductive substrate; 130. a second groove; 1301. a second sidewall; 1302. a second groove wall; 1303. a fourth sidewall; 131. a second substrate layer; 132. a second conductive layer; 14. a first bus bar; 15. a second bus bar; 16. insulating glue; 17. a blocking portion; 20. and a glass layer.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be 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 be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
In addition, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise. "plurality" means two and more.
The embodiment of the present application provides an electrochromic film 10, as shown in fig. 1 to 5, the electrochromic film 10 includes a first conductive substrate 11, an electrochromic stack layer 12, and a second conductive substrate 13, which are sequentially stacked.
In some embodiments, as shown in fig. 4, at least two grooves are formed on the edge of the electrochromic film 10, the width of each groove is a, the interval between adjacent grooves is b, wherein the width a of each groove located in a partial area of the edge of the electrochromic film 10 and the interval b between adjacent grooves located in a partial area of the edge of the electrochromic film 10 satisfy the following relationship: a+b is more than 0mm and less than or equal to 100mm. Wherein at least one recess is a first recess 110 through the first conductive substrate 11 and the electrochromic stack layer 12 and at least one recess is a second recess 130 through the second conductive substrate 13 and the electrochromic stack layer 12.
In some embodiments, as shown in fig. 3, a localized area of the edge of electrochromic film 10 includes a midsection portion 101 of the edge of electrochromic film 10. The middle section here refers to the partial area at the edge of the electrochromic film, which is not near the corners of the electrochromic film, it being understood that the area where the middle section may be is only schematically indicated in fig. 3. Illustratively, when the electrochromic film 10 is a rectangular film, the edges thereof are the four sides of the rectangle, and the middle portion of the edges refers to the region other than the four corners of the rectangle; similarly, when the electrochromic film 10 is triangular, the edges thereof are three sides of the triangle, and the middle section is a region other than the three corners.
Of course, the specific position of the middle section can be adjusted according to the actual situation, for example, the electrochromic film has a plurality of sides, but the middle section is only located at the corresponding position of one or more sides of the electrochromic film. In addition, the length of the middle section, etc. may also be adjusted, for example, by bringing the ends of the middle section closer to the corner regions of the electrochromic film to form a longer middle section, or by bringing the ends of the middle section farther from the corner regions of the electrochromic film to form a shorter middle section, etc.
In some embodiments, the middle portion 101 of the edge of the electrochromic film 10 may correspond to a partial area of the edge of the electrochromic film where wrinkles or wrinkles are more severe. In other embodiments, the mid-section portion 101 of the edge of the electrochromic film 10 may correspond to all areas of the edge of the electrochromic film that are non-corner areas.
In other embodiments, the edge of electrochromic film 10 is formed with recessed areas 100, and localized areas of the edge of electrochromic film 10 include recessed areas 100. The recess region 100 may be formed by recessing the edge of the electrochromic film toward the center of the electrochromic film, or may be formed by partially cutting the edge of the electrochromic film. The concave region 100 may be located at the middle portion 101 of the edge of the electrochromic film 10, or may be located at the corner region of the edge of the electrochromic film 10, or as shown in fig. 1, the concave region 100 may be located at both the middle portion 101 and the corner region of the edge of the electrochromic film 10.
In still other embodiments, the recessed region 100 may be located only in the corner regions of the electrochromic film 10. The region where wrinkles occur or more serious may occur at the same time at the recess region 100 and the middle portion 101 of the edge of the electrochromic film 10, and thus, at this time, a partial region of the electrochromic film 10 may include both the recess region 100 and the middle portion 101 of the edge of the electrochromic film 10. Therefore, the wrinkles generated at the edge of the electrochromic film can be relieved or eliminated more effectively, and the overall attractiveness of the electrochromic film is improved more effectively.
Notably, the spacing of adjacent grooves, b, may include the following three cases: in some embodiments, when adjacent grooves are the first groove 110 and the second groove 130, the pitch of the adjacent grooves is b, which is the pitch between the adjacent first groove 110 and the second groove 130. In other embodiments, when adjacent grooves are all the first grooves 110, the pitch between adjacent grooves is b. In still other embodiments, when adjacent grooves are all second grooves 130, the pitch of adjacent grooves is b, which is the pitch between adjacent second grooves 130.
As shown in fig. 2, it has been shown through the related studies that electrochromic film 10 having a curved surface, particularly, hyperbolic or multi-curved electrochromic film 10, may not be wrinkled or severely wrinkled at all edge positions. The areas where wrinkles or severe wrinkles are generated are typically only localized areas of the edge of the electrochromic film 10. The localized area may be, for example, a middle section 101 located at the edge of the electrochromic film 10 as shown in fig. 3, or the localized area may be a recessed area 100 when there is a recessed area 100 in the middle section 101 and/or corner area of the edge of the electrochromic film 10, for example, as shown in fig. 2, the localized area may be a recessed area 100, and the recessed area 100 may be located at the middle section 101 or corner area of the edge of the electrochromic film 10 at the same time.
In applications, in order to adapt to curved glass with different curvatures, different shapes or areas with different curvatures of the same curved glass, and according to the requirements of structural design, the edge of the electrochromic film 10 may form a concave area 100, where the concave area 100 is usually located at a middle part position and/or a corner position of the edge of the electrochromic film 10. The inventors have found that not all edge locations of electrochromic film 10 may be wrinkled or severely wrinkled; further investigation has shown that wrinkles may occur in just some localized areas, such as the recessed area 100 and mid-section locations of the uncut edges.
The first grooves 110 and the second grooves 130 are alternately formed on the edge of the electrochromic film 10, so that enough space allowance is provided for the edge of the electrochromic film 10 to extend, and the effect of relieving wrinkles is achieved. Further, the widths a of the first and second grooves 110 and 130 and the interval b between the first and second grooves 110 and 130 in the "wrinkle-generated disaster area" (i.e., the depression area 100, the middle section 101 of the edge of the electrochromic film 10) are defined such that the sum of a, b is in the interval range of 0mm to 100 mm; the effect of increasing the number of the grooves and the intervals of the edge of the electrochromic film 10 in the same unit length can be achieved, and particularly, the number of the grooves can be increased, so that the wrinkles of the edge of the electrochromic film can be reduced, the attractiveness of the electrochromic film 10 can be improved, and the visual experience of a user can be improved.
Specifically, the widths a and the intervals b of the first groove 110 and the second groove 130 located in the concave region 100 are defined in this way, and the generation of wrinkles is relieved more pertinently, so that the aesthetic property of the electrochromic film 10 is improved, and the visual experience of a user is improved. And the first groove 110 and the second groove 130 are respectively positioned at two sides of the electrochromic stack layer 12, so that sufficient space allowance is increased from the thickness direction of the electrochromic film 10 for bending and stretching, and the generation of wrinkles is greatly reduced.
In some embodiments, as shown in fig. 4 to 6, the first groove 110 and the second groove 130 are provided in plurality, respectively. Thus, by disposing the first grooves 110 and the second grooves 130, on one hand, the first grooves 110 and the second grooves 130 can expose the conductive surfaces of the first conductive substrate 11 and the second conductive substrate 13, and the conductive surfaces can be led out to connect with an external power supply, so as to increase the electrical conduction rate of the electrochromic film 10; on the other hand, the plurality of grooves can provide more space margin for bending the electrochromic film 10, so as to further improve the effect of wrinkle alleviation, and further reduce or avoid the generation of wrinkles on the electrochromic film 10.
In application, the width of the groove is a, meaning that the width of the first groove 110 and the width of the second groove 130 are both a. Specifically, the width of the first groove 110 and the width of the second groove 130 are a, respectively, and a refers to a range value. It is representative that the width of the first groove 110 and the width of the second groove 130 are within the same range a, and in a specific embodiment, the width of the first groove 110 and the width of the second groove 130 may be the same or different. Similarly, the distance between the first groove 110 and the second groove 130 is b, where the distance b is also a range value. The spacing b in the same embodiment may be the same value or may be a different value. For example, the electrochromic films 10 have different lengths on different sides, and the values of a and b are different, so that a and b in the same electrochromic film 10 can be correspondingly provided with a plurality of values.
It should be noted that, as shown in fig. 4 to 6, along a direction parallel to a side of the electrochromic film 10, the first groove 110 is formed on the side, and one first groove 110 forms two opposite first sidewalls on the first conductive substrate 11, and a distance between the two opposite first sidewalls is a width a of the first groove 110. Similarly, the second grooves 130 are formed on the second conductive substrate 13 with two opposite second sidewalls, and the width a of the second grooves 130 refers to the distance between the two opposite second sidewalls. The spacing b between adjacent first and second grooves 110, 130 refers to the perpendicular distance of one first sidewall to the plane of the adjacent second sidewall (i.e., the spacing between the orthographic projections of the adjacent first and second grooves 110, 130 in the plane of the electrochromic stack 12). Fig. 5 shows one side of the first conductive substrate 11 in the electrochromic film 10, the solid line is the edge of the first conductive substrate 11, and the dotted line means the second groove 130 formed in the second conductive substrate 13. Similarly, fig. 4 may also show one side of the second conductive substrate 13, and then the solid line is the edge of the second conductive substrate 13, and the dotted line is the edge of the first conductive substrate 11.
In some embodiments, as shown in fig. 1, both the first conductive substrate 11 and the second conductive substrate 13 completely cover the electrochromic stack layer 12. In addition, the first conductive substrate 11 includes a first base layer 111 and a first conductive layer 112 stacked, and the first conductive layer 112 is provided between the first base layer 111 and the electrochromic stack layer 12. Wherein the first conductive layer 112 completely covers the electrochromic stack layer 12.
Meanwhile, the second conductive substrate 13 includes a second substrate layer 131 and a second conductive layer 132 stacked, and the second conductive layer 132 is disposed between the second substrate layer 131 and the electrochromic stack layer 12. Wherein the second conductive layer 132 completely covers the electrochromic stack layer 12.
The electrochromic stack layer 12 includes an electrochromic layer 121, an electrolyte layer 122, and an ion storage layer 123, which are sequentially stacked; specifically, the first conductive layer 112 is connected to the electrochromic layer 121, and the first conductive layer 112 completely covers the electrochromic layer 121; the second conductive layer 132 is connected to the ion storage layer 123, and the second conductive layer 132 completely covers the ion storage layer 123, and the electrolyte layer 122 is disposed between the electrochromic layer 121 and the ion storage layer 123. In other embodiments, the first conductive layer 112 may also be connected to the ion storage layer 123, and the second conductive layer 132 is connected to the electrochromic layer 121.
The first conductive layer 112 and the second conductive layer 132 are used for connection to an external power source, respectively. By connecting the first conductive layer 112 and the second conductive layer 132 to external power sources respectively, an external electric field is formed between the first conductive layer 112 and the second conductive layer 132, so that the electrochromic stack layer 12 is subjected to stable and reversible color change under the action of the external electric field.
In some embodiments, as shown in fig. 5 and 6, the first grooves 110 and the second grooves 130 are alternately distributed at the edge of the electrochromic film 10. In other embodiments, the spacing between the first groove 110 and the second groove 130 is b. In this way, more uniform grooves can be formed at the edge of the electrochromic film 10, so that the grooves can release the stress effect generated at the edge of the electrochromic film 10 more effectively, for example, the stress generated by the first conductive substrate 11 and the second conductive substrate 13 can be released by the first groove 110 and the second groove 130 simultaneously, so that the wrinkles at the edge of the electrochromic film 10 can be relieved more effectively, the wrinkles degree of local areas can be reduced, and even the wrinkles generated in the local areas can be avoided, so that the appearance attractiveness of the electrochromic film 10 is further improved, the electrochromic film 10 is prevented from falling off due to the wrinkles or the problems of affecting the color changing performance and the like are more effectively prevented, and the visual experience of users is further improved.
In some embodiments, the width a of a groove outside the localized area and the spacing b between adjacent grooves outside the localized area satisfy the following relationship: a+b is more than 0mm and less than or equal to 100mm. In other embodiments, the width a of a groove located outside the partial region and the pitch b between adjacent grooves located outside the partial region satisfy the following relationship: a+b > 100mm.
In some embodiments, the spacing b between adjacent grooves in a localized region of the edge of electrochromic film 10 ranges from: b is more than or equal to 0 and less than or equal to 30mm. In other embodiments, the spacing b between adjacent grooves in a localized region of the edge of electrochromic film 10 can be in the range of: b is more than or equal to 2mm and less than or equal to 30mm. In general, the interval between adjacent grooves is the uncut area of electrochromic diaphragm, when this interval is too big, can make the width of uncut area too big, and the fold that its produced is more obvious and be difficult for being released by the groove, when this interval is too little, can make the width of uncut area too little, through the phenomenon such as the easy emergence switch-on electrical connection of extrusion between the adjacent groove even take place short circuit to be unfavorable for the management and control to electrochromic diaphragm discoloration process. Therefore, the interval b between the adjacent grooves is in a certain range, the alleviation of the edge wrinkles of the electrochromic film can be more facilitated, the attractiveness of the electrochromic film and the visual experience of users are improved, or the situation that conduction electrical connection and the like occur between the adjacent grooves can be avoided, and even the alleviation of the edge wrinkles of the electrochromic film is facilitated, the occurrence of conduction electrical connection between the adjacent grooves to form a short circuit is avoided, so that the use safety and the reliability of the electrochromic film are improved.
In other embodiments, the distance b between adjacent grooves in a localized area of the edge of electrochromic film 10 may also be any of the following intervals: 1mm < b.ltoreq.30 mm, 2mm < b.ltoreq.30 mm, 3mm < b.ltoreq.30 mm, 4mm < b.ltoreq.30 mm, 5mm < b.ltoreq.30 mm, 6mm < b.ltoreq.30 mm, 7mm < b.ltoreq.30 mm, 8mm < b.ltoreq.30 mm, 9mm < b.ltoreq.30 mm, 10mm < b.ltoreq.30 mm, 11mm < b.ltoreq.30 mm, 12mm < b.ltoreq.30 mm, 13mm < b.ltoreq.30 mm, 14mm < b.ltoreq.30 mm, 15mm < b.ltoreq.30 mm, 16mm < b.ltoreq.30 mm, 17mm < b.ltoreq.30 mm, 18mm < b.ltoreq.30 mm, 19mm < b.ltoreq.30 mm, 20mm < b.ltoreq.30 mm, 21mm < b.ltoreq.30 mm, 22mm < b.ltoreq.30 mm, 24mm < b.ltoreq.30 mm, 25mm < b.ltoreq.30 mm, 26mm < b.ltoreq.30 mm, 27mm, 28mm < b.ltoreq.30 mm. B is more than 29mm and less than or equal to 30mm, b is more than or equal to 2mm and less than or equal to 29mm, b is more than or equal to 2mm and less than or equal to 28mm, b is more than or equal to 2mm and less than or equal to 27mm, b is more than or equal to 26mm, b is more than or equal to 2mm and less than or equal to 25mm, b is more than or equal to 24mm, b is more than or equal to 2mm and less than or equal to 23mm, b is more than or equal to 2mm and less than or equal to 22mm, b is more than or equal to 2mm and less than or equal to 21mm, b is more than or equal to 20mm, b is more than or equal to 2mm and less than or equal to 19mm, b is more than or equal to 2mm and less than or equal to 18mm, b is more than or equal to 2mm and less than or equal to 27mm, b is less than or equal to 26mm, b is less than or equal to 2mm and less than or equal to 2mm, b is less than or less.2.2.2.2.less and less.2.2.2.less.2.2. b is more than or equal to 2mm and less than or equal to 16mm, b is more than or equal to 2mm and less than or equal to 15mm, b is more than or equal to 2mm and less than or equal to 14mm, b is more than or equal to 2mm and less than or equal to 13mm, b is more than or equal to 2mm and less than or equal to 12mm, b is more than or equal to 2mm and less than or equal to 11mm, b is more than or equal to 2mm and less than or equal to 10mm, b is more than or equal to 2mm and less than or equal to 9mm, b is more than or equal to 2mm and less than or equal to 8mm, b is more than or equal to 2mm and less than or equal to 7mm, b is more than or equal to 2mm and less than or equal to 6mm, b is more than or equal to 2mm and less than or equal to 5mm, b is more than or equal to 2mm, b is less than or equal to 4mm and b is less than or equal to 2mm and less than or equal to 3mm.
In some embodiments, the width a of a groove located in a partial region of the edge of the electrochromic film 10 and the pitch b between adjacent grooves located in a partial region of the edge of the electrochromic film 10 are respectively in the following ranges: a is more than or equal to 15mm and less than or equal to 40mm; b is more than or equal to 5mm and less than or equal to 30mm. In general, the width a of the groove is a cut area of the electrochromic film, when the width a is too small, the effect of relieving wrinkles on the electrochromic edge is poor, and when the width a is too large, the number of the grooves on the edge of the electrochromic film is reduced in the same unit length, and the edge wrinkles are not relieved; the interval b between adjacent grooves is an uncut area of the electrochromic film, when the interval b is too large, the width of the uncut area is too large, in the same unit length, the width a of the grooves of the cut area is too small, and the edge wrinkles of the electrochromic film are not easy to release, when the interval b is too small, the width of the uncut area is too small, the first conductive layer and the second conductive layer are easy to conduct through extrusion between the adjacent grooves, short circuit and the like are easy to occur, and therefore the control of the electrochromic film color changing process is not facilitated. Therefore, the width a of the grooves and the interval b between the adjacent grooves are limited in a certain range, so that the grooves can be ensured to be enough in width and the quantity of the grooves can meet certain requirements, thereby being more beneficial to relieving the wrinkles at the edges of the electrochromic film, avoiding the occurrence of short circuits caused by conducting electric connection between the adjacent grooves, improving the aesthetic degree of the electrochromic film and improving the use stability and reliability of the electrochromic film.
In other embodiments, the range of the width a of the groove in the partial region of the edge of the electrochromic film 10 may be: 16mm < a.ltoreq.40 m, 17mm < a.ltoreq.40 mm, 18mm < a.ltoreq.40 mm, 19mm < a.ltoreq.40 mm, 20mm < a.ltoreq.40 mm, 21mm < a.ltoreq.40 mm, 22mm < a.ltoreq.40 mm, 23mm < a.ltoreq.40 mm, 24mm < a.ltoreq.40 mm, 25mm < a.ltoreq.40 mm, 26mm < a.ltoreq.40 mm, 27mm < a.ltoreq.40 mm, 28mm < a.ltoreq.40 mm, 29mm < a.ltoreq.40 mm, 30mm < a.ltoreq.40 mm, 31mm < a.ltoreq.40 mm, 32mm < a.ltoreq.40 mm, 33mm < a.ltoreq.40 mm, 34mm < a.ltoreq.40 mm, 35mm < a.ltoreq.40 mm, 36mm < a.ltoreq.40 mm, 38mm < a.ltoreq.40 mm and 39mm < a.ltoreq.40 mm. The range of values of the spacing b between adjacent grooves located in a localized area of the edge of the electrochromic film 10 may also be: b is more than or equal to 5mm and less than or equal to 29mm, b is more than or equal to 5mm and less than or equal to 28mm, b is more than or equal to 5mm and less than or equal to 27mm, b is more than or equal to 5mm and less than or equal to 26mm, b is more than or equal to 5mm and less than or equal to 25mm, b is more than or equal to 5mm and less than or equal to 24mm, b is more than or equal to 23mm, b is more than or equal to 5mm and less than or equal to 22mm, b is more than or equal to 5mm and less than or equal to 21mm, b is more than or equal to 5mm and less than or equal to 20mm, b is more than or equal to 5mm and less than or equal to 19mm, b is more than or equal to 5mm and less than or equal to 18mm, b is more than or equal to 5mm and less than or equal to 26mm, b is less than or equal to 5mm and b is less than or equal to 25mm, b is less than or equal to 5mm, b is less than or equal to 2mm, b is less than or equal to 5mm, b is less than or less b is more than or equal to 5mm and less than or equal to 16mm, b is more than or equal to 5mm and less than or equal to 15mm, b is more than or equal to 5mm and less than or equal to 14mm, b is more than or equal to 5mm and less than or equal to 13mm, b is more than or equal to 5mm and less than or equal to 12mm, b is more than or equal to 5mm and less than or equal to 11mm, b is more than or equal to 5mm and less than or equal to 10mm, b is more than or equal to 5mm and less than or equal to 9mm, b is more than or equal to 5mm and less than or equal to 8mm, b is more than or equal to 5mm and less than or equal to 7mm and b is more than or equal to 5mm and less than or equal to 6 mm.
In some embodiments, the sum of the width a of a groove located in a localized area of the edge of electrochromic film 10 and the spacing b between adjacent grooves located in a localized area of the edge of electrochromic film 10 satisfies the following relationship: a+b is more than or equal to 20mm and less than or equal to 40mm. In general, the purpose of providing grooves at the edge of the electrochromic film is to introduce external current or voltage to the first conductive substrate and the second conductive substrate to form an electric field at two sides of the electrochromic stacked layer, so as to drive ions or electrons in the electrochromic stacked layer to move, thereby realizing the adjustment of the color or the light transmittance of the electrochromic film, and the more the grooves are, the more uniform the distribution of the grooves is, especially the more uniform the distribution of the first grooves and the second grooves is, the more uniform the color change rate or the light transmittance change rate of the electrochromic film is; the length of the edge of the electrochromic film is limited, when the width of a single groove is too large, the formation of a plurality of grooves on the edge of the electrochromic film is not facilitated, and particularly, the formation of a plurality of uniformly distributed first grooves and second grooves is not facilitated, so that the effect of relieving or eliminating wrinkles of a local area can be achieved by limiting the value of the sum of a and b of the local area to be 20mm less than or equal to a+b less than or equal to 40mm, the uniform arrangement of the grooves can be facilitated, the color changing uniformity and the like of the electrochromic film can be ensured while the attractiveness of the electrochromic film is improved, and the use experience of a user is further improved.
In other embodiments, the sum of the width a of the groove located in the partial region of the edge of the electrochromic film 10 and the interval b between the adjacent grooves located in the partial region of the edge of the electrochromic film 10 may also be any one of the intervals 20 mm. Ltoreq.a+b. Ltoreq.40 mm, 25 mm. Ltoreq.a+b. Ltoreq.35 mm, 25 mm. Ltoreq.a+b. Ltoreq.30 mm, 30 mm. Ltoreq.a+b. Ltoreq.40 mm, 30 mm. Ltoreq.a+b. Ltoreq.35 mm, and 35 mm. Ltoreq.a+b. Ltoreq.40 mm.
It will be appreciated that the above relationships describing a and b, and the ranges of values for a and b, are defined as: a is the width of the groove located in the localized area of the edge of electrochromic film 10 and b is the spacing between adjacent grooves located in the localized area of the edge of electrochromic film 10. However, according to the actual requirements, the width a of the groove outside the local area of the edge of the electrochromic film 10 and the interval b between the adjacent grooves outside the local area of the edge of the electrochromic film 10 may also satisfy the above relation of a and b and the value ranges of a and b.
Table 1: and the values of the width of the first groove 110 and the width a of the second groove 130 and the distance b between the first groove 110 and the second groove 130 are compared with the change table of the fold depth of the electrochromic film 10.
In table 1, the thickness of the first conductive substrate 11 and the thickness of the second conductive substrate 13 were 188 μm.
As can be seen from Table 1, where a+b > 100mm and b > 30mm, in comparative examples 1 to 3, the interval b between the first groove 110 and the second groove 130 was 40mm, and the widths a of the first groove 110 and the second groove 130 were sequentially reduced from 95mm to 85mm and then to 75mm, and the pleat depths were also reduced from 54mm to 53mm and then to 50mm. Although the fold depth can be reduced to some extent by reducing b in the case where a=50mm is unchanged, the amplitude is not large, and the effect of improving the fold depth is not obvious, and the beauty and visual experience are affected. Examples 1 to 11 show that when 0mm < a+b.ltoreq.100 mm and 0mm < b.ltoreq.30 mm, the wrinkle depths are smaller than those in comparative examples 1 to 3.
From the analysis of table 1, in examples 1 and 2, the width a of the first groove 110 and the second groove 130 was 50mm, the pitch b was 50mm and 40mm, respectively, and the pleat depth was also reduced from 43mm in example 1 to 39mm in example 2.
Analytical examples 2 and 3, where the spacing b was 40mm, the width a of the first and second grooves 110 and 130 was reduced from 50mm to 40mm, and the pleat depth was unchanged. Examples 1 to 7 show that the smaller the value of a+b, the smaller the wrinkle depth, and the better the improvement effect. When a+b is more than 0 and less than or equal to 40mm, the improvement on the wrinkle depth of the electrochromic film 10 is optimal.
While comparative examples 7 to 11 revealed that when a+b < 40mm, the wrinkle improvement effect was poor, and the depth was reduced from 18mm to 17mm only. Therefore, it can be obtained that when a=b=20mm, a better effect of relieving or eliminating wrinkles in a local area of the edge of the electrochromic film 10 can be achieved, and even arrangement of a plurality of grooves on the edge of the electrochromic film 10 is facilitated, so that the color change uniformity of the electrochromic film 10 is improved, and the use experience of a user is fully improved.
Table 2: the thickness of the first conductive substrate 11 and the second conductive substrate 13 and the depth of wrinkles of the electrochromic film 10 are plotted.
In table 2, the width of the first groove 110 and the width of the second groove 130 are 20mm, a=20 mm, and the pitch between the adjacent first groove 110 and second groove 130 is 20mm, that is, b=20 mm.
As can be seen from table 2, comparative examples 1 to 3 are to improve the wrinkle depth by increasing the thickness under the condition that the thickness of the first conductive substrate 11 or the second conductive substrate 13 is < 120 μm, and as a result, increasing the thickness of the first conductive substrate 11 or the second conductive substrate 13 can reduce the wrinkle depth. However, the degree of alleviation was very weak, specifically by numerical analysis, and was only reduced from 130mm to 120mm, with the pleat depth still being large. While examples 1 to 5 were each smaller in the depth of wrinkles than any of comparative examples 1 to 3 by increasing the thickness of the first conductive substrate 11 or the second conductive substrate 13 at a thickness of ∈120 μm or more.
In examples 1 to 5, the thickness of the first conductive substrate 11 in example 1 was 125 μm, the corresponding wrinkle depth was 110mm, the thickness of the first conductive substrate 11 in example 2 was 155 μm, the corresponding wrinkle depth was 60mm, and the thickness of the first conductive substrate 11 in example 3 was 188 μm, and the corresponding wrinkle depth was 19mm, whereby it was obtained that the wrinkle improvement effect was remarkable by increasing the thickness of the first conductive substrate 11 or the second conductive substrate 13 under the condition that the thickness of the first conductive substrate 11 or the second conductive substrate 13 was ∈ 120 μm.
In comparative analysis examples 3 to 5, the thickness was increased from 188 μm to 250 μm, the pleat depth was reduced by only 4mm, and the pleat depth was not greatly reduced when the thickness was increased to 400 μm. It can be derived that the effect of improving the wrinkles is better when the width of the first groove 110 and the width of the second groove 130 are 20mm, a=20 mm, and the thickness of the first conductive substrate 11 or the second conductive substrate 13 is 188 μm.
In some embodiments, as shown in fig. 4, the depth of the groove is h, where the range of values of h is: h is more than 0 and less than or equal to 100mm. In other embodiments, the depth of the first recess 110 and the depth of the second recess 130 are each h, where 0mm < h.ltoreq.100 mm. In this way, in the direction that the groove extends from the edge of the electrochromic film 10 to the center of the electrochromic film 10, the length of the groove is the depth of the groove, and the greater the depth of the groove, the greater the width of the electrochromic stack layer 12 from which the edge is cut off, the smaller the area of the electrochromic stack layer 12 will be, so that the color change area of the electrochromic film 10 will be reduced; therefore, by limiting the depth of the groove to the above-described interval range, it is possible to ensure that the color change area of the electrochromic film 10 is sufficiently large.
The depth h of the first groove 110 is shown in fig. 4, that is, the distance that the first groove 110 extends from the edge of the electrochromic film 10 toward the center of the electrochromic film 10. Similarly, the depth h of the second groove 130 is a distance that the second groove 130 extends from the edge of the electrochromic film 10 toward the center of the electrochromic film 10.
In application, the value of h is in a range, that is, in the same embodiment, the depths of the first groove 110 and the second groove 130 may be the same or different, so long as the values are 0 < h.ltoreq.100 mm.
In other embodiments, the range of values of h may also be: 10mm < h.ltoreq.100 mm, 20mm < h.ltoreq.100 mm, 30mm < h.ltoreq.100 mm, 40mm < h.ltoreq.100 mm, 50mm < h.ltoreq.100 mm, 60mm < h.ltoreq.100 mm, 70mm < h.ltoreq.100 mm, 80mm < h.ltoreq.100 mm, 90mm < h.ltoreq.100 mm, 0 < h.ltoreq.90 mm, 10mm < h.ltoreq.90 mm, 20mm < h.ltoreq.90 mm, 30mm < h.ltoreq.90 mm the h is more than 40mm and less than or equal to 90mm, the h is more than 50mm and less than or equal to 90mm, the h is more than 60mm and less than or equal to 90mm, the h is more than 70mm and less than or equal to 90mm, the h is more than 80mm and more than 80mm, the h is more than 0 and less than or equal to 80mm, the h is more than 10mm and less than or equal to 80mm, the h is more than 20mm and less than or equal to 80mm, the h is more than 30mm and less than or equal to 80mm, the h is more than 40mm and less than or equal to 80mm, the h is more than 50mm and less than or equal to 80mm, the h is more than 60mm and less than or equal to 80mm, the h is more than 70mm and less than or equal to 80mm, the h is more than or equal to 0 and less than or equal to 70mm 10mm < h < 70mm, 20mm < h < 70mm, 30mm < h < 70mm, 40mm < h < 70mm, 50mm < h < 70mm, 60mm < h < 70mm, 0 < h < 60mm, 10mm < h < 60mm, 20mm < h < 60mm, 30mm < h < 60mm, 40mm < h < 60mm, 50mm < h < 60mm, 0 < h < 50mm, 10mm < h < 50mm, 20mm < h < 50mm, 30mm < h < 50mm, 40mm < h < 50mm, 0 < h < 40mm, 10mm < h < 40mm, 20mm < h < 40mm, 30mm < h < 40mm, 0 < h < 30mm, 10mm < h < 30mm, 20mm < h < 30mm, 0 < h < 20mm, 10mm < 20mm and 0 < h < 10mm, can be specifically defined according to practical situations.
In some embodiments, as shown in fig. 5 and 6, the first groove 110 may form two opposite first sidewalls 1101, and a third sidewall 1103, and a first groove wall 1102 on the first conductive substrate 11, wherein the first groove wall 1102 exposes a partial region of the second conductive substrate 13 near one side of the electrochromic stack layer 12. Similarly, the second groove 130 may form two opposite second sidewalls 1301, and fourth sidewalls 1303, and second groove walls 1302 on the second conductive substrate 13, wherein the second groove walls 1302 expose a partial region of the first conductive substrate 11 near one side of the electrochromic stack layer 12.
In some embodiments, as shown in fig. 7 (a) and 7 (b), an edge of a side of the first conductive substrate 11 remote from the electrochromic stack layer 12 is provided with a first bus bar 14, and a partial region of the first bus bar 14 is disposed along a first groove wall 1102 of the first groove 110 and is attached to a side of the second conductive substrate 13 near the electrochromic stack layer 12 so as to be electrically connected with the second conductive substrate 13; the edge of the side of the second conductive substrate 13 remote from the electrochromic stack layer 12 is provided with a second bus bar 15, and a partial region of the second bus bar 15 is disposed along a second groove wall 1302 of the second groove 130 and is attached to the side of the first conductive substrate 11 near the electrochromic stack layer 12 so as to be electrically connected with the first conductive substrate 11. Therefore, through the electrical connection between the first bus bar 14 and the second conductive substrate 13, external current or voltage can be quickly introduced to the second conductive substrate 13 through the first bus bar 14, and through the electrical connection between the second bus bar 15 and the first conductive substrate 11, external current or voltage can be quickly introduced to the first conductive substrate 11 through the second bus bar 15, so that the speed of the external current or voltage conducted to the first conductive substrate 11 and the second conductive substrate 13 is increased, and the color changing speed or the light transmittance changing speed of the electrochromic film 10 is increased.
In some embodiments, as shown in fig. 7 (a), a partial region of the first bus bar 14 adjacent to the first sidewall 1101 of the first recess 110 is disposed obliquely to avoid the first bus bar 14 from making an electrical connection with the first conductive layer 112. In other embodiments, a portion of the second bus bar 15 adjacent to the second sidewall 1301 of the second recess 130 is disposed obliquely to avoid the second bus bar 15 from making electrical connection with the second conductive layer 132. Therefore, through the inclined arrangement of the first bus bar, the distance between the first bus bar and the first conductive layer can be increased, and the possibility of electric connection between the first bus bar and the first conductive layer is reduced or prevented, so that the first conductive layer and the second conductive layer are prevented from forming short-circuit electric connection through the first bus bar; similarly, by the inclined arrangement of the second bus bar, the distance between the second bus bar and the second conductive layer can be increased, and the possibility of electric connection between the second bus bar and the second conductive layer is reduced or prevented, so that the first conductive layer and the second conductive layer are prevented from forming short-circuit electric connection through the second bus bar, and the use safety and reliability of the electrochromic film are improved.
In some embodiments, as shown in fig. 7 (a), an insulating paste 16 is provided between the first bus bar 14 and the first sidewall 1101 of the first recess 110. In other embodiments, an insulating paste 16 is disposed between the second bus bar 15 and the second sidewall 1301 of the second groove 130. At this time, the insulating paste 16 may be entirely filled in the gap between the first bus bar 14 and the first side wall 1101 and/or the gap between the second bus bar 15 and the second side wall 1301 as shown in fig. 7 (a), or may be partially filled, and the bus bars may be provided with partial regions inclined as shown in fig. 7 (a) or may be provided along the edges of the insulating paste 16.
In some embodiments, as shown in fig. 7 (b), the outside of the first sidewall 1101 of the first groove 110 is provided with a blocking portion 17. In other embodiments, the outside of the second sidewall 1301 of the second groove 130 is provided with a barrier 17. Wherein the blocking portion 17 may be, for example, disposed along an outer side of the first sidewall 1101 of the first groove 110 and/or along an outer side of the second sidewall 1301 of the second groove 130.
In some embodiments, the barrier 17 may also be disposed along the outside of the first and third sidewalls 1101, 1103 of the first groove 110 at the same time, and/or along the outside of the second and fourth sidewalls 1301, 1303 of the second groove 130 at the same time.
In some embodiments, as shown in fig. 7 (b), the barrier 17 adjacent to the first groove 110 may be a barrier rib formed after the first conductive substrate 11 is partially cut (the barrier rib includes a portion of the first conductive substrate 11, and is filled between the first groove 110 and a slit formed by partially cutting the first conductive substrate 11); alternatively, the barrier 17 adjacent to the first recess 110 may be a wider gap formed by etching away a portion of the first conductive substrate 11.
Similarly, the barrier portion 17 adjacent to the second groove 130 may be a barrier rib formed after the second conductive substrate 13 is partially cut (the barrier rib includes a portion of the second conductive substrate 13, and is filled between the second groove 130 and a slit formed by partially cutting the second conductive substrate 13); alternatively, the barrier 17 adjacent to the second recess 130 may be a wider gap formed by etching away a portion of the second conductive substrate 13.
In other embodiments, the barrier 17 adjacent to the first recess 110 may be a barrier rib formed after partially cutting the first conductive substrate 11 and the electrochromic stack layer 12 (the barrier rib includes a portion of the first conductive substrate 11 and the electrochromic stack layer 12, and is filled between the first recess 110 and a slit formed by partially cutting the first conductive substrate 11 and the electrochromic stack layer 12); alternatively, the barrier 17 adjacent to the first recess 110 may also be a wider gap formed after etching away the partial first conductive substrate 11 and the electrochromic stack layer 12.
Similarly, the barrier 17 adjacent to the second recess 130 may be a barrier rib formed by partially cutting the second conductive substrate 13 and the electrochromic stack layer 12 (the barrier rib includes a portion of the second conductive substrate 13 and the electrochromic stack layer 12, and is filled between the second recess 130 and a slit formed by partially cutting the second conductive substrate 13 and the electrochromic stack layer 12); alternatively, the barrier 17 adjacent to the second recess 130 may also be a wider gap formed after etching away the partial second conductive substrate 13 and the electrochromic stack layer 12.
In this case, by the provision of the blocking portion 17, it is possible to more effectively prevent the electrical connection between the first bus bar and the first conductive layer and/or to more effectively prevent the electrical connection between the second bus bar and the second conductive layer, so as to avoid the occurrence of a short circuit or the like of the electrochromic film, further improving the use safety and reliability thereof.
In some embodiments, the insulating glue 16 and/or the barrier 17 may also be disposed outside the third sidewall 1103 of the first groove 110; and/or, the insulating paste 16 and/or the blocking portion 17 may be further disposed outside the fourth sidewall 1303 of the second groove 130. Therefore, the electric connection between the first bus bar and the first conductive layer can be prevented more comprehensively and effectively, and/or the electric connection between the second bus bar and the second conductive layer can be prevented, and the use safety and reliability of the electrochromic film are further improved.
In application, the structure of one edge of the electrochromic film 10 is shown in fig. 7, and in practice, in order to increase the conduction speed, four edges of the electrochromic film 10 are provided with first bus bars 14 and second bus bars 15 in the same form; in special cases, the first bus bar 14 and/or the second bus bar 15 may not be arranged when some edges are relatively narrow and difficult to arrange or other factors are considered.
It should be noted that, by providing the plurality of first grooves 110 and the plurality of second grooves 130 on the edge of the electrochromic film 10, the electrical connection points of the electrochromic film 10 can be more uniformly distributed, so that the uniformity of electrical conduction to the first conductive substrate 11 and the second conductive substrate 13 is improved. By connecting the first bus bar 14 and the second bus bar 15 to an external power source, respectively, an external electric field is formed between the first conductive layer 112 and the second conductive layer 132 to improve the color changing efficiency and stability of the electrochromic film 10.
In some embodiments, as shown in fig. 8-10, electrochromic film 10 has a camber H in the first direction 1 The electrochromic film 10 has a camber H in the second direction 2 Wherein the first direction and the second direction are perpendicular to each other, and H 1 With said H 2 The product satisfies the following relationship: h 1 ×H 2 ≤2500mm 2 /m 4 . Camber H of electrochromic film 10 1 And H 2 Certain restrictions are made to make the effect of wrinkle alleviation more obvious. The greater the camber of the electrochromic film 10, the greater the likelihood that the edges thereof will buckle, or the more severe the buckling (deeper or more buckling, etc.) the edges thereof will form, and therefore, by limiting the camber of the electrochromic film 10 within a certain range, the effect of relieving the buckling of the edges of the electrochromic film 10 can be further achieved, thereby further improving the aesthetic appearance of the electrochromic film 10.
The first direction is the X direction in fig. 8, and the second direction is the Y direction in fig. 8. The results of the experimental data listed in the above table can satisfy H with the average camber relationship of the electrochromic film 10 for different areas of the electrochromic film 10 having different depths of edge wrinkles 1 ×H 2 ≤2500mm 2 /m 4 The conditions are preconditions.
The embodiment of the application also provides an electrochromic device, which comprises a substrate layer and the electrochromic membrane 10, wherein the substrate layer and the electrochromic membrane 10 are laminated, and the substrate layer can be one layer or more than two layers.
In some embodiments, the electrochromic device may be specifically a color-changing glass. The substrate layer comprises at least two layers, and the electrochromic film 10 is disposed between the at least two substrate layers. In some embodiments, the substrate layer is a glass layer 20. Thus, by providing at least two substrate layers, the electrochromic film 10 can be placed between the substrate layers, thereby forming a more comprehensive and effective load bearing or protective effect on the electrochromic film 10; also, by providing the substrate layer as the glass layer 20, it is possible to better protect or carry the electrochromic film 10 while ensuring that the electrochromic device has sufficient rigidity, preventing deformation, etc.
Specifically, fig. 11 is a schematic view of electrochromic film 10 applied to a flat glass; but also to curved glass.
Embodiments of the present application also provide an end product comprising an electrochromic film 10 or electrochromic device as described above, wherein the end product comprises any one of a rear view mirror, a curtain wall, an automotive sunroof, an automotive side window, an automotive windshield, a housing for an electronic product, eyeglasses, a vehicle, and a display panel. Because the end product includes the electrochromic film 10 described above, wrinkles of the end product can be effectively relieved or eliminated to enhance the aesthetic appearance of the end product, thereby improving the visual experience of the user, etc.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (14)

1. An electrochromic film is characterized by comprising a first conductive substrate, an electrochromic stack layer and a second conductive substrate which are sequentially stacked;
at least two grooves are formed in the edge of the electrochromic film, the width of each groove is a, the distance between every two adjacent grooves is b, and the width a of each groove located in a local area of the edge of the electrochromic film and the distance b between every two adjacent grooves located in a local area of the edge of the electrochromic film meet the following relation:
A+b is more than 0mm and less than or equal to 100mm; wherein,
at least one of the grooves is a first groove through the first conductive substrate and the electrochromic stack layer, and at least one of the grooves is a second groove through the second conductive substrate and the electrochromic stack layer; and, in addition, the processing unit,
a localized area of the edge of the electrochromic film includes a mid-section portion of the edge of the electrochromic film; and/or, a concave area is formed on the edge of the electrochromic film, and a local area of the edge of the electrochromic film comprises the concave area.
2. The electrochromic film of claim 1, wherein said first grooves alternate with said second grooves at an edge of said electrochromic film.
3. Electrochromic film according to claim 1 or 2, characterized in that the width a of the groove outside the local area of the edge of the electrochromic film and the spacing b between the adjacent grooves outside the local area of the edge of the electrochromic film satisfy the following relation:
a+b＞100mm。
4. electrochromic film according to claim 1 or 2, characterized in that the distance b between the adjacent grooves in a partial area of the edge of the electrochromic film is in the range of:
0mm≤b≤30mm；
Or b is more than or equal to 2mm and less than or equal to 30mm.
5. Electrochromic film according to claim 1 or 2, characterized in that the width a of the groove in the partial region of the edge of the electrochromic film and the distance b between the adjacent grooves in the partial region of the edge of the electrochromic film are in each case in the range of:
15mm≤a≤40mm；5mm≤b≤30mm。
6. electrochromic film according to claim 1 or 2, characterized in that the sum of the width a of the grooves located in the partial region of the edge of the electrochromic film and the spacing b between the adjacent grooves located in the partial region of the edge of the electrochromic film satisfies the following relation:
20mm≤a+b≤40mm。
7. electrochromic film according to claim 1 or 2, characterized in that the width a of the groove in the partial region of the edge of the electrochromic film and the distance b between the adjacent grooves in the partial region of the edge of the electrochromic film are each of the following values:
a＝20mm，b＝20mm。
8. the electrochromic diaphragm of claim 1 or 2, wherein a first bus bar is arranged at the edge of one side of the first conductive substrate away from the electrochromic stack layer, and a partial area of the first bus bar is arranged along a first groove wall of the first groove and is attached to one side of the second conductive substrate close to the electrochromic stack layer;
The edge of one side of the second conductive substrate far away from the electrochromic stack layer is provided with a second bus bar, and a partial area of the second bus bar is arranged along a second groove wall of the second groove and is attached to one side of the first conductive substrate close to the electrochromic stack layer.
9. The electrochromic film of claim 8, wherein said first recess forms two opposing first side walls on said first conductive substrate, said first bus bars being disposed obliquely adjacent to a partial region of said first side walls;
the second grooves form two opposite second side walls on the second conductive substrate, and partial areas of the second bus bars, which are close to the second side walls, are obliquely arranged.
10. The electrochromic film of claim 8, wherein said first recess forms two opposing first sidewalls on said first conductive substrate, an insulating paste is disposed between said first bus bar and said first sidewalls, and said second recess forms two opposing second sidewalls on said second conductive substrate, an insulating paste is disposed between said second bus bar and said second sidewalls;
Or,
the first groove forms two opposite first side walls on the first conductive substrate, a blocking part is arranged on the outer side of the first side walls, the second groove forms two opposite second side walls on the second conductive substrate, and a blocking part is arranged on the outer side of the second side walls.
11. The electrochromic film according to claim 1 or 2, wherein the thickness of the first conductive substrate is greater than or equal to 120 μm;
and/or, the thickness of the second conductive substrate is greater than or equal to 120 μm.
12. The electrochromic film according to claim 1 or 2, wherein the electrochromic film has a camber H in the first direction 1 The camber of the electrochromic film along the second direction is H 2 Wherein the first direction and the second direction are perpendicular to each other, and the camber H of the first direction 1 A camber H with the second direction 2 The product satisfies the following relationship:
H 1 ×H 2 ≤2500mm 2 /m 4 。
13. an electrochromic device comprising a substrate layer and an electrochromic film according to any one of claims 1 to 12, said substrate layer being laminated to said electrochromic film.
14. An end product comprising an electrochromic film according to any one of claims 1 to 12 or an electrochromic device according to claim 13, wherein the end product comprises any one of a rear view mirror, a curtain wall, a sunroof, a side window of an automobile, a windshield of an automobile, a housing of an electronic product, eyeglasses, a vehicle and a display panel.
CN202322019905.0U 2023-07-28 2023-07-28 Electrochromic film, electrochromic device and end product Active CN220438721U (en)

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Application Number Priority Date Filing Date Title
CN202322019905.0U CN220438721U (en) 2023-07-28 2023-07-28 Electrochromic film, electrochromic device and end product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322019905.0U CN220438721U (en) 2023-07-28 2023-07-28 Electrochromic film, electrochromic device and end product

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