Electrochromic device, manufacturing method thereof and electronic equipment

Abstract

The invention provides an electrochromic device, a manufacturing method thereof and electronic equipment, and the electrochromic device comprises an electrochromic functional layer and an integrated sealing structure wrapping the electrochromic functional layer; the inner side wall of each side edge of the sealing structure is provided with a plurality of supporting parts which are arranged at intervals and extend towards the electrochromic functional layer. And each supporting part is in contact with the electrochromic functional layer and the top and the bottom of the sealing structure respectively.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to an electrochromic device, its manufacturing method, and an electronic device thereof. Background Technology

[0002] Flexible electrochromic devices, with their bendability and precisely adjustable light transmittance, have broad application prospects in smart car windows, smart homes, flexible display devices, and privacy films. Their typical structure is a "sandwich" structure, with an electrochromic functional layer sandwiched between two flexible substrates.

[0003] To prevent the evaporation of internal electrolyte solvents and the intrusion of external water and oxygen, organic sealants are commonly used to seal the edges of the electrochromic functional layer. To ensure the efficiency of the redox reaction and the ion transport rate of the organic electrochromic layer, highly polar electrolyte solvents are typically used. However, these highly polar electrolyte solvents can easily penetrate into the organic sealant, causing the sealant layer to swell, crack, or even fail completely, significantly shortening the device's lifespan.

[0004] Therefore, improving the edge sealing performance of electrochromic devices has become an urgent technical problem to be solved. Summary of the Invention

[0005] This invention provides an electrochromic device, its manufacturing method, and an electronic device, which ensures the uniformity of the electrochromic layer thickness while taking into account the edge sealing performance of the electrochromic device.

[0006] In a first aspect, embodiments of the present invention provide an electrochromic device, comprising: An electrochromic functional layer and an integrated sealing structure enclosing the electrochromic functional layer; The inner sidewalls of each side of the sealing structure are provided with a plurality of spaced support portions extending toward the electrochromic functional layer; each of the support portions is in contact with the electrochromic functional layer, the top and bottom of the sealing structure, respectively.

[0007] In one possible implementation, along a first direction, the electrochromic functional layer contacts the top and the bottom respectively, and the thickness of each of the supports is equal to the thickness of the electrochromic functional layer; the first direction is the direction from the top to the bottom.

[0008] In one possible implementation, the thickness of the side decreases along a second direction; the second direction is the direction in which the electrochromic functional layer points toward the support portion.

[0009] In one possible implementation, on the same side of the sealing structure, each of the support portions is spaced apart along a third direction, and the distance between two adjacent support portions is 5mm to 10mm; the third direction is perpendicular to the first direction and the second direction, respectively.

[0010] In one possible implementation, along the second direction, the side extends for 2mm to 10mm, and the support extends for 2mm to 10mm.

[0011] In one possible implementation, the cross-sectional shape of the support portion along the plane enclosed by the third direction and the second direction is one of a rectangle, a triangle, or a semicircular arc.

[0012] In one possible implementation, the sealing structure and the support are made of the same heat-fusible flexible polymer material.

[0013] In one possible implementation, the sealing structure is integrally formed with the support portion.

[0014] Secondly, embodiments of the present invention also provide an electronic device, comprising: Electrochromic devices as described in any of the above items.

[0015] Thirdly, embodiments of the present invention also provide a method for manufacturing an electrochromic device, comprising: The first and second substrates are made of the same heat-fusible flexible polymer material; The enclosure structure is prepared using the same material as the heat-fusible flexible polymer material; the enclosure structure includes a main body arranged in a closed ring shape, and a plurality of spaced support parts arranged on the inner sidewall of the main body; the main body and the support parts are integrally formed. The enclosure structure is disposed on the surface of the first base, and the first base and the enclosure structure form an accommodating space. The electrochromic functional layer is filled into the accommodating space; wherein the thickness of each of the supporting portions is equal to the thickness of the electrochromic functional layer; The second substrate is disposed on the side of the electrochromic functional layer away from the first substrate; A hot-pressing device is used for zoned hot-pressing. The hot-pressing head of the device applies pressure to the bottom of the first substrate in contact with the main body and the top of the second substrate in contact with the main body. The clearance area of ​​the hot-pressing head is correspondingly set to each of the support parts. The hot-pressing temperature is controlled above the glass transition temperature of the heat-fusible flexible polymer material, and the main body is fused with the first and second substrates to form an integrated sealed structure. Each of the support parts is in contact with the electrochromic functional layer and the top and bottom of the sealed structure, respectively.

[0016] The beneficial effects of this invention are as follows: This invention provides an electrochromic device, its manufacturing method, and an electronic device. The electrochromic device includes an electrochromic functional layer and an integrated sealing structure that encloses the electrochromic functional layer. This sealing structure effectively seals the edges of the electrochromic functional layer. Furthermore, the inner sidewalls of each side of the sealing structure are provided with multiple spaced support portions extending towards the electrochromic functional layer. Each support portion contacts the top and bottom of both the electrochromic functional layer and the sealing structure. This multiple support portions effectively support the electrochromic functional layer, thereby ensuring the uniformity of the electrochromic layer's thickness. In this way, while maintaining the edge sealing performance of the electrochromic device, the uniformity of the electrochromic layer's thickness is also ensured. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of one of the electrochromic devices provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of another cross-sectional structure of the electrochromic device provided in an embodiment of the present invention; Figure 3 A flowchart illustrating one method of fabricating an electrochromic device according to an embodiment of the present invention; Figure 4 For preparation Figure 1 One of the process flow diagrams for the structure shown; Figure 5 This is a top view diagram of one type of enclosure structure; Explanation of reference numerals in the attached figures: 10-Electrochromic functional layer; 20-Sealing structure; 21-Side; 22-Top; 23-Bottom; 30-Support part; 100-First substrate; 200-Second substrate; 300-Enclosure structure; 301-Main body. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Furthermore, the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of the invention. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0021] In related technologies, organic sealant can be used to seal the edges of the electrochromic functional layer. However, highly polar electrolyte solvents can easily penetrate into the organic sealant, causing the sealant layer to swell, crack, or even fail completely, significantly shortening the device's lifespan.

[0022] In view of this, embodiments of the present invention provide an electrochromic device, a method for manufacturing the same, and an electronic device, which are used to ensure the uniformity of the thickness of the electrochromic layer while taking into account the edge sealing performance of the electrochromic device.

[0023] Combination Figure 1 and Figure 2 As shown, where, Figure 1 This is a schematic cross-sectional view of one of the electrochromic devices provided in an embodiment of the present invention. Figure 2 This is a schematic cross-sectional view of another electrochromic device provided in an embodiment of the present invention; specifically, the electrochromic device includes: Electrochromic functional layer 10 and an integrated sealing structure 20 enclosing the electrochromic functional layer 10; The inner wall of each side 21 of the sealing structure 20 is provided with a plurality of spaced support portions 30 extending toward the electrochromic functional layer 10; each support portion 30 is in contact with the electrochromic functional layer 10, the top 22 and the bottom 23 of the sealing structure 20 respectively.

[0024] In specific implementation, the electrochromic device provided in this embodiment of the invention includes an electrochromic functional layer 10 and a sealing structure 20. Exemplarily, the electrochromic functional layer 10 includes a first electrode layer and a second electrode layer disposed opposite to each other, and an electrochromic layer located between the first electrode layer and the second electrode layer. Exemplarily, the total thickness of the electrochromic functional layer 10 ranges from 50 μm to 300 μm. Exemplarily, the first electrode layer and the second electrode layer can be made of transparent conductive materials, such as indium oxide, indium tin oxide (ITO), tin oxide, etc. Exemplarily, the electrochromic layer can be prepared using an organic color-changing material and a strongly polar solvent. Exemplarily, the organic color-changing material can be a pure black flexible electrochromic material; the solvent can be dimethyl sulfoxide (DMS), dimethylformamide (DF), etc. The sealing structure 20 is an integrated structure encapsulating the electrochromic functional layer 10. Exemplarily, the material of the sealing structure 20 can be a heat-fusible flexible polymer material. For example, polyethylene terephthalate (PET), polyimide (PI), and polyethylene naphthalate (PEN) are used, and no specific method is specified here. In this way, even highly polar electrolyte solvents can effectively prevent penetration into the sealing structure 20, ensuring the edge sealing performance of the electrochromic device.

[0025] Furthermore, the inner wall of each side 21 of the sealing structure 20 is provided with a plurality of spaced support portions 30 extending toward the electrochromic functional layer 10; each support portion 30 contacts the electrochromic functional layer 10 and the top 22 and bottom 23 of the sealing structure 20, respectively. For example, the plurality of support portions 30 can be two, or two or more, without limitation. In this way, the electrochromic functional layer 10 is effectively supported by the plurality of support portions 30, thereby ensuring the uniformity of the thickness of the electrochromic layer. Thus, while taking into account the edge sealing performance of the electrochromic device, the uniformity of the thickness of the electrochromic layer is guaranteed.

[0026] It should be noted that, in this embodiment of the invention, the support portion 30 and the sealing structure 20 can be made of the same heat-fusible flexible polymer material, and the support portion 30 and the sealing structure 20 are an integrated structure. In this way, while ensuring the support performance of the multiple support portions 30 for the electrochromic functional layer 10, the penetration of the related solvents of the electrochromic layer into the support portion 30 is avoided, thereby improving the performance of the electrochromic device.

[0027] In this embodiment of the invention, along a first direction, the electrochromic functional layer 10 contacts the top 22 and the bottom 23 respectively, and the thickness of each of the support portions 30 is equal to the thickness of the electrochromic functional layer 10; the first direction is the direction from the top 22 to the bottom 23.

[0028] Still combined Figure 1 In the exemplary embodiment shown, the electrochromic functional layer 10 contacts the top 22 and the bottom 23 along a first direction; and the thickness of each support portion 30 is equal to the thickness of the electrochromic functional layer 10. The first direction is the direction from the top 22 to the bottom 23, as shown... Figure 1 In the diagram, the direction indicated by arrow X is the direction corresponding to the first direction; d1 represents the thickness of the support portion 30, and d2 represents the thickness of the electrochromic functional layer 10, which satisfy the relationship: d1=d2. For example, the thickness of the electrochromic functional layer 10 along the first direction ranges from 50μm to 300μm. Of course, the specific thickness of the electrochromic functional layer 10 along the first direction can be set according to actual application needs, and is not limited here. It should be noted that "equal" here can be approximately equal or nearly equal, and is not limited here. In this way, the support performance of each support portion 30 on the electrochromic functional layer 10 is guaranteed, ensuring the uniformity of the electrochromic layer thickness, thereby guaranteeing the optical performance and response speed of the electrochromic device and improving its performance.

[0029] In this embodiment of the invention, the thickness of the side 21 decreases along a second direction; the second direction is the direction in which the electrochromic functional layer 10 points to the support portion 30.

[0030] Still combined Figure 1 In the exemplary embodiment shown, the thickness of the side 21 of the sealing structure 20 decreases along the second direction. The second direction is the direction in which the electrochromic functional layer 10 points towards the support portion 30, such as... Figure 1 The direction indicated by the middle arrow Y is the second direction. Correspondingly, the thickness of the regions in the sealing structure 20 corresponding to each support portion 30 is uniform along the second direction, and this thickness is greater than or equal to the thickness of the side edge 21 of the sealing structure 20. For example... Figure 1In this diagram, D1 represents the thickness of the side 21 of the sealing structure 20, and D2 represents the thickness of the area in the sealing structure 20 corresponding to each support part 30. The two satisfy the relationship: D1≤D2. In this way, while taking into account the edge sealing performance of the sealing structure 20, the support performance of each support part 30 is guaranteed, thus ensuring the thickness uniformity of the electrochromic functional layer 10.

[0031] In this embodiment of the invention, on the same side 21 of the sealing structure 20, each of the support portions 30 is arranged at intervals along a third direction, and the distance between two adjacent support portions 30 is 5mm to 10mm; the third direction is perpendicular to the first direction and the second direction respectively.

[0032] Still combined Figure 2 In the exemplary embodiment shown, on the same side 21 of the sealing structure 20, each support portion 30 is spaced apart along a third direction. This third direction is perpendicular to both the first and second directions. Figure 2 In the diagram, arrow Z indicates the third direction, and h represents the distance between two adjacent support parts 30. Correspondingly, Figure 2 The structure shown can be a schematic cross-sectional view of the electrochromic device along a plane parallel to the third and second directions. In specific implementations, the spacing between two adjacent support portions 30 is 5mm to 10mm. For example, the spacing between two adjacent support portions 30 is 5mm. This ensures the distribution density of the multiple support portions 30, guaranteeing the uniform thickness of the electrochromic functional layer 10. It should be noted that on the same side 21 of the sealing structure 20, the multiple support portions 30 can be uniformly distributed or non-uniformly distributed, which is not limited here.

[0033] In this embodiment of the invention, along the second direction, the extension length of the side 21 is 2mm to 10mm, and the extension length of the support portion 30 is 2mm to 10mm.

[0034] Still combined Figure 2 In the exemplary embodiment shown, the extension length of the side edge 21 along the second direction is 2mm to 10mm, and the extension length of the support portion 30 is 2mm to 10mm. In this way, while ensuring the supporting performance of each support portion 30, the sealing performance of the side edge 21 is also guaranteed. Figure 2 As shown, w1 represents the extension length of the side edge 21 along the second direction, and w2 represents the extension length of the support portion 30 along the second direction. In specific implementations, w1 can be less than w2, w1 can be greater than w2, or w1 can be equal to w2; no limitation is made here.

[0035] In this embodiment of the invention, the cross-sectional shape of the support portion 30 along the plane enclosed by the third direction and the second direction is one of a rectangle, a triangle, or a semicircular arc.

[0036] Still combined Figure 2 In the exemplary embodiment shown, the cross-sectional shape of the support portion 30 along the plane parallel to the third and second directions is rectangular, and correspondingly, the support portion 30 has a sawtooth structure relative to the side 21. Alternatively, the cross-sectional shape of the support portion 30 along the plane parallel to the third and second directions can be triangular. Alternatively, the cross-sectional shape of the support portion 30 along the plane parallel to the third and second directions can be a semi-circular arc. Of course, the specific shape of the support portion 30 can be set according to actual application needs, which will not be detailed here.

[0037] In this embodiment of the invention, the sealing structure 20 and the support portion 30 are made of the same heat-fusible flexible polymer material.

[0038] In practice, the support portion 30 and the sealing structure 20 can be made of the same heat-fusible flexible polymer material. This avoids the penetration of solvents from the electrochromic layer into the sealing structure 20 and the support portion 30, improving the performance of the electrochromic device. Furthermore, the structure made from the heat-fusible flexible polymer material has a lower manufacturing cost compared to organic sealing adhesives.

[0039] In this embodiment of the invention, the sealing structure 20 and the support portion 30 are integrally formed. This improves the manufacturing efficiency of the electrochromic device.

[0040] It should be noted that, in addition to the film structure mentioned above, the electrochromic device provided in the embodiments of the present invention can also be configured with other film structures according to actual application needs. The specific configuration can be implemented with reference to relevant technologies, which will not be described in detail here.

[0041] Based on the same inventive concept, embodiments of the present invention also provide an electronic device, which includes: Electrochromic devices as described in any of the above items.

[0042] Since the principle by which this electronic device solves the problem is similar to that of the aforementioned electrochromic device, the implementation of this electronic device can be referred to the implementation of the aforementioned electrochromic device, and the repeated parts will not be repeated.

[0043] In specific implementation, the electronic device provided in the embodiments of the present invention can be any product or component with display function, such as a smart home device, smart car window, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc. Other essential components of this electronic device are understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting the present invention.

[0044] Based on the same inventive concept, such as Figure 3 As shown in the figure, this embodiment of the invention also provides a method for manufacturing an electrochromic device, the method comprising: S101: The first and second substrates are made of the same heat-fusible flexible polymer material; S102: The enclosure structure is prepared using the same material as the heat-melt flexible polymer material; the enclosure structure includes a main body arranged in a closed ring shape, and a plurality of spaced support parts arranged on the inner sidewall of the main body; the main body and the support parts are integrally formed. S103: The enclosure structure is disposed on the surface of the first base, and the first base and the enclosure structure form an accommodating space; S104: The electrochromic functional layer is filled into the accommodating space; wherein the thickness of each of the supporting portions is equal to the thickness of the electrochromic functional layer; S105: The second substrate is disposed on the side of the electrochromic functional layer away from the first substrate; S106: A hot-pressing device is used for partitioned hot-pressing. The hot-pressing head of the hot-pressing device applies pressure to the bottom of the first substrate in contact with the main body and the top of the second substrate in contact with the main body. The clearance area of ​​the hot-pressing head is correspondingly set to each of the support parts. The hot-pressing temperature is controlled above the glass transition temperature of the heat-fusible flexible polymer material. The main body is fused with the first substrate and the second substrate into an integrated sealed structure. Each of the support parts is in contact with the electrochromic functional layer, the top and bottom of the sealed structure, respectively.

[0045] To prepare Figure 1 Taking the structure shown as an example, combined with Figure 4 The process flow diagram shown provides a detailed explanation of the specific implementation process of steps S101 to S106.

[0046] First, a first substrate 100 and a second substrate 200 are fabricated using the same heat-fusible flexible polymer material. For example, PI (polyimide) is used to fabricate both the first substrate 100 and the second substrate 200. Then, a containment structure 300 is fabricated using a material of the same heat-fusible flexible polymer material. For example, PI is used to fabricate the containment structure 300. The containment structure 300 includes a main body 301 arranged in a closed ring shape, and a plurality of spaced-apart support parts 30 disposed on the inner sidewall of the main body 301; the main body 301 and the support parts 30 are integrally formed. For example, both the main body 301 and the support parts 30 are made of PI and are integrally formed. This ensures airtightness during heat-fusible sealing. Figure 5 The diagram shown is a top view of one type of enclosure structure 300.

[0047] Then, the enclosure structure 300 is disposed on the surface of the first substrate 100; for example, the first substrate 100 may be a lower substrate, and the enclosure structure 300 may be placed on the upper surface of the upper substrate. In this way, the first substrate 100 and the enclosure structure 300 form an accommodating space. Then, the electrochromic functional layer 10 is filled into the accommodating space. For example, the electrochromic material used to prepare the electrochromic layer 10 may be uniformly coated into the accommodating space and fill the accommodating space. Accordingly, the thickness of each support portion 30 is equal to the thickness of the electrochromic functional layer 10. It should be noted that "equal" here may mean approximately equal or nearly equal, and is not limited here.

[0048] Then, the second substrate 200 is disposed on the side of the electrochromic functional layer 10 away from the first substrate 100. For example, the second substrate 200 is an upper substrate, and can be disposed on the side of the electrochromic functional layer 10 away from the lower substrate. Then, a hot-pressing process is performed using a hot-pressing device. The hot-pressing head of the device applies pressure to the bottom 23 where the first substrate 100 contacts the main body 301, and the top 22 where the second substrate 200 contacts the main body 301. The clearance area of ​​the hot-pressing head corresponds to each support portion 30, and the hot-pressing temperature is controlled above the glass transition temperature of the heat-fusible flexible polymer material. The main body 301, the first substrate 100, and the second substrate 200 are fused together to form an integrated sealed structure 20. For example, when the heat-fusible flexible polymer material used is PET, the glass transition temperature is 120°C, the applied pressure can be 0.5 MPa to 3 MPa, and the holding time is controlled within the range of 30 seconds to 120 seconds. Of course, the glass transition temperature, applied pressure, and holding time can be set according to the specific material of the heat-fusible flexible polymer used in the actual application, which will not be detailed here.

[0049] In the specific implementation process, the main body 301 and the support 30 can be hot-pressed in sections. Specifically, the areas of each support 30 are avoided, and only the areas of the main body 301 that contact the first substrate 100 and the second substrate 200 are hot-pressed. Correspondingly, during the hot-melt process of the main body 301 with the first substrate 100 and the second substrate 200, each support 30 remains solid, providing uniform vertical support for the electroluminescent functional layer. In this way, the problem of irregular deformation of the electrochromic functional layer 10 due to insufficient support during the hot-melt process of the main body 301 with the first substrate 100 and the second substrate 200 is avoided. Moreover, each support 30 contacts the top 22 and bottom 23 of the electrochromic functional layer 10 and the sealing structure 20, respectively; correspondingly, the thickness of each support 30 is equal to the thickness of the electrochromic functional layer 10. Then, it is naturally cooled to room temperature to complete the encapsulation. Then, relevant performance tests are performed, such as sealing tests and electrochromic performance tests. In this way, the supporting performance of each support part 30 is guaranteed during the hot pressing process, thereby ensuring the thickness uniformity of the electrochromic functional layer 10. At the same time, the main body 301 can be fused with the first substrate 100 and the second substrate 200 into an integrated sealing structure 20. Compared with the bonding and sealing of organic sealant in conventional technology, it is cheaper and has a better sealing effect. Moreover, the entire manufacturing process does not require glue application, curing and other processes, thus simplifying the manufacturing process.

[0050] It should be noted that, in order to ensure the sealing performance of the sealing structure 20 at the edge of the electrochromic device, the hot-pressing temperature and hot-pressing pressure, which tend to increase, can be sequentially applied to the same side 21 of the enclosure structure 300 (i.e., the same side 21 of the main body 301) along the second direction (i.e., the direction in which the electrochromic functional layer 10 points towards the support 30). Accordingly, the thermal fusion between the portion of the main body 301 closer to the edge and the first substrate 100 and the second substrate 200 is more complete; as a result, the thickness of the same side 21 of the formed sealing structure 20 tends to decrease along the second direction.

[0051] This invention provides an electrochromic device, its manufacturing method, and an electronic device. The electrochromic device includes an electrochromic functional layer 10 and an integrated sealing structure 20 that surrounds the electrochromic functional layer 10. This sealing structure 20 effectively seals the edges of the electrochromic functional layer 10. Furthermore, multiple spaced support portions 30 extending towards the electrochromic functional layer 10 are provided on the inner sidewalls of each side 21 of the sealing structure 20. Each support portion 30 contacts the top 22 and bottom 23 of the electrochromic functional layer 10 and the sealing structure 20, respectively. This effectively supports the electrochromic functional layer 10 through the multiple support portions 30, thereby ensuring the uniformity of the electrochromic layer's thickness. In this way, while ensuring the edge sealing performance of the electrochromic device, the uniformity of the electrochromic layer's thickness is also guaranteed.

[0052] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0053] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An electrochromic device, characterized in that, include: An electrochromic functional layer and an integrated sealing structure enclosing the electrochromic functional layer; The inner sidewalls of each side of the sealing structure are provided with a plurality of spaced support portions extending toward the electrochromic functional layer; each of the support portions is in contact with the electrochromic functional layer, the top and bottom of the sealing structure, respectively.

2. The electrochromic device as described in claim 1, characterized in that, Along the first direction, the electrochromic functional layer is in contact with the top and the bottom respectively, and the thickness of each of the supporting portions is equal to the thickness of the electrochromic functional layer; the first direction is the direction from the top to the bottom.

3. The electrochromic device as described in claim 2, characterized in that, The thickness of the side decreases along the second direction; the second direction is the direction in which the electrochromic functional layer points to the support portion.

4. The electrochromic device as described in claim 3, characterized in that, On the same side of the sealing structure, each of the support parts is spaced apart along a third direction, and the distance between two adjacent support parts is 5mm to 10mm; the third direction is perpendicular to the first direction and the second direction respectively.

5. The electrochromic device as described in claim 3, characterized in that, Along the second direction, the extension length of the side is 2mm to 10mm, and the extension length of the support is 2mm to 10mm.

6. The electrochromic device as described in claim 4, characterized in that, The cross-sectional shape of the support portion along the plane enclosed by the third direction and the second direction is one of rectangle, triangle, or semicircle.

7. The electrochromic device according to any one of claims 1-6, characterized in that, The sealing structure and the supporting part are made of the same heat-fusible flexible polymer material.

8. The electrochromic device as described in claim 7, characterized in that, The sealing structure is integrally formed with the support portion.

9. An electronic device, characterized in that, include: The electrochromic device as described in any one of claims 1-8.

10. A method for manufacturing an electrochromic device, characterized in that, include: The first and second substrates are made of the same heat-fusible flexible polymer material; The enclosure structure is prepared using the same material as the heat-fusible flexible polymer material; the enclosure structure includes a main body arranged in a closed ring shape, and a plurality of spaced support parts arranged on the inner sidewall of the main body; the main body and the support parts are integrally formed. The enclosure structure is disposed on the surface of the first base, and the first base and the enclosure structure form an accommodating space. The electrochromic functional layer is filled into the accommodating space; wherein the thickness of each of the supporting portions is equal to the thickness of the electrochromic functional layer; The second substrate is disposed on the side of the electrochromic functional layer away from the first substrate; A hot-pressing device is used for zoned hot-pressing. The hot-pressing head of the device applies pressure to the bottom of the first substrate in contact with the main body and the top of the second substrate in contact with the main body. The clearance area of ​​the hot-pressing head is correspondingly set to each of the support parts. The hot-pressing temperature is controlled above the glass transition temperature of the heat-fusible flexible polymer material, and the main body is fused with the first and second substrates to form an integrated sealed structure. Each of the support parts is in contact with the electrochromic functional layer and the top and bottom of the sealed structure, respectively.

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