Flexible electrochromic device

Abstract

The utility model discloses a flexible electrochromic device. The electrochromic device comprises a first flexible current-conducting plate, a second flexible current-conducting plate, an electrochromic material arranged between the first flexible current-conducting plate and the second flexible current-conducting plate, and frame glue arranged between the first flexible current-conducting plate and the second flexible current-conducting plate and used for surrounding the electrochromic material. The frame adhesive comprises a flexible surrounding adhesive frame and a flexible water and oxygen blocking adhesive frame, wherein the flexible surrounding adhesive frame is arranged on the outer side of the electrochromic material, surrounds the electrochromic material and is not mutually soluble with the electrochromic material, and the flexible water and oxygen blocking adhesive frame surrounds the outer side of the flexible surrounding adhesive frame and is used for blocking external water and oxygen. According to the utility model, water and oxygen can be blocked to prevent the water and the oxygen from invading the inner side of the frame glue to react with the electrochromic material, the mutual dissolution of the frame glue and the electrochromic material can be avoided, the property of the electrochromic material can be kept stable, and the abnormal color change is further avoided.

Description

Technical Field

[0001] The utility model relates to a flexible electrochromic device. Background Art

[0002] At present, electrochromic glass can change its color and transparency under the action of electric field, and is widely used in the fields of camera lenses and car rearview mirrors. For example, a Chinese patent with announcement number CN207249313U discloses an electrochromic glass. The hardness of electrochromic glass is very high, so it is easy to burst when it is impacted, while flexible electrochromic devices can bend and deform, so they are not easy to burst, so the application of flexible electrochromic devices is becoming more and more popular. Flexible electrochromic devices have electrochromic materials and frame glue surrounding the outer periphery of the electrochromic material. The frame glue is formed by curing glue. Epoxy glue, which is currently widely used in electrochromic glass, cannot be used in flexible electrochromic devices because epoxy glue is brittle after curing, and flexible electrochromic devices will cause the cured epoxy glue to break when bent and then cause the bonding to be detached.

[0003] Therefore, the glue used to make the border glue in the flexible electrochromic device must have good flexibility and adhesion. In addition, it is also required to have good water and oxygen barrier properties and not be miscible with the electrochromic material. However, the existing glue cannot meet all of the above requirements at the same time. Among the commonly used glues, the glue that meets the requirements of adhesion and flexibility cannot take into account the requirements of water and oxygen barrier properties and not being miscible with the electrochromic material at the same time, which leads to abnormalities in the existing flexible electrochromic devices after long-term use. At present, some existing flexible electrochromic devices use glue with good water and oxygen barrier properties to make border glue. After long-term use, the border glue of this type of flexible electrochromic device will be miscible with the electrochromic material, which will affect the optical properties of the electrochromic material, resulting in unclear boundaries of the color change area, and even abnormal color change. Some other existing flexible electrochromic devices use glue that is not miscible with the electrochromic material to make the frame glue. After long-term use, this type of flexible electrochromic device cannot effectively block water and oxygen, causing water and oxygen to gradually invade the inside of the frame glue and react chemically with the electrochromic material, thereby causing the electrochromic material to turn black or yellow, affecting the optical properties of the electrochromic material, and causing abnormal color change. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a flexible electrochromic device, which can not only block water and oxygen to prevent water and oxygen from invading the inner side of the frame glue and reacting with the electrochromic material, but also avoid the mutual dissolution of the frame glue and the electrochromic material, and can keep the properties of the electrochromic material stable, thereby avoiding abnormal color change.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a flexible electrochromic device, which includes:

[0006] a first flexible conductive plate and a second flexible conductive plate;

[0007] an electrochromic material disposed between the first flexible conductive plate and the second flexible conductive plate;

[0008] A frame glue disposed between the first flexible conductive plate and the second flexible conductive plate and used to surround the electrochromic material;

[0009] Among them, the border glue includes a flexible surrounding glue frame which is arranged on the outside of the electrochromic material and surrounds the electrochromic material and is not miscible with the electrochromic material, and a flexible water-oxygen blocking glue frame which surrounds the outside of the flexible surrounding glue frame and is used to block external water and oxygen.

[0010] Furthermore, the flexible surrounding glue frame adopts any one of Benno 3911UV glue, Delu SJ4222 glue and Kufoxin 3612 glue.

[0011] Furthermore, the flexible water and oxygen barrier glue frame adopts any one of Jun Viscose UV6200 glue, Yousim 3602 glue and Silica AS3953 glue.

[0012] Furthermore, the width of the flexible surrounding rubber frame is 0.2-0.4 mm, and the width of the flexible water and oxygen barrier rubber frame is 0.6-0.8 mm.

[0013] Furthermore, the width of the flexible surrounding rubber frame is 0.3 mm, and the width of the flexible water and oxygen barrier rubber frame is 0.7 mm.

[0014] Furthermore, the first flexible conductive plate and the second flexible conductive plate are both transparent.

[0015] Further, the first flexible conductive plate includes a first flexible substrate and a first conductive film layer provided on the first flexible substrate;

[0016] The second flexible conductive plate includes a second flexible substrate and a second conductive film layer provided on the second flexible substrate;

[0017] The electrochromic material, the flexible surrounding rubber frame and the flexible water and oxygen blocking rubber frame are all arranged between the first conductive film layer and the second conductive film layer.

[0018] Furthermore, the material of the first flexible substrate and the second flexible substrate is any one of PET, TAC and PC.

[0019] Furthermore, the first conductive film layer and the second conductive film layer are both ITO conductive films.

[0020] After adopting the above technical scheme, the electrochromic material is surrounded by the flexible surrounding glue frame, and the flexible surrounding glue frame will not be miscible with the electrochromic material. Then, a flexible water-oxygen barrier glue frame is arranged on the outside of the flexible surrounding glue frame. The flexible water-oxygen barrier glue frame can effectively block external water and oxygen, thereby preventing water and oxygen from invading the inner side of the frame glue and reacting chemically with the electrochromic material. Therefore, it can prevent the frame glue from being miscible with the electrochromic material and can also effectively block water and oxygen, thereby keeping the properties of the electrochromic material stable and avoiding the problem of abnormal color change. Specifically, the flexible surrounding glue frame and the flexible water-oxygen barrier glue frame are formed by curing different glues. The adhesion and flexibility of the flexible surrounding glue frame meet the requirements and are not miscible with the electrochromic material, but the water-oxygen barrier property of the flexible surrounding glue frame cannot meet the requirements and cannot block external water and oxygen; the adhesion, flexibility and water-oxygen barrier property of the flexible water-oxygen barrier glue frame can meet the requirements and can block the electrochromic material from external water and oxygen, but the flexible water-oxygen barrier glue frame will be miscible with the electrochromic material after contacting it. Therefore, neither the flexible surrounding glue frame nor the flexible water-oxygen barrier glue frame can be used alone. In the embodiment of the present application, the flexible surrounding glue frame is arranged on the inside to contact the electrochromic material, and the flexible water-oxygen barrier glue frame is arranged on the outside to block water and oxygen, so that the adhesion, flexibility and water-oxygen barrier properties of the frame glue can meet the requirements and will not be miscible with the electrochromic material. Therefore, the flexible electrochromic device of the embodiment of the present application can not only block water and oxygen to prevent water and oxygen from invading the inside of the frame glue and reacting with the electrochromic material, but also avoid the miscibility of the frame glue and the electrochromic material, so that the properties of the electrochromic material can remain stable, thereby avoiding the problem of abnormal color change. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the flexible electrochromic device of the utility model;

[0022] Figure 2 It is a cross-sectional view of the flexible electrochromic device of the present utility model. DETAILED DESCRIPTION

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0024] like Figure 1 , 2As shown, a flexible electrochromic device comprises:

[0025] A first flexible conductive plate 100 and a second flexible conductive plate 200;

[0026] An electrochromic material 1 disposed between the first flexible conductive plate 100 and the second flexible conductive plate 200;

[0027] A frame glue 300 disposed between the first flexible conductive plate 100 and the second flexible conductive plate 200 and used to surround the electrochromic material 1;

[0028] Among them, the border glue 300 includes a flexible surrounding glue frame 2 which is arranged on the outside of the electrochromic material 1 and surrounds the electrochromic material 1 and is not miscible with the electrochromic material 1, and a flexible water-oxygen blocking glue frame 3 which surrounds the outside of the flexible surrounding glue frame 2 and is used to block external water and oxygen.

[0029] Specifically, the electrochromic material 1 is surrounded by the flexible surrounding glue frame 2, and the flexible surrounding glue frame 2 will not be miscible with the electrochromic material 1. Then, a flexible water-oxygen blocking glue frame 3 is arranged on the outside of the flexible surrounding glue frame 2. The flexible water-oxygen blocking glue frame 3 can effectively block external water and oxygen, thereby preventing water and oxygen from invading the inner side of the frame glue 300 and reacting chemically with the electrochromic material 1. Therefore, it can prevent the frame glue 300 from being miscible with the electrochromic material 1 and can also effectively block water and oxygen, thereby keeping the properties of the electrochromic material 1 stable and avoiding the problem of abnormal color change.

[0030] To be more specific, the flexible surrounding glue frame 2 and the flexible water-oxygen barrier glue frame 3 are formed by curing different glues. The adhesion and flexibility of the flexible surrounding glue frame 2 meet the requirements and are not miscible with the electrochromic material 1, but the water-oxygen barrier property of the flexible surrounding glue frame 2 cannot meet the requirements and cannot block external water and oxygen; the adhesion, flexibility and water-oxygen barrier property of the flexible water-oxygen barrier glue frame 3 can meet the requirements and can block the electrochromic material 1 from external water and oxygen, but the flexible water-oxygen barrier glue frame 3 will be miscible with the electrochromic material 1 after contacting, so neither the flexible surrounding glue frame 2 nor the flexible water-oxygen barrier glue frame 3 can be used alone. In the embodiment of the present application, the flexible surrounding glue frame 2 is arranged on the inside to contact the electrochromic material 1, and the flexible water-oxygen blocking glue frame 3 is arranged on the outside to block water and oxygen, so that the adhesion, flexibility and water-oxygen blocking properties of the frame glue 300 can meet the requirements and will not be miscible with the electrochromic material 1. Therefore, the flexible electrochromic device of the embodiment of the present application can not only block water and oxygen to prevent water and oxygen from invading the inside of the frame glue 300 and reacting with the electrochromic material 1, but also avoid the frame glue 300 and the electrochromic material 1 from being miscible, so that the properties of the electrochromic material 1 can be kept stable, thereby avoiding the problem of abnormal color change. In this embodiment, the electrochromic material 1 can be an electrochromic solution.

[0031] In this embodiment, the flexible surrounding glue frame 2 can use Benno 3911 UV glue, and the flexible water and oxygen barrier glue frame 3 can use Jun Viscose UV6200 glue. Of course, in some embodiments, the flexible surrounding glue frame 2 can use Delu SJ4222 glue or Kufoxin 3612 glue, and the flexible water and oxygen barrier glue frame 3 can use Yousim 3602 glue or Silica AS3953 glue.

[0032] Specifically, Benno 3911UV glue is model 3911UV glue of Shanghai Benno Electronic Materials Co., Ltd., Delu SJ4222 glue is model SJ4222 glue of Delu Industrial Adhesives Shanghai Co., Ltd., and Kufo New 3612 glue is model 3612 glue of Shanghai Kufo New Materials Co., Ltd. These glues have good adhesion and flexibility and are not miscible with electrochromic material 1. Therefore, they can simultaneously meet the requirements of adhesion, flexibility and non-miscibility with electrochromic material 1, but have poor water and oxygen barrier properties.

[0033] Specifically, Jun Viscose UV6200 glue is the model UV6200 glue of Dongguan Jun Viscose Co., Ltd., Usim 3602 glue is the model 3602 glue of Usim Shenzhen Technology Co., Ltd., and Silica AS3953 glue is the model AS3953 glue of Suzhou Silica Electronics Co., Ltd. These glues have good adhesion, flexibility and water and oxygen barrier properties, and can meet the requirements of adhesion, flexibility and water and oxygen barrier properties at the same time, but will be miscible with electrochromic material 1.

[0034] like Figure 1 , 2 As shown, the width of the flexible surrounding rubber frame 2 can be 0.2-0.4 mm, and the width of the flexible water and oxygen barrier rubber frame 3 can be 0.6-0.8 mm; in this embodiment, the width of the flexible surrounding rubber frame 2 is preferably 0.3 mm, and the width of the flexible water and oxygen barrier rubber frame 3 is preferably 0.7 mm.

[0035] like Figure 1 , 2 As shown, the first flexible conductive plate 100 and the second flexible conductive plate 200 are both transparent;

[0036] The first flexible conductive plate 100 includes a first flexible substrate 4 and a first conductive film layer 5 provided on the first flexible substrate 4;

[0037] The second flexible conductive plate 200 includes a second flexible substrate 6 and a second conductive film layer 7 provided on the second flexible substrate 6;

[0038] The electrochromic material 1 , the flexible surrounding rubber frame 2 and the flexible water and oxygen blocking rubber frame 3 are all arranged between the first conductive film layer 5 and the second conductive film layer 7 .

[0039] In this embodiment, the first flexible substrate 4 and the second flexible substrate 6 can be made of PET. The PET material can make the first flexible substrate 4 and the second flexible substrate 6 have good impact resistance and light transmittance, and will not break and cause danger when subjected to external impact. Of course, in some embodiments, the first flexible substrate 4 and the second flexible substrate 6 can also be made of TAC material or PC material.

[0040] In this embodiment, both the first conductive film layer 5 and the second conductive film layer 7 can be ITO conductive films.

[0041] To summarize, the electrochromic material 1 is surrounded by the flexible surrounding glue frame 2, and the flexible surrounding glue frame 2 will not be miscible with the electrochromic material 1. Then, a flexible water-oxygen blocking glue frame 3 is arranged on the outside of the flexible surrounding glue frame 2. The flexible water-oxygen blocking glue frame 3 can effectively block external water and oxygen, thereby preventing water and oxygen from invading the inside of the frame glue 300 and reacting chemically with the electrochromic material 1. Therefore, it can prevent the frame glue 300 from being miscible with the electrochromic material 1, and can also effectively block water and oxygen, thereby keeping the properties of the electrochromic material 1 stable and avoiding the problem of abnormal color change. Specifically, the flexible surrounding glue frame 2 and the flexible water-oxygen barrier glue frame 3 are formed by curing different glues. The adhesion and flexibility of the flexible surrounding glue frame 2 meet the requirements and are not miscible with the electrochromic material 1, but the water-oxygen barrier property of the flexible surrounding glue frame 2 cannot meet the requirements and cannot block external water and oxygen; the adhesion, flexibility and water-oxygen barrier property of the flexible water-oxygen barrier glue frame 3 can meet the requirements and can block the electrochromic material 1 from external water and oxygen, but the flexible water-oxygen barrier glue frame 3 will be miscible with the electrochromic material 1 after contacting, so neither the flexible surrounding glue frame 2 nor the flexible water-oxygen barrier glue frame 3 can be used alone. In the embodiment of the present application, the flexible surrounding glue frame 2 is arranged on the inside to contact the electrochromic material 1, and the flexible water-oxygen barrier glue frame 3 is arranged on the outside to block water and oxygen, so that the adhesion, flexibility and water-oxygen barrier properties of the border glue 300 can meet the requirements and will not be miscible with the electrochromic material 1. Therefore, the flexible electrochromic device of the embodiment of the present application can not only block water and oxygen to prevent water and oxygen from invading the inside of the border glue 300 and reacting with the electrochromic material 1, but also avoid the border glue 300 and the electrochromic material 1 from being miscible, so that the properties of the electrochromic material 1 can remain stable, thereby avoiding the problem of abnormal color change.

[0042] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible electrochromic device, characterized in that: It includes: A first flexible conductive plate (100) and a second flexible conductive plate (200); An electrochromic material (1) disposed between the first flexible conductive plate (100) and the second flexible conductive plate (200); A frame glue (300) disposed between the first flexible conductive plate (100) and the second flexible conductive plate (200) and used to surround the electrochromic material (1); The frame glue (300) comprises a flexible surrounding glue frame (2) which is arranged on the outside of the electrochromic material (1) and surrounds the electrochromic material (1) and is not miscible with the electrochromic material (1), and a flexible water-oxygen blocking glue frame (3) which surrounds the outside of the flexible surrounding glue frame (2) and is used to block external water and oxygen.

2. The flexible electrochromic device according to claim 1, characterized in that: The flexible surrounding glue frame (2) is made of any one of Benno 3911UV glue, Delu SJ4222 glue and Kufoxin 3612 glue.

3. The flexible electrochromic device according to claim 1, characterized in that: The flexible water-oxygen barrier glue frame (3) is made of any one of the following: Jun Glue UV6200 glue, Usim 3602 glue and Silica AS3953 glue.

4. The flexible electrochromic device according to claim 1, characterized in that: The width of the flexible surrounding rubber frame (2) is 0.2-0.4 mm, and the width of the flexible water and oxygen barrier rubber frame (3) is 0.6-0.8 mm.

5. The flexible electrochromic device according to claim 1, characterized in that: The width of the flexible surrounding rubber frame (2) is 0.3 mm, and the width of the flexible water and oxygen barrier rubber frame (3) is 0.7 mm.

6. The flexible electrochromic device according to claim 1, characterized in that: The first flexible conductive plate (100) and the second flexible conductive plate (200) are both transparent.

7. The flexible electrochromic device according to claim 1, characterized in that: The first flexible conductive plate (100) comprises a first flexible substrate (4) and a first conductive film layer (5) provided on the first flexible substrate (4); The second flexible conductive plate (200) comprises a second flexible substrate (6) and a second conductive film layer (7) provided on the second flexible substrate (6); The electrochromic material (1), the flexible surrounding rubber frame (2) and the flexible water and oxygen blocking rubber frame (3) are all arranged between the first conductive film layer (5) and the second conductive film layer (7).

8. The flexible electrochromic device according to claim 7, characterized in that: The material of the first flexible substrate (4) and the second flexible substrate (6) is any one of PET, TAC and PC.

9. The flexible electrochromic device according to claim 7, characterized in that: The first conductive film layer (5) and the second conductive film layer (7) are both ITO conductive films.

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