Electrochromic device and terminal product

Abstract

The utility model provides an electrochromic device and a terminal product. The electrochromism device comprises a substrate layer, an electrochromism layer, a bonding layer and a cover plate layer which are sequentially stacked from bottom to top, and a certain distance is reserved between the peripheral edge of the electrochromism layer and the peripheral edge of the bonding layer and the peripheral edge of the substrate layer; and the water and oxygen blocking layer is arranged between the base plate layer and the cover plate layer, and the water and oxygen blocking layer covers the outer parts of the electrochromic layer and the bonding layer. According to the electrochromic device, the substrate layer and the cover plate layer can be bonded together by arranging the bonding layer, and the effect of isolating water and oxygen can be achieved by arranging the water and oxygen blocking layer, so that the durability and stability of the electrochromic performance can be effectively maintained.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electrochromic technology, and in particular to an electrochromic device and a terminal product. BACKGROUND

[0002] Compared with organic material electrochromic glass, inorganic all-solid-state electrochromic glass is the mainstream product at present. When the inorganic all-solid-state electrochromic glass is applied to a terminal product, strict requirements are imposed on its sealing packaging in order to ensure the persistence and stability of the electrochromic performance. However, the traditional process cannot meet the sealing requirements when used to package the inorganic all-solid-state electrochromic glass. CONTENT OF THE INVENTION

[0003] The present disclosure provides an electrochromic device and a terminal product to at least solve one of the technical problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, an electrochromic device is provided, comprising:

[0005] a substrate layer, an electrochromic layer, an adhesive layer and a cover plate layer which are sequentially stacked from bottom to top, wherein the four peripheral edges of the electrochromic layer and the adhesive layer are all at a certain distance from the four peripheral edges of the substrate layer;

[0006] and a water and oxygen barrier layer which is arranged between the substrate layer and the cover plate layer and covers the outside of the electrochromic layer and the adhesive layer.

[0007] In an implementable manner, a sealing adhesive layer is further included, which covers the four peripheral edges of the substrate layer, the water and oxygen barrier layer and the cover plate layer.

[0008] In an implementable manner, the areas of the electrochromic layer and the adhesive layer are equal.

[0009] In an implementable manner, the materials of the substrate layer and the cover plate layer are both glass.

[0010] In an implementable manner, the material of the adhesive layer is one of PVB, EVA, SGP and POE.

[0011] In an implementable manner, the material of the water and oxygen barrier layer is glue or a glue sheet with water and oxygen barrier capability.

[0012] In an implementable manner, the material of the water and oxygen barrier layer is butyl glue.

[0013] In an implementable manner, the material of the sealing adhesive layer is glue.

[0014] According to a second aspect of the present disclosure, there is provided a terminal product comprising the electrochromic device of any of the implementation forms of the first aspect.

[0015] In an implementation form, the terminal product comprises any one of a rearview mirror, a curtain wall, an automotive sunroof, an automotive windshield, a housing of an electronic product, glasses, a vehicle, or a display panel.

[0016] Compared with the prior art, the electrochromic device has the following advantages: 1) the electrochromic device can fix the substrate layer and the cover plate layer together by the adhesive layer, and can isolate water and oxygen by the water and oxygen barrier layer, so that the electrochromic device has a sealing effect, thereby effectively maintaining the durability and stability of the electrochromic performance; 2) the electrochromic device has a simple structure and is easy to operate; and 3) the electrochromic device can further ensure the sealing effect by further providing the sealing adhesive layer, thereby further prolonging the service life and stability of the electrochromic device.

[0017] It should be understood that the content described in this section is not intended to identify key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0019] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0020] Figure 1 A cross-sectional schematic view of an electrochromic device according to an embodiment of the present disclosure is shown.

[0021] Figure legend: 1 - cover plate layer, 2 - water and oxygen barrier layer, 3 - substrate layer, 4 - sealing adhesive layer, 5 - adhesive layer, 6 - electrochromic layer. DETAILED DESCRIPTION

[0022] In order to make the purposes, features and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0023] According to one embodiment of the present disclosure, the utility model provides an electrochromic device. As shown in the figure, an electrochromic device comprises: Figure 1

[0024] The substrate layer 3, the electrochromic layer 6, the adhesive layer 5 and the cover layer 1 are sequentially stacked from bottom to top, wherein the four peripheral edges of the electrochromic layer 6 and the adhesive layer 5 are all a certain distance from the four peripheral edges of the substrate layer 3.

[0025] And the water and oxygen barrier layer 2 is arranged between the substrate layer 3 and the cover layer 1 and covers the outside of the electrochromic layer 6 and the adhesive layer 5.

[0026] The electrochromic device provided in the embodiment can fix the substrate layer 3 and the cover layer 1 together through the adhesive layer 5, and can isolate water and oxygen through the water and oxygen barrier layer 2, so that the electrochromic device has a sealing effect and can effectively maintain the durability and stability of the electrochromic performance. The electrochromic device of the present application has a simple structure and is easy to operate.

[0027] For example, the four peripheral edges of the electrochromic layer 6 are a certain distance from the four peripheral edges of the substrate layer 3, which can be adjusted according to the requirements of the terminal product in actual application. The four peripheral edges of the adhesive layer 5 are a certain distance from the four peripheral edges of the substrate layer 3, which can be adjusted according to the requirements of the terminal product in actual application. Thus, the water and oxygen barrier layer 2 covers the outside of the electrochromic layer 6 and the adhesive layer 5, so as to prevent water and oxygen from entering the electrochromic layer 6.

[0028] For example, the area of the electrochromic layer 6 can be equal to the area of the adhesive layer 5, so that the distance between the four peripheral edges of the two and the edges of the substrate layer 3 is equal.

[0029] Of course, the area of the electrochromic layer 6 can also be slightly larger or slightly smaller than the area of the adhesive layer 5, that is, the distance L1 between the four peripheral edges of the electrochromic layer 6 and the four peripheral edges of the substrate layer 3, and the distance L2 between the four peripheral edges of the adhesive layer 5 and the four peripheral edges of the substrate layer 3, the difference between L1 and L2 is 0-1mm. This is because the material of the adhesive layer 5 is different, and when the electrochromic device is put into a vacuum heating device for high temperature and high pressure treatment, it will soften and then expand or shrink.

[0030] For example, the electrochromic layer 6 is an electrochromic film formed on the substrate layer 3 by physical vapor deposition.

[0031] For example, the materials of the substrate layer 3 and the cover layer 1 are both glass, such as transparent glass and tempered glass.

[0032] ​For example, the material of the bonding layer 5 is one of PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), SGP (SGP film, an ionic interlayer film, the main component is a copolymer of ethylene and methacrylic acid ester) and POE (polyolefin elastomer). Preferably, the bonding layer 5 is a PVB layer.

[0033] For example, the material of the water-oxygen barrier layer 2 is a glue or a film with water-oxygen barrier property. Preferably, the material of the water-oxygen barrier layer 2 is butyl glue.

[0034] For example, the material of the sealing glue layer 4 is glue.

[0035] In one embodiment, the electrochromic device further comprises a sealing glue layer 4, which is wrapped around the four edges of the substrate layer 3, the water-oxygen barrier layer 2 and the cover plate layer 1.

[0036] The electrochromic device of the present embodiment can further ensure the sealing effect by further providing the sealing glue layer 4, thereby further prolonging the service life and stability of the electrochromic device.

[0037] Taking the material of the substrate layer 3 as glass, the material of the bonding layer 5 as PVB film, the material of the cover plate layer 1 as glass and the material of the water-oxygen barrier layer 2 as butyl glue film as raw materials, the preparation process of the electrochromic device of the present application is exemplarily described as follows: a glass is provided, a magnetron sputtering is used to form an electrochromic film on the surface of the glass, and the four edges of the electrochromic film are at a certain distance from the edges of the glass, a solid PVC film is placed on the electrochromic film, then a butyl glue film is placed on the glass and wrapped outside the electrochromic film and the PVB film, and another glass is covered on the butyl glue film and the PVB film to obtain a semi-finished product of the electrochromic device, then the semi-finished product is put into a vacuum heating device for high-temperature and high-pressure treatment, and the upper and lower two layers of glass are extruded to make the PVB and the butyl glue be extruded until transparent. After taking out, the four outer parts of the upper and lower two layers of glass and the butyl glue are finally coated with sealing glue.

[0038] According to one embodiment of the present disclosure, the utility model also provides a terminal product, which further comprises the electrochromic device in any one of the above embodiments. The terminal product with the electrochromic device can effectively maintain the durability and stability of the electrochromic performance. For example, the terminal product includes any one of rearview mirror, curtain wall, automobile sunroof, automobile windshield, shell of electronic product, glasses, vehicle and display panel.

[0039] It should be understood that the various forms of flow shown above can be used to reorder, add, or delete steps. For example, the steps described in the present disclosure can be performed in parallel, in series, or in a different order, as long as the desired results of the technical solutions of the present disclosure can be achieved, which are not limited herein.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0041] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An electrochromic device, characterized by: The electrochromic device comprises: a substrate layer (3), an electrochromic layer (6), an adhesive layer (5) and a cover layer (1) stacked from bottom to top, wherein the electrochromic layer (6) and the adhesive layer (5) are both away from the four edges of the substrate layer (3); and a water-oxygen barrier layer (2) between the substrate layer (3) and the cover layer (1), and the water-oxygen barrier layer (2) covers the electrochromic layer (6) and the adhesive layer (5) outside. The electrochromic device further comprises a sealing glue layer (4) covering the four edges of the substrate layer (3), the water-oxygen barrier layer (2) and the cover layer (1).

2. The electrochromic device of claim 1, wherein: The electrochromic layer (6) and the adhesive layer (5) have equal areas.

3. The electrochromic device of claim 1, wherein: The materials of the substrate layer (3) and the cover layer (1) are both glass.

4. The electrochromic device of claim 1, wherein: The material of the adhesive layer (5) is one of PVB, EVA, SGP and POE.

5. The electrochromic device of claim 1, wherein: The material of the water-oxygen barrier layer (2) is glue or film with water-oxygen barrier capability.

6. Electrochromic device according to claim 5, characterized in that: The material of the water-oxygen barrier layer (2) is butyl glue.

7. The electrochromic device of claim 1, wherein: The material of the sealing glue layer (4) is glue.

8. A terminal product, characterized by: The electrochromic device of any one of claims 1-7.

9. The end product according to claim 8, characterized in that: The terminal product is any one of rearview mirror, curtain wall, automobile sunroof, automobile windshield, shell of electronic product, glasses, vehicle and display panel.

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