CN221827149U

CN221827149U - Electrochromic diaphragm, electrochromic device and terminal product

Info

Publication number: CN221827149U
Application number: CN202420277849.2U
Authority: CN
Inventors: 史智睿
Original assignee: Shenzhen Guangyi Tech Co Ltd
Current assignee: Shenzhen Guangyi Tech Co Ltd
Priority date: 2024-02-05
Filing date: 2024-02-05
Publication date: 2024-10-11
Anticipated expiration: 2034-02-05

Abstract

The application provides an electrochromic diaphragm, a color changing device and a terminal product, and belongs to the technical field of electrochromic. The electrochromic film comprises a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are stacked; the first groove penetrates through the first substrate layer, the first conductive layer and the electrochromic layer, and the second groove penetrates through the second substrate layer, the second conductive layer and the electrochromic layer; the first conductor is electrically connected with the corresponding second conductive layer at the first groove; the second conductor is electrically connected with the first conductive layer corresponding to the second groove; the first conductor and the second conductor have a width d ₁ in the direction from the edge to the center of the electrochromic film. The widths of the first conductor and the second conductor are reduced, so that the occupied area of the first conductor and the second conductor on the electrochromic membrane is reduced, the visible area of the electrochromic membrane is increased under the electrochromic membrane with the same area, and the effective utilization rate of the electrochromic membrane is improved.

Description

Electrochromic diaphragm, electrochromic device and terminal product

Technical Field

The application relates to the technical field of electrochromic, in particular to an electrochromic diaphragm, a electrochromic device and a terminal product.

Background

Electrochromic is a technology in which an electrochromic material is reversibly and stably colored or discolored under the action of an external voltage. In general, by providing a bus bar on a conductive layer of an electrochromic film, the electrochromic film is electrically connected to an external power supply through the bus bar, thereby forming a voltage across the electrochromic film, and the electrochromic material of the electrochromic film changes in color in response to a change in voltage across the electrochromic film.

To conceal the bus bar, the electrochromic film is aesthetically pleasing in appearance, with a masking width of at least 10mm from the edge of the electrochromic film to the center portion of the electrochromic film. This arrangement results in a reduced viewing area, affecting the effective utilization of the membrane.

Disclosure of utility model

In view of the above, the present application aims to overcome the defects in the prior art, and provide an electrochromic film, a electrochromic device and an end product.

In a first aspect, the present application provides an electrochromic film, including a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second substrate layer that are stacked;

the electrochromic film is provided with a first groove and a second groove;

The first groove penetrates through the first substrate layer, the first conductive layer and the electrochromic layer, and the second groove penetrates through the second substrate layer, the second conductive layer and the electrochromic layer;

A first conductor is arranged on one side of the first substrate layer and is electrically connected with a second conductive layer corresponding to the first groove;

A second conductor is arranged on one side of the second substrate layer and is electrically connected with the first conductive layer corresponding to the second groove;

The width of the first conductor in the direction from the edge to the center of the electrochromic diaphragm is d ₁, wherein the value range of d ₁ is 0.2 mm- ₁ mm; and/or the width of the second conductor in the direction from the edge to the center of the electrochromic film is d ₂, wherein the value range of d ₂ is 0.2 mm-d ₂ -2 mm.

Further, the width of the first groove in the direction from the edge to the center of the electrochromic film is d ₃, wherein the value range of d ₃ is 2 mm- ₃ mm; and/or the width of the second groove in the direction from the edge to the center of the electrochromic film is d ₄, wherein the value range of d ₄ is 2 mm-d ₄ -3 mm.

Further, the first grooves and the second grooves are respectively multiple, and the first grooves and the second grooves are alternately arranged at the edge of the electrochromic film.

Further, along the arrangement direction of the first groove, two opposite side walls of the first groove are provided with first insulating layers, and the first insulating layers at least cover the first conductive layers corresponding to the side walls of the first groove; and/or, along the arrangement direction of the second grooves, second insulating layers are arranged on two opposite side walls of the second grooves, and the second insulating layers at least cover the second conductive layers corresponding to the opposite side walls of the second grooves.

Further, the first insulating layer extends to cover a portion of the surface of the first base layer; and/or the second insulating layer extends over a portion of the surface of the second substrate layer.

Further, a third insulating layer is arranged on one side, facing the middle part of the electrochromic diaphragm, of the first groove, and covers the side wall, facing the middle part of the electrochromic diaphragm, of the first groove; and/or one side of the second groove, which faces the middle part of the electrochromic diaphragm, is provided with a fourth insulating layer, and the fourth insulating layer covers the side wall of the second groove, which faces the middle part of the electrochromic diaphragm.

Further, the third insulating layer extends to cover a portion of the surface of the first base layer; and/or the fourth insulating layer extends to cover a portion of the surface of the second substrate layer.

Further, the first groove is filled with a fifth insulating layer, the fifth insulating layer covers the first conductor corresponding to the first groove, and a part of the fifth insulating layer extends to cover a part of the first substrate layer, which is away from the second substrate layer; and/or, the second groove is filled with a sixth insulating layer, the sixth insulating layer covers the second conductor corresponding to the second groove, and a part of the sixth insulating layer extends to cover a part of the second substrate layer, which is away from the first substrate layer.

Further, a first high-temperature glue is arranged on one side, away from the second substrate layer, of the first conductor, and the first high-temperature glue covers the first conductor and the first groove; and/or a second high-temperature glue is arranged on one side of the second conductor, which is away from the first substrate layer, and the second high-temperature glue covers the second conductor and the second groove.

In a second aspect, some embodiments of the present application provide a color changing device comprising the electrochromic film.

In a third aspect, some embodiments of the present application provide an end product comprising an electrochromic film as described or a color changing device as described, 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.

Embodiments of the present application have the following advantages: the widths of the first conductor and the second conductor are reduced, so that the occupied area of the first conductor and the second conductor on the electrochromic film is reduced, the width of a non-visible area of the electrochromic film is reduced, the area of a visible area of the electrochromic film is increased under the electrochromic film with the same area, the effective utilization rate of the electrochromic film is improved, and the user experience is improved.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first embodiment of an electrochromic film according to some embodiments of the present application;

FIG. 2 illustrates a schematic diagram of another view of an electrochromic film provided by some embodiments of the present application;

FIG. 3-1 is a schematic view of a second embodiment of an electrochromic film according to some embodiments of the present application;

Fig. 3-2 illustrates a schematic structural view of another view of a second embodiment of an electrochromic film provided by some embodiments of the present application;

FIG. 4 shows a cross-sectional view of section A-A of FIG. 3-1;

FIG. 5 shows a cross-sectional view of section B-B of FIG. 3-1;

FIG. 6 is a schematic view of a third embodiment of an electrochromic film according to some embodiments of the present application;

Fig. 7 shows a schematic structural diagram of another view of a third embodiment of an electrochromic film provided by some embodiments of the application.

Description of main reference numerals:

100-electrochromic film; 110-a first substrate layer; 120-a first conductive layer; 130-electrochromic layer; 140-a second conductive layer; 150-a second substrate layer; 200-a first conductor; 300-a second conductor; 160-a first groove; 170-a second groove; 400-a first insulating layer; 500-a second insulating layer; 600-a third insulating layer; 700-fourth insulating layer; 800-a fifth insulating layer; 900-sixth insulating layer.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application provide an electrochromic film capable of reducing the width of the non-visible area of the electrochromic film 100, increasing the area of the visible area of the electrochromic film 100, and improving the effective electrochromic area of the electrochromic film 100. The electrochromic diaphragm provided by the application is mainly applied to large-area devices such as windows, e.g. building curtain walls, automobile skylights, automobile side windows, aircraft portholes and the like. The present application will be described in detail with reference to fig. 1 to 7 and examples 1 to 17. It is noted that the features of the following embodiments may be used in any combination without conflict.

Example 1

Referring to fig. 1 to 3-1 and 3-2, in the present embodiment, the electrochromic film includes a first substrate layer 110, a first conductive layer 120, an electrochromic layer 130, a second conductive layer 140 and a second substrate layer 150 that are stacked. The first substrate layer 110 and the second substrate layer 150 are both made of transparent and flexible materials, such as PET (Polyethylene terephthalate ), PC, etc., and the first conductive layer 120 and the second conductive layer 140 are both made of transparent conductive oxides, such as ITO (Indium Tin Oxide), IZO, etc.

Wherein the electrochromic film 100 includes a center portion and an edge portion adjacent to the center portion, i.e., the edge portion is connected to the center portion and surrounds the center portion.

Since the bus bars of most electrochromic films are disposed at the edges of the electrochromic films, so that the visible area corresponds to the center portion of the films and does not obstruct the view angle of the user, the present embodiment will be described in detail by taking the first and second grooves 160 and 170 disposed at the edges of the electrochromic films as an example. Of course, in other embodiments, the first recess 160 and the second recess 170 may be provided in the middle of the electrochromic film so as to provide a bus bar for powering the electrochromic film. The electrochromic film 100 is provided with a first groove 160 and a second groove 170. In this embodiment, at least one first groove 160 and at least one second groove 170 are provided, that is, the number of the first grooves 160 and the second grooves 170 may be one, two or more than two, which may be specifically set according to practical situations.

Wherein the first groove 160 penetrates the first base layer 110, the first conductive layer 120, and the electrochromic layer 130, so that a portion of the second conductive layer 140 can be exposed from the first groove 160, and a first electrode is formed at an edge of the electrochromic film.

In addition, the second groove 170 penetrates the second base layer 150, the second conductive layer 140, and the electrochromic layer 130 so that a portion of the first conductive layer 120 can be exposed from the second groove 170 and a second electrode is formed at an edge of the electrochromic film.

Further, a first conductor 200 is disposed on one side of the first substrate layer 110, the first conductor 200 is disposed on one side of the first substrate layer 110 facing away from the second substrate layer 150, and the first conductor 200 extends along the arrangement direction of the first grooves 160. A portion of the first conductor 200 facing the first grooves 160 is connected to the corresponding exposed second conductive layer 140 at the first grooves 160, and the second conductive layer 140 can be connected to an external power source through the first conductor 200, that is, an external current can be conducted to the corresponding exposed second conductive layer 140 at each first groove 160 through the first conductor 200, so that the current can be conducted to other areas of the second conductive layer 140 through a plurality of electrodes on the second conductive layer 140, and the conduction speed of the current on the second conductive layer 140 is improved. In addition, a portion of the first conductor 200 facing the first substrate layer 110 is connected to the surface of the first substrate layer 110 and extends along the periphery of the electrochromic device to contact each of the second electrodes, so that the second electrodes are connected in series and integrated, and the second electrodes are connected to one power terminal, thereby realizing current conduction to a plurality of points and accelerating the color changing speed of the electrochromic film 100.

In addition, a second conductor 300 is disposed on one side of the second substrate layer 150, the second conductor 300 is disposed on one side of the second substrate layer 150 facing away from the first substrate layer 110, and the second conductor 300 extends along the arrangement direction of the second grooves 170 and is connected to the corresponding exposed first conductive layer 120 at each second groove 170, and the first conductive layer 120 can be connected to an external power source through the second conductor 300, i.e. external current can be conducted to the corresponding exposed first conductive layer 120 at each second groove 170 through the second conductor 300 and then conducted to the central portion of the first conductive layer 120. The plurality of second grooves 170 are provided, and a multi-electrode structure is formed on the first conductive layer 120, so that current can be conducted to other areas of the first conductive layer 120 through the plurality of electrodes on the first conductive layer 120, so as to increase the conduction speed of the current on the first conductive layer 120, thereby increasing the color-changing speed of the electrochromic film 100. By connecting a portion of the second conductor 300 facing the second substrate layer 150 to the surface of the second substrate layer 150 and extending along the periphery of the electrochromic device to contact each second electrode, so as to combine the first electrodes in series, each first electrode is connected to one power terminal, so that current is conducted to a plurality of points, and the color change speed of the electrochromic film 100 is increased.

It can be appreciated that by providing the plurality of first grooves 160 and the plurality of second grooves 170 on the electrochromic film to form a multi-electrode structure on the electrochromic film, external current can be conducted to the rest of the second conductive layer 140 through the corresponding exposed second conductive layer 140 at each first groove 160, external current can be conducted to the rest of the first conductive layer 120 through the corresponding exposed first conductive layer 120 at each second groove 170, and the boost current is conducted at the conduction speeds on the first conductive layer 120 and the second conductive layer 140, thereby increasing the color change speed of the electrochromic film.

In the present embodiment, the width of the first conductor 200 in the direction from the edge to the center of the electrochromic film 100 is d ₁, where d ₁ has a value range of 0.2mm less than or equal to d ₁ less than or equal to 2mm; or the width of the second conductor 300 in the direction from the edge to the center of the electrochromic film 100 is d ₂, wherein d ₂ is 0.2 mm-d ₂ -2 mm.

Additionally, in some embodiments. The width of the first conductor 200 in the direction from the edge to the center of the electrochromic film 100 is d ₁, wherein the value range of d ₁ is 0.2 mm-d ₁ -2 mm; and the width of the second conductor 300 in the direction from the edge to the center of the electrochromic film 100 is d ₂, wherein d ₂ has a value ranging from 0.2mm to ₁ mm to 2mm. It is understood that the width d ₁ of the first conductor 200 and the width d ₂ of the second conductor 300 may be any value from 0.2mm to 2mm, and may be specifically set according to practical situations.

Compared with the prior art, the width of the first conductor 200 and the width of the second conductor 300 are reduced, so that the occupied area of the first conductor 200 and the second conductor 300 on the electrochromic film 100 are reduced, the width of a non-visible area at the edge of the electrochromic film 100 is reduced, the area of a visible area in the electrochromic film 100 is increased, and the effective utilization rate of the electrochromic film 100 is improved. The width of the non-visible region of electrochromic film 100 shown here refers to the width of the non-visible region extending inward from the edge of electrochromic film 100.

In this embodiment, the first conductor 200 and the second conductor 300 are both conductive silver paste. It should be noted that, in the conventional manner of laying electrodes on the copper foil with ancillary volume material, the minimum width of the coiled material such as copper foil is wider and the minimum width is 3mm due to the limitation of the process. Thus, it is necessary to provide a wider area arrangement electrode on the electrochromic film and a wider shielding area to cover the copper foil, so that the area of the visible area of the electrochromic film is reduced under the same area of the film. Therefore, the silver paste is arranged in the arrangement direction of the first grooves 160 by spraying the silver paste, the caliber of the spray gun can be adjusted in the process of spraying the silver paste so as to control the width of the sprayed silver paste, and the silver paste is dried so as to form the first conductor 200, thereby realizing the control of the width of the first conductor 200. Similarly, the width of the second conductor 300 can be controlled by spraying silver paste. Through changing the mode of cloth electrode from original subsides ancillary volume material copper foil to the mode of point silver thick liquid and toasting solidification, not only can reduce the width of silver thick liquid, promote the area in the visual zone in electrochromic diaphragm 100, but also can control the width of silver thick liquid according to actual conditions at the in-process of point silver thick liquid to promote the flexibility that the electrode laid.

Example 2

Based on any of the above embodiments, referring to fig. 1, in this embodiment, the width of the first groove 160 in the direction from the edge to the center of the electrochromic film 100 is d ₃, where d ₃ has a value range of 2mm less than or equal to d ₃ less than or equal to 3mm; or the width of the second groove 170 in the direction from the edge to the center of the electrochromic film 100 is d ₄, wherein d ₄ is 2 mm-d ₄ -3 mm.

In some embodiments, the width of the first groove 160 in the direction from the edge to the center of the electrochromic film 100 is d ₃, wherein d ₃ has a value ranging from 2mm to d ₃ to 3mm; and the width of the second groove 170 in the direction from the edge to the center of the electrochromic film 100 is d ₄, wherein d ₄ is 2 mm-d ₄ -3 mm.

It is understood that the width d ₃ of the first groove 160 and the width d ₄ of the second groove 170 may be any value from 2mm to 3mm, and may be specifically set according to practical situations.

It should be understood that the width of the first groove 160 is larger than the width of the first conductor 200, so that a gap is formed between the first conductor 200 and the sidewall of the first groove 160, so as to prevent the first conductor 200 from being connected to the first conductive layer 120 leaking from the sidewall of the first groove 160 and the second conductive layer 140 leaking from the bottom of the first groove 160 at the same time. Meanwhile, the width of the second groove 170 is greater than the width of the second conductor 300, so that a gap is formed between the second conductor 300 and the sidewall of the second groove 170, and the second conductor 300 is prevented from being connected with the first conductive layer 120 leaked from the bottom of the second groove 170 and the second conductive layer 140 leaked from the sidewall of the second groove 170 at the same time.

It should be noted that, if the difference between the value of d ₁ and the value of d ₃ is smaller, and the difference between the value of d ₂ and the value of d ₄ is smaller, the electrochromic film 100 is still easy to contact the first conductor 200 with the first conductive layer 120 leaked from the first groove 160 during the lamination process, and the first conductor 200 is easy to contact the second conductive layer 140 leaked from the side wall of the second groove 170, so that a short circuit occurs. Thus, in the present embodiment, the width of the first groove 160 and the width of the second groove 170 are both 3mm.

In this embodiment, by properly increasing the widths of the first groove 160 and the second groove 170, the occurrence of a short circuit at the edge of the electrochromic film 100 can be effectively avoided, and at the same time, the width required to be masked is reduced, and the area of the visible region is increased.

Example 3

In this embodiment, please refer to fig. 3-1 and 3-2, in which the solid line grooves indicate penetration from the paper surface into the paper, and the dotted line grooves indicate penetration from the back of the paper surface. The first grooves 160 and the second grooves 170 are respectively provided in plurality, and the first grooves 160 and the second grooves 170 are alternately arranged at the edge of the electrochromic film 100 in sequence to form a multi-electrode structure at the edge of the electrochromic film 100.

Specifically, the electrochromic film 100 is provided with a first conductor 200 and a second conductor 300 on opposite sides in the thickness direction thereof, respectively. By connecting the first conductors 200 with the corresponding second conductive layers 140 at each first groove 160, the second conductors 300 are connected with the corresponding first conductive layers 120 at each second groove 170, so that external current can be conducted to the center through the corresponding second conductive layers 140 at each first groove 160, and simultaneously, external current can be conducted to the center through the corresponding first conductive layers 120 at each second groove 170, so that current is conducted from the periphery to the center in the electrochromic film 100, that is, the electrochromic film 100 is discolored from the periphery to the center, so that the color changing speed of the electrochromic film 100 is further improved.

Example 4

Based on any of the above embodiments, in the present embodiment, referring to fig. 6, along the arrangement direction of the first groove 160 and the second groove 170, the opposite side walls of the first groove 160 are provided with the first insulating layer 400, and the first insulating layer 400 at least covers the first conductive layer 120 corresponding to the opposite side walls of the first groove 160, so that an insulating barrier structure is formed between the first conductor 200 and the side walls of the first groove 160 through the first insulating layer 400, and the first conductive layer 120 exposed from the opposite side walls of the first groove 160 is prevented from being connected to each other, so that a short circuit occurs. It may be appreciated that the first insulating layer 400 covers the first conductive layer corresponding to the first groove 160, or the first insulating layer 400 covers the first conductive layer 120 and the first substrate layer 110 corresponding to the first groove 160, or the first insulating layer 400 covers the first conductive layer 120, the electrochromic layer 130 corresponding to the first groove 160, or the first insulating layer 400 covers the first substrate layer 110, the first conductive layer 120 and the electrochromic layer 130 corresponding to the first groove 160, which may be specifically set according to practical situations.

Specifically, in the present embodiment, the first insulating layer 400 completely covers the first substrate layer 110, the first conductive layer 120 and the electrochromic layer 130 corresponding to opposite sidewalls of the first recess 160, so as to form an insulating barrier between the first conductor 200 and the first conductive layer 120 through the first insulating layer 400, so as to avoid the first conductor 200 from contacting the first conductive layer 120.

Example 5

Based on any of the above embodiments, referring to fig. 4, in this embodiment, one side of the first insulating layer 400 away from the second substrate layer 150 extends to cover a portion of the surface of the first substrate layer 110 and is connected with the first substrate layer 110, so that not only the stability of connection between the first insulating layer 400 and the side wall of the first groove 160 can be improved, but also the first insulating layer 400 is prevented from shifting or loosening in the first groove 160 under the action of the pressing force during the lamination process, so that the short circuit condition occurs in the connection between the first conductive layer 120 corresponding to the side wall of the first groove 160 and the first conductor 200, thereby improving the stability and insulation quality of the first insulating layer 400 on the side wall of the first groove 160. In addition, the surface of the partial first substrate layer 110 is covered by the first insulating layer 400, so that a blocking effect is formed on PVB small molecules, the PVB small molecules are prevented from entering the electrochromic membrane through the first groove 160 to react with the electrochromic material layer in a side way, membrane stripping is prevented, and meanwhile, external moisture and oxygen can be prevented from entering the electrochromic membrane, so that the stability and the service life of the electrochromic membrane are improved.

Note that the first insulating layer 400 is a gloss oil layer. Specifically, the varnish layer, i.e., the first insulating layer 400, is formed by respectively dispensing the varnish on opposite sides of the first groove 160 and curing the varnish by baking. The first insulating layer 400 is formed on the side wall of the first groove 160 by means of polishing oil dropping and baking and curing, so that the width of the polishing oil can be effectively controlled in the polishing oil dropping process, the occupied area of the polishing oil in the first groove 160 is reduced, and the connection area between the first conductor and the second conductive layer 140 corresponding to the first groove 160 is ensured.

Example 6

Based on any of the above embodiments, referring to fig. 6, in the present embodiment, two opposite sidewalls of the second groove 170 are provided with the second insulating layer 500, and the second insulating layer 500 at least covers the second conductive layer corresponding to the opposite sidewalls of the second groove 170, so as to form an insulating barrier structure between the second conductor 300 and the sidewalls of the second groove 170 through the second insulating layer 500, thereby preventing the second conductor 300 from being connected to the second conductive layer 140 exposed from the opposite sidewalls of the second groove 170 and the first conductive layer 120 leaking from the bottom of the second groove 170 at the same time, and a short circuit occurs. It is understood that the second insulating layer 500 covers the second conductive layer 140 leaked at the sidewall of the second groove 170, or the second insulating layer 500 covers the second conductive layer 140 and the second substrate layer 150 corresponding to the second groove 170, or the second insulating layer 500 covers the second conductive layer 140, the electrochromic layer 130, or the second insulating layer 500 covers the second substrate layer 150, the second conductive layer 140, and the electrochromic layer 130 corresponding to the second groove 170, which may be specifically set according to practical situations.

Specifically, in the present embodiment, the second insulating layer 500 completely covers the second substrate layer 150, the second conductive layer 140 and the electrochromic layer 130 corresponding to opposite sidewalls of the second recess 170, so as to form an insulating barrier between the second conductor 300 and the second conductive layer 140 through the second insulating layer 500, so as to avoid the second conductor 300 from contacting the second conductive layer 140.

Example 7

Based on any of the above embodiments, referring to fig. 4, in this embodiment, the second insulating layer 500 extends to cover the surface of the portion of the second substrate layer 150 facing away from the first substrate layer 110 and is connected with the second substrate layer 150, so that not only can the stability of connection between the second insulating layer 500 and the side wall of the second groove 170 be improved, but also the situation that the second insulating layer 500 is offset or loose in the second groove 170 under the action of the pressing force in the lamination process, resulting in the short circuit between the second conductive layer 140 corresponding to the side wall of the second groove 170 and the first conductor 200 can be avoided, so as to improve the stability and insulation quality of the second insulating layer 500 on the side wall of the second groove 170. In addition, the surface of the second substrate layer 150 covered by the second insulating layer 500 forms a blocking effect on PVB small molecules, so that PVB small molecules are prevented from entering the electrochromic membrane through the side wall and the top of the second groove 170 to generate side reactions with the electrochromic material layer, membrane stripping is prevented from being prevented, and meanwhile, external moisture and oxygen can be prevented from entering the electrochromic membrane, so that the stability and the service life of the electrochromic membrane are improved.

Wherein the second insulating layer 500 is a gloss oil layer. It should be noted that, the arrangement of the second insulating layer 500 is the same as that of the first insulating layer 400, and will not be described in detail here.

Example 8

Based on any of the above embodiments, referring to fig. 7, in this embodiment, a third insulating layer 600 is disposed on a side of the first groove 160 facing the middle of the electrochromic film 100, and the third insulating layer 600 covers a sidewall of the first groove 160 facing the middle of the electrochromic film 100, so as to form an insulating barrier structure between the first conductor 200 and a side of the first groove 160 facing the middle of the electrochromic film 100, so as to avoid the first conductor 200 contacting the first conductive layer 120 exposed on a side of the first groove 160 facing the middle of the electrochromic film 100, and a short circuit occurs.

Specifically, the third insulating layer 600 completely covers the first substrate layer 110, the first conductive layer 120 and the electrochromic layer 130 correspondingly exposed from the side of the first groove 160 toward the middle of the electrochromic film, so as to form an insulating barrier between the first conductor 200 and the first conductive layer 120 through the third insulating layer 600, so as to avoid the first conductor 200 from contacting the first conductive layer 120.

The third insulating layer 600 extends towards one side of the middle of the electrochromic film 100 to cover a portion of the surface of the first substrate layer 110 and is connected with the first substrate layer 110, so that not only can the situation that the third insulating layer 600 is offset under the action of a pressing force in the lamination process of the electrochromic film, and a short circuit occurs in connection between the first conductor 200 and the first conductive layer 120 exposed from the side wall of the first groove 160, but also the insulation blocking quality of the third insulating layer 600 in the first groove 160 can be improved, and meanwhile, the stability of connection between the third insulating layer 600 and the side wall of the first groove 160 can be effectively ensured. The third insulating layer 600 forms a barrier effect on the PVB small molecules, so that the PVB small molecules are prevented from entering the electrochromic film through the first groove 160 to undergo side reaction with the electrochromic material layer. External moisture and oxygen can be prevented from entering the electrochromic diaphragm, so that the stability and the service life of the electrochromic diaphragm are improved.

Wherein the third insulating layer 600 is a gloss oil layer. It should be noted that, the third insulating layer 600 is disposed in the same manner as the first insulating layer 400, and will not be described in detail herein.

Specifically, the first insulating layer 400 and the third insulating layer 600 are formed on the sidewalls of the first groove 160 by dispensing a circle of varnish on the sidewalls of the first groove 160. Then, silver paste is correspondingly spotted in each first groove 160, and the silver paste is connected with the correspondingly exposed second conductive layer 140 at the first grooves 160 to form a single electrode; and then, continuously dispensing silver paste along the arrangement direction of the first grooves 160, wherein a part of silver paste falls into the first grooves 160 and is connected with the single electrode in the first grooves 160, and the other part of silver paste is connected with the first substrate layer 110 to form a continuous first conductor 200. It can be appreciated that by applying a circle of varnish on the sidewall of the first groove 160 in advance, when silver paste is applied to the first groove 160, the silver paste falling into the first groove 160 contacts the corresponding exposed first conductive layer 120 on the sidewall of the first groove 160, so that an insulation barrier is formed between the sidewall of the first groove 160 and the first conductor 200 by the first insulating layer 400 and the third insulating layer 600, thereby preventing a short circuit.

Example 9

Based on any of the above embodiments, referring to fig. 7, in this embodiment, a fourth insulating layer 700 is disposed on a side of the second groove 170 facing the middle of the electrochromic film 100, and the fourth insulating layer 700 covers a sidewall of the second groove 170 facing the middle of the electrochromic film 100, so as to form an insulating barrier structure between the second conductor 300 and a side of the second groove 170 facing the middle of the electrochromic film 100, so as to avoid the contact between the second conductor 300 and the second conductive layer 140 exposed on a side of the second groove 170 facing the middle of the electrochromic film 100, and a short circuit occurs.

Specifically, the fourth insulating layer 700 completely covers the second substrate layer 150, the second conductive layer 140 and the electrochromic layer 130 correspondingly exposed from the side of the second groove 170 toward the middle of the electrochromic film, so as to form an insulating barrier between the second conductor 300 and the second conductive layer 140 through the fourth insulating layer 700, so as to avoid the second conductor 300 from contacting the second conductive layer 140.

The fourth insulating layer 700 extends towards one side of the middle of the electrochromic film 100 to cover a portion of the surface of the second substrate layer 150 and is connected with the second substrate layer 150, so that not only can the fourth insulating layer 700 be prevented from being offset under the action of a pressing force in the lamination process of the electrochromic film, but also the second conductive layer 140 exposed out of the side wall of the second groove 170 is prevented from being connected with the second conductor 300 to form a short circuit, so that the insulation and blocking quality of the third insulating layer 600 in the second groove 170 is improved, and meanwhile, the stability of the connection between the fourth insulating layer 700 and the side wall of the second groove 170 can be effectively ensured. And a blocking effect is formed on PVB small molecules through the fourth insulating layer, so that PVB small molecules are prevented from entering the electrochromic film through the second groove 170 to generate side reactions with the electrochromic material layer. External moisture and oxygen can be prevented from entering the electrochromic diaphragm, so that the stability and the service life of the electrochromic diaphragm are improved.

The fourth insulating layer 700 is a gloss oil layer. It should be noted that, the arrangement of the fourth insulating layer 700 is the same as that of the first insulating layer 400, and will not be described in detail here.

Specifically, the second insulating layer 500 and the fourth insulating layer 700 are formed on the sidewalls of the second groove 170 by dispensing a circle of varnish on the sidewalls of the second groove 170. Then, silver paste is correspondingly spotted in each second groove 170, and the silver paste is connected with the correspondingly exposed first conductive layer 120 at the second groove 170 to form a single electrode; and then, continuously dispensing silver paste along the arrangement direction of the second grooves 170, wherein a part of silver paste falls into the second grooves 170 and is connected with the single electrode in the second grooves 170, and the other part of silver paste is connected with the second substrate layer 150 to form a continuous second conductor 300. It can be appreciated that by applying a circle of varnish on the sidewall of the second groove 170 in advance, when silver paste is applied to the second groove 170, the silver paste falling into the second groove 170 contacts the second conductive layer 140 exposed corresponding to the sidewall of the second groove 170, so that the second insulating layer 500 and the fourth insulating layer 700 form an insulating barrier between the sidewall of the second groove 170 and the second conductor 300, thereby preventing a short circuit.

Example 10

Based on any of the above embodiments, referring to fig. 4 and 5, in the present embodiment, the first groove 160 is filled with the fifth insulating layer 800, and the fifth insulating layer 800 completely covers the first groove 160, that is, the fifth insulating layer 800 covers the first conductor 200 corresponding to the first groove 160, so that the first conductor 200 corresponding to the first groove 160 is covered by the fifth insulating layer 800, so as to improve the stability of the connection between the first conductor 200 and the second conductive layer 140 corresponding to the first groove 160.

Further, a portion of the fifth insulating layer 800 extends over a portion of the first substrate layer 110 facing away from the second substrate layer 150. That is, the portion of the fifth insulating layer 800 protruding from the first groove 160 is connected to the first substrate layer 110, so as to improve the connection stability of the fifth insulating layer 800 and the electrochromic film, and meanwhile, the fifth insulating layer 800 can play a role in fixing the first conductor 200, so as to ensure the connection stability between the first conductor 200 and the second conductive layer 140 exposed corresponding to the first groove 160. The fifth insulating layer 800 forms a blocking effect on PVB small molecules, and simultaneously can prevent external moisture and oxygen from entering the electrochromic membrane, so that the stability and the service life of the electrochromic membrane are improved.

The fifth insulating layer 800 is a gloss oil layer, specifically, after the first conductor 200 is formed, gloss oil is dispensed in the first groove 160, so that the gloss oil completely fills the first groove 160, and a portion of the gloss oil extends to a side of the first substrate layer 110 facing away from the second substrate layer 150 through capillary action, and is cured to form the gloss oil layer (i.e., the fifth insulating layer 800) through baking.

Example 11

Based on any of the above embodiments, referring to fig. 4 and 5, in the present embodiment, the second groove 170 is filled with the sixth insulating layer 900, and the sixth insulating layer 900 completely covers the second groove 170, that is, the sixth insulating layer 900 covers the second conductor 300 corresponding to the second groove 170, so that the second conductor 300 corresponding to the second groove 170 is covered by the sixth insulating layer 900, so as to improve the stability of the connection between the second conductor 300 and the first conductive layer 120 corresponding to the second groove 170.

Further, a portion of the sixth insulating layer 900 extends over a portion of the second substrate layer 150 facing away from the first substrate layer 110. That is, the portion of the sixth insulating layer 900 protruding from the second groove 170 is connected to the second substrate layer 150, so as to improve the connection stability of the sixth insulating layer 900 and the electrochromic film, and meanwhile, the sixth insulating layer 900 can fix the second conductor 300, so as to ensure the connection stability between the second conductor 300 and the second groove 170 corresponding to the exposed first conductive layer 120. The sixth insulating layer 900 forms a blocking effect on PVB small molecules, and meanwhile, external moisture and oxygen can be prevented from entering the electrochromic membrane, so that the stability and the service life of the electrochromic membrane are improved.

The sixth insulating layer 900 is a gloss oil layer, specifically, after the second conductor 300 is formed, gloss oil is dispensed in the second groove 170, so that the gloss oil completely fills the second groove 170, and a portion of the gloss oil extends to a side of the second substrate layer 150 facing away from the first substrate layer 110 through capillary action, and is cured to form the gloss oil layer (i.e., the sixth insulating layer 900) through baking.

The thickness of the gloss oil is h, the value range of h is 50 mu-d ₁ -300 mu, namely the value of h can be any value from 50 mu to 300 mu, and the value can be specifically set according to practical situations. The thickness of the varnish refers to the thickness of the varnish in the thickness direction of the electrochromic film.

Since the first insulating layer 400, the second insulating layer 500, the third insulating layer 600, the fourth insulating layer 700, the fifth insulating layer 800, and the sixth insulating layer 900 are all gloss oil layers. Therefore, the thicknesses of the first insulating layer 400, the second insulating layer 500, the third insulating layer 600, the fourth insulating layer 700, the fifth insulating layer 800, and the sixth insulating layer 900 are each 50 μ to 300 μ.

Example 12

Based on any one of the above embodiments, in the present embodiment, a side of the first conductor 200 facing away from the second substrate layer 150 is provided with a first high-temperature glue, the first high-temperature glue is disposed along the edge of the second substrate layer 150, the first high-temperature glue covers the first conductor 200, and a side of the first high-temperature glue near the middle of the electrochromic film 100 is connected with the first substrate layer 110, and a side of the first high-temperature glue near the edge of the electrochromic film 100 is connected with the first substrate layer 110, i.e. the stability of the first conductor 200 at the edge of the electrochromic film 100 can be further improved through the first high-temperature glue.

Meanwhile, the first high-temperature glue forms an insulating barrier layer on the surface of the first conductor 200, so that PVB small molecules can be prevented from entering the electrochromic film through the first groove 160 to undergo side reactions with the electrochromic material layer, and meanwhile, external water, dust or other conductive substances are prevented from entering the electrochromic film through the first groove 160.

It should be noted that the first high-temperature glue completely covers the first groove 160, and the first high-temperature glue corresponds to the first insulating layer 400, the third insulating layer 600 and the fifth insulating layer 800 in the above embodiment, so that the first high-temperature glue forms a limiting and fixing effect on the corresponding first conductor 200 at the first groove 160, thereby improving the stability of the connection between the first conductor 200 and the second conductive layer 140 in the first groove 160.

Example 13

Based on any one of the above embodiments, in this embodiment, a second high temperature glue is disposed on a side of the second conductor 300 facing away from the first substrate layer 110, the second high temperature glue is disposed along the edge of the first substrate layer 110, the second high temperature glue covers the second conductor 300, and one side of the second high temperature glue near the middle of the electrochromic film 100 is connected with the second substrate layer 150, and one side of the second high temperature glue near the edge of the electrochromic film 100 is connected with the second substrate layer 150, i.e. the stability of the second conductor 300 at the edge of the electrochromic film 100 can be further improved through the second high temperature glue.

Meanwhile, the second high-temperature glue forms an insulating barrier layer on the surface of the second conductor 300, so that PVB small molecules can be prevented from entering the electrochromic film through the second groove 170 to undergo side reactions with the electrochromic material layer, and meanwhile, external water, dust or other conductive substances are prevented from entering the electrochromic film through the second groove 170, and external water, dust or other conductive substances enter the electrochromic film through the second groove 170.

It should be noted that, the portion of the second high temperature glue corresponding to the second groove 170 completely covers the second groove 170, the second high temperature glue is equivalent to the second insulating layer 500, the fourth insulating layer 700 and the sixth insulating layer 900 described in the above embodiment, so as to improve the stability of the sixth insulating layer 900 in the second groove 170, and thus, the second high temperature glue forms a limiting and fixing effect on the second conductor 300 corresponding to the second groove 170, so as to improve the stability of the connection between the second conductor 300 and the first conductive layer 120 in the second groove 170.

Example 14

Based on any of the above embodiments, referring to fig. 3-1 and 3-2, in this embodiment, in the arrangement direction of the first grooves 160, the value range of d ₃,d₃ of the length of the first grooves 160 is 5mm < d ₂≤100mm,d₃, and may be any value from 5mm to 100mm, which may be specifically set according to practical situations. The range of d ₄,d₄, d ₄≤100mm,d₄, which is the length of the second groove 170, may be any value from 5mm to 100mm in the arrangement direction of the second groove 170, and may be specifically set according to practical situations.

It will be appreciated that the width of the first groove 160 (here, the length of the first groove 160 extending from the edge of the electrochromic film 100 toward the middle of the electrochromic film 100) is greater than the width of the first conductor 200 (here, the length of the first conductor 200 extending from the edge of the electrochromic film 100 toward the middle of the electrochromic film 100), and the width of the second groove 170 (here, the length of the second groove 170 extending from the edge of the electrochromic film 100 toward the middle of the electrochromic film 100) is greater than the width of the second conductor 300 (here, the length of the second conductor 300 extending from the edge of the electrochromic film 100 toward the middle of the electrochromic film 100), so that the first conductor 200 has a gap with the side of the first groove 160 near the electrochromic film 100, preventing the first conductor 200 from being connected to the first conductive layer 120 exposed at the side of the first groove 160 near the electrochromic film 100 in the event of a short circuit.

Meanwhile, the second conductor 300 and the second conductive layer 140 exposed at the side of the second groove 170 close to the electrochromic film 100 have a gap, so that the connection of the second conductor 300 and the second conductive layer 140 exposed at the side of the second groove 170 close to the electrochromic film 100 is prevented from being shorted.

It should be noted that, if the width of the first groove 160 and the width of the second groove 170 are smaller than the width of the first conductor 200 and the width of the second conductor 300, the electrochromic film 100 is still easy to connect the first conductor 200 with the first conductive layer 120 leaked from the first groove 160 and connect the second conductor 300 with the second conductive layer 140 leaked from the second groove 170 during the lamination process, so that a short circuit occurs. Thus, in the present embodiment, the width of the first groove 160 and the width of the second groove 170 are both 3mm.

By controlling the widths of the first groove 160 and the second groove 170, the short circuit at the edge of the electrochromic film 100 can be effectively avoided, the width of the black edge at the edge of the electrochromic film 100 can be reduced, the beauty of the electrochromic film 100 can be ensured, and the area of a visible area can be effectively ensured.

It should be noted that, based on any of the above embodiments, in some embodiments of the present application, the first conductor 200 and the second conductor 300 may be copper foil or conductive silver wire.

Example 15

Based on any of the above embodiments, in the present embodiment, the edge of the electrochromic film 100 is provided with a first extraction structure and a second extraction structure.

Specifically, one end of the first lead-out structure is connected to the first conductor 200 or the second conductive layer 140, and may be electrically connected to the first conductor at the first groove 160, or may be electrically connected to the first conductor at a non-groove. The other end of the first extraction structure is used for being connected with an external power supply. One end of the second lead-out structure is connected to the second conductor 300 or the first conductive layer 120, and may be electrically connected to the second conductor 300 at the second groove 170 or may be electrically connected to the second conductor 300 at a non-groove position. The other end of the second extraction structure is used for being connected with an external power supply. Thereby, not only the difficulty of connection between the first lead-out structure and the first conductor 200 and the difficulty of connection between the second lead-out structure and the second conductor 300 can be reduced, but also the increase in the thickness of the edge of the electrochromic film due to the arrangement of the first lead-out structure and the second lead-out structure can be avoided. The first lead-out structure can be connected with the bus bar in a welding mode, or can be fixedly connected with the bus bar or a corresponding conductor layer through conductive adhesive.

In some embodiments of the present application, the first and second lead-out structures are FPCs, respectively. It should be noted that FPC (Flexible Printed Circuit) is a flexible printed circuit board, which is a flexible printed circuit board made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. The flexible printed circuit has the characteristics of high wiring density, light weight, thin thickness and good flexibility, and is suitable for flexible circuits.

It should be noted that, by simultaneously providing the first extraction structure and the second extraction structure at the edge of the electrochromic film, when the first extraction structure and the second extraction structure are simultaneously electrically connected with an external power source, current can be respectively conducted to the first conductive layer 120 and the second conductive layer 140, and an external electric field is formed between the first conductive layer 120 and the second conductive layer 140, so that the electrochromic layer can generate reversible color change under the action of the external electric field, thereby improving the color changing speed of the electrochromic film.

Example 16

Some embodiments of the present application also provide a color-changing device, including a substrate layer and the electrochromic film 100 of any of the embodiments above laminated with the substrate layer.

Specifically, the substrate layer is a transparent structure, for example, the substrate layer may be transparent glass, a transparent acrylic plate, a transparent PVC plate, or the like. Preferably, the substrate layer is glass, the substrate layer is provided with two layers, and the electrochromic film 100 is further sandwiched between the two substrate layers, an adhesive such as PVB or OCA is arranged before the electrochromic film 100 and the substrate layers, and the peripheral edge of the electrochromic film 100 is sealed by the sealant, and meanwhile, the two substrate layers are connected by the sealant, so that a sealed color changing device is formed. The sealant is a transparent insulating colloid, and can be PVB (Polyvinyl Butyral, polyvinyl alcohol Ding Quanzhi) or OCA (Optically CLEAR ADHESIVE, optical adhesive) for example. The first lead-out structure and the second lead-out structure penetrate out of the sealant and are electrically connected with an external power supply.

In addition, the sealant can form adhesion between two substrate layers and the electrochromic membrane 100, can also play a sealing role in isolating oxygen and air for the electrochromic membrane 100, and can prevent the electrochromic membrane 100 from contacting with external moisture and oxygen so as to prolong the service life of the electrochromic membrane 100 and improve the service life of the color changing device.

In addition, the inner surface or the outer surface of the substrate layer corresponds to the edge portion of the electrochromic film 100 and is provided with a shielding layer, so that in order to prevent a user from directly seeing the edge portion of the electrochromic film 100 through the transparent substrate layer, the edge of the substrate layer is provided with the shielding layer, and the bus bar and the blocking portion at the edge of the electrochromic film 100 are blocked by the shielding layer, so that the aesthetic property of the color changing device is improved. Preferably, the masking layer is provided as an ink layer.

Example 17

Based on any of the above embodiments, some embodiments of the present application further provide an end product comprising the electrochromic film 100 or the color changing device as in any of the above embodiments, wherein the end product comprises any 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. In this embodiment, the electrochromic film 100 or the color-changing device is adopted, so that the full advantages of the color-changing film and the color-changing device are achieved, the width of the shielding layer is reduced, the visible area of the electrochromic device is increased, and the service life of the product is prolonged.

Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The foregoing examples illustrate only a few embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.

Claims

1. An electrochromic film is characterized by comprising a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are stacked;

the electrochromic film is provided with a first groove and a second groove;

2. The electrochromic film of claim 1, wherein the width of the first groove in the direction from edge to center of the electrochromic film is d ₃, wherein d ₃ has a value ranging from 2mm to ₃ mm to 3mm; and/or the width of the second groove in the direction from the edge to the center of the electrochromic film is d ₄, wherein the value range of d ₄ is 2 mm-d ₄ -3 mm.

3. The electrochromic film of claim 1, wherein the first grooves and the second grooves are each a plurality, the first grooves and the second grooves alternating at an edge of the electrochromic film.

4. An electrochromic film according to any one of claims 1 to 3, characterized in that along the direction of arrangement of the first grooves, opposite side walls of the first grooves are provided with first insulating layers covering at least the corresponding first conductive layers of the side walls of the first grooves; and/or the number of the groups of groups,

And second insulating layers are arranged on two opposite side walls of the second groove along the arrangement direction of the second groove, and the second insulating layers at least cover second conductive layers corresponding to the opposite side walls of the second groove.

5. The electrochromic film of claim 4, wherein the first insulating layer extends over a portion of the surface of the first substrate layer; and/or the number of the groups of groups,

The second insulating layer extends over a portion of the surface of the second substrate layer.

6. An electrochromic diaphragm according to any one of claims 1 to 3, characterized in that the side of the first recess facing the middle of the electrochromic diaphragm is provided with a third insulating layer covering the side wall of the first recess facing the middle of the electrochromic diaphragm; and/or the number of the groups of groups,

And one side of the second groove, which faces the middle part of the electrochromic diaphragm, is provided with a fourth insulating layer, and the fourth insulating layer covers the side wall of the second groove, which faces the middle part of the electrochromic diaphragm.

7. The electrochromic film of claim 6, wherein the third insulating layer extends to cover a portion of the first substrate layer surface; and/or the number of the groups of groups,

The fourth insulating layer extends to cover a portion of the surface of the second base layer.

8. The electrochromic film of any one of claims 1-3, wherein the first groove is filled with a fifth insulating layer covering the first conductor corresponding to the first groove, a portion of the fifth insulating layer extending to cover a portion of the first base layer facing away from the second base layer; and/or the number of the groups of groups,

The second groove is filled with a sixth insulating layer, the sixth insulating layer covers the second conductor corresponding to the second groove, and a part of the sixth insulating layer extends to cover a part of the second substrate layer, which is away from the first substrate layer.

9. A color changing device comprising an electrochromic film according to any one of claims 1 to 8.

10. An end product comprising an electrochromic film according to any one of claims 1 to 8 or a color changing device according to claim 9, 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.