CN114089573A

CN114089573A - Electrochromic element, color-changing glass and transparent display screen

Info

Publication number: CN114089573A
Application number: CN202111413469.4A
Authority: CN
Inventors: 蔡缘蓁
Original assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; Yecheng Optoelectronics Wuxi Co Ltd; General Interface Solution Ltd
Current assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-02-25

Abstract

The invention relates to an electrochromic element, color-changing glass and a transparent display screen. The electrochromic element includes: the first substrate assembly comprises a first transparent substrate and a first transparent electrode layer arranged on the first transparent substrate; the second substrate assembly comprises a second transparent substrate and a second transparent electrode layer arranged on the second transparent substrate; an electrochromic layer disposed between the first transparent electrode layer and the second transparent electrode layer; and a first conductive layer including a plurality of first conductive lines arranged on the first transparent electrode layer. Because laid many first conductor wires on the first transparent electrode layer to can be with the quick conduction of electric current to each region of first transparent electrode layer, thereby the electrochemical reaction degree in each region of electrochromic layer is more synchronous, and then makes electrochromic layer discolour more evenly.

Description

Electrochromic element, color-changing glass and transparent display screen

Technical Field

The invention relates to the technical field of electronic devices, in particular to an electrochromic element, color-changing glass and a transparent display screen.

Background

Electrochromism means that under the action of an applied voltage or current, the optical performance (such as light transmittance, light reflectance or light absorbance) of the electrochromic layer in a visible light wave range can generate stable reversible change, so that the change of color and transparency can be shown. Electrochromic technology can be applied to a variety of products, such as energy saving windows, automotive glass, automotive rearview mirrors or display screens, and the like.

However, the traditional electrochromic element has the defect of nonuniform color change, and the defect is particularly obvious for products with large color change areas.

Disclosure of Invention

Therefore, it is necessary to provide an electrochromic device, a color-changing glass, and a transparent display panel, which can improve the above-mentioned defects, in order to solve the problems of slow color-changing reaction speed and non-uniform color-changing of the electrochromic device in the prior art.

An electrochromic element comprising:

the first substrate assembly comprises a first transparent substrate and a first transparent electrode layer arranged on the first transparent substrate;

the second substrate assembly comprises a second transparent substrate and a second transparent electrode layer arranged on the second transparent substrate;

an electrochromic layer disposed between the first transparent electrode layer and the second transparent electrode layer; and

a first conductive layer including a plurality of first conductive lines arranged on the first transparent electrode layer.

In one embodiment, the plurality of first conductive lines of the first conductive layer are disposed on a side of the first transparent electrode layer facing the electrochromic layer.

In one embodiment, the plurality of first conductive lines are arranged in a criss-cross manner.

In one embodiment, the first conductive line is a metal conductive line and has a line width less than or equal to 10 μm.

In one embodiment, the electrochromic element further comprises a second conductive layer comprising a plurality of second conductive lines disposed on the second transparent electrode layer.

In one embodiment, the plurality of second conductive lines of the second conductive layer are disposed on a side of the second transparent electrode layer facing the electrochromic layer.

In one embodiment, the second conductive lines are arranged in a criss-cross manner.

In one embodiment, the second conductive line is a metal conductive line and has a line width less than or equal to 10 μm.

A color-changing glass, comprising a glass plate and the electrochromic element as described in any of the above embodiments, wherein the first transparent substrate or the second transparent substrate of the electrochromic element is attached to the glass plate.

A transparent display screen comprises a transparent display layer and the electrochromic element in any embodiment, wherein the first transparent substrate or the second transparent substrate of the electrochromic element is attached to the transparent display layer.

According to the electrochromic element, the color-changing glass and the transparent display screen, when the first transparent electrode layer and the second transparent electrode layer are powered on, the electrochromic layer between the first transparent electrode layer and the second transparent electrode layer generates electrochemical reaction under the action of an electric field, so that color changing is realized. Because laid many first conductor wires on the first transparent electrode layer to can be with the quick conduction of electric current to each region of first transparent electrode layer, thereby the electrochemical reaction degree in each region of electrochromic layer is more synchronous, and then makes electrochromic layer discolour more evenly.

Drawings

FIG. 1 is a cross-sectional view of an electrochromic device in accordance with one embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first transparent electrode layer and a first conductive line of the electrochromic device shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a second transparent electrode layer and a second conductive line of the electrochromic device shown in FIG. 1;

fig. 4 to 5 are process illustrations of a first substrate assembly manufacturing step in a method of manufacturing an electrochromic device according to an embodiment of the invention;

fig. 6 to 9 are process illustrations of a second substrate assembly manufacturing step in the method for manufacturing an electrochromic device according to an embodiment of the invention;

FIG. 10 is a cross-sectional view of a color-changing glass in accordance with an embodiment of the present invention;

FIG. 11 is a cross-sectional view of a transparent display in an embodiment of the invention.

Reference numerals: 100. an electrochromic element; 10. a first substrate assembly; 11. a first transparent substrate; 12. a first transparent electrode layer; 121. a first sub transparent electrode; 20. a second substrate assembly; 21. a second transparent substrate; 22. a second transparent electrode layer; 221. a second sub transparent electrode; 30. an electrochromic layer; 40. a first conductive layer; 41. a first conductive line; 40a, a first metal layer; 50. a second conductive layer; 51. a second conductive line; 50a, a second metal layer; 60. a transparent display layer; 70. a glass plate; 80. and (3) optical cement.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Under the action of an external voltage or current, the electrochromic material undergoes an oxidation-reduction reaction, so that electrons are lost, the energy level of the material is changed, and the color is changed. The inventors found that the factor causing the color unevenness is mainly that the electrochemical reactions of the electrochromic materials of the respective regions are not synchronized. Furthermore, the inventors have found that the main reason for the asynchronous electrochemical reaction of the electrochromic material in each region is that the resistance of the transparent electrode layer is high, the current of the power source is transferred to the electrochromic material through the transparent electrode layer, and a voltage drop is liable to occur, and the voltage drop of the transparent electrode layer gradually increases from a portion close to the current input end to a portion far from the current input end. Therefore, the degree of hysteresis of the electrochemical reaction gradually increases from the region of the current input terminal close to the transparent electrode layer to the region of the current input terminal far from the transparent conductive layer, resulting in uneven discoloration.

In order to solve the defect of nonuniform color change of the electrochromic element, in the embodiment of the invention, a plurality of conductive wires are distributed on the transparent electrode layer, and the plurality of conductive wires are utilized to rapidly conduct current to each area on the transparent electrode layer, so that the electrochemical reaction of each area is more synchronous, and the uniform color change effect is further achieved.

Referring to fig. 1, fig. 1 shows a cross-sectional view of an electrochromic device 100 according to an embodiment of the present invention, and an embodiment of the present invention provides an electrochromic device 100 including a first substrate assembly 10, a second substrate assembly 20, an electrochromic layer 30, and a first conductive layer 40.

The first substrate assembly 10 includes a first transparent substrate 11 and a first transparent electrode layer 12 disposed on the first transparent substrate 11. The second substrate assembly 20 includes a second transparent substrate 21 and a second transparent electrode layer 22 disposed on the second transparent substrate 21. The electrochromic layer 30 is disposed between the first transparent electrode layer 12 and the second transparent electrode layer 22. The first conductive layer 40 includes a plurality of first conductive lines 41 arranged on the first transparent electrode layer 12. Alternatively, both the first transparent electrode layer 12 and the second transparent electrode layer 22 may be made of a transparent conductive material such as ITO (indium tin oxide).

In this way, when the first transparent electrode layer 12 and the second transparent electrode layer 22 are powered on, the electrochromic layer 30 located between the first transparent electrode layer 12 and the second transparent electrode layer 22 undergoes an electrochemical reaction under the action of an electric field, thereby realizing color change. Because lay many first conductive wires 41 on the first transparent electrode layer 12 to can be with the quick conduction of electric current to each region of first transparent electrode layer 12, thereby the electrochemical reaction degree in each region of electrochromic layer 30 is more synchronous, and then makes electrochromic layer 30 change colour more evenly.

It should be noted that color change herein is understood to mean a change in color of the electrochromic layer 30 and/or a change in light transmittance of the electrochromic layer 30 (i.e., switching between a transparent state and an opaque state).

In specific embodiments, the plurality of first conductive lines 41 of the first conductive layer 40 are disposed on the side of the first transparent electrode layer 12 facing the electrochromic layer 30. Therefore, on one hand, each first conductive wire 41 is directly contacted with the electrochromic layer 30, and can directly conduct current to the electrochromic layer 30, so that the electrochromic layer 30 can rapidly generate electrochemical reaction, and the color change speed is improved; on the other hand, since the electrochromic layer 30 is generally formed by a coating process, the first conductive line 41 is disposed on a side of the first transparent electrode layer 12 facing the electrochromic layer 30, so that the first conductive line 41 is embedded in the electrochromic layer 30 when the electrochromic layer 30 is formed by coating, which is beneficial to increasing structural stability.

It should be noted that, in other embodiments, the first conductive line 41 of the first conductive layer 40 may also be disposed on the side of the first transparent electrode layer 12 facing the first transparent substrate 11. Of course, the first conductive lines 41 may be disposed on both sides of the first transparent electrode layer 12, as long as the current can be rapidly conducted to each region of the first transparent electrode layer 12, which is not limited herein.

Referring to fig. 2, in the embodiment, the first conductive lines 41 of the first conductive layer 40 are criss-cross arranged, that is, the first conductive lines 41 are arranged on the first transparent electrode layer 12 in a mesh structure, so as to ensure that the current is rapidly conducted to each region of the first transparent electrode layer 12, and further, the color of the electrochromic layer 30 is uniform. More specifically, portions of the plurality of first conductive lines 41 of the first conductive layer 40 are arranged on the first transparent electrode layer 12 at intervals along the first direction, and are all parallel to the second direction; the remaining portions of the first conductive lines 41 of the first conductive layer 40 are spaced apart along the second direction on the first transparent electrode layer 12, and are parallel to the first direction. The first direction and the second direction are perpendicular to each other and are parallel to the plane of the first transparent electrode layer 12. Specifically, in the embodiment shown in fig. 2, the first direction is an up-down direction, and the second direction is a left-right direction.

It should be noted that the plurality of first conductive lines 41 of the first conductive layer 40 are not limited to be arranged in the criss-cross manner, and in other embodiments, the plurality of first conductive lines 41 of the first conductive layer 40 are arranged at intervals along the first direction and are all parallel to the second direction. The first direction and the second direction are perpendicular to each other and are both parallel to the plane of the first transparent electrode layer 12. Of course, the plurality of first conductive lines 41 of the first conductive layer 40 may also be disposed on the first transparent electrode layer 12 in other regular or irregular arrangement manners, as long as the current can be rapidly conducted to each region of the first transparent electrode layer 12, so that the electrochromic layer 30 changes color uniformly, which is not limited herein.

In specific embodiments, the first conductive line 41 is a metal conductive line, and the line width is less than or equal to 10 μm. Thus, the resistivity of the metal conductive lines is low, so that the first conductive lines 41 can rapidly transmit current to the regions of the first transparent electrode layer 12, and the voltage drop is small. Since the metal conductive line can block light from passing through and affect the light transmittance of the electrochromic element 100, the width of the metal conductive line is set to be less than or equal to 10 micrometers, so that the influence on the light transmittance is reduced as much as possible. Alternatively, the material of the first conductive line 41 may be a conductive metal such as copper or silver.

In the embodiment, the surface of the first conductive line 41 has a first blackened layer, which is used to reduce the reflectivity, thereby reducing the visibility of the first conductive line 41. Optionally, the first conductive line 41 is subjected to a blackening treatment, so that a first blackening layer is formed on the surface of the first conductive line 41. The blackening treatment may be performed by forming an oxide film (i.e., a first blackening layer) on the surface of the first conductive line 41 by using a chemical solution, for example, the material of the first conductive line 41 is copper, and a layer of copper oxide (black) is formed on the first conductive line 41 after the blackening treatment. Of course, in other embodiments, the blackening process may also be to plate a black metal layer (i.e., a first blackening layer) on the surface of the first conductive line 41, which is not limited herein.

Alternatively, when the first conductive layer 40 is formed, a first metal layer is first formed on the first transparent electrode layer 12. Then, the first metal layer is etched to form a plurality of first conductive lines 41. In another embodiment, when forming the first conductive layer 40, a photoresist type conductive silver paste layer is first formed on the first transparent electrode layer 12. Then, the photoresist type conductive silver paste layer is exposed and developed to form a plurality of first conductive lines 41.

In an embodiment, the first transparent electrode layer 12 is patterned to form a plurality of first sub-transparent electrodes 121, and each of the first sub-transparent electrodes 121 is electrically connected to a power supply, so that the first transparent electrode layer 12 with a larger area is divided into a plurality of first sub-transparent electrodes 121 with a smaller area at intervals, which is beneficial to reducing voltage drop and further enabling the electrochromic layer 30 to change color uniformly.

Referring to fig. 1, in the embodiment of the invention, the electrochromic device 100 further includes a second conductive layer 50, and the second conductive layer 50 includes a plurality of second conductive wires 51 disposed on the second transparent electrode layer 22. In this way, when the first transparent electrode layer 12 and the second transparent electrode layer 22 are powered on, the electrochromic layer 30 located between the first transparent electrode layer 12 and the second transparent electrode layer 22 is subjected to an electrochemical reaction under the action of an electric field, so that the color change is realized. Because lay many first conductor wires 41 on the first transparent electrode layer 12 to can be with the quick conduction of electric current to each region of first transparent electrode layer 12, lay many second conductor wires 51 on the second transparent electrode layer 22, thereby can be with the quick conduction of electric current to each region of second transparent electrode layer 22, further make the electrochemical reaction degree in each region of electrochromic layer 30 more synchronous, and then make electrochromic layer 30 change colour more evenly.

In specific embodiments, the plurality of second conductive lines 51 of the second conductive layer 50 are disposed on a side of the second transparent electrode layer 22 facing the electrochromic layer 30. Therefore, on one hand, each second conductive wire 51 is directly contacted with the electrochromic layer 30, and the current can be directly conducted to the electrochromic layer 30, so that the electrochromic layer 30 can rapidly generate electrochemical reaction, and the color change speed is improved; on the other hand, since the electrochromic layer 30 is generally formed by a coating process, the second conductive lines 51 are disposed on a side of the second transparent electrode layer 22 facing the electrochromic layer 30, so that the second conductive lines 51 are embedded in the electrochromic layer 30 when the electrochromic layer 30 is formed by coating, which is beneficial to increasing structural stability.

It should be noted that, in other embodiments, the second conductive line 51 of the second conductive layer 50 may also be disposed on the side of the second transparent electrode layer 22 facing the second transparent substrate 21. Of course, the second conductive lines 51 may be disposed on both sides of the second transparent electrode layer 22, and are not limited herein, as long as the current can be rapidly conducted to each region of the second transparent electrode layer 22.

Referring to fig. 3, in the embodiment, the second conductive lines 51 of the second conductive layer 50 are criss-cross arranged, that is, the second conductive lines 51 are arranged on the second transparent electrode layer 22 in a mesh structure, so as to ensure that the current is rapidly conducted to each region of the second transparent electrode layer 22, and further, the color of the electrochromic layer 30 is uniform. More specifically, portions of the plurality of second conductive lines 51 of the second conductive layer 50 are arranged on the second transparent electrode layer 22 at intervals along the first direction, and are all parallel to the second direction; the remaining portions of the second conductive lines 51 of the second conductive layer 50 are spaced apart from each other along the second direction and are parallel to the first direction on the second transparent electrode layer 22. The first direction and the second direction are perpendicular to each other and are parallel to the plane of the second transparent electrode layer 22. Specifically, in the embodiment shown in fig. 3, the first direction is an up-down direction and the second direction is a left-right direction.

It should be noted that the plurality of second conductive lines 51 of the second conductive layer 50 are not limited to be arranged in the criss-cross manner, and in other embodiments, the plurality of second conductive lines 51 of the second conductive layer 50 are arranged at intervals along the first direction and are all parallel to the second direction. The first direction and the second direction are perpendicular to each other and are both parallel to the plane of the second transparent electrode layer 22. Of course, the second conductive lines 51 of the second conductive layer 50 may also be arranged on the second transparent electrode layer 22 in other regular or irregular arrangement manners, as long as the current can be rapidly conducted to each region of the second transparent electrode layer 22, so that the electrochromic layer 30 changes color uniformly, which is not limited herein.

In specific embodiments, the second conductive lines 51 are metal conductive lines and have a line width less than or equal to 10 μm. Thus, the resistivity of the metal conductive lines is low, so that the second conductive lines 51 can rapidly transmit current to the regions of the second transparent electrode layer 22, and the voltage drop is small. Since the metal conductive line can block light from passing through and affect the light transmittance of the electrochromic element 100, the width of the metal conductive line is set to be less than or equal to 10 micrometers, so that the influence on the light transmittance is reduced as much as possible. Alternatively, the material of the second conductive line 51 may be a conductive metal such as copper or silver.

In the embodiment, the surface of the second conductive line 51 has a second blackened layer, which is used to reduce the reflectivity, thereby reducing the visibility of the second conductive line 51. Alternatively, the second conductive line 51 is subjected to a blackening process, so that a second blackening layer is formed on the surface of the second conductive line 51. The blackening treatment may be performed by forming an oxide film (i.e., a second blackening layer) on the surface of the second conductive line 51 by using a chemical solution, for example, the second conductive line 51 is made of copper, and a layer of copper oxide (black) is formed on the second conductive line 51 after the blackening treatment. Of course, in other embodiments, the blackening process may also be to plate a black metal layer (i.e., a second blackening layer) on the surface of the second conductive line 51, which is not limited herein.

Alternatively, when forming the second conductive layer 50, a second metal layer is first formed on the second transparent electrode layer 22. Then, the second metal layer is etched to form a plurality of second conductive lines 51. In another embodiment, when forming the second conductive layer 50, a photoresist type conductive silver paste layer is first formed on the second transparent electrode layer 22. Then, the photoresist type conductive silver paste layer is exposed and developed to form a plurality of second conductive lines 51.

Specifically, in the embodiment, the second transparent electrode layer 22 forms a plurality of second sub-transparent electrodes 221 through patterning, and each second sub-transparent electrode 221 is electrically connected to the power supply, so that the second transparent electrode layer 22 with a larger area is divided into a plurality of second sub-transparent electrodes 221 with a smaller area, which is beneficial to reducing the voltage drop and further enabling the electrochromic layer 30 to change color uniformly.

For better understanding of the present invention, the following description is provided for the preparation method of the electrochromic device 100 of the present invention, which is only an embodiment and should not be construed as limiting the scope of the invention. The method for manufacturing the electrochromic device 100 includes the steps of manufacturing the first substrate assembly 10, manufacturing the second substrate assembly 20, and combining the first substrate assembly and the second substrate assembly.

Referring to fig. 4 and 5, the first substrate assembly 10 is prepared by the following steps: first, the first transparent electrode layer 12 is formed on the first transparent substrate 11. Then, a first metal layer 40a is formed on the first transparent electrode layer 12. Then, the first metal layer 40a is patterned by etching to form a plurality of first conductive lines 41 of the first conductive layer 40. Further, in the step of patterning the first metal layer 40a by etching, the first transparent electrode layer 12 may be simultaneously patterned to divide the first transparent electrode layer 12 into a plurality of first sub-transparent electrodes 121.

Referring to fig. 6 to 9, the second substrate assembly 20 is prepared by the following steps: first, the second transparent electrode layer 22 is formed on the second transparent substrate 21. Then, a second metal layer 50a is formed on the second transparent electrode layer 22. Then, the second metal layer 50a is patterned by etching to form a plurality of second conductive lines 51 of the second conductive layer 50. Then, the electrochromic layer 30 is formed on the first transparent electrode layer 12 by coating. Then, the second transparent electrode layer 22 is patterned by laser etching to divide the second transparent electrode layer 22 into a plurality of second sub-transparent electrodes 221. Further, the electrochromic layer 30 may also be simultaneously patterned in the step of patterning the second transparent electrode layer 22.

The combination steps include: the side of the first substrate assembly 10 having the first transparent electrode layer 12 is attached to the side of the electrochromic layer 30 facing away from the second conductive layer 50.

Referring to fig. 10, based on the electrochromic device 100, the present invention further provides a color-changing glass 102, where the color-changing glass 102 includes a glass plate 70 and the electrochromic device 100 as described in any of the above embodiments. The first transparent substrate 11 or the second transparent substrate 21 of the electrochromic element 100 is bonded to the glass plate 70. In this manner, the color-changing glass 102 has a color-changing function by the color-changing function of the electrochromic layer 30 of the electrochromic element 100. Specifically, the color-changing glass 102 may be applied to, but not limited to, automobile windows, automobile rearview mirrors, building windows, and the like.

Further, the first transparent substrate 11 or the second transparent substrate 21 of the electrochromic element 100 and the glass plate 70 are bonded using the optical glue 80.

Based on the electrochromic element 100, the present invention further provides a transparent display 101, where the transparent display 101 includes a transparent display layer 60 and the electrochromic element 100 as described in any of the above embodiments, and the first transparent substrate 11 or the second transparent substrate 21 of the electrochromic element 100 is attached to the transparent display layer 60. The transparent display layer 60 is used to display a screen. As such, the transparent display 101 has a function of changing light transmittance by the color changing function of the electrochromic layer 30 of the electrochromic element 100.

Further, the first transparent substrate 11 or the second transparent substrate 21 of the electrochromic element 100 and the transparent display screen 101 are bonded by using the optical glue 80.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electrochromic element, characterized by comprising:

a first substrate assembly (10) comprising a first transparent substrate (11) and a first transparent electrode layer (12) disposed on the first transparent substrate (11);

a second substrate assembly (20) comprising a second transparent substrate (21) and a second transparent electrode layer (22) disposed on the second transparent substrate (21);

an electrochromic layer (30) disposed between the first transparent electrode layer (12) and the second transparent electrode layer (22); and

a first conductive layer (40) comprising a plurality of first conductive lines (41) arranged on the first transparent electrode layer (12).

2. Electrochromic element according to claim 1, characterized in that the plurality of first electrically conductive lines (41) of the first electrically conductive layer (40) is arranged on the side of the first transparent electrode layer (12) facing the electrochromic layer (30).

3. Electrochromic element according to claim 1, characterized in that the plurality of first electrically conductive lines (41) are laid criss-crossed.

4. Electrochromic element according to claim 1, characterized in that the first electrically conductive lines (41) are metallic electrically conductive lines and have a line width of less than or equal to 10 μm.

5. Electrochromic element according to one of claims 1 to 4, characterized in that the electrochromic element (100) further comprises a second electrically conductive layer (50), which second electrically conductive layer (50) comprises a plurality of second electrically conductive lines (51) arranged on the second transparent electrode layer (22).

6. Electrochromic element according to claim 5, characterized in that the plurality of second electrically conductive lines (51) of the second electrically conductive layer (50) is arranged on the side of the second transparent electrode layer (22) facing the electrochromic layer (30).

7. Electrochromic element according to claim 5, characterized in that the second plurality of electrically conductive lines (51) are laid criss-crossed.

8. The electrochromic element according to claim 5, wherein the second conductive line (51) is a metal conductive line and has a line width of 10 μm or less.

9. A color-changing glass comprising a glass plate (70) and an electrochromic element (100) according to any one of claims 1 to 8, wherein the first transparent substrate (11) or the second transparent substrate (21) of the electrochromic element (100) is bonded to the glass plate (70).

10. A transparent display screen, comprising a transparent display layer (60) and an electrochromic element (100) according to any one of claims 1 to 8, wherein the first transparent substrate (11) or the second transparent substrate (21) of the electrochromic element (100) is attached to the transparent display layer (60).