CN108681174A - Electrochromic device, housing, and electronic apparatus - Google Patents

Abstract

The invention discloses an electrochromic device, a shell and electronic equipment. The electrochromic device includes: a first electrode layer and a second electrode layer; an electrochromic functional layer located between the first electrode layer and the second electrode layer; the circuit is electrically connected with the first electrode layer and/or the second electrode layer and is provided with a plurality of transparent leads arranged at intervals, the transparent leads are respectively connected to the first electrode layer and/or the second electrode layer, so that a plurality of areas between the first electrode layer and the second electrode layer have different voltage drops, a voltage input port is arranged in the middle of the circuit, and the electrochromic functional layer presents different colors in the areas due to the different voltage drops. The electrochromic device can simultaneously display various colors and realize symmetrical color change.

Description

Electrochromic devices, casings, electronic equipment

technical field

The invention relates to the field of preparation of electronic equipment components, in particular to an electrochromic device, a casing and an electronic equipment.

Background technique

In order to enhance the appearance of the electronic device, the color of the casing of the electronic device is designed to be colorful. However, the color of the casing of the existing electronic equipment is fixed.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

The present invention is accomplished based on the following findings of the inventors:

At present, the appearance of the housing of the electronic equipment cannot meet the needs of users. The inventors found that this is mainly due to the relatively single color of the housing of the current electronic equipment, so it is difficult to meet the increasing demands of users. Specifically, for the current glass housing, the color of the surface facing the user is usually formed by a printing process, and for the current metal housing, the color of the surface facing the user is usually formed by a masking oxidation process Yes, that is to say, at present, after the shell of the electronic device is manufactured, the color is fixed and cannot be changed again, and the color effect of the product is relatively single. In addition, the inventors also found that the color of the electrochromic material can change with the magnitude and direction of the voltage, and the electrochromic material is applied to the casing of the electronic device, and the casing can present different colors under different voltages. Therefore, after the shell is manufactured, its color can change with the voltage. However, the inventor found through in-depth research that although the above shell can realize the color change, after a certain voltage is applied to the shell through the control circuit, the electro-induced The color-changing material can only present one color, that is to say, the above-mentioned casing cannot display multiple colors at the same time, therefore, its color is still relatively single, which is difficult to meet the user's demand for personalized appearance of the electronic device, and affects the user experience.

In view of this, in one aspect of the present invention, the present invention provides an electrochromic device. The electrochromic device includes: a first electrode layer and a second electrode layer; an electrochromic functional layer, the electrochromic functional layer is located between the first electrode layer and the second electrode layer; a circuit, the The circuit is electrically connected to the first electrode layer and/or the second electrode layer, the circuit has a plurality of transparent leads arranged at intervals, and the plurality of transparent leads are respectively connected to the first electrode layer and/or the second electrode layer or the second electrode layer, so that a plurality of regions between the first electrode layer and the second electrode layer have different voltage drops, and the middle part of the circuit has a voltage input port, wherein the electric The color-changing functional layer presents different colors in the multiple regions due to different voltage drops. Thus, there can be multiple and symmetrical regions with different voltages between the two electrode layers in the electrochromic device. When a certain voltage is applied to the electrochromic device, the electrochromic device can simultaneously display A variety of colors can realize symmetrical discoloration, which enriches the appearance effect of the casing to which the electrochromic device is applied.

In another aspect of the invention, the invention proposes a housing. According to an embodiment of the present invention, the casing includes: a casing substrate and at least one electrochromic device as described above, and the electrochromic device is arranged on the casing substrate. Therefore, the housing has all the features and advantages of the aforementioned electrochromic device, which will not be repeated here. In general, the shell can display multiple colors at the same time and realize symmetrical color change, which has a cool and individual appearance.

In another aspect of the invention, the invention proposes an electronic device. According to an embodiment of the present invention, the electronic device includes the above-mentioned casing, thus, the electronic device has all the features and advantages of the above-mentioned casing, which will not be repeated here. In general, the electronic device has an appearance that can simultaneously present different colors and realize symmetrical color change, thereby improving user experience.

Description of drawings

Fig. 1 has shown the structural representation of electrochromic device according to an embodiment of the present invention;

Figure 2 shows a top view of the partial structure of an electrochromic device according to an embodiment of the present invention;

Figure 3 shows a schematic structural view of an electrochromic device according to an embodiment of the present invention;

Figure 4 shows a schematic structural view of an electrochromic device according to another embodiment of the present invention;

Figure 5 shows a top view of the partial structure of an electrochromic device according to an embodiment of the present invention;

Figure 6 shows a schematic structural view of an electrochromic device according to an embodiment of the present invention; and

Fig. 7 shows a schematic structural diagram of a casing according to an embodiment of the present invention.

Reference signs:

100: first substrate; 200: first electrode layer; 300: electrochromic functional layer; 310: electrochromic layer; 320: electrolyte layer; 330: ion storage layer; 400: second electrode layer; 500: second Substrate; 600: circuit; 700: optical adhesive layer; 800: release film layer; 10: transparent lead; 20: control circuit; 30: voltage input port; 1000: electrochromic device; 2000: housing substrate; 3000: Pattern diaphragm; 3100: texture printing layer; 3200: optical coating layer; 3300: ink layer.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In one aspect of the invention, the invention proposes an electrochromic device. According to an embodiment of the present invention, referring to FIG. 1 and FIG. 2 , the electrochromic device 1000 includes: a first electrode layer 200 , an electrochromic functional layer 300 , a second electrode layer 400 and a circuit 600 . Wherein, the electrochromic functional layer 300 is located between the first electrode layer 200 and the second electrode layer 400, the circuit 600 is electrically connected to the first electrode layer 200 and/or the second electrode layer 400, and the circuit 600 has a plurality of The transparent leads 10 are respectively connected to the first electrode layer 200 and/or the second electrode layer 400, so that multiple regions between the first electrode layer 200 and the second electrode layer 400 have different voltage drops, and the electrochromic functional layer 300 shows different colors in multiple areas due to different voltage drops, and the middle part of circuit 600 (the position at point C as shown in FIG. 2 ) has a voltage input port 30 . Thus, there can be multiple and symmetrical regions with different voltages between the two electrode layers in the electrochromic device. When a certain voltage is applied to the electrochromic device, the electrochromic device can simultaneously display A variety of colors can realize symmetrical discoloration, which enriches the appearance effect of the casing to which the electrochromic device is applied.

For ease of understanding, the electrochromic device according to the embodiment of the present invention will be briefly described below:

As mentioned above, the existing housings of electronic equipment have a single color, which is difficult to meet the needs of users. Specifically, the color presented by the casing of an existing electronic device is usually formed by a printing process or an oxidation process. After the casing is manufactured, its color is fixed and cannot be changed. In addition, although the color of the existing electrochromic casing can be changed, it can only present one color under a certain voltage, and cannot display multiple colors at the same time, resulting in the color of the existing electrochromic casing Single, still can not meet the needs of users.

According to the embodiment of the present invention, by designing the resistance of the circuit in the electrochromic device and the position of the voltage input port of the circuit, the circuit is bounded by the voltage input port to have a certain voltage drop along its length direction, so that When a fixed value of voltage is applied in the middle of the circuit 600, the actual voltages at the multiple transparent leads 10 placed at different positions in the circuit are different, and the voltage actually applied to the multiple transparent leads 10 is the voltage input port of the circuit 600 30 is a symmetrical distribution. Thus, when a plurality of transparent leads 10 are connected to different positions of the same electrode layer, the voltages applied to different regions of the electrode layer can be different, and the voltage applied to the electrode layer is also equal to the voltage input port 30 of the circuit 600. The boundary is symmetrically distributed, so that there are multiple and symmetrical regions with different voltages between the two electrode layers, that is, the first electrode layer 200 and the second electrode layer 400 are divided into multiple and symmetrical regions with different electric fields. distribution area. At this time, if an electrochromic material that can have different colors under different voltages is selected, different regions of the electrochromic device can have different colors and be symmetrically distributed: for example, according to a specific embodiment of the present invention, the electrochromic The photochromic polymer can show red at -0.1V, yellow at 0.4V, green at 0.8V, and blue at 1.2V, so it can be used in different regions The color-changing material presents multiple colors such as green and yellow at the same time, and because the voltage between the two electrode layers is symmetrically distributed, the color presented by the electrochromic material is also a symmetrical color. Therefore, after a certain voltage is applied to the electrochromic device, due to the difference in resistance of each segment of the circuit and the symmetrical distribution of the resistance of the circuit, the voltage applied to each area of the electrode layer is different and symmetrically distributed, thereby making the two electrodes There are multiple and symmetrical regions with different voltages between the layers, and the electrochromic material corresponding to the above-mentioned different voltage regions will show the color under the corresponding voltage, so that the electrochromic device can not only display multiple colors at the same time, but also realize symmetrical color change. , to enrich the appearance effect of the casing to which the electrochromic device is applied.

According to specific embodiments of the present invention, each structure of the electrochromic device will be described in detail below:

According to an embodiment of the present invention, the circuit 600 is formed of a transparent conductive material, specifically, it may be formed of at least one of indium tin oxide, indium zinc oxide, indium tin zinc oxide, and nano-silver, and the resistance of the circuit 600 can be Calculated according to formula (1):

Wherein, L is the length of the circuit 600 (as shown in Figure 2), W is the width of the circuit 600 (as shown in Figure 2), and R is the _square resistance _of the circuit 600, and R can be calculated according to formula (2) :

Wherein, ρ is the resistivity of the circuit material (for example, ITO), and D is the thickness of the circuit 600 . According to an embodiment of the present invention, at least one of the first electrode layer 200 and the second electrode layer 400 is formed of a transparent conductive material (for example, indium tin oxide), and the first electrode layer 200 and the second electrode layer formed of a transparent conductive material The square resistance of the two electrode layers 400 can be calculated according to the formula (2), and D in the formula (2) is the thickness of the first electrode layer 200 and the second electrode layer 400 .

According to an embodiment of the present invention, the thickness of the circuit 600 is smaller than the thickness of the first electrode layer 200 and the second electrode layer 400 formed by transparent conductive materials. According to formula (2), it can be seen that the square resistance of the circuit 600 is greater than that formed by transparent conductive materials. The square resistance of the first electrode layer 200 and the second electrode layer 400. According to the embodiment of the present invention, by designing the thicknesses of the circuit 600 and the first electrode layer 200 and the second electrode layer 400 formed of transparent conductive materials, the square resistance of the circuit 600 is much larger than that of the first electrode layer formed of transparent conductive materials. The square resistance of the electrode layer 200 and the second electrode layer 400, thus, the influence of the resistance of the electrode layer formed by the transparent conductive material on the voltage of the electrochromic device can be ignored, and the voltage of the electrochromic device is mainly affected by the circuit resistance . According to an embodiment of the present invention, since the resistivity of the above-mentioned transparent conductive material (for example, indium tin oxide) is larger than that of a conventional metal conductor, when the length of the circuit is long enough, as L/ in the above formula (1) As the value of W changes, the value of resistance R of the circuit 600 will also change significantly. Therefore, according to the formula (1), the width W and length L of the circuit 600 are designed so that positions with different L values in the circuit 600 have different resistances, that is, the resistances of each section of the entire circuit 600 are different, and the circuit 600 passes through multiple transparent The lead wire 10 connects the electrode layers (including the first electrode layer 200 and the second electrode layer 400 ), so that the voltage drop applied to the electrode layers is relatively large. According to the embodiment of the present invention, the plurality of transparent leads 10 connecting the circuit 600 and the electrode layer are not all drawn from a point with the same L value in the circuit 600, so the actual voltage values at different transparent leads 10 are not equal, and then can be The voltages actually applied to different regions of the electrode layer are different, and the electrochromic material corresponding to the different voltage regions of the electrode layer will display the color under the corresponding voltage, so that the electrochromic device can display multiple colors at the same time.

According to an embodiment of the present invention, referring to FIG. 2 , the middle portion of the circuit 600 (the midpoint C in the length direction L shown in FIG. 2 ) has a voltage input port 30 . When a voltage is applied to the circuit 600 from the voltage input port 30, since the circuit 600 is electrically connected to the first electrode layer 200 through a plurality of transparent leads 10, the first electrode layer 200 is divided into two parts by the dotted line where the point C is located. , and the above two parts are connected in parallel, that is to say, the voltage actually applied to the above two parts of the first electrode layer 200 is the voltage applied by the external circuit. According to an embodiment of the present invention, the circuit 600 is divided into two parts with point C as a symmetrical point, and the resistance of each segment of the above two parts can be calculated according to the formula (1) using the width of the circuit 600 and the length of each segment, wherein, The length of the longest section of the above two parts is L/2 (as shown in Figure 2), thus, the resistances of the above two parts of the circuit gradually increase from point C along the direction of the arrow in the figure, and the resistances of the above two parts The distribution is symmetrical with point C as a symmetrical point, so that the voltage actually applied to the first electrode layer is symmetrically distributed with the dotted line where point C is located, and the voltage in the symmetrical area decreases successively, so that the voltage between the first electrode layer and the second electrode layer Multiple and symmetrical regions with different voltages are formed between them, so that the electrochromic device can display multiple colors at the same time and realize symmetrical discoloration. It should be noted that the "voltage in the symmetrical region" refers to the voltage in one of the two regions of the electrode layer divided by the dotted line where the point C is located.

The specific values of the width W and the length L of the circuit are not particularly limited, as long as the electrode layer can achieve a relatively large voltage drop, those skilled in the art can design according to specific conditions. For example, according to an embodiment of the present invention, the width W of the circuit 600 may be 0.5-5 mm, and the length L may be 1-20 cm. It should be noted that the above-mentioned "realize a large voltage drop" specifically refers to the voltage drop on the circuit 600, which is sufficient to make the electrochromic functional layer in the symmetrical area exhibit at least two colors: the electrochromic function in the symmetrical area The electrochromic material in the layer can display a specific color in a specific voltage range. When the voltage range is different, the color that can be displayed is also different. The above "larger voltage drop" only needs to be able to span at least one specific voltage range of the electrochromic material.

According to a specific embodiment of the present invention, when the width W of the circuit 600 is 1 mm, the resistance change of the circuit 600 is 1 Ω/cm, and the circuit 600 has a voltage drop of 0.2 V every 1 cm in the length direction, thus, it can be The circuit 600 is considered to be composed of a plurality of sections with a length of 1 cm. When a certain voltage is applied to the electrochromic device 1000 from the middle of the circuit 600, the two parts of the circuit 600 are formed with point C as a symmetrical point, starting from point C Each section along the direction of the arrow in FIG. 2 has a voltage drop of 0.2V, so that the voltage actually applied to the electrode layer is symmetrically distributed and the voltage in the symmetrical area decreases successively. According to a specific embodiment of the present invention, the first electrode layer 200 is formed of a transparent conductive material, and a circuit 600 is arranged on the side of the first electrode layer 200, and the second electrode layer 400 is formed of a metal material. 600 applies a voltage of a fixed value (such as +2V), and when the second electrode layer 400 applies a voltage of a fixed value (such as 0V), since the circuit 600 is bounded by point C, each segment along the length direction will have 0.2 The voltage drop of V, after passing through the circuit 600, is output to different areas of the first electrode layer 200 by a plurality of transparent lead wires, corresponding to different positive voltages, and the voltages are symmetrically distributed, so that it is actually applied to the symmetrical area of the electrode layer (based on the circuit The voltage in each small area also has a voltage drop of 0.2V in the two areas divided by the dotted line in the middle part), for example, with reference to Figure 5, the voltages in (c1), (c2) areas are 2V respectively, (b1), The voltages of (b2) area are 1.8V respectively, and the voltages of (a1) and (a2) areas are 1.6V respectively, that is to say, (c1) and (c2), (b1) and (b2), (a1) and (a2) are symmetrically distributed with the dotted line where point C is located as the axis of symmetry. Since there is no voltage drop in each area of the second electrode layer 400, each area divided between the first electrode layer 200 and the second electrode layer 400 along the length direction of the circuit 600 will form a different electric field, for example, (c1), ( The voltage between the two electrode layers corresponding to the c2) area is 2V, the voltage between the two electrode layers corresponding to the (b1) and (b2) areas is 1.8V, and the two electrode layers corresponding to the (a1) and (a2) areas The voltage between the electrode layers is 1.6V, so that the electrochromic functional layer corresponding to the above-mentioned different voltage regions exhibits different colors under corresponding voltages.

As mentioned above, electrochromic materials can display specific colors within a certain voltage range. Therefore, when the voltage between different sections is too small to allow the electrochromic material to change color across domains, even if the voltages in each area of the electrode layer are not the same, the electrochromic material cannot be displayed. different color. As mentioned earlier, the value of the voltage drop increases with the length L of the circuit. Therefore, in order to ensure that the electrochromic material changes color in the region where the electrode layer voltage is the smallest (for example, the region farthest from point C in the length direction of the circuit), in this embodiment, the length L of the circuit 600 may be 20 cm. That is to say, the length L/2 of the circuit 600 corresponding to the symmetrical region of the electrode layer may be 10 cm. According to the embodiment of the present invention, the resistance of the circuit 600 is changed according to the coordination of its width and length, and the change process of the resistance of the two parts divided by the point C as a symmetrical point is a gradual process. Therefore, the actually applied to the electrode layer The voltages in the symmetrical regions are also gradually changing, and the final colors of the symmetrical regions of the electrochromic device 1000 are also gradually changing colors.

According to other embodiments of the present invention, when a voltage of a fixed value (such as 0V) is applied to the second electrode layer 400, the voltage value applied to the circuit 600 by the external circuit from the voltage input port 30 is a constant value (such as +1.4V ), the voltage between the two electrode layers corresponding to the (c1) and (c2) regions is 1.4V, and the voltage between the two electrode layers corresponding to the (b1) and (b2) regions is 1.2V, (a1 ), the voltage between the two electrode layers corresponding to the (a2) area is 1V, and the colors corresponding to the (c1) and (c2) areas, (b1) and (b2) areas, and (a1) and (a2) areas are respectively Brown-blue, brown-purple, and purple make the electrochromic device present multiple colors at the same time, and the colors are distributed symmetrically and gradually.

According to an embodiment of the present invention, the circuit 600 is connected to at least one of the first electrode layer 200 and the second electrode layer 400 through a plurality of transparent leads 10, specifically referring to FIG. 2 , the circuit 600 is connected through a plurality of transparent leads parallel to each other. 10 and the first electrode layer 200, and the distance between two adjacent transparent leads 10 (d as shown in Figure 2) is 1-10mm, thus, it is possible to make the electrode layer and the circuit have a good electrical connection . According to a specific embodiment of the present invention, the distance between two adjacent transparent leads 10 may be 1 mm. Since the length of the transparent lead is relatively short, the resistance of the transparent lead has little influence on the voltage of the electrochromic device. Therefore, the constituent material of the transparent lead is not particularly limited, as long as it has high transparency and good electrical conductivity. Those skilled in the art can design according to specific conditions. For example, according to an embodiment of the present invention, the transparent lead 10 may be formed of indium tin oxide.

According to an embodiment of the present invention, referring to FIG. 2, the electrochromic device 1000 may further include a control circuit 20, and the control circuit 20 is connected to the voltage input port 30 in the middle of the circuit 600, so that the electrochromic device can be applied to the electrochromic device through the control circuit. Voltage, and the voltage applied to the electrode layer is divided into two symmetrical regions with the middle part of the circuit as the boundary, so that the electrochromic device can realize symmetrical color change.

According to an embodiment of the present invention, the circuit 600 is disposed at a side of at least one of the first electrode layer 200 and the second electrode layer 400 . According to a specific embodiment of the present invention, the circuit 600 (as shown in FIG. 3 ) can only be arranged on the side of the first electrode layer 200. At this time, the second electrode layer 400 can be formed by a metal material, and the resistance of the metal material The rate is small, and the resistance of the second electrode layer 400 has negligible influence on the voltage of the electrochromic device 1000. That is to say, in this embodiment, by designing the length and width of the circuit 600, and starting from the middle of the circuit 600 The voltage is applied so that the voltages applied to the first electrode layer 200 are distributed symmetrically and the voltages in the symmetrical regions are different from each other, so that the electrochromic device 1000 can display multiple colors at the same time and realize symmetrical discoloration. Similarly, according to other embodiments of the present invention, the circuit 600 may be provided only on the side of the second electrode layer 400 (this situation is not shown in the figure), at this time, the first electrode layer 200 may be made of metal material formed, and a voltage is applied from the middle of the circuit 600, so that the electrochromic device 1000 can display multiple colors at the same time and realize symmetrical discoloration. According to the embodiment of the present invention, the electrode layer formed by the metal material can also cover the components inside the electronic device, further improving the appearance of the electronic device, and at the same time, the metal material has a certain metallic color. When no voltage is applied to the electrochromic device 1000, The electrochromic device 1000 can be made to present a certain metallic color.

According to a preferred embodiment of the present invention, the sides of the first electrode layer 200 and the second electrode layer 400 are provided with a circuit 600, specifically referring to FIG. 4, the side of the first electrode layer 200 is provided with a circuit 600A, and the The side of the layer 400 is provided with a circuit 600B, the middle part of the circuit 600A (at the position of point C as shown in the figure) has a voltage input port 30A, and the middle part of the circuit 600B (at the position of point D as shown in the figure) place) has a voltage input port 30B, by designing the length and width of the circuit 600A and the circuit 600B, and applying voltages from the voltage input port 30A and the voltage input port 30B respectively, so that the voltage actually applied to the first electrode layer 200 is C The dotted line where the point is located is symmetrically distributed, and the voltages in the symmetrical areas are different from each other, so that the voltage actually applied to the second electrode layer 400 is symmetrically distributed with the dotted line where the point D is located, and the voltages in the symmetrical areas are different from each other , so that the electrochromic device 1000 can display multiple colors at the same time and realize symmetrical discoloration, and the color is more vivid.

According to an embodiment of the present invention, referring to FIG. 5 , the control circuit 20 is connected to the middle of the circuit 600A to apply a voltage to the electrochromic device, and the voltage actually applied to the first electrode layer 200 is divided into two by the dotted line where point C is located. Symmetrical area, the voltage of the symmetrical area decreases successively along the direction of the arrow in the figure, and each symmetrical area is divided into multiple voltage areas according to different voltages, such as (a1) area, (b1) area, (c1) area, Or (a2) area, (b2) area, (c2) area, that is, (a1) area has the same voltage as (a2) area, and (b1) area has the same voltage as (b2) area , the voltage in the (c1) region is the same as the voltage in the (c2) region, forming two symmetrical regions with symmetrical voltage distribution, so that multiple and symmetrical voltage differences can be formed between the first electrode layer 200 and the second electrode layer 400 The electrochromic material corresponding to each of the above-mentioned regions presents a color under a corresponding voltage, so that the electrochromic device 1000 can display multiple colors at the same time and realize symmetrical discoloration. It should be noted that the above (a1) area, (b1) area, (c1) area, (a2) area, (b2) area, (c2) area are only for illustrating that the first electrode layer can have multiple and symmetrical The voltage range of the first electrode layer cannot be understood as a limitation on the number of voltage ranges of the first electrode layer, and as mentioned above, the change of the voltage of the electrode layer is a gradual process, that is to say, there is no obvious boundary for each voltage range of the electrode layer. Here, the above (a1) region, (b1) region, (c1) region, (a2) region, (b2) region, (c2) region are only for macroscopicizing each voltage region of the first electrode layer. The boundary between can not be understood as that each voltage region of the first electrode layer has a clear boundary.

According to an embodiment of the present invention, referring to FIG. 6 , the electrochromic device 1000 includes: a first substrate 100 and a second substrate 500, the first substrate 100 is disposed on the side of the first electrode layer 200 away from the electrochromic functional layer 300, The second substrate 500 is disposed on a side of the second electrode layer 400 away from the electrochromic functional layer 300 , and the first substrate 100 and the second substrate 500 are independently formed of glass or plastic. Thereby, the color of the electrochromic functional layer can be revealed. According to an embodiment of the present invention, when the first substrate 100 and the second substrate 500 are formed of plastic, they may be specifically formed of polyethylene terephthalate or polycarbonate. Thus, the cost of the electrochromic device can be reduced, and the electrochromic device can be made into a pattern with a specific shape. For example, circle, triangle, heart shape, etc., or it can also be made into a trademark pattern (LOGO).

According to an embodiment of the present invention, referring to FIG. 6 , the electrochromic functional layer 300 includes an electrochromic layer 310, an electrolyte layer 320, and an ion storage layer 330, wherein the electrochromic layer 310 is arranged on the first electrode layer 200 and the second electrode layer 200. Between the electrode layers 400 , the electrolyte layer 320 is disposed between the electrochromic layer 310 and the ion storage layer 330 . The specific arrangement sequence of the electrochromic layer, the electrolyte layer and the ion storage layer is not particularly limited, as long as the electrochromic layer can be realized, those skilled in the art can design according to the specific situation. For example, according to an embodiment of the present invention, the electrochromic layer 310 may be disposed on the side of the first electrode layer 200 away from the first substrate 100, and the electrolyte layer 320 may be disposed on the side of the electrochromic layer 310 away from the first electrode layer 200. , the ion storage layer 330 is disposed on the side of the electrolyte layer 320 away from the electrochromic layer 310 . Alternatively, according to other embodiments of the present invention, the ion storage layer 330 is disposed on the side of the first electrode layer 200 away from the first substrate 100 , and the electrolyte layer 320 is disposed on the side of the ion storage layer 330 away from the first electrode layer 200 , The electrochromic layer 310 is disposed on the side of the electrolyte layer 320 away from the ion storage layer 330 (this situation is not shown in the figure).

According to the embodiment of the present invention, as mentioned above, the electrochromic layer 310 has different colors under different voltages, thus, after a certain voltage is applied to the electrochromic device from the middle of the circuit, the color between the corresponding two electrode layers The electrochromic layer in different voltage regions will display the color under the corresponding voltage, so that the electrochromic layer can display multiple colors at the same time and realize symmetrical color change. The inventors found that the oxidation-reduction reaction of the inorganic color-changing material is slow and the current generated is small. According to the voltage formula U=IR, even if the resistance of the electrode layer is large, its influence on the voltage of the electrochromic device is still small. It is not enough to generate a large voltage drop, so that the electrochromic device cannot display multiple colors at the same time. According to an embodiment of the present invention, the electrochromic layer 310 is formed of an organic electrochromic material. The oxidation-reduction reaction of organic electrochromic materials is faster, and the current generated is larger. At the same time, with the larger resistance of the circuit, the voltage drop on the circuit is larger, and the voltage actually applied to the symmetrical area of the electrode layer is different from each other. , forming multiple and symmetrical regions with different voltages between the two electrode layers, so that the electrochromic device can display multiple colors at the same time.

According to an embodiment of the present invention, referring to FIG. 6 , the electrochromic device 1000 may further include: an optical adhesive layer 700 and a release film layer 800, wherein at least one of the first electrode layer 200 and the second electrode layer 400 is far away from One side of the electrochromic functional layer 300 is provided with an optical adhesive layer 700 , and the side of the optical adhesive layer 700 away from the electrochromic functional layer 300 is provided with a release film layer 800 . Thus, the electrochromic device can be stored independently, and only need to remove the release film layer during use, and use the optical adhesive layer to attach the electrochromic device to the housing substrate, that is to say, through a simple A shell that can present multiple colors at the same time and realize symmetrical color change can be obtained by assembling.

According to an embodiment of the present invention, when only one electrode layer of the first electrode layer 200 and the second electrode layer 400 is formed of a transparent conductive material (for example, indium tin oxide), it can only be provided on one side of the electrochromic device 1000 The optical adhesive layer 700 and the release film layer 800 , at this time, the optical adhesive layer 700 and the release film layer 800 are disposed on the substrate on the side where the transparent electrode layer is disposed.

According to a preferred embodiment of the present invention, both the first electrode layer 200 and the second electrode layer 400 are formed of a transparent conductive material (for example, indium tin oxide), and the optical glue layer 700 and the Release film layer 800. Specifically, referring to FIG. 6, the optical adhesive layer 700A is disposed on the side of the first substrate 100 away from the electrochromic functional layer 300, the release film layer 800A is disposed on the side of the optical adhesive layer 700A away from the first substrate 100, and the optical adhesive The layer 700B is disposed on the side of the second substrate 500 away from the electrochromic functional layer 300 , and the release film layer 800B is disposed on the side of the optical adhesive layer 700B away from the second substrate 500 . According to the embodiment of the present invention, one side of the electrochromic device provided with two layers of optical adhesive layers can be attached to the housing substrate, and the other side can be attached to other pattern films, thereby further improving the application of the electrochromic device. The appearance effect of the shell of the chromic device.

According to the embodiment of the present invention, as mentioned above, in the electrochromic device 1000, the specific positions of the electrolyte layer 320, the ion storage layer 330, and the electrochromic layer 310 are not particularly limited, and the electrochromic device 1000 will be carried out later. When laminating, the electrochromic layer 310 can be arranged on the side close to the housing substrate, or on the side away from the housing substrate: since the two substrates, the two electrode layers, the electrolyte layer and the ion storage layer are both It is transparent, therefore, any side of the electrochromic device is attached to the shell substrate, and the color of the electrochromic layer can be revealed. That is to say, for an electrochromic device whose electrode layers are all transparent layers, the bonding direction during bonding can be unlimited, and there is no need to distinguish the front and back sides, which is conducive to further simplifying the assembly process.

In another aspect of the invention, the invention proposes a housing. According to an embodiment of the present invention, referring to FIG. 7, the housing includes: a housing substrate 2000 and at least one electrochromic device 1000, the electrochromic device 1000 is arranged on the housing substrate 2000, and the electrochromic device 1000 is the front described electrochromic devices. Therefore, the housing has all the features and advantages of the electrochromic device described above, which will not be repeated here. In general, the shell can display multiple colors at the same time and realize symmetrical color change, which has a cool and individual appearance.

According to an embodiment of the present invention, the casing may include a plurality of electrochromic devices 1000, and the plurality of electrochromic devices 1000 are stacked. When a voltage is applied to multiple electrochromic devices 1000 at the same time, each electrochromic device 1000 can display multiple colors at the same time and the colors are symmetrically distributed. Each color finally presented is the color of a plurality of electrochromic devices overlapping in the corresponding area, which further enriches the appearance effect of the casing.

According to an embodiment of the present invention, when the first electrode layer 200 and the second electrode layer 400 are both formed of a transparent conductive material (for example, indium tin oxide) as mentioned above, the casing may further include: a pattern film 3000, The pattern film 3000 is disposed on a side of the electrochromic device 1000 away from the housing substrate 2000 . Thus, the appearance effect of the casing can be further enriched.

According to an embodiment of the present invention, the pattern film 3000 may include: at least one of a texture printing layer 3100, an optical coating layer 3200, and an ink layer 3300, wherein the ink layer 3300 is disposed in the pattern film 3000 away from the electrochromic device 1000 side. Thus, the ink layer can be used to cover the components inside the electronic device and improve the appearance of the electronic device. The arrangement order of the texture printing layer and the optical coating layer is not particularly limited. For example, the texture printing layer 3100 can be arranged on the side of the optical adhesive layer 700B away from the second substrate 500, and the optical coating layer 3200 is arranged on the texture printing layer 3100 away from the optical layer. One side of the adhesive layer 700B, or the optical coating layer 3200 can be disposed on the side of the optical adhesive layer 700B away from the second substrate 500, and the texture printing layer 3100 is disposed on the side of the optical coating layer 3200 away from the optical adhesive layer 700B. Therefore, when no voltage is applied, the housing can present a certain texture pattern or color, which enriches the appearance of the housing.

According to the embodiment of the present invention, when assembling the housing substrate 2000, the electrochromic device 1000, and the pattern film 3000, only the release film layer 800A and the release film layer 800B need to be removed, and the optical adhesive layer 700A Attach the electrochromic device 1000 on the housing substrate 2000 , and attach the pattern film 3000 on the side of the electrochromic device 1000 away from the housing substrate 2000 by using the optical adhesive layer 700B. As a result, the casing can present multiple colors at the same time and realize symmetrical discoloration, which has a cool and individual appearance.

In another aspect of the invention, the invention proposes an electronic device. According to an embodiment of the present invention, the electronic device includes the casing described above, thus, the electronic device has all the features and advantages of the casing described above, which will not be repeated here. In general, the electronic device has an appearance that can present different colors at the same time and realize symmetrical color change, which improves user experience.

According to the embodiment of the present invention, the electronic device can also implement multiple applications according to customization. For example, when charging the electronic device, the shell can display multiple colors at the same time and realize symmetrical color change. The body color is combined with the charging capacity, that is to say, when the housing presents a certain combination of colors, the charging capacity of the electronic device can reach a certain ratio, thus, it is convenient for the user to directly judge the electronic device by the color of the housing The charging situation is more intuitive and convenient.

According to an embodiment of the present invention, the electronic device may be a mobile phone, a notebook computer, a PAD, an electronic photo album, a smart photo frame, an electronic watch, and the like. Therefore, the above-mentioned electronic device has an appearance that can present different colors at the same time and realize symmetrical color change, thereby improving user experience.

It should be noted that in the present invention, the terms "first" and "second" are only used for distinction, and should not be construed as a limitation of the present invention or a difference in importance. Specifically, in the electrochromic device or the housing, the first substrate and the second substrate are only used to distinguish the two substrates, and cannot be understood as restrictions on their location, importance, or material and structure. Similarly, the first electrode layer and the second electrode layer are only used to distinguish the two electrode layers. For the convenience of description, let the electrode layer arranged on the first substrate be the first electrode layer, and the electrode layer arranged on the second substrate layer is the second electrode layer.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (15)

1. An electrochromic device, characterized in that, comprising: a first electrode layer and a second electrode layer; An electrochromic functional layer, the electrochromic functional layer is located between the first electrode layer and the second electrode layer; A circuit, the circuit is electrically connected to the first electrode layer and/or the second electrode layer, the circuit has a plurality of transparent leads arranged at intervals, and the plurality of transparent leads are respectively connected to the first electrode layer and/or the second electrode layer, so that multiple regions between the first electrode layer and the second electrode layer have different voltage drops, and the middle part of the circuit has a voltage input port, Wherein, the electrochromic functional layer presents different colors in the plurality of regions due to different voltage drops. 2. The electrochromic device according to claim 1, characterized in that, the first electrode layer and/or the second electrode layer, and the circuit are formed of a transparent conductive material, and the transparent conductive material The material includes at least one of indium tin oxide, indium zinc oxide, indium tin zinc oxide and nano silver. 3. The electrochromic device according to claim 2, wherein the thickness of the circuit is smaller than the thickness of the electrode layer formed of the transparent conductive material. 4. The electrochromic device according to claim 1, wherein the transparent leads are arranged parallel to each other. 5 . The electrochromic device according to claim 4 , wherein the distance between two adjacent transparent leads is 1-10 mm. 6. The electrochromic device according to claim 1, further comprising: A control circuit, the control circuit is connected to the voltage input port. 7. The electrochromic device according to claim 1, wherein the electrochromic functional layer comprises an electrochromic layer, and the electrochromic layer is formed of an organic electrochromic material. 8. The electrochromic device according to claim 1, further comprising: a first substrate, the first substrate is disposed on a side of the first electrode layer away from the electrochromic functional layer; a second substrate, the second substrate is disposed on a side of the second electrode layer away from the electrochromic functional layer, Wherein, the first substrate and the second substrate are independently formed of glass or plastic. 9. The electrochromic device according to claim 8, further comprising: An optical adhesive layer, at least one of the first substrate and the second substrate is provided with the optical adhesive layer on a side away from the electrochromic functional layer; and A release film layer, the release film layer is arranged on the side of the optical adhesive layer away from the electrochromic functional layer. 10. A housing, characterized in that it comprises: A casing substrate and at least one electrochromic device according to any one of claims 1-9, the electrochromic device is arranged on the casing substrate. 11 . The housing according to claim 10 , wherein the housing comprises a plurality of electrochromic devices, and the plurality of electrochromic devices are stacked. 12. The housing of claim 10, further comprising: A patterned membrane, the patterned membrane is arranged on a side of the electrochromic device away from the housing substrate. 13. The housing according to claim 12, wherein the pattern film comprises at least one of a texture printing layer, an optical coating layer and an ink layer. 14 . The housing according to claim 13 , wherein the ink layer is disposed on a side of the patterned film away from the electrochromic device. 15 . 15. An electronic device, comprising the casing according to any one of claims 10-14.