CN113113759B

CN113113759B - Electronic equipment

Info

Publication number: CN113113759B
Application number: CN202110400569.7A
Authority: CN
Inventors: 杨文强; 张敏; 谢华飞; 吴俊纬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2023-05-09
Anticipated expiration: 2041-04-14
Also published as: CN113113759A

Abstract

The application discloses an electronic device, including casing and radiation portion, the casing includes electrode layer and electrochromic layer that the stack set up. The radiation part is arranged at the backlight side of the shell corresponding to the outer edge of the shell. The number of the electrode layers is multiple, the electrochromic layer is clamped between two of the electrode layers, at least one of the electrode layers comprises a thinning part and a stacking part, the thinning part is connected with the stacking part, the thinning part is arranged corresponding to the radiation part, and the thickness of the thinning part is smaller than that of the stacking part. The thickness of the thinned portion corresponding to the radiation portion is smaller than that of the stacked portion, so that the charging speed of the thinned portion can be reduced, the communication influence of the thinned portion on the corresponding radiation portion is reduced, and the normal communication performance of the radiation portion is ensured.

Description

Electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to electronic equipment.

Background

In the related art, the color of the housing of the electronic device is determined by the color of the material constituting the housing, and if a single-color plastic material housing is used, a stainless steel decorative strip is disposed on the single-color plastic material housing or a metal layer (such as gold or silver) is plated on the single-color plastic material housing by using electroplating technology to form the housing with a metal color. However, because of the single lack of variation in the color of the housing of the electronic device, a rich color and a changing color experience cannot be given to the user. If the shell is made of materials with different colors, different production processes and materials are needed, so that the production cost of the electronic equipment is increased to a certain extent. Along with the development of materials and process technologies, electrochromic materials are applied to the shell of electronic equipment, and different colors are switched through voltage control, so that the shell can have different color choices, and the user experience is greatly improved.

However, in the process of realizing the present application, it has been found that there is at least a problem in the prior art in that electrochromic is a phenomenon in which optical properties (reflectance, transmittance, absorptivity, etc.) of a material undergo a stable and reversible color change under the action of an applied electric field, and is expressed as a reversible change in color and transparency in appearance. Because the electronic equipment comprises various antennas which are used, when the shell of the electronic equipment comprises electrochromic materials, the shell can be surrounded by a whole piece of electric charge, electromagnetic shielding is easy to form, communication performance of various components which depend on the antennas in the electronic equipment is poor, even the components cannot be used at all, and user experience is seriously affected.

Disclosure of Invention

The application aims to provide electronic equipment, which at least solves one of the problems that the communication performance of various components depending on antennas in the electronic equipment in the related technology is poor and even the electronic equipment cannot be used at all.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application proposes an electronic device, including:

a case including an electrode layer and an electrochromic layer stacked;

the radiation part is arranged on the backlight side of the shell corresponding to the outer edge of the shell.

The number of the electrode layers is multiple, the electrochromic layer is clamped between two of the electrode layers, at least one of the electrode layers comprises a thinning part and a stacking part which are connected, the thinning part is arranged corresponding to the radiation part, and the thickness of the thinning part is smaller than that of the stacking part.

In an embodiment of the present application, an electronic device includes a case including an electrode layer and an electrochromic layer which are stacked, and the electrochromic layer can display a specific color under a condition that an appropriate voltage is applied to the electrode layer. The radiation part is positioned at the backlight side of the shell and is used for receiving and transmitting radio frequency signals. Further, the radiation portions are disposed corresponding to the outer edges of the housing, that is, the radiation portions are integrally disposed and correspond to the outer edges of the housing. The number of the electrode layers is plural, and the electrochromic layer is arranged between two adjacent electrode layers. At least one electrode layer of the plurality of electrode layers comprises a thinning part and a stacking part which are connected, the thinning part is arranged corresponding to the radiation part, and the thickness of the thinning part is smaller than that of the stacking part. In the application, compared with the thickness of the electrode layer (stacking part) in other areas, the thickness of the partial electrode layer (thinning part) corresponding to the radiation part is smaller, so that the charging speed of the thinning part can be reduced, the influence of the partial electrode layer (thinning part) on the receiving and transmitting signals of the radiation part corresponding to the partial electrode layer (thinning part) can be reduced, and the normal communication performance of the radiation part is ensured.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is one of the schematic structural diagrams of an electronic device according to an embodiment of the present application;

FIG. 2 is a second schematic diagram of an electronic device according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of an electronic device according to one embodiment of the present application;

FIG. 4 is a cross-sectional view of an electronic device according to another embodiment of the present application;

fig. 5 is a cross-sectional view of an electronic device according to yet another embodiment of the present application.

Reference numerals:

a 100-degree electronic device is provided that,

a housing 110 to which the housing is attached,

111 electrode layer, 111a thinned portion, 111b stacked portion,

1111 a first electrode layer of the metal layer,

a second electrode layer 1112 is provided,

112 an electrochromic layer,

1131 a first PET layer, 1132 a second PET layer,

1141 a first optical cement layer, 1142 a second optical cement layer,

115 times of the semi-permeable film,

116 a layer of white ink,

117 a glass cover plate,

120 radiation portions.

Detailed Description

Reference will now be made in detail to embodiments of the present application, 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 functionality throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

An electronic device 100 according to an embodiment of the present application is described below with reference to fig. 1 to 5.

According to some embodiments of the present application, an electronic device 100, as shown in fig. 1 and 2, includes a case 110 and a radiation portion 120, the case 110 including an electrode layer 111 and an electrochromic layer 112 that are stacked. The radiation part 120 is provided at the backlight side of the case 110 corresponding to the outer edge of the case 110. The number of the electrode layers 111 is plural, the electrochromic layer 112 is sandwiched between two of the electrode layers 111, at least one electrode layer 111 of the electrode layers 111 includes a thinned portion 111a and a stacked portion 111b connected to each other, the thinned portion 111a is disposed corresponding to the radiation portion 120, and the thickness of the thinned portion 111a is smaller than the thickness of the stacked portion 111 b.

In an embodiment of the present application, the electronic device 100 includes a housing 110 and a radiating portion 120.

Specifically, the case 110 includes the electrode layer 111 and the electrochromic layer 112 stacked, and the electrochromic layer 112 may display a specific color under the condition that an appropriate voltage is applied to the electrode layer 111. The housing 110 is a rear shell of the electronic device 100, and the electronic device 100 further includes a display component, a middle frame, and other structures, where the rear shell, the display component, and the middle frame together can form a housing cavity, and the housing cavity is used for accommodating other functional modules of the electronic device 100.

Specifically, the radiation portion 120 is located on the backlight side of the housing 110, and the radiation portion 120 is configured to transmit and receive radio frequency signals. Further, the radiation portion 120 is disposed corresponding to the outer edge of the housing 110, that is, the radiation portion 120 is integrally disposed and located in the accommodating cavity corresponding to the outer edge of the housing 110.

Further, as shown in fig. 3 to 5, the number of the electrode layers 111 is plural, and the electrochromic layer 112 is provided between two adjacent ones of the plurality of electrode layers 111. In practical applications, the number of the electrode layers 111 is two, and two electrode layers 111 are respectively stacked on two sides of the electrochromic layer 112, and as it is known from the foregoing description, the housing 110 of the electronic device 100 and other structural components of the electronic device 100 may form a receiving cavity, and then the electrochromic layer 112 in the housing 110 has an inner side and an outer side. The inside of the electrochromic layer 112, i.e. the side close to the receiving cavity, and the outside of the electrochromic layer 112, i.e. the side facing away from the receiving cavity. One electrode layer 111 of the two electrode layers 111 is stacked on the inner side of the electrochromic layer 112, and the other electrode layer 111 of the two electrode layers 111 is stacked on the outer side of the electrochromic layer 112. When the two electrode layers 111 are energized, electric charges are distributed on the two electrode layers 111 to form an electric field, and the electrochromic layer 112 is influenced by the electric field to change color. Specifically, for the electrochromic layer 112, it has a transparent state and a colored state, in the non-energized state of the electrode layer 111, the electrochromic layer 112 is in the transparent state, and when the electrode layer 111 is energized, the electrochromic layer 112 is in the colored state, so that the housing 110 presents a rich and varied color.

Further, at least one electrode layer 111 of the plurality of electrode layers 111 includes a thinned portion 111a and a stacked portion 111b connected to each other, the thinned portion 111a is disposed corresponding to the radiation portion 120, and a thickness of the thinned portion 111a is smaller than a thickness of the stacked portion 111 b. In a specific embodiment, the thinned portion 111a is surrounded on the outer side of the stacked portion 111b, so that the electrode layer 111 may be in a state that the thickness of the center is greater than that of the outer edge, that is, the electrode layer 111 is thick in the middle and thin on both sides. That is, the two electrode layers 111 may be formed to be thick in the middle and thin in both sides, or one electrode layer 111 of the two electrode layers 111 may be formed to be thick in the middle and thin in both sides, and the other electrode layer 111 of the two electrode layers 111 may be formed to be equal in thickness.

In the present application, compared with the electrode layer 111 (the stacked portion 111 b) in other areas, the thickness of the partial electrode layer 111 (the thinned portion 111 a) corresponding to the radiation portion 120 is smaller, so that the charging speed of the partial electrode layer 111 (the thinned portion 111 a) can be reduced, thereby reducing the influence of the thinned portion 111a in the electrode layer 111 on the transmitting and receiving signals of the corresponding radiation portion 120 and ensuring the normal communication performance of the radiation portion 120.

It should be noted that, when the thickness of the outer edge of the electrode layer 111 is reduced, the sheet resistance of the outer edge of the electrode layer 111 is increased. The sheet resistor is a square resistor, where r=ρ/d, where ρ is the resistivity, d is the side length of the square, and the square resistor has a characteristic that the square side-to-side resistance of any size is the same, and the sheet resistor is the same regardless of whether the side length is 1m or 0.1m, that is, the sheet resistor is related to the thickness of the electrode layer 111. In the present application, by controlling the thickness of the outer edge of the electrode layer 111 corresponding to the radiation portion 120, the charging speed of the electrode layer 111 corresponding to the radiation portion 120 on the electrode layer 111 is controlled, and the charging speed of the region with a larger sheet resistance is slowed down, so that the influence of the charging region on the antenna function of the radiation portion 120 corresponding to the charging region is reduced.

The electrode layer 111 is an ITO (Indium Tin Oxides, indium tin oxide) layer.

The number of the stacked portions 111b may be plural, and the plurality of stacked portions 111b and the plurality of thinned portions 111a may be connected. For example, the number of the radiation portions 120 is plural, the plural radiation portions 120 are disposed at intervals and arranged corresponding to the outer edge of the housing 110, and the partial stacked portion 111b is located between adjacent radiation portions 120 among the plural radiation portions 120. For the entire electrode layer 111, the plurality of stacked portions 111b may exhibit a center-out diffusion shape, and thinning processing is performed only for a portion of the electrode layer 111 corresponding to the radiation portion 120 to form a thinned portion 111a.

Further, as shown in fig. 4, the thinned portion 111a is enclosed at the outer edge of the stacked portion 111b, and the thinned portion 111a includes a thinned surface facing away from the electrochromic layer 112, wherein the thinned surface includes a first edge and a second edge, the first edge is connected to the stacked portion 111b, the second edge is far away from the stacked portion compared to the first edge, and a distance between the first edge and the electrochromic layer 112 is smaller than a distance between the second edge and the electrochromic layer 112.

In this embodiment, the electrode layer 111 includes a stacked portion 111b and a thinned portion 111a enclosed at an outer edge of the stacked portion 111b, the thickness of the stacked portion 111b being greater than the thickness of the thinned portion 111a. The thinning portion 111a includes a thinning surface adjacent to the electrochromic layer 112, and a first edge of the thinning surface is connected to the stacking portion 111b, i.e., the first edge of the thinning surface is an inner edge, and a second edge of the thinning surface corresponds to an outer edge of the case 110, i.e., the second edge of the thinning surface is an outer edge. For the thinning surface, the distance between the thinning surface and the electrochromic layer 112 increases in the inside-out direction, that is, the distance between the inner edge of the thinning surface and the electrochromic layer 112 is smaller than the distance between the outer edge of the thinning surface and the electrochromic layer 112.

In the actual production and preparation process, the electrode layer 111 is arranged on the supporting layer with supporting function in advance due to the thinner thickness of the electrode layer 111, so that subsequent stacking is facilitated. Specifically, the support layer includes a PET (polyethylene terephthalate) layer. The electrode layer 111 is provided on the PET layer by a preparation method such as magnetron sputtering. Next, the electrode layer 111 attached to the PET may be subjected to a thinning process, so that the electrode layer 111 is formed into a thinned portion 111a and a stacked portion 111b with non-uniform thickness, and it can be seen that, on the appearance surface of the final electrode layer 111, there is a corresponding thinned groove at a position corresponding to the thinned portion 111a, that is, the electrode layer 111 includes two opposite surfaces, which are in contact with the PET layer and are planar, and the surface close to the electrochromic layer 112 is non-planar.

Further, as shown in fig. 3, 4 and 5, the thinning surface includes at least one of: curved surface section and plane section.

In this embodiment, the thinning surface may be a curved surface. The thinning surface may be a bevel formed by planar segments. Or may be a curved section and a flat section. As long as it is satisfied that the thickness of the thinned portion 111a is smaller than the thickness of the stacked portion 111 b. Note that the stacked portion 111b has a constant thickness.

Further, as shown in fig. 4, the distance between the thinning surface and the electrochromic layer 112 gradually increases from the first edge toward the second edge.

In this embodiment, the thinning surface has a continuously gradual trend in the direction from inside to outside, that is, the distance between the thinning surface and the electrochromic layer 112 gradually changes, so that the color transition of the electrochromic layer 112 can be softer, and the user does not obviously perceive the color unevenness of the electrochromic layer 112.

In the actual production and preparation process, in order to directly prepare the electrode layers 111 having different thicknesses, a protruding structure may be provided on the supporting layer having a supporting effect in advance, the protruding structure being provided corresponding to the position of the radiation portion 120. In the magnetron sputtering process, the thickness of the electrode layer 111 produced at the position of the protruding structure can be controlled to be small, so that the contact surface of the electrode layer 111 and the supporting layer (PET layer) can be made non-planar, and the contact surface of the electrode layer 111 and the electrochromic layer 112 can be made planar. At this time, the thinned surface of the electrode layer 111 is a surface facing away from the electrochromic layer 112, and at this time, as shown in fig. 3 and 5, the distance between the thinned surface and the electrochromic layer 112 gradually decreases or decreases stepwise in a direction from the first edge to the second edge (i.e., in an inside-out direction).

Further, the distance between the thinning surface and the electrochromic layer 112 increases stepwise from the first edge toward the second edge.

In this embodiment, in the direction from inside to outside, the thinning surface has a continuous gradual trend, that is, the distance between the thinning surface and the electrochromic layer 112 has a stepwise change, so that the difficulty of the thinning process can be reduced, and the controllability in the thinning process can be improved.

Further, the thickness of the stacked portion 111b is 3nm or more and 20nm or less.

In this embodiment, the thickness of the stacked portion 111b satisfying the above range can ensure that the electric field formed by energizing the stacked portion 111b in the electrode layer 111 can normally switch the electrochromic layer 112 in the transparent state and the colored state.

Further, the projection of the thinned portion 111a on the plane perpendicular to the stacking direction is equal to or greater than the projection of the radiation portion 120 on the plane perpendicular to the stacking direction. The stacking direction is a vertical direction, and then the vertical direction is a horizontal direction, that is, the projection of the thinned portion 111a on the horizontal plane is greater than or equal to the projection of the radiating portion 120 on the horizontal plane, so as to meet the requirement of the radiating portion 120. Specifically, the projection size of the thinned portion 111a on the horizontal plane may be adjusted according to the propagation angle parameter designed for the radiation portion 120. In the radiating portion 120, during the process of transmitting and receiving the radio frequency signal by the radiating portion 120, the radiating portion 120 forms a radiating surface, and the size of the thinned portion 111a can be determined by the overlapping position of the radiating surface and the electrode layer 111.

Further, as shown in fig. 3 to 5, the center thickness of each of the plurality of electrode layers 111 is greater than the outer edge thickness of the electrode layer 111.

In this embodiment, each electrode layer 111 of the plurality of electrode layers 111 is in a state of being thick in the middle and thin on both sides, and for the radiation portion 120, the radiation surface formed by the radiation portion includes two thinning portions 111a, and the two thinning portions 111a can increase the sheet resistance of the electrode layer 111 in the corresponding area, so as to slow down the charging efficiency of the corresponding area of the two electrode layers 111, ensure that the two electrode layers 111 will not generate shielding interference to the radiation portion 120, and effectively improve the user experience.

Further, the number of the radiation portions 120 is plural, and the plurality of radiation portions 120 are disposed at intervals corresponding to the outer edge of the housing 110. The plurality of radiating portions 120 include any combination of: the antenna comprises a main control panel, a mobile communication antenna, wiFi, bluetooth and NFC antennas.

In this embodiment, the radiating part 120 includes a main control board, a mobile communication antenna, a WiFi, a bluetooth antenna, an NFC antenna. NFC is a Near Field Communication abbreviation, i.e., short-range wireless communication technology. Main control panel, mobile communication antenna, WIFI, bluetooth antenna and NFC antenna interval distribution are holding the intracavity, and main antenna, mobile communication antenna, WIFI, bluetooth antenna and NFC antenna all link to each other with the main control panel.

Further, the electronic device 100 further includes an etching slit provided on a surface of the thinned portion 111a facing the electrochromic layer 112.

In this embodiment, the electronic device 100 further includes an etching slit provided on a surface of the thinned portion 111a facing the electrochromic layer 112. The immediate etching gap is arranged on the thinning surface. The etching gap may be set according to specific signal frequency band and intensity requirements of each radiation portion 120. That is, the width of the etching slits and the size of the intervals between the etching slits are specifically adjusted for the different radiation portions 120, so that a good electromagnetic wave diffraction effect can be achieved for the different radiation portions 120.

Further, the width of the etching gap is 10 μm or more and 30 μm or less. The number of the etching gaps is more than or equal to 0.3mm and less than or equal to 10mm, and the interval between two adjacent etching gaps is more than or equal to the number of the etching gaps.

In this embodiment, the width of the etching slit satisfies the above range, and the etching slit is invisible to the naked eye, thereby achieving a good visual experience of the electronic apparatus 100. The etching slit may extend in a length direction of the electronic device 100. When the number of etching slits is plural, the plural etching slits are parallel to each other, are arranged at intervals on the thinned portion 111a, and the interval between adjacent two of the plural etching slits is controlled to satisfy the above-described range, so that a good electromagnetic wave diffraction effect can be achieved.

It should be noted that, the number of intervals formed between two adjacent etching gaps is a plurality of, and the plurality of intervals may be equal, may be partially equal, may be completely unequal, and may be adjusted according to actual requirements, which is not limited in this application.

Other configurations of the electronic device 100 according to the embodiments of the present application, such as the case 110 further includes a glass cover plate 117, a translucent film 115, and an arrangement of a white ink layer 116, and the corresponding locations, are known to those of ordinary skill in the art and will not be described in detail herein.

Specifically, along the direction of the incident light, the housing 110 includes a glass cover 117, a first optical adhesive layer 1141, a first PET layer 1131, a first electrode layer 1111, an electrochromic layer 112, a second electrode layer 1112, a second PET layer 1132, a second optical adhesive layer 1142, a semi-transparent film 115, and a white ink layer 116. The present application balances the electrochromic speed and the normal communication performance of the radiating portion 120 at the expense of deferring the color conversion of the portion of the electrochromic layer 112 corresponding to the radiating portion 120. It should be noted that the semitransparent film 115 is similar to a rubber film, and changes the optical path to produce the semitransparent and semi-reflective effects. The white ink layer 116 allows the housing 110 to assume the original color when no electrochromic effect is produced.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising:

a case including an electrode layer and an electrochromic layer which are stacked;

the radiation part is arranged on the backlight side of the shell corresponding to the outer edge of the shell;

the number of the electrode layers is multiple, the electrochromic layer is clamped between two of the electrode layers, at least one electrode layer of the electrode layers comprises a thinning part and a stacking part which are connected, the thinning part is arranged corresponding to the radiation part, and the thickness of the thinning part is smaller than that of the stacking part;

the thinning part is arranged at the outer edge of the stacking part in a surrounding way and comprises a thinning surface close to the electrochromic layer,

wherein the thinning surface comprises:

a first edge connected to the stacking portion;

a second edge, a distance between the first edge and the electrochromic layer being less than a distance between the second edge and the electrochromic layer compared to the first edge being remote from the stack;

the distance between the thinning surface and the electrochromic layer gradually changes from the first edge to the second edge.

2. The electronic device of claim 1, wherein the electronic device comprises a memory device,

the thinning surface comprises at least one of the following: curved surface section and plane section.

3. The electronic device of claim 1, wherein the electronic device comprises a memory device,

the distance between the thinning surface and the electrochromic layer gradually increases from the first edge to the second edge.

4. The electronic device of claim 1, wherein the electronic device comprises a memory device,

the distance between the thinning surface and the electrochromic layer increases in a step shape from the first edge to the second edge.

5. The electronic device of claim 1, wherein the electronic device comprises a memory device,

the thickness of the stacked portion is 3nm or more and 20nm or less.

6. The electronic device of claim 1, wherein the electronic device comprises a memory device,

the center thickness of each of the plurality of electrode layers is greater than the outer edge thickness of the electrode layer.

7. The electronic device of claim 1, wherein the electronic device comprises a memory device,

the number of the radiation parts is multiple, and the radiation parts are arranged at intervals corresponding to the outer edges of the shell;

the plurality of radiating portions include any combination of: the antenna comprises a main control panel, a mobile communication antenna, wiFi, bluetooth and NFC antennas.

8. The electronic device of any one of claims 1-7, wherein the electronic device further comprises:

and the etching gap is formed on the surface of the thinning part facing the electrochromic layer.

9. The electronic device of claim 8, wherein the electronic device comprises a memory device,

the width of the etching gap is more than or equal to 10 mu m and less than or equal to 30 mu m;

the number of the etching gaps is more than or equal to 0.3mm and less than or equal to 10mm, and the interval between two adjacent etching gaps is more than or equal to the number of the etching gaps.