CN115704979A

CN115704979A - Electrochromic module, cover plate assembly and electronic equipment

Info

Publication number: CN115704979A
Application number: CN202110942812.8A
Authority: CN
Inventors: 陈宏�; 孙树辉
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2023-02-17
Also published as: WO2023020195A1

Abstract

The application relates to an electrochromic module, apron subassembly and electronic equipment, electrochromic module includes: the antenna comprises a metal layer, a first dielectric layer, a first conducting layer, a color-changing material layer and a second conducting layer which are sequentially stacked, wherein at least one side of the metal layer is used for arranging an antenna radiating body and is arranged at intervals with the antenna radiating body, and the metal layer is grounded. When the antenna radiator is arranged on at least one side of the metal layer, the metal layer in the electrochromic module can be used for isolating the first conducting layer and the second conducting layer from absorbing electromagnetic waves generated by the antenna radiator, induced current generated on the metal layer can be guided into the ground, and the interval between the electrochromic module and the middle frame can be further reduced on the premise that the radiation performance of the antenna radiator is not affected, so that the appearance decorative effect of the rear shell is further improved, and the appearance expressive force of the rear shell is improved.

Description

Electrochromic module, cover plate assembly and electronic equipment

Technical Field

The application relates to the technical field of antennas, in particular to an electrochromic module, a cover plate assembly and electronic equipment.

Background

The electrochromic film is a color-changing shielding film material commonly used at the positions of building external glass, automobile rearview mirrors and the like. The appearance design of electronic equipment (such as a mobile phone, a tablet computer, a smart watch and the like) products tends to be assimilated, and the electrochromic film can bring new characteristics of appearance color change to the electronic equipment. Taking a mobile phone as an example, the frame of the mobile phone shell is mainly provided with a seam-breaking antenna, and when the mobile phone shell adopts an electrochromic membrane, a conductive film layer in the electrochromic membrane can generate an energy absorption effect, so that the performance of the peripheral antenna is reduced.

Disclosure of Invention

The embodiment of the application provides an electrochromic module, a cover plate assembly and an electronic device, and can improve the appearance decorative effect of a rear shell on the premise that the radiation performance of an antenna radiator is not affected, so that the appearance expressive force of the rear shell is improved.

An electrochromic module comprising: a metal layer, a first dielectric layer, a first conductive layer, a color-changing material layer, and a second conductive layer sequentially stacked,

at least one side of the metal layer is used for arranging an antenna radiating body and is arranged at an interval with the antenna radiating body, wherein the metal layer is provided with a grounding point, and the metal layer is grounded through the grounding point.

The electrochromic module comprises a metal layer, a first dielectric layer, a first conducting layer, a color-changing material layer and a second conducting layer which are sequentially stacked, wherein when an antenna radiator is arranged at least one end part of the metal layer, the metal layer in the electrochromic module can be used for isolating the first conducting layer and the second conducting layer, so that the first conducting layer and the second conducting layer can be prevented from generating an energy absorption effect due to large sheet resistance to cause the reduction of the antenna performance of the peripheral antenna radiator, and in addition, induced current generated on the metal layer can be led into the ground end by grounding the metal layer, so that the situation that the induced current (opposite to the current on the antenna radiator) on the metal layer can inhibit the radiation formation of the antenna radiator at the corresponding position is avoided. Through add the metal level that ground connection set up in electrochromic module, can guarantee under the not influenced prerequisite of the radiation performance of antenna radiator, can also further reduce the interval of electrochromic module and frame to further improve the outward appearance decorative effect of backshell, thereby improve the outward appearance expressive force of backshell.

A cover plate assembly comprising:

the electrochromic module comprises a metal layer, a first dielectric layer, a first conducting layer, a color-changing material layer and a second conducting layer which are sequentially stacked, wherein the metal layer is provided with a grounding point for grounding;

and the inner side of the rear cover is connected with the second conductive layer.

An electronic device, comprising:

the antenna comprises a middle frame, a radiating body and a radiating body, wherein the middle frame is provided with an antenna radiating body; and

the cover plate assembly as described above, wherein the rear cover is connected to the middle frame, and the electrochromic module is disposed at an interval from the middle frame.

In the cover plate assembly and the electronic device, when the cover plate assembly is applied to an electronic device including a middle frame (for example, an antenna radiator for radiating a radio frequency signal is arranged on the middle frame), an electrochromic module in the cover plate assembly can be arranged in a color changing area of a rear cover in an attaching manner, wherein a metal layer in the electrochromic module can isolate absorption effects of a first conductive layer and a second conductive layer, so that the situation that the antenna performance of a peripheral antenna radiator is reduced due to the absorption effect of the conductive layers can be avoided, and in addition, induced current generated on the metal layer can be led into the ground end by grounding the metal layer, so that the situation that the induced current (opposite to the current on the antenna radiator) on the metal layer inhibits the radiation formation of the antenna radiator at a corresponding position can be avoided. Through add the metal level that ground connection set up in electrochromic module, can guarantee under the not influenced prerequisite of the radiation performance of antenna radiator, can also further reduce the interval between electrochromic module and the frame to further improve the outward appearance decorative effect of backshell, thereby improve the outward appearance expressive force of backshell.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of an electronic device in one embodiment;

FIG. 2 is a left side view of the electronic device shown in FIG. 1;

FIG. 3 is a rear view of the electronic device shown in FIG. 1;

FIG. 4 is a rear view of a cover plate assembly in one embodiment;

FIG. 5 is a cross-sectional view of an electrochromic module in one embodiment;

FIG. 6 is a cross-sectional view of an electrochromic module in another embodiment;

FIG. 7 is a top view of a metal layer in an electrochromic module in one embodiment;

FIG. 8 is a top view of a metal layer in an electrochromic module, in accordance with another embodiment;

FIG. 9 is a top view of a metal layer in an electrochromic module according to another embodiment;

FIG. 10 is a cross-sectional view of an electrochromic module in yet another embodiment;

fig. 11 is a schematic structural diagram of an electronic device in one embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying 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", "top", "bottom", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present 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 according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean 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.

The electrochromic module related to the embodiment of the present application may be applied to an electronic device having a wireless communication function, and the electronic device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing devices connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

Referring to fig. 1-3, in an embodiment, an electronic device is taken as a mobile phone for illustration. The electronic device includes a display screen assembly 11, a bezel 12, and a cover assembly 13. The Display screen assembly 11 includes a Display screen 111, the Display screen 111 may be an OLED (Organic Light-Emitting Diode) screen or an LCD (Liquid Crystal Display) screen, and the Display screen 11 may be configured to Display information and provide an interactive interface for a user. The shape of the display screen 111 may be a rectangle or a corner rectangle, and the corner rectangle may also be referred to as a rounded rectangle, that is, four corners of the rectangle are in arc transition, and four sides of the rectangle are approximately straight line segments.

The frame 12 may be made of a metal material such as aluminum alloy or magnesium alloy or stainless steel, and the frame 12 is disposed at the periphery of the display screen assembly 11 for supporting and protecting the display screen assembly 11. Bezel 12 may further extend into the electronic device to form a midplane, and the integrally formed midplane and bezel 12 are sometimes referred to as a midplane. The display screen assembly 11 may be fixedly connected to the frame 12 or the middle plate by using a dispensing process.

The cover plate assembly 13 is disposed on a side of the displayable region opposite to the display screen 111 and connected to the frame 12. Further, the display screen assembly 11 and the cover plate assembly 13 are respectively located on two opposite sides of the middle plate. Referring to fig. 5, a mounting space may be formed between the cover plate assembly 13 and the display screen 111 for mounting electronic components such as a battery, a main board, a camera module, etc. of the electronic device. The mainboard can integrate electronic components such as a processor, a storage unit, a power management module, a baseband chip and the like of the electronic equipment. The mainboard is arranged on one side of the displayable area of the back display screen 111, and the mainboard can be fixedly connected with the middle frame through structural members such as screws. The main Board may be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). On this substrate, a part of radio frequency circuits for processing radio frequency signals may be integrated, and a controller or the like capable of controlling the operation of the electronic device may be integrated. The radio frequency circuit includes, but is not limited to, an antenna assembly, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the radio frequency circuitry may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), general Packet Radio Service (GPRS), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), long Term Evolution (LTE)), e-mail, short Messaging Service (SMS), and the like.

Referring to fig. 3, the middle frame 12 is substantially a rectangular frame, and includes a top frame 123 and a bottom frame 125, which are disposed opposite to each other, and a first side frame 127 and a second side frame 129 connected between the top frame 123 and the bottom frame 125, wherein the first side frame 127 and the second side frame 129 are disposed opposite to each other, and the top frame 123, the first side frame 127, the bottom frame 125, and the second side frame 129 are sequentially connected end to end and located on the periphery of the middle plate. The specific connection between the frames can be right-angle connection or circular arc transition connection. Further, when the frame is a metal frame, the frame 12 may be provided with an antenna radiator for radiating radio frequency signals of different frequency bands. Specifically, the antenna radiator may be formed by a slit formed in the frame.

The cover plate assembly 13 includes a rear cover 131 and an electrochromic module 132. The electrochromic module 132 is disposed inside the rear cover 131. Wherein the inner side can be understood as the side of the cover plate assembly 13 facing the displayable area of the display screen 111. The rear cover 131 is used to form an outer contour of the electronic device 10, and may serve as a rear case of the electronic device 10. The rear cover 131 may be integrally formed. In the molding process of the rear cover 131, structures such as a rear camera hole, a fingerprint recognition module, an antenna assembly mounting hole 15, etc. may be formed on the rear cover 131. The rear cover 131 may be made of a transparent material, for example, the rear cover 131 may be a plastic transparent rear cover 131, a glass transparent rear cover 131, or the like.

Referring to fig. 4 and 5, the rear cover 131 includes a first region 1311 and a second region 1312, the second region 1312 being disposed along a circumference of the first region 1311. The second region 1312 may enable the electrochromic module 132 to be disposed at a distance from the middle frame 12 of the electronic device, so as to achieve an insulating arrangement between the electrochromic module 132 and the middle frame 12. The peripheral edge of the rear cover 131 is connected to the middle frame 12.

The electrochromic module 132 includes a metal layer 1321, a first dielectric layer 1322, a first conductive layer 1323, a color-changing material layer 1324, and a second conductive layer 1325 stacked in sequence. The electrochromic module 132 is disposed in a first area 1311 of the rear cover 131, and specifically, the second conductive layer 1325 is located on a side of the first area 1311 close to the electrochromic module 132. When the color of the electrochromic module 132 is changed, the color of the first region 1311 of the rear cover 131 can also be changed, and the first region 1311 can be used as an electrochromic region of an electronic device, so that an appearance decoration effect of the rear case can be improved, thereby improving appearance expressive force of the rear case.

It should be noted that, in the embodiment of the present application, the electrochromic module 132 may cover all or part of the first region 1311. For example, when the electrochromic module 132 partially covers the first area, the electrochromic module 132 may be disposed in a partial area of the first area 1311, for example, in a middle area of the first area, or in an area other than the camera module area.

The first dielectric layer 1322 may be a light-transmitting dielectric layer. The first medium layer 1322 may be a glass medium layer or a resin plastic medium layer. Specifically, the first dielectric layer 1322 may be made of polyester resin (PET or PEIT), polymethyl methacrylate (PMMA), polycarbonate PC (PC), polyimide (PI), or the like, the first conductive layer 1323 and the second conductive layer 1325 may be made of a transparent conductive material, further, the first dielectric layer 1322 may be a flexible transparent dielectric layer, so that the entire structure of the electrochromic module 132 is in a flexible and bendable structural form, and the first dielectric layer 1322 plays a role in supporting and protecting the internal structure.

In one embodiment, the first dielectric layer 1322 may further include a color auxiliary layer for assisting a color changing functional layer formed by the first conductive layer 1323, the color changing material layer 1324 and the second conductive layer 1325 for implementing a color changing function.

The first conductive layer 1323 and the second conductive layer 1325 may be transparent conductive layers. The first conductive layer 1323 and the second conductive layer 1325 may be made of Indium Tin Oxide (ITO), zinc aluminum oxide (AZO), tin oxide doped with Fluorine (FTO), or a graphene film.

Referring to fig. 6, the color-changing material layer 1324 includes an electrochromic layer 13241, a dielectric layer 13242, and an ion storage layer 13243 interposed between the first conductive layer 1323 and the second conductive layer 1325 and stacked in this order. Alternatively, the material of the electrochromic layer 13241 may include an inorganic electrochromic material (e.g., a transition metal oxide or a derivative thereof such as tungsten trioxide), an organic electrochromic material (e.g., a polythiophene and a derivative thereof, an viologen, a tetrathiafulvalene, a metal phthalocyanine-based compound, or the like), and the like.

Specifically, by applying a certain voltage between the first conductive layer 1323 and the second conductive layer 1325, the electrochromic material in the electrochromic layer 13241 with the active material undergoes an oxidation-reduction reaction under the action of the voltage, so that electrons are lost, the energy level of the electrochromic material is changed, and the color is changed; the electrolyte layer is made of a special conductive material, such as a solution containing lithium perchlorate, sodium perchlorate and the like or a solid electrolyte material; the ion storage layer can store corresponding counter ions when the electrochromic material undergoes an oxidation-reduction reaction, and the charge balance of the whole system is kept. Illustratively, the electrochromic layer 13241 material may employ an anodically oxidized color changing material, and the ion storage layer may employ a cathodically reduced color changing material. Accordingly, the color changing function of the electrochromic layer 13241 can be realized when the first and second

conductive layers

1323 and 1325 are energized, so that the color of the rear cover 131 can be adjusted according to the user's needs.

A metal layer 1321 is disposed on a side of the first dielectric layer 1322 facing away from the first conductive layer 1323. At least one side of the metal layer 1321 may be used to provide an antenna radiator. When the antenna radiator is disposed on at least one side of the electrochromic module 132, the metal layer 1321 in the electrochromic module 132 may be used to isolate the first conductive layer 1323 and the second conductive layer 1325 from absorbing electromagnetic waves generated by the antenna radiator, so that it is possible to prevent the first conductive layer 1323 and the second conductive layer 1325 from generating an energy absorption effect due to a large sheet resistance, which may result in a decrease in antenna performance of the peripheral antenna radiator. In addition, the metal layer is grounded, so that induced current generated on the metal layer can be introduced to the ground end, and the situation that the induced current (opposite to the current on the antenna radiator) on the metal layer inhibits the radiation formation of the antenna radiator at the corresponding position can be avoided. Through the metal layer 1321 that sets up ground connection setting in electrochromic module 132, can guarantee under the not influenced prerequisite of the radiation performance of antenna radiator, can also further reduce the interval between electrochromic module 132 and frame to further improve the outward appearance decorative effect of backshell, thereby improve the outward appearance expressive force of backshell.

In the embodiment of the present application, when the cover plate assembly 13 is applied to an electronic device including the middle frame 12 (for example, an antenna radiator for radiating a radio frequency signal is disposed on the middle frame 12), the electrochromic module 132 in the cover plate assembly 13 may be disposed in close contact with the first region 1311 of the rear cover 131, wherein the metal layer 1321 in the electrochromic module 132 may isolate absorption effects of the first conductive layer 1323 and the second conductive layer 1325, so as to avoid a decrease in antenna performance of the peripheral antenna radiator due to the absorption effect of the conductive layers. By adding the metal layer 1321 in the electrochromic module 132, the space (for example, the second region 1312) between the electrochromic module 132 and the middle frame 12 in the second region can be further reduced on the premise that the radiation performance of the antenna radiator is not affected, so as to further improve the appearance decoration effect of the rear housing, thereby improving the appearance expressive force of the rear housing.

With continued reference to fig. 2, in one embodiment, when the cover plate assembly 13 is applied to an electronic device including the middle frame 12, the end surfaces of the antenna radiators at the same relative positions are located on the side of the first dielectric layer 1322 away from the first conductive layer 1323 in the thickness direction of the electronic device.

Further, in the thickness direction of the electronic device, the end surfaces of the antenna radiators are located on the side of the metal layer 1321 far away from the first dielectric layer 1322 at the same relative position. And the projections of the antenna radiators at the same relative position in the thickness direction are overlapped. The end surface of the antenna radiator may be understood as a side surface of the middle frame 12 disposed adjacent to the cover plate 131, the end surface of the antenna radiator being disposed perpendicular to the thickness direction.

In this embodiment, the end surfaces of the antenna radiators at the same relative positions are located on the side of the first dielectric layer 1322 away from the first conductive layer 1323 in the thickness direction of the electronic device, so that the distance between the antenna radiators and the metal layer 1321 can be increased in the thickness direction of the electronic device, and the influence of the electrochromic module 132 on the radiation performance of the antenna radiators can be further reduced.

It should be noted that, at the same position, it can be understood that, in the thickness direction of the electronic device, projections of the antenna radiator, the metal layer 1321, and the first dielectric layer 1322, which are located at the same relative position, overlap in the thickness direction.

In one embodiment, the material of the metal layer 1321 may be copper foil, conductive silver paste, conductive metal compound, or the like. The conductive metal compound may include a conductive gold paste or a conductive metal compound formed by mixing at least two conductive metal materials. The thickness of the conductive metal compound formed by the conductive gold paste or the mixture of at least two conductive metal materials can be smaller than that of the copper foil, so that the thickness of the electrochromic module 132 can be greatly reduced, the space occupied by the electrochromic module 132 is saved, and the miniaturization design of a product is facilitated. In the embodiment of the present application, the material of the metal layer 1321 is not limited to the above example, and may be another metal material.

Referring to fig. 7, in one embodiment, a plurality of grounding points (e.g., G1, G2, G3, G4) are disposed on the metal layer 1321 of the electrochromic module 132, and the metal layer 1321 is grounded through the grounding points.

Further, the motherboard in the electronic device may be provided with a ground layer, wherein the ground layer may provide a reference ground for the metal layer 1321, that is, the ground point of the metal layer 1321 may be electrically connected to the ground layer on the motherboard by a conductive wire, so as to guide the induced current generated on the metal layer 1321 to the ground layer of the motherboard.

In the embodiment of the present application, a plurality of grounding points for grounding are disposed on the metal layer 1321, so that the induced current generated on the metal layer 1321 can be guided to the ground, and thus, the occurrence of suppression of radiation formation of the antenna radiator at the corresponding position due to the size of the metal layer 1321 and the induced current (in the opposite direction to the current on the antenna radiator) on the metal layer 1321 can be avoided.

The positions and the number of the ground points on the metal layer 1321 may be set according to the shape and the size of the metal layer 1321 and the distribution state of the antenna radiator formed on the middle frame 12. The metal layer 1321 may have a rectangular, arc-corner rectangular, circular, oval, or irregular shape (e.g., L-shaped, F-shaped, etc.).

In one embodiment, the number of the grounding points disposed on the metal layer 1321 is multiple, and the multiple grounding points may be uniformly distributed on the metal layer 1321 or non-uniformly distributed on the metal layer 1321. With continued reference to fig. 7, in one embodiment, an orthographic projection of the metal layer 1321 on a reference plane is completely overlapped with an orthographic projection of the target conducting layer 1323 on the reference plane, wherein the reference plane is a plane perpendicular to a thickness direction of the cover plate assembly. Wherein the target conductive layer is the first conductive layer 1323 or the second conductive layer 1325. Further, the metal layer 1321 may be located on a side of the first dielectric layer 1322 away from the first conductive layer 1323. The outer edge of the metal layer 1321 may be substantially flush with the outer edge of the first conductive layer 1323, that is, the outer edge of the metal layer 1321 may be substantially flush with the outer edge of the first region 1311, so that the metal layer 1321 may be prevented from extending into a spaced region, ensuring that there is sufficient antenna headroom, and reducing the impact on the performance of the antenna radiator.

In the embodiment of the present application, the grounding points distributed on the metal layer 1321 will be described by taking the shape of the metal layer 1321 as a rectangle or an arc-corner rectangle as an example.

The number of the grounding points is four, and the four grounding points G1, G2, G3, G4 are correspondingly distributed in four corner regions of the metal layer 1321. By uniformly arranging the four grounding points in the four vertex angle areas of the rectangle or the rounded rectangle, the induced current generated on the metal layer 1321 can be uniformly and quickly guided to the ground end, so as to avoid influencing the performance of the antenna radiator.

Referring to fig. 8, further, the edge region includes a first edge and a third edge that are opposite to each other, and a second edge and a fourth edge that are connected between the first edge and the third edge, and the second edge and the fourth edge are opposite to each other. For example, nine grounding points G1, G2, G3, G4, G5, G6, G7, G8, G9 may be provided, wherein four grounding points G1, G2, G3, G4 are correspondingly distributed in four corner regions of the metal layer 1321, and the other four grounding points G5, G6, G7, G8 are respectively provided at the center positions of the first edge, the second edge, the third edge, and the fourth edge, and the remaining one grounding point G9 may be provided at the geometric center position of the metal layer 1321.

In this embodiment, by providing nine grounding points, the induced current generated on the metal layer 1321 can be uniformly and quickly guided to the ground end, so as to avoid forming a cavity and affecting the performance of the antenna radiator.

In one embodiment, the orthographic projection of the metal layer 1321 on the reference plane partially overlaps the orthographic projection of the target conductive layer 1323 on the reference plane. Illustratively, the metal layer 1321 may be attached to a partial area of the first region 1311 of the back cover 131, such as a middle area of the back cover.

Referring to fig. 9, in one embodiment, specifically, the metal layer 1321 includes a first metal sheet and a second metal sheet 132b disposed at an interval from the first metal sheet 132a, wherein the area of the second metal sheet 132b is smaller than that of the first metal sheet 132a, and a ground point for ground disposition is disposed on the first metal sheet 132a.

Further, the length L of the second metal sheet 132b may be less than a quarter of the wavelength of the operating frequency of the antenna radiator disposed close to the metal sheet, so that an induced current with the same frequency (opposite to the current on the antenna radiator close to the metal sheet) cannot be generated on the second metal sheet 132b, and the influence of the induced current on the metal sheet on the performance of the antenna radiator can be further reduced. The length dimension may be understood as being in the extending direction of the second metal sheet 132b, i.e. the extending direction is parallel to the extending direction of the antenna radiator which is arranged close to the metal sheet.

In the embodiment of the present application, by disposing two metal sheets, wherein the first metal sheet 132a with a large size is disposed with a grounding point, the induced current generated on the first metal sheet 132a can be guided to the ground, so as to reduce the influence on the performance of the antenna radiator. The first metal sheet 132a and the second metal sheet 132b can further improve the product performance of the rear cover 131 of the electronic device while isolating the absorption effect of the conductive layers in the electrochromic module 132.

In one embodiment, the number of the first metal sheets 132a may be multiple, and the number of the second metal sheets 132b may also be multiple. That is, the metal layer 1321 may include one first metal sheet 132a and a plurality of second metal sheets 132b, may include a plurality of first metal sheets 132a and one second metal sheet 132b, and may further include a plurality of first metal sheets 132a and a plurality of second metal sheets 132b. In the embodiment of the present application, when the number of the first metal pieces 132a is plural, the shapes and areas of the plural first metal pieces 132a may be the same or different. Accordingly, when the number of the second metal pieces 132b is plural, the shapes and areas of the plural second metal pieces 132b may be the same or different.

In one embodiment, when the number of the second metal pieces 132b is multiple, a grounding point may be further disposed on at least one of the second metal pieces 132b, so as to further guide the induced current generated on the second metal piece 131a to the ground.

In one embodiment, any two adjacent metal sheets are arranged at intervals. And a first distance between two adjacent first metal sheets is greater than or equal to a second distance between two adjacent second metal sheets.

With continued reference to fig. 9, for example, the number of the first metal sheets 132a and the second metal sheets 132b may be two. It should be noted that, in the embodiment of the present application, the size and the relative position of the first metal sheet 132a and the second metal sheet 132b, and the number and the positions of the grounding points G disposed on the first metal sheet 132a can be set according to the operating frequency band of the antenna radiator disposed on the middle frame 12 and the size of the conductive layer in the electrochromic module 132, so as to ensure that the absorption effect on the metal layer 1321 in order to isolate the conductive layers in the electrochromic module 132 can be ensured, and at the same time, the radiation performance of the antenna radiator and the product expressive force of the rear cover 131 of the electronic device can be further improved. In one embodiment, the middle frame 12 may be formed by slotting multiple antenna radiators. Specifically, the middle frame 12 is provided with a middle-high frequency antenna radiator for radiating middle-high frequency signals and a low frequency antenna radiator for radiating low frequency signals; the first metal sheet 132a is disposed near the medium-high frequency antenna radiator, and the second metal sheet 132b is disposed near the low frequency antenna.

Referring to fig. 9, in detail, a first radiator F1 for radiating the medium-high frequency signal is disposed on the top frame 123, a second radiator F2 for radiating the low-frequency signal is disposed on the first side frame 127, and a third radiator F3 for radiating the medium-high frequency signal and a fourth radiator F4 for radiating the low-frequency signal are disposed on the bottom frame 125. The medium-high frequency signal may include an intermediate frequency signal and a high-frequency signal in a 4G Long Term Evolution (LTE) signal and/or a 5G New Radio (NR) signal, for example, a medium-high frequency signal in a frequency band such as B1 (N1), B40 (N40), and the like. The low frequency signal may also include a low frequency signal of the 4GLTE signal and/or the 5G NR signal, for example, a B5 (N5), B8 (N8), etc. frequency band.

Referring to fig. 9, the metal layer 1321 includes two first metal sheets 132a and two second metal sheets 132b, where one first metal sheet 132a is disposed near the first radiator F1, the other first metal sheet 132a is disposed near the third radiator F3, and the two second radiators F2 are disposed near the first side frame.

Further, the first antenna radiator F1 disposed at the top frame 123 for radiating the if and hf signals may be disposed at a position close to the top frame 123, and a first metal sheet 132a may be disposed at a position close to the top frame 123, wherein a length of the first metal sheet 132a may extend to an edge of the first region 1311. Specifically, the first metal piece 132a is shaped like an "L", and a grounding point G provided on the first metal piece 132a may be provided near the second side frame 129 and near the peripheral area of the rear camera. In addition, the third antenna radiator F3 disposed at the bottom bezel 125 radiates the middle and high frequency signals and the fourth radiator F4 for radiating the low frequency signal, and another first metal piece 132a may be disposed at a position close to the bottom bezel. Wherein the length dimension of the first metal sheet 132a can extend to the edge of the first region 1311. Specifically, the first metal piece 132a may have a rectangular shape, and the ground point G disposed on the first metal piece 132a may be disposed near the bottom frame 125. Wherein, the distance D1 between the two first metal sheets 132a is greater than or equal to 2 mm.

The second antenna radiator F2 disposed on the first side frame 127 is configured to radiate a low-frequency signal, and two second metal sheets 132b may be disposed at a position close to the first side frame 127, so as to optimize performance of the antenna radiator through the second metal sheets 132b of the small fragments. Specifically, the two second metal sheets 132b are suspended and not grounded, wherein the distance D2 between the two second metal sheets 132b is greater than or equal to 2 mm. Further, the second metal sheet 132b may have a rectangular shape, and when the electronic device is a mobile phone, the size of the second metal sheet 132b may be 25mm (length size) by 14mm (width size). It should be noted that the space between the metal sheets, and the shape and size of the metal sheets are limited to the above examples, and can be adjusted adaptively according to actual requirements.

Based on the electronic device shown in fig. 9, the active performance of the antenna radiator can be tested, and the specific test results are shown in table 1.

Table 1 shows that when the metal layer 1321 is added to the electrochromic module 132 and the metal layer 1321 is not set, the radiation power of the antenna radiator decreases in four frequency bands, namely, LTE B1, LTEB40, LTE B5, and LTE B8.

The original electrochromic performance degradation amount is the Total Radiated Power (TRP) degradation of the antenna performance by the original headroom electrochromic module 132 (not provided with the metal layer 1321). The performance degradation amount of the present application is the total radiation power of the electrochromic module 132 in the embodiment of the present application to the performance of the antenna. The performance improvement amount is a difference between the second radiation power reduction amplitude and the first radiation power reduction amplitude.

As can be seen from table 1, by disposing the metal layer 1321 below the conductive layer and grounding the metal layer 1321, the influence of the conductive layer material in the electrochromic module 132 on the performance of the antenna radiator can be reduced, and at the same time, the influence of the metal layer 1321 on the performance of the antenna radiator can be reduced, so that the radiation performance of the antenna radiator can be improved, and the size of the second region 1312 between the antenna radiator and the first region 1311 can be reduced, so as to further improve the product performance of the rear cover 131. That is, the overall radiation performance of the antenna radiator can be improved by disposing the metal layer 1321 under the conductive layer and disposing the metal layer 1321 to be grounded under the conductive layer while maintaining the same width of the second region 1312.

Referring to fig. 10, in one embodiment, the electrochromic module 132 further includes a second dielectric layer 1326 disposed between the second conductive layer 1325 and the cover plate. The second dielectric layer 1326 may be a light-transmitting dielectric layer, and specifically, the second dielectric layer 1326 may be a glass dielectric layer or a resin plastic dielectric layer. The second dielectric layer 1326 can also protect the color-changing material layer 1324 and the conductive layers. Further, the second dielectric layer 1326 may be a flexible transparent dielectric layer, so that the whole structure of the electrochromic module 132 is flexible and bendable.

As shown in fig. 11, further taking the electronic device as a mobile phone 10 as an example, specifically, as shown in fig. 11, the mobile phone 10 may include a memory 21 (which optionally includes one or more computer-readable storage media), a processor 22, a control circuit 23, and an input/output (I/O) subsystem 24. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will appreciate that the handset 10 shown in fig. 11 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. The various components shown in fig. 11 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.

The memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Illustratively, the software components stored in memory 21 include an operating system 211, a communications module (or set of instructions) 212, a Global Positioning System (GPS) module (or set of instructions) 213, and the like.

The processor 22 and other control circuitry 23 may be used to control the operation of the handset 10. The processor 22 may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.

The control circuit 23 is coupled to the electrochromic module 132 of the cover plate assembly 13, and the control circuit 23 is configured to receive a control instruction, where the control instruction is used to control the electrochromic module 132 to change color. Specifically, the control circuit 23 is configured to receive a control instruction input through an input/output (I/O) subsystem 24, and control the operating state of the electrochromic module 132 according to the control instruction; the working state of the electrochromic module 132 includes controlling and changing the voltage or current signal state thereof to achieve the purpose of controlling the color changing state of the electrochromic module 132. Specifically, the control circuit 23 controls the electrochromic module 132 to change the transparent state, and the electronic device can exhibit a color-changing appearance effect by combining structures such as an appearance film and a substrate color layer.

Wherein the I/O subsystem 24 couples input/output peripheral devices on the handset 10, such as a keypad and other input control devices, to the peripheral interface 23. The I/O subsystem 24 optionally includes a touch screen, buttons, tone generators, accelerometers (motion sensors), ambient and other sensors, light emitting diodes and other status indicators, data ports, and the like. Illustratively, a user may control the operation of the handset 10 by supplying commands through the I/O subsystem 24, and may receive status information and other output from the handset 10 using the output resources of the I/O subsystem 24. For example, a user pressing button 241 may turn the phone on or off.

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

Claims

1. An electrochromic module, comprising: a metal layer, a first dielectric layer, a first conductive layer, a color-changing material layer, and a second conductive layer sequentially stacked,

at least one side of the metal layer is used for arranging an antenna radiating body and is arranged at intervals with the antenna radiating body, wherein the metal layer is provided with a grounding point, and the metal layer is grounded through the grounding point.

2. The electrochromic module of claim 1, wherein the number of grounding points on the metal layer is plural.

3. The electrochromic module of claim 1, wherein the metal layer is a copper foil layer.

4. A cover plate assembly, comprising:

5. The cover plate assembly of claim 4, wherein the number of the grounding points is plural, and the metal layer is grounded through the grounding points.

6. The cover plate assembly according to claim 4, wherein an orthographic projection of the metal layer on a reference plane, which is a plane perpendicular to a thickness direction of the cover plate assembly, and an orthographic projection of a target conductive layer on the reference plane, which is the first conductive layer or the second conductive layer, are all or partially overlapped.

7. The cover plate assembly of claim 6, wherein when the orthographic projection of the metal layer on the reference plane and the orthographic projection of the target conductive layer on the reference plane all overlap, the number of the grounding points is plural, and the plurality of grounding points are distributed on the edge area of the metal layer.

8. The cover plate assembly of claim 7, wherein the metal layer is rectangular or rectangular with arc corners, and wherein the number of the grounding points is four, and four of the grounding points are correspondingly distributed at four corner regions of the metal layer.

9. The cover plate assembly of claim 8, wherein the edge region includes first and third oppositely disposed edges and second and fourth edges connected between the first and third edges, the second and fourth edges being oppositely disposed, and wherein a plurality of the grounding points are further disposed at the center positions of the first, second, third and fourth edges and the geometric center position of the metal layer, respectively.

10. The decking assembly defined in claim 4 wherein the metal layer is a copper foil layer.

11. The cover plate assembly of claim 4, wherein the electrochromic module further comprises a second dielectric layer disposed between the second conductive layer and the cover plate.

12. An electronic device, comprising:

the lid assembly of any one of claims 4-11, wherein the rear cover is coupled to the center frame and the electrochromic module is spaced from the center frame.

13. The electronic device of claim 12, wherein the end surface of the antenna radiator is located on a side of the metal layer away from the first dielectric layer at a same position in a thickness direction of the electronic device.

14. The electronic device according to claim 12, wherein when an orthographic projection of the metal layer on a reference plane partially overlaps an orthographic projection of the target conductive layer on the reference plane, the metal layer comprises a first metal piece and a second metal piece spaced apart from the first metal piece, wherein the second metal piece has a smaller area than the first metal piece, and wherein a ground point for ground setting is provided on the first metal piece.

15. The electronic device of claim 14, wherein the first metal sheet is plural in number, and/or the second metal sheet is plural in number.

16. The electronic device of claim 14, wherein at least one of the second metal pieces is provided with a ground point.

17. The electronic device of claim 14, wherein a first spacing between two adjacent first metal sheets is greater than or equal to a second spacing between two adjacent second metal sheets.

18. The electronic device according to claim 14, wherein a medium-high frequency antenna radiator for radiating medium-high frequency signals and a low frequency antenna radiator for radiating low frequency signals are provided on the middle frame; the first metal sheet is close to the medium-high frequency antenna radiator, and the second metal sheet is close to the low frequency antenna.

19. The electronic device of claim 18, wherein the middle frame comprises a top frame and a bottom frame which are arranged oppositely, and a first side frame and a second side frame which are connected between the top frame and the bottom frame, and the first side frame and the second side frame are arranged oppositely; wherein the content of the first and second substances,

a first radiator for radiating the medium-high frequency signal is arranged on the top frame, a second radiator for radiating the low-frequency signal is arranged on the first side frame, a third radiator for radiating the medium-high frequency signal and a fourth radiator for radiating the low-frequency signal are arranged on the bottom frame;

the metal level includes two first sheetmetal and two second sheetmetals, wherein, one first sheetmetal is close to first irradiator setting, another first sheetmetal is close to the third irradiator setting, two the second irradiator is close to first side frame sets up.