CN115704979A - Electrochromic modules, cover assemblies and electronics - Google Patents

Abstract

The present application relates to an electrochromic module, a cover assembly and electronic equipment. The electrochromic module includes: a metal layer, a first dielectric layer, a first conductive layer, a color-changing material layer, and a second conductive layer stacked in sequence. , wherein at least one side of the metal layer is used for setting an antenna radiator and is spaced apart from the antenna radiator, wherein the metal layer is grounded. Wherein, when at least one side of the metal layer is provided with an antenna radiator, the metal layer in the electrochromic module can be used to isolate the electromagnetic waves generated by the first conductive layer and the second conductive layer to the antenna radiator The absorption can also lead the induced current generated on the metal layer to the ground terminal, which can further reduce the distance between the electrochromic module and the middle frame under the premise of ensuring that the radiation performance of the antenna radiator is not affected , so as to further improve the appearance decoration effect of the back shell, thereby improving the appearance expressiveness of the back shell.

Description

Electrochromic modules, cover assemblies and electronics

technical field

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

Background technique

Electrochromic film is a kind of color-changing blocking film commonly used in the exterior glass of buildings and car rearview mirrors. The appearance design of electronic equipment (such as mobile phones, tablet computers, smart watches, etc.) is becoming similar, and the electrochromic film can bring new features of changing the appearance color of electronic equipment. Taking the mobile phone as an example, the broken-slit antenna is mainly installed on the frame of the mobile phone case. When the mobile phone case uses an electrochromic diaphragm, the conductive film layer in the electrochromic diaphragm will produce energy absorption, causing the surrounding Degradation of antenna performance.

Contents of the invention

The embodiment of the present application provides an electrochromic module, a cover plate assembly and an electronic device, which can improve the appearance decoration effect of the rear case on the premise of ensuring that the radiation performance of the antenna radiator is not affected, thereby improving the The appearance of the shell is expressive.

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, wherein,

At least one side of the metal layer is used for setting an antenna radiator and is spaced apart from the antenna radiator, wherein a grounding point is provided on the metal layer, and the metal layer is grounded through the grounding point.

The above-mentioned electrochromic module includes a metal layer, a first dielectric layer, a first conductive layer, a color-changing material layer, and a second conductive layer stacked in sequence, wherein, when at least one end of the metal layer is provided with an antenna radiator, The metal layer in the electrochromic module can be used to isolate the first conductive layer and the second conductive layer from absorbing the electromagnetic wave generated by the antenna radiator, so that the first conductive layer and the second conductive layer can be avoided Due to the large square resistance of the conductive layer, energy absorption will occur, resulting in the degradation of the antenna performance of the surrounding antenna radiator. In addition, by setting the metal layer to the ground, the induced current generated on the metal layer can be introduced to the ground. In this way, the situation that the induced current on the metal layer (which is opposite to the current on the antenna radiator) inhibits the formation of radiation of the antenna radiator at the corresponding position can be avoided. By adding a metal layer for grounding in the electrochromic module, the distance between the electrochromic module and the frame can be further reduced on the premise of ensuring that the radiation performance of the antenna radiator is not affected, so as to further improve the The decorative effect of the appearance of the shell, thereby improving the appearance of the rear shell.

A cover assembly, comprising:

The electrochromic module includes a metal layer, a first dielectric layer, a first conductive layer, a color-changing material layer, and a second conductive layer that are sequentially stacked, wherein the metal layer is provided with a grounding point for grounding;

The back cover, the inner side of the back cover is connected to the second conductive layer.

An electronic device comprising:

a middle frame, an antenna radiator is arranged on the middle frame; and

As in the aforementioned cover plate assembly, wherein the rear cover is connected to the middle frame, and the electrochromic module is spaced apart from the middle frame.

In the above-mentioned cover plate assembly and electronic equipment, when the cover plate assembly is applied to electronic equipment including a middle frame (for example, an antenna radiator for radiating radio frequency signals is arranged on the middle frame), the electrochromic color in the cover plate assembly The module can be attached to the discoloration area of the back cover. The metal layer in the electrochromic module can isolate the absorption effect of the first conductive layer and the second conductive layer, thereby avoiding the absorption effect caused by the conductive layer. In addition, by grounding the metal layer, the induced current generated on the metal layer can be introduced to the ground, so that the induced current on the metal layer (with the antenna radiator) can be avoided. The situation that the radiation formation of the antenna radiator at the corresponding position is inhibited occurs. By adding a metal layer for grounding in the electrochromic module, the distance between the electrochromic module and the frame can be further reduced on the premise of ensuring that the radiation performance of the antenna radiator is not affected, so as to further Improve the appearance decoration effect of the back shell, thereby improving the appearance expressiveness of the back shell.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the front view of electronic equipment in an embodiment;

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

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

Figure 4 is a rear view of the cover assembly in one embodiment;

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

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

Figure 7 is a top view of the metal layer in the electrochromic module in one embodiment;

Figure 8 is a top view of the metal layer in the electrochromic module in another embodiment;

Fig. 9 is a top view of the metal layer in the electrochromic module in another embodiment;

Figure 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 an embodiment.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "top", "bottom", "axial", "radial", "circumferential" etc. is based on the orientation or position shown in the drawings The relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. 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. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiment.

The electrochromic module involved in the embodiment of the present application can be applied to an electronic device with a wireless communication function, and the electronic device can 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 (User Equipment, UE) (for example, mobile phone), mobile station (MobileStation, MS) and so on. For convenience of description, the devices mentioned above are collectively referred to as electronic devices.

Referring to FIG. 1-FIG. 3 , in an embodiment, the electronic device is a mobile phone as an example for description. The electronic device includes a display screen assembly 11 , a frame 12 and a cover assembly 13 . The display screen assembly 11 includes a display screen 111. The display screen 111 can be an OLED (Organic Light-Emitting Diode, organic light-emitting diode) screen, or an LCD (Liquid Crystal Display, liquid crystal display) screen. The display screen 11 can be used to display information and provide The user provides an interactive interface. The shape of the display screen 111 may be a rectangle or a rectangle with arc corners. The rectangle with arc corners may also be called a round corner rectangle sometimes, that is, the four corners of the rectangle are transitioned by arcs, and the four sides of the rectangle are approximately straight segments.

The frame 12 can be made of metal materials such as aluminum alloy or magnesium alloy or stainless steel, and the frame 12 is arranged on the periphery of the display screen assembly 11 for supporting and protecting the display screen assembly 11 . The frame 12 may further extend to the inside of the electronic device to form a middle board, and the integrally formed middle board and frame 12 are sometimes also referred to as a middle frame. The display screen assembly 11 can be fixedly connected to the frame 12 or the middle board by using processes such as dispensing glue.

The cover assembly 13 is disposed on a side facing away from the displayable area of the display screen 111 and connected to the frame 12 . Further, the display screen component 11 and the cover plate component 13 are respectively located on two opposite sides of the middle plate. Referring to FIG. 5 at the same time, an installation space may be formed between the cover plate assembly 13 and the display screen 111 for installing electronic components such as batteries, motherboards, and camera modules of electronic equipment. Wherein, the motherboard can integrate electronic components such as processors, storage units, power management modules, and baseband chips of electronic equipment. The main board is arranged on the side facing away from the displayable area of the display screen 111 , and the main board can be fixedly connected to the middle frame by structural members such as screws. The main board may be a PCB (Printed Circuit Board, printed circuit board) or an FPC (Flexible Printed Circuit, flexible circuit board). Some radio frequency circuits for processing radio frequency signals can be integrated on the substrate, and a controller capable of controlling the operation of electronic equipment can also be integrated. The radio frequency circuit includes but not limited to an antenna component, at least one amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, and the like. In addition, radio frequency circuits can also communicate with networks and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (Global System of Mobile communication, GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access) Access, CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.

Referring to Fig. 3, the middle frame 12 is roughly in the shape of a rectangular frame, which includes a top frame 123 and a bottom frame 125 arranged opposite to each other, and a first side frame 127 and a second side frame connected between the top frame 123 and the bottom frame 125. 129, the first side frame 127 and the second side frame 129 are set 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 connected end to end and located on the outer periphery of the middle plate. Specifically, the connection between each frame may be a right angle connection or a 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 can be formed by breaking slits arranged on the frame.

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

Referring to FIGS. 4 and 5 , the rear cover 131 includes a first area 1311 and a second area 1312 disposed along the periphery of the first area 1311 . Wherein, the second area 1312 can make the electrochromic module 132 and the middle frame 12 of the electronic device be spaced apart, so as to realize the insulation between the electrochromic module 132 and the middle frame 12 . Surrounding edges of the rear cover 131 are 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 which are sequentially stacked. Wherein, the electrochromic module 132 is disposed on the first area 1311 of the back cover 131 , 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 changes, the color of the first area 1311 of the back cover 131 can also change, and the first area 1311 can be used as the electrochromic area of the electronic device, which can improve the color of the back cover. Appearance decoration effect, thereby improving the appearance of the rear shell.

It should be noted that, in the embodiment of the present application, the electrochromic module 132 may completely or partially cover the first region 1311 . Exemplarily, when the electrochromic module 132 partially covers the first area, the electrochromic module 132 can be arranged in a part of the first area 1311, for example, in the middle area of the first area, or, except Areas other than the area of the camera module, etc.

The first medium layer 1322 may be a transparent medium layer. The first dielectric layer 1322 may be a glass dielectric layer or a resin plastic dielectric layer. Specifically, the material of the first dielectric layer 1322 can be polyester resin (Polyethyleneterephthalate, PET or PEIT), polymethyl methacrylate (poly (methyl methacrylate, PMMA), polycarbonate PC (Polycarbonate, PC), polyimide Amine (Polyimide, PI) etc. The first conductive layer 1323 and the second conductive layer 1325 can be made of transparent conductive material. Further, the first dielectric layer 1322 can be a flexible light-transmitting dielectric layer, and then make the electrochromic module The overall structure of 132 is flexible and bendable. The first dielectric layer 1322 supports and protects the internal structure.

In one of the embodiments, the first dielectric layer 1322 may also include a color auxiliary layer, which is used to assist the color-changing functional layer composed of the first conductive layer 1323, the color-changing material layer 1324, and the second conductive layer 1325 for realizing the color-changing function. .

The first conductive layer 1323 and the second conductive layer 1325 may be transparent conductive layers. Wherein, the material of the first conductive layer 1323 and the second conductive layer 1325 can be indium tin oxide (ITO), zinc aluminum oxide (AZO), tin oxide doped with fluorine (FTO) or graphene film and the like.

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 , which are interposed between the first conductive layer 1323 and the second conductive layer 1325 and arranged sequentially. Optionally, the material of the electrochromic layer 13241 may include inorganic electrochromic materials (for example, transition metal oxides or their derivatives, such as tungsten trioxide), organic electrochromic materials (such as polythiophenes and their derivatives , viologens, tetrathiafulvalenes, metal phthalocyanines, etc.), etc.

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 active materials undergoes a redox reaction under the action of the voltage, thereby gaining and losing Electrons make the energy level of the electrochromic material change, causing the color to change; the electrolyte layer is composed of special conductive materials, such as solutions or solid electrolyte materials containing lithium perchlorate, sodium perchlorate, etc.; ions The storage layer plays the role of storing corresponding counter ions and maintaining the charge balance of the entire system when the electrochromic material undergoes redox reactions. Color-changing materials, which can play a color superimposed or complementary role. Exemplarily, the material of the electrochromic layer 13241 can be an anodic oxidation color-changing material, and the ion storage layer can be a cathode reduction color-changing material. Therefore, the color changing function of the electrochromic layer 13241 can be realized when the first conductive layer 1323 and the second conductive layer 1325 are energized, so that the color of the rear cover 131 can be adjusted according to the needs of users.

The metal layer 1321 is disposed on a side of the first dielectric layer 1322 away from the first conductive layer 1323 . Wherein, at least one side of the metal layer 1321 can be used for disposing an antenna radiator. When at least one side of the electrochromic module 132 is provided with an antenna radiator, the metal layer 1321 in the electrochromic module 132 can be used to isolate the first conductive layer 1323 and the second conductive layer 1325 from the antenna. The absorption of electromagnetic waves generated by the radiator can avoid the occurrence of energy absorption caused by the large square resistance of the first conductive layer 1323 and the second conductive layer 1325, resulting in the decline of the antenna performance of the peripheral antenna radiator. . In addition, by setting the metal layer to ground, the induced current generated on the metal layer can be introduced to the ground terminal, so that the induced current on the metal layer (reverse to the current on the antenna radiator) can be prevented from affecting the antenna radiator at the corresponding position. Inhibition occurs due to radiation formation. By arranging the grounded metal layer 1321 in the electrochromic module 132, the distance between the electrochromic module 132 and the frame can be further reduced on the premise that the radiation performance of the antenna radiator is not affected. In order to further improve the appearance decoration effect of the back shell, thereby improving the appearance expressiveness of the back shell.

In the embodiment of the present application, when the cover assembly 13 is applied to an electronic device including the middle frame 12 (for example, the middle frame 12 is provided with an antenna radiator for radiating radio frequency signals), the electrical components in the cover assembly 13 The electrochromic module 132 can be attached to the first area 1311 of the back cover 131, wherein the metal layer 1321 in the electrochromic module 132 can isolate the absorption effect of the first conductive layer 1323 and the second conductive layer 1325, and then The degradation of the antenna performance of the peripheral antenna radiator caused by the absorption effect of the conductive layer can be avoided. By adding a metal layer 1321 in the electrochromic module 132, the second area between the electrochromic module 132 and the middle frame 12 can be further reduced on the premise that the radiation performance of the antenna radiator is not affected. intervals (for example, the second region 1312 ), so as to further improve the appearance decoration effect of the rear case, thereby improving the appearance expressiveness of the rear case.

Please continue to refer to FIG. 2. In one embodiment, when the cover assembly 13 is applied to an electronic device including the middle frame 12, in the thickness direction of the electronic device, the antenna radiator at the same relative position The end face is located on a side of the first dielectric layer 1322 away from the first conductive layer 1323 .

Further, in the thickness direction of the electronic device, at the same relative position, the end surface of the antenna radiator is located on the side of the metal layer 1321 away from the first dielectric layer 1322 . Wherein, the projections in the thickness direction of the antenna radiator at the same relative position overlap. The end surface of the antenna radiator can be understood as the side surface of the middle frame 12 disposed close to the cover plate 131 , and the end surface of the antenna radiator is perpendicular to the thickness direction.

In the embodiment of the present application, by being arranged in the thickness direction of the electronic device, the end face of the antenna radiator at the same relative position is located on the side of the first dielectric layer 1322 away from the first conductive layer 1323, The distance between the antenna radiator 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 radiator 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 in the thickness direction of the antenna radiator, the metal layer 1321 , and the first dielectric layer 1322 at the same relative position overlap.

In one embodiment, the material of the metal layer 1321 may be copper foil, conductive silver paste, conductive metal compound, and the like. The conductive metal compound may include conductive gold paste or a conductive metal compound formed by mixing at least two conductive metal materials. The thickness of the conductive gold paste or the conductive metal compound formed by mixing at least two conductive metal materials can be smaller than the thickness of the copper foil, which can greatly reduce the thickness of the electrochromic module 132 and save the space occupied by the electrochromic module 132. This is more conducive to the miniaturization design of the product. It should be noted that, in the embodiment of the present application, the material of the metal layer 1321 is not limited to the above examples, and may also be other metal materials.

Referring to FIG. 7 , in one embodiment, the metal layer 1321 in the electrochromic module 132 is provided with a plurality of grounding points (for example, G1, G2, G3, G4), and the metal layer 1321 passes through the grounding points. Site ground setting.

Further, the main board in the electronic device can be provided with a ground layer, wherein the ground layer can provide a reference ground for the metal layer 1321, that is, the ground point of the metal layer 1321 can be electrically connected to the ground layer on the main board through a 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, multiple grounding points for grounding are set on the metal layer 1321, which can lead the induced current generated on the metal layer 1321 to the ground terminal, thus avoiding the It happens that the induced current on 1321 (which is opposite to the current on the antenna radiator) inhibits the radiation formation of the antenna radiator at the corresponding position.

It should be noted that the position and quantity of the grounding points on the metal layer 1321 can be set according to the shape and size of the metal layer 1321 and the distribution of antenna radiators formed on the middle frame 12 . Wherein, the shape of the metal layer 1321 may be a rectangle, a rectangle with curved corners, a circle, an ellipse or a different shape (for example, L-shape, F-shape, etc.).

In one embodiment, the number of grounding points provided on the metal layer 1321 is multiple, and the multiple grounding points may be evenly distributed on the metal layer 1321 or non-uniformly distributed on the metal layer 1321 . Please continue to refer to FIG. 7. In one embodiment, the orthographic projection of the metal layer 1321 on the reference plane and the orthographic projection of the target conductive layer 1323 on the reference plane completely overlap, wherein the reference plane is perpendicular to the reference plane. The plane in the 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, thereby preventing the metal layer 1321 from extending to In the interval area, ensure that there is sufficient antenna clearance area to reduce 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 are described by taking the shape of the metal layer 1321 as a rectangle or an arc-cornered rectangle as an example.

Wherein, 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 arranging the four grounding points evenly at the four vertices of the rectangle or rounded rectangle, the induced current generated on the metal layer 1321 can be evenly and quickly guided to the ground end, so as to avoid affecting the performance of the antenna radiator. Influence.

Referring to FIG. 8, further, the edge region includes a first edge and a third edge arranged opposite to each other, and a second edge and a fourth edge connected between the first edge and the third edge, so The second edge and the fourth edge are opposite to each other. Wherein, the number of grounding points can also be increased, for example, nine grounding points G1, G2, G3, G4, G5, G6, G7, G8, G9 can be set, and four grounding points G1, G2, G3, G4 correspond to Distributed in the four corner regions of the metal layer 1321, the other four ground points G5, G6, G7, and G8 are respectively set on the first edge, the second edge, the third edge, and the third edge. At the center of the four edges, the remaining ground point G9 may be set at the geometric center of the metal layer 1321 .

In this embodiment, by setting nine grounding points, the induced current generated on the metal layer 1321 can be led to the ground evenly and quickly, 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. Exemplarily, the metal layer 1321 can be attached to a partial area of the first area 1311 of the back cover 131 , such as the 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 spaced apart from the first metal sheet 132a, wherein the second metal sheet The area of the first metal sheet 132b is smaller than that of the first metal sheet 132a, and the first metal sheet 132a is provided with a grounding point for grounding.

Further, the length dimension L of the second metal sheet 132b may be less than a quarter of the working frequency wavelength of the antenna radiator arranged close to the metal sheet, so that the induced current with the same frequency cannot be generated in the second metal sheet 132b ( The current on the antenna radiator close to the metal sheet is reversed), which can further reduce the influence of the induced current on the metal sheet on the performance of the antenna radiator. Wherein, the length dimension can be understood as being in the extension direction of the second metal sheet 132b, that is, the extension direction is parallel to the extension direction of the antenna radiator that the metal sheet is disposed close to.

In the embodiment of the present application, by arranging metal sheets of two sizes, the first metal sheet 132a with a large size is provided with a grounding point, so that the induced current generated on the first metal sheet 132a can be guided to the ground terminal , thereby reducing the impact on the performance of the antenna radiator. The first metal sheet 132 a and the second metal sheet 132 b can also isolate the absorption effect of each conductive layer in the electrochromic module 132 and further improve the product expression of the electronic device back cover 131 .

In one embodiment, there may be multiple first metal sheets 132a, and there may be multiple second metal sheets 132b. That is, the metal layer 1321 may include a first metal sheet 132a and a plurality of second metal sheets 132b, or may include a plurality of first metal sheets 132a and a second metal sheet 132b, or may include a plurality of first metal sheets 132a and a plurality of second metal sheets 132b. It should be noted that, in the embodiment of the present application, when there are multiple first metal pieces 132a, the shapes and areas of the multiple first metal pieces 132a may be the same or different. Correspondingly, when there are multiple second metal pieces 132b, the shapes and areas of the multiple second metal pieces 132b may be the same or different.

In one of the embodiments, when there are multiple second metal sheets 132b, at least one of the multiple second metal sheets 132b may be provided with a grounding point, so as to further connect the second metal sheets The induced current generated on 131a is guided to the ground terminal.

In one of the embodiments, any two adjacent metal sheets are spaced apart. Wherein, the first distance between two adjacent first metal sheets is greater than or equal to the second distance between two adjacent second metal sheets.

Please continue to refer to FIG. 9 , for example, the number of the first metal sheet 132 a and the number of the second metal sheet 132 b can be respectively set to two. It should be noted that, in the embodiment of the present application, the size and relative position of the first metal sheet 132a and the second metal sheet 132b, as well as the number and position of the grounding points G set on the first metal sheet 132a can be determined according to the The operating frequency band of the antenna radiator provided on the frame 12 and the size of the conductive layer in the electrochromic module 132 are set to ensure that the metal layer 1321 can isolate the absorption effect of each conductive layer in the electrochromic module 132 At the same time, the radiation performance of the antenna radiator and the product expressiveness of the back cover 131 of the electronic device can be further improved. In one embodiment, the middle frame 12 can be provided with a plurality of antenna radiators through slots. Specifically, the middle frame 12 is provided with a medium-high frequency antenna radiator for radiating medium-high frequency signals and a low-frequency antenna radiator for radiating low-frequency signals; wherein, the first metal sheet 132a is close to the medium-high frequency antenna for radiation The second metal sheet 132b is arranged close to the low-frequency antenna.

Please continue to refer to FIG. 9 , specifically, the top frame 123 is provided with a first radiator F1 for radiating medium-high frequency signals, and the first side frame 127 is provided with a second radiator F2 for radiating low-frequency signals, The bottom frame 125 is provided with a third radiator F3 for radiating medium and high frequency signals, and a fourth radiator F4 for radiating low frequency signals. Among them, the medium and high frequency signals may include medium frequency signals and high frequency signals in 4G long term evolution (Long Term Evolution, LTE) signals and/or 5G new air interface (NewRadio, NR) signals, for example, B1 (N1), B40 (N40) Medium and high frequency signals in equal frequency bands. The low-frequency signal may also include low-frequency signals in 4GLTE signals and/or 5G NR signals, for example, frequency bands such as B5 (N5) and B8 (N8).

Please continue to refer to FIG. 9, wherein the metal layer 1321 includes two first metal sheets 132a and two second metal sheets 132b, wherein one of the first metal sheets 132a is close to the first radiator F1 The other first metal sheet 132a is arranged close to the third radiator F3, and the two second radiators F2 are arranged close to the first side frame.

Further, the first antenna radiator F1 arranged on the top frame 123 is used to radiate intermediate frequency and high frequency signals, and a first metal sheet 132a can be arranged at a position close to the top frame 123, wherein the first metal sheet 132a The length dimension may extend to the edge of the first region 1311 . Specifically, the shape of the first metal sheet 132a is "L", and the grounding point G provided on the first metal sheet 132a can be set close to the second side frame 129 and the peripheral area of the rear camera. In addition, the third antenna radiator F3 disposed on the bottom frame 125 radiates intermediate frequency and high frequency signals, and the fourth antenna radiator F4 is used to radiate low frequency signals. Another first metal sheet 132a may be disposed near the bottom frame. Wherein, the length dimension of the first metal sheet 132a can extend to the edge of the first region 1311 . Specifically, the shape of the first metal sheet 132a may be rectangular, and the grounding point G provided on the first metal sheet 132a may be arranged close to the bottom frame 125 . Wherein, the distance D1 between the two first metal sheets 132a is greater than or equal to 2 millimeters.

The second antenna radiator F2 arranged on the first side frame 127 is used to radiate low-frequency signals, and two second metal sheets 132b can be arranged at a position close to the first side frame 127 to pass through the second metal sheet of small fragments 132b to optimize the performance of the antenna radiator. Specifically, the two second metal pieces 132b are suspended and not grounded, wherein the distance D2 between the two second metal pieces 132b is greater than or equal to 2 millimeters. Further, the shape of the second metal sheet 132b can be rectangular, and when the electronic device is a mobile phone, the size of the second metal sheet 132b can be set to 25mm (length dimension)*14mm (width dimension). It should be noted that the distance between the metal sheets and the shape and size of the metal sheets are limited to the above examples, and can also be adjusted adaptively according to actual needs.

Based on the electronic equipment 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 the radiation power of each antenna radiator in the four frequency bands of LTE B1, LTEB40, LTE B5, and LTE B8 when the metal layer 1321 is added to the electrochromic module 132 and the metal layer 1321 is not provided. drop.

Wherein, the deterioration amount of the original electrochromic performance refers to the total radiated power (TRP) reduction of the original headroom electrochromic module 132 (without the metal layer 1321 ) to the antenna performance. The performance deterioration amount of the solution of the present application is the total radiated power of the antenna performance by using the electrochromic module 132 in the embodiment of the present application. The performance improvement amount is a difference between the second radiation power reduction and the first radiation power reduction.

It can be seen from Table 1 that by setting the metal layer 1321 under 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. The effect of the layer 1321 on the performance of the antenna radiator, while improving the radiation performance of the antenna radiator, can also shorten the size of the second area 1312 between the antenna radiator and the first area 1311, so as to further improve the performance of the rear cover 131. Product expressiveness. That is, under the condition of keeping the same width of the second region 1312 , the overall radiation performance of the antenna radiator can be improved by disposing the metal layer 1321 below the conductive layer and grounding the metal layer 1321 .

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. Wherein, the second medium layer 1326 may be a transparent medium layer, specifically, the second medium layer 1326 may be a glass medium layer or a resin plastic medium layer. The second dielectric layer 1326 can also protect the color-changing material layer 1324 and each conductive layer. Further, the second medium layer 1326 may be a flexible light-transmitting medium layer, so that the overall structure of the electrochromic module 132 is a flexible and bendable structure.

As shown in Figure 11, further, the electronic device is a mobile phone 10 as an example for description, specifically, as shown in Figure 11, the mobile phone 10 may include a memory 21 (which optionally includes one or more computer-readable storage media), processor 22, control circuit 23, 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 can understand that the mobile phone 10 shown in FIG. 11 does not constitute a limitation to the mobile phone, and may include more or less components than shown in the figure, or combine some components, or arrange different 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.

Memory 21 optionally includes high-speed random access memory, and optionally also includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplarily, the software components stored in the memory 21 include an operating system 211 , a communication module (or an instruction set) 212 , a global positioning system (GPS) module (or an instruction set) 213 and the like.

Processor 22 and other control circuitry 23 may be used to control the operation of 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 assembly 13 , and the control circuit 23 is used to receive a control command, and the control command is used to control the electrochromic module 132 to change color. Specifically, the control circuit 23 is used to receive control instructions input through the input/output (I/O) subsystem 24, and control the working state of the electrochromic module 132 according to the control instructions; wherein, the The working state of the electrochromic module 132 includes controlling and changing its voltage or current signal state 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 can also be combined with structures such as an appearance film and a substrate color layer, so that the electronic device can present a color-changing appearance effect.

Among them, the I/O subsystem 24 couples input/output peripherals on the handset 10 such as a keypad and other input control devices to the peripheral interface 23 . I/O subsystem 24 optionally includes a touch screen, keys, tone generator, accelerometer (motion sensor), ambient light sensor and other sensors, light emitting diodes and other status indicators, data ports, and the like. Exemplarily, a user may control the operation of handset 10 by supplying commands via I/O subsystem 24 and may use the output resources of I/O subsystem 24 to receive status information and other output from handset 10 . For example, the user can turn on or turn off the mobile phone by pressing the button 241 .

The above examples only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (19)

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:

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.

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 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 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,

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.

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