Electronic device

Abstract

The embodiment of the invention provides an electronic device to weaken the interference of a noise signal in a resonant cavity on an antenna, and the electronic device comprises a grounding assembly, a frame body and a display module, the grounding assembly comprises an elastic base body and conductive cloth, the elastic base body comprises a first elastic layer, a reinforcing sheet and a second elastic layer which are stacked in sequence, and the area of the orthographic projection of the second elastic layer on the reinforcing sheet is smaller than the area of the surface, facing the second elastic layer, of the reinforcing sheet; the frame body is provided with an installation groove, at least part of the second elastic layer is located in the installation groove, the conductive cloth wraps the outer surface of the elastic base body, the reinforcing sheet is bonded with the frame body, the display module is connected with the frame body in a grounding mode through the conductive cloth, the conductive cloth faces the groove bottom of the installation groove, and the reinforcing sheet is arranged on the frame body. And the groove is abutted against the groove bottom of the mounting groove.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment design, and in particular to an electronic equipment. Background Art

[0002] As electronic devices gradually develop towards miniaturization and integration, the antenna module of electronic devices has also evolved from an external antenna to a built-in design. Taking a mobile phone as an example, the frame of the mobile phone frame forms a frame antenna to make the structure of the mobile phone more compact. Although the built-in antenna makes the structure of the electronic device more compact, it will reduce the anti-interference ability of the antenna.

[0003] For example, in the related art, an electronic device includes a frame and a display module, and the display module is connected to the frame portion of the frame. A metal layer is provided on the back of the display module, and the metal layer is spaced apart from the main body of the frame, and a resonant cavity is formed between the metal layer and the main body. The noise signal generated by the electronic components of the electronic device during operation will oscillate in the resonant cavity and radiate to the antenna, thereby interfering with the antenna. Summary of the invention

[0004] The embodiment of the present application provides an electronic device to solve the problem of how to reduce the interference of noise signals in a resonant cavity on an antenna.

[0005] In order to solve the above technical problems, this application is implemented as follows: The electronic device provided in the embodiment of the present application includes: a grounding component, a frame and a display module; the grounding component includes an elastic substrate and a conductive cloth, the elastic substrate includes a first elastic layer, a reinforcing sheet and a second elastic layer stacked in sequence, the area of ​​the orthographic projection of the second elastic layer on the reinforcing sheet is smaller than the area of ​​the surface of the reinforcing sheet facing the second elastic layer; the frame is provided with a mounting groove, the second elastic layer is at least partially located in the mounting groove, the conductive cloth is coated on the outer surface of the elastic substrate, the reinforcing sheet is bonded to the frame, the display module is grounded to the frame through the conductive cloth, wherein the portion of the conductive cloth facing the bottom of the mounting groove abuts against the bottom of the mounting groove.

[0006] Optionally, the frame includes a main body, the mounting groove is opened in the main body, the display module is opposite to the main body and is spaced apart from the main body, a metal layer is provided on the side of the display module facing the main body, and the grounding component is sandwiched between the metal layer and the main body; the conductive cloth includes a first connecting part and a second connecting part, the first connecting part faces the metal layer, and the part of the conductive cloth facing the bottom of the mounting groove is the second connecting part.

[0007] Optionally, the grounding component further includes an insulating film, which is disposed on a side of the first connecting portion away from the first elastic layer, and the insulating film is sandwiched between the first connecting portion and the metal layer.

[0008] Optionally, a conductive adhesive layer is provided on a side of the first connecting portion facing away from the reinforcing sheet, and the insulating film is bonded to the first connecting portion via the conductive adhesive layer.

[0009] Optionally, the frame body also includes a frame portion, the frame portion includes an antenna segment, the notch of the mounting slot is rectangular, and the long side of the notch is parallel to the extension direction of the antenna segment; the first side portion of the elastic base faces the antenna segment, the second side portion of the elastic base is away from the first side portion, the conductive cloth is coated on the outer surface of the first side portion, and / or the conductive cloth is coated on the outer surface of the second side portion.

[0010] Optionally, the conductive cloth also includes a third connecting part and a fourth connecting part, and in the direction from the third connecting part toward the fourth connecting part, the second elastic layer is located between the third connecting part and the fourth connecting part; one side of the third connecting part is bonded to the reinforcement sheet, and the other side opposite to it is bonded to the main body, and one side of the fourth connecting part is bonded to the reinforcement sheet, and the other side opposite to it is bonded to the main body.

[0011] Optionally, the reinforcing sheet is provided with a first adhesive layer and a second adhesive layer on both sides along its thickness direction, respectively; the first elastic layer is bonded to the reinforcing sheet via the first adhesive layer; and the third connecting portion, the second elastic layer and the fourth connecting portion are all bonded to the reinforcing sheet via the second adhesive layer.

[0012] Optionally, a fifth adhesive layer is provided on the side of the third connecting portion facing away from the reinforcing sheet, and the third connecting portion is bonded to the main portion via the fifth adhesive layer; a sixth adhesive layer is provided on the side of the fourth connecting portion facing away from the reinforcing sheet, and the fourth connecting portion is bonded to the main portion via the sixth adhesive layer.

[0013] Optionally, a third adhesive layer is provided on the side of the first elastic layer facing away from the reinforcing sheet, and the first connecting portion is bonded to the first elastic layer via the third adhesive layer; a fourth adhesive layer is provided on the side of the second elastic layer facing away from the reinforcing sheet, and the second connecting portion is bonded to the second elastic layer via the fourth adhesive layer.

[0014] Optionally, an orthographic projection of the second elastic layer on the first elastic layer is located within an outer contour of the first elastic layer; and an orthographic projection of the second connecting portion on the first connecting portion is located within an outer contour of the first connecting portion.

[0015] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: In an embodiment of the present application, in an embodiment of the present application, a grounding component can be clamped between the display module and the frame, so that the display module and the frame can be grounded using a conductive cloth. In this way, the signal propagation path between the antenna and the resonant cavity can be blocked, so that the noise signal is not easily transmitted to the antenna through the resonant cavity between the metal layer and the main body, thereby reducing the interference of the noise signal to the antenna.

[0016] In addition, the second elastic layer can be compressed by the reinforcing sheet to increase the pressure applied to the portion of the conductive cloth facing the bottom of the mounting groove through the second elastic layer, so as to reduce the contact impedance between the portion of the conductive cloth facing the bottom of the mounting groove and the bottom of the mounting groove, thereby reducing the strength of the nonlinear signal. Furthermore, by reducing the strength of the nonlinear signal, the sensitive interference and radiation spurious problems caused by the nonlinear signal can be solved. Moreover, the second elastic layer can be compressed by the reinforcing sheet to prevent the elastic restoring force applied by the second elastic layer to the display module from being too large, thereby causing the top printing problem of the display module.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application; Figure 2 for Figure 1 A partial schematic diagram of an electronic device is shown; Figure 3 A partial schematic diagram of a grounding component, a main body and a metal layer provided in an embodiment of the present application; Figure 4 A partial schematic diagram of a frame provided in an embodiment of the present application; Figure 5 A bottom view of a grounding assembly provided in an embodiment of the present application; Figure 6 A partial schematic diagram of another grounding component, a main body and a metal layer provided in an embodiment of the present application; Figure 7A schematic diagram of a first conductor and a second conductor being in a conductive contact state provided in an embodiment of the present application.

[0020] Description of reference numerals: 100- electronic equipment; 110-grounding component; 111-elastic matrix; 1111-first elastic layer; 1112-reinforcement sheet; 1113-second elastic layer; 1114-first adhesive layer; 1115-second adhesive layer; 1116-third adhesive layer; 1117-fourth adhesive layer; 112-conductive fabric; 1121-first connecting portion; 1122-second connecting portion; 1123-third connecting portion; 1124-fourth connecting portion; 1131-fifth adhesive layer; 1132-sixth adhesive layer; 114-insulating film; 115-conductive adhesive layer; 120-frame; 121-main body; 1211-mounting slot; 1212-notch of the mounting slot; 122-frame; 1221-antenna segment; 130-display module; 131-metal layer; 210 - first conductor; 220 - second conductor; 230 - excitation current; 240 - excitation electric field. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article.

[0024] Furthermore, it is required that the present application be understood not only by the actual terms used but also by the meanings connoted by each term.

[0025] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0026] The present application embodiment provides an electronic device. Figures 1 to 6 The electronic device 100 provided in the embodiment of the present application includes: a grounding component 110, a frame 120 and a display module 130. For example, the electronic device 100 can be a mobile phone or a tablet computer. The frame 120 can be a metal frame; or the frame 120 can be a metal embedded plastic frame; or the frame 120 can be composed of a plastic part with a metal material layer on the surface.

[0027] The grounding assembly 110 includes an elastic substrate 111 and a conductive cloth 112. The elastic substrate 111 includes a first elastic layer 1111, a reinforcing sheet 1112, and a second elastic layer 1113 stacked in sequence, and the area of ​​the orthographic projection of the second elastic layer 1113 on the reinforcing sheet 1112 is smaller than the area of ​​the surface of the reinforcing sheet 1112 facing the second elastic layer 1113. In this way, at least a part of the surface of the reinforcing sheet 1112 facing the second elastic layer 1113 is not covered by the second elastic layer 1113, so that the reinforcing sheet 1112 can be connected to the frame 120 by connecting the area of ​​the reinforcing sheet 1112 not covered by the second elastic layer 1113 to improve the convenience of connecting the frame 120.

[0028] The frame 120 is provided with a mounting groove 1211, and the second elastic layer 1113 is at least partially located in the mounting groove 1211. Figure 2 and Figure 3 Generally speaking, the smaller the interval between the side walls opposite to the display module 130 and the frame 120, the thinner the electronic device 100 can be. However, when the interval between the side walls opposite to the display module 130 and the frame 120 is small, if the grounding assembly 110 is directly sandwiched between the display module 130 and the frame 120, it is necessary to provide a first elastic layer 1111 and a second elastic layer 1113 with relatively thin thickness. When the first elastic layer 1111 and the second elastic layer 1113 are relatively thin, the performance of the first elastic layer 1111 and the second elastic layer 1113 will be relatively poor.

[0029] Therefore, the second elastic layer 1113 can be at least partially located in the mounting groove 1211 by providing the mounting groove 1211 in the frame 120, thereby appropriately increasing the thickness of the first elastic layer 1111. In this way, the thickness of the first elastic layer 1111 and the second elastic layer 1113 can meet the design requirements.

[0030] Furthermore, the conductive cloth 112 is coated on the outer surface of the elastic substrate 111. The reinforcing sheet 1112 is bonded to the frame 120. The display module 130 is grounded to the frame 120 through the conductive cloth 112, wherein the conductive cloth 112 faces the bottom of the installation groove 1211 and abuts against the bottom of the installation groove 1211.

[0031] In this way, in an embodiment of the present application, the grounding component 110 can be clamped between the display module 130 and the frame 120, so that the display module 130 and the frame 120 can be grounded using the conductive cloth 112. In this way, the propagation path of the signal between the antenna and the resonant cavity can be blocked, so that the noise signal is not easily transmitted to the antenna through the resonant cavity between the metal layer 131 and the main body 121, thereby reducing the interference of the noise signal to the antenna.

[0032] In addition, the second elastic layer 1113 can be compressed by the reinforcing sheet 1112 to increase the pressure applied to the portion of the conductive cloth 112 facing the bottom of the mounting groove 1211 through the second elastic layer 1113, so as to reduce the contact impedance between the portion of the conductive cloth 112 facing the bottom of the mounting groove 1211 and the bottom of the mounting groove 1211, thereby reducing the strength of the nonlinear signal. Furthermore, by reducing the strength of the nonlinear signal, the sensitive interference and radiation spurious problems caused by the nonlinear signal can be solved. Moreover, the second elastic layer 1113 can be compressed by the reinforcing sheet 1112 to prevent the elastic restoring force applied by the second elastic layer 1113 to the display module 130 from being too large, thereby causing the display module 130 to have a top printing problem.

[0033] refer to Figure 2 In some embodiments, the frame 120 includes a main body 121. A mounting groove 1211 is provided in the main body 121. The display module 130 is opposite to the main body 121 and is spaced apart from the main body 121. A metal layer 131 is provided on the side of the display module 130 facing the main body 121. The grounding component 110 is sandwiched between the metal layer 131 and the main body 121. Figure 3 The conductive fabric 112 includes a first connection portion 1121 and a second connection portion 1122. The first connection portion 1121 faces the metal layer 131. The portion of the conductive fabric 112 facing the bottom of the mounting groove 1211 is the second connection portion 1122. Figure 3 For example, the portion where the conductive cloth 112 covers the top of the elastic substrate 111 is the first connecting portion 1121 , and the portion where the conductive cloth 112 covers the bottom of the elastic substrate 111 is the second connecting portion 1122 .

[0034] Exemplarily, the first connection portion 1121 of the conductive cloth 112 can be directly electrically connected to the metal layer 131, and the second connection portion 1122 of the conductive cloth 112 can abut against the bottom of the mounting groove 1211, so that the metal layer 131 of the display module 130 can be grounded to the frame 120 through the conductive cloth 112. In this way, the propagation path of the signal between the antenna and the resonant cavity can be blocked, so that the noise signal is not easily transmitted to the antenna through the resonant cavity between the metal layer 131 and the main body 121, thereby reducing the interference of the noise signal to the antenna.

[0035] It should be noted that the reference Figure 7 When the first conductor 210 and the second conductor 220 are in a conductive contact state, the surface of the first conductor 210 facing the second conductor 220 is not in a flat state at a microscopic level. There are multiple tiny protrusions on the surface of the first conductor 210 facing the second conductor 220, and the top of each protrusion is in conductive contact with the second conductor 220. When the small contact point is excited by the signal source, an excitation current 230 will be generated. In addition, an excitation electric field 240 will also be generated. The excitation electric field 240 will generate nonlinear signals other than the signal source, and the nonlinear signal is an interference signal.

[0036] Furthermore, returning to the embodiment provided by the present application, a nonlinear signal will be generated between the second connection portion 1122 of the conductive cloth 112 and the main body 121 due to the contact of the convex point. The intensity of the nonlinear signal will decrease as the contact area between the convex point and the main body 121 increases. In the embodiment of the present application, the reinforcing sheet 1112 is bonded to the main body 121, and the reinforcing sheet 1112 will compress the second elastic layer 1113 sandwiched between the reinforcing sheet 1112 and the bottom of the mounting groove 1211.

[0037] Furthermore, the second elastic layer 1113 will "squeeze" the second connection portion 1122 of the conductive cloth 112. Therefore, by "squeezing" the second connection portion 1122 of the conductive cloth 112, the contact area between the convex point on the side of the conductive cloth 112 facing the main body 121 and the main body 121 can be increased to reduce the intensity of the nonlinear signal, thereby achieving the effect of improving the nonlinear signal radiation problem between the second connection portion 1122 of the conductive cloth 112 and the main body 121.

[0038] In some embodiments, the first elastic layer 1111 is a first foam. The second elastic layer 1113 is a second foam. In other words, the first elastic layer 1111 and the second elastic layer 1113 are both made of foam. The foam is a material made of foamed plastic particles. In addition, the first elastic layer 1111 and the second elastic layer 1113 can also be made of other elastic materials, which are not listed here one by one.

[0039] In some embodiments, the metal layer 131 is a copper foil. The reinforcing sheet 1112 is a reinforcing steel sheet. Of course, when implementing the solution provided in the embodiment of the present application, those skilled in the art can also flexibly select the material of the metal layer 131 and the reinforcing sheet 1112 according to actual needs, as long as the selected material can meet the desired function. Therefore, the embodiment of the present application does not limit the specific material of the metal layer 131 and the reinforcing sheet 1112.

[0040] refer to Figure 3 In some embodiments, the conductive fabric 112 further includes a third connection portion 1123 and a fourth connection portion 1124. In the direction from the third connection portion 1123 toward the fourth connection portion 1124, the second elastic layer 1113 is located between the third connection portion 1123 and the fourth connection portion 1124. Figure 3 Taking the illustrated orientation as an example, the third connection portion 1123 and the fourth connection portion 1124 are spaced apart from each other in a direction from left to right; in the direction from left to right, the second elastic layer 1113 is located between the third connection portion 1123 and the fourth connection portion 1124.

[0041] One side of the third connection portion 1123 is bonded to the reinforcing sheet 1112, and the other side thereof is bonded to the main body 121. In this way, the left side of the reinforcing sheet 1112 can be indirectly bonded to the main body 121 via the third connection portion 1123. Specifically, the left side of the reinforcing sheet 1112 is indirectly bonded to the outer peripheral portion of the slot of the mounting slot 1211 of the main body 121.

[0042] One side of the fourth connection portion 1124 is bonded to the reinforcing sheet 1112, and the other side thereof is bonded to the main body 121. In this way, the right side of the reinforcing sheet 1112 can be indirectly bonded to the main body 121 via the fourth connection portion 1124. Specifically, the right side of the reinforcing sheet 1112 is indirectly bonded to the outer peripheral portion of the slot of the mounting slot 1211 of the main body 121.

[0043] In addition, the above scheme is adopted to Figure 3 Taking the illustrated position as an example, a circle of conductive cloth 112 is provided on the outer periphery of the cross section of the elastic substrate 111, so that the elastic substrate 111 is wrapped by the circle of conductive cloth 112. In this way, by wrapping the elastic substrate 111 with the circle of conductive cloth 112, the complexity of the wrapping process of the conductive cloth 112 can be reduced, so as to reduce the manufacturing difficulty of the grounding component 110, thereby reducing the manufacturing cost of the grounding component 110.

[0044] refer to Figure 3In some embodiments, the reinforcing sheet 1112 is provided with a first adhesive layer 1114 and a second adhesive layer 1115 on both sides along the thickness direction thereof. The first elastic layer 1111 is bonded to the reinforcing sheet 1112 via the first adhesive layer 1114. The third connecting portion 1123, the second elastic layer 1113 and the fourth connecting portion 1124 are bonded to the reinforcing sheet 1112 via the second adhesive layer 1115. In this way, the elastic base 111 can be formed by a bonding process, further reducing the difficulty of manufacturing the elastic base 111.

[0045] refer to Figure 3 In some embodiments, a fifth adhesive layer 1131 is provided on a side of the third connection portion 1123 that is away from the reinforcing sheet 1112, and the third connection portion 1123 is bonded to the main body 121 via the fifth adhesive layer 1131. A sixth adhesive layer 1132 is provided on a side of the fourth connection portion 1124 that is away from the reinforcing sheet 1112, and the fourth connection portion 1124 is bonded to the main body 121 via the sixth adhesive layer 1132.

[0046] In this way, the two sides of the reinforcing sheet 1112 located on the second elastic layer 1113 can be bonded to the outer peripheral part of the slot of the installation slot 1211 indirectly through the third connecting part 1123 and the fourth connecting part 1124, thereby "squeezing" the second elastic layer 1113. Furthermore, the second elastic layer 1113 will "squeeze" the second connecting part 1122 of the conductive cloth 112. Therefore, by "squeezing" the second connecting part 1122 of the conductive cloth 112, the contact area between the convex point of the conductive cloth 112 on the side facing the main body 121 and the main body 121 can be increased, thereby reducing the intensity of the nonlinear signal, and further achieving the effect of improving the nonlinear signal radiation problem between the second connecting part 1122 of the conductive cloth 112 and the main body 121.

[0047] In some embodiments, a third adhesive layer 1116 is provided on the side of the first elastic layer 1111 away from the reinforcing sheet 1112, and the first connecting portion 1121 is bonded to the first elastic layer 1111 via the third adhesive layer 1116. A fourth adhesive layer 1117 is provided on the side of the second elastic layer 1113 away from the reinforcing sheet 1112, and the second connecting portion 1122 is bonded to the second elastic layer 1113 via the fourth adhesive layer 1117. In this way, adhesive layers can be provided on the upper surface and the lower surface of the elastic substrate 111, respectively, so that the conductive fabric 112 can be bonded to the outer surface of the elastic substrate 111.

[0048] For example, the first adhesive layer 1114 may be a double-sided adhesive layer. Alternatively, the first adhesive layer 1114 may be made of any other adhesive material, and the present embodiment of the application does not limit the material of the first adhesive layer 1114. In addition, the other adhesive layers may be configured with reference to the first adhesive layer 1114, and will not be described in detail here.

[0049] refer to Figure 6 In some embodiments, the grounding component 110 further includes an insulating film 114 . The insulating film 114 is disposed on a side of the first connecting portion 1121 away from the first elastic layer 1111 , and the insulating film 114 is sandwiched between the first connecting portion 1121 and the metal layer 131 .

[0050] In this way, the stacked metal layer 131, the insulating film 114 and the first connecting portion 1121 of the conductive cloth 112 can form an equivalent flat plate capacitor, wherein the metal layer 131 forms the first capacitor plate and the first connecting portion 1121 of the conductive cloth 112 forms the second capacitor plate.

[0051] It can be understood that the capacitor has the characteristic of "isolating DC and passing AC", and the noise signal is an alternating signal. Therefore, when the signal to be shielded is an alternating signal, although the first connecting part 1121 is not directly conductively connected to the metal layer 131, the conductive cloth 112 electrically connected to the frame 120 can also have the effect of grounding the metal layer 131.

[0052] refer to Figure 6 In some embodiments, a conductive adhesive layer 115 is provided on a side of the first connection portion 1121 facing away from the reinforcing sheet 1112 , and the insulating film 114 is bonded to the first connection portion 1121 via the conductive adhesive layer 115 .

[0053] It should be noted that the solution of using an insulating film 114 to separate the first connecting part 1121 and the metal layer 131 can make the first connecting part 1121 not need to be in direct conductive contact with the metal layer 131. Therefore, the problem described in the above paragraph that a small contact point with an excitation electric field will be generated between the first connecting part 1121 and the metal layer 131 under the stimulation of a signal source, thereby causing interference signals, will not occur.

[0054] refer to Figure 2 In some embodiments, the frame 120 further includes a frame portion 122. The frame portion 122 includes an antenna segment 1221. Figure 5 , the slot 1212 of the mounting slot 1211 is rectangular, and the long side of the slot 1212 is parallel to the extension direction of the antenna segment 1221. Exemplarily, for the vertically extending antenna segment 1221, the long side of the slot 1212 can also be arranged vertically. Similarly, for the horizontally extending antenna segment 1221, the long side of the slot 1212 can also be arranged horizontally.

[0055] refer to Figure 2 and Figure 3, the first side of the elastic base 111 faces the antenna segment 1221, and the second side of the elastic base 111 is away from the first side. Exemplarily, the right side of the elastic base 111 faces the antenna segment 1221, and the left side of the elastic base 111 is away from the right side of the elastic base 111.

[0056] Further, the conductive cloth 112 is coated on the outer surface of the first side portion, and / or, the conductive cloth 112 is coated on the outer surface of the second side portion. Exemplarily, the conductive cloth 112 is coated on the outer surface of the first side portion. Combined with the above example, the conductive cloth 112 is coated on the right side of the elastic matrix 111. In this way, due to the shielding effect of the conductive cloth 112 coated on the right side of the elastic matrix 111, the noise signal will not be able to pass through the conductive cloth 112 located on the right side of the elastic matrix 111 from left to right, and propagate to the antenna segment 1221 on the right side, thereby reducing the interference of the noise signal on the antenna segment 1221. In addition, the conductive cloth 112 is coated on the outer surface of the second side portion, or the conductive cloth 112 is coated on the outer surface of the first side portion and the outer surface of the second side portion, which has a similar effect, which will not be described in detail here.

[0057] In this way, the portion of the conductive cloth 112 located on the left and / or right side of the elastic base 111 can form a shielding body to prevent the noise signal from passing through the grounding component 110 in the direction from the left side to the right side of the grounding component 110 and interfering with the antenna segment 1221 located on the right side of the grounding component 110.

[0058] In some embodiments, the orthographic projection of the second elastic layer 1113 on the first elastic layer 1111 is located within the outer contour of the first elastic layer 1111. The orthographic projection of the second connecting portion 1122 on the first connecting portion 1121 is located within the outer contour of the first connecting portion 1121.

[0059] It should be noted that Figure 5 Taking the graph shown as an example, Figure 5 The top and bottom edges of the first rectangle are centered, with Figure 5 The upper edge and the lower edge of the second rectangle formed by the outer contour of the figure shown in the figure coincide with each other, in this case, the first rectangle can also be said to be located within the outer contour of the second rectangle. Therefore, the orthographic projection of the second elastic layer 1113 on the first elastic layer 1111 is located within the outer contour of the first elastic layer 1111. The orthographic projection of the second connecting portion 1122 on the first connecting portion 1121 is located within the outer contour of the first connecting portion 1121, which can be understood by referring to this example.

[0060] To facilitate those skilled in the art to understand the solutions provided by the embodiments of the present application, more specific examples are provided below for reference by those skilled in the art.

[0061] In one embodiment, the main body 121 of the frame 120 is made of metal, the metal layer 131 is copper foil, the first elastic layer 1111 is a first foam, and the second elastic layer 1113 is a second foam. The area of ​​the notch 1212 of the mounting groove 1211 is about 10 to 20 square millimeters. For example, the length of the notch 1212 of the mounting groove 1211 is 6 millimeters and the width is 3 millimeters. The thickness of the first foam in the natural state is 0.3 to 0.6 millimeters, and the thickness of the second foam in the natural state is 0.3 to 0.6 millimeters. The thickness of the reinforcing sheet 1112 is 0.15 to 0.3 millimeters.

[0062] When the grounding component 110 also includes an insulating film 114, and the first connecting portion 1121 and the metal layer 131 form a capacitor, according to the resonant LC resonant frequency theoretical calculation formula: f=1 / (2π√(LC)), where "√" is the square root symbol; to achieve low-impedance transmission of high-frequency AC signals (such as RF low-frequency band f is 700MHz-900MHz), considering the weak parasitic inductance, L is less than 0.5 nanohenry (nH), and the required capacitance value C is approximately 100pF.

[0063] According to the theoretical calculation formula of flat plate capacitor, C=(εS) / d, where ε is the dielectric constant of the medium between the capacitor plates, S is the area of ​​the capacitor plates, and d is the distance between the capacitor plates; when the insulating film 114 is polyethylene, the dielectric constant ε is approximately 2.3. For example, the thickness of the insulating film 114 is approximately 0.01 mm. Based on the capacitance requirement of 100 picofarads (pF), it can be inferred that the area requirement of the first foam is approximately 50 square millimeters.

[0064] It is understandable that if the area of ​​the notch 1212 of the mounting groove 1211 is about 10 to 20 square millimeters, the capacitance formed by the first connection portion 1121 and the metal layer 131 can meet the parameter requirements by making the area of ​​the first foam larger than the area of ​​the second foam. Of course, in other embodiments, the parameters can also be flexibly set according to actual conditions, and therefore, the embodiment of the present application does not limit the values ​​of the parameters.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the embodiments of the present application, and the scope of the embodiments of the present application is defined by the appended claims and their equivalents.

Claims

1. An electronic device, characterized in that: include: Grounding components, frames and display modules; The grounding assembly comprises an elastic substrate and a conductive cloth, wherein the elastic substrate comprises a first elastic layer, a reinforcing sheet and a second elastic layer stacked in sequence, and an area of ​​an orthographic projection of the second elastic layer on the reinforcing sheet is smaller than an area of ​​a surface of the reinforcing sheet facing the second elastic layer; The frame is provided with a mounting groove, the second elastic layer is at least partially located in the mounting groove, the conductive cloth is coated on the outer surface of the elastic substrate, the reinforcing sheet is bonded to the frame, and the display module is grounded to the frame through the conductive cloth, wherein the conductive cloth faces the bottom of the mounting groove and abuts against the bottom of the mounting groove.

2. The electronic device according to claim 1, characterized in that: The frame includes a main body, the mounting groove is provided in the main body, the display module is opposite to the main body and is arranged at a distance, a metal layer is provided on a side of the display module facing the main body, and the grounding component is sandwiched between the metal layer and the main body; The conductive cloth includes a first connecting portion and a second connecting portion, wherein the first connecting portion faces the metal layer, and a portion of the conductive cloth facing the bottom of the mounting groove is the second connecting portion.

3. The electronic device according to claim 2, characterized in that: The grounding assembly further includes an insulating film, which is disposed on a side of the first connecting portion away from the first elastic layer, and is sandwiched between the first connecting portion and the metal layer.

4. The electronic device according to claim 3, characterized in that: A conductive adhesive layer is provided on a side of the first connecting portion facing away from the reinforcing sheet, and the insulating film is bonded to the first connecting portion via the conductive adhesive layer.

5. The electronic device according to claim 2, characterized in that: The frame body further includes a frame portion, the frame portion includes an antenna segment, the notch of the mounting slot is rectangular, and the long side of the notch is parallel to the extension direction of the antenna segment; The first side of the elastic matrix faces the antenna segment, the second side of the elastic matrix is ​​away from the first side, the conductive cloth is coated on the outer surface of the first side, and / or the conductive cloth is coated on the outer surface of the second side.

6. The electronic device according to claim 2, characterized in that: The conductive fabric further includes a third connecting portion and a fourth connecting portion, and in a direction from the third connecting portion toward the fourth connecting portion, the second elastic layer is located between the third connecting portion and the fourth connecting portion; One side of the third connection portion is bonded to the reinforcing sheet, and the other side thereof is bonded to the main body. One side of the fourth connection portion is bonded to the reinforcing sheet, and the other side thereof is bonded to the main body.

7. The electronic device according to claim 6, characterized in that: The reinforcing sheet is provided with a first adhesive layer and a second adhesive layer on both sides along its thickness direction, the first elastic layer is bonded to the reinforcing sheet via the first adhesive layer, and the third connecting portion, the second elastic layer and the fourth connecting portion are all bonded to the reinforcing sheet via the second adhesive layer.

8. The electronic device according to claim 7, characterized in that: A fifth adhesive layer is provided on a side of the third connecting portion facing away from the reinforcing sheet, and the third connecting portion is bonded to the main body portion via the fifth adhesive layer; A sixth adhesive layer is provided on a side of the fourth connecting portion facing away from the reinforcing sheet, and the fourth connecting portion is bonded to the main body portion via the sixth adhesive layer.

9. The electronic device according to claim 2, characterized in that: A third adhesive layer is provided on the side of the first elastic layer facing away from the reinforcing sheet, and the first connecting portion is bonded to the first elastic layer via the third adhesive layer; a fourth adhesive layer is provided on the side of the second elastic layer facing away from the reinforcing sheet, and the second connecting portion is bonded to the second elastic layer via the fourth adhesive layer.

10. The electronic device according to claim 2, characterized in that: The orthographic projection of the second elastic layer on the first elastic layer is located within the outer contour of the first elastic layer; and the orthographic projection of the second connecting portion on the first connecting portion is located within the outer contour of the first connecting portion.

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