Terminal back cover and electronic devices

Abstract

This disclosure relates to a terminal back cover and an electronic device. The terminal back cover includes: a back cover body, the back cover body including an opening; a metal decorative frame, the metal decorative frame being connected to the back cover body and covering the opening, the metal decorative frame including a groove and at least one light-passing port, the groove and each of the light-passing ports being spaced apart; and a UWB antenna, the UWB antenna being embedded in the groove.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and more particularly to a terminal back cover and an electronic device. Background Technology

[0002] In recent years, with the maturity of UWB technology solutions and the reduction in costs, and based on the accurate indoor positioning function of UWB technology, major manufacturers have tried to apply UWB antennas to the terminal devices that users need in their daily lives, such as mobile phones, in order to improve the shortcomings of current mobile phones in poor positioning in tunnels or indoors. Summary of the Invention

[0003] This disclosure provides a terminal back cover and an electronic device to address the shortcomings of related technologies.

[0004] According to a first aspect of the present disclosure, a terminal back cover is provided, comprising:

[0005] A rear cover body, the rear cover body including an opening;

[0006] A metal decorative frame, which is connected to the back cover body and covers the opening, the metal decorative frame includes a groove and at least one light-passing opening, the groove and each light-passing opening being spaced apart;

[0007] The UWB antenna is embedded in the slot.

[0008] Optionally, the UWB antenna includes a conductive element, a dielectric substrate, and a metal ground plane. The conductive element is disposed on one side of the dielectric substrate, and the metal ground plane is disposed on the opposite side of the dielectric substrate. The groove includes a through groove, and the UWB antenna is disposed in the through groove.

[0009] Optionally, the UWB antenna includes a conductive element and a dielectric substrate, wherein the conductive element is disposed on one side of the dielectric substrate;

[0010] The groove includes a recess, the bottom wall of which is attached to the side of the dielectric substrate opposite to the conductive unit, and the UWB antenna is grounded through the metal decorative frame.

[0011] Optionally, the conductive unit includes multiple elongated grooves recessed inward from at least one side edge.

[0012] Optionally, the UWB antenna operates on the fifth and ninth channels of the UWB band, with the center frequency of the fifth channel around 6.5 GHz and the center frequency of the ninth channel around 8 GHz.

[0013] Optionally, each of the conductive units is substantially square in shape, and the equivalent length of the conductive unit in the first direction is half the wavelength of the center frequency of the fifth channel, and the equivalent length of the conductive unit in the second direction is half the wavelength of the center frequency of the ninth channel, wherein the first direction and the second direction are substantially perpendicular.

[0014] Optionally, each of the conductive units is generally square in shape, and the corners of the conductive units are used for electrical connection with the power supply terminal.

[0015] Optionally, the dielectric substrate includes a liquid crystal polymer substrate.

[0016] Optional, also includes:

[0017] A protective sheet is disposed on one side of the metal decorative frame and covers the metal decorative frame.

[0018] According to a second aspect of the present disclosure, an electronic device is provided, comprising:

[0019] A camera module, the camera module including at least one lens;

[0020] As described in any of the above embodiments, each light-passing port corresponds to at least one of the lens settings.

[0021] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0022] As can be seen from the above embodiments, in the technical solution of this disclosure, the UWB antenna is configured on the metal decorative frame of the terminal back cover. Based on this, when the terminal back cover is configured on the electronic device, since the metal decorative frame is usually the last metal structure on the back of the electronic device, there are usually no other metal parts blocking it. Therefore, the obstruction of other metal parts can be avoided from affecting the radiation of the UWB antenna. At the same time, compared with the related technology, the influence of the metal decorative frame itself on the gain in various directions when the UWB antenna radiates outward can be avoided.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0025] Figure 1 This is a schematic diagram of the structure of a terminal back cover according to an exemplary embodiment.

[0026] Figure 2 This is a cross-sectional schematic diagram of a terminal back cover according to an exemplary embodiment.

[0027] Figure 3 This is a schematic diagram illustrating the assembly of a metal decorative frame and a UWB antenna according to an exemplary embodiment.

[0028] Figure 4 yes Figure 1 Radiation gain diagram of a UWB antenna.

[0029] Figure 5 This is a schematic diagram illustrating the assembly of another metal decorative frame and a UWB antenna according to an exemplary embodiment.

[0030] Figure 6 This is a top view schematic diagram of a UWB antenna according to an exemplary embodiment.

[0031] Figure 7 This is a top view schematic diagram of an electronic device according to an exemplary embodiment.

[0032] Figure 8 yes Figure 7 Side view of an electronic device. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0034] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0035] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0036] Figure 1 This is a schematic diagram of the structure of a terminal back cover 100 according to an exemplary embodiment. Figure 2 This is a cross-sectional schematic diagram of a terminal back cover 100 according to an exemplary embodiment. Figure 3 This is a schematic diagram illustrating the assembly of a metal decorative frame 2 and a UWB (Ultra Wide Band, UWB) antenna 3 according to an exemplary embodiment. Figure 1 and Figure 2 As shown, the terminal back cover 100 may include a back cover body 1, a metal decorative frame 2, and a UWB antenna 3. The metal decorative frame 2 can be connected to the back cover body 1 to decorate the camera module of the electronic device configured on the terminal back cover 100. The back cover body 1 may include an opening 11 that extends through the back cover body 1, providing space for the assembly of the metal decorative frame 2. The opening 11 may be circular, square, or other shapes; this disclosure does not limit its shape. The back cover body 1 may be a metal back cover body, a plastic back cover body, or a glass back cover body; this disclosure does not limit its shape. The metal decorative frame 2 can be connected to the back cover body 1 and can cover the opening 11. For example, the metal decorative frame 2 can be connected to the inner ring of the opening 11, or the metal decorative frame 2 can be connected to the outer side of the back cover body 1 surrounding the opening 11. The metal decorative frame 2 can include a groove 21 and at least one light-passing port 22. The groove 21 and each light-passing port 22 are spaced apart. The UWB antenna 3 can be embedded in the groove 21.

[0037] like Figure 3 As shown, the UWB antenna 3 can be embedded in the slot 21 and assembled with the metal decorative frame 2. Furthermore, in the depth direction of the light-passing port 22, the orthographic projection of each light-passing port 22 can be separated from the orthographic projection of the UWB antenna 3. That is, the UWB antenna 3 will not cover the light-passing port 22, thus preventing the UWB antenna 3 from blocking light from passing through the light-passing port 22 and affecting the imaging of the electronic device subsequently configured with the terminal back cover 100. In the technical solution of this disclosure, the UWB antenna 3 is configured on the metal decorative frame 2 of the terminal back cover 100. Based on this, when the terminal back cover 100 is configured on the electronic device, since the metal decorative frame 2 is usually the last metal structure on the back of the electronic device, there are usually no other metal parts obstructing it. Therefore, the obstruction of other metal parts can avoid affecting the radiation of the UWB antenna 3. At the same time, compared with related technologies, the influence of the metal decorative frame 2 itself on the gain of the UWB antenna 3 in various directions during outward radiation can be avoided. For example, Figure 4 As shown, within a 180° space outward from the UWB antenna 3, the gain changes smoothly in all directions without distortion.

[0038] In some embodiments, such as Figure 3 As shown, the groove 21 may include a through groove that can extend along the depth direction of the light port or the height direction of the metal decorative frame 2. The UWB antenna 3 may include a conductive unit 31, a dielectric substrate 32, and a metal ground plane 33. The conductive unit 31 may be disposed on one side of the dielectric substrate 32, while the metal ground plane 33 may be disposed on the side of the dielectric substrate 32 opposite to the conductive unit 31. Based on the through groove, the UWB antenna 3 can be disposed within the through groove, and the metal ground plane 33 is exposed relative to the rear cover body 1, thereby facilitating the grounding of the metal ground plane 33.

[0039] In other embodiments, such as Figure 5 As shown, the UWB antenna 3 may include a conductive unit 31 and a dielectric substrate 32. The conductive unit 31 may be disposed on one side of the dielectric substrate 32. The groove 21 may include a recess, and the opening of the recess faces the inner or outer side of the upper terminal back cover 100. The UWB antenna 3 is disposed in the recess, and the bottom wall of the recess may be attached to the side of the dielectric substrate 32 away from the conductive unit 31. This allows the UWB antenna 3 to be attached to the metal decorative frame 2, and the UWB antenna 3 can be grounded through the metal decorative frame 2, which helps to simplify the structure of the UWB antenna 3 itself.

[0040] In the above embodiments, the dielectric substrate 32 may include a liquid crystal polymer substrate, which maintains a substantially similar dielectric constant at various frequencies, exhibiting good consistency. One or more identical conductive units 31 may be disposed on the same dielectric substrate 32, and the multiple conductive units 31 may be arranged at intervals. Figure 6 As shown, the conductive unit 31 may include multiple elongated grooves 311 recessed inward from the edge, for example in... Figure 6 In this embodiment, assuming the conductive unit 31 is basically square-shaped, each edge of the conductive unit 31 can be provided with an elongated groove 311 recessed inward from the edge. The elongated groove 311 helps to extend the current path length on the conductive unit 31, effectively increasing the length of the conductive unit 31 in the horizontal or vertical direction. Therefore, when radiating signals of the corresponding frequency band through the half-wavelength mode or other wavelength modes in the horizontal or vertical direction of the conductive unit 31, compared to the solution achieved through physical dimensions, the present disclosure increases the effective length of the conductive unit 31 by using elongated grooves, which is beneficial for miniaturization of the conductive unit 31 and more suitable for arranging the UWB antenna 3 in the narrow space of the rear cover body 1. Figure 6In the illustrated embodiment, the number and size of the elongated grooves 311 formed on each edge of the conductive unit 31 are the same. In fact, in other embodiments, the elongated grooves 311 can be specifically designed according to the physical size of the conductive unit 31 itself, the required radiation frequency band and the radiation mode adopted. The number and size of the elongated grooves 311 formed on each edge are not limited in this disclosure.

[0041] In the above embodiments, the terminal back cover 100 may further include a protective sheet 4. The protective sheet 4 may be disposed on one side of the metal decorative frame 2 and cover the metal decorative frame 2. When the terminal back cover is configured on the electronic device, the protective sheet 4 is located outside the electronic device to protect the lens of the electronic device's camera module and the metal decorative frame 2, reducing scratches. Of course, in order not to affect the light transmission of the camera module, the protective sheet 4 may be a light-transmitting protective sheet.

[0042] Currently, the operating frequency band radiated by UWB antenna 3 can be within the internationally defined UWB frequency band. In one UWB frequency band allocation method, the UWB frequency band can include the frequency band around 3GHz-9GHz, and this UWB frequency band can be divided into fifteen channels. Among them, the bandwidth of the fourth channel is 1331.2MHz, the bandwidth of the seventh channel is 1081.6MHz, the bandwidth of the eleventh channel is 1331.2MHz, the bandwidth of the fifteenth channel is 1354.97MHz, and the bandwidth of the other channels can all be 499.2MHz. Among them, the UWB antenna 3 in this disclosure can operate on the fifth and ninth channels of the UWB frequency band. The center frequency of the fifth channel can be around 6.5GHz, and according to the above channel allocation method, the center frequency of the fifth channel can be 6.4896GHz. The center frequency of the ninth channel is around 8GHz, and according to the above channel allocation method, the center frequency of the fifth channel can be 7.9872GHz. This can meet the frequency band requirements for indoor precise positioning using UWB antenna 3.

[0043] Specifically, each conductive unit 31 disposed on the dielectric substrate 32 can be arranged in a square shape. The equivalent length of the conductive unit 31 in the first direction is half the wavelength of the center frequency of the fifth channel, and the equivalent length of the conductive unit 31 in the second direction is half the wavelength of the center frequency of the ninth channel. The first direction and the second direction are substantially perpendicular. For example, the first direction can be... Figure 6 The left and right directions in the middle, the second direction can be Figure 6In the vertical direction, when an elongated groove is formed at the edge of the conductive unit 31, the equivalent length in the first direction should be the same as the length after taking the elongated groove into account. Similarly, the equivalent length in the second direction should be the same as the length after taking the elongated groove 311 into account. When the conductive unit 31 does not form an elongated groove 311, the equivalent length is related to the physical size of the conductive unit 31 itself.

[0044] In the above embodiments, each conductive unit 31 can be basically square in shape, and the corners of the conductive unit 31 can be used to electrically connect with the feed terminal to achieve feeding. Setting the corners of the conductive unit 31 as feed points connected to the feed terminal is beneficial for the current to flow in different directions to cover the fifth and ninth channels where the UWB antenna 3 operates. When multiple conductive units 31 are arranged on the same dielectric substrate 32, the multiple conductive units 31 can be electrically connected to the feed terminal respectively.

[0045] Based on the terminal back cover 100 disclosed in the above embodiments, such as Figures 7-8 As shown, this disclosure also provides an electronic device 200, which may include a camera module 201 and the terminal back cover 100 described in any of the above embodiments. The camera module 201 may include at least one lens, and the light-passing port 22 on the metal decorative frame 2 of the terminal back cover 100 may correspond to one or more lenses, through which the lenses can collect light to form an image. The electronic device 200 may include a mobile phone terminal, a tablet terminal, or a wearable device, etc., and this disclosure does not impose any limitations on this.

[0046] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0047] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A terminal back cover, characterized in that, include: A rear cover body, the rear cover body including an opening; A metal decorative frame, which is connected to the back cover body and covers the opening, the metal decorative frame includes a groove and at least one light-passing opening, the groove and each light-passing opening being spaced apart; UWB antenna, which is embedded in the slot; The UWB antenna includes a conductive element and a dielectric substrate, wherein the conductive element is disposed on one side of the dielectric substrate; The groove includes a recess, the bottom wall of which is attached to the side of the dielectric substrate opposite to the conductive unit, and the UWB antenna is grounded through the metal decorative frame.

2. The terminal back cover according to claim 1, characterized in that, The conductive unit includes multiple elongated grooves recessed inward from at least one edge.

3. The terminal back cover according to claim 1, characterized in that, The UWB antenna operates on the fifth and ninth channels of the UWB band, with the center frequency of the fifth channel around 6.5 GHz and the center frequency of the ninth channel around 8 GHz.

4. The terminal back cover according to claim 3, characterized in that, Each of the conductive units is basically square in shape. The equivalent length of the conductive unit in the first direction is half the wavelength of the center frequency of the fifth channel, and the equivalent length of the conductive unit in the second direction is half the wavelength of the center frequency of the ninth channel. The first direction and the second direction are basically perpendicular.

5. The terminal back cover according to claim 1, characterized in that, Each of the conductive units is basically square in shape, and the corners of the conductive units are used for electrical connection with the power supply terminal.

6. The terminal back cover according to claim 1, characterized in that, The dielectric substrate includes a liquid crystal polymer substrate.

7. The terminal back cover according to claim 1, characterized in that, Also includes: A protective sheet is disposed on one side of the metal decorative frame and covers the metal decorative frame.

8. An electronic device, characterized in that, include: A camera module, the camera module including at least one lens; The terminal back cover as described in any one of claims 1-7, wherein each light port corresponds to at least one of the lens settings.

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