Electronic device
By setting a metal radiator inside the decorative lens and using a metal director layer to enhance the radiation effect, the problem of antenna radiation performance being affected by the material was solved, the strength of the decorative lens and the radiation gain of the antenna were improved, and compatibility was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-07-03
Smart Images
Figure CN224458592U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of terminal technology, and more particularly to an electronic device. Background Technology
[0002] Electronic devices with unibody metal casings boast an exceptional aesthetic appeal, but this also prevents the placement of antennas on the bezel. Therefore, most devices now house antennas internally, radiating them through a camera cutout on the back cover.
[0003] The material of the decorative panel installed in the decorative hole will affect the radiation performance of the antenna. If the strength of the decorative panel is not strong enough, it will easily cause top printing problems. Therefore, how to reconcile the strength of the decorative panel with the radiation effect of the antenna has become the focus of research. Utility Model Content
[0004] This disclosure provides an electronic device to address the shortcomings of the related art.
[0005] According to a first aspect of the present disclosure, an electronic device is provided, comprising:
[0006] Rear cover, the rear cover including camera mounting holes;
[0007] A decorative lens is attached to the rear cover and covers the camera mounting hole;
[0008] An antenna located inside the decorative lens, the antenna comprising a metal radiator;
[0009] The decorative lens includes a metal director layer spaced apart from the metal radiator. The metal director layer is used to be excited by the metal radiator, and the phase difference between the magnetic field of the metal radiator and the magnetic field of the metal director layer in the radiation direction is less than or equal to a set threshold.
[0010] Optionally, the metal director layer includes a gap extending to the edge of the metal director layer;
[0011] In the thickness direction of the electronic device, at least a portion of the projection of the metal radiator lies within the projection of the slit.
[0012] Optionally, the projection of the metal radiator is entirely located within the projection of the fracture.
[0013] Optionally, the thickness of the metal director layer is less than or equal to 100 μm.
[0014] Optionally, the metal content in the metal director layer is 90% or more.
[0015] Optionally, the decorative lens further includes an ink layer disposed on the surface of the metal director layer facing the metal radiator.
[0016] Optionally, the decorative lens further includes a UV transfer layer, and the metal guide layer is disposed between the UV transfer layer and the ink layer.
[0017] Optionally, the metal director layer includes an indium layer.
[0018] Optionally, the antenna further includes an antenna support, and the metal radiator is disposed on the surface of the antenna support facing the decorative lens.
[0019] Optionally, the antenna may include an LDS antenna or an FPC antenna.
[0020] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:
[0021] As can be seen from the above embodiments, this disclosure uses a metal director layer to guide the direction of electromagnetic waves, increasing the antenna gain in that direction. Moreover, due to the metal material of the metal director layer, the strength of the decorative lens can be improved, which helps to solve the problem of top printing on the decorative lens, so that the decorative lens can be compatible in strength and have a positive impact on antenna radiation.
[0022] 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
[0023] 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.
[0024] Figure 1 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment.
[0025] Figure 2 yes Figure 1 A schematic diagram of a partial cross-section of an electronic device.
[0026] Figure 3 This is a schematic diagram illustrating the position between a metal director layer and an antenna according to an exemplary embodiment.
[0027] Figure 4 yes Figure 3 The back view.
[0028] Figure 5 This is a cross-sectional schematic diagram of a decorative lens according to an exemplary embodiment.
[0029] Figure 6 The diagram shows the orientation of the decorative lens with and without a metal director layer.
[0030] Figure 7 The diagram shows a comparison of antenna radiation efficiency with and without a metal director layer, as illustrated in the image. Detailed Implementation
[0031] 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 decorations and methods consistent with some aspects of this disclosure as detailed in the appended claims.
[0032] 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.
[0033] 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."
[0034] Figure 1 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 2 yes Figure 1 A schematic diagram of a partial cross-section of an electronic device. (e.g.) Figure 1 and Figure 2 As shown, the electronic device includes a back cover 1, a decorative lens 2, and an antenna 3. The back cover 1 can be a unibody metal design, providing a sleek and aesthetically pleasing appearance. The back cover 1 may include a camera mounting hole 11, through which the camera configured in the electronic device can collect light for imaging. The decorative lens 2 is connected to the back cover 1 and covers the camera mounting hole 11, providing dust and water protection. Of course, for the camera to successfully collect light, the decorative lens 2 needs to be a light-transmitting element. Figure 3 and Figure 4The antenna 3 shown is located inside the decorative lens 2, that is, on the side of the decorative lens 2 facing the electronic device. The antenna 3 includes a metal radiator 31. After a signal is fed in, the metal radiator 31 can be excited to generate a current, thereby radiating electromagnetic wave signals. The antenna 3 also includes an antenna support 32. The metal radiator 31 is disposed on the surface of the antenna support 32 facing the decorative lens 2. The antenna support 32 is a plastic support. For example, the antenna may include an LDS (Laser-Direct-structuring) antenna or an FPC (Flexible Printed Circuit) antenna.
[0035] Among them, such as Figure 5 As shown, the decorative lens 2 includes a metal director layer 21 facing the metal radiator 31, and no other metal components are disposed between the metal director layer 21 and the metal radiator 31, such as... Figure 3 and Figure 4 As shown, the two elements are essentially parallel and spaced relatively close, perhaps around 0.8 mm. When a current is generated on the fed metal radiator 31, it couples to the metal director layer 21, exciting it to generate electromagnetic waves. This generates alternating magnetic and electric fields in the space surrounding the metal director layer 21. Furthermore, in the radiation direction, the phase difference between the magnetic field of the metal radiator 31 and the magnetic field of the metal director layer 21 is less than or equal to a set threshold, such as 0° or less than 10°. This enhances the combined magnetic field strength of the two elements.
[0036] For example, taking the radiation direction as the direction of the back cover 1, the magnetic field of the metal radiator 31 and the magnetic field of the metal director layer 21 have a small phase difference in this direction. They can superimpose in space, increasing the strength of the combined field and resulting in stronger radiation in the radiation direction. Furthermore, since the metal director layer 21 is located in the radiation direction of the metal radiator 31, it can guide the electromagnetic wave direction, increasing the gain of the antenna 4 in this direction. Moreover, the metallic material of the metal director layer 21 enhances the strength of the decorative lens 2, helping to solve the problem of top printing on the decorative lens 2. Thus, the decorative lens 2 can balance strength and the radiation effect of the antenna 3.
[0037] For example, the metal director layer 21 may include an indium layer, which enhances the strength of the decorative lens 2 while simultaneously improving the radiation directionality of the metal radiator 31. Figure 6 As shown, where Figure 6The left side shows the radiation pattern of the metal radiator 31 without an indium layer, and the right side shows the radiation pattern of the metal radiator 31 with an indium layer. Figure 6 It can be seen that after the indium layer is set, the direction of the metal radiator 31 is closer to that of a sphere, and its radiation is more omnidirectional. Figure 7 The graph shows the radiation efficiency curves of the metal radiator 31 with and without the indium layer. The blue curve represents the radiation efficiency curve of the metal radiator 31 without the indium layer, and the red curve represents the radiation efficiency curve of the metal radiator 31 with the indium layer. It is clear that the overall radiation performance of the metal radiator 31 is improved after the indium layer is added.
[0038] Regarding the position of the metal guide layer 21 within the decorative lens 2, in some embodiments, it is still... Figure 5 As shown, the decorative lens 2 also includes an ink layer 22, which is disposed on the surface of the metal director layer 21 facing the metal radiator 31. That is, an ink layer 22 is also disposed between the metal radiator 31 and the metal director layer 21. Due to the non-metallic nature of this ink layer 22, it has virtually no impact on the radiation of the metal radiator 31. The ink layer 22 may include multiple layers of ink, each of which can be glossy black or matte black, for example, it may include two glossy black layers and one matte black layer to enhance the appearance of the decorative lens 2. Further, still using... Figure 5 As shown, the decorative lens 2 also includes a UV transfer layer 23. The metal guide layer 21 is disposed between the UV transfer layer 23 and the ink layer 22 and contacts the ink layer 22 and the UV transfer layer 23 respectively. The texture of the decorative lens 2 can be displayed through the UV transfer layer 23.
[0039] In some embodiments, to maximize the radiation performance of the metal radiator 31, the metal director layer 21 includes a slit 211 extending to the edge of the metal director layer 21, and at least a portion of the projection of the metal radiator 31 lies within the projection of the slit 211 in the thickness direction of the electronic device. This reduces the obstruction of the metal radiator 31 by the metal director layer 21, which is beneficial for improving the radiation performance of the antenna 3. For example, in the thickness direction of the electronic device, the entire projection of the metal radiator 31 can be located within the projection of the slit 211 to maximize the radiation performance of the metal radiator 31; or, in the thickness direction of the electronic device, a portion of the projection of the metal radiator 31 can be located within the projection of the slit 211, reducing design requirements and increasing the strength of the decorative lens 2. Of course, other edge shapes or slit shapes of the metal director layer 21 can be adaptively designed according to the shape of the metal radiator 31, its radiation performance, and the appearance of the decorative lens 2.
[0040] In some embodiments, the thickness of the metal director layer 21 may be less than or equal to 100 μm, thereby ensuring that the radiation signal of the metal radiator 31 can penetrate the metal director layer 21 and radiate outward, reducing performance loss. In some embodiments, the metal content in the metal director layer 21 is 90% or more, so as to improve the strength of the decorative lens 2 by increasing the metal purity, which is beneficial to balance the strength of the decorative lens 2 and the radiation performance of the metal radiator 31 when a thinner metal director layer 21 is provided.
[0041] 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.
[0042] 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. An electronic device, comprising: include: Rear cover, the rear cover including camera mounting holes; A decorative lens is attached to the rear cover and covers the camera mounting hole; An antenna located inside the decorative lens, the antenna comprising a metal radiator; The decorative lens includes a metal director layer spaced apart from the metal radiator. The metal director layer is used to be excited by the metal radiator, and the phase difference between the magnetic field of the metal radiator and the magnetic field of the metal director layer in the radiation direction is less than or equal to a set threshold.
2. The electronic device of claim 1, wherein, The metal director layer includes a gap extending to the edge of the metal director layer; In the thickness direction of the electronic device, at least a portion of the projection of the metal radiator lies within the projection of the slit.
3. The electronic device of claim 2, wherein, The projection of the metal radiator lies entirely within the projection of the fracture.
4. The electronic device of claim 1, wherein, The thickness of the metal director layer is less than or equal to 100 μm.
5. The electronic device of claim 1, wherein, The metal content in the metal director layer is over 90%.
6. The electronic device of claim 1, wherein, The decorative lens also includes an ink layer disposed on the surface of the metal director layer facing the metal radiator.
7. The electronic device of claim 6, wherein, The decorative lens also includes a UV transfer layer, and the metal guide layer is disposed between the UV transfer layer and the ink layer.
8. The electronic device of claim 1, wherein, The metal director layer includes an indium layer.
9. The electronic device of claim 1, wherein, The antenna also includes an antenna support, and the metal radiator is disposed on the surface of the antenna support facing the decorative lens.
10. The electronic device of claim 1, wherein, The antenna includes an LDS antenna or an FPC antenna.