Electronic device
By setting a hollow area in the shielding layer, the problem of reduced antenna radiation aperture caused by narrow bezel screens is solved, improving the performance of near-field wireless communication antennas. Moreover, the modification is small and easy to implement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-03
AI Technical Summary
Narrow bezel screens reduce the radiating aperture of near-field wireless communication antennas, affecting antenna performance.
By creating a perforated area in the shielding layer, the electromagnetic energy of the coil can be radiated through the perforated area of the shielding layer and out through the trace gaps in the display layer, thereby improving antenna performance.
The narrower screen bezels improve the performance of the near-field wireless communication antenna while requiring minimal modifications to the screen module and electronic devices, making it easy to implement.
Smart Images
Figure CN224082683U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of antenna technology, and in particular to electronic devices. Background Technology
[0002] Near Field Communication (NFC) has become a standard feature in electronic devices. An NFC tag is an electronic tag with NFC circuitry and an antenna. It operates on an inductive, passive principle, receiving excitation signals from a reader within its sensing area and responding to the reader. When an NFC tag is placed near an NFC reader, the reader senses the magnetic field emitted by the tag and reads the data and information stored inside the tag by modulating and demodulating the signals.
[0003] In related technologies, the magnetic field of near-field wireless communication antennas needs to be radiated through the metal-free area of the screen bezel of electronic devices. However, narrow bezel screens reduce the radiating aperture of near-field wireless communication antennas, affecting antenna performance. Utility Model Content
[0004] This disclosure provides an electronic device to solve related technical problems.
[0005] An electronic device is provided according to embodiments of the present disclosure, including: a motherboard, a screen module, and a near-field wireless communication antenna;
[0006] The near-field wireless communication antenna includes a coil and a circuit board, and the circuit board is electrically connected to the coil and the main board respectively.
[0007] The screen module includes a display layer and a shielding layer stacked together, with the coil and the shielding layer located on the same side of the display layer; the shielding layer has a cutout area, and the projection of the cutout area in the thickness direction of the screen module covers at least a portion of the coil.
[0008] Optionally, the screen module further includes a buffer layer located between the coil and the shielding layer; the buffer layer has an avoidance notch, and the projection of the avoidance notch in the thickness direction of the screen module covers the hollow area.
[0009] Optionally, the clearance notch is located at the edge of the buffer layer, and a notch is formed at the edge.
[0010] Optionally, the screen module includes a corner area, and the cutout area is disposed in the corner area.
[0011] Optionally, the screen module includes at least two corner areas and a side area located between adjacent corner areas, and the cutout area is disposed in the side area.
[0012] Optionally, the coil and the display layer are located on opposite sides of the shielding layer;
[0013] Alternatively, at least a portion of the coil may be located in the hollowed-out area.
[0014] Optionally, the hollowed-out area includes a circle with a radius greater than or equal to 10 mm and less than or equal to 16 mm.
[0015] Optionally, the screen module includes a speaker bracket, and the coil is assembled to the speaker bracket.
[0016] Optionally, one end of the circuit board is provided with a spring probe, and the circuit board and the motherboard are electrically connected through the spring probe.
[0017] Optionally, the screen module includes a cover plate layer covering the display layer; the shielding layer includes a first edge, the cover plate layer includes a second edge adjacent to the first edge, and the electromagnetic radiation aperture formed between the first edge and the second edge is less than or equal to 2.15 mm.
[0018] The technical solution provided in this disclosure can achieve at least the following beneficial effects:
[0019] This disclosed screen module includes a display layer and a shielding layer stacked together, with a cutout area in the shielding layer. The projection of the cutout area along the thickness direction of the screen module covers at least a portion of the coil. The electromagnetic energy generated by the coil can radiate through the cutout area of the shielding layer and out through the wiring gaps in the display layer, improving the antenna performance of near-field wireless communication while narrowing the screen bezel. Furthermore, it requires minimal modification to the screen module and electronic devices and is easy to implement.
[0020] 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 specification. Attached Figure Description
[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.
[0022] Figure 1 This is a schematic diagram of the rear structure of an electronic device according to an exemplary embodiment of the present disclosure;
[0023] Figure 2 This is a schematic cross-sectional view of an electronic device according to an exemplary embodiment of the present disclosure;
[0024] Figure 3 This is a schematic diagram of the structure of a near-field wireless communication antenna according to an exemplary embodiment of this disclosure;
[0025] Figure 4 This is a schematic diagram of the rear structure of an electronic device according to another exemplary embodiment of the present disclosure.
[0026] Figure label:
[0027] Electronic device 1;
[0028] Screen module 11; shielding layer 111; cutout area 1111; display layer 112; buffer layer 113; clearance notch 1131;
[0029] Motherboard 12;
[0030] Near-field wireless communication antenna 13; coil 131; circuit board 132. Detailed Implementation
[0031] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0032] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0033] Near Field Communication (NFC) has become a standard feature in electronic devices. An NFC tag is an electronic tag with NFC circuitry and an antenna, operating on an inductive, passive principle. It receives excitation signals from a reader within its sensing area and responds to the reader. When an NFC tag is placed near an NFC reader, the reader senses the magnetic field emitted by the tag and reads the data and information stored inside the tag by modulating and demodulating the signals. In related technologies, the magnetic field of the NFC antenna needs to be radiated through the metal-free area of the electronic device's screen bezel. However, narrow bezel screens reduce the radiating aperture of the NFC antenna, affecting its performance.
[0034] This disclosure provides an electronic device. Figure 1 This is a schematic diagram of the rear structure of an electronic device according to an exemplary embodiment of the present disclosure. Figure 2This is a schematic cross-sectional view of an electronic device according to an exemplary embodiment of the present disclosure. Figure 3 This is a schematic diagram of the structure of a near-field wireless communication antenna according to an exemplary embodiment of this disclosure, as shown below. Figures 1-3 As shown, the electronic device 1 includes a motherboard 12, a screen module 11, and a near-field wireless communication antenna 13. The near-field wireless communication antenna 13 includes a coil 131 and a circuit board 132, with the circuit board 132 electrically connected to both the coil 131 and the motherboard 12. The screen module 11 includes a display layer 112 and a shielding layer 111 stacked together, with the coil 131 and the shielding layer 111 located on the same side of the display layer 112. The shielding layer 111 has a cutout area 1111, and the projection of the cutout area 1111 onto the thickness direction of the screen module 11 covers at least a portion of the coil 131.
[0035] The screen module 11 of the aforementioned electronic device 1 includes a display layer 112 and a shielding layer 111 stacked together. A cutout area 1111 is provided in the shielding layer 111, and the projection of the cutout area 1111 in the thickness direction of the screen module 11 covers at least a portion of the coil 131. The electromagnetic energy generated by the coil 131 can radiate out through the cutout area 1111 of the shielding layer 112 from the wiring gaps in the display layer 112. This improves the antenna performance of near-field wireless communication while narrowing the screen bezel, and requires minimal modification to the screen module 11 and the electronic device 1, making it easy to implement.
[0036] It should be noted that the hollow area 1111 can cover all coils 131 or only part of coils 131, depending on whether the expected radiation function of the near-field wireless communication antenna 13 can be achieved. This disclosure does not impose any limitations on this.
[0037] Furthermore, the aforementioned coil 131 and display layer 112 can be located on both sides of the shielding layer 111 to reduce the interference of the coil 131 on the structure and function of the screen module 11. Alternatively, at least a portion of the coil 131 can be located in the hollow area to reduce the space occupied by the coil 131 in the thickness direction and other directions of the electronic device, thereby improving the thinness and lightness of the electronic device 1.
[0038] In some embodiments, the screen module 11 further includes a buffer layer 113, which is located between the coil 131 and the shielding layer 111. The buffer layer 113 has an avoidance notch 1131, the projection of which covers the hollow area 1111 in the thickness direction of the screen module 11. The buffer layer 113 of the screen module 11 can provide buffer protection for the components of the screen module 11. The buffer layer 113 is located between the shielding layer 111 and the coil 131. The avoidance notch 1131 on the buffer layer 113 can prevent interference with electromagnetic energy passing through the hollow area 1111, thereby improving the radiation efficiency of the near-field wireless communication antenna.
[0039] The clearance notch 1131 can be located at the edge of the buffer layer 113, forming a notch at the edge. The clearance notch 1131, being a notch at the edge of the buffer layer 113, reduces interference with the structure and function of the buffer layer 113 and facilitates its processing. Furthermore, the buffer layer 113 can be a foam layer disposed within the screen module 11.
[0040] In some embodiments, the screen module 11 includes a corner region, and a cutout region 1111 is disposed in the corner region. Disposing the cutout region 1111 in the corner region of the screen module 11 can reduce the interference of the cutout region 1111 on the overall shielding effect and strength of the screen module 11, and reduce the impact of electromagnetic energy passing through the display layer 112 on the overall display performance, thereby improving the overall performance of the screen module 11.
[0041] In other embodiments, the screen module 11 includes at least two corner regions and a side region located between adjacent corner regions, with a cutout region 1111 disposed in the side region. Distributing the cutout region 1111 in the side region of the screen module 11 can also reduce the interference of the cutout region 1111 on the overall shielding effect and strength of the screen module 11, and reduce the impact of electromagnetic energy passing through the display layer 112 on the overall display performance, thereby improving the overall performance of the screen module 11.
[0042] In other embodiments, in order to cooperate with the use of the near-field wireless communication antenna 13, the cutout area 1111 may also be set in other positions of the screen module 11, and this disclosure does not limit this.
[0043] In the above embodiment, the area of the hollow region 1111 is greater than or equal to 440 mm². 2 and less than or equal to 540mm 2 By limiting the area of the hollowed-out region 1111 to be greater than or equal to 440mm², 2 and less than or equal to 540mm 2 Within a certain range, sufficient radiation space can be provided for the coil 131 of the near-field wireless communication antenna 13 while ensuring the strength and shielding effect of the shielding layer 111, thereby improving the performance of the near-field wireless communication antenna 13.
[0044] In some embodiments, the hollow area 1111 can be circular, with a radius greater than or equal to 10 mm and less than or equal to 16 mm, providing sufficient radiation space for the coil 131 of the near-field wireless communication antenna 13 while ensuring the strength and shielding effect of the shielding layer 111, thereby improving the performance of the near-field wireless communication antenna 13.
[0045] Alternatively, the hollowed-out area 1111 can also be rectangular, elliptical or other irregular shapes, and this disclosure does not limit it.
[0046] In some embodiments, the screen module 11 includes a speaker bracket, and the coil 131 is assembled to the speaker bracket. The speaker bracket of the screen module 11 enables the assembly and fixation of the coil 131, reducing the structural and space occupation caused by additional mounting structures for the coil 131 and improving the structural utilization of the screen module 11. The coil 131 can be attached to the speaker bracket.
[0047] In the above embodiment, a spring probe is provided at one end of the circuit board 132. The circuit board 132 and the main board 12 are electrically connected through the spring probe. The interconnection scheme using the spring probe as the conductive medium helps to improve the signal transmission accuracy.
[0048] In some embodiments, the screen module 11 includes a cover layer covering the display layer 112, the shielding layer 111 includes a first edge, the cover layer includes a second edge adjacent to the first edge, and the electromagnetic radiation aperture formed between the first edge and the second edge is less than or equal to 2.15 mm. By adopting the scheme of setting a hollow area 1111 in the shielding layer 111 in the above embodiments of this disclosure, the requirement for the distance between the first and second edges on the electromagnetic radiation aperture of the near-field wireless communication antenna 13 can be reduced, thus reducing the bezel width of the screen module 11. For example, when the electromagnetic radiation aperture is reduced from 4.35 mm to 2.15 mm, good performance of the near-field wireless communication antenna 13 can still be obtained.
[0049] The aforementioned electronic device 1 may be a mobile phone, tablet computer, vehicle terminal, medical terminal, etc., and this disclosure does not impose any restrictions on it.
[0050] like Figure 4 As shown, taking electronic device 1 as a tablet computer as an example, the near-field wireless communication antenna 13 coil 131 is located on the lower right side of the tablet computer. By lightly touching the area where the coil 131 is located in the lower right corner of the tablet computer with a mobile phone, the mobile phone screen can be projected onto the tablet computer. At the same time, mobile phone files can be transferred to the tablet computer. This built-in transfer portal is convenient and efficient.
[0051] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. An electronic device, characterized in that, include: Motherboard (12), screen module (11) and near-field wireless communication antenna (13); The near-field wireless communication antenna (13) includes a coil (131) and a circuit board (132), and the circuit board (132) is electrically connected to the coil (131) and the main board (12) respectively; The screen module (11) includes a display layer (112) and a shielding layer (111) stacked together. The coil (131) and the shielding layer (111) are located on the same side of the display layer (112). The shielding layer (111) has a hollow area (1111). The projection of the hollow area (1111) in the thickness direction of the screen module (11) covers at least a portion of the coil (131).
2. The electronic device according to claim 1, characterized in that, The screen module (11) further includes a buffer layer (113), which is located between the coil (131) and the shielding layer (111); the buffer layer (113) is provided with a clearance notch (1131), and the projection of the clearance notch (1131) in the thickness direction of the screen module (11) covers the hollow area (1111).
3. The electronic device according to claim 2, characterized in that, The clearance gap (1131) is located at the edge of the buffer layer (113) and forms a gap at the edge.
4. The electronic device according to claim 1, characterized in that, The screen module (11) includes a corner area, and the hollow area (1111) is disposed in the corner area.
5. The electronic device according to claim 1, characterized in that, The screen module (11) includes at least two corner areas and a side area located between adjacent corner areas, and the hollow area (1111) is disposed in the side area.
6. The electronic device according to claim 1, characterized in that, The coil (131) and the display layer (112) are located on both sides of the shielding layer (111); Alternatively, at least a portion of the coil (131) may be located in the cutout area (1111).
7. The electronic device according to claim 1, characterized in that, The hollow area (1111) includes a circle with a radius greater than or equal to 10 mm and less than or equal to 16 mm.
8. The electronic device according to claim 1, characterized in that, The screen module (11) includes a speaker bracket, and the coil (131) is assembled to the speaker bracket.
9. The electronic device according to claim 1, characterized in that, One end of the circuit board (132) is provided with a spring probe, and the circuit board (132) and the main board (12) are electrically connected through the spring probe.
10. The electronic device according to claim 1, characterized in that, The screen module (11) includes a cover plate layer covering the display layer (112); the shielding layer (111) includes a first edge, the cover plate layer includes a second edge adjacent to the first edge, and the electromagnetic radiation aperture formed between the first edge and the second edge is less than or equal to 2.15 mm.