Electronic device

Abstract

The utility model provides electronic equipment. The electronic equipment comprises a main board, a signal transmission line and an antenna board, the signal transmission line comprises a first end and a second end which are opposite, the first end is connected with the mainboard, and the second end is welded and fixed with the antenna plate. According to the electronic equipment provided by the invention, the signal transmission line and the antenna plate are welded and fixed, the signal transmission line and the antenna plate are integrated, and the signal transmission line and the antenna plate do not need to be connected through a BTB connector, so that the space is saved, the thickness of the electronic equipment is reduced, and the manufacturing process is simpler.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and particularly to an electronic device. Background Art

[0002] With the continuous progress of technology, mobile phones are constantly developing towards having more functions, lighter weight, and thinner thickness. At the same time, as the number of functional components in mobile phones increases, the space available for antenna layout in mobile phones is getting smaller and smaller.

[0003] Existing mobile phones usually include a main board, signal transmission lines, and an antenna board. The signal transmission lines are generally connected to the main board and the antenna board through BTB (board to board) connectors. However, the BTB connectors themselves will occupy a certain space, which is not conducive to the thin and light design of mobile phones; at the same time, the signal transmission lines are connected to the main board and the antenna board through BTB connectors, and the process is complex, which is not conducive to improving production efficiency. Utility Model Content

[0004] The purpose of this application is to provide an electronic device with a simple manufacturing process.

[0005] This application provides an electronic device, including: a main board, signal transmission lines, and an antenna board; the signal transmission lines include opposite first ends and second ends, the first ends are connected to the main board, and the second ends are fixedly welded to the antenna board.

[0006] Further, a plurality of grounding points are arranged on the antenna board, and the maximum distance between the plurality of grounding points and the second ends is less than or equal to 12.5 mm.

[0007] Further, along the thickness direction of the antenna board, the second ends partially overlap with the antenna board, and a plurality of through holes are arranged on the second ends for solder to pass through to fix the second ends to the antenna board.

[0008] Further, the signal transmission lines include a transmission line body and a coating layer that coats the transmission line body; the coating layer is made of modified polyimide or liquid crystal polymer; the through holes are arranged on the coating layer and on one side of the transmission line body; the antenna board further includes a connecting member, and the transmission line body is electrically connected to the antenna board through the connecting member.

[0009] Further, the minimum distance between the connecting member and the second ends is greater than or equal to 8 mm.

[0010] Further, a switch component is arranged on the antenna board, and the switch component is electrically connected to the signal transmission lines.

[0011] Further, it further includes a housing, the housing encloses a receiving cavity, and the main board, the signal transmission line and the antenna board are all located in the receiving cavity.

[0012] Further, the switch assembly includes a medium-high frequency band switch assembly and a low frequency band switch assembly; the medium-high frequency band switch assembly includes a first switch and a second switch, and the low frequency band switch assembly includes a third switch; one ends of the first switch and the second switch are respectively connected to the housing, and the opposite ends are respectively connected to the signal transmission line; one end of the third switch is connected to the housing, and the opposite end is connected to the signal transmission line.

[0013] Further, the housing includes a first housing and a second housing, one end of the first switch is connected to the first housing, one ends of the second switch and the third switch are respectively connected to the second housing, and there is a gap between the first housing and the second housing.

[0014] Further, the width of the gap is greater than or equal to 0.5 mm and less than or equal to 2 mm; the distance between the signal transmission line and the housing is greater than or equal to 5.6 mm.

[0015] The signal transmission line of the electronic device provided in the present application is fixedly welded to the antenna board, and the signal transmission line and the antenna board are integrated into one body. There is no need to connect the signal transmission line and the antenna board through a BTB connector, thereby saving space, reducing the thickness of the electronic device, and making the manufacturing process simpler.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. Brief Description of the Drawings

[0017] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0018] Figure 1 It is a schematic diagram of the main board, signal transmission line and antenna board of the electronic device of the present application.

[0019] Figure 2 is Figure 1 A schematic diagram after the signal transmission line and the antenna board shown are fixed.

[0020] Figure 3 It is a schematic diagram after the signal transmission line and the antenna board are fixed in another embodiment.

[0021] Figure 4 is Figure 1 A cross-sectional view of the signal transmission line shown.

[0022] Figure 5 It is a schematic diagram of the main board, signal transmission line, antenna board and switch assembly of the electronic device of the present application.

[0023] Figure 6 It is a schematic diagram of the housing, switch assembly and signal transmission line of the electronic device of the present application.

[0024] Description of the reference numerals: 1, main board; 2, signal transmission line; 201, through hole; 21, first end; 22, second end; 23, transmission line body; 24, coating layer; 3, antenna board; 31, grounding point; 32, solder joint; 4, connecting piece; 5, switch assembly; 51, medium and high frequency band switch assembly; 511, first signal source; 512, first switch; 513, second switch; 52, low frequency band switch assembly; 521, second signal source; 522, third switch; 6, housing; 61, first housing; 62, second housing; 63, gap. Detailed implementation manners

[0025] Next, the embodiments of this specification will be described in detail.

[0026] Here, in combination with the drawings, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described. When the following description involves the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0027] If there are terms related to directional indication or positional relationship in the embodiments of the present application (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 relationship and movement conditions between components in a specific posture (as shown in the drawings); if this specific posture changes, then the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0028] Please refer to Figure 1 As shown, the present application provides an electronic device, including: a main board 1, a signal transmission line 2 and an antenna board 3. The antenna board 3 can be a PCB (Printed Circuit Board) board. The signal transmission line 2 includes opposite first end 21 and second end 22. The first end 21 is connected to the main board 1 through a BTB (board-to-board) connector, and the second end 22 is fixedly soldered to the antenna board 3.

[0029] The electronic device provided by the present application can be a smart phone, a tablet computer and other devices, and the present application does not limit this.

[0030] The signal transmission line 2 of the electronic device provided by this application is integrated with the antenna board 3 by welding, and there is no need to connect the signal transmission line 2 and the antenna board 3 through a BTB connector, thus saving space, reducing the thickness of the electronic device, and making the manufacturing process simpler.

[0031] Please refer Figures 1 to 3 As shown, along the thickness direction of the antenna board 3, the second end 22 partially overlaps with the antenna board 3, and a plurality of through holes 201 are provided on the second end 22 for solder to pass through to fix the second end 22 to the antenna board 3.

[0032] In one embodiment, as Figure 2 shown, the second end 22 of the signal transmission line 2 is superimposed on the antenna board 3. The second end 22 can be located above the antenna board 3 or below the antenna board 3, and this application does not limit this. A plurality of through holes 201 are provided on the second end 22 for solder to pass through to fix the second end 22 to the antenna board 3.

[0033] At the contact position between the second end 22 and the antenna board 3, multiple solder joints 32 can be additionally provided. In addition to the solder passing through the through holes 201 to fix the second end 22 to the antenna board 3, the solder can also be provided on the solder joints 32 to fix the second end 22 to the antenna board 3, thereby further improving the connection stability between the second end 22 and the antenna board 3.

[0034] In another embodiment, as Figure 3 shown, the antenna board 3 is a multilayer board, and the second end 22 of the signal transmission line 2 is located in the inner layer of the antenna board 3. The through holes 201 penetrate the outer layer board of the antenna board 3 for solder to pass through to fix the second end to the antenna board 3.

[0035] Please refer Figure 4 shown, the signal transmission line 2 includes a transmission line body 23 and a coating layer 24 that coats the transmission line body 23. The coating layer 24 is made of a modified polyimide material or a liquid crystal polymer material with a lower dielectric constant and loss factor. Preferably, the coating layer 24 is made of a modified polyimide material.

[0036] The coating layer 24 made of the modified polyimide material has excellent high-temperature stability, good structural stability, and good ductility, enabling the coating layer 24 to be made thinner and lighter while still having stable structural strength, being easily stretchable and able to maintain its shape under large stresses. Using the modified polyimide material to make the coating layer 24 can save space and make the electronic device thinner and lighter.

[0037] Please refer Figures 3 to 5As shown, the through hole 201 is provided on the coating layer 24 and on one side of the transmission line body 23. When the through hole 201 is provided, it is necessary to avoid the transmission line body 23 to prevent damage and interference to the transmission line body 23 during welding. The antenna board 3 further includes a connecting member 4, and the transmission line body 23 is electrically connected to the antenna board 3 through the connecting member 4.

[0038] The connecting member 4 can be a conductive metal sheet, conductive rubber, conductive fiber, etc., and the present application does not limit this. The connecting member 4 is provided on the outer layer of the antenna board 3, and the transmission line body 23 is located on the inner layer of the antenna board 3 and is electrically connected to the connecting member 4. The minimum distance X1 between the connecting member 4 of the antenna board 3 and the second end 22 is greater than or equal to 8 mm.

[0039] A plurality of grounding points 31 are also provided on the antenna board 3, and the maximum distance X2 between the plurality of grounding points 31 and the second end 22 is less than or equal to 12.5 mm.

[0040] By controlling the minimum distance between the connecting member 4 and the second end 22 to be greater than or equal to 8 mm, and the maximum distance between the grounding point 31 and the second end 22 to be less than or equal to 12.5 mm, the influence of the signal transmission line 2 on the performance of the antenna board 3 when the signal transmission line 2 and the antenna board 3 are directly welded and fixed without passing through the BTB connector can be reduced. Through simulation analysis, the overall efficiency of the signal transmission line 2 and the antenna board 3 is -6 dB, which can meet the performance requirements of the antenna, so as to make the electronic device thinner and lighter while preventing problems such as signal instability when the user uses the electronic device.

[0041] Please refer Figure 5 and Figure 6 As shown, the electronic device provided by the present application further includes a frame body 6, and the frame body 6 encloses a receiving cavity, and the main board 1, the signal transmission line 2 and the antenna board 3 are all located in the receiving cavity.

[0042] A switch assembly 5 is further provided on the antenna board 3, and the signal transmission line 2 includes various transmission lines such as an antenna signal source line and a switch signal line. The switch assembly 5 is connected to the connecting member 4 by arranging a wire on the inner layer of the antenna board 3, so that the switch assembly 5 can be electrically connected to the switch signal line, thereby transmitting the switch signal to the antenna board 3, so that the antenna board 3 can switch between a low frequency band, a medium frequency band or a high frequency band.

[0043] The switch assembly 5 can be a double switch assembly or a triple switch assembly. The minimum distance between the switch assembly 5 and the second end 22 is controlled to be greater than or equal to 8 mm.

[0044] In one embodiment, the switch assembly is a double switch assembly (not shown). The double switch assembly enables the antenna board 3 to switch between a medium frequency band and a high frequency band, or between a medium frequency band and a low frequency band, or between a low frequency band and a high frequency band.

[0045] In another embodiment, the switch assembly is a three-switch assembly. The three-switch assembly includes a medium-high frequency band switch assembly 51 and a low frequency band switch assembly 52.

[0046] The medium-high frequency band switch assembly 51 includes a first switch 512 and a second switch 513. The low frequency band switch assembly 52 includes a third switch 522. One ends of the first switch 512 and the second switch 513 are respectively connected to the frame 6, and the opposite ends are respectively connected to the signal transmission line 2. One end of the third switch 522 is connected to the frame 6, and the opposite end is connected to the signal transmission line 2.

[0047] The medium-high frequency band switch assembly 51 further includes a first signal source 511, and the first signal source 511 is a medium-high frequency band signal source. The low frequency band switch assembly 52 further includes a second signal source 521, and the second signal source 521 is a low frequency band signal source. By controlling the opening and closing of the first switch 512, the second switch 513 and the third switch 522, the antenna board 3 can be switched between low, medium and high frequency bands when working.

[0048] The frame 6 includes a first frame 61 and a second frame 62. One end of the first switch 512 is connected to the first frame 61, and one ends of the second switch 513 and the third switch 522 are respectively connected to the second frame 62. There is a gap 63 between the first frame 61 and the second frame 62, so as to prevent interference between the medium and high frequency bands. Preferably, the width of the gap 63 needs to be greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0049] Since the frame 6 usually also has the function of an antenna, in order to prevent the signal transmission line 2 from interfering with the frame 6, the distance between the signal transmission line 2 and the frame 6 needs to be greater than or equal to 5.6 mm.

[0050] It should be noted that the technical solutions or technical 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 drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. An electronic device, characterized in that, Comprising: A main board, a signal transmission line, and an antenna board; the signal transmission line includes an opposite first end and a second end, the first end is connected to the main board, and the second end is fixedly welded to the antenna board.

2. The electronic device according to claim 1, wherein A plurality of grounding points are provided on the antenna board, and the maximum distance between the plurality of grounding points and the second end is less than or equal to 12.5 mm.

3. The electronic device according to claim 1, characterized in that Along the thickness direction of the antenna board, the second end partially overlaps with the antenna board, and a plurality of through holes are provided on the second end for solder to pass through to fix the second end to the antenna board.

4. The electronic device according to claim 3, wherein The signal transmission line includes a transmission line body and a coating layer covering the transmission line body; the coating layer is made of modified polyimide or liquid crystal polymer; the through holes are provided on the coating layer and on one side of the transmission line body; the antenna board further includes a connector, and the transmission line body is electrically connected to the antenna board through the connector.

5. The electronic device according to claim 4, wherein The minimum distance between the connector and the second end is greater than or equal to 8 mm.

6. The electronic device according to claim 1, wherein A switch assembly is provided on the antenna board, and the switch assembly is electrically connected to the signal transmission line.

7. The electronic device according to claim 6, wherein It further includes a housing, the housing encloses a receiving cavity, and the main board, the signal transmission line, and the antenna board are all located in the receiving cavity.

8. The electronic device according to claim 7, wherein The switch assembly includes a medium-high frequency band switch assembly and a low frequency band switch assembly; the medium-high frequency band switch assembly includes a first switch and a second switch, and the low frequency band switch assembly includes a third switch; one end of the first switch and the second switch are respectively connected to the housing, and the opposite ends are respectively connected to the signal transmission line; one end of the third switch is connected to the housing, and the opposite end is connected to the signal transmission line.

9. The electronic device according to claim 8, characterized in that, The housing includes a first housing and a second housing, one end of the first switch is connected to the first housing, and one end of the second switch and the third switch are respectively connected to the second housing, and there is a gap between the first housing and the second housing.

10. The electronic device according to claim 9, wherein The width of the gap is greater than or equal to 0.5 mm and less than or equal to 2 mm; the distance between the signal transmission line and the housing is greater than or equal to 5.6 mm.

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