Terminal device

Abstract

The terminal equipment comprises a shell, a dustproof net and an antenna, an opening is formed in the shell, the dustproof net is arranged at the opening, and at least part of the antenna is located on the dustproof net. According to the terminal device, the dustproof net is arranged in the opening, the antenna is attached to the shell, and at least part of the antenna is located on the dustproof net, so that the placing space of the antenna is saved, the antenna is far away from the mainboard, the noise shielding cost of the antenna is reduced, the antenna can radiate and receive signals more efficiently, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of digital electronic products, and in particular to a terminal device. BACKGROUND

[0002] With the rapid development of wireless communication technology, on the one hand, terminal devices such as notebook computers need to use multiple antennas to achieve Wi-Fi, Bluetooth or GPS navigation functions, and the antennas occupy a large space, and the antennas need to be windowed for radiation performance in a metal machine environment, on the other hand, terminal devices tend to be thin and light design. Therefore, how to ensure the antenna performance in the terminal device while reducing the occupied area of the antenna has become a problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a terminal device.

[0004] The terminal device of the present application embodiment comprises a shell, a dust screen and an antenna. The shell is formed with an opening; the dust screen is arranged at the opening; and the antenna is at least partially located on the dust screen.

[0005] In some embodiments, the antenna comprises a ground metal sheet, a radiator and a feed connection line. The ground metal sheet is attached to the shell, the radiator is located on the dust screen and is arranged in a spaced manner with the ground metal sheet, and the radiator comprises a feed point and a ground end. The ground end is electrically connected to the ground metal sheet. The feed connection line connects the feed point.

[0006] In some embodiments, the radiator comprises a first radiation arm and a second radiation arm located on both sides of the feed point, and the ground end is located on a side of the second radiation arm away from the first radiation arm; the first radiation arm, the feed connection line and the ground metal sheet jointly form a first clearance area, and the second radiation arm, the feed connection line and the ground metal sheet jointly form a second clearance area.

[0007] In some embodiments, the radiator further comprises a ground branch, the ground end connects the ground metal sheet through the ground branch, and the second radiation arm, the ground branch and the ground metal sheet jointly form a third clearance area.

[0008] In some embodiments, a first area of the dust screen coinciding with the first clearance area, the second clearance area and the third clearance area in a first direction is made of a non-metal material.

[0009] In some embodiments, the spacing between the ground metal sheet and the radiator ranges from 4.5 to 9 millimeters.

[0010] In some embodiments, the opening is rectangular, the length of the opening is greater than 30 mm, and the width of the opening is greater than 2.5 mm.

[0011] In some embodiments, the length of the ground metal sheet is less than or equal to the length of the opening, and the width of the ground metal sheet is greater than or equal to 7 mm.

[0012] In some embodiments, the antenna is one of a inverted-F antenna, a flexible printed circuit board antenna, a slot antenna, a printed circuit board antenna, and a laser direct structuring antenna.

[0013] In some embodiments, the antenna is a laser direct structuring antenna, and the radiator is formed integrally with the dust screen by a laser direct structuring process.

[0014] In some embodiments, the antenna is a flexible printed circuit board antenna, and the radiator is attached to the dust screen.

[0015] In some embodiments, the dust screen further comprises a radiation slot, the radiation slot at least partially overlaps the antenna along a first direction, the length of the radiation slot is greater than 1 mm, and the width of the radiation slot is greater than the distance from the radiator to the ground metal sheet.

[0016] In the terminal device of the embodiments of the present application, the antenna is integrated on the dust screen of the terminal device, and the radiation antenna performance is achieved. The radiation efficiency of the antenna is optimized, the antenna noise shielding cost is saved, and the user experience is improved.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0019] Figure 1 FIG. 1 is a structural schematic diagram of a terminal device in an embodiment of the present application;

[0020] Figure 2 FIG. 2 is an exploded schematic diagram of the terminal device in the embodiment of the present application; Figure 1

[0021] Figure 3 FIG. 3 is a structural schematic diagram of an antenna in the embodiment of the present application;

[0022] Figure 4 FIG. 4 is a structural schematic diagram of the antenna adhering to a dust screen in the embodiment of the present application;

[0023] ​Figure 5 FIG. 1 is a diagram of a test result of the FPC antenna using a dustproof net of a non-metallic material in an embodiment of the present application;

[0024] Figure 6 FIG. 2 is a diagram of another test result of the FPC antenna using a dustproof net of a non-metallic material in an embodiment of the present application;

[0025] Figure 7 FIG. 3 is a diagram of a test result of the FPC antenna using a dustproof net of a metallic material in an embodiment of the present application;

[0026] Figure 8 FIG. 4 is a diagram of another test result of the FPC antenna using a dustproof net of a metallic material in an embodiment of the present application.

[0027] Main component reference numerals:

[0028] terminal device 100, housing 10, opening 11, dustproof net 20, antenna 30, ground metal sheet 31, radiator 32, feed point 321, ground terminal 322, first radiation arm 323, second radiation arm 324, ground branch 325, feed connection line 33, first clearance 40, second clearance 41, third clearance 43, first region 50, second region 51, radiation slot 60. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below with reference to the attached drawings, which are given as examples only and thus are non-limiting in nature. The embodiments described below are examples of implementations of the present application and are not intended to limit the scope of the present application, as defined by the appended claims and their equivalents.

[0030] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated thereby. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0031] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0033] Please refer to Figure 1 and Figure 2 , the present application discloses a terminal device 100, which comprises a shell 10, a dust screen 20 and an antenna 30. The shell 10 is formed with an opening 11; the dust screen 20 is arranged at the opening 11; the antenna 30 is attached to the shell 10 and at least partially located on the dust screen 20.

[0034] It should be noted that the terminal device 100 refers to a device that can directly interact with the user and is used for input, output or processing data. The terminal device 100 is located at the end of the network and is used to receive and send data so that the user can access network resources, execute application programs or process data. The terminal device 100 can be, but is not limited to, a notebook computer, a desktop computer, a tablet computer, a smart phone, etc. For example, the terminal device 100 is a notebook computer in the embodiments of the present application.

[0035] The terminal device 100 comprises a shell 10, a dust screen 20 and an antenna 30. The shell 10 is the external structure of the terminal device 100, which plays a role in wrapping and protecting the internal hardware of the terminal device 100. The shell 10 is formed with an opening 11, which can be a sound outlet or an air outlet, which is originally used to diffuse sound or accelerate heat dissipation. In particular, the antenna 30 can be installed near the opening 11, so that the opening 11 can be used to radiate the performance of the antenna 30.

[0036] The dustproof net 20 is a protective device of the terminal device 100. The dustproof net 20 can be made of fine mesh material to ensure that dust is blocked and a certain ventilation is maintained. The dustproof net 20 is arranged at the opening 11 and is used to block dust and sundries from entering the inside of the terminal device 100, thereby protecting the antenna 30 and internal hardware from damage.

[0037] The antenna 30 is an important component of the terminal device 100 for receiving and transmitting wireless signals. The antenna 30 enables the terminal device 100 to be connected to a wireless network (such as Wi-Fi), a Bluetooth device, etc., thereby realizing functions such as wireless Internet access and wireless data transmission.

[0038] The antenna 30 can be one of an inverted-F antenna (IFA), a flexible printed circuit board antenna (FPC), a slot antenna (SA), a printed circuit board antenna (PCBA), and a laser-direct-structuring (LDS) antenna. The IFA is obtained by deforming a traditional monopole antenna 30, arranging a radiator 32, a ground plane, and a feed point 321 in a specific manner to achieve miniaturization and good radiation performance. The IFA antenna radiates in a feed point and ground manner. The IFA antenna has a small structure size and high radiation efficiency. The SA radiates in a slot or opening manner. The SA is simple to manufacture and can adjust radiation characteristics by changing the shape and position of the slot. However, the radiation efficiency of the SA is low, and the bandwidth is narrow. The PCBA is an antenna directly printed on a circuit board and is the most common type in process manufacturing, having advantages such as low cost and good stability. However, a single antenna pattern cannot cover all aspects, has high insertion loss, relatively low efficiency, and is easily disturbed by a mainboard. The FPC antenna is an antenna made of a flexible printed circuit board. The FPC antenna has advantages such as good performance, low cost, good flexibility and plasticity, and easy integration. The LDS antenna forms a target trace by laser engraving and radiates the antenna 30 performance. It should be noted that laser engraving refers to directly forming a metal antenna 30 pattern on a plastic support by laser engraving technology during injection molding, thereby realizing direct one-piece molding of the antenna 30 and the shell.

[0039] It can be understood that the IFA antenna, the FPC antenna, the SA, the PCB antenna, and the LDS antenna each have their own advantages and applicable scenarios, and various factors need to be considered comprehensively for selection in actual applications.

[0040] In the related antenna 30 design, the installation position of the antenna 30 is close to the mainboard of the terminal device 100. The antenna 30 not only occupies the internal space of the terminal device 100, but also is easily interfered by the signals of the modules such as memory or processor on the mainboard, which reduces the receiving performance of the antenna 30. Therefore, additional noise shielding measures are needed to reduce the internal interference, such as using a metal shielding cover.

[0041] In the terminal device 100 of the embodiment, by setting the dustproof screen 20 at the opening 11 and attaching the antenna 30 to the shell 10 and at least partially on the dustproof screen 20, the placement space of the antenna 30 is saved, the antenna 30 is away from the mainboard, the noise shielding cost of the antenna 30 is reduced, the antenna 30 can more efficiently radiate and receive signals, and the user's use experience is improved.

[0042] Please refer to Figure 3 In some embodiments, the antenna 30 includes a grounding metal sheet 31, a radiator 32, and a feed connection line 33. The radiator 32 is located on the dustproof screen 20 and is spaced apart from the grounding metal sheet 31. The radiator 32 includes a feed point 321 and a grounding end 322. The grounding end 322 is electrically connected to the grounding metal sheet 31. The feed connection line 33 is connected to the feed point 321.

[0043] The grounding metal sheet 31 is located at the bottom or side of the device, and the material can be copper foil. The grounding metal sheet 31 provides a stable reference potential (usually ground potential) for the antenna 30, which helps to reduce interference between the antenna 30 and other electronic components.

[0044] The radiator 32 optimizes the radiation characteristics of the antenna 30, such as directivity, gain, and bandwidth, through its specific shape and size. The radiator 32 includes a feed point 321 and a grounding end 322. The feed point 321 is located at the connection position of the radiator 32 and the feed connection line 33. The function of the feed point 321 is to transmit the signals received by the antenna 30 to the receiving device through the feed connection line 33, or to transmit the signals emitted by the sending device to the antenna 30 for radiation.

[0045] The radiator 32 is located on the dustproof screen 20. Compared with installing the radiator 32 near the mainboard inside the terminal device 100, the internal materials and structures are reduced, which improves the radiation efficiency of the antenna 30. The position of the radiator 32 on the dustproof screen 20 also considers reducing internal interference while not hindering air circulation.

[0046] The feed connection line 33 is a wire connecting the feed point 321 and the transmitting device or receiving device. The feed connection line 33 connects the feed point 321, and can transmit the electrical signal generated by the transmitting device to the feed point 321, so as to drive the radiator 32 to radiate the signal. The feed connection line 33 can also transmit the signal received by the radiator 32 from the feed point 321 to the receiving device. The feed connection line 33 needs to have good electrical conductivity and low loss characteristics to ensure that the signal will not be greatly attenuated and disturbed during transmission. At the same time, its length and layout also need to be optimized according to the specific design of the antenna 30 to achieve the best signal transmission effect.

[0047] The radiator 32 is spaced apart from the ground metal sheet 31 to form a certain spatial gap, which helps to reduce the direct coupling of the electromagnetic field of the radiator 32 to the ground metal sheet 31, thereby reducing interference and improving the radiation efficiency of the antenna 30. The spacing allows the various parts of the antenna 30 to be adjusted and optimized independently to meet the performance requirements in different application scenarios. For example, the distance, shape and size between the radiator 32 and the ground metal sheet 31 can be adjusted as needed to achieve the best performance of the antenna 30.

[0048] The ground end 322 is electrically connected to the ground metal sheet 31 to form a complete circuit loop. This design allows the radiator 32 to effectively radiate or receive electromagnetic waves under the action of electric and magnetic fields.

[0049] Please refer to Figure 3 and Figure 4 In some embodiments, the radiator 32 includes a first radiation arm 323 and a second radiation arm 324 located on both sides of the feed point 321, and the ground end 322 is located on the side of the second radiation arm 324 away from the first radiation arm 323; the first radiation arm 323, the feed connection line 33 and the ground metal sheet 31 form a first clearance area 40, and the second radiation arm 324, the feed connection line 33 and the ground metal sheet 31 form a second clearance area 41.

[0050] The feed point 321 is the core point of signal input or output of the antenna 30, and is located at the center of the radiator 32 and connected to the feed connection line 33. The first radiation arm 323 is a metal arm extending from one side of the feed point 321, and its shape and length are carefully designed to optimize the radiation characteristics of the antenna 30.

[0051] The second radiation arm 324 is a metal arm extending from the other side of the feed point 321 opposite to the first radiation arm 323. The second radiation arm 324 is also connected to the ground end 322, which is located on the side of the second radiation arm 324 away from the first radiation arm 323.

[0052] The first clearance area 40 is a space region enclosed by the first radiating arm 323, the feed connection line 33 and the ground metal sheet 31. This region is relatively independent, reducing the direct influence of the external electromagnetic environment on the first radiating arm 323, and helping to maintain the stability and directivity of the antenna 30 radiation.

[0053] Similarly, the second clearance area 41 is another space region enclosed by the second radiating arm 324, the feed connection line 33 and the ground metal sheet 31. Since the ground end 322 is located on one side of the second radiating arm 324, the shape and size of the second clearance area 41 are also affected by the location of the ground end 322. However, its main purpose is still to reduce electromagnetic interference and improve the radiation efficiency of the antenna 30.

[0054] The design of the first clearance area 40 and the second clearance area 41 helps to isolate the influence of the external electromagnetic environment on the inside of the antenna 30, while reducing the mutual interference between the components inside the antenna 30.

[0055] In this way, by cleverly arranging the structure, reasonably designing the shape and length of the radiating arms, and forming clearance areas, the electromagnetic coupling and reflection inside the antenna 30 can be reduced, thereby improving the radiation efficiency of the antenna 30.

[0056] In addition, the arrangement of the radiating arms and the formation of the clearance areas can affect the radiation pattern of the antenna 30, making the antenna 30 have better radiation performance in a certain direction.

[0057] Referring to Figure 3 and Figure 4 In some embodiments, the radiator 32 further includes a ground branch 325, the ground end 322 connects the ground metal sheet 31 through the ground branch 325, and the second radiating arm 324, the ground branch 325 and the ground metal sheet 31 form a third clearance area 42.

[0058] The ground branch 325 is an additional conductive structure, and its main function is to connect the ground end 322 with the ground metal sheet 31 to form a complete ground path. The third clearance area 42 formed by the second radiating arm 324, the ground branch 325 and the ground metal sheet 31 further reduces the interference of the external electromagnetic environment on the inside of the antenna 30, especially the ground end 322, and helps to maintain the stability of the performance of the antenna 30.

[0059] Referring to Figure 4 In some embodiments, the first area 50 where the dust screen 20 coincides with the first clearance area 40, the second clearance area 41 and the third clearance area 42 along the first direction is made of a non-metallic material.

[0060] Specifically, the dust screen 20 can include a first region 50 and a second region 51, the first region 50 being adjacent to the second region 51, and the antenna 30 being disposed in the first region 50, which can be made of a non-metallic material.

[0061] The non-metallic material, such as plastic, rubber, etc., is generally not conductive and has less impact on the transmission and radiation of electromagnetic waves. In the design of the antenna 30, the use of the dust screen 20 made of a non-metallic material can reduce the interference with the radiation characteristics of the antenna 30 and ensure that the antenna 30 can work normally.

[0062] The first direction is a direction perpendicular to the plane on which the dust screen 20 is located, and the first region 50 of the dust screen 20 coinciding with the first clearance area 40, the second clearance area 41 and the third clearance area 42 is the most critical part of the radiation of the antenna 30. If this region is made of a metal material, unnecessary electromagnetic coupling and reflection will be introduced, thereby affecting the radiation efficiency and directivity of the antenna 30. Therefore, the influence can be avoided by selecting a non-metallic material to make the first region 50.

[0063] In this way, the use of a non-metallic material to make the dust screen 20 avoids introducing additional electromagnetic interference, thereby ensuring the stability and accuracy of the radiation of the antenna 30; the first region 50 made of a non-metallic material helps to improve the radiation efficiency of the antenna 30 by reducing electromagnetic coupling and reflection, so that the antenna 30 can more effectively transmit and receive signals.

[0064] In some embodiments, the spacing between the ground metal sheet 31 and the radiator 32 is in the range of 4.5-9 mm.

[0065] The spacing between the ground metal sheet 31 and the radiator 32 can be, for example, 5 mm, 6 mm, 7 mm, 8 mm or 9 mm. The size of the spacing will affect the distribution of the electromagnetic field around the radiator 32. Too small a spacing can cause strong coupling and reflection of the electromagnetic field between the ground metal sheet 31 and the radiator 32, thereby reducing the radiation efficiency. Too large a spacing can increase the size and weight of the antenna 30, and can also cause distortion of the radiation direction.

[0066] The impedance matching of the antenna 30 refers to the degree of matching between the input impedance of the antenna 30 and the feed line impedance. The size of the spacing will also affect the input impedance of the antenna 30, thereby affecting the effect of impedance matching. A proper spacing can enable the antenna 30 to have good impedance matching characteristics in a specific frequency band, thereby improving the transmission efficiency of the antenna 30.

[0067] Electromagnetic compatibility refers to the ability of a device to function properly in an electromagnetic environment and not cause unacceptable electromagnetic interference to other devices. The spacing between the grounding metal sheet 31 and the radiator 32 also has an important influence on the electromagnetic compatibility of the antenna 30. Proper spacing can reduce electromagnetic interference between the antenna 30 and other electronic devices, improving the overall performance of the system.

[0068] In some embodiments, the opening 11 is rectangular, the length of the opening 11 is greater than 30 mm, and the width of the opening 11 is greater than 2.5 mm.

[0069] For example, the length of the opening 11 can be 31 mm, 32 mm, 33 mm, 34 mm, or 35 mm, and the width of the opening 11 can be 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, or 3 mm. Larger opening 11 dimensions help increase air flow and improve heat dissipation efficiency. Too small an opening 11 can result in poor heat dissipation and high temperatures, causing abnormal operation of internal hardware of the terminal device 100.

[0070] In some embodiments, the length of the grounding metal sheet 31 is less than or equal to the length of the opening 11, and the width of the grounding metal sheet 31 is greater than or equal to 7 mm.

[0071] The length of the grounding metal sheet 31 is less than or equal to the length of the opening 11, which ensures that the grounding metal sheet 31 can completely cover or at least match the opening 11 in the length direction. Such a design helps achieve good grounding effects, reduces electromagnetic interference, and ensures the stability of the terminal device 100 in terms of electrical performance.

[0072] The width of the grounding metal sheet 31 is greater than or equal to 7 mm, which provides better electrical connection and grounding effects, helps reduce grounding resistance, and improves the electrical performance of the system. A wider grounding metal sheet 31 is also more mechanically reliable and can better withstand external environmental influences such as vibration and impact.

[0073] In some embodiments, the antenna 30 is an LDS antenna, and the radiator 32 is formed integrally with the dust screen 20 through a laser direct structuring process.

[0074] Specifically, in some embodiments, the method of integrating the LDS antenna into the dust screen 20 is as follows: lay the crimped dust screen 20 flat, apply a layer of protective film, mark the position where the hole needs to be drilled with chemicals, use a machine to drill the marked position, remove the previous protective film, and apply a new layer of protective film. Use a machine to engrave the designated position of the antenna 30 on the dust screen 20 to reveal the desired metal-plated wire shape; then plate copper or tin or other metals in the wire area to form the antenna 30; and solder the feed connection line 33 at the feed point 321 to transmit signals.

[0075] The integration of the radiator 32 and the dust screen 20 reduces the number of components, simplifies the assembly process, and improves production efficiency. At the same time, it also reduces the overall size of the antenna 30 module, which helps to achieve the lightness and thinness of the device.

[0076] Since the radiator 32 and the dust screen 20 are manufactured as a whole, the connection between them is more firm and reliable, reducing the risk of performance degradation or failure due to loosening or falling off, and increasing the durability of the antenna 30.

[0077] The dust screen 20 is made of plastic, which facilitates the use of the laser direct structuring process. The laser direct structuring process can accurately control the shape and size of the radiator 32, thereby optimizing the radiation efficiency and directivity of the antenna 30. At the same time, the dust screen 20 can also reduce the interference of the external environment on the performance of the antenna 30 to a certain extent.

[0078] In some embodiments, the antenna 30 is an FPC antenna, and the radiator 32 is attached to the dust screen 20.

[0079] Using an FPC antenna, compared to an LDS antenna, the radiator 32 and the protective screen are independent parts, and the antenna 30 is tightly connected to the dust screen 20 by attachment. The position is selected near the edge of the ground to facilitate ground and feed coupling. The dust screen 20 is provided with positioning holes to facilitate the attachment of the antenna 30.

[0080] Specifically, first, the dust screen 20 is manufactured according to the manufacturing process of the dust screen 20; second, the FPC antenna 30 is attached to the target position to form an integral.

[0081] In some embodiments, the performance of the antenna 30 in different environments can be simulated by changing the material of the second area 51 of the dust screen 20, and the performance of the antenna 30 in different frequency bands is tested. In some tests, the second area 51 uses a dust screen 20 made of non-metallic material, and in some tests, the second area 51 uses a dust screen 20 made of metallic material, and the first area 50 uses plastic material in both tests. The test results are shown in Figures 5-8 , the efficiency of the FPC antenna made of non-metallic material in the 2.4G and 5G frequency bands is within -1 dB, and the efficiency of the FPC antenna made of metallic material in the 2.4G and 5G frequency bands is within -1.5 dB, both of which can be applied to the sound outlet and air outlet positions.

[0082] Please refer to Figure 4 In some embodiments, the dust screen 20 further comprises a radiation gap 60, the radiation gap 60 at least partially coincides with the antenna 30 along the first direction, the length of the radiation gap is greater than 1 millimeter, and the width of the radiation gap is greater than the distance from the radiator 32 to the ground metal sheet 31.

[0083] The radiation slot 60 is at least partially coincident with the antenna 30 in the first direction. When the FPC antenna is tightly connected with the dust screen 20 by means of attachment, a special radiation slot 60 needs to be designed for the first area of the dust screen 20 to radiate the performance of the antenna 30.

[0084] The length of the radiation slot 60 is greater than 1 mm, for example, it can be 1.5 mm, 2 mm, 2.5 mm or 3 mm. This length requirement ensures that the slot can produce sufficient radiation effect, while also taking into account the accuracy requirements of manufacturing and installation.

[0085] The width of the radiation slot 60 is greater than the distance from the radiator 32 to the ground metal sheet 31. This design is to optimize the radiation efficiency of the slot, reduce the loss of signals between the radiator 32 and the ground metal sheet 31, and thus improve the overall performance of the antenna 30.

[0086] In the description of the present specification, the description referring to the terms "one embodiment", "certain embodiments", "exemplary embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples.

[0087] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A terminal device, characterized in that, include: A housing having an opening; A dustproof net is installed at the opening; The antenna is at least partially located on the dustproof mesh; The antenna includes: A grounding metal sheet is attached to the housing; A radiator is located at the dustproof net and spaced apart from the grounding metal sheet. The radiator includes a power supply point and a grounding terminal, and the grounding terminal is electrically connected to the grounding metal sheet. Feed connection line, connecting to the feed point; The radiator includes a first radiating arm and a second radiating arm located on both sides of the feed point, and the grounding terminal is located on the side of the second radiating arm away from the first radiating arm. The first radiating arm, the feed connection line, and the grounding metal plate together form a first clearance area, and the second radiating arm, the feed connection line, and the grounding metal plate together form a second clearance area.

2. The terminal device according to claim 1, characterized in that, The radiator also includes a grounding branch, and the grounding end is connected to the grounding metal plate through the grounding branch. The second radiating arm, the grounding branch, and the grounding metal plate together form a third clearance zone.

3. The terminal device according to claim 2, characterized in that, The first area of ​​the dustproof net that overlaps with the first clearance area, the second clearance area and the third clearance area along the first direction is made of non-metallic material.

4. The terminal device according to any one of claims 1-3, characterized in that, The distance between the grounding metal sheet and the radiator is 4.5-9 mm.

5. The terminal device according to any one of claims 1-3, characterized in that, The opening is rectangular, with a length greater than 30 mm and a width greater than 2.5 mm.

6. The terminal device according to claim 5, characterized in that, The length of the grounding metal sheet is less than or equal to the length of the opening, and the width of the grounding metal sheet is greater than or equal to 7 millimeters.

7. The terminal device according to claim 1, characterized in that, The antenna is one of the following: an inverted-F antenna, a flexible printed circuit board antenna, a slot antenna, a printed circuit board antenna, and a laser-formed antenna.

8. The terminal device according to claim 7, characterized in that, The antenna is a laser-formed antenna, and the radiator is integrated with the dustproof mesh through a laser-formed process.

9. The terminal device according to claim 7, characterized in that, The antenna is a flexible printed circuit board antenna, and the radiator is attached to the dustproof mesh.

10. The terminal device according to claim 9, characterized in that, The dustproof net also includes a radiating slit, which at least partially coincides with the antenna along a first direction. The length of the radiating slit is greater than 1 mm, and the width of the radiating slit is greater than the distance from the radiator to the grounding metal sheet.

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