CN103529974B - Multifunctional radio frequency device, computer system and operation method of multifunctional radio frequency device - Google Patents

Abstract

The present invention discloses a multifunctional radio frequency device for integration into a computer system, comprising a substrate, comprising a first surface and a second surface opposite to each other; a touch area, arranged on the first surface of the substrate, for generating a touch signal according to a touch condition of a user touching the touch area; an antenna, arranged on the first surface side of the substrate and/or the second surface side of the substrate, for transmitting and receiving a radio frequency signal; and a control module, arranged on the second surface of the substrate, coupled to the touch area and the antenna, for generating a control touch signal and an identification signal to the computer system according to the touch signal and the radio frequency signal, respectively.

Description

Multifunctional radio frequency device, computer system and operation method of multifunctional radio frequency device

technical field

The present invention refers to a multifunctional radio frequency device, a computer system, and a related multifunctional radio frequency device operating method that integrate touch functions and wireless transmission functions into a single module.

Background technique

With the advancement of technology, portable electronic devices such as notebook computers, personal digital assistants, and smart phones are generally equipped with wireless communication functions. However, with the advancement of notebook computer and tablet computer technology, the requirements for product appearance are gradually increasing, especially the metal casing has a greater impact on wireless signal transmission, which makes the wireless communication quality of the computer system poor. Therefore, how to match the exterior design of the computer system and select a proper location to integrate the antenna or radio frequency device in it without affecting the wireless signal transmission has become one of the goals of the industry.

Contents of the invention

Therefore, the main purpose of the present invention is to provide a multifunctional radio frequency device, a computer system and a related method for operating the multifunctional radio frequency device.

The present invention discloses a multi-functional radio frequency device for integration into a computer system, comprising a substrate including a first surface and a second surface opposite to each other; a touch area disposed on the first surface of the substrate , used to generate a touch signal according to a user touching the touch area; an antenna is arranged on the first surface side of the substrate and/or the second surface side of the substrate for use in to send and receive a radio frequency signal; and a control module, disposed on the second surface of the substrate, coupled to the touch area and the antenna, and used to generate a control touch according to the touch signal and the radio frequency signal signal and an identification signal to the computer system.

The present invention also discloses a computer system, which includes a multifunctional radio frequency device, which includes a substrate, including a first surface and a second surface opposite to each other; a touch area, disposed on the first surface of the substrate , used to generate a touch signal according to a user touching the touch area; an antenna is arranged on the first surface side of the substrate and/or the second surface side of the substrate for use in to send and receive a radio frequency signal; and a control module, disposed on the second surface of the substrate, coupled to the touch area and the antenna, and used to generate a control touch according to the touch signal and the radio frequency signal signal and an identification signal; and a central processing unit coupled to the multifunctional radio frequency device for processing the control touch signal and the identification signal.

The present invention also discloses a method for operating a multifunctional radio frequency device. The multifunctional radio frequency device is used to be integrated into a computer system, including a substrate, including a first surface and a second surface opposite to each other; On the first surface of the substrate, it is used to generate a touch signal according to the touch situation of a user touching the touch area; an antenna is arranged on the first surface side of the substrate and/or the substrate The second surface side of the substrate is used to send and receive a radio frequency signal; and a control module is arranged on the second surface of the substrate, coupled to the touch area and the antenna, and used to transmit and receive a radio frequency signal according to the touch signal and the radio frequency signal. The signal generates a control touch signal and an identification signal to the computer system respectively. The operation method of the multifunctional radio frequency device includes closing the touch control unit; and performing near-field communication through the antenna.

Description of drawings

FIG. 1 is a schematic diagram of a computer system according to an embodiment of the present invention.

FIG. 2A is a top view of a multifunctional radio frequency device according to an embodiment of the present invention.

FIG. 2B is a side view of the multifunctional radio frequency device of FIG. 2A .

2C and 2D are side views of different stacking methods of components in the multifunctional radio frequency device of FIG. 2A .

FIG. 3A is a top view of a multifunctional radio frequency device according to an embodiment of the present invention.

FIG. 3B is a side view of the multifunctional radio frequency device in FIG. 3A .

FIG. 3C is a top view of a multifunctional radio frequency device according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of an antenna according to an embodiment of the present invention.

FIG. 5A is a Smith chart of the antenna of FIG. 4 .

FIG. 5B is a measurement diagram of the radiation power of the antenna in FIG. 4 .

FIG. 6 is a schematic diagram of an antenna according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of an antenna according to an embodiment of the present invention.

FIG. 8A is a top view of a multifunctional radio frequency device according to an embodiment of the present invention.

FIG. 8B is a bottom view of the multifunctional radio frequency device of FIG. 8A.

FIG. 9A is a top view of a multifunctional radio frequency device according to an embodiment of the present invention.

FIG. 9B is a bottom view of the multifunctional radio frequency device of FIG. 9A.

FIG. 10 is a schematic diagram of an operation flow of a multifunctional radio frequency device according to an embodiment of the present invention.

[Description of main component labels]

1 computer system 20, 30, 80, 90 multifunctional radio frequency devices

10 touch device 13 central processing unit

14 shell 15 cover plate

21, 31, 81, 91 touch area 22, 32, 40, 60, 70 antenna

23 ferromagnetic material layer 24 control module

240 touch control unit 242 radio frequency control unit

25 Medium 26 Substrate

27 radio frequency identification tag TC_sig touch signal

RF_sig radio frequency signal TC_ctrl control touch signal

ID_sig identification signal TL, TL_15 first side

BL, BL_15 second side 41 feed-in terminal

42, 62, 72 radiator 43 ground terminal

421, 422, 423, 621, 622, 623, 621, 622, 623, 721, 722, 723, 724, 725, 821, 822, 823, 921, 922, 923, 924, 925 Radiation Department

L inductance 84, 94, 95 through holes

100 multifunctional radio frequency device operation process

101, 102, 103, 104 steps

detailed description

The currently developed Near Field Communication (Near Field Communication, NFC) is a short-distance high-frequency wireless communication technology, which is extended from the Radio Frequency Identity (RFID) technology. Near field communication also regulates the corresponding communication protocol, allowing electronic instruments to perform non-contact point-to-point data transmission and exchange data within a short distance.

Please refer to FIG. 1 for the method of integrating the NFC function into the computer system. FIG. 1 is a schematic diagram of a computer system 1 according to an embodiment of the present invention. Generally speaking, the computer system 1 usually utilizes a radio frequency device (not shown in FIG. An operation interface for manipulating the computer system 1 . For example, the user slides on the touch device 10 to manipulate the mouse pointer of the computer system 1 , or to input text by handwriting. The touch device 10 has a touch pad area covered with a cover 15 for protecting the touch pad area from being oxidized and damaged by external air or moisture. Therefore, if the casing 14 of the computer system 1 is made of a metal material, and the cover plate 15 is made of a non-metallic material, such as plastic, acrylic or glass, etc., the antenna of the radio frequency device can be placed on the touch Between the cover plate 15 of the control device 10 and the touch area, wireless signals are radiated through the non-metallic area of the cover plate 15 .

Please refer to FIG. 2A and FIG. 2B . FIG. 2A and FIG. 2B are respectively a top view and a side view of a multifunctional radio frequency device 20 according to an embodiment of the present invention. The multifunctional radio frequency device 20 combines a touch device and a radio frequency device, and can be integrated into the computer system 1 to perform touch functions and wireless transmission or wireless sensing functions. The multifunctional radio frequency device 20 includes a touch area 21 , an antenna 22 , a ferromagnetism layer 23 , a control module 24 , a cover 15 and a substrate 26 . The cover plate 15 includes an opposite first surface TL_15 and a second surface BL_15, and the substrate 26 includes an opposite first surface TL and a second surface BL, wherein the second surface BL_15 of the cover plate 15 and the base plate 26 The first surface TL is located between the first surface TL_15 of the cover plate 15 and the second surface BL of the substrate 26 . The touch area 21 is disposed on the first surface TL of the substrate 26, and is used for controlling a mouse pointer or handwriting according to a user's touch on the touch area 21, such as the user sliding on the touch area 21. Input text etc. to generate a touch signal TC_sig. The antenna 22 is disposed on the first surface side TL of the substrate 26, and is used for transmitting and receiving a radio frequency signal RF_sig for near-field communication, wherein the antenna 22 can be pasted on a second surface BL_15 of the cover plate 15 and the ferromagnetic material layer 23 or formed on the second surface BL_15 of the cover plate 15 by a laser direct structuring (Laser Direct Structuring) technique. The antenna pattern (Pattern) can surround the touch area 21 , and the hollow part in the middle of the antenna 22 is an air medium 25 . In addition, in other embodiments, the hollow part of the antenna 22 can also be a glass fiber substrate or a flexible printed circuit board (Flexible Printed Circuit, FPC) and other dielectric materials.

When another computer system within a wireless reading range of the multi-function radio frequency device 20 intends to perform near-field communication with the multi-function radio frequency device 20, the antenna 22 can be used to send and receive radio frequency signals RF_sig for data transmission with another computer system or exchange data. In addition, the antenna 22 can also be regarded as a radio frequency identification antenna, which is used to sense whether there is a radio frequency identification tag (RFIDtag) 27, so as to generate the radio frequency signal RF_sig. In other words, the multi-function radio frequency device 20 can also be regarded as a multi-function card reader, which is used to read the radio frequency identification tag 27, such as a credit card, financial card, leisure card or access control card with radio frequency identification function, etc., For activities such as financial transactions or identification. The ferromagnetic material layer 23 is adhered between the antenna 22 and the substrate 26. In this embodiment, the ferromagnetic material layer 23 is, for example, a ferrous layer (FerriteSheet), and is juxtaposed with the touch area 21 to prevent touch The area 21 or the noise generated by other electronic components in the computer system 1 prevents the radio frequency signal RF_sig transmitted and received by the antenna 22 from being interfered by the noise. In other words, the ferrous salt layer 23 can be used to reduce the electromagnetic interference (Electromagnetic Interference) between the antenna 22 and the touch area 21 or the computer system 1 , so as to improve the sensitivity of the multifunctional radio frequency device 20 to receive the radio frequency signal RF_sig. The control module 24 is disposed on the second surface BL of the substrate 26 and is electrically connected to the antenna 22 and the touch area 21 . The control module 24 includes a touch control unit 240 and a radio frequency control unit 242 . The touch control unit 240 is used for processing the touch signal TC_sig to generate a control touch signal TC_ctrl to the computer system 1 . The radio frequency control unit 242 is used for processing the radio frequency signal RF_sig to generate an identification signal ID_sig to the computer system 1 . The multifunctional radio frequency device 20 is coupled to the CPU 13 of the computer system 1 , and the CPU 13 is used to process and control the touch signal TC_ctrl and the identification signal ID_sig. Under this structure, the multifunctional radio frequency device 20 integrates the touch function and the wireless sensing or wireless transmission function into a single module, which can simplify the production process of the computer system 1 and reduce the production cost.

Please note that in FIG. 2B, there are no restrictions on the arrangement or stacking of the components of the multifunctional radio frequency device 20, and the designer can use different manufacturing technologies according to actual needs, such as laser direct structuring (Laser Direct Structuring), screen printing ( Screen Printing) or glass substrate printing (Antenna On Glass, AOG) and other technologies to adjust or change the stacking relationship of each component. For example, please refer to FIG. 2C and FIG. 2D . FIG. 2C and FIG. 2D are side views of different stacked multifunctional radio frequency devices 20 . As shown in FIG. 2C, in order to simplify the production process of the multifunctional radio frequency device 20, the antenna 22 and the touch area 21 can be directly printed on the first surface TL of the substrate 26, and the ferromagnetic material layer 23 can be pasted on the substrate 26. The second side of BL. In this way, the production steps of pasting the antenna 22 can be omitted. Alternatively, the antenna 22 can also be formed on the second surface BL_15 of the cover 15 by laser direct forming technology, so as to ensure that the antenna 22 is well fixed on the cover 15 and increase the product reliability of the multifunctional radio frequency device 20 . In other embodiments, the antenna 22 can also be formed on the first surface TL_15 (not shown in the figure) of the cover plate 15 by techniques such as laser direct forming, and then a covering layer is formed on the antenna 22 by methods such as painting. In FIG. 2D , the antenna 22 is disposed on the second surface BL of the substrate 26 , and the ferromagnetic material layer 23 is pasted on the area covered by the antenna 22 .

In short, the multifunctional radio frequency device 20 integrates the touch function and the wireless sensing or wireless transmission function into a single module, which can simplify the production process of the computer system 1 and reduce the production cost. In addition, in order to improve the wireless communication quality of the multifunctional radio frequency device 20, the present invention uses the ferromagnetic material layer 23 to block the noise generated by the touch area 21 or other electronic components in the computer system 1, and reduce the radio frequency transmitted and received by the antenna 22. The extent to which the signal RF_sig is interfered by noise is used to improve the receiving sensitivity of the antenna 22 .

It should be noted that the antenna 22 of the multifunctional radio frequency device 20 surrounds the periphery of the touch area 21 , that is, the antenna 22 does not overlap with the touch area 21 . On the other hand, the present invention also provides another way to configure the antenna, that is, a way to configure the antenna and the touch area to overlap each other, so as to increase the design flexibility of the multifunctional radio frequency device. Please refer to FIG. 3A to FIG. 3C . FIG. 3A , FIG. 3C and FIG. 3B are respectively a top view and a side view of another multifunctional radio frequency device 30 according to an embodiment of the present invention. The multifunctional radio frequency device 30 includes a touch area 31 , an antenna 32 , a ferromagnetic material layer 23 , a control module 24 , a cover 15 and a substrate 26 . As shown in FIG. 3A, the antenna 32 is arranged inside the area of the touch area 31 and overlaps with the touch area 31. However, it is not limited to this. The designer can design the size of the antenna 32 according to actual needs, so that the antenna 32 completely overlaps or partially overlaps with the touch area 31. As shown in FIG. 3B , the touch area 31 is formed on one side TL of the substrate 26 for generating a touch signal TC_sig according to a user's touch on the touch area 31 . The antenna 32 is used to sense whether there is a radio frequency identification tag 27, so as to generate a radio frequency signal RF_sig. The ferromagnetic material layer 23 is disposed between the antenna 32 and the touch area 31 to block noise generated by the touch area 31 or other electronic components in the computer system 1 , so as to prevent the radio frequency signal RF_sig transmitted and received by the antenna 32 from being interfered by noise. In this embodiment, the ferromagnetic material layer 23 is, for example, a ferrous salt layer. The control module 24 is disposed on the other surface BL of the substrate 26 , and includes a touch control unit 240 and a radio frequency control unit 242 . The touch control unit 240 is used for processing the touch signal TC_sig to generate a control touch signal TC_ctrl to the computer system 1 . The radio frequency control unit 242 is used for processing the radio frequency signal RF_sig to generate an identification signal ID_sig to the computer system 1 .

In addition, compared to the case where the antenna 32 surrounds the touch area 31 and is disposed on the first surface TL side of the substrate 26 in FIG. 3A , the antenna 32 in FIG. 3C is disposed on any area of the second surface BL of the substrate 26, And this area overlaps with the area where the touch area 31 is projected on the second surface BL of the substrate 26 .

In this way, the designer can design the disposition of the antennas 22, 32 in the multifunctional radio frequency devices 20, 30 according to the actual needs, to adjust the size of the antennas 22, 32 or the touch areas 21, 31, so that the antennas and the touch areas Overlapping, non-overlapping or partly overlapping, so it can have multiple design flexibility.

Regarding the design of the antenna, please refer to FIG. 4 , which is a schematic diagram of an antenna 40 according to Embodiment 1 of the present invention. The antenna 40 includes a feeding end 41 , a radiator 42 and a grounding end 43 . The feeding end 41 is used for feeding the radio frequency signal RF_sig. The radiator 42 is electrically connected to the feeding end 41 for radiating the radio frequency signal RF_sig. The ground terminal 43 is electrically connected to the radiator 42 for providing grounding. As shown in Figure 4, the antenna 40 is a loop (Loop) antenna, wherein the radiator 42 of the antenna 40 can be subdivided into radiation parts 421, 422 and 423, the radiation part 421 is electrically connected to the feeding end 41, and the radiation part 422 The radiation part 421 is electrically connected to the radiation part 423 , and the radiation part 423 is electrically connected between the radiation part 422 and the ground terminal 43 . The radiation part 422 also includes an inductor L, which can increase the inductance of the radiation part 422 or adjust the matching impedance of the radiator 42 to adjust the signal matching, radiation frequency or length of the antenna 40 . In addition, the position and quantity of the inductor L are not limited thereto, and can be adjusted and arranged in the radiator 42 according to requirements. At the same time, the lengths of the radiating parts 421 , 422 and 423 can also be properly adjusted to change the electrical length of the radiator 42 , thereby adjusting the radiation frequency of the antenna 40 . In addition, the position of the feeding end 41 is not limited to the position shown in FIG. 4 , and the antenna designer can adjust the position of the feeding end 41 according to actual needs. The way of feeding the radio frequency signal RF_sig into the feed end 41 is not limited, for example, the radio frequency signal RF_sig is transmitted by the radio frequency control unit 242 through a coaxial cable (Coaxialcable) or connecting elements such as a thimble (Pogopin) and a shrapnel (Spring). to the feed end 41. Alternatively, a trace can also be printed on the substrate 26 to directly electrically connect the feeding end 41 to the radio frequency control unit 242 .

Please refer to FIG. 5A and FIG. 5B . FIG. 5A and FIG. 5B are a Smith chart and a radiation power measurement diagram of the antenna 40 , respectively. As shown in FIG. 5A , the center frequency of the antenna 40 in the NFC application frequency band is 13.56 MHz, which falls close to the center of the Smith chart, which means that the antenna 40 has a good match at the frequency of 13.56 MHz. As shown in FIG. 5B , when the input power is 30 dBm, the output power of the antenna 40 is the highest at a frequency of 13.56 MHz, which is 7.42 dBm. Therefore, the antenna 40 conforms to the operating frequency band of the NFC, and can be used for the NFC function.

Further, the pattern of the antenna 40 is not limited, and the antenna designer can modify it appropriately, as long as the antenna 40 can meet the operating frequency band of the actual application. For example, please refer to FIG. 6 , which is a schematic diagram of another antenna 60 according to an embodiment of the present invention. Please note that the radiator 62 of the antenna 60 is different from the radiator 42 of the antenna 40 . The radiating portions 421 , 422 and 423 of the radiating body 42 are all straight, while the radiating portion 622 of the radiating body 62 has a meandering shape. Compared with the straight radiation portions 421 , 422 and 423 , the meander radiation portion 622 has a larger inductance value. That is to say, bending the pattern of the radiating part can be equivalent to connecting the radiating part 422 with the inductance L in series, so the antenna 60 can also achieve the effect of the antenna 40, and the cost of setting the inductance L can also be saved.

Please refer to FIG. 7 , which is a schematic diagram of another antenna 70 according to an embodiment of the present invention. Note that the radiator 72 of the antenna 70 is different from the radiators 42 , 52 of the antennas 40 , 50 . The radiation parts 724 and 725 of the radiation body 72 have a meander shape, and the radiation parts 721 , 722 and 723 are straight. Similarly, the result of the pattern winding of the radiating part 724 can be equivalent to connecting the inductance L in series between the radiating parts 721 and 722, and the result of the pattern bending of the radiating part 725 can be equivalent to connecting the inductance L in series with the radiating part 722 , 723 , and the position of the bend can also be adjusted appropriately, so the degree of variation in designing the antenna 70 can be increased.

In addition, in order to simplify the production process of the multifunctional radio frequency device, the antenna, the touch area and the control module 24 can be formed in a single substrate 26 . Please refer to FIG. 8A and FIG. 8B . FIG. 8A and FIG. 8B are respectively a top view and a bottom view of a multifunctional radio frequency device 80 according to an embodiment of the present invention. As shown in FIG. 8A , the touch area 81 and the radiation portions 821 and 823 are formed on the first surface TL of the substrate 26 . In FIG. 8B , the radiation portion 822 is formed on the second surface BL of the substrate 26 , wherein a via 84 can be used to electrically connect the radiation portion 822 to the radiation portions 821 and 823 . The control module 24 can be disposed on the second surface BL of the substrate 26 through a surface mount technology (Surface Mount Technology, SMT) and other technologies. On the other hand, the ferromagnetic material layer 23 (not shown in the figure) can be pasted on the covered area of the radiator 822, and can also reduce the electromagnetic interference between the radiator 822 and other electronic components, and the method is similar to that shown in FIG. 2D. In this way, the integrated multifunctional radio frequency device 80 can simplify its production process and reduce its manufacturing cost.

Please refer to FIG. 9A and FIG. 9B . FIG. 9A and FIG. 9B are respectively a top view and a bottom view of a multifunctional radio frequency device 90 according to an embodiment of the present invention. The multifunctional radio frequency device 90 also has a one-piece design. As shown in FIG. 9A , the touch area 91 and the straight radiation portions 921 , 922 , 923 are formed on the first surface TL of the substrate 26 . In FIG. 9B , the meandering radiation portions 924 and 925 are formed on the second surface BL of the substrate 26, wherein the through hole 94 can be used to electrically connect the meandering radiation portion 924 and the straight radiation portions 921 and 922. For connection, the through hole 95 can be used to electrically connect the meandering radiation portion 925 and the straight radiation portions 922 , 923 . On the other hand, the ferromagnetic material layer 23 (not shown in the figure) can be attached to the coverage areas of the meandering radiation parts 924 and 925 , and can also reduce the electromagnetic interference between the radiators 924 and 925 and other electronic components. In this way, the integrally formed multifunctional radio frequency device 90 also achieves the effects of simplifying the production process and reducing the manufacturing cost.

The operation modes of the multifunctional radio frequency devices 20, 30, 80, and 90 can be summarized as a multifunctional radio frequency device operation process 100, as shown in FIG. 10, which includes the following steps:

Step 101: start.

Step 102 : Turn off the touch control unit 240 .

Step 103: Perform near-field communication through the antenna 22 .

Step 104: end.

For details of the operation process 100 , reference may be made to the relevant descriptions of the multi-function radio frequency devices 20 and 30 , which will not be repeated here.

To sum up, due to the gradually increasing requirements on the appearance of electronic products, especially the metal casings have an impact on wireless signal transmission, resulting in poor wireless communication quality of the computer system. In order to solve this problem, the multifunctional radio frequency device proposed by the present invention is combined with the touch device in the computer system, and radiates wireless signals through the non-metallic area of the cover plate of the touch device, and blocks the computer system through the ferromagnetic material layer. Noise generated by other electronic components in the antenna to improve the receiving sensitivity of the antenna. Therefore, without affecting the appearance design of the computer system, the multifunctional radio frequency device of the present invention has better integration, which can simplify the manufacturing process of the computer system and reduce the production cost. In addition, the present invention also provides a variety of antenna design methods to expand the design changes of the multifunctional radio frequency device.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (27)

1. A multifunctional radio frequency device, used for integration into a computer system, comprising: A substrate, including a first surface and a second surface opposite to each other; a touch area, disposed on the first surface of the substrate, for generating a touch signal according to a user's touch on the touch area; An antenna, disposed on the first surface side of the substrate and/or the second surface side of the substrate, is used to send and receive a radio frequency signal; and A control module, arranged on the second surface of the substrate, coupled to the touch area and the antenna, is used to generate a control touch signal and an identification signal to the touch signal and the radio frequency signal respectively to the computer system, The antenna includes: a feed-in terminal, used to feed in a radio frequency signal; a radiator, electrically connected to the feeding end, for radiating the radio frequency signal; and A ground terminal is electrically connected to the radiator for providing grounding. 2. The multifunctional radio frequency device according to claim 1, further comprising a cover plate, the cover plate includes a first surface and a second surface opposite to each other, wherein the second surface of the cover plate and the The first surface of the substrate is located between the first surface of the cover plate and the second surface of the substrate. 3. The multifunctional radio frequency device according to claim 2, wherein the antenna is disposed on the first surface of the cover and/or the second surface of the cover. 4. The multifunctional radio frequency device according to claim 1, further comprising a ferromagnetic material layer disposed on the first side of the substrate and covering the area covered by the antenna, wherein the ferromagnetic material layer is located between the antenna and Between the first surface of the substrate, or between the antenna and the touch area. 5. The multifunctional radio frequency device according to claim 1, further comprising a ferromagnetic material layer disposed on the second surface side of the substrate and covering the area covered by the antenna, wherein the substrate is located between the antenna and the ferromagnetic material layers, or the antenna is located between the second surface of the substrate and the ferromagnetic material layer. 6. The multifunctional radio frequency device according to claim 2 , wherein the antenna is arranged on the first surface of the cover plate, the cover plate by pasting, a laser direct molding, a glass substrate printing or a screen printing technique The second side of the plate, the first side of the substrate, or the second side of the substrate. 7. The multifunctional radio frequency device according to claim 1, wherein the radiator further comprises at least one inductor. 8. The multifunctional radio frequency device according to claim 1, wherein the radiator comprises a plurality of radiation parts, at least one of which is straight or meandering. 9. The multifunctional radio frequency device according to claim 1, wherein the radiator comprises a plurality of radiation parts, wherein at least one first radiation part is disposed on the first surface of the substrate, and one second radiation part is disposed on the first surface of the substrate. On the second surface of the substrate, the radiator further includes at least one through hole for electrically connecting the first radiation portion and the second radiation portion. 10. The multifunctional radio frequency device according to claim 1, wherein the control module comprises: a touch control unit for processing the touch signal to generate the control touch signal to the computer system; and A radio frequency control unit is used for processing the radio frequency signal to generate the identification signal to the computer system. 11. The multifunctional radio frequency device as claimed in claim 1, wherein the antenna is a radio frequency identification antenna for sensing whether there is a radio frequency identification tag, thereby generating the radio frequency signal. 12. The multifunctional radio frequency device according to claim 1, wherein the antenna surrounds the touch area, and the antenna and the touch area overlap, do not overlap or partially overlap. 13 . The multifunctional radio frequency device according to claim 1 , wherein the antenna is disposed on the second surface of the substrate and overlaps with a projected area of the touch area on the second surface of the substrate. 14 . 14. A computer system comprising: A multifunctional radio frequency device includes: A substrate, including a first surface and a second surface opposite to each other; a touch area, formed on the first surface of the substrate, for generating a touch signal according to a user's touch on the touch area; An antenna, disposed on the first surface side of the substrate and/or the second surface side of the substrate, is used to send and receive a radio frequency signal; and a control module, disposed on the second surface of the substrate, coupled to the touch area and the antenna, and used to generate a control touch signal and an identification signal respectively according to the touch signal and the radio frequency signal; and a central processing unit, coupled to the multifunctional radio frequency device, for processing the control touch signal and the identification signal, The antenna includes: a feed-in terminal, used to feed in a radio frequency signal; a radiator, electrically connected to the feeding end, for radiating the radio frequency signal; and A ground terminal is electrically connected to the radiator for providing grounding. 15. The computer system according to claim 14, wherein the multifunctional radio frequency device further comprises a cover plate, the cover plate includes a first surface and a second surface opposite to each other, wherein the second surface of the cover plate The surface and the first surface of the substrate are located between the first surface of the cover plate and the second surface of the substrate. 16. The computer system according to claim 15, wherein the antenna is disposed on the first surface of the cover and/or the second surface of the cover. 17. The computer system according to claim 14, wherein the multifunctional radio frequency device further comprises a ferromagnetic material layer disposed on the first side of the substrate and covering the area covered by the antenna, wherein the ferromagnetic material layer It is located between the antenna and the first surface of the substrate, or between the antenna and the touch area. 18. The computer system according to claim 14, wherein the multifunctional radio frequency device further comprises a ferromagnetic material layer disposed on the second side of the substrate and covering the area covered by the antenna, wherein the substrate is located on the antenna and the ferromagnetic material layer, or the antenna is located between the second surface of the substrate and the ferromagnetic material layer. 19. The computer system according to claim 15 , wherein the antenna is disposed on the first surface of the cover plate, the cover plate by bonding, a laser direct forming, a glass substrate printing or a screen printing technique The second surface, the first surface of the substrate or the second surface of the substrate. 20. The computer system according to claim 14, wherein the radiator further comprises at least one inductor. 21. The computer system according to claim 14, wherein the radiator comprises a plurality of radiators, at least one of which is straight or meandering. 22. The computer system according to claim 14, wherein the radiating body comprises a plurality of radiating parts, at least including a first radiating part disposed on the first surface of the substrate, and a second radiating part disposed on the substrate The radiator further includes at least one through hole for electrically connecting the first radiation part and the second radiation part. 23. The computer system according to claim 14, wherein the control module comprises: a touch control unit for processing the touch signal to generate the control touch signal to the computer system; and A radio frequency control unit is used for processing the radio frequency signal to generate the identification signal to the computer system. 24. The computer system as claimed in claim 14, wherein the antenna is a radio frequency identification antenna for sensing whether there is a radio frequency identification tag, so as to generate the radio frequency signal. 25. The computer system according to claim 14, wherein the antenna surrounds the touch area, and the antenna and the touch area overlap, do not overlap or partially overlap. 26 . The computer system according to claim 14 , wherein the antenna is disposed on the second surface of the substrate and overlaps with an area where the touch area is projected on the second surface of the substrate. 27. A method for operating a multifunctional radio frequency device, the multifunctional radio frequency device is used for integration into a computer system, the multifunctional radio frequency device includes a substrate, including a first surface and a second surface opposite to each other; a touch an area, arranged on the first surface of the substrate, and used to generate a touch signal according to a user touching the touch area; an antenna, arranged on the first surface side of the substrate and/or Or the second surface side of the substrate, used to send and receive a radio frequency signal; and a control module, arranged on the second surface of the substrate, coupled to the touch area and the antenna, and used to transmit and receive a radio frequency signal according to the touch signal And the radio frequency signal generates a control touch signal and an identification signal to the computer system respectively, and the operation method of the multifunctional radio frequency device includes: turn off the touch control unit; and near-field communication through this antenna, The antenna includes: a feed-in terminal, used to feed in a radio frequency signal; a radiator, electrically connected to the feeding end, for radiating the radio frequency signal; and A ground terminal is electrically connected to the radiator for providing grounding.