mobile devices

Abstract

A mobile device includes a touch screen and a bezel antenna. The touch screen has a first sensing module, and the bezel antenna is disposed around the periphery of the touch screen. The bezel antenna also has a second sensing module. The first sensing module and the second sensing module form a mutual capacitance sensing loop to sense whether an object is approaching or touching the touch screen and the bezel antenna.

Description

TECHNICAL FIELD

[0001] The present application relates to a mobile device, and in particular, to a mobile device with a specific adsorption rate (SAR) sensing function. BACKGROUND

[0002] Generally, in order to avoid the electromagnetic waves generated by a mobile device such as a mobile phone or a tablet computer from affecting human health, the mobile device needs to have a SAR sensing function to sense the interval distance or relative position between the user and the mobile device and adjust the output power or output direction of the radio frequency signal according to the interval distance or relative position.

[0003] However, since the SAR sensing function needs to be implemented by adding an antenna unit or a conductor, it needs to occupy part of the internal space of the mobile device, and the SAR sensing function may interfere with the radio frequency signal used for communication, so it must also maintain a suitable distance from the antenna used for communication. The prior art uses an additional antenna to implement the SAR sensing function, which is not conducive to the miniaturization of the mobile device. Therefore, how to provide a mobile device that can implement the SAR sensing function through the components already possessed by the mobile device has become an urgent problem to be solved in the industry. SUMMARY

[0004] In view of the various shortcomings of the prior art, the main purpose of the present application is to provide a mobile device that can implement the SAR sensing function through the components already possessed by the mobile device.

[0005] In order to achieve the above-mentioned purpose and other purposes, the mobile device of the present application comprises a touch screen and a frame antenna. The touch screen has a first sensing module, and the frame antenna is arranged around the periphery of the touch screen and also has a second sensing module. The first sensing module and the second sensing module form a mutual capacitance sensing loop to sense whether an object is close to or in contact with the touch screen and the frame antenna.

[0006] In an embodiment, the frame antenna also has a feeding module for receiving or transmitting radio frequency signals through the frame antenna.

[0007] In an embodiment, the feeding module further comprises a matching circuit and a capacitor connected in series.

[0008] In an embodiment, the frame antenna also has six antenna units, and the six antenna units are not connected or are isolated by a ground capacitor and a ground terminal.

[0009] In an embodiment, the mobile device further comprises a housing, and the frame antenna is arranged in the housing.

[0010] In an embodiment, the first sensing module is composed of a plurality of array sensing units.

[0011] In an embodiment, the first sensing module and the second sensing module are also used to sense the user's hand holding manner or sliding gesture.

[0012] In an embodiment, the bezel antenna further comprises an inductance and a self-capacitance sensing module connected thereto.

[0013] The mobile device of the present application comprises a touch screen and a bezel antenna, and forms a mutual-capacitance sensing loop with the first sensing module of the touch screen and the second sensing module of the bezel antenna, thereby realizing the SAR sensing function. Compared with the prior art, a general mobile device needs to have a touch screen and a communication antenna for transmitting and receiving radio frequency signals, but in the technical solution of the present application, the communication antenna is replaced by the bezel antenna, and the SAR sensing function is realized through the touch screen and the bezel antenna, so that the mobile device of the present application does not need to additionally attach other antenna components or conductors, which is beneficial to miniaturization and cost saving. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the architecture of the mobile device of the first embodiment of the present application.

[0015] Figure 2 It is a schematic diagram of the architecture of the bezel antenna of the second embodiment of the present application.

[0016] Figure 3 It is a schematic diagram of the architecture of the bezel antenna of the third embodiment of the present application.

[0017] Figure 4 It is a schematic diagram of part of the architecture of the mobile device of the fourth embodiment of the present application.

[0018] SYMBOL EXPLANATION

[0019] 10 touch screen

[0020] 100 first sensing module

[0021] 100_1-100_n array sensing unit

[0022] 11 bezel antenna

[0023] 11a-11f antenna unit

[0024] 110 second sensing module

[0025] 111 feed-in module

[0026] 111a-111f feed-in module

[0027] 112 self-capacitance sensing module

[0028] L Inductance Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments.

[0030] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a mobile device according to a first embodiment of the present invention. The mobile device of the present invention includes a touch screen 10 and a bezel antenna 11. The touch screen 10 has a first sensing module 100, and the bezel antenna 11 is disposed around the periphery of the touch screen 10. The bezel antenna 11 also has a second sensing module (not shown). The first sensing module 100 and the second sensing module form a mutual capacitance sensing loop to jointly sense whether an object (e.g., a human body) is approaching or contacting the touch screen 10 and the bezel antenna 11.

[0031] The touch screen 10 may have touch input and display functions. Specifically, the touch input of the touch screen 10 may use capacitive sensing, and some or all of the capacitive sensing components may be used as the first sensing module 100. The frame antenna 11 may be made of metal or other conductors and may have the function of receiving or transmitting radio frequency signals.

[0032] Furthermore, the first sensing module 100 and the second sensing module can be used to sense the distance or relative position between the human body and the mobile device. The mobile device can adjust the output power or output direction of the radio frequency signal according to the distance or relative position to comply with SAR detection regulations.

[0033] The first sensing module 100 and the second sensing module form a mutual capacitance sensing loop. In one embodiment, the first sensing module 100 may be an RX (receive) sensing unit and the second sensing module may be a TX (transmit) sensing unit; or the first sensing module 100 may be a TX sensing unit and the second sensing module may be an RX sensing unit.

[0034] Please see Figure 2 , Figure 2This is a schematic diagram of the frame antenna architecture according to a second embodiment of the present invention. In one embodiment, the frame antenna 11, in addition to having a second sensing module 110, also has a feed module 111. The feed module 111 is used to receive or transmit radio frequency signals through the frame antenna 11. The frame antenna 11 may have one or more second sensing modules 110 and feed modules 111, and the present invention does not limit this. For example, the feed module 111 may be configured according to the wireless communication requirements of the mobile device, and the second sensing module 110 may be configured according to the requirements for sensing the human body.

[0035] In one embodiment, the feed module 111 may further include a matching circuit and a capacitor connected to it, which can be used for impedance matching or isolation of low-frequency signals.

[0036] Please see Figure 3 , Figure 3 This is a schematic diagram of the frame antenna architecture according to the third embodiment of the present invention. In one embodiment, the frame antenna 11 further has six antenna elements 11a, 11b, 11c, 11d, 11e, and 11f. The six antenna elements 11a, 11b, 11c, 11d, 11e, and 11f are not connected to each other or are isolated from each other by grounding capacitors and grounding terminals, and respectively correspond to the feed modules 111a, 111b, 111c, 111d, 111e, and 111f.

[0037] Specifically, the frame antenna 11 can be divided into multiple antenna elements 11a, 11b, 11c, 11d, 11e, and 11f, depending on the wireless communication requirements of the mobile device or the need to sense the human body. For example, antenna element 11a is located at the upper left position of the mobile unit. If a feed module 111a is connected to antenna element 11a, the feed module 111a can receive or transmit radio frequency signals in the direction of the upper left of the mobile unit through antenna element 11a. Similarly, if a second sensing module 110 is connected to antenna element 11a, it can sense whether a human body is near or in contact with the upper left position of the mobile unit.

[0038] In one embodiment, the mobile device may further include a housing, and the frame antenna 11 is disposed on the housing. In other embodiments, the frame antenna 11 may serve as the housing.

[0039] Please see Figure 4 , Figure 4 This is a partial architectural diagram of a mobile device according to a fourth embodiment of the present invention. In one embodiment, the first sensing module 100 is composed of a plurality of array sensing units 100_1 to 100_n.

[0040] In an embodiment, the first sensing module 100 and the second sensing module 110 are also used to sense the hand holding manner or the sliding gesture of the user. Further, since the first sensing module 100 is composed of the plurality of array sensing units 100_1 to 100_n, the plurality of array sensing units 100_1 to 100_n respectively form a plurality of sensing loops with the second sensing module 110, and whether the user's hand is close to or contacts the sensing loops can be sensed, so that the hand holding manner or the sliding gesture of the user can be determined, and the mobile device can also execute corresponding instructions or applications according to the hand holding manner or the sliding gesture of the user.

[0041] In an embodiment, the frame antenna 11 can also include the inductance L connected with the self-capacitance sensing module 112. The self-capacitance sensing module 112 is mainly used to sense the proximity of the human body and the object, and the mutual-capacitance sensing loops formed by the plurality of array sensing units 100_1 to 100_n and the second sensing module 110 can not only sense the human body and the object, but also determine the position of the changed capacitance, so that the type of the object can be determined through the self / mutual-capacitance change characteristics, such as whether it is a human body, moisture, metal, plastic or air, etc.

[0042] In summary, the mobile device of the present application includes the touch screen and the frame antenna, and the mutual-capacitance sensing loop is formed by the first sensing module of the touch screen and the second sensing module of the frame antenna, so that the SAR sensing function is realized. Compared with the prior art, the general mobile device needs to have the touch screen and the communication antenna for transmitting and receiving the radio frequency signal, but in the technical solution of the present application, the communication antenna is replaced by the frame antenna, and the SAR sensing function is realized through the touch screen and the frame antenna, so that the mobile device of the present application does not need to additionally attach other antenna components or conductors, which is beneficial to miniaturization and cost saving.

[0043] Through the above description of the preferred embodiments, those skilled in the art can more clearly understand the features and spirits of the present application, but the above embodiments are only used to illustrate the principles and effects of the present application, and are not used to limit the present application. Therefore, any modification and change to the above embodiments still does not deviate from the spirit of the present application, and the scope of the present application should be as listed in the claims.

Claims

1. A mobile device, characterized by The mobile device comprises: a touch screen having a first sensing module, the touch screen realizing touch input through capacitive sensing, some or all of the capacitive sensing components in the touch screen being used as the first sensing module; and a bezel antenna arranged around the periphery of the touch screen, the bezel antenna also having a second sensing module; wherein the first sensing module and the second sensing module form a mutual capacitive sensing loop to sense whether an object is close to or in contact with the touch screen and the bezel antenna, the first sensing module being one of a receiving sensing unit or a transmitting sensing unit, and the second sensing module being the other of a receiving sensing unit or a transmitting sensing unit.

2. The mobile device of claim 1, wherein, The bezel antenna also has a feed module for receiving or transmitting radio frequency signals through the bezel antenna.

3. The mobile device of claim 2, wherein, The feed module further comprises a matching circuit and a capacitor connected in series.

4. The mobile device of claim 2, wherein, The bezel antenna also has six antenna units, the six antenna units being not connected or being isolated by a ground capacitor and a ground terminal.

5. The mobile device of claim 4, wherein, The six antenna units are used to realize sensing of different positions of the mobile device.

6. The mobile device of claim 4, wherein, Each of the antenna units has a corresponding feed module.

7. The mobile device of claim 2, wherein, Each of the feed modules has a corresponding second sensing module.

8. The mobile device of claim 1, wherein, The mobile device further comprises a housing, and the bezel antenna is arranged on the housing.

9. The mobile device of claim 1, wherein, The first sensing module is composed of a plurality of array sensing units.

10. The mobile device of claim 9, wherein, The first sensing module and the second sensing module are also used to sense the way a user holds the mobile device or a sliding gesture.

11. The mobile device of claim 1, wherein, The bezel antenna further comprises an inductance and a self-capacitive sensing module connected in series.

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