Electronic devices using near field communication

Abstract

The present invention provides an electronic device using near field communication, which includes a coil element, a display module, an antenna element and a switch element. The display module includes a panel. The antenna element is used to transmit and receive near field communication signals. The coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap. The switch element is connected to the coil element. The switch element is used to switch the coil element to an open loop or a closed loop. The electronic device of the present invention can set the antenna element of near field communication under the panel, and through the design of the switch element, the coil element that provides electrostatic protection can switch the loop according to the need of near field signal reception and transmission, thereby avoiding the energy absorption of the coil element for near field signal transmission, and can also provide a better electrostatic protection effect when near field signal transmission is not needed.

Description

Technical Field

[0001] The present invention relates to an electronic device, and in particular to an electronic device using near field communication technology. Background Art

[0002] Conventional electronic devices using near field communication for sensing generally have a near field communication antenna disposed above a display panel. However, this design causes the display surface of the electronic device to protrude an antenna sensing area, which has aesthetic problems and limited display range. Therefore, how to propose an electronic device using near field communication in which a near field communication antenna is installed below a display panel is an important issue for the industry in this field. Summary of the invention

[0003] According to one embodiment of the present invention, an electronic device using near field communication is proposed, which includes: a coil element; a display module including a panel; an antenna element for transmitting and receiving near field communication signals, wherein the coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap; and a switch element connected to the coil element, the switch element being used to switch the coil element to an open loop or a closed loop.

[0004] Preferably, the coil element forms a ground plane, and the coil element and the antenna element at least partially overlap in a direction perpendicular to the ground plane.

[0005] Preferably, the coil element is disposed around the panel, and the antenna element is disposed below the coil element and the display module along the direction.

[0006] Preferably, the device further comprises: a controller connected to the switch element, wherein in response to an object supporting near field communication induction approaching the electronic device, the controller controls the switch element to switch the coil element into an open loop; or,

[0007] The controller is connected to the display module and the switch element, wherein in response to the panel displaying a specific picture, the controller controls the switch element to switch the coil element into an open loop.

[0008] Preferably, it also includes: a controller connected to the display module and the antenna element, wherein the controller receives an update frequency signal from the panel display screen, and at the first moment when the panel updates the screen, the controller controls the antenna element to suspend sending and receiving the near-field communication signal.

[0009] Preferably, at the second moment when the panel is not updating the screen, the controller controls the antenna element to transmit and receive the near field communication signal.

[0010] Preferably, the controller is further connected to the switch element, and in response to the antenna element suspending the transmission and reception of the near field communication signal, the controller controls the switch element to switch the coil element into a closed loop.

[0011] Preferably, the device further comprises: a controller connected to the display module and the antenna element, wherein in response to the antenna element transmitting and receiving the near field communication signal, the controller controls the display module to reduce the updating frequency of the panel display image.

[0012] According to another embodiment of the present invention, an electronic device using near-field communication is also proposed, which includes: a coil element; a display module including a panel; an antenna element for transmitting and receiving near-field communication signals, wherein the coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap; and a controller connected to the display module and the antenna element, the controller receives an update frequency signal of a screen displayed on the panel, and at a first moment when the panel updates the screen, the controller controls the antenna element to suspend transmitting and receiving the near-field communication signal; at a second moment when the panel does not update the screen, the controller controls the antenna element to transmit and receive the near-field communication signal.

[0013] Preferably, the coil element forms a ground plane, and the coil element and the antenna element at least partially overlap in a direction perpendicular to the ground plane.

[0014] Preferably, the antenna element is disposed below the coil element and the display module along the direction.

[0015] Preferably, it further comprises: a switch element connected to the coil element, wherein the switch element is used to switch the coil element into an open loop or a closed loop.

[0016] Preferably, the controller is connected to the switch element, and in response to an object supporting near field communication induction approaching the electronic device, the controller controls the switch element to switch the coil element into an open loop; or,

[0017] The controller is connected to the switch element, and in response to the panel displaying a specific picture, the controller controls the switch element to switch the coil element into an open circuit.

[0018] Preferably, the controller is further connected to the switch element, and in response to the antenna element suspending the transmission and reception of the near field communication signal, the controller controls the switch element to switch the coil element into a closed loop.

[0019] According to another embodiment of the present invention, an electronic device using near-field communication is also proposed, which includes: a coil element; a display module including a panel; an antenna element for transmitting and receiving near-field communication signals, wherein the coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap; and a controller connected to the display module and the antenna element, wherein in response to the antenna element transmitting and receiving the near-field communication signal, the controller controls the display module to reduce the update frequency of the panel display screen.

[0020] Compared to the prior art, the electronic device using near-field communication in the embodiment of the present invention can set the antenna element of the near-field communication under the panel, and through the design of the switch element, the coil element that provides electrostatic protection can switch the circuit according to the need of near-field signal reception and transmission, thereby avoiding the energy absorption of the coil element to perform near-field signal transmission, and can also provide a better electrostatic protection effect when near-field signal transmission is not needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram showing an electronic device in an open circuit state according to an embodiment of the present invention

[0022] Figure 2 A block diagram of an electronic device according to an embodiment of the present invention is shown; and

[0023] Figure 3 A schematic diagram illustrating an electronic device in a closed loop state according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0025] Please refer to Figure 1 to Figure 3 , Figure 1 An electronic device 100 using the Near Field Communication (NFC) technology according to an embodiment of the present invention is shown, which is in an open-loop state. Figure 2 FIG. 1 is a block diagram showing the configuration of an electronic device 100 according to an embodiment of the present invention. Figure 3 The electronic device 100 according to the embodiment of the present invention is shown to be in a closed loop state.

[0026] In the electronic device 100, as Figure 1 Figure 3As shown, the electronic device 100 mainly includes a coil element 110, a display module 120, an antenna element 130 and a switch element. The coil element 110, the display module 120 and the antenna element 130 are stacked upward along the Z axis, and the coil element 110 and the antenna element 130 at least partially overlap. In detail, "at least partially overlap" here means that the projections of the elements along one direction at least partially overlap. As in this example, the projections of the coil element 110 and the antenna element 130 along the Z axis at least partially overlap (that is, cover a completely overlapping range). The switch element 140 is connected to the coil element 110. In other words, the Z axis direction is the thickness direction of the electronic device 100, parallel to the display surface (viewing surface) of the panel 121.

[0027] In addition, the coil element 110 may be, but is not limited to, disposed around the panel 121, that is, the coil element 110 outlines a larger range than the panel 121 on the XY plane. In addition, the antenna element 130 may be, but is not limited to, disposed below the coil element 110 and the display module 120 along the Z axis. The coil element 110 is, for example, a metal coil, which forms a ground plane S1 to provide an electrostatic protection effect for the electronic device 100, and the ground plane S1 is substantially perpendicular to the Z axis. The display module 120 is, for example, a liquid crystal display module, which includes a panel 121 such as a liquid crystal, and the panel 121 can be selectively attached to another touch panel to become a touch display module. The display module 120 may also be other types of display modules, such as an organic light emitting diode (OLED) display module or a plasma display module.

[0028] Based on the application of near field communication technology in the electronic device 100, the antenna element 130 corresponds to a near field communication (NFC) antenna and is used to send and receive near field communication signals. The switch element 140 is, for example, a loop switch, which is used to switch the coil element 110 to an open loop or a closed loop, such as Figure 1 As shown, the switch element 140 switches the coil element 110 to an open circuit state. Figure 3 The switch element 140 switches the coil element 110 to a closed loop state. Whether the coil element 110 is an open loop or a closed loop, it can provide an electrostatic protection effect for the electronic device 100, but the electrostatic protection effect provided in the closed loop state is better.

[0029] Here, the function of the electronic device 100 of the embodiment of the present invention is described. As mentioned above, although the coil element 110 provides a better electrostatic protection effect for the electronic device 100 in the case of a closed loop, when the coil element 110 is a closed loop, the transmission energy of the near field communication signal will be absorbed by the closed coil element 110, thereby affecting the transmission quality of the signal. Therefore, by setting the switch element 140, when the antenna element 130 needs to transmit a near field communication signal, Figure 1As shown, the coil element 110 is switched to an open circuit by the switch element 140 to ensure the transmission quality of the near field communication signal. When the near field communication signal is not needed, Figure 3 As shown, the coil element 110 is switched into a closed loop by the switch element 140 to provide a good electrostatic protection effect.

[0030] like Figure 2 As shown, specifically, the electronic device 100 may further include a controller 150 to control the above functions, and the controller 150 is connected to the display module 120, the antenna element 130 and the switch element 140. Figure 1 As shown, when an object OB (e.g., a card supporting NFC induction) approaches the electronic device 100 (e.g., an NFC sensing device) to perform an action such as induction payment, it means that the antenna element 130 needs a near field communication signal of sufficient quality to enable the electronic device 100 to communicate with the card. At this time, the controller 150 can control the switch element 140 to switch the coil element 110 to an open circuit in response to the object OB supporting near field communication induction approaching the electronic device 100, so that the NFC induction can be performed smoothly.

[0031] Alternatively, in another case, the electronic device 100 may actively request near field communication induction, that is, the panel 121 of the display module 120 may display a specific screen (e.g., displaying words such as "Please bring the payment tool close to this device") to prompt the payer to bring the card supporting NFC induction close to the electronic device 100. At this time, the controller 150 may control the switch element 140 to switch the coil element 110 to an open circuit in response to the panel 121 displaying the specific screen, so that the NFC induction is smoothly performed.

[0032] When an object supporting NFC sensing communicates with an electronic device, noise interference from the panel of the display module can actually be measured, and the frequency of this noise is usually the same as the update frequency of the panel display screen. The electronic device 100 of the embodiment of the present invention is also designed accordingly to address this noise problem. That is, the controller 150 can receive an update frequency signal (such as a VSYNC signal) from the panel 121 display screen, and at the first moment when the panel 121 updates the screen, the controller 150 controls the antenna element 130 to suspend receiving and transmitting near field communication signals.

[0033] Furthermore, at the second moment when the panel 121 is not updating the screen, the controller 150 controls the antenna element 130 to receive and transmit the near-field communication signal. Accordingly, the screen update cycle can be known by receiving the update frequency signal from the panel 121. Therefore, when the panel 121 is updating the screen, the transmission of the near-field communication signal is first suspended to avoid the noise interference from the panel 121, and then the near-field communication signal is transmitted again at other non-screen update moments to improve the communication quality of the near-field communication signal. In addition, in response to the antenna element 130 suspending the transmission and reception of the near-field communication signal, the controller 150 can control the switch element 140 to switch the coil element 110 into a closed loop to provide the electronic device 100 with a better electrostatic protection effect.

[0034] Alternatively, if the controller 150 receives an update frequency signal from the panel 121 and learns that the image update cycle is not going smoothly, another design can be adopted to reduce the noise interference from the panel 121 of the display module 120. Because the higher the update frequency of the panel display image, the higher the degree of noise interference it actually causes; conversely, if the update frequency of the image is lower, the degree of noise interference it actually causes is also lower. In response to this feature, the controller 150 can control the display module 120 to reduce the update frequency of the panel 121 display image when responding to the antenna element 130 for transmitting and receiving near-field communication signals, so as to minimize the noise interference of the panel 121 and improve the communication quality of the near-field communication signal.

[0035] In summary, the electronic device using near field communication in the embodiment of the present invention can set the antenna element of the near field communication under the panel, and through the design of the switch element, the coil element that provides electrostatic protection can switch the circuit according to the need of near field signal reception and transmission, thereby avoiding the energy absorption of the coil element to perform near field signal transmission, and can also provide a better electrostatic protection effect when near field signal transmission is not needed.

[0036] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. An electronic device using near field communication, characterized in that: The electronic device comprises: A coil element for forming a ground plane; Display module, including panel; An antenna element for transmitting and receiving near field communication signals, wherein the coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap in a direction perpendicular to the ground plane; and The switch element is connected to the coil element, and is used to switch the coil element into an open loop or a closed loop.

2. The electronic device according to claim 1, wherein: The coil element is arranged around the panel, and the antenna element is arranged below the coil element and the display module along the direction.

3. The electronic device according to claim 1, wherein: Also includes: a controller connected to the switch element, wherein in response to an object supporting near field communication induction approaching the electronic device, the controller controls the switch element to switch the coil element into an open loop; or, A controller connected to the display module and the switch element, wherein in response to the panel displaying a specific image, the controller controls the switch element to switch the coil element to an open circuit; or, The controller is connected to the display module and the antenna element, wherein in response to the antenna element transmitting and receiving the near field communication signal, the controller controls the display module to reduce the refresh frequency of the panel display image.

4. The electronic device according to claim 1, wherein: Also includes: The controller is connected to the display module and the antenna element, wherein the controller receives an update frequency signal from the panel display screen, and at the first moment when the panel updates the screen, the controller controls the antenna element to suspend receiving and sending the near field communication signal.

5. The electronic device as claimed in claim 4, characterized in that: At a second moment when the panel does not perform screen updating, the controller controls the antenna element to transmit and receive the near field communication signal.

6. The electronic device as claimed in claim 4, characterized in that: The controller is also connected to the switch element. In response to the antenna element suspending the transmission and reception of the near field communication signal, the controller controls the switch element to switch the coil element into a closed loop.

7. An electronic device using near field communication, characterized in that: The electronic device comprises: A coil element for forming a ground plane; Display module, including panel; An antenna element for transmitting and receiving near field communication signals, wherein the coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap in a direction perpendicular to the ground plane; and A controller is connected to the display module and the antenna element. The controller receives an update frequency signal of a screen displayed on the panel. At a first moment when the panel updates the screen, the controller controls the antenna element to suspend receiving and sending the near-field communication signal. At a second moment when the panel does not update the screen, the controller controls the antenna element to receive and send the near-field communication signal.

8. The electronic device as claimed in claim 7, characterized in that: The antenna element is arranged below the coil element and the display module along the direction.

9. The electronic device as claimed in claim 7, characterized in that: Also includes: The switch element is connected to the coil element, and is used to switch the coil element to an open loop or a closed loop.

10. The electronic device according to claim 9, wherein: The controller is connected to the switch element, and in response to an object supporting near field communication induction approaching the electronic device, the controller controls the switch element to switch the coil element into an open loop; or, The controller is connected to the switch element, and in response to the panel displaying a specific picture, the controller controls the switch element to switch the coil element into an open circuit; or, The controller is also connected to the switch element. In response to the antenna element suspending the transmission and reception of the near field communication signal, the controller controls the switch element to switch the coil element into a closed loop.

11. An electronic device using near field communication, characterized in that: The electronic device comprises: A coil element for forming a ground plane; Display module, including panel; An antenna element for transmitting and receiving near field communication signals, wherein the coil element, the display module and the antenna element are stacked, and the coil element and the antenna element at least partially overlap in a direction perpendicular to the ground plane; and The controller is connected to the display module and the antenna element, wherein in response to the antenna element transmitting and receiving the near field communication signal, the controller controls the display module to reduce the refresh frequency of the panel display image.

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