CN216752312U - Electronic device - Google Patents

Abstract

The disclosure relates to the technical field of electronic terminal wireless communication, and discloses an electronic device; the electronic equipment comprises a display area, a key area and a coil structure; the key area is arranged on at least one side of the display area; the coil structure is arranged in the key area and is reused as a key and a near field communication antenna, the arrangement of a device on the electronic equipment is reduced, and meanwhile, one binding process can be reduced, so that the purposes of reducing the complexity of the device, reducing the process difficulty and reducing the cost are achieved; the near field communication antenna does not need to be arranged in a frame on the periphery of the display area, so that the width of the frame of the electronic equipment is reduced, the area occupation ratio of the display area of the electronic equipment can be improved, and the user experience can be improved; the near field communication antenna does not need to be arranged on the periphery of the display area, electromagnetic interference to the display area generated by the near field communication antenna in the working process can be greatly reduced, and normal operation of other modules or electronic components of the electronic equipment can be guaranteed.

Description

Electronic device

Technical Field

The disclosure relates to the technical field of electronic terminal wireless communication, in particular to an electronic device.

Background

Near field communication has been developed significantly in recent years and has been widely applied to electronic devices, however, in the prior art, a near field communication antenna is mostly arranged around a display panel or a touch panel, on one hand, the width of a frame of the electronic device is increased, on the other hand, the near field communication antenna may cause electromagnetic interference to the display panel and the touch panel, which is easy to cause abnormality of the display panel and the touch panel, and even may cause abnormal use of the touch panel and the display panel.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to overcome the above-mentioned disadvantage of large electromagnetic interference in the prior art, and to provide an electronic device with small electromagnetic interference.

According to an aspect of the present disclosure, there is provided an electronic device including:

a display area;

the key area is arranged on at least one side of the display area;

and the coil structure is arranged in the key area and is multiplexed into a key and a near field communication antenna.

In an exemplary embodiment of the present disclosure, the coil structure includes:

a first coil multiplexed as the key and the near field communication antenna.

In an exemplary embodiment of the present disclosure, the coil structure further includes:

the first coil is wound around the periphery of the conductor layer, and one end of the first coil, which is close to the conductor layer, is electrically connected to the conductor layer.

In an exemplary embodiment of the disclosure, a sum of an area of a forward projection of the wire of the first coil on the key area and an area of a forward projection of the conductor layer on the key area is greater than or equal to two thirds of the area of the key area.

In an exemplary embodiment of the present disclosure, the number of turns of the first coil is greater than or equal to 2.

In an exemplary embodiment of the present disclosure, the electronic device further includes:

and a second coil surrounding the periphery side of the first coil, or the second coil is integrally disposed at one side of the coil structure, and the second coil is used as a near field communication antenna.

In an exemplary embodiment of the present disclosure, the electronic device further includes:

the first end of the coil structure is electrically connected with the near field communication chip;

and the second end of the coil structure is electrically connected with the touch chip and the near field communication chip.

In an exemplary embodiment of the present disclosure, the electronic device further includes:

and the touch control chip and the near field communication chip are electrically connected with the main control chip.

In an exemplary embodiment of the present disclosure, the electronic device further includes:

the circuit board, the coil structure, the near field communication chip and the touch chip are all arranged on the circuit board.

In an exemplary embodiment of the present disclosure, the electronic device further includes:

a display panel disposed in the display area;

the touch panel is arranged on the display side of the display panel;

the cover plate covers the touch panel and one side, far away from the display panel, of the key area, the cover plate is provided with a groove, and the coil structure is located in the groove.

According to the electronic equipment, the coil structure is arranged in the key area and is reused as the key and the near field communication antenna, on one hand, the near field communication antenna does not need to be arranged in a frame on the peripheral side of the display area, so that the electronic equipment does not have the width increase of the frame due to the fact that the electronic equipment needs to have the near field communication function, the width of the frame of the electronic equipment is favorably reduced, the area occupation ratio of the display area of the electronic equipment can be further improved, and the user experience can be improved; on the other hand, the near field communication antenna does not need to be arranged on the periphery of the display area, so that the electromagnetic interference generated by the near field communication antenna on the display area in the working process can be greatly reduced, and the normal operation of other modules or electronic components of the electronic equipment can be guaranteed; on the other hand, the coil structure is multiplexed into the key and the near field communication antenna, the arrangement of one device on the electronic equipment is reduced, and meanwhile, one binding process can be reduced, so that the purposes of reducing the complexity of the device, reducing the process difficulty and reducing the cost are achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a first exemplary embodiment of an electronic device according to the present disclosure.

Fig. 2 is a schematic structural diagram of a second exemplary embodiment of the electronic device of the present disclosure.

Fig. 3 is a schematic structural diagram of a third exemplary embodiment of the electronic device of the present disclosure.

Fig. 4 is a schematic block diagram of a workflow of an electronic device of the present disclosure.

Description of reference numerals:

1. a display area; 2. a key area;

3. a circuit board; 31. a coil structure; 311. a first coil; 312. a conductor layer; 313. a second coil;

32. a near field communication chip; 33. a touch chip; 34. a first connecting wire; 35. a second connecting wire; 36. a third connecting wire; 37. a fourth connecting wire; 38. a fifth connecting wire; 39. a sixth connecting wire;

4. a cover plate; 41. a groove;

5. a display panel.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

With the rapid development of wearable electronic products, the functions of the wearable electronic products are more and more. Taking the smart band as an example, the smart band has functions of not only watching time, but also playing music, receiving WeChat messages, monitoring heart rate, NFC (Near Field Communication) mobile payment and the like. The NFC implements near field contactless communication by means of electromagnetic coupling, and interferes with other modules greatly. For example, the touch module is easily interfered, and the most common phenomenon is ghost points generated during touch. A typical NFC design uses a separate module and electromagnetically shields it to reduce interference with other modules, which is costly, adds a separate assembly process, and increases overall thickness. The design scheme is that the NFC is combined with the display module, the touch module and the like, namely, the NFC coil is integrated on the display module, the touch module and the like, so that the cost and the thickness can be effectively reduced, but the NFC can cause electromagnetic interference on other modules and influence the performance of other modules.

The disclosed example embodiments provide an electronic device, which, as shown in fig. 1-3, may include a display area 1, a key area 2, and a coil structure 31; the key area 2 is arranged on at least one side of the display area 1; a coil structure 31 is arranged in the key area 2, which coil structure 31 is multiplexed as a key and a near field communication antenna.

According to the electronic equipment, on one hand, the near field communication antenna does not need to be arranged in the frame on the peripheral side of the display area 1, so that the electronic equipment does not have the width increase of the frame due to the fact that the electronic equipment needs to have the near field communication function, the width of the frame of the electronic equipment is reduced, the area occupation ratio of the display area 1 of the electronic equipment can be improved, and the user experience can be improved; on the other hand, the near field communication antenna does not need to be arranged on the periphery of the display area 1, so that the electromagnetic interference generated by the near field communication antenna on the display area 1 in the working process can be greatly reduced, and the normal operation of other modules or electronic components of the electronic equipment can be ensured; on the other hand, the coil structure 31 is multiplexed into a key and a near field communication antenna, so that the arrangement of one device on the electronic equipment is reduced, and meanwhile, one binding process can be reduced, thereby achieving the purposes of reducing the complexity of the device, reducing the process difficulty and reducing the cost.

Near Field Communication is a mode for performing identification and data exchange with compatible devices in a short distance, the Near Field Communication antenna may be an NFC (Near Field Communication) antenna, the NFC antenna has the performance of fast speed, safety and stability in establishing Near Field Communication, and the NFC technology is more standardized, which is beneficial for the compatibility between electronic devices and other devices.

It is understood that the display area 1 is a module or an electronic device related to a display function for being provided to the electronic apparatus, such as a display panel; while the key area 2 is used for arranging the relevant keys for controlling the electronic device, for example the HOME key may be arranged.

Referring to fig. 1, in the present exemplary embodiment, coil structure 31 may include first coil 311, and first coil 311 is disposed in key region 2. The first coil 311 may be wound in a clockwise or counterclockwise manner, and the first coil 311 is multiplexed as a key and a near field communication antenna. In order to further improve the utilization efficiency of the key region 2, the first coil 311 may be configured to be circular, rectangular, oval, etc. according to the actual product.

When the electronic device uses the near field communication function, the magnetic field strength is a fixed value, and the electric potential can be increased by increasing the coverage area of the first coil 311 and the number of turns of the first coil 311, which is beneficial to ensuring the stability of the near field communication function.

The area of the orthographic projection of the conducting wire of the first coil 311 on the key area 2 is greater than or equal to two thirds of the area of the key area 2, and then the sum of the areas of the orthographic projection of the gaps between two adjacent conducting wires of the first coil 311 on the key area 2 is less than or equal to one third of the area of the key area.

The number of turns (turns) of the first coil 311 is greater than or equal to 2. So as to keep the first coil 311 having sufficient electrical potential to meet the stability requirement of the near field communication function.

It should be noted that the area of the center of the first coil 311 not covered by the conductive material is as small as possible, and the first coil 311 is kept as uniform as possible to meet the requirement when the first coil 311 is used as a key. For example, referring to fig. 1, in the case that one coil 311 is rectangular, a width a of a rectangle formed by the innermost turn of the first coil 311 surrounded by a wire may be equal to a gap B between two adjacent turns of the first coil 311; in the case where the first coil 311 is circular, a diameter of a circle around which the innermost turn of the first coil 311 is formed may be equal to a gap between adjacent turns of the first coil 311; in the case where the first coil 311 is square, a side length of a straight shape formed by the innermost turn of the conductive wire of the first coil 311 being wound around may be equal to a gap between two adjacent turns of the conductive wire of the first coil 311; therefore, the density of each position of the first coil 311 is ensured to be the same, so that the accuracy and uniformity of the first coil 311 as a key are ensured, and the function that the key cannot be realized when a user touches a certain position of the key is avoided.

Referring to fig. 2, in other example embodiments of the present disclosure, the coil structure 31 may further include a conductor layer 312, the first coil 311 is disposed around a peripheral side of the conductor layer 312, and one end of the first coil 311 close to the conductor layer 312 is electrically connected to the conductor layer 312. The first coil 311 may be wound around the peripheral side of the conductor layer 312 in a clockwise or counterclockwise manner. The conductor layer 312 is multiplexed with the first coil 311 as a key and a near field communication antenna.

In the present exemplary embodiment, the conductor layer 312 is provided in a rectangular shape, and in order to improve the utilization efficiency of the key region 2, the first coil 311 is provided in a rectangular shape; of course, in other example embodiments of the present disclosure, the conductor layer 312 may be provided in a circular shape, an oval shape, a polygonal shape, and the like, and also, in order to improve the utilization efficiency of the key region 2, the first coil 311 may be provided in a circular shape, an oval shape, a polygonal shape, and the like as the conductor layer 312; of course, when the area of key region 2 is large, first coil 311 may be formed in a shape different from that of conductor layer 312.

The sum of the orthographic projection area of the conductive wire of the first coil 311 in the key area 2 and the orthographic projection area of the conductive layer 312 in the key area 2 is greater than or equal to two thirds of the area of the key area 2, and then the sum of the orthographic projection area of the gap between two adjacent conductive wires of the first coil 311 in the key area 2 and the orthographic projection area of the gap between the first coil 311 and the conductive layer 312 in the key area 2 is less than or equal to one third of the area of the key area.

A distance C between the innermost turn of the first coil 311 and the conductor layer 312 may be equal to a gap B between adjacent turns of the conductive wire of the first coil 311. The number of turns of the first coil 311 is greater than or equal to 2.

The conductor layer 312 is provided to further increase the coverage area of the nfc antenna in the key region 2, so as to further improve the near field communication performance of the electronic device. The conductor layer 312 may be provided such that the center of the first coil 311 is completely covered by the conductor, and the area of the center of the first coil 311 not covered by the conductive material is zero, so as to satisfy the requirement when the coil structure 31 is used as a key.

Referring to fig. 3, in still other example embodiments of the present disclosure, the electronic apparatus may further include a second coil 313, the second coil 313 being around a circumference of the first coil 311, the second coil 313 serving as a near field communication antenna. The second coil 313 may be wound in a clockwise or counterclockwise direction.

In the present exemplary embodiment, first coil 311 is provided in a rectangular shape, and second coil 313 is also provided in a rectangular shape in order to improve the utilization efficiency of key region 2; of course, in other example embodiments of the present disclosure, the first coil 311 may be provided in a circular shape, an oval shape, a polygonal shape, etc., and also, in order to improve the utilization efficiency of the key region 2, the second coil 313 may be provided in a circular shape, an oval shape, a polygonal shape, etc. as with the first coil 311; of course, when the area of key region 2 is large, second coil 312 may be formed in a shape different from that of first coil 311.

Note that the coil structure 31 shown in fig. 3 is a structure including the first coil 311 and the conductor layer 312, that is, the coil structure 31 shown in fig. 3 is the same as the coil structure 31 shown in fig. 2; however, in some other example embodiments of the present disclosure, the second coil 313 may also be disposed on the peripheral side of the coil structure 31 shown in fig. 1, that is, the second coil 313 may also be disposed on the peripheral side of the coil structure 31 including only the first coil 311.

In addition, the second coil 313 may be provided in plural, and the plural second coils 313 may be provided in sequence around the circumference side of the first coil 311.

It is also possible that one side of the coil structure 31 is provided with one second coil 313, for example, two second coils 313 are provided, a gap is provided between the two second coils 313, and the coil structure 31 is provided in the gap, i.e., the two second coils 313 are oppositely provided on both sides of the coil structure 31. Of course, three second coils 313 may be provided on three sides of the coil structure 31 in a one-to-one correspondence.

On one hand, even if the second coil 313 is arranged when the coil structure 31 is damaged, the second coil 313 can still work normally, and the stability of the near field communication function of the electronic equipment can be guaranteed. On the other hand, the second coil 313 may further increase the coverage area of the near field communication antenna within the key region 2; on the other hand, by the arrangement of the second coil 313, signals between the second coil 313 and the coil structure 31 can be enhanced in a superimposed manner, and the near field communication performance of the electronic device is further improved.

As shown in fig. 1 to fig. 3, the electronic device may further include a circuit board 3, and the circuit board 3 may be a flexible circuit board 3. The coil structure 31 and the second coil 313 are both provided on the circuit board 3. Of course, the circuit board 3 may also be a rigid printed circuit board 3.

The circuit board 3 is also provided with a near field communication chip 32 and a touch chip 33. A first end of the coil structure 31 is electrically connected to the near field communication chip 32; a second end of the coil structure 31 is electrically connected to the touch chip 33 and the near field communication chip 32.

Specifically, referring to fig. 1, one end of the first coil 311 located inside the loop is a first end of the coil structure 31, and one end of the first coil 311 located outside the loop is a second end of the coil structure 31; a first end of the first coil 311 is electrically connected to the near field communication chip 32 through a first connecting wire 34; the second end of the first coil 311 is electrically connected to the touch chip 33 and the near field communication chip 32 through the second connecting wire 35 and the two third connecting wires 36. Of course, the end of the first coil 311 located outside the loop may be the first end of the coil structure 31, and the end of the first coil 311 located inside the loop may be the second end of the coil structure 31. The first end of the first coil 311 may also be connected to the touch chip 33.

Referring to fig. 2, the conductor layer 312 is a first end of the coil structure 31, and an end of the first coil 311 located outside the coil is a second end of the coil structure 31; the conductor layer 312 is electrically connected to the near field communication chip 32 through the first connection wire 34; the second end of the first coil 311 is electrically connected to the touch chip 33 and the near field communication chip 32 through the second connecting wire 35 and the two third connecting wires 36. Of course, the conductor layer 312 may be the second end of the coil structure 31, and the end of the first coil 311 located outside the coil may be the first end of the coil structure 31. The conductive layer 312 may also be connected to the touch chip 33.

Referring to fig. 3, the connection manner of the coil structure 33, the touch chip 33 and the nfc chip 32 is the same as that in fig. 2, and therefore, the description thereof is omitted. Both ends of the second coil 313 are electrically connected to the near field communication chip 32 through two sixth connection wires 39 in a one-to-one correspondence, so that the second coil 313 can be used as a near field communication antenna.

The electronic device may further include a main control chip, and the touch control chip 33 and the near field communication chip 32 are electrically connected to the main control chip (not shown in the figure). The touch control chip 33 is electrically connected to the main control chip through a fourth connecting wire 37, and the near field communication chip 32 is electrically connected to the main control chip through a fifth connecting wire 38. The main control chip may also be disposed on the circuit board 3. Of course, the main control chip may also be disposed on another circuit board 3, and then the two circuit boards 3 are connected through the connector, so as to connect the touch control chip 33 and the nfc chip 32 to the main control chip.

It should be noted that in fig. 1 to 3, the coil structure 33 and the plurality of connecting leads are represented by different line types in order to show that they are formed on different conductive layers of the circuit board 3. The circuit board 3 may be a double-layer board. For the exemplary embodiment shown in fig. 1 and 2, in which the second connecting lead 35, the first coil 311 and the conductor layer 312 are arranged on a first conductive layer of the circuit board 3, the first connecting lead 34, the third connecting lead 36, the fourth connecting lead 37 and the fifth connecting lead 38 are arranged on a second conductive layer of the circuit board 3, the structures on the first conductive layer and the second conductive layer are connected by vias when connection is required.

For the exemplary embodiment shown in fig. 3, the first coil 311, the second coil 313 and the conductor layer 312 are arranged on a first conductive layer of the circuit board 3, the first connecting lead 34, the second connecting lead 35, the third connecting lead 36, the fourth connecting lead 37, the fifth connecting lead 38 and the sixth connecting lead 39 are arranged on a second conductive layer of the circuit board 3, and the structures on the first conductive layer and the second conductive layer are connected by vias when they are required to be connected.

Of course, the circuit board 3 may also be a three-layer board or a multi-layer board as required, and the arrangement of the first coil 311, the second coil 313, the conductor layer 312 and the plurality of connecting wires may be arranged as required, all falling within the scope of protection of the present disclosure.

Referring to fig. 4, a schematic block diagram of a workflow of an electronic device of the present disclosure is shown. After the electronic device starts, a user clicks a program to determine whether a Near Field Communication (NFC) function needs to be started, and after determining that the NFC function needs to be started, the main control chip outputs an instruction to the touch chip 33 to disconnect a channel between the touch chip 33 and the coil structure 31, and meanwhile, the main control chip outputs an instruction to the near field communication chip 32 to enable the coil structure 31 to operate as a near field communication antenna to transmit radio frequency. After the coil structure 31 is used as the near field communication antenna, the main control chip outputs an instruction to the touch chip 33 to enable the channel between the touch chip 33 and the coil structure 31 to work normally, and the coil structure 31 is used as a key, that is, the touch chip 33 scans normally to detect whether the coil structure 31 has a touch signal.

On the contrary, after determining that the near field communication function does not need to be started, the main control chip outputs an instruction to the near field communication chip 32 to disconnect the channel between the near field communication chip 32 and the coil structure 31 to be inoperative, and simultaneously, the main control chip outputs an instruction to the touch control chip 33 to allow the coil structure 31 to be used as a key, that is, the touch control chip 33 normally scans to detect whether the coil structure 31 has a touch control signal.

The electronic device may further include a display panel 5, a touch panel (not shown in the figure), and a cover plate 4; the display panel 5 is arranged in the display area 1; the touch panel is arranged on the display side of the display panel 5; the cover plate 4 covers the touch panel and one side of the key area 2 far away from the display panel 5, a groove 41 is arranged on the surface of the cover plate 4 facing the key area 2, and the coil structure is located in the groove 41.

The display function of the electronic equipment is realized through the setting of the display panel 5, the touch function of the electronic equipment is realized through the setting of the touch panel, and the cover plate 4 covers the side, away from the display panel 5, of the touch panel and the key area 2, so that the effect of protecting the display panel 5, the touch panel and the coil structure 31 can be realized, and meanwhile, the electronic equipment is more attractive.

The apron 4 is provided with recess 41 towards pressing the button district 2 on the surface, and coil structure 31 is located recess 41, is favorable to reducing electronic equipment's thickness, can further improve user experience, and especially when electronic equipment is wearable equipment, the whole thickness of electronic equipment reduces, can improve the comfort level that the user wore.

Illustratively, the electronic device is at least one of a wearable electronic device, a mobile terminal, a computer, a display, and a television.

The electronic device is a wearable electronic device, and is multiplexed into the key and the near field communication antenna through the coil structure 31, so that the frame of the wearable electronic device can be reduced, the stable work of the display panel 5 of the wearable electronic device can be ensured, and the wearable electronic device can have a near field communication function, for example, payment, charging, access control release, data transmission and the like can be performed through the wearable electronic device.

The electronic device is a mobile terminal, and is multiplexed into a key and a near field communication antenna through the coil structure 31, so that the frame of the mobile terminal can be reduced, the stable operation of the display panel 5 of the mobile terminal can be ensured, and the mobile terminal can have a near field communication function, such as payment, recharging, access control release, data transmission and the like through the mobile terminal device.

The electronic device is a computer, such as a tablet computer, and is multiplexed into the key and the nfc antenna through the coil structure 31, so that the frame of the computer can be reduced, the stable operation of the display panel 5 of the computer can be ensured, and the computer can have the nfc function, such as performing non-contact payment, recharging, data transmission, and the like through the computer device.

The electronic device is a display, and the coil structure 31 is multiplexed into the key and the nfc antenna, so that the frame of the display can be reduced, stable operation of the display can be ensured, and the near field communication function of the display can be realized, for example, non-contact payment, recharging, data transmission and the like can be performed through the display.

The electronic device is a television, and the coil structure 31 is multiplexed into a key and a near field communication antenna, so that the frame of the television can be reduced, the stable operation of the display panel 5 of the television can be ensured, and the near field communication function of the television can be realized, such as non-contact payment, recharging, data transmission and the like through a display.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. An electronic device, comprising:

a display area;

the key area is arranged on at least one side of the display area;

and the coil structure is arranged in the key area and is multiplexed into a key and a near field communication antenna.

2. The electronic device of claim 1, wherein the coil structure comprises:

a first coil multiplexed as the key and the near field communication antenna.

3. The electronic device of claim 2, wherein the coil structure further comprises:

the first coil is wound around the periphery of the conductor layer, and one end of the first coil, which is close to the conductor layer, is electrically connected to the conductor layer.

4. The electronic device of claim 3, wherein a sum of an area of a forward projection of the wire of the first coil on the key area and an area of a forward projection of the conductor layer on the key area is greater than or equal to two-thirds of the area of the key area.

5. An electronic device according to claim 2 or 3, wherein the number of turns of the first coil is greater than or equal to 2.

6. The electronic device according to claim 2 or 3, characterized in that the electronic device further comprises:

and a second coil surrounding the periphery side of the first coil, or the second coil is integrally disposed at one side of the coil structure, and the second coil is used as a near field communication antenna.

7. The electronic device of claim 1, further comprising:

the first end of the coil structure is electrically connected with the near field communication chip;

and the second end of the coil structure is electrically connected with the touch chip and the near field communication chip.

8. The electronic device of claim 7, further comprising:

and the touch control chip and the near field communication chip are electrically connected with the main control chip.

9. The electronic device of claim 7, further comprising:

the circuit board, the coil structure, the near field communication chip and the touch chip are all arranged on the circuit board.

10. The electronic device of claim 1, further comprising:

a display panel disposed in the display area;

the touch panel is arranged on the display side of the display panel;

the cover plate covers the touch panel and one side, far away from the display panel, of the key area, the cover plate is provided with a groove, and the coil structure is located in the groove.

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