TWI794327B - Wireless device - Google Patents

Abstract

A wireless device is provided and includes a coil assembly. The coil assembly includes a first coil, a second coil, a first contact, a second contact, and a third contact. The second coil is configured to be connected to the first coil in series. The first contact is configured to be connected to a first end of the first coil. The second contact is configured to be connected between the first coil and the second coil. The third contact is configured to be connected to a second end of the second coil. The first contact, the first coil and the second contact form a first circuit loop, and the first contact, the first coil, the second coil and the third contact form a second circuit loop.

Description

wireless device

The present disclosure relates to a wireless device, in particular to a wireless device with at least two layers of circuits.

With the development of technology, many electronic devices (such as tablets or smart phones) now have the function of wireless charging. The user can place the electronic device on a wireless charging transmitter, so that the wireless charging receiver in the electronic device generates current by electromagnetic induction or electromagnetic resonance to charge the battery. Due to the convenience of wireless charging, electronic devices with wireless charging modules are gradually becoming popular with the public.

Generally speaking, a wireless charging device includes a magnetically permeable substrate carrying a coil. Wherein, when the coil is energized to operate in a wireless charging mode or a wireless communication mode, the magnetically permeable substrate can make the magnetic field lines emitted by the coil more concentrated to obtain better performance. However, the existing coil winding methods cannot meet various requirements for wireless devices, such as better charging, communication performance and smaller thickness.

Therefore, how to design a wireless device that can meet various needs of users is a subject worth discussing and solving.

In view of this, the present disclosure proposes a wireless device to solve the above problems.

An embodiment of the present disclosure provides a wireless device, including a coil assembly, and the coil assembly includes a first coil, a second coil, a first contact, a second contact and a third contact. The second coil is configured to be connected in series with the first coil. The first contact is configured to be connected to a first end of the first coil. The second contact is configured to be connected between the first coil and the second coil. The third contact is configured to be connected to a second end of the second coil. The first contact, the first coil and the second contact form a first circuit loop, and the first contact, the first coil, the second coil and the third contact form a second circuit loop.

According to some embodiments of the present disclosure, the first circuit loop operates in a near field communication frequency band, and the second circuit loop operates as a transmitting end or a receiving end of power transmission.

According to some embodiments of the present disclosure, the second coil surrounds a portion of the first coil.

An embodiment of the disclosure provides a wireless device, including a first coil. The first coil includes a first metal wire and a second metal wire. The first metal wire is arranged on a first plane and has a first spiral structure. The second metal wire is arranged on a second plane and has a second spiral structure, and the second metal wire is electrically connected to the first metal wire. The first metal wire and the second metal wire extend continuously.

According to some embodiments of the present disclosure, the wireless device further includes a connection element disposed on a third plane, and the connection element is electrically connected to the first end of the first coil.

According to some embodiments of the present disclosure, the third plane is located between the first plane and the second plane.

According to some embodiments of the present disclosure, the first metal wire is connected in parallel to the second metal wire.

According to some embodiments of the present disclosure, the wireless device further includes a plurality of metal connectors disposed around the connectors to electrically connect the first and second metal wires.

According to some embodiments of the present disclosure, the wireless device further includes a first separation part and a second separation part. The first separation part is arranged between two adjacent turns of the first metal wire. The second separation part is arranged between two adjacent turns of the second metal wire. The first metal wire has a first inclined section, the second metal wire has a second inclined section, the first separation part is electrically connected to the second metal wire through a conducting element and the second inclined section, and the second metal wire is electrically connected to the second inclined section. The two separation parts are electrically connected to the first metal wire through another conducting element and the first inclined section.

According to some embodiments of the present disclosure, the wireless device further includes a plurality of pseudo metal wires disposed on the first plane and adjacent to a first terminal contact and a second terminal contact. Furthermore, these quasi-metal wires are electrically independent from each other.

According to some embodiments of the present disclosure, the wireless device further includes a metal block disposed on the first plane, and the pseudo metal wires surround the metal block and are electrically independent from the metal block.

According to some embodiments of the present disclosure, the wireless device further includes at least one electronic component and a plurality of pseudo-metal wires. The electronic components are arranged on the second plane. A plurality of quasi-metal wires are arranged on the first plane corresponding to the positions of the electronic components.

According to some embodiments of the present disclosure, the width of the innermost turn of the first helical structure is narrower than the width of the outermost turn of the first helical structure.

According to some embodiments of the present disclosure, the first helical structure has a middle circle, which is disposed between the innermost circle and the outermost circle, wherein a first slit is formed on the middle circle, and the first slit divides the middle circle into a left half and a right half, and the width of the left half or the right half is smaller than the width of the innermost circle of the first helical structure.

According to some embodiments of the present disclosure, the width of each turn of the first helical structure gradually increases from inside to outside.

According to some embodiments of the present disclosure, the first metal wire includes a plurality of straight sections and a plurality of curved sections, and the width of each curved section is greater than the width of the connected straight sections

According to some embodiments of the present disclosure, the first metal wire has a plurality of slits respectively formed on the curved sections.

According to some embodiments of the present disclosure, the winding directions of the first metal wire and the second metal wire are opposite.

The disclosure provides a wireless device including a coil unit. In some embodiments, the coil unit may include a first coil and a second coil, the first coil is connected in series with the second coil, and the first coil is connected to a first contact and a second contact, and The second coil is connected to the second contact and the third contact, that is, the second contact is connected between the first coil and the second coil.

Therefore, the first contact, the first coil and the second contact can form a first circuit loop, and the first contact, the first coil, the second coil and the third contact can form a second circuit loop. Wherein, the first circuit loop is operable in a near field communication (NFC) frequency band, and the second circuit loop is operable as a transmitting end or a receiving end of power transmission to perform the function of wireless charging. Therefore, the wireless device can perform the functions of wireless communication and wireless charging at the same time.

In order to make the purpose, features, and advantages of the present disclosure more comprehensible, the following specific embodiments are described in detail with accompanying figures. Wherein, the arrangement of each element in the embodiment is for illustration, not for limiting the present disclosure. In addition, the partial repetition of the symbols in the figures in the embodiments is for the purpose of simplifying the description, and does not imply the relationship between different embodiments. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms used are for illustration and not for limitation of the present disclosure.

It must be understood that elements not specifically described or illustrated may exist in various forms well known to those skilled in the art. In addition, when a layer is "on" other layers or substrates, it may mean that it is "directly" on other layers or substrates, or that a certain layer is on other layers or substrates, or that it is interposed between other layers or substrates. other layers.

In addition, relative terms such as "lower" or "bottom" and "higher" or "top" may be used in the embodiments to describe the relative relationship of one element to another element in the drawings. It will be appreciated that if the illustrated device is turned over so that it is upside down, elements described as being on the "lower" side will become elements on the "higher" side.

Here, the terms "about" and "approximately" usually mean within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The quantities given here are approximate quantities, which means that the meanings of "about" and "approximately" can still be implied without specific instructions.

Please refer to FIG. 1 , which is an exploded view of a wireless device 100 according to an embodiment of the present disclosure. As shown in FIG. 1 , the wireless device 100 may include a coil component 102 , an adhesive layer 104 , and a magnetically conductive plate 106 . In this embodiment, the coil component 102 is disposed on the magnetic permeable plate 106 , and the coil component 102 can be connected to the magnetic permeable plate 106 by using the adhesive layer 104 . Wherein, the adhesive layer 104 can be adhesive tape or any other materials that can be used for connection.

In addition, in this embodiment, the magnetically conductive plate 106 can be a ferrite (Ferrite), but not limited thereto. For example, in other embodiments, the magnetically conductive plate 106 may also include nanocrystalline materials. The magnetically permeable plate 106 can have a magnetic permeability corresponding to the coil component 102 , so that the electromagnetic wave of the coil component 102 is more concentrated.

As shown in FIG. 1 , the coil component 102 includes a substrate 108 and a coil structure 110 , and the coil structure 110 is formed on the substrate 108 . In this embodiment, the substrate 108 is a flexible circuit board, but it is not limited thereto, as long as any substrate that can be used to form the coil structure 110 is within the scope of the present disclosure. Furthermore, the coil assembly 102 can be used as a charging coil for wirelessly charging an external electronic device (such as a tablet computer or a smart phone).

For example, the coil structure 110 of the coil assembly 102 can be a resonant charging coil based on the standard of the Alliance for Wireless Power (A4WP), but not limited thereto. In addition, the coil structure 110 can be based on the standard of the Wireless Power Consortium (WPC), such as the Qi standard, so as to be an inductive charging coil. Therefore, this embodiment enables the wireless device 100 to correspond to different charging methods at the same time, so as to increase the applicable range. For example, in short distance (for example, less than 1cm), use inductive operation; and in long distance, use resonance operation.

Next, please refer to FIG. 2 to FIG. 5. FIG. 2 is a schematic top view of the coil assembly 102 according to an embodiment of the present disclosure, and FIG. 3 is a schematic view of the coil assembly 102 according to an embodiment of the present disclosure on a first plane 1021 Figure 4 is a schematic structural view of the coil assembly 102 according to this embodiment of the present disclosure on a third plane 1023, and Figure 5 is a schematic view of the coil assembly 102 according to this embodiment of the present disclosure on a second plane 1022 Schematic.

In this embodiment, the substrate 108 of the coil component 102 includes a first layer structure, a second layer structure and a third layer structure, which are respectively located on the first plane 1021, the second plane 1022 and the third plane 1023, and the third plane 1023 is located between the first plane 1021 and the second plane 1022 . It should be noted that the coil structure 110 in FIG. 5 is located below the second plane 1022 , but for the sake of clarity, the coil structure 110 in FIG. 5 is still represented by a solid line.

As shown in Figures 3 to 5, the coil structure 110 (the first coil) of the coil assembly 102 may include a first metal wire 111, a second metal wire 112 and a connector 114, the first metal wire 111 is set On the first plane 1021 , the second metal wire 112 is disposed on the second plane 1022 , and the connecting element 114 is disposed on the third plane 1023 . Moreover, as shown in FIG. 2 , the coil assembly 102 may further have a first terminal contact 103 and a second terminal contact 105 configured to be electrically connected to an external circuit, such as a control chip.

Next, as shown in FIG. 3 , the first metal wire 111 forms a first spiral structure, has a first end 1111 and a second end 1112 , and the second end 1112 is connected to the second terminal contact 105 . As shown in FIG. 4 , one end of the connector 114 is connected to the first terminal contact 103 . In addition, as shown in FIG. 5 , the second metal wire 112 forms a second helical structure and has a first end 1121 and a second end 1122 . It should be noted that in this embodiment, the first metal wire 111 and the second metal wire 112 extend continuously.

Moreover, the coil assembly 102 may further include a plurality of metal connecting parts (also called vias), configured to penetrate through the substrate 108 to connect the first metal wire 111 and the second metal wire 112 . For example, as shown in FIG. 2 to FIG. 5, the coil assembly 102 includes a metal connector MC1 and a metal connector MC2, the metal connector MC1 is configured to connect to the first end 1111 of the first metal wire 111, the connection 114 , and the first end 1121 of the second metal wire 112 . Moreover, the second end 1122 of the second metal wire 112 is electrically connected to the first metal wire 111 through the metal connecting member MC2 .

As shown in FIG. 3 and FIG. 4 , the coil assembly 102 further includes a metal connector MC3 configured to connect the connector 114 and an extension wire 1031 . In addition, the coil assembly 102 further includes a plurality of metal connectors MC5 and MC6 disposed around the connector 114 . As shown in FIGS. 2 to 5 , a plurality of metal connectors MC5 and MC6 are respectively disposed on both sides of the connector 114 . These metal connectors MC5 and MC6 are configured to electrically connect the first metal wire 111 and the second metal wire 112 so that the first helical structure of the first metal wire 111 and the second helical structure of the second metal wire 112 Part of the structure is connected in parallel, so that the effect of reducing the overall impedance of the coil assembly 102 can be achieved, and the number of turns of the coil assembly 102 can also be increased.

With the structural configuration of the coil component 102 of this embodiment, the integrity of the first metal wire 111 and the second metal wire 112 can be maintained without cutting the first metal wire 111 or the second metal wire 112 due to the arrangement of the connecting piece 114 Structure.

Next, please refer to FIG. 6 , which is a schematic top view of a coil assembly 102A according to another embodiment of the present disclosure. The coil component 102A is similar to the coil component 102 , the difference between the two is that, in this embodiment, in order to increase the overall strength of the coil component 102A, the coil component 102A may further include a plurality of quasi-metal wires disposed on the first plane 1021 . In this embodiment, the coil component 102 includes a plurality of pseudo metal wires 1024 and pseudo metal wires 1025 , and the pseudo metal wires 1025 are adjacent to the first terminal contact 103 and the second terminal contact 105 . Wherein, the pseudo metal wires 1024 and the pseudo metal wires 1025 are electrically independent from the first metal wire 111 and the second metal wire 112 , and the plurality of pseudo metal wires 1024 and the plurality of pseudo metal wires 1025 are electrically independent from each other.

By setting the pseudo-metal wires 1024 and the pseudo-metal wires 1025, the local hardness of the substrate 108 can be increased, and the pseudo-metal wires 1024 and the pseudo-metal wires 1025 can be used to position the overall structure, so as to improve the positioning accuracy and the convenience of assembly. . In this embodiment, the pseudo metal wires 1024 and the pseudo metal wires 1025 are implemented in a straight line shape, but not limited thereto, for example, they can also be implemented in a circular or rectangular shape in other embodiments.

Moreover, in this embodiment, the coil component 102A may further include a metal block 1026 disposed on the first plane 1021 to further increase the overall strength of the coil component 102 . In addition, a plurality of quasi-metal wires 1025 surround the metal block 1026 and are electrically independent from the metal block 1026 .

Moreover, in the embodiment of the present disclosure, the coil assembly 102A may further include at least one electronic component (not shown in the figure), which is disposed on the second plane 1022, and the position of the electronic component is corresponding to that of the first plane 1021. The position of the metal block 1025 and part of the pseudo-metal wire 1025 . Therefore, the solder joints of the electronic components will not be easily damaged when impacted, thereby improving the reliability of the wireless device.

Please refer to FIG. 6 and FIG. 7 at the same time. FIG. 7 is a schematic cross-sectional view of line segment A-A' in FIG. 6 according to an embodiment of the present disclosure. In this embodiment, as shown in FIG. 6 , the coil assembly 102 may further include a plurality of metal connectors MC5 and MC6 disposed on both sides of the first connector 114 . As shown in FIG. 7, the metal connector MC5 and the metal connector MC6 can make a part of the first helical structure of the first metal wire 111 parallel to a part of the second helical structure of the second metal wire 112, so that the coil can be reduced. The effect of the overall impedance of the assembly 102A, and the number of turns of the coil assembly 102A can also be increased.

Furthermore, as shown in FIG. 6 , the first metal wire 111 may include a plurality of straight sections SS and a plurality of curved sections CS. In this embodiment, the width of each curved section CS is greater than the width of the connected straight section SS. For example, as shown in FIG. 6, the outermost straight section SS has a width W1, and the curved section CS connected thereto has a width W2, and the width W2 is greater than the width W1. With such a structural design, the area of the coil component 102A can be reduced to achieve the miniaturization of the wireless device.

Next, please refer to FIG. 6 and FIG. 8 . FIG. 8 is an enlarged view of the region X in FIG. 6 according to an embodiment of the present disclosure. As shown in FIG. 8 , the first helical structure has an innermost coil 116 , a first intermediate coil 118 , a second intermediate coil 120 and an outermost coil 122 . Wherein, the innermost ring 116 has a width WA, the outermost ring 122 has a width WX, and the width WA of the innermost ring 116 is narrower than the width of the outermost ring 122 . In the embodiment of the present disclosure, the widths of different circles of the first metal wire 111 can be correspondingly changed according to the strength of the magnetic field. Reduces losses due to eddy currents.

In this embodiment, a plurality of slits may be formed on the first helical structure of the first metal wire 111 , which are respectively formed on the curved section CS. Specifically, as shown in FIG. 8, the first intermediate ring 118 and the second intermediate ring 120 are arranged between the innermost ring 116 and the outermost ring 122, and a first slit is formed on the second intermediate ring 120. 120S, and the first slit 120S divides the second middle ring 120 into a left half 1201 and a right half 1202 . The left half 1201 and the right half 1202 respectively have a width WC, and the width WC is smaller than the width WA of the innermost coil 116 of the first helical structure.

Moreover, in this embodiment, the width of the first metal wire 111 corresponds to the width of the second metal wire 112 , and the width of each turn of the first helical structure of the first metal wire 111 gradually increases from inside to outside. That is, the width WA is smaller than a width WB of the first middle ring 118 , the width WB is smaller than the width WX of the outermost ring 122 , and the width WC is smaller than the width WA. Based on the structural configuration of this embodiment, the loss of eddy current can be reduced and the current density can be made more even.

Please refer to FIG. 9 to FIG. 11. FIG. 9 is a schematic top view of a coil assembly 202 of a wireless device according to another embodiment of the present disclosure. FIG. 10 is a schematic diagram of a coil assembly 202 according to an embodiment of the present disclosure. A schematic diagram of the upper structure of the first plane 2021, and FIG. 11 is a schematic diagram of the lower structure of the coil component 202 on a second plane 2022 according to this embodiment of the present disclosure.

The coil component 202 of this embodiment is similar to the aforementioned coil component 102, the difference is that in this embodiment, as shown in FIG. The inner side of the two metal wires 112 ), and the first terminal contact 103 is connected to the first end 1111 of the first metal wire 111 . Furthermore, the second terminal contact 105 is disposed outside the first metal wire 111 and connected to the second end 1112 of the first metal wire 111 .

Based on the structural design of this embodiment, the coil assembly 202 can be electrically connected to an external circuit through the first terminal contact 103 to increase the convenience of testing the coil assembly 202 . In addition, since the coil assembly 202 does not need to be provided with the connecting piece 114 that cuts off the first metal wire 111 or the second metal wire 112 , the integrity of the coil of the coil assembly 202 can be ensured.

Please refer to FIG. 12 to FIG. 14. FIG. 12 is a schematic top view of a coil assembly 202A of a wireless device according to another embodiment of the present disclosure, and FIG. A schematic diagram of the upper structure of the plane 2021, and FIG. 14 is a schematic diagram of the lower structure of the coil component 202A in the second plane 2022 according to this embodiment of the present disclosure.

The coil assembly 202A of this embodiment is similar to the aforementioned coil assembly 202, the difference is that in this embodiment, as shown in Figures 13 and 14, the winding direction of the first metal wire 111 and the second metal wire 112 are opposite, and They are connected in series with each other through metal connectors MC. Wherein, the first end 1111 of the first metal wire 111 is electrically connected to the first end 1121 of the second metal wire 112 through the metal connector MC.

In addition, as shown in FIG. 12 and FIG. 14, the coil assembly 202A further has an extension wire 1031, and the second end 1122 of the second metal wire 112 is electrically connected to the extension wire 1031 and the second metal wire 112 through the metal connector MC. A terminal contact 103 . Moreover, as shown in FIG. 12 and FIG. 13 , the second end 1112 of the first metal wire 111 is connected to the second terminal contact 105 .

Based on the structural design of this embodiment, the coil assembly 202 can improve the working efficiency of the coil, increase the number of turns of the coil and reduce the overall resistance of the coil assembly 202A.

In addition, in other embodiments of the present disclosure, a plurality of coil assemblies 202A can be stacked, so that the plurality of coil assemblies 202A are connected in parallel to each other through the first terminal contact 103 and the second terminal contact 105, so as to increase the coil The number of turns and the purpose of reducing the overall resistance.

Please refer to FIG. 15 to FIG. 17. FIG. 15 is a schematic top view of a coil assembly 302 of a wireless device according to another embodiment of the present disclosure, and FIG. 16 is a schematic diagram of a coil assembly 302 according to an embodiment of the present disclosure. A schematic diagram of the upper structure of a plane 3021, and FIG. 17 is a schematic diagram of the lower structure of the coil component 302 on a second plane 3022 according to this embodiment of the present disclosure.

In this embodiment, the coil assembly 302 of the wireless device includes a first coil, a second coil, a first contact CP1 , a second contact CP2 , and a third contact CP3 . The first coil includes a first metal wire 304 and a second metal wire 306 respectively disposed on the second plane 3022 and the first plane 3021 . In addition, the second coil includes a third metal wire 308 , wherein the third metal wire 308 is disposed on the first plane 3021 and surrounds the second metal wire 306 (a part of the first coil).

In this embodiment, as shown in FIG. 17, the first metal wire 304 of the first coil has a first end 3041, and the first contact CP1 is configured to be connected to the first end 3041 of the first coil. Next, the first metal wire 304 forms a first helical structure, and has an end portion 3043 located inside the first helical structure. The end 3043 of the first metal wire 304 is electrically connected to the end 3061 of the second metal wire 306 in FIG. 16 through one or more metal connectors MC1 .

As shown in FIG. 16 , the second metal wire 306 forms a second helical structure, and the second metal wire 306 of the first coil has a second end 3063 disposed outside the second helical structure. Furthermore, the third metal wire 308 of the second coil has a first end 3081 and a second end 3083 . The first end 3081 is connected to the second end 3063 of the second metal wire 306 so that the second coil is connected in series with the first coil. In addition, the third contact point CP3 is configured to be connected to the second end 3083 of the second coil.

In addition, as shown in FIG. 15 to FIG. 17, the second contact point CP2 is configured to be electrically connected to the second end 3063 of the second metal wire 306 and the second end 3063 of the second metal wire 306 through a connecting wire 310 and two metal connectors MC2. The first end 3081 of the three metal wires 308 . That is, the second contact point CP2 is configured to be connected between the first coil and the second coil.

Therefore, in this embodiment, the first contact point CP1, the first coil and the second contact point CP2 can form a first circuit loop, and the first contact point CP1, the first coil, the second coil and the third contact point CP3 can form a second circuit loop. It is worth noting that in this embodiment, the first circuit loop is operable in a near field communication (NFC) frequency band, and the second circuit loop is operable as a transmitter for power transmission or a receiver terminal for wireless charging.

Based on the structural design of the coil assembly 302, the wireless device can simultaneously perform wireless communication and wireless charging functions, and the wireless device can also be miniaturized. In addition, the connection manner of the first coil and the second coil can also be adjusted according to actual needs. For example, the first contact CP1 , the second contact CP2 and the third contact CP3 can be electrically connected to an external control circuit (such as a control chip). The external control circuit can control the first coil through the first contact point CP1 and the second contact point CP2, the second coil can be controlled through the second contact point CP2 and the third contact point CP3, or the second coil can be controlled through the first contact point CP1 and the second contact point The three-contact CP3 controls the first coil and the second coil connected in series.

Please refer to FIG. 18 to FIG. 20. FIG. 18 is a schematic top view of a coil assembly 402 of a wireless device according to another embodiment of the present disclosure, and FIG. 19 is a schematic diagram of a coil assembly 402 according to an embodiment of the present disclosure. A schematic diagram of the upper structure of the first plane 4021, and FIG. 20 is a schematic diagram of the lower structure of the coil component 402 on a second plane 4022 according to this embodiment of the present disclosure.

In this embodiment, the coil assembly 402 of the wireless device includes a first coil and a second coil, the first coil includes a first metal wire 404 disposed on the first plane 4021, and the second coil includes a second metal wire 406 , set on the second plane 4022 . As shown in FIG. 19 , the first coil further includes a plurality of first separation portions 408 disposed between two adjacent turns of the first metal wire 404 . As shown in FIG. 20 , the second coil further includes a plurality of second separation portions 410 disposed between two adjacent turns of the second metal wire 406 .

Wherein, as shown in FIG. 19 and FIG. 20 , the first metal wire 404 has a first inclined section 4041 , and the second metal wire 406 has a second inclined section 4061 . The first separation portion 408 can be electrically connected to the second metal wire 406 through a conduction component CA1 and the second inclined section 4061 . Wherein, the conducting component CA1 includes a plurality of metal connectors. Moreover, the second separation portion 410 can be electrically connected to the first metal wire 404 through another conducting element CA2 and the first inclined section 4041 . In addition, as shown in FIG. 18 , when viewed along the Z-axis direction, the first inclined section 4041 and the second inclined section 4061 overlap each other.

Based on the structural configuration of this embodiment, the coil component 402 does not need to additionally provide a lead-out line from the innermost side of the first coil or the second coil. In addition, the total length or area of the first separation part 408 is greater than that of the second separation part 410 , so the number of turns of the coil assembly 402 can be increased and the overall resistance value can be reduced.

The disclosure provides a wireless device including a coil unit. In some embodiments, the coil unit may include a first coil and a second coil, the first coil is connected in series with the second coil, and the first coil is connected to a first contact and a second contact, and The second coil is connected to the second contact and the third contact, that is, the second contact is connected between the first coil and the second coil.

Therefore, the first contact, the first coil and the second contact can form a first circuit loop, and the first contact, the first coil, the second coil and the third contact can form a second circuit loop. Wherein, the first circuit loop is operable in a near field communication (NFC) frequency band, and the second circuit loop is operable as a transmitting end or a receiving end of power transmission to perform the function of wireless charging. Therefore, the wireless device can perform the functions of wireless communication and wireless charging at the same time.

Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that those skilled in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the protection scope of the present disclosure is not limited to the process, machine, manufacture, material composition, device, method and steps in the specific embodiments described in the specification, and anyone with ordinary knowledge in the technical field can learn from the content of the present disclosure It is understood that the current or future developed process, machine, manufacture, material composition, device, method and step can be used according to the present disclosure as long as it can perform substantially the same function or obtain substantially the same result in the embodiments described herein. Therefore, the protection scope of the present disclosure includes the above-mentioned process, machine, manufacture, composition of matter, device, method and steps. In addition, each patent application scope constitutes an individual embodiment, and the protection scope of the present disclosure also includes combinations of various patent application scopes and embodiments.

100‧‧‧wireless device 102‧‧‧coil assembly 102A‧‧‧coil assembly 1021‧‧‧first plane 1022‧‧‧second plane 1023‧‧‧third plane 1024‧‧‧simulated metal wire 1025‧‧‧ Pseudo metal wire 1026‧‧‧metal block 103‧‧‧first terminal contact 1031‧‧‧extension wire 104‧‧‧adhesive layer 105‧‧‧second terminal contact 106‧‧‧magnetic plate 108‧‧ ‧substrate 110‧‧‧coil structure 111‧‧‧first metal wire 1111‧‧‧first end 1112‧‧‧second end 112‧‧‧second metal wire 1121‧‧‧first end 1122‧‧‧th Two ends 114‧‧‧connector 116‧‧‧innermost ring 118‧‧‧first intermediate ring 120‧‧‧second intermediate ring 1201‧‧‧left half 1202‧‧‧right half 120S‧‧‧th A slit 122‧‧‧outer circle 202‧‧‧coil assembly 202A‧‧‧coil assembly 2021‧‧‧first plane 2022‧‧‧second plane 302‧‧‧coil assembly 3021‧‧‧first plane 3022 ‧‧‧second plane 304‧‧‧first metal wire 3041‧‧‧first end 3043‧‧‧end 306‧‧second metal wire 3061‧‧‧end 3063‧‧‧second end 308‧ ‧‧third metal wire 3081‧‧‧first end 3083‧‧‧second end 310‧‧‧connecting wire 402‧‧‧coil assembly 4021‧‧‧first plane 4022‧‧‧second plane 404‧‧‧ The first metal wire 4041‧‧‧the first inclined section 406‧‧‧the second metal wire 4061‧‧‧the second inclined section 408‧‧‧the first separation part 410‧‧‧the second separation part CA1, CA2‧ ‧‧Conductive component CS‧‧‧bent section CP1‧‧‧first contact CP2‧‧‧second contact CP3‧‧‧third contact MC, MC1, MC2, MC3, MC5, MC6‧‧‧metal Connector SS‧‧‧straight line section W1, W2, WA, WB, WC, WX‧‧‧width X‧‧‧area

The present disclosure can be clearly understood through the following detailed descriptions and diagrams. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale and are used for illustration purposes only. In fact, the dimensions of the various features may be arbitrarily expanded or reduced for clarity of illustration. FIG. 1 is an exploded view of a wireless device according to an embodiment of the present disclosure. FIG. 2 is a schematic top view of a coil assembly according to an embodiment of the present disclosure. FIG. 3 is a schematic structural view of a coil assembly according to an embodiment of the present disclosure on a first plane. FIG. 4 is a schematic structural view of the coil assembly according to the embodiment of the present disclosure on a third plane. FIG. 5 is a schematic structural view of the coil assembly according to the embodiment of the present disclosure on a second plane. FIG. 6 is a schematic top view of a coil assembly according to another embodiment of the disclosure. Fig. 7 is a schematic cross-sectional view of line segment A-A' in Fig. 6 according to an embodiment of the present disclosure. FIG. 8 is an enlarged view of the region X in FIG. 6 according to an embodiment of the present disclosure. FIG. 9 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the disclosure. FIG. 10 is a schematic diagram of an upper structure of a coil assembly on a first plane according to an embodiment of the disclosure. FIG. 11 is a schematic diagram of the lower structure of the coil component in a second plane according to the embodiment of the present disclosure. FIG. 12 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the disclosure. FIG. 13 is a schematic diagram of the upper structure of the coil component on the first plane according to an embodiment of the present disclosure. FIG. 14 is a schematic diagram of the lower structure of the coil component in the second plane according to the embodiment of the present disclosure. FIG. 15 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the disclosure. FIG. 16 is a schematic diagram of an upper structure of a coil component on a first plane according to an embodiment of the disclosure. FIG. 17 is a schematic diagram of the lower structure of the coil component in a second plane according to the embodiment of the present disclosure. FIG. 18 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the disclosure. FIG. 19 is a schematic diagram of an upper structure of a coil component on a first plane according to an embodiment of the disclosure. FIG. 20 is a schematic diagram of the lower structure of the coil component in a second plane according to the embodiment of the present disclosure.

302‧‧‧Coil assembly

3021‧‧‧First Plane

304‧‧‧The first metal wire

306‧‧‧Second metal wire

308‧‧‧The third metal wire

CP1‧‧‧first contact

CP2‧‧‧Second contact

CP3‧‧‧The third contact

MC1, MC2‧‧‧Metal connectors

Claims (16)

A wireless device, comprising: a coil assembly, including: a first coil having a first metal wire and a second metal wire; a second coil configured to be connected in series with the first coil; a first contact, configured to be connected to a first end of the first coil; a second contact configured to be connected between the first coil and the second coil; and a third contact configured to be connected to the second coil A second end; wherein the first contact, the first coil and the second contact form a first circuit loop, and the first contact, the first and second coils and the third contact A second circuit loop is formed; wherein, the first metal wire forms a first helical structure, which has an end located inside the first helical structure, and the end of the first metal wire is connected by one or more A metal connector is electrically connected to one end of the second metal wire, and the end of the second metal wire is located inside a second helical structure formed by the second metal wire; wherein, the first contact , the second contact and the third contact are electrically connected to an external control circuit, so that the external control circuit controls the first coil through the first contact and the second contact, and through the first The second contact and the third contact control the second coil, or the first coil and the second coil connected in series are controlled by the first contact and the third contact. The wireless device as described in item 1 of the claimed claims, wherein the first circuit loop operates in a near field communication frequency band, and the second circuit loop operates as a transmitting end or a receiving end of power transmission. The wireless device as described in claim 2, wherein the second coil surrounds a part of the first coil. A wireless device, comprising: a first coil, including: a first metal wire, arranged on a first plane, having a first helical structure; and a second metal wire, arranged on a second plane, having a first Two helical structures, and the second metal wire is electrically connected to the first metal wire; wherein the first metal wire and the second metal wire extend continuously; wherein the wireless device further includes a connecting piece, which is arranged on a first metal wire. Three planes, and the connector is electrically connected to a first end of the first coil; wherein the first metal wire is connected in parallel with the second metal wire. The wireless device described in claim 4, wherein the third plane is located between the first plane and the second plane. The wireless device described in item 4 of the scope of the patent application further includes a plurality of metal connectors arranged around the connectors to electrically connect the first and second metal wires. The wireless device as described in item 4 of the scope of the patent application, which further includes a plurality of pseudo metal wires arranged on the first plane and adjacent to a first terminal contact and a second terminal contact, wherein these pseudo metal wires The metal wires are electrically independent from each other. The wireless device as described in item 7 of the scope of the patent application further includes a metal block disposed on the first plane, and the pseudo metal wires surround the metal block and are electrically independent from the metal block. The wireless device as described in item 4 of the scope of the patent application further includes: at least one electronic component disposed on the second plane; and a plurality of pseudo metal wires disposed on the first plane corresponding to the positions of the electronic components. The wireless device as described in claim 4 of the scope of the patent application, wherein the width of the innermost circle of the first helical structure is narrower than the width of the outermost circle of the first helical structure. The wireless device as described in item 10 of the scope of patent application, wherein the first helical structure has a middle ring disposed between the innermost ring and the outermost ring, wherein a first slit is formed on the middle ring, The first slit divides the middle circle into a left half and a right half, and the width of the left half or the right half is smaller than the width of the innermost circle of the first helical structure. The wireless device described in claim 11 of the patent application, wherein the width of each turn of the first helical structure gradually increases from the inside to the outside. The wireless device described in item 4 of the scope of the patent application, wherein the first metal wire includes a plurality of straight sections and a plurality of curved sections, and the width of each curved section is greater than the width of the connected straight section . The wireless device as described in claim 13, wherein the first metal wire has a plurality of slits formed on the curved sections respectively. The wireless device described in claim 4 of the scope of application, wherein the first metal wire and the second metal wire have opposite winding directions. A wireless device, comprising: a first coil, including: a first metal wire, arranged on a first plane, having a first helical structure; and a second metal wire, arranged on a second plane, having a first Two helical structures, and the second metal wire is electrically connected to the first metal wire; wherein the first metal wire and the second metal wire extend continuously; wherein the wireless device further includes: a first separation part, set between two adjacent turns of the first metal wire; and a second separation portion disposed between two adjacent turns of the second metal wire; wherein the first metal wire has a first inclined section, The second metal wire has a second inclined section, the first separation part is electrically connected to the second metal wire through a conduction element and the second inclined section, and the second separation part is connected to the second metal wire through another The conduction component and the first inclined section are electrically connected to the first metal wire.

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