TWI820052B - Wireless device - Google Patents

Abstract

A wireless device is provided and includes a first coil and at least one conductive assembly. The first coil includes a first metal wire and a second metal wire. The first metal wire is disposed on a first plane and has a first spiral structure. The second metal wire is disposed on a second plane and has a second spiral structure, and the second metal wire is electrically connected to the first metal wire. The conductive assembly has at least one metal connector. The conductive assembly is disposed on innermost turns of the first spiral structure and the second spiral structure.

Description

Wireless device

The present disclosure relates to a wireless device, and in particular to a wireless device having two layers of metal wires.

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

Generally speaking, a wireless charging device will include a magnetically conductive substrate carrying a coil. Among them, when the coil is energized and operated in a wireless charging mode or a wireless communication mode, the magnetic conductive substrate can make the magnetic lines of force emitted by the coil more concentrated to obtain better performance. However, 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 the various needs of users is a topic worthy of discussion and solution today.

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

The present disclosure provides a wireless device, including a first coil and at least one conductive component. The first coil includes a first metal conductor and a second metal conductor. The first metal conductor is disposed on a first plane and has a first spiral structure. The second metal conductor is disposed on a second plane, has a second spiral structure, and is electrically connected to the first metal conductor. The conductive component has at least one metal connecting piece, wherein the conductive component is disposed on the innermost ring of the first spiral structure and the second spiral structure.

According to some embodiments of the present disclosure, the wireless device further includes at least three conductive components disposed on the penultimate turn of the first spiral structure and the second spiral structure.

According to some embodiments of the present disclosure, the distances between the metal connectors in the same conductive component are substantially equal.

According to some embodiments of the present disclosure, the wireless device further includes a first connecting member separated from the second spiral structure.

According to some embodiments of the present disclosure, the first metal conductor further includes a separation conductor, and the separation conductor is separated from the first spiral structure.

According to some embodiments of the present disclosure, the separation conductor has a long strip structure, the innermost ring of the first spiral structure has an end section, and the extension direction of the end section is different from the extension direction of the separation conductor.

According to some embodiments of the present disclosure, the first spiral structure is coupled to the first connector through the second spiral structure and the separate wire in sequence.

According to some embodiments of the present disclosure, the length of the first connecting member is greater than the sum of the widths of each turn in the second spiral structure.

According to some embodiments of the present disclosure, the second metal conductor includes a plurality of straight sections and a plurality of curved sections, and the first connector cuts off part of the curved sections.

According to some embodiments of the present disclosure, when viewed from a direction perpendicular to the first plane, the first connecting member and the end of the first spiral structure form a hollow area.

According to some embodiments of the present disclosure, the wireless device further includes a first connecting member, and the first connecting member does not cut off a part of the second spiral structure.

According to some embodiments of the present disclosure, the first connecting member does not cut off the innermost ring of the second helical structure.

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

According to some embodiments of the present disclosure, the first spiral structure has a middle ring disposed between the innermost ring and the outermost ring, wherein a first slit is formed on the middle ring, and the first slit divides the middle ring 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 ring of the first spiral structure.

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

According to some embodiments of the present disclosure, the first spiral structure 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 straight section connected to it.

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

According to some embodiments of the present disclosure, the wireless device further includes an electrical connection portion connected to an end of the innermost ring of the first spiral structure.

According to some embodiments of the present disclosure, the wireless device further includes a first connecting member connected to the penultimate turn of the second spiral structure; and an electrical connection part connected to the penultimate turn of the second spiral structure.

According to some embodiments of the present disclosure, the wireless device further includes a first connecting member connected to the penultimate turn of the second spiral structure, and when viewed from a direction perpendicular to the first plane, the innermost turn of the first spiral structure It does not overlap with the penultimate turn of the second spiral structure.

According to some embodiments of the present disclosure, the wireless device further includes a second coil, and the second coil includes a third metal wire disposed on the first plane and surrounding the first metal wire; and a fourth metal wire disposed on the second planar and surrounding the second metal conductor. The first coil operates in a near field communication frequency band, and the second coil operates as a transmitting end or a receiving end of power transmission.

The present disclosure provides a wireless device including a coil unit. In some embodiments, the coil unit may include a first coil. The first coil may further include a first metal wire and a second metal wire. The second metal wire is electrically connected to the first metal wire through at least one conductive component. , and the conductive component can be arranged on the innermost ring of the first metal wire and the second metal wire, so that the current density of the coil unit can be more evenly distributed, so that the current is not easy to concentrate on specific parts and generate unnecessary heat energy, thereby improving the overall efficiency.

In addition, in some embodiments, the coil unit may further include a second coil, wherein the first coil is operable in a near field communication (NFC) frequency band, and the second coil is operable as a transmitter for power transmission or A receiving end to perform the wireless charging function. Therefore, the wireless device can perform wireless communication and wireless charging functions at the same time.

In order to make the purpose, features, and advantages of the present disclosure more obvious and understandable, embodiments are given below and explained in detail with the accompanying figures. The configuration of each component in the embodiment is for illustrative purposes and is not intended to limit the disclosure. In addition, the partial repetition of numbers in the figures in the embodiments is for simplifying the description and does not imply the correlation between different embodiments. Directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only for reference to the directions in the attached drawings. Accordingly, the directional terms used are intended to illustrate and not to limit the disclosure.

It is to be understood that elements specifically described or illustrated may exist in a variety of forms known to those skilled in the art. In addition, when a layer is "on" other layers or substrates, it may mean "directly" on other layers or substrates, or it may mean that a layer is on other layers or substrates, or it may mean that it is sandwiched 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 figures. It will be understood that if the illustrated device was turned upside down, elements described as being on the "lower" side would become elements described as being on the "higher" side.

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

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 unit 102 , an adhesive layer 104 , and a magnetic conductive plate 106 . In this embodiment, the coil unit 102 is disposed on the magnetic conductive plate 106, and the coil unit 102 can be connected to the magnetic conductive plate 106 using the adhesive layer 104. The adhesive layer 104 can be tape or any other material that can be used for connection.

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

As shown in FIG. 1 , the coil unit 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. Any substrate that can be used to form the coil structure 110 is within the scope of this disclosure. Furthermore, the coil unit 102 can be used as a charging coil to wirelessly charge an external electronic device (such as a tablet computer or a smart phone).

For example, the coil structure 110 of the coil unit 102 can be a resonant charging coil based on the Alliance for Wireless Power (A4WP) standard, but is not limited thereto. In addition, the coil structure 110 can be based on a Wireless Power Consortium (WPC) standard, such as the Qi standard, to serve as an inductive charging coil. Therefore, this implementation mode can enable the wireless device 100 to support different forms of charging methods at the same time, thereby increasing the applicable range. For example, at short distances (for example, less than 1cm), inductive operation is used; while at long distances, resonance operation is used.

Next, please refer to Figures 2 to 4. Figure 2 is a top view of the coil unit 102 according to an embodiment of the present disclosure. Figure 3 is a first plane 1021 of the coil unit 102 according to an embodiment of the present disclosure. , and FIG. 4 is a schematic diagram of the lower structure of the coil unit 102 in a second plane 1022 according to this embodiment of the present disclosure. It should be noted that the coil structure in Figure 4 should be located below the second plane 1022, but for the sake of clarity, the coil structure in Figure 4 is still represented by a solid line.

As shown in FIGS. 3 and 4 , the coil structure 110 (first coil) of the coil unit 102 may include a first metal wire 111 and a second metal wire 112 . The first metal wire 111 is disposed on the first plane. 1021, and the second metal wire 112 is disposed on the second plane 1022. As shown in FIG. 3 , the coil unit 102 has 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 FIGS. 3 and 4 , the first metal conductor 111 forms a first spiral structure, and the second metal conductor 112 forms a second spiral structure, substantially corresponding to the shape and width of the first spiral structure. . The first metal conductor 111 is configured to be connected to the first terminal contact 103, the second metal conductor 112 is configured to be electrically connected to the second terminal contact 105, and the second metal conductor 112 is configured to be electrically connected to the second terminal contact 103. A metal wire 111.

Furthermore, the coil unit 102 may further include one or more conductive components, each conductive component including a plurality of metal connectors MC (also called vias, via) configured to penetrate the substrate 108 to connect the first metal wire 111 and a second metal wire 112 . For example, as shown in Figures 2 to 4, the coil unit 102 has a conductive component CA1 and a conductive component CA2, which are disposed in the innermost circles of the first and second spiral structures and configured to connect the first metal wire. 111 and the second metal wire 112. By arranging multiple metal connectors MC, the current density of the coil unit 102 can be distributed more evenly, so that the current is less likely to be concentrated in specific parts and generate unnecessary heat energy, thereby improving the overall efficiency.

As shown in FIG. 3 , the first metal conductor 111 further includes a separation conductor 113 , and the separation conductor 113 is located in the first spiral structure of the first metal conductor 111 and is separated from the first spiral structure. Furthermore, as shown in FIG. 4 , the second metal wire 112 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 Figure 3, 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. Through such a structural design, the area of the coil unit 102 can be reduced to achieve the purpose of miniaturization of the wireless device 100 .

It is worth noting that, as shown in Figures 2 to 4, the coil unit 102 further includes a first connecting member 114. The first connecting member 114 is separated from the aforementioned second spiral structure, and the first spiral structure is sequentially It is coupled to the first connector 114 via the conductive component CA1, the second spiral structure, the separation wire 113, and the conductive component CA2 (the order of coupling may also be reversed).

Furthermore, as shown in Figure 4, the first connecting member 114 has a length L1, and the sum of the widths of each turn in the second spiral structure is WT (along the extending direction of the first connecting member 114), where the length L1 is larger than the total width WT, so that the coil structure 110 is less likely to cause problems (such as short circuit) due to manufacturing errors. In addition, in this embodiment, as shown in FIG. 4 , the first connecting member 114 extends from the inside of the second spiral structure to the outside of the second spiral structure and cuts off part of the curved sections CS.

In addition, please refer to Figures 2 and 5. Figure 5 is a schematic cross-sectional view of the line segment A-A' in Figure 2 according to an embodiment of the present disclosure. In this embodiment, as shown in FIG. 2 , the coil unit 102 may further include a plurality of conductive components disposed on both sides of the first connecting member 114 . As shown in Figures 2 and 5, the conductive component CA3 and the conductive component CA4 can connect part of the first spiral structure of the first metal conductor 111 and the second spiral structure of the second metal conductor 112 in parallel, so that the coil can be reduced. The effect of the overall impedance of the unit 102, and the number of turns of the coil structure 110 of the coil unit 102 can also be increased.

Furthermore, as shown in FIG. 2 , each conductive component includes a plurality of metal connectors MC arranged in an array along the direction of the first metal conductor 111 . For example, the metal connectors MC in the conductive component CA3 are arranged in pairs along the extension direction of the first metal wire 111 .

Next, please refer to Figure 6, which is an enlarged view of the area X in Figure 2 according to an embodiment of the present disclosure. As shown in FIG. 6 , the first spiral structure has an innermost ring 116 , a first middle ring 118 , a second middle ring 120 and an outermost ring 122 . 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 WX of the outermost ring 122 . In various embodiments of the present disclosure, the widths of different turns in the first metal wire 111 can be changed accordingly according to the strength of the magnetic field. For example, using a narrower width when corresponding to a stronger magnetic field results in a higher resistance value, thus reducing losses due to eddy currents.

In this embodiment, a plurality of slits may be formed on the first spiral structure of the first metal wire 111, respectively formed on the curved section CS. Specifically, as shown in Figure 6, the first intermediate ring 118 and the second intermediate ring 120 are disposed 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 circle 120 into a left half 1201 and a right half 1202. The left half 1201 and the right half 1202 each have a width WC, and the width WC is smaller than the width WA of the innermost ring 116 of the first spiral structure.

Furthermore, in this embodiment, the width of each turn of the first spiral structure may gradually increase from the inside to the 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 also be made more even.

In addition, in some embodiments of the present disclosure, as shown in FIGS. 2 and 3 , in order to increase the overall strength of the coil unit 102 , the coil unit 102 may further include a plurality of pseudo-metal wires disposed on the first plane 1021 . In this embodiment, the coil unit 102 includes a plurality of pseudo-metal wires 1023 and pseudo-metal wires 1024 , and the pseudo-metal wires 1024 are adjacent to the first terminal contact 103 and the second terminal contact 105 . The pseudo metal wires 1023 and 1024 are electrically independent of the first metal wire 111 and the second metal wire 112 , and the plurality of pseudo metal wires 1023 and the plurality of pseudo metal wires 1024 are electrically independent of each other.

By providing the pseudo-metal wire 1023 and the pseudo-metal wire 1024, the local hardness of the substrate 108 can be increased, and the pseudo-metal wire 1023 and the pseudo-metal wire 1024 can be used to assist in positioning the substrate 108 to improve positioning accuracy and ease of assembly. . In this embodiment, the pseudo metal wires 1023 and the pseudo metal wires 1024 are implemented in a linear shape, but are not limited thereto. For example, they may also be implemented in a circular or rectangular shape in other embodiments.

In FIG. 3 , the coil unit 102 may further include a metal block 1025 disposed on the first plane 1021 to further increase the overall strength of the coil unit 102 . Furthermore, a plurality of pseudo-metal wires 1024 surround the metal block 1025 and are electrically independent from the metal block 1025 .

Furthermore, in the embodiment of FIG. 4 of the present disclosure, the wireless device 100 may further include at least one electronic component 50 disposed on the second plane 1022. The electronic component 50 is configured to be electrically connected to two electrical contacts. EC. The electronic component 50 is disposed at a position corresponding to the metal block 1025 disposed on the first plane 1021 and a portion of the pseudo-metal wire 1024 . Therefore, the electrical contact EC soldered to the electronic component 50 will not be easily damaged when subjected to impact, thereby improving the reliability of the wireless device 100 .

Please refer to FIG. 7 , which is a schematic diagram of a coil unit 102A on the second plane 1022 according to another embodiment of the present disclosure. The coil unit 102A is similar to the coil unit 102 in FIG. 4 . The difference is that the coil unit 102A in this embodiment includes at least three conductive components disposed on the penultimate turns of the first and second spiral structures and configured to be electrically connected to The first helical structure and the second helical structure. (The first helical structure is the same as that in Figure 3, so it is omitted here).

Specifically, in this embodiment, as shown in FIG. 7 , the coil unit 102A includes two conductive components CA5, two conductive components CA6, and two conductive components CA7. Among them, the conductive component CA5 disposed in the innermost ring may include five metal connectors MC, and the distances between these metal connectors MC are substantially equal. In addition, the conductive components CA5, CA6 and CA7 are arranged at equal distances along the extension direction of the second metal wire 112, so the structural strength of the coil unit 102A can be improved and the current density can be made more uniform.

Through the structural design of this embodiment, the structural strength of the coil unit 102A can be increased, and the current density can also be made more uniform.

Please refer to Figures 8 to 10. Figure 8 is a top view of a coil unit 202 of a wireless device according to another embodiment of the present disclosure. Figure 9 is a schematic diagram of a coil unit 202 of a wireless device according to another embodiment of the present disclosure. A schematic diagram of the upper structure of a plane 2021, and FIG. 10 is a schematic diagram of the lower structure of the coil unit 202 according to this embodiment of the present disclosure. In this embodiment, the coil unit 202 includes a first metal wire 211 and a second metal wire 212, which are respectively disposed on the first plane 2021 and the second plane 2022, and the first metal wire 211 and the second metal wire 212 are respectively A first helical structure and a second helical structure are formed.

As shown in FIG. 10 , the coil unit 202 further includes a first connecting member 214 separated from the second spiral structure. Furthermore, as shown in FIG. 8 , the first metal conductor 211 further includes a separate conductor 224 configured to connect the first connector 214 and the second metal conductor 212 through the metal connector MC. In this embodiment, as shown in FIG. 9 , the separation wire 224 has a long strip structure. The innermost ring of the first spiral structure has an end section 2111 , and the extension direction of the end section 2111 is different from that of the separation wire 224 . extension direction. In this embodiment, the extension direction of the end section 2111 is substantially perpendicular to the extension direction of the separation wire 224, but it is not limited to this embodiment.

Through the design of the end section 2111 and the separated wire 224 extending in different directions, the contact area between the coil unit 202 and other components can be increased, thereby improving the heat dissipation effect. In addition, as shown in FIG. 10 , the second metal wire 212 can also be provided with a non-parallel section 2121 to further improve the heat dissipation effect. Furthermore, the working efficiency of the coils can be optimized by adjusting the gap size between the coils according to the corresponding electromagnetic field intensity.

Please refer to Figures 11 to 13. Figure 11 is a schematic top view of a coil unit 202A of a wireless device according to another embodiment of the present disclosure. Figure 12 is a schematic diagram of the coil unit 202A of the first embodiment of the present disclosure. A schematic diagram of the upper structure of the plane 2021, and Figure 13 is a schematic diagram of the lower structure of the coil unit 202A on the second plane 2022 according to this embodiment of the present disclosure.

The coil unit 202A of this embodiment is similar to the coil unit 202 . The difference is that in this embodiment, when viewed from a direction perpendicular to the first plane 2021 , as shown in FIG. 11 , the first connecting member 214A and the first metal wire One end 2111 of the first helical structure 211 forms a hollow area HA. Based on the structural design of this embodiment, the induction efficiency and heat dissipation efficiency of the coil unit 202A can be improved.

Please refer to Figures 14 to 16. Figure 14 is a top view of a coil unit 202B of a wireless device according to another embodiment of the present disclosure. Figure 15 is a first view of the coil unit 202B of a wireless device according to another embodiment of the present disclosure. 16 is a schematic diagram of the lower structure of the coil unit 202B in the second plane 2022 according to this embodiment of the present disclosure.

The coil unit 202B of this embodiment is similar to the aforementioned coil unit 202A. The difference is that in this embodiment, the coil unit 202B further includes an electrical connection part 225 connected to the innermost ring of the first spiral structure of the first metal conductor 211 end. Based on the structural design of this embodiment, the coil unit 202B can be directly electrically connected to an external circuit through the electrical connection portion 225 to increase the convenience of testing the coil unit 202B.

Please refer to Figures 17 to 19. Figure 17 is a top view of a coil unit 202C of a wireless device according to another embodiment of the present disclosure. Figure 18 is a first view of the coil unit 202C according to an embodiment of the present disclosure. A schematic diagram of the upper structure of the plane 2021, and FIG. 19 is a schematic diagram of the lower structure of the coil unit 202C on the second plane 2022 according to this embodiment of the present disclosure.

The coil unit 202C of this embodiment is similar to the aforementioned coil unit 202B. The difference is that in this embodiment, the coil unit 202C has an electrical connection part 226 connected to the penultimate turn of the second spiral structure of the second metal wire 212 . In addition, the coil unit 202C further includes a first connecting member 214C, and the first connecting member 214C does not cut off a part of the second spiral structure. Specifically, the first connecting member 214C does not cut off the innermost turn (the penultimate turn) of the second helical structure, and the first connecting member 214C is connected to the penultimate turn of the second helical structure.

Based on the structural design of this embodiment, the coil unit 202C can be directly electrically connected to an external circuit, such as a testing device, through the electrical connection portion 226 to increase the convenience of testing the coil unit 202C. In addition, the plurality of coil units 202C can also be connected to a control chip through respective electrical connection portions 226, and the control chip can control the connection mode between the plurality of coil units 202C, such as being connected in series or in parallel.

Please refer to Figures 20 to 22. Figure 20 is a top view of a coil unit 202D of a wireless device according to another embodiment of the present disclosure. Figure 21 is a first view of the coil unit 202D of a wireless device according to another embodiment of the present disclosure. A schematic diagram of the upper structure of the plane 2021, and Figure 22 is a schematic diagram of the lower structure of the coil unit 202D on the second plane 2022 according to this embodiment of the present disclosure.

The coil unit 202D of this embodiment is similar to the aforementioned coil unit 202C, in which a first connecting member 214D of the coil unit 202D is connected to the penultimate turn 2122 of the second spiral structure of the second metal wire 212 (as shown in Figure 22 shown). It is worth noting that the difference between this embodiment and the previous embodiment is that, as shown in FIG. 20 , when viewed from a direction perpendicular to the first plane 2021 , the innermost part of the first spiral structure of the first metal conductor 211 The loop 2112 does not partially overlap with the penultimate loop 2122 of the second spiral structure.

In this embodiment, an innermost ring 2123 of the second metal wire 212 and the innermost ring 2112 of the first metal wire 211 are connected in series, so the overall resistance of the coil unit 202D can be reduced, thereby reducing the eddy current. the losses caused.

Please refer to Figures 23 to 25. Figure 23 is a schematic top view of a coil unit 302 of a wireless device according to another embodiment of the present disclosure. Figure 24 is a schematic diagram of a coil unit 302 of a wireless device according to another embodiment of the present disclosure. A schematic diagram of the upper structure of a plane 3021, and Figure 25 is a schematic diagram of the lower structure of the coil unit 302 according to this embodiment of the present disclosure.

In this embodiment, the coil unit 302 of the wireless device includes a first coil and a second coil. The first coil includes a first metal wire 304 and a second metal wire 306, which are respectively disposed on the first plane 3021 and the second metal wire. Two planes 3022. In addition, the second coil includes a third metal conductor 308 and a fourth metal conductor 310, wherein the third metal conductor 308 is disposed on the first plane 3021 and surrounds the first metal conductor 304, and the fourth metal conductor 310 is disposed on the first plane 3021. The second plane 3022 surrounds the second metal wire 306 .

In this embodiment, the first metal wire 304 can be electrically connected to the second metal wire 306 through a plurality of conductive components CA, and the second metal wire 306 can be electrically connected to an electrical circuit through two conductive components CA. electrical contact EC1 and an electrical contact EC2, so that the first coil is electrically connected to an external circuit through the electrical contact EC1 and the electrical contact EC2. The third metal wire 308 can be electrically connected to the fourth metal wire 310 through a plurality of conductive components CA. Furthermore, the third metal wire 308 is electrically connected to an electrical contact EC3, and the fourth metal wire 310 is electrically connected to an electrical contact EC4 through the conductive component CA, so that the second coil is electrically connected. to an external circuit.

It is worth noting that in this embodiment, the first coil is operable in a near field communication (NFC) frequency band, and the second coil is operable as a transmitter or a receiver of power transmission, to perform wireless charging function.

Based on the structural design of the coil unit 302, the wireless device can perform wireless communication and wireless charging functions at the same time, and the wireless device can also be miniaturized.

Please refer to Figures 26 to 28. Figure 26 is a top view of a coil unit 302A of a wireless device according to another embodiment of the present disclosure. Figure 27 is a first view of the coil unit 302A of a wireless device according to another embodiment of the present disclosure. A schematic diagram of the upper structure of the plane 3021, and Figure 28 is a schematic diagram of the lower structure of the coil unit 302A on the second plane 3022 according to this embodiment of the disclosure.

Similar to the coil unit 302 , in this embodiment, the coil unit 302A of the wireless device includes a first coil and a second coil. The first coil includes a first metal wire 312 and is disposed on the first plane 3021 . The second coil includes a second metal wire 314 disposed on the first plane 3021 and surrounding the first metal wire 312, and the second metal wire 314 is electrically connected to the electrical contact EC1 and the electrical contact EC2. The difference between the coil unit 302A and the coil unit 302 is that the coil unit 302A includes a plurality of connecting wires 316 disposed on the second plane 3022 . In this embodiment, two connecting wires 316 are configured to connect the first metal wire 312 to the two electrical contacts EC, and the other three connecting wires 316 are configured to connect to the second metal wire 314 or the first metal wire. Different turns of wire in 312.

Based on such a structural configuration, the wire layout of the coil unit 302A on the second plane 3022 can be simplified.

The present disclosure provides a wireless device including a coil unit. In some embodiments, the coil unit may include a first coil. The first coil may further include a first metal wire and a second metal wire. The second metal wire is electrically connected to the first metal wire through at least one conductive component. , and the conductive component can be arranged on the innermost ring of the first metal wire and the second metal wire, so that the current density of the coil unit can be more evenly distributed, so that the current is not easy to concentrate on specific parts and generate unnecessary heat energy, thereby improving the overall efficiency.

In addition, in some embodiments, the coil unit may further include a second coil, wherein the first coil is operable in a near field communication (NFC) frequency band, and the second coil is operable as a transmitter for power transmission or A receiving end to perform the wireless charging function. Therefore, the wireless device can perform wireless communication and wireless charging functions at the same time.

Although the embodiments and their advantages of the present disclosure have been disclosed above, it should be understood that anyone with ordinary skill 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 processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Anyone with ordinary knowledge in the relevant technical field can learn from the disclosure It is understood that processes, machines, manufacturing, material compositions, devices, methods and steps currently or developed in the future can be used according to the present disclosure as long as they can perform substantially the same functions or obtain substantially the same results in the embodiments described herein. Therefore, the protection scope of the present disclosure includes the above-mentioned processes, machines, manufacturing, material compositions, devices, methods and steps. In addition, each claimed patent scope constitutes an individual embodiment, and the protection scope of the present disclosure also includes the combination of each claimed patent scope and embodiments.

50‧‧‧Electronic component 100‧‧‧Wireless device 102‧‧‧Coil unit 102A‧‧‧Coil unit 1021‧‧‧First plane 1022‧‧‧Second plane 1023‧‧‧imitating metal wire 1024‧‧‧imitating Metal wire 1025‧‧‧Metal block 103‧‧‧First terminal contact 104‧‧‧Adhesive layer 105‧‧‧Second terminal contact 106‧‧‧Magnetic plate 108‧‧‧Substrate 110‧‧‧Coil Structure 111‧‧‧First metal conductor 112‧‧‧Second metal conductor 113‧‧‧Separate conductor 114‧‧‧First connecting piece 116‧‧‧Innermost ring 118‧‧‧First middle ring 120‧‧‧ Second middle ring 1201‧‧‧Left half 1202‧‧‧Right half 120S‧‧‧First slit 122‧‧‧Outermost ring 202‧‧‧Coil unit 2021‧‧‧First plane 2022‧‧‧ Second plane 202A‧‧‧coil unit 202B‧‧‧coil unit 202C‧‧‧coil unit 202D‧‧‧coil unit 211‧‧‧first metal wire 2111‧‧‧end section 2112‧‧‧innermost ring 212‧ ‧‧Second metal wire 2121‧‧‧Non-parallel section 2122‧‧‧Penultimate circle 214‧‧‧First connecting piece 214A‧‧‧First connecting piece 214C‧‧‧First connecting piece 224‧‧‧ Separate wire 225‧‧‧Electrical connection part 226‧‧‧Electrical connection part 302‧‧‧Coil unit 302A‧‧‧Coil unit 3021‧‧‧First plane 3022‧‧‧Second plane 304‧‧‧First Metal wire 306‧‧‧Second metal wire 308‧‧‧Third metal wire 310‧‧‧Fourth metal wire 312‧‧‧First metal wire 314‧‧‧Second metal wire 316‧‧‧Connecting wire 402‧ ‧‧Coil unit 4021‧‧‧First plane 4022‧‧‧Second plane 404‧‧‧First metal wire 4041‧‧‧First inclined section 406‧‧‧Second metal wire 4061‧‧‧Second tilt Section 408‧‧‧First separation part 410‧‧‧Second separation part CA1, CA2, CA3, CA4, CA5, CA6, CA7‧‧‧Conduction component CS‧‧‧Bent sections EC, EC1, EC2, EC3 , EC4‧‧‧Electrical contact L1‧‧‧Length MC‧‧‧Metal connector SS‧‧‧Linear section WT‧‧‧Sum of width W1‧‧‧Width W2, WA, WB, WC, WX‧‧ ‧Width

This disclosure can be clearly understood through the following detailed description and accompanying illustrations. It is emphasized that, in accordance with 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 exaggerated or reduced for clarity of illustration. Figure 1 is an exploded view of a wireless device according to an embodiment of the present disclosure. Figure 2 is a schematic top view of a coil unit according to an embodiment of the present disclosure. Figure 3 is a schematic diagram of the upper structure of a coil unit in a first plane according to an embodiment of the present disclosure. FIG. 4 is a schematic diagram of the lower structure of the coil unit in a second plane according to this embodiment of the present disclosure. Figure 5 is a schematic cross-sectional view of line segment A-A' in Figure 2 according to an embodiment of the present disclosure. FIG. 6 is an enlarged view of the area X in FIG. 2 according to an embodiment of the present disclosure. FIG. 7 is a schematic view of a coil unit in a second plane according to another embodiment of the present disclosure. FIG. 8 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. Figure 9 is a schematic diagram of the upper structure of a coil unit in a first plane according to an embodiment of the present disclosure. FIG. 10 is a schematic diagram of the lower structure of the coil unit in a second plane according to this embodiment of the present disclosure. FIG. 11 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. FIG. 12 is a schematic diagram of the superstructure of the coil unit on the first plane according to the embodiment of the present disclosure. FIG. 13 is a schematic diagram of the lower structure of the coil unit in the second plane according to this embodiment of the present disclosure. FIG. 14 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. Figure 15 is a schematic diagram of the superstructure of the coil unit on the first plane according to the embodiment of the present disclosure. FIG. 16 is a schematic diagram of the lower structure of the coil unit in the second plane according to this embodiment of the present disclosure. Figure 17 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. Figure 18 is a schematic diagram of the superstructure of the coil unit on the first plane according to the embodiment of the present disclosure. FIG. 19 is a schematic diagram of the lower structure of the coil unit in the second plane according to this embodiment of the present disclosure. Figure 20 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. Figure 21 is a schematic diagram of the superstructure of the coil unit on the first plane according to the embodiment of the present disclosure. FIG. 22 is a schematic diagram of the lower structure of the coil unit in the second plane according to this embodiment of the present disclosure. Figure 23 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. Figure 24 is a schematic diagram of the upper structure of a coil unit in a first plane according to an embodiment of the present disclosure. Figure 25 is a schematic diagram of the lower structure of the coil unit in a second plane according to this embodiment of the present disclosure. Figure 26 is a schematic top view of a coil unit of a wireless device according to another embodiment of the present disclosure. Figure 27 is a schematic diagram of the upper structure of the coil unit on the first plane according to the embodiment of the present disclosure. Figure 28 is a schematic diagram of the lower structure of the coil unit in the second plane according to this embodiment of the present disclosure.

100‧‧‧Wireless devices

102‧‧‧Coil unit

104‧‧‧Adhesive layer

106‧‧‧Magnetic conductive plate

108‧‧‧Substrate

110‧‧‧Coil structure

Claims (20)

A wireless device includes: a first coil, including: a first metal conductor, disposed on a first plane, having a first spiral structure; and a second metal conductor, disposed on a second plane, having a first spiral structure. Two helical structures are electrically connected to the first metal conductor; and at least one conductive component has at least one metal connector, wherein the conductive component is disposed on the innermost ring of the first helical structure and the second helical structure; wherein The wireless device further includes a first connecting member separated from the second spiral structure. The wireless device described in claim 1 of the patent application further includes at least three conductive components disposed on the first spiral structure and the penultimate turn of the second spiral structure. In the wireless device described in Item 2 of the patent application, the distances between the metal connectors in the same conductive component are substantially equal. As in the wireless device described in claim 1 of the patent application, the first metal conductor further includes a separate conductor, and the separate conductor is separated from the first spiral structure. The wireless device as described in item 4 of the patent application, wherein the separate conductor has a long strip structure, the innermost ring of the first spiral structure has an end section, and the extension direction of the end section is different from that of the separate conductor the direction of extension. As in the wireless device described in claim 4 of the patent application, the first spiral structure is coupled to the first connector through the second spiral structure and the separate wire in sequence. As in the wireless device described in claim 1 of the patent application, the length of the first connecting member is greater than the sum of the widths of each turn in the second spiral structure. As in the wireless device described in claim 1 of the patent application, the second metal conductor includes a plurality of straight sections and a plurality of curved sections, and the first connecting member cuts off part of the curved sections. As in the wireless device described in Item 1 of the patent application, when viewed from a direction perpendicular to the first plane, the first connecting member and the end of the first spiral structure form a hollow area. The wireless device as described in claim 1 of the patent application further includes a first connecting member, and the first connecting member does not cut off a part of the second spiral structure. As in the wireless device described in claim 10 of the patent application, the first connecting member does not cut off the innermost ring of the second spiral structure. As in the wireless device described in claim 1 of the patent application, the width of the innermost circle of the first spiral structure is narrower than the width of the outermost circle of the first spiral structure. As claimed in claim 12 of the patent application, the first spiral structure has an intermediate ring disposed between the innermost ring and the outermost ring, and a first slit is formed on the middle ring. , the first slit divides the middle ring 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 ring of the first spiral structure. As in the wireless device described in claim 13 of the patent application, the width of each circle of the first spiral structure gradually increases from the inside to the outside. As in the wireless device described in claim 1 of the patent application, the first spiral structure 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 straight section connected to it. As in the wireless device described in claim 15 of the patent application, the first metal wire has a plurality of slits respectively formed on the curved sections. The wireless device described in item 1 of the patent application further includes an electrical connection part connected to the end of the innermost circle of the first spiral structure. The wireless device as described in item 1 of the patent application further includes a second coil, and the second coil includes: a third metal wire disposed on the first plane and surrounding the first metal wire; and a third metal wire. Four metal wires are arranged on the second plane and surround the second metal wire; wherein the first coil operates in a near field communication frequency band, and the second coil operates as a transmitting end or a receiving end of power transmission. A wireless device includes: a first coil, including: a first metal conductor, disposed on a first plane, having a first spiral structure; and a second metal conductor, disposed on a second plane, having a first spiral structure. A double helix structure and electrically connected to the first metal wire; and At least one conductive component has at least one metal connector, wherein the conductive component is disposed on the innermost ring of the first spiral structure and the second spiral structure; wherein the wireless device further includes a first connector connected to the third spiral structure. The penultimate turn of the two helical structure, and when viewed from a direction perpendicular to the first plane, the innermost turn of the first helical structure does not partially overlap with the penultimate turn of the second helical structure. A wireless device includes: a first coil, including: a first metal conductor, disposed on a first plane, having a first spiral structure; and a second metal conductor, disposed on a second plane, having a first spiral structure. Two helical structures are electrically connected to the first metal conductor; and at least one conductive component has at least one metal connector, wherein the conductive component is disposed on the innermost ring of the first helical structure and the second helical structure; wherein The wireless device further includes: a first connecting member connected to the penultimate turn of the second spiral structure; and an electrical connection part connected to the penultimate turn of the second spiral structure.