Wireless charging and communication board and wireless charging and communication device
Provided are a wireless charging and communication board, and a wireless charging and communication device, the wireless charging and communication board including: a soft magnetic layer; a polymeric material layer arranged on one surface and the other surface of the soft magnetic layer and extending longer than an exposed portion of the soft magnetic layer; and a coil pattern arranged on the polymeric material layer.
1. A wireless charging and communication board, comprising:
a plurality of soft magnetic layers comprising a first soft magnetic layer and a second soft magnetic layer;
a first polymeric material layer arranged on a first surface of the plurality of soft magnetic layers;
a second polymeric material layer arranged on a second surface of the plurality of soft magnetic layers opposed to the first surface; and
a coil pattern arranged on the second polymeric material layer,
wherein the plurality of soft magnetic layers are positioned between the first polymeric material layer and the second polymeric material layer,
wherein the first polymeric material layer includes a first extending portion extending longer than the plurality of soft magnetic layers,
wherein the second polymeric material layer includes a second extending portion extending longer than the plurality of soft magnetic layers,
wherein the first extending portion and the second extending portion are connected to each other,
wherein at least one of the first soft magnetic layer or the second soft magnetic layer is made with one or more of an amorphous alloy, a crystalline alloy, an amorphous alloy ribbon, a nanocrystalline ribbon, or a silicon steel plate.
2. The wireless charging and communication board of claim 1 , wherein a distance between the first extending portion and the second extending portion becomes closer to the soft magnetic layer as the plurality soft magnetic layers become farther apart.
3. The wireless charging and communication board of claim 2 , wherein a length (l) of the first extending portion or the second extending portion and a thickness (h) of the plurality of soft magnetic layers have a relation of the following equation, wherein A represents a constant of 0.6 to 10:
l=A×h [equation].
4. The wireless charging and communication board of claim 1 , wherein at least one of the first polymeric material layer or the second polymeric material layer contains one or more of polyethylene, polyacrylic, polyimide, polyamide, or polyurethane.
5. The wireless charging and communication board of claim 1 , further comprising an adhesive layer that adheres the first polymeric material layer and the second polymeric material layer to the plurality of soft magnetic layers.
6. The wireless charging and communication board of claim 1 , wherein an air gap is further formed between the plurality of soft magnetic layers, the first extending portion, and the second extending portion.
7. The wireless charging and communication board of claim 1 , further comprising a lead frame connected to the coil pattern,
wherein the first polymeric material layer and the second polymeric material layer are arranged to surround the lead frame.
8. The wireless charging and communication board of claim 1 , wherein the first polymeric material layer and the first extending portion are made with a same material.
9. The wireless charging and communication board of claim 1 , wherein the second soft magnetic layer is arranged on the first soft magnetic layer.
10. The wireless charging and communication board of claim 1 , wherein the coil pattern includes a first coil pattern and a second coil pattern which arranged to surround a side of the first coil pattern,
wherein the first coil pattern includes a wireless charging antenna, and the second coil pattern includes a near field communication antenna.
11. The wireless charging and communication board of claim 1 , wherein the first extending portion and the second extending portion contact each other.
12. The wireless charging and communication board of claim 1 , further comprising an adhesive layer positioned between the first extending portion and the second extending portion,
wherein the first extending portion adheres to the second extending portion.
13. A portable terminal, comprising:
a housing;
a plurality of soft magnetic layers arranged in the housing, and comprising a first soft magnetic layer and a second magnetic layer;
a first polymeric material layer arranged on a first surface of the plurality of soft magnetic layers;
a second polymeric material layer arranged on a second surface of the plurality of soft magnetic layers opposed to the first surface; and
a coil pattern arranged on the second polymeric material layer,
wherein the plurality of soft magnetic layers are disposed between the first polymeric material layer and the second polymeric material layer,
wherein the first polymeric material layer comprises a first extending portion extending longer than the plurality of soft magnetic layers,
wherein the second polymeric material layer comprises a second extending portion extending longer than the plurality of soft magnetic layers, and
wherein the first extending portion and the second extending portion are connected to each other, and
wherein at least one of the first soft magnetic layer or the second soft magnetic layer is made with one or more of an amorphous alloy, a crystalline alloy, an amorphous alloy ribbon, a nanocrystalline ribbon, or a silicon steel plate.
14. The portable terminal of claim 13 , wherein a distance between the first extending portion and the second extending portion becomes closer as the plurality of soft magnetic layers becomes farther apart.
15. The portable terminal of claim 14 , wherein a length (l) of the first extending portion or the second extending portion and a thickness (h) of the plurality of soft magnetic layers have a relation of the following equation, wherein A represents a constant of 0.6 to 10:
l=A×h [equation].
16. The portable terminal of claim 13 , further comprising a lead frame connected to the coil pattern,
wherein the first polymeric material layer and the second polymeric material layer are arranged to surround the lead frame.
17. The portable terminal of claim 13 , wherein the first polymeric material layer and the first extending portion are made of a same material.
18. The portable terminal of claim 13 , further comprising an adhesive layer to adhere the first polymeric material layer and the second polymeric material layer to the plurality of soft magnetic layers.
19. The portable terminal of claim 13 , wherein the second soft magnetic layer is provided on the first soft magnetic layer.
20. The portable terminal of claim 13 , wherein the coil pattern includes a first coil pattern and a second coil pattern which arranged to surround a side of the first coil pattern,
wherein the first coil pattern includes a wireless charging antenna, and the second coil pattern includes a near field communication antenna.
21. The portable terminal of claim 13 , wherein the first extending portion and the second extending portion contact each other.
22. The portable terminal of claim 13 , further comprising an adhesive layer positioned between the first extending portion and the second extending portion,
wherein the first extending portion adheres to the second extending portion.