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 board provided for wireless charging and communication, comprising:
a first polymeric film;
a first adhesive layer provided on the first polymeric film;
a plurality of soft magnetic layers provided on the first adhesive layer;
a second polymeric film provided on the plurality of soft magnetic layers; and
a coil pattern provided on one surface of one of the first polymeric film and the second polymeric film and including a wireless charging coil and a near field communication coil,
wherein:
the plurality of soft magnetic layers includes one or more of an amorphous alloy, a crystalline alloy, an amorphous alloy ribbon, a nanocrystalline ribbon, or a silicon steel plate including iron (Fe),
the first polymer film includes a first extending portion that extends further than the plurality of soft magnetic layers,
the second polymer film includes a second extending portion that extends further than the plurality of soft magnetic layers,
a portion of an upper surface of the first extending portion and a portion of a lower surface of the second extending portion are connected to each other in a connected area,
the connected area is spaced apart from a side portion of the plurality of soft magnetic layers, and
the connected area includes an area that extends further outward than the side portion of the plurality of soft magnetic layers.
2. The board of claim 1 , wherein at least one of the first polymer film or the second polymer film is a black film.
3. The board of claim 1 , wherein a length(l) of at least one 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 a following equation, wherein A represents a constant of 0.6 to 10:
l =A×h.
4. The board of claim 1 , wherein at least one of the first polymeric film or the second polymeric film includes one or more material of polyethylene, polyacrylic, polyimide, polyamide, and polyurethane.
5. The board of claim 1 , wherein an air gap is formed between the side portion of the plurality of soft magnetic layers and the connected area.
6. The board of claim 1 , further comprising a lead frame connected to the coil pattern,
wherein the first polymeric film and the second polymeric film are provided to surround the lead frame.
7. The board of claim 1 , wherein the near field communication coil is provided to surround a side of the wireless charging coil.
8. The board of claim 1 , wherein a terminal of at least one of the first extending portion and the second extending portion is provided in the connected area.
9. The board of claim 1 , wherein the plurality of soft magnetic layers includes a first soft magnetic sheet and a second soft magnetic sheet, and the second soft magnetic sheet is provided on the first soft magnetic sheet.
10. The board of claim 9 , further comprising a soft magnetic layer for near field communication provided to surround a side surface of the first soft magnetic sheet and the second soft magnetic sheet.
11. The board of claim 10 , wherein the soft magnetic layer for near field communication includes at least one of Fe, Ni, Co, Mn, Al, Zn, Cu, Ba, Ti, Sn, Sr, P, B, N, C, W, Cr, Bi, Li, Y or Cd.
12. The board of claim 1 , wherein the first adhesive layer includes a first extending adhesive portion that extends further outward than the side portion of the plurality of soft magnetic layers, and a portion of the first extending adhesive portion is provided in the connected area.
13. The board of claim 12 , wherein the portion of the first extending adhesive portion is provided between the first extending portion and the second extending portion in the connected area.
14. The board of claim 13 , further comprising a second adhesive layer arranged between the plurality of soft magnetic layers and the second polymeric film.
15. The board of claim 14 , wherein the second adhesive layer includes a second extending adhesive portion that extends further outward than the side portion of the plurality of soft magnetic layers, and a portion of the second extending adhesive portion is provided in the connected area.
16. The board of claim 15 , wherein the portion of the second extending adhesive portion is provided between the first extending portion and the second extending portion in the connected area.
17. The board of claim 16 , wherein the first extending adhesive portion and the second extending adhesive portion are in direct contact with each other.
18. The board of claim 12 , wherein a terminal of the first extending adhesive portion is provided in the connected area.
19. A portable terminal, comprising:
a housing;
a first polymeric film provided in the housing;
a first adhesive layer provided on the first polymeric film;
a plurality of soft magnetic layers provided on the first adhesive layer;
a second polymeric film provided on the plurality of soft magnetic layers; and
a coil pattern provided on one surface of the first polymeric film and the second polymeric film, and including a wireless charging coil and a near field communication coil,
wherein:
the plurality of soft magnetic layers includes one or more of an amorphous alloy, a crystalline alloy, an amorphous alloy ribbon, a nanocrystalline ribbon, or a silicon steel plate including iron (Fe),
the first polymer film includes a first extending portion that extends further than the plurality of soft magnetic layers,
the second polymer film includes a second extending portion that extends further than the plurality of soft magnetic layers,
a portion of an upper surface of the first extending portion and a portion of a lower surface of the second extending portion are connected to each other in a connected area,
the connected area is spaced apart from a side portion of the plurality of soft magnetic layers, and
the connected area includes an area that extends further outward than the side portion of the plurality of soft magnetic layers.
20. The portable terminal of claim 19 , wherein the first adhesive layer includes a first extending adhesive portion that extends further outward than the side portion of the plurality of soft magnetic layers, and a portion of the first extending portion is provided in the connected area.