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 near field communication, comprising:
a first polymeric film;
a soft magnetic layer provided on the first polymeric film;
a second polymeric film provided on the soft magnetic layer; and
a coil unit provided on the second polymeric film,
wherein the coil unit includes a first antenna including a plurality of turns and a second antenna including a plurality of turns and provided outside of the first antenna,
wherein the first polymeric film includes a plurality of holes including a first hole and a second hole, and a first extending portion that extends further in a first direction than an outermost side of the soft magnetic layer,
wherein the second polymeric film includes a plurality of holes including a third hole and a fourth hole, and a second extending portion that extends further in the first direction than the outermost side of the soft magnetic layer,
wherein a connected region is formed by the first extending portion and the second extending portion being connected to each other,
wherein the connected region is spaced apart from the outermost side and is extended further in an outside direction of the outermost side, and
wherein the first hole and the second hole are spaced apart from each other.
2. The board of claim 1 , wherein the first antenna is disposed between the first hole and the second hole.
3. The board of claim 2 , wherein the first hole and the third hole are disposed at positions corresponding to each other, and the second hole and the fourth hole are disposed at positions corresponding to each other.
4. The board of claim 3 , wherein the first hole and the second hole are disposed outside the first antenna.
5. The board of claim 4 , wherein the first hole and the second hole are disposed outside an outermost turn of the first antenna.
6. The board of claim 5 , wherein an innermost turn of the first antenna is disposed on a virtual line connecting a center of the first hole and a center of the second hole.
7. The board of claim 3 , wherein at least one of the first hole or the second hole is disposed between an outermost turn of the second antenna and an outermost turn of the first antenna.
8. The board of claim 3 , wherein a length (l) of at least one of the first extending portion or the second extending portion and a thickness (h) of the soft magnetic layer have a relation of a following equation, wherein A represents a constant of 0.6 to 10:
l=A×h [Equation].
9. The board of claim 8 , wherein the soft magnetic layer includes a first soft magnetic layer and a second soft magnetic layer.
10. The board of claim 9 , wherein the second soft magnetic layer is disposed on a side of the first soft magnetic layer.
11. The board of claim 9 , wherein the second soft magnetic layer is disposed on the first soft magnetic layer.
12. The board of claim 1 , the soft magnetic layer 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.
13. The board of claim 12 , wherein at least one of the first polymeric film or the second polymeric film includes at least one of polyethylene, polyacrylic, polyimide, polyamide, or polyurethane.
14. The board of claim 1 , wherein at least one of the first hole or the second hole is a hole for alignment upon manufacturing the board.
15. A portable terminal comprising:
a board provided for wireless charging and near field communication according to claim 1 ; and
a housing accommodating the board.