Coil device and apparatus including the same
There are provided a coil device and an apparatus including the same. The coil device includes a first coil and a second coil. The first coil is configured to receive a first signal using a first magnetic field formed in a first direction. The second coil includes a shape different from the first coil and is configured to form a second magnetic field in a second direction, different from the first direction, to transmit a second signal, different from the first signal.
1. A coil device, comprising:
a first coil configured to receive a first signal using a first magnetic field formed in a first direction; and
a second coil comprising a shape different from the first coil and configured to form a second magnetic field in a second direction to transmit a second signal, the second direction being different from the first direction, the second signal being different from the first signal,
wherein the second coil includes a first region on one side of the first coil, a second region on another side of the first coil so as to be spaced apart from the first region, and a third region connecting the first region and the second region to each other, and
wherein a number of lines of the third region is less than a number of turns of each of the first region and the second region.
2. The coil device of claim 1 , wherein the first coil comprises a spiral shape and the second coil comprises a solenoid shape.
3. The coil device of claim 1 , wherein the first signal is a power signal that is wirelessly transmitted, and the second signal is a communications signal transmitted in a magnetic secure transmission (MST) scheme.
4. The coil device of claim 1 , wherein a direction of the first magnetic field, at a center of the first coil, is the first direction, and a direction of the second magnetic field, in a region above the center of the first coil, is the second direction, and
the first direction is a direction normal to a plane on which the first coil is disposed, and the second direction is a direction orthogonal to the first direction.
5. The coil device of claim 1 , wherein the first coil and the second coil are stacked.
6. The coil device of claim 1 , further comprising:
a first substrate, a magnetic sheet, and a second substrate that are sequentially stacked,
wherein the first coil is on one surface of the first substrate and another surface of the first substrate, the second coil is on the another surface of the first substrate and one surface of the second substrate, and the magnetic sheet is a core of the second coil.
7. The coil device of claim 6 , wherein the first coil comprises:
a coil pattern part on the one surface of the first substrate and having a spiral shape,
a first connection pattern part on the one surface of the first substrate and connected to an outer distal end of the coil pattern part, and
a second connection pattern part on the another surface of the first substrate and connected to an inner distal end of the coil pattern part through a via in the first substrate.
8. The coil device of claim 7 , wherein
the second coil comprises,
first patterns on the another surface of the first substrate, and
second patterns on the one surface of the second substrate, and
both distal ends of each of the first patterns are connected to both distal ends of each of the second patterns.
9. The coil device of claim 8 , wherein each of the first patterns comprises a portion having the same shape as that of the coil pattern part.