COIL FOR WIRELESS COMMUNICATIONS, COIL MODULE AND MOBILE TERMINAL USING THE SAME
A composite wireless transmitter coil includes a first coil; and a second coil spaced apart from the first coil, wherein the first coil and the second coil form a first magnetic field, and a magnetic line of force of the first magnetic field has a closed loop shape that passes through a region of the first coil and a region of the second coil.
1 . A composite wireless transmitter coil, comprising:
a first coil; and
a second coil spaced apart from the first coil,
wherein the first coil and the second coil form a first magnetic field, and
a magnetic line of force of the first magnetic field has a closed loop shape that passes through a region of the first coil and a region of the second coil.
2 . The composite coil of claim 1 , further comprising a metal part formed to be spaced apart from the first coil and the second coil between the first coil and the second coil, on a plane which is substantially the same as or is substantially parallel to the first coil or the second coil.
3 . The composite coil of claim 1 , further comprising a metal part overlapping the region of the first coil or the region of the second coil, on a plane which is substantially the same as or is substantially parallel to the first coil or the second coil.
4 . The composite coil of claim 3 , wherein the metal part comprises a metal plate comprising a slit or a through hole, and
the slit or the through hole overlaps the region of the first coil or the region of the second coil.
5 . The composite coil of claim 1 , wherein the first coil and the second coil are on a plane which is substantially the same or substantially parallel to each other, and
a second magnetic field, formed by the first coil, and a third magnetic field, formed by the second coil, are reinforced by each other in a first direction directed from the first coil to the second coil, or a second direction directed from the second coil to the first coil.
6 . The composite coil of claim 1 , wherein the first coil is wound in a clockwise direction,
the second coil is wound in a counterclockwise direction, and
the first coil and the second coil are configured to have a current flowing in the first coil and a current flowing in the second coil flowing in the clockwise direction.
7 . The composite coil of claim 1 , wherein the first coil and the second coil are wound in a clockwise direction,
the first coil is configured to have a current flowing in the clockwise direction, and
the second coil is configured to have a current flowing in a counterclockwise direction.
8 . A mobile terminal comprising:
a housing;
a first coil disposed proximate to a first portion of the housing; and
a second coil spaced apart from the first coil in a length direction of the housing and disposed proximate to a second portion of the housing.
9 . The mobile terminal of claim 8 , wherein the housing comprises:
a non-metal part wherein at least some regions of the first coil and at least some regions of the second coil overlap the non-metal part, and
a metal part overlapping a second region of the first coil different from the first region or a second region of the second coil different from the first region, on a plane which is substantially the same as or substantially parallel to the first coil or the second coil.
10 . The mobile terminal of claim 9 , wherein the metal part comprises a slit or a through hole, and
a shape of the non-metal part corresponds to a shape of the slit or the through hole.
11 . A coil module comprising:
a substrate;
a coil for wireless communications formed on one region of the substrate, and for performing communications with a first device wirelessly, using a first magnetic field; and
a coil for wireless charging formed on the other region of the substrate, and for receiving power from a second device wirelessly,
wherein the coil for wireless communications is wound around a first axis, and
the coil for wireless charging is wound around a second axis, disposed perpendicular to the first axis.
12 . The coil module of claim 11 , wherein the first axis is a direction parallel to the substrate, and
the second axis is a direction perpendicular to the substrate.
13 . The coil module of claim 11 , wherein the substrate includes a first magnetic body in one region of the substrate, and
the coil for wireless communications is a solenoid coil wound around the first magnetic body,
wherein the coil for wireless charging is formed on one surface of the other region of the substrate, and a second magnetic body is formed on the other surface of the other region of the substrate.
14 . The coil module of claim 11 , wherein the coil for wireless communications includes:
a first coil formed on one side of the coil for wireless charging; and
a second coil formed on the other side of the coil for wireless charging, and
the first coil and the second coil form the first magnetic field, and
a magnetic line of force of the first magnetic field has a closed loop shape that passes through a region of the first coil and a region of the second coil.
15 . The coil module of claim 14 , wherein the first coil and the second coil are solenoid coils wound in the same direction as each other, and
a direction of a current flowing in the first coil and a direction of a current flowing in the second coil are the same as each other.
16 . The coil module of claim 14 , wherein the first coil and the second coil are solenoid coils wound in directions opposing each other, and
a direction of a current flowing in the first coil and a direction of a current flowing in the second coil are the same as each other.
17 . The coil module of claim 11 , wherein the coil for wireless communications includes:
a first communications coil pattern formed on one surface of the substrate;
a second communications coil pattern formed on the other surface of the substrate; and
a plurality of via holes connected to the first communications coil pattern and the second communications coil pattern, and
the substrate includes a first magnetic body included in an inner region formed by the first communications coil pattern, the second communications coil pattern, and the plurality of via holes.
18 . A mobile terminal receiving power wirelessly, or transmitting or receiving communications data wirelessly, using a coil module, the mobile terminal comprising:
a coil module including a substrate, and a coil for wireless communications and a coil for wireless charging formed on the substrate;
a wireless communications unit for performing communications with a first device wirelessly, through the coil for wireless communications; and
a wireless charging unit for receiving power from a second device wirelessly through the coil for wireless charging,
wherein the coil for wireless communications is wound around a first axis, and the coil for wireless charging is wound around a second axis, disposed perpendicular to the first axis.
19 . The mobile terminal of claim 18 , wherein the coil for wireless communications includes:
a first communications coil formed on one side of the coil for wireless charging; and
a second communications coil formed on the other side of the coil for wireless charging, and
the first communications coil and the second communications coil form a first magnetic field, and
a magnetic line of force of the first magnetic field has a closed loop shape that passes through a region of the first communications coil and a region of the second communications coil.
20 . The mobile terminal of claim 18 , wherein the coil for wireless communications includes:
a first communications coil pattern formed on one surface of the substrate;
a second communications coil pattern formed on the other surface of the substrate; and
a plurality of via holes connected to the first communications coil pattern and the second communications coil pattern, and
the substrate includes a first magnetic body included in an inner region formed by the first communications coil pattern, the second communications coil pattern, and the plurality of via holes.