HEAT RADIATING SHEET FOR WIRELESS CHARGING AND ELECTRONIC DEVICE HAVING THE SAME
An electronic device includes a power module that transmits or receives power wirelessly and includes a coil portion that generates a magnetic field; and a heat radiating sheet disposed on one side of the power module. The heat radiating sheet includes line-type conductors arranged to overlap the coil portion and an area-type conductor disposed along a periphery of the line-type conductors.
1 . An electronic device comprising:
a power module configured to transmit or receive power wirelessly and comprising a coil portion configured to generate a magnetic field; and
a heat radiating sheet disposed on one side of the and comprising line-type conductors arranged to overlap the coil portion and an area-type conductor disposed along a periphery of the line-type conductors.
2 . The electronic device of claim 1 , wherein the heat radiating sheet further comprises a cutting portion comprising a cut in a radial direction of the area-type conductor.
3 . The electronic device of claim 1 , wherein the area-type conductor is electrically connected to ground.
4 . The electronic device of claim 1 , wherein the heat radiating sheet further comprises an insulating layer attached to the line-type conductors and the area-type conductor.
5 . The electronic device of claim 4 , wherein the line-type conductors include first line-type conductors attached to a first surface of the insulating layer and second line-type conductors attached to a second surface of the insulating layer, and the area-type conductor includes a first area-type conductor attached to the first surface of the insulating layer and a second area-type conductor attached to the second surface of the insulating layer.
6 . The electronic device of claim 5 , wherein the first line-type conductors and the second line-type conductors face in different directions.
7 . The electronic device of claim 5 , wherein the heat radiating sheet further comprises an interlayer connection conductor electrically connecting the first area-type conductor and the second area-type conductor.
8 . The electronic device of claim 1 , wherein one end of each of the line-type conductors is connected to the area-type conductor.
9 . The electronic device of claim 8 , wherein the line-type conductors each include a first end and a second end opposite the first end, and the line-type conductors are arranged such that first line-type conductors having the first end connected to the area-type conductor are alternated with second line-type conductors having the second end connected to the area-type conductor.
10 . The electronic device of claim 1 , wherein each of the line-type conductors has a line width of 200 μm or less.
11 . The electronic device of claim 1 , wherein the line-type conductors and the area-type conductor are formed of a same material.
12 . The electronic device of claim 1 , wherein the line-type conductors are spaced apart from each other so as not to contact each other.
13 . The electronic device of claim 1 , further comprising a case configured to accommodate the coil portion and the heat radiating sheet therein,
wherein a first surface of the heat radiating sheet is attached to an internal surface of the case and a second surface of the heat radiating sheet is attached to the coil portion.
14 . A heat radiating sheet for wireless charging disposed between a power transmitting module and a power receiving module, the heat radiating sheet comprising:
an insulating layer;
first line-type conductors disposed on a first surface of the insulating layer and electrically disconnected from each other; and
second line-type conductors disposed on a second surface of the insulating layer and electrically disconnected each other, and electrically disconnected from the first line-type conductors.
15 . The heat radiating sheet of claim 14 , wherein the first line-type conductors are arranged to have longitudinal axes directed in a first direction and the second line-type conductors are arranged to have longitudinal axes directed in a second direction that is different from the first direction.
16 . The heat radiating sheet of claim 14 , further comprising an area-type conductor disposed along a periphery of either the first line-type conductors or a periphery of the second line-type conductors.
17 . The heat radiating sheet of claim 16 , further comprising a cut in the area-type conductor in a radial direction of the area-type conductor.
18 . An apparatus comprising:
a coil layer comprising coil wiring configured to generate a magnetic field;
a magnetic layer disposed on a first surface of the coil layer;
an insulating layer disposed on a second surface of the coil layer; and
a conductive layer comprising line-type conductors disposed parallel to each other on the insulating layer and arranged to overlap the coil wiring.
19 . The apparatus of claim 18 , wherein the conductive layer further comprises an area-type conductor disposed on the insulating layer and arranged along a periphery of an area in which the line-type conductors overlap the coil wiring.
20 . The apparatus of claim 19 , further comprising a cutting portion that cuts the area-type conductor in a radial direction, wherein the cutting portion is a linear slit connecting the area in which the line-type conductors overlap the coil wiring and an area outside of the area-type conductor.