COIL MODULE FOR WIRELESS COMMUNICATIONS AND METHOD OF MANUFACTURING THE SAME
A coil module for wireless communications includes: a coil part formed by a molded substrate and having a solenoid shape; and a magnetic member disposed in an insertion hole of the coil part.
1 . A coil module for wireless communications comprising:
a coil part formed by a molded substrate and comprising a solenoid shape; and
a magnetic member disposed in an insertion hole of the coil part.
2 . The coil module for wireless communications of claim 1 , wherein the substrate comprises a flexible circuit board.
3 . The coil module for wireless communications of claim 1 , wherein the substrate is a single-sided substrate comprising a base layer and a metal layer formed on one surface of the base layer.
4 . The coil module for wireless communications of claim 3 , wherein the metal layer and the base layer are disposed above and below the magnetic member, and an order in which the metal layer and the base layer are disposed above the magnetic member is the same as an order in which the metal layer and the base layer are disposed below the magnetic member.
5 . The coil module for wireless communications of claim 3 , wherein the metal layer comprises a first pattern connected to a connection terminal, a second pattern connected to the first pattern and comprising the solenoid shape, and a third pattern connected to the second pattern and connected to another connection terminal.
6 . The coil module for wireless communications of claim 5 , wherein
the first pattern comprises a bar shape extending in a length direction of the second pattern at an outer side of the second pattern, and
the third pattern comprises the bar shape extending in a width direction of the second pattern at an outer end portion of the second pattern.
7 . The coil module for wireless communications of claim 5 , wherein the second pattern comprises first pattern members disposed on the magnetic member, second pattern members disposed below the magnetic member, and connection pattern members disposed at opposite sides of the magnetic member and connecting corresponding ones of the first pattern members and the second pattern members to each other.
8 . The coil module for wireless communications of claim 7 , wherein short preventing grooves for preventing a short circuit with an adjacent connection pattern member, among the connection pattern members, are disposed at opposite sides of the connection pattern members.
9 . The coil module for wireless communications of claim 7 , wherein inclined parts are disposed at opposite end portions of the first pattern members and the second pattern members to form the insertion hole.
10 . The coil module for wireless communications of claim 9 , wherein the first pattern members are disposed above the connection pattern members and the second pattern members are disposed below the connection pattern members.
11 . The coil module for wireless communications of claim 1 , wherein the magnetic member comprises a magnetic sheet comprising a plate shape, and a cover sheet attached to opposite surfaces of the magnetic sheet.
12 . The coil module for wireless communications for claim 1 , wherein the magnetic member comprises a cross section having a concave-convex shape.
13 . The coil module for wireless communications for claim 12 , wherein the magnetic member comprises mounting grooves formed in opposite surfaces of the magnetic member, and wherein a pattern included in the coil part is inserted into the mounting grooves.
14 . The coil module for wireless communications of claim 1 , further comprising an exterior cover sheet attached to an outer surface of the coil part and enclosing the coil part.
15 . A coil module for wireless communications comprising:
a coil part comprising a solenoid shape and formed by a molded metal plate; and
a magnetic member inserted into an insertion hole of the coil part,wherein the magnetic member comprises a magnetic sheet comprising a plate shape and a cover sheet attached to opposite surfaces of the magnetic sheet.
16 . The coil module for wireless communications for claim 15 , wherein the magnetic member further comprises a cross section having a concave-convex shape.
17 . The coil module for wireless communications for claim 16 , wherein the magnetic member further comprises mounting grooves formed in opposite surfaces of the magnetic sheet, wherein a pattern included in the coil part is inserted into the mounting grooves.
18 . A method to manufacture a coil module for wireless communications, the method comprising:
etching a metal layer on a flexible circuit board comprising the metal layer and a base layer;
shaping the flexible circuit board to comprise a solenoid shape disposed around an insertion hole; and
inserting a magnetic member in the insertion hole.
19 . The method of claim 18 , wherein the shaping of the flexible circuit board to comprise the solenoid shape comprises molding the flexible circuit board to comprise a first pattern configured to be connected to a connection terminal, a second pattern connected to the first pattern and comprising the solenoid shape, and a third pattern connected to the second pattern and configured to be connected to another connection terminal.
20 . The method of claim 19 , wherein the shaping of the flexible circuit board further comprises pressurizing the second pattern to form the insertion hole.
21 . The method of claim 18 , wherein the shaping of the flexible circuit board further comprises molding the flexible circuit board by a press-blanking process.