Coil module

A coil module comprising:

• a flexible board;
• an input/output terminal unit extended from the flexible board;
• a first coil on a surface of the flexible board and connected to the input/output terminal unit;
• and
• a second coil on the surface of the flexible board,
• wherein the first coil includes a first pattern portion having one end connected to the input/output terminal unit and being on the board to define an internal area surrounded by the first pattern portion, a second pattern portion connected to the first pattern portion and traversing the internal area from one end to another end to divide the internal area into two or more portions, and a third pattern portion having one end connected to the second pattern portion and the other end connected to the input/output terminal unit, and
• wherein the second coil includes a third coil having a planar spiral shape and fourth coil spaced apart from the first coil and having the planar spiral shape,
• one, or both, of the third coil and the fourth coil is or are in the internal area,
• the second pattern portion is in the internal area surrounded by the first pattern portion, and
• a first number of lines of the second pattern portion is smaller than or equal to a number of turns of the first pattern portion.