Coil component comprising a plurality of coated conductive wires and manufacturing method thereof

1. A coil component comprising:

a drum core including a first flange portion, a second flange portion and a winding core portion positioned between the first and second flange portions;

a plurality of coated conductive wires forming a first winding layer wound around the winding core portion and a second winding layer wound around the winding core portion with an intervention of the first winding layer; and

a resin coating layer covering the coated conductive wires,

wherein the plurality of coated conductive wires includes first, second, third, and fourth conductive wires,

wherein the first and fourth conductive wires are alternately wound in the first winding layer, and the second and third conductive wires are alternately wound in the second winding layer,

wherein a maximum space between the first and fourth conductive wires in the first winding layer is narrower than a diameter of the coated conductive wires, and

wherein a predetermined turn of the first conductive wire is apart from an adjacent turn of the fourth conductive wire to form a first space, and wherein the first space is filled with the resin coating layer.

2. The coil component as claimed in claim 1 , wherein a maximum space between the second and third conductive wires in the second winding layer is narrower than the diameter of the coated conductive wires.

3. The coil component as claimed in claim 1 , wherein each of the first and second flange portions has three or more connection portions, and

each end of the coated conductive wires is connected to an associated one of the connection portions.

4. The coil component as claimed in claim 3 , wherein the first and second conductive wires constitute a primary winding, and the third and fourth conductive wires constitute a secondary winding insulated from the primary winding.

5. The coil component as claimed in claim 3 , wherein each of the connection portions is substantially free from the resin coating layer.

6. The coil component as claimed in claim 1 , wherein the first and fourth conductive wires are electrically insulated from each other, and the second and third conductive wires are electrically insulated from each other.

7. The coil component as claimed in claim 6 , wherein the first and second conductive wires are electrically connected to each other, and the third and fourth conductive wires are electrically connected to each other.

8. The coil component as claimed in claim 1 , wherein a number of turns of the first to fourth conductive wires are a same as one another.

9. The coil component as claimed in claim 1 , wherein the predetermined turn of the first conductive wire is apart from another adjacent turn of the fourth conductive wire opposite to the adjacent turn to form a second space, and

wherein the first space is greater than the second space.