Air coil and manufacturing method thereof

Abstract

A manufacturing method of an air coil with leads includes the following steps. Firstly, at least one conductive bump is formed on a base, and the base has at least one lead. Then, at least one end of at least one coil body is disposed on the lead, and is correspondingly contacted with the conductive bump. Finally, the shape of the conductive bump is changed to connect the lead and the coil body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:

FIG. 1 is a flowchart of a manufacturing method of an air coil with leads according to a preferred embodiment of the invention; and

FIGS. 2A to 2F show detailed steps in the manufacturing method of FIG. 1.

Claims

1. A manufacturing method of an air coil, comprising steps of: forming at least one conductive bump on a base with at least one lead; anddisposing at least one end of at least one coil body on the lead, wherein the end of the coil body correspondingly contacts with the conductive bump, so that the coil body and the lead are connected by the conductive bump.

2. The manufacturing method of claim 1, further comprising a step of separating an end of the lead, which is unconnected with the coil body, from the base.

3. The manufacturing method of claim 1, further comprising a step of fixing the base on a tool, wherein the coil body is disposed in at least one recess of the tool so that the end of the coil body is aligned to the lead.

4. The manufacturing method of claim 1, wherein the conductive bump is formed by way of printing, filling, or sifting.

5. The manufacturing method of claim 1, wherein a shape of the conductive bump is changed by heating or an ultrasonic method for connecting the coil body and the lead.

6. The manufacturing method of claim 5, wherein heating equipment is used to heat the conductive bump for changing the shape of the conductive shape, and the heating equipment is an oven, a hot air gun, a heater, or an infrared (IR) stove.

7. The manufacturing method of claim 1, further comprising steps of: covering the base with a mold plate, wherein the mold plate has at least one hole corresponding to the lead; andforming the conductive bump in the hole by way of printing, filling, or sifting.

8. The manufacturing method of claim 7, wherein the hole has a circular, polygonal, elliptical, regular, or irregular shape.

9. The manufacturing method of claim 1, wherein the material of the base and the lead comprises a metal or an alloy, and the base and the lead are integrally formed as a single piece.

10. The manufacturing method of claim 1, wherein the conductive bump is adhered or attached on the lead, and the material of the conductive bump comprises a solder paste, a solder ball, a thermally deformable material or a flexible material.

11. An air coil, comprising: at least one lead; andat least one coil body, at least one end of which is in contact with the lead;wherein the coil body or the lead is formed with a conductive bump by way of printing, filling, or sifting so as to connect the coil body and the lead.

12. The coil of claim 11, wherein the lead is positioned on a base, and the base and the lead are integrally formed as a single piece.

13. The coil of claim 11, wherein a shape of the conductive bump is changed by heating or an ultrasonic method for connecting the coil body and the lead.

14. The coil of claim 11, wherein the material of the lead is a metal or an alloy.

15. The coil of claim 11, wherein the coil is used in an embedded inductor or a non-embedded inductor.

16. The coil of claim 11, wherein the conductive bump is adhered or attached on the lead.

17. A manufacturing method of an air coil, comprising steps of: disposing at least one coil body on a base having at least one lead, wherein at least one end of the coil body is aligned to the lead; andforming at least one conductive bump on the lead or the end of the coil body so that the coil body and the lead are connected by the conductive bump.

18. The manufacturing method of claim 17, further comprising a step of separating an end of the lead, which is not connected to the coil body, from the base.

19. The manufacturing method of claim 17, further comprising a step of fixing the base on a tool, wherein the coil body is disposed in at least one recess of the tool so that the end of the coil body is aligned to the lead.

20. The manufacturing method of claim 17, further comprising steps of: covering the base with a mold plate, wherein the mold plate has at least one hole corresponding to the lead or the end of the coil body; andforming the conductive bump in the hole by way of printing, filling, or sifting.