Method for producing a coil and electronic device

Patent metadata

Field	Value
Publication number	US-10446314-B2
Application number	US-201514792344-A
Country	US
Kind code	B2
Filing date	Jul 6, 2015
Priority date	Nov 2, 2012
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

The invention relates to a method for producing a coil integrated in a substrate or applied to a substrate, wherein the coil has first winding portions, which each have first ends and second ends, and wherein the coil has second winding portions and third winding portions, wherein each two of the first ends are electrically interconnected by the second winding portions and two corresponding second ends of the first winding portions are electrically interconnected by the third winding portions, such that coil windings of the coil are formed hereby, wherein at least the first winding portions are applied by means of a 3D printing method, wherein this is aerosol jet or inkjet printing, for example.

First claim

The invention claimed is:

1. An electronic device comprising at least one coil integrated in a substrate or applied to a substrate, the at least one coil including first winding portions, which each have first ends and second ends, the at least one coil having second winding portions, third winding portions, and a coil core, wherein each two of the first ends are electrically interconnected by the second winding portions and two corresponding second ends of the first winding portions are electrically interconnected by the third winding portions to form the at least one coil, the electronic device produced in accordance with a method comprising:
printing, using a three-dimensional printing technique, the first winding portions and the second winding portions; and
printing, using the three-dimensional printing technique, the third winding portions on the coil core to form the at least one coil having an axis that runs parallel to a surface of the substrate; and wherein
the three-dimensional printing technique comprises at least one of aerosol jet printing and inkjet printing.

2. The electronic device of claim 1 , wherein said device comprises at least one of a sensor and an actuator.

3. The electronic device of claim 2 , wherein the sensor comprises at least one of a pressure sensor, force sensor, acceleration sensor, and a magnetic field sensor.

4. An electronic device comprising:
an electronic printed circuit board including at least one coil integrated in or applied to the printed circuit board, the at least one coil including:
a coil core;
first winding portions, which each have first and second ends;
second winding portions; and
third winding portions;

wherein each two of the first ends of the first winding portions are electrically interconnected by the second winding portions and wherein two corresponding second ends of the first winding portions are electrically interconnected by the third winding portions, with the result that coil windings of the at least one coil are formed hereby, the coil having an axis that runs parallel to a surface of a substrate;
wherein the first winding portions and the second winding portions are applied by means of a three dimensional (3D) printing method;
wherein the third winding portions are applied by means of the 3D printing method on the coil core; and
wherein the 3D printing method includes at least one of aerosol jet printing and inkjet printing.

5. The electronic device of claim 4 , wherein said device comprises at least one of a sensor and an actuator.

6. The electronic device of claim 5 , wherein the sensor comprises at least one of a pressure sensor, force sensor, acceleration sensor, and a magnetic field sensor.

7. The electronic device of claim 1 , wherein the at least one coil encloses a magnetic core, said method further comprising:
forming said magnetic core from a paste comprising ferromagnetic particles, wherein said forming further comprises curing said paste.

8. The electronic device of claim 7 , wherein said curing further comprises applying ultrasound to said paste during said curing.

9. The electronic device of claim 4 , wherein the at least one coil is configured to enclose a magnetic core, said magnetic core formed by curing a paste comprising ferromagnetic particles.

10. The electronic device of claim 9 , wherein said magnetic core is formed by applying ultrasound to said paste during said curing of said paste.

Assignees

• Wuerth Elektronik Gmbh & Co Kg
• Hahn Schickard Ges Fuer Angewandte Forschung E V

Inventors

• Kostelnik Jan
• Schreivogel Alina
• WOLF JüRGEN
• Keck Jürgen
• Giousouf Ing Metin
• Reininger Rer Nat Thomas
• Kiessling Ing Albert

Classifications

• H05K3/125

  by ink-jet printing · CPC title

• H01F2017/0066

  with a magnetic layer · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• H05K2203/1344

  Spraying small metal particles or droplets of molten metal · CPC title

• H05K2201/086

  for inductive purposes, e.g. printed inductor with ferrite core · CPC title