Inductor

• US 20060214759A1
• Filed: 03/23/2006
• Published: 09/28/2006
• Est. Priority Date: 03/23/2005
• Status: Abandoned Application

• Current Assignee: Sumida Corporation
• Original Assignee: Sumida Corporation
• Inventors: Kawarai, Mitsugu
• Application Number:
  US11/388,804
• Publication Number:
  US 20060214759A1
• Time in Patent Office: Days
• US Class Current: 336/200
• CPC Class Codes: H01F 17/0006 Printed inductances printed coils for dynamo-electric machines H02K3/26; printed circuits H05K
• CPC Class Codes: H01F 17/0013 with stacked layers
• CPC Class Codes: H01F 2017/006 flexible printed inductors
• CPC Class Codes: H01F 41/046 structurally combined with ferromagnetic material

Abstract

An inductor that can be mounted on a flexible substrate and which also can be used in large-current signal lines or power lines. The inductor has a film-type coil formed by providing, in order, a heat-resistant resin film, a flexible conductor coil and insulation layer for covering the conductor coil. A compound magnet that combines magnetic powder and resin is disposed on one or both sides of the film-type coil, with the heat-resistant resin film, the insulation layer and the compound magnetic body being at least flexible.

Claims

1. An-inductor comprising:

a film-type coil formed from, in order, a heat-resistant resin film, a flexible conductor coil and an insulation layer for covering the conductor coil,

a compound magnet combining magnetic powder and resin formed on one or both sides of the film-type coil,

the heat-resistant resin film, the insulation layer and the compound magnet being at least flexible.

2. The inductor according to claim 1, wherein the conductor coil is formed by overlaying the heat-resistant resin film with an electrically conductive thin layer.

3. The inductor according to claim 1, wherein the conductor coil and the insulation layer are formed by pattern-printing an electrically conductive paste and a resin solution onto the heat-resistant resin film.

4. The inductor according to claim 1, wherein the conductor coil is pattern-formed by etching, electroplating, electrocasting, printing or vapor-coating a metal onto the heat-resistant resin film.

5. The inductor according to claim 1, wherein a punch hole is formed on a portion of the heat-resistant resin film on which the conductor coil is not formed.

6. An inductor comprising:

a film-type coil formed from, in order, a heat-resistant resin film, a flexible conductor coil and an insulation layer for covering the conductor coil,

a magnet disposed on one or both sides of the film-type coil,

the heat-resistant resin film, the insulation layer and the magnet being at least flexible.

7. The inductor according to claim 6, wherein both ends of the conductor coil are exposed at end surfaces of the heat-resistant resin film and connected to an external electrode, and an insulator is disposed between said external electrode and the magnet.

8. The inductor according to claim 6, wherein a plurality of conductor coils are provided.

9. The inductor according to claim 6, wherein the magnet is a metal magnetic layer.

10. The inductor according to claim 9, wherein the metal magnetic layer is a foil manufactured by rolling or formed by quenching molten metal.

11. The inductor according to claim 9, wherein the metal magnetic layer is formed by electrocasting, electroplating, or vapor-coating including physical vapor deposition (PVD).

12. The inductor according to claim 9, wherein the metal magnetic layer is heat treated.

13. The inductor according to claim 6, wherein the conductor coil is formed by overlaying the heat-resistant resin film with an electrically conductive thin layer.

14. The inductor according to claim 6, wherein the conductor coil and the insulation layer are formed by pattern-printing an electrically conductive paste and a resin solution onto the heat-resistant resin film.

15. The inductor according to claim 6, wherein the conductor coil is pattern-formed by etching, electroplating, electrocasting, printing, PVD of or vapor-coating a metal onto the heat-resistant resin film.