US 2019/0244750 A1 · COIL COMPONENT AND MANUFACTURING METHOD THEREFOR

Abstract

A coil component is provided with a coil part in which a plurality of conductor layers and a plurality of interlayer insulating layers are alternately laminated; and a sealing resin layer that covers the coil part. The conductor layers each include a spiral pattern. The interlayer insulating layers each cover an upper surface and a side surface of the spiral pattern. The recessed part is formed in the side wall surface of the interlayer insulating layer. A part of the sealing resin layer is embedded in the recessed part.

Claims20

Dependent claims

A coil component comprising:

a coil part in which a plurality of conductor layers and a plurality of interlayer insulating layers are alternately laminated;
and
a sealing resin layer that covers the coil part, wherein
the conductor layers each include a spiral pattern,
the interlayer insulating layers each cover an upper surface and a side surface of the spiral pattern,
a recessed part is formed in the side wall surface of the interlayer insulating layer, and
a part of the sealing resin layer is embedded in the recessed part.

4 more elements

A manufacturing method for a coil component comprising the steps of:

forming a coil part by alternately repeating a formation of a conductor layer including a spiral pattern and a formation of an interlayer insulating layer that covers upper and side surfaces of the spiral pattern;
and
forming a first sealing resin layer that covers the coil part, wherein
the step of forming the coil part includes a step of forming a recessed part in a side wall surface of the interlayer insulating layer, and
the step of forming the first sealing resin layer includes a step of embedding a part of the first sealing resin layer in the recessed part.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/265,522Filed 1 Feb 2019

Priority

JP 2018-0192996 Feb 2018

Published

8 Aug 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

H01F 17/0013
Printed inductances: with stacked layers
H01F 27/327
Insulating of coils, windings, or parts thereof: encapsulating or impregnating
H01F 27/24
Details of transformers or inductances, in general: magnetic cores
H01F 27/2804
Coils; Windings; Conductive connections: printed windings

Coil component and manufacturing method therefor

Life of this patent

Coil component and manufacturing method therefor

Life of this patent

Abstract

Claims20