Multilayer coil array

Abstract

The present invention provides a multilayer coil array capable of suppressing a short circuit between adjacent coils and controlling the coupling coefficient of the coils to a desired value. The multilayer coil array includes a body including a magnetic layer with magnetic particles; first and second coils which are arranged in the body; and first to fourth outer electrodes arranged on the surfaceof the body and electrically connected to any one of the ends of the first and second coils. A non-magnetic layer is provided between the first and second coils. The first and second coils are respectively formed by connecting a plurality of coil conductors in the stacking direction. At least one out of a coil conductor of the first coil that is closest to the second coil among the plurality of coil conductors of the first coil and a coil conductor of the second coil that is closest to the first coil among the plurality of coil conductors of the second coil is connected with the non-magneticlayer. The length of a coil conductor layer that contacts the non-magnetic layer of the coil conductor contacting the non-magnetic layer is different from the length of the other coil conductor layers.

Description

technical field [0001] The present invention relates to a laminated coil array. Background technique [0002] Conventionally, as a coil component, there exists a thing described in Unexamined-Japanese-Patent No. 2016-186963 (patent document 1). [0003] Patent Document 1 describes a laminated electronic component, wherein, in a laminated electronic component in which a magnetic layer and a conductor pattern are laminated, the conductor pattern between the magnetic layers is connected, and a coil is formed in the laminate, the magnetic layer The coil is formed of a metal magnetic body, and the coil connects at least one lead-out conductor pattern to an external terminal formed on the bottom surface of the laminate by the conductor at the corner of the laminate. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2016-186963 [0005] In the laminated coil array in which a plurality of coils are laminated inside the main body, a short circuit may occur between adjacent ...

AI Technical Summary

Problems solved by technology

However, it is known that there is a problem that if the upper end or lower end of the coil is in contact with the non-magnetic layer, the magnetic flux will be blocked.

On the other hand, if a magnetic layer is provided between the coil and the non-magnetic layer, it is possible to suppress the magnetic flux from being blocked, but it is known that the following problem arises, that is, if the coil and the non-magnetic layer are completely disconnected by the magnetic layer, it is impossible to make the magnetic flux more stable. magnetically coupled coils

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