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US 2014/0176284 A1Published application
Common mode filter and method of manufacturing the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJong Yun LEE, Sung Kwon Wi
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Abstract
Disclosed herein are a method of manufacturing a common mode filter forming a coil electrode by directly patterning metal layers laminated on both surfaces of a core insulating layer while not using a build-up process, and the common mode filter manufactured according to the method.
Claims10
A common mode filter, comprising:
- a core insulating layer;
- coil electrodes formed on both surfaces of the core insulating layer;
- external electrode terminals connected to end portions of the coil electrode;
- and
- an external insulating layer covering a surface of the core insulating layer,
- wherein the external electrode terminals are formed to face both surfaces of the core insulating layer and are connected by a connection electrode.
3 more elements
A method of manufacturing a common mode filter, the method comprising:
- preparing a core insulating layer having metal layers laminated on both surfaces thereof;
- performing half etching on the remainder region with exception of a region forming an external electrode terminal in the metal layers;
- selectively etching the metal layers of the half etched region to form a coil electrode;
- forming a connection electrode connecting the external electrode terminals to each other formed to face both surfaces of the core insulating layer;
- and
- forming an external insulating layer covering a surface of the core insulating layer.
3 more elements
Dependencies are inferred from the claim text.