# US 2013/0152379 A1 · Method of manufacturing noise removing filter

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- Number: US 2013/0152379 A1
- Document ID: US20130152379A1
- Status: Published application
- Kind: A1
- Application number: 13/716,841
- Filed: 2012-12-17
- Published: 2013-06-20
- Earliest claimed: 2011-12-19
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Sang Moon LEE; Sung Kwon WI; Jeong Bok KWAK; Won Chul SIM; Young Seuck YOO; Yong Suk KIM
- Web page: https://patentgrep.com/patent/US20130152379A1

## CPC

- H03H 3/00: Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- G11B 5/3163: {Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers}
- H03H 1/0007: {of radio frequency interference filters}
- H03H 2001/0092: {Inductor filters, i.e. inductors whose parasitic capacitance is of relevance to consider it as filter}
- Y10T 29/49002: Electrical device making
- Y10T 29/49005: Acoustic transducer
- Y10T 29/4902: Electromagnet, transformer or inductor
- Y10T 29/49044: Plural magnetic deposition layers
- Y10T 29/49046: with etching or machining of magnetic material
- Y10T 29/49048: Machining magnetic material [e.g., grinding, etching, polishing]
- Y10T 29/49069: Data storage inductor or core
- Y10T 29/49075: including permanent magnet or core
- Y10T 29/49117: Conductor or circuit manufacturing
- Y10T 29/49147: Assembling terminal to base
- Y10T 29/49169: Assembling electrical component directly to terminal or elongated conductor
- H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P)
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Disclosed herein is a method of manufacturing a noise removing filter, including preparing at least one conductive pattern, an insulating layer for covering the at least one conductive pattern, and a lower magnetic body including input/output stud terminals for electrically inputting and outputting electricity to and from the at least one conductive pattern; disposing a recognizable portion on upper surfaces of the input/output stud terminals; disposing an upper magnetic body on the recognizable portion and the insulating layer; polishing the upper magnetic body; and removing the recognizable portion such that a level of an upper surface of the upper magnetic body is higher than levels of the upper surfaces of the input/output stud terminals.

## Claims

### Claim 1

A method of manufacturing a noise removing filter, comprising:
preparing at least one conductive pattern, an insulating layer for covering the at least one conductive pattern, and a lower magnetic body comprising input/output stud terminals for electrically inputting and outputting electricity to and from the at least one conductive pattern;
disposing a recognizable portion on upper surfaces of the input/output stud terminals;
disposing an upper magnetic body on the recognizable portion and the insulating layer;
polishing the upper magnetic body; and
removing the recognizable portion such that a level of an upper surface of the upper magnetic body is higher than levels of the upper surfaces of the input/output stud terminals.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the recognizable portion comprises a recognizable material, and the recognizable material is offset-printed on the upper surfaces of the input/output stud terminals.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the recognizable material comprises photoresist.

### Claim 4 (depends on 2)

The method according to claim 2, wherein the offset-printing is performed by printing the recognizable material on the upper surfaces of the input/output stud terminals while rotating a cylinder having an outer circumference surface on which the recognizable material is transferred.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the polishing of the upper magnetic body is performed until the recognizable portion is exposed to the outside.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the removing of the recognizable portion is performed by an etching process.