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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9824700 B1

PDFFull Text
Date of Patent:
Nov. 21, 2017

Filed:

May. 23, 2016

Manufacturing method for a magnetic head including a main pole and a write shield

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Hiroki Aritomo, Tokyo, JP;

Atsushi Yamaguchi, Tokyo, JP;

Michitaka Nishiyama, Tokyo, JP;

Yumiko Yokoyama, Tokyo, JP;

Koichi Otani, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Stephanie Duclair

Int. Cl.
CPC ...
H01L 21/302 (2006.01); H01L 21/461 (2006.01); H01G 4/00 (2006.01); H01G 5/00 (2006.01); H01G 7/00 (2006.01); H01G 9/00 (2006.01); H01G 13/00 (2013.01); H01B 13/00 (2006.01); B44C 1/22 (2006.01); C03C 15/00 (2006.01); C03C 25/68 (2006.01); C23F 1/00 (2006.01); G11B 5/127 (2006.01); G11B 5/11 (2006.01); G11B 5/39 (2006.01); H01L 21/027 (2006.01); H01L 45/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/1272 (2013.01); G11B 5/112 (2013.01); G11B 5/1278 (2013.01); G11B 5/3912 (2013.01); H01L 21/027 (2013.01); H01L 45/1675 (2013.01); H01L 45/1683 (2013.01); H01L 45/1691 (2013.01);
Abstract

A manufacturing method for a magnetic head forms a leading shield having a top surface. The top surface of the leading shield includes first and second portions. The second portion is located farther from a medium facing surface than is the first portion, and recessed from the first portion. A first gap layer is then formed on the first portion. Then, a magnetic layer including an initial first side shield, an initial second side shield and a coupling section connecting them is formed using a mold. The mold is then removed. The coupling section is then removed by etching the magnetic layer. A second gap layer and a main pole are then formed in this order.

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