公开(公告)号：US20230115362A1

公开(公告)日：2023-04-13

申请号：US17914280

申请日：2021-03-31

Applicant: TDK CORPORATION

Inventor： Kenji NAGASE ,  Hiroshi TAKE ,  Shingo MIYATA

IPC: G02F1/035 ,  G02F1/03 ,  G02F1/21

Abstract: An electro-optical device, including: a substrate; an optical waveguide composed of an electro-optic material film formed in a ridge shape on the substrate; a buffer layer configured to cover the optical waveguide; and an upper electrode provided on the optical waveguide through the buffer layer, and the buffer layer has a recess on the upper electrode side above the optical waveguide. Accordingly, the propagation loss of light can be suppressed.

公开(公告)号：US20140160597A1

公开(公告)日：2014-06-12

申请号：US13708507

申请日：2012-12-07

Applicant: TDK CORPORATION

Inventor： Norikazu OTA ,  Masahiro SAITO ,  Taro OIKE ,  Takeo KAGAMI ,  Yosuke ANTOKU ,  Kenkichi ANAGAWA ,  Kenta HARA ,  Tetsuro SASAKI ,  Shingo MIYATA ,  Katsuki KURIHARA

IPC: G11B5/11

CPC classification number: G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: A magnetic head includes a main pole, a write shield, and a return path section. The write shield includes first and second shield portions located on opposite sides of the main pole in the track width direction. The return path section includes first and second yoke portions located on opposite sides of the main pole in the track width direction. The first yoke portion is connected to the first shield portion. The second yoke portion is connected to the second shield portion. A coil surrounds at least part of the entire outer periphery of the main pole when viewed from a medium facing surface.

Abstract translation: 磁头包括主极，写屏蔽和返回路径部分。 写屏蔽包括位于主磁极在磁道宽度方向的相对侧上的第一和第二屏蔽部分。 返回路径部分包括在轨道宽度方向上位于主极的相对侧上的第一和第二轭部分。 第一磁轭部分连接到第一屏蔽部分。 第二磁轭部分连接到第二屏蔽部分。 当从面向介质的表面观察时，线圈围绕主极的整个外周的至少一部分。