公开(公告)号：US20230011429A1

公开(公告)日：2023-01-12

申请号：US17783720

申请日：2020-12-07

Applicant: KYOCERA Corporation

Inventor： Youichi YAMAZAKI

IPC: H01G4/14 ,  H01G4/32 ,  H01G4/30 ,  H01G4/33 ,  H01G4/38 ,  H02M7/5387 ,  H02P27/06 ,  C08J5/18

Abstract: A dielectric film includes a substrate being a film including a resin material, and a plurality of microscopic members on a first surface of the substrate. Each of the plurality of microscopic members includes a first portion spaced from the first surface, and a second portion extending from the first surface and supporting the first portion.

公开(公告)号：US20190172642A1

公开(公告)日：2019-06-06

申请号：US16256719

申请日：2019-01-24

Applicant: KYOCERA Corporation

Inventor： Youichi YAMAZAKI ,  Naoki KIKUCHI ,  Yoshihiro NAKAO

IPC: H01G4/18 ,  H01G4/33 ,  H01G4/32 ,  H02M7/5387

Abstract: A film capacitor includes a main body portion and external electrodes. The main body portion includes a dielectric film and a metal film that is disposed on one surface of the dielectric film. The metal film has surface roughnesses of S1 and S2 where S1 denotes a surface roughness of the metal film in a first direction, and S2 denotes a surface roughness of the metal film in a second direction. The first direction is perpendicular to the second direction. S1 is greater than S2. The main body portion includes a pair of ends in the first direction thereof. The external electrodes are disposed on the pair of ends in the first direction of the main body portion, respectively. An average value of fractal dimensions of irregularity boundary lines due to wrinkles of the metal film is 1.08 or more.

公开(公告)号：US20180269002A1

公开(公告)日：2018-09-20

申请号：US15761890

申请日：2016-09-21

Applicant: KYOCERA Corporation

Inventor： Youichi YAMAZAKI ,  Yoshihiro NAKAO

IPC: H01G4/33 ,  H01G4/18 ,  H01G9/048 ,  H01G4/005 ,  H01G4/32 ,  H01G13/02 ,  H02M7/00 ,  H02M7/5387 ,  H02P27/06 ,  B60L11/18 ,  B60K6/28

CPC classification number: H01G4/33 ,  B60K6/28 ,  B60L50/51 ,  H01G4/005 ,  H01G4/18 ,  H01G4/32 ,  H01G4/38 ,  H01G4/40 ,  H01G9/048 ,  H01G13/02 ,  H02M7/003 ,  H02M7/5387 ,  H02P27/06 ,  Y02T10/642 ,  Y02T10/7005

Abstract: A film capacitor includes a body including a core body formed of an insulating material and metalized films which are wound around the core body; and first and second terminal electrodes disposed on both end surfaces in an axial direction of the body, respectively, a cross section perpendicular to an axial direction, i.e., z direction, of the core body having an oval outer periphery having a major axis and a minor axis, and an inner periphery defining a slit extending along the major axis. The provision of the core body makes it possible to suppress loosening of the metalized films or occurrence of a gap between the metalized films, thus making the film capacitor having a high insulation property.