公开(公告)号：US11948748B2

公开(公告)日：2024-04-02

申请号：US17743598

申请日：2022-05-13

Applicant: Murata Manufacturing Co., Ltd. ,  Shizuki Electric Co., Inc.

Inventor： Tomoki Inakura ,  Tomomichi Ichikawa ,  Atsushi Kawabata

IPC: H01G4/14 ,  C08G18/48 ,  C08G18/76 ,  H01G4/232 ,  H01G4/248 ,  H01G4/32 ,  H01G4/33

CPC classification number: H01G4/14 ,  C08G18/48 ,  C08G18/7692 ,  H01G4/32 ,  H01G4/33 ,  H01G4/232 ,  H01G4/248

Abstract: A film capacitor that includes a dielectric resin film containing a cured product of a first organic material and a second organic material; and a metal layer on at least one surface of the dielectric resin film. The first organic material contains an organic polymer having a hydroxy group and a benzene ring in a repeating unit; the second organic material contains 4,4′-diphenylmethane diisocyanate, a modified product of 4,4′-diphenylmethane diisocyanate, or a mixture thereof; and 400 ppm to 700 ppm of chlorine ions and 300 ppm to 500 ppm of phosphorus ions are present inside the dielectric resin film.