公开(公告)号：US20170110251A1

公开(公告)日：2017-04-20

申请号：US15296374

申请日：2016-10-18

Applicant: TDK CORPORATION

Inventor： Hitoshi SAITA ,  Masahiro YAMAKI ,  Yukihiro AZUMA ,  Yoshihiko YANO

IPC: H01G4/33 ,  H01G4/012 ,  H01G4/252 ,  H01G4/008

CPC classification number: H01G4/33 ,  H01G4/008 ,  H01G4/012 ,  H01G4/252 ,  H01L27/11582 ,  H01L28/00 ,  H05K1/162

Abstract: In a thin film capacitor, a first electrode layer 1 has one or more regions B in which a distance Hb between a boundary surface I of the first electrode layer 1 and a dielectric layer 2, and a surface of the first electrode layer 1, becomes maximum, and an outer layer 12 has one or more regions T in which a distance Ht between the boundary surface I and a surface of the outer layer 12 becomes maximum, as well as one or more regions t in which the distance Ht between the boundary surface I and the surface of the outer layer 12 does not become maximum. A projected area SHb, a projected area SHt, and a projected area S, satisfy equations (1) and (2): 60%≦(SHb/S)  (1); 60%≦(SHt/S)  (2).