公开(公告)号：US20170025324A1

公开(公告)日：2017-01-26

申请号：US15217111

申请日：2016-07-22

Applicant: TDK CORPORATION

Inventor： Masahiro YAMAKI ,  Hitoshi SAITA

IPC: H01L23/367 ,  H01G4/12 ,  H01L23/498 ,  H01G2/14 ,  H01L23/00 ,  H01L23/42 ,  H01G4/33 ,  H01G4/005

CPC classification number: H01L23/42 ,  H01G2/14 ,  H01G4/005 ,  H01G4/012 ,  H01G4/1227 ,  H01G4/224 ,  H01G4/33 ,  H01L23/3677 ,  H01L23/49816 ,  H01L23/49822 ,  H01L23/49827 ,  H01L24/16 ,  H01L28/82 ,  H01L28/84 ,  H01L2224/16265 ,  H01L2924/19015 ,  H01L2924/19041 ,  H01L2924/19102

Abstract: The present invention provides a thin film capacitor including a first electrode layer, a second electrode layer, and a dielectric layer provided between the first electrode layer and the second electrode layer, wherein a ratio (S/S0) of a surface area S of a surface of the first electrode layer on an opposite side to the dielectric layer to a projected area S0 in a thickness direction of the first electrode layer is 1.01 to 5.00.

Abstract translation: 本发明提供了一种薄膜电容器，其包括设置在第一电极层和第二电极层之间的第一电极层，第二电极层和电介质层，其中，表面积S的比率（S / S0） 第一电极层的与电介质层相反的一侧的表面与第一电极层的厚度方向上的投影面积S0为1.01〜5.00。

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).