Capacitor, electric circuit, circuit board, and apparatus

Patent metadata

Field	Value
Publication number	US-2025087425-A1
Application number	US-202418960908-A
Country	US
Kind code	A1
Filing date	Nov 26, 2024
Priority date	May 31, 2022
Publication date	Mar 13, 2025
Grant date	—

Abstract

A capacitor includes a first electrode, a second electrode, and a dielectric. The dielectric is disposed between the first electrode and the second electrode. The dielectric includes a compound having an inverted perovskite structure. The inverted perovskite structure of this compound has a portion in which a cation is present at each vertex of corner-sharing octahedra and an anion is present at a center of each of the corner-sharing octahedra.

First claim

What is claimed is:

1 . A capacitor comprising:
a first electrode; a second electrode; and a dielectric disposed between the first electrode and the second electrode, wherein the dielectric includes a compound having an inverted perovskite structure, and the inverted perovskite structure has a portion in which a cation is present at each vertex of corner-sharing octahedra and an anion is present at a center of each of the corner-sharing octahedra.

2 . The capacitor according to claim 1 , wherein
the compound includes an ion of an element in at least one group selected from the group consisting of Group 13, Group 14, and Group 15.

3 . The capacitor according to claim 2 , wherein p 1 the ion has a lone pair.

4 . The capacitor according to claim 1 , wherein p 1 the compound includes at least one selected from the group consisting of In + , Tl + , Ge 2+ , Sn 2 + , Pb 2+ , Sb 3+ , and Bi 3+ .

5 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DE 2 Q 5 , where D and E are each a cation, and Q is an anion.

6 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DE 2 Q 4 R, where D and E are each a cation, and Q and R are each an anion.

7 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DEGQ 5 , where D, E, and G are each a cation, and Q is an anion.

8 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DEGQ 4 R, where D, E, and G are each a cation, and Q and R are each an anion.

9 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DEG 4 Q 10 , where D, E, and G are each a cation, and Q is an anion.

10 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DEG 4 Q 8 R 2 , where D, E, and G are each a cation, and Q and R are each an anion.

11 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by D 3 EQ 5 , where D and E are each a cation, and Q is an anion.

12 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by D 3 EQ 4 R, where D and E are each a cation, and Q and R are each an anion.

13 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DE 2 GQ 5 , where D, E, and G are each a cation, and Q is an anion.

14 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by D 6 EQ 10 , where D and E are each a cation, and Q is an anion.

15 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by D 6 EQ 8 R 2 , where D and E are each a cation, and Q and R are each an anion.

16 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by D 2 E 4 GQ 5 , where D, E, and G are each a cation, and Q is an anion.

17 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by DE 2 GQ 4 R, where D, E, and G are each a cation, and Q and R are each an anion.

18 . The capacitor according to claim 1 , wherein the compound has a composition represented by D 2 E 4 GQ 8 R 2 , where D, E, and G are each a cation, and Q and R are each an anion.

19 . The capacitor according to claim 1 , wherein p 1 the compound has a composition represented by D 2 E 4 Q 7 , where D and E are each a cation, and Q is an anion.

20 . An electrical circuit comprising the capacitor according to claim 1 .

21 . A circuit board comprising the capacitor according to claim 1 .

22 . An apparatus comprising the capacitor according to claim 1 .

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Yokoyama Tomoyasu
• OHURA Kosei
• Kikuchi Ryosuke

Classifications

• H01G4/33

  Thin- or thick-film capacitors {(thin- or thick-film circuits; capacitors without a potential-jump or surface barrier specially adapted for integrated circuits, details thereof, multistep manufacturing processes therefor)} · CPC title

• H01G9/07 Primary

  Dielectric layers · CPC title

• H01G4/08

  Inorganic dielectrics · CPC title