Electronic component

Patent metadata

Field	Value
Publication number	US-10116278-B2
Application number	US-201715401149-A
Country	US
Kind code	B2
Filing date	Jan 9, 2017
Priority date	Feb 5, 2016
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

An electronic component including a substrate, a capacitor lower electrode disposed on the substrate, an inorganic dielectric layer disposed on the substrate to cover the lower electrode, a capacitor upper electrode disposed directly on the inorganic dielectric layer and facing the lower electrode via the inorganic dielectric layer, and a coil electrically connected to the lower electrode or the upper electrode. The upper surface of the inorganic dielectric layer is flat.

First claim

The invention claimed is:

1. An electronic component comprising:
a substrate;
a capacitor lower electrode disposed on the substrate;
a purely inorganic dielectric layer disposed on the substrate to cover the capacitor lower electrode;
a capacitor upper electrode disposed directly on the purely inorganic dielectric layer and facing the capacitor lower electrode via the purely inorganic dielectric layer; and
a coil electrically connected to the capacitor lower electrode or the capacitor upper electrode, wherein
a portion of the purely inorganic dielectric layer covers an upper surface of the capacitor lower electrode and extends over an edge of the capacitor lower electrode and downward along a side of the capacitor lower electrode, an upper surface of an entirety of the portion is flat.

2. The electronic component according to claim 1 , wherein the purely inorganic dielectric layer contains an inorganic dielectric material and a glass material having a softening point lower than a softening point of the inorganic dielectric material.

3. The electronic component according to claim 2 , wherein a ratio of the glass material contained in the purely inorganic dielectric layer is 15 wt % or more and 35 wt % or less.

4. The electronic component according to claim 1 , wherein
at least a portion of the coil is disposed on the same layer as the capacitor lower electrode,
the purely inorganic dielectric layer covers the capacitor lower electrode and the at least a portion of the coil, and
the upper surface of the entirety of the portion of the purely inorganic dielectric layer is located at a position higher than the upper surface of the capacitor lower electrode.

Assignees

• Murata Manufacturing Co

Inventors

• Kudo Hayami
• Nishiyama Kenji
• Okura Ryo

Classifications

• H01F27/40

  Structural association with built-in electric component, e.g. fuse · CPC title

• H01F27/2804

  Printed windings · CPC title

• H01G4/012

  Form of non-self-supporting electrodes · CPC title

• H03H2001/0085

  Multilayer, e.g. LTCC, HTCC, green sheets · CPC title

• H03H7/0115 Primary

  comprising only inductors and capacitors (H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence) · CPC title