Manufacturing method for laminated electronic component

Patent metadata

Field	Value
Publication number	US-9922765-B2
Application number	US-201414520386-A
Country	US
Kind code	B2
Filing date	Oct 22, 2014
Priority date	Oct 28, 2013
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

In a method of manufacturing a laminated electronic component, in a step of obtaining a laminate, a position of a second green sheet with respect to a first green sheet is determined such that an overall width of a first portion printed on the first green sheet and a second portion printed on the second green sheet becomes substantially equal to a width of the first portion or a width of the second portion.

First claim

What is claimed is:

1. A method of manufacturing a laminated electronic component including an electronic component main body, a plurality of terminal electrodes disposed on external surfaces of the component main body, and first and second inner electrodes laminated in one direction in the electronic component main body, the first inner electrode including a first facing portion that faces in the one direction the second inner electrode, and the second inner electrode including a second facing portion that faces in the one direction the first facing portion, the method comprising:
preparing a plurality of green sheets on which both a first conductive film that configures the first inner electrode and a second conductive film that configures the second inner electrode are printed;
obtaining a laminate by laminating the plurality of green sheets such that the first conductive film formed on a first green sheet among the plurality of green sheets and the second conductive film formed on a second green sheet positioned on the first green sheet overlap each other; and
producing the laminated electronic component from the laminate; wherein
the step of preparing the plurality of green sheets includes forming the first and second conductive films on the green sheets such that, out of the first conductive film, a width of a first portion that configures the first facing portion, and, out of the second conductive film, a width of a second portion that configures the second facing portion become substantially identical;
the first and second conductive films are connected to the plurality of terminal electrodes such that a shape of the first conductive film is different from a shape of the second conductive film; and
the step of obtaining the laminate includes determining a position of the second green sheet with respect to the first green sheet such that an overall width of the first portion formed on the first green sheet and the second portion formed on the second green sheet becomes substantially equal to the width of the first portion or the width of the second portion.

2. The method according to claim 1 , wherein the first conductive film includes a plurality of first conductive films, and the plurality of first conductive films are formed in one direction on the green sheets; and the second conductive film includes a plurality of second conductive films, and the plurality of second conductive films are formed in the one direction on the green sheets.

3. The method according to claim 2 , wherein the plurality of first conductive films are formed in the one direction while being connected with each other, and the first and second conductive films are alternately formed in another direction that is perpendicular or substantially perpendicular to the one direction.

4. The method according to claim 1 , wherein
the second conductive film is formed to include, in addition to the second portion, a protruding portion that protrudes from the second portion toward outside in a width direction; and
the step of producing the laminated electronic component includes producing the laminated electronic component by partitioning the laminate along a cut line that crosses the protruding portion.

5. The method according to claim 1 , wherein
the external surfaces of the electronic component main body includes first and second main surfaces, first and second side surfaces that face each other, and third and fourth side surfaces that face each other;
the first inner electrode is extended to the first and second side surfaces; and
the second inner electrode is extended to the third and fourth side surfaces.

6. The method according to claim 1 , wherein the first and second conductive films are printed along an edge in a width direction of the first and second conductive films.

7. The method according to claim 1 , wherein the first and second conductive films are formed by gravure printing.

8. The method according to claim 1 , wherein
the step of preparing the plurality of green sheets includes obtaining the plurality of green sheets on which the first and second conductive films are printed by printing the first and second conductive films to obtain a mother laminate that configures the plurality of green sheets in one direction, and then cutting the mother laminate; and
the step of obtaining the laminate includes obtaining the laminate by laminating the second green sheet positioned on the first green sheet while displacing the second green sheet from the first green sheet in a direction perpendicular or substantially perpendicular to the one direction such that the first conductive film and the second conductive film overlap each other.

9. The method according to claim 1 , wherein the laminated electronic component is a laminated feedthrough capacitor.

10. The method according to claim 1 , wherein the external surfaces of the electronic component main body includes first and second main surfaces and the one direction is one of a length direction and a width direction of the first and second main surfaces.

11. The method according to claim 1 , wherein a ratio of the width of the second portion to the width of the first portion is about 0.9 to about 1.1.

12. The method according to claim 1 , further comprising the step of measuring whether an overall width of the first portion formed on the first green sheet and the second portion formed on the second green sheet becomes substantially equal to the width of the first portion or the width of the second portion, and if the overall width of the first portion formed on the first green sheet and the second portion formed on the second green sheet becomes substantially equal to the width of the first portion or the width of the second portion, adjusting positions of the green sheets to be laminated until the overall width of the first portion formed on the first green sheet and the second portion formed on the second green sheet becomes substantially equal to the width of the first portion or the width of the second portion.

13. The method according to claim 1 , further comprising step of determining a position of the second green sheet with respect to the first green sheet that is performed by printing alignment marks on the green sheets and positioning the green sheets using the alignment marks.

14. The method according to claim 1 , wherein the laminated electrode component is a four-terminal laminated feedthrough capacitor and the external surfaces of the electronic component main body includes first and second main surfaces, first and second side surfaces that face each other, and third and fourth side surfaces that face each other.

15. The method according to claim 14 , wherein the first inner electrode extends to the first and second side surfaces, and the second inner electrode extends to the third and fourth side surfaces.

16. The method according to claim 14 , wherein the first inner electrode extends only to the first side surface, and the second inner electrode extends only to the second side surface.

Assignees

• Murata Manufacturing Co

Inventors

• Sawada Takashi

Classifications

• Y10T156/1062

  Prior to assembly · CPC title

• Y10T29/435

  Solid dielectric type · CPC title

• B32B2038/045

  Slitting · CPC title

• H01G4/308

  made by transfer techniques · CPC title

• Y10T29/43

  Electric condenser making · CPC title