JPH0837129A - Production of monolithic electronic parts - Google Patents

Abstract

PURPOSE:To efficiently produce a monolithic electronic part of three-terminal type by using an electrode added with one kind of electrode pattern. CONSTITUTION:A dielectric sheet 13 is provided with a plurality of first electrode patterns 11 for first internal electrode that are prepared approximately in parallel at a specified interval and a plurality of second electrode patterns 12 for second internal electrodes are prepared facing each other with the pattern 11 in between, and the length L of the pattern 12 in a direction perpendicular to the pattern 11 is approximately the same as the length of a gap G between the facing patterns 12 with the pattern 11 interposed therein. Therefore, the sheet 13 is plurally stacked to form a multilayered block at such a specified position that the patterns 11 and 12 may be allowed to construct first and second internal electrodes in respective electronic parts, and the respective electronic part elements are cut off by cutting the sheets 13 at the specified positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an electronic component, and more particularly to a method of manufacturing a three-terminal type laminated electronic component.

[0002]

2. Description of the Related Art A monolithic ceramic capacitor (a three-terminal type monolithic ceramic capacitor in this example), which is one of typical monolithic electronic components, has a dielectric layer 33 as shown in FIGS. 4 and 5, for example. A structure in which an electrode for grounding (earth electrode) 31 and an electrode for forming capacitance (capacitance electrode) 32 are alternately laminated, and dummy layers (sheets on which electrodes are not formed) 34 are laminated above and below. Laminated element 3 having
5, the external electrodes 6a, which are electrically connected to the capacitive electrode 32,
6b (FIG. 4) and a structure in which a grounding external electrode 7 (FIG. 4) that is electrically connected to the grounding electrode 31 is arranged so as to surround the central portion of the laminated element 35. .

By the way, in the case of manufacturing a three-terminal type monolithic ceramic capacitor having the above structure, FIG.
As shown in (a) and (b), a first dielectric sheet for forming a dielectric layer (ceramic green sheet) in which a plurality of first electrode patterns 21 for forming a ground electrode are formed in a predetermined direction. 2 and a second dielectric sheet (ceramic green sheet) 24 in which a plurality of second electrode patterns (ground patterns) 22 for forming capacitive electrodes are formed in a direction orthogonal to the first electrode pattern 21. Dielectric sheets (electrode sheets) of different types are prepared, the two types of dielectric sheets 23 and 24 are alternately laminated to form a laminated block (not shown), which is cut at a predetermined position, After firing the cut-out individual laminated elements, the external electrodes 6a, 6b,
By forming 7 and 7, a three-terminal type laminated electronic component as shown in FIG. 4 is manufactured.

[0004]

By the way, as described above, in the case of manufacturing a three-terminal type laminated electronic component using the two types of dielectric sheets 23 and 24,

First and second electrode patterns 21, 22
Must be printed on different dielectric sheets 23 and 24, and it takes time and labor to change the print setup for that purpose. The first dielectric sheet 23 and the second dielectric sheet 23 on which the first electrode pattern 21 is formed are time-consuming. It is necessary to confirm that the second dielectric sheets 24 having the electrode patterns 22 are alternately laminated, and there is a problem that it is costly to reliably monitor the second dielectric sheets 24. .

The present invention solves the above problems and is capable of efficiently manufacturing a three-terminal type laminated electronic component using a dielectric sheet provided with one kind of electrode pattern. An object is to provide a method of manufacturing a component.

[0007]

In order to achieve the above-mentioned object, a method of manufacturing a laminated electronic component according to the present invention comprises a first internal electrode extending from one end to the other end and the first internal electrode. Three-terminal type stacked electron having a structure in which second internal electrodes formed in a direction substantially orthogonal to the internal electrodes of the above and extending from one end to the other end are alternately stacked via a dielectric layer. In the method of manufacturing a component, a plurality of first electrode patterns, which are first internal electrodes of the multilayer electronic component, are arranged substantially parallel to each other at a predetermined interval, and the first electrode pattern is A plurality of second electrode patterns serving as the second internal electrodes of the laminated electronic component are arranged at a predetermined pitch at positions facing each other and the first electrode of the second electrode pattern is provided.
Forming a dielectric sheet whose length in the direction orthogonal to the electrode pattern is substantially the same as the interval between two second electrode patterns facing each other across the first electrode pattern; When the individual electronic component elements are cut out by laminating a plurality of sheets and cutting the sheets at predetermined positions, the first and second electrode patterns have the first and second electrode patterns in the individual electronic component elements. The first electrode pattern of one of the dielectric sheets adjacent to each other forms the second electrode pattern of the other dielectric sheet so as to form the internal electrode, and the one dielectric sheet of the other dielectric sheet. A plurality of dielectric sheets are laminated in a predetermined positional relationship so that the second electrode pattern of the sheet overlaps the first electrode pattern of the other dielectric sheet in a state of being orthogonal to each other through the dielectric sheet. To do And an individual electronic component having a structure in which the first and second internal electrodes are alternately laminated with a dielectric layer interposed therebetween by cutting the laminated block at a predetermined position. And a step of cutting out the element.

In addition, of the first and second internal electrodes, the internal electrode that serves as a ground electrode is composed of two substantially parallel electrodes that are close to each other, and Either one of the first and second electrode patterns is the above-mentioned 2
It is characterized in that it is composed of two substantially parallel electrodes arranged close to each other so that an internal electrode composed of two substantially parallel electrodes can be composed.

[0009]

In the method of manufacturing a laminated electronic component of the present invention,
A plurality of dielectric sheets provided with the first and second electrode patterns satisfying the predetermined requirements are laminated in the predetermined mode, and cut at predetermined positions to cut out individual electronic component elements. As a result, the first and second electrode patterns become the first and second internal electrodes of each electronic component element. Therefore, a three-terminal structure having a structure in which a first internal electrode and a second internal electrode orthogonal to the first internal electrode are alternately laminated using a dielectric sheet provided with one type of electrode pattern It becomes possible to efficiently manufacture a laminated electronic component of a mold.

In the method for manufacturing a laminated electronic component of the present invention, any one of the first and second electrode patterns of the dielectric sheet is used as the first internal electrode of the laminated electronic component, and the other is the first internal electrode. It is possible to have two internal electrodes. In the laminated electronic component, one of the first and second internal electrodes may be, for example, a capacitance forming electrode (capacitance electrode), and the other may be an earth electrode (earth electrode). it can.

Further, by constructing either one of the first and second electrode patterns from two substantially parallel electrodes arranged close to each other, two substantially parallel electrodes ( It becomes possible to manufacture a laminated electronic component having an internal electrode composed of divided electrodes. Note that, for example, in a three-terminal type multilayer capacitor having a ground electrode (internal electrode) that is a divided electrode formed of two substantially parallel electrodes, an effect of improving noise removal performance can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIGS. 3 and 4, the ground electrode (ground electrode) 1 and the capacitance forming electrode (capacitance electrode) 2 are alternately arranged via the dielectric layer 3. External electrodes 6a and 6b (FIG. 4) that are electrically connected to the capacitor electrode 2 are provided on both end sides of a laminated element 5 that has a structure in which dummy layers (sheets on which electrodes are not formed) 4 are laminated one above the other. A grounding external electrode 7 which is disposed and which is electrically connected to the grounding electrode 1 so as to go around the central portion of the multilayer element 5
A case of manufacturing a three-terminal type laminated electronic component having a structure in which (FIG. 4) is arranged will be described as an example.

FIG. 1 shows a dielectric sheet (electrode sheet) used to manufacture a laminated electronic component (a three-terminal type laminated ceramic capacitor in this embodiment) in this embodiment.
FIG.

The dielectric sheet (electrode sheet) 13 (FIG. 1) used in this example is a ceramic green sheet 14.
The first of the multilayer ceramic capacitors (multilayer electronic components)
A plurality of first electrode patterns 11 composed of two parallel strip-shaped electrodes 11a and 11b which will be internal electrodes (ground electrodes) 1 of the first electrode pattern 11 are arranged substantially parallel to each other at a predetermined interval. By arranging a plurality of second electrode patterns 12 to be the second internal electrodes (capacitor electrodes in this embodiment) 2 of the laminated electronic component at a predetermined pitch, at positions facing each other across the pattern 11. The length L of the formed second electrode pattern 12 in the direction orthogonal to the first electrode pattern 11 is equal to that of the two second electrode patterns 12 that face each other across the first electrode pattern 11. It is configured to be substantially the same as the gap (gap) G.

Then, as shown in FIG. 2, when the relative positions of the first and second electrode patterns 11 and 12 of the dielectric sheets 13 and 13 (13a) adjacent to each other are examined, the second electrode pattern is formed. The position of 12 is in a direction substantially orthogonal to the first electrode pattern 11 (in the direction of arrow A or B).
And the dielectric sheet is alternately displaced by a distance L (that is, substantially the same distance as a gap G between two second electrode patterns 12 that face each other across the first electrode pattern 11). The first electrode pattern 11 formed on one dielectric sheet 13 (or 13 (13a)) by alternately laminating a plurality of 13 and 13 (13a)
But the adjacent dielectric sheet 13 (or 13 (13
a)) so as to be orthogonal to the second electrode pattern 12 formed on the dielectric sheet 13 (or 13 (13
a)), and a laminated block (not shown) having a structure (see FIG. 3) in which they face each other and are alternately repeated in the laminating direction.

The dielectric sheets 13 and 13 (13
As a method of stacking a) by alternately shifting the positions,
A method of shifting the dielectric sheet itself by a distance L, or a first and second electrode pattern 11 so that the dielectric sheet 13 or 13 (13a) has a predetermined positional relationship when rotated by 180 °, for example. , 12 are arranged at predetermined positions, and each of the dielectric sheets 13, 13 (13a) is rotated by 180 ° and laminated for each layer.
Various methods can be used.

Then, by cutting the laminated block at a predetermined position (positions shown by lines C and D in FIG. 2), as shown in FIG. 3, a first portion from one end to the other end is obtained.
Internal electrodes 1 and second internal electrodes 2 formed in a direction substantially orthogonal to the first internal electrode 1 and extending from one end to the other end are alternately provided with a dielectric layer 3 interposed therebetween. A laminated element (three-terminal type laminated electronic component element) 5 having a laminated structure is cut out.

After firing the laminated element 5, as shown in FIG. 4, external electrodes 6a and 6b are formed on both ends of the laminated element 5 so as to be electrically connected to the capacitive electrode 2 (FIG. 3), and the laminated element 5 is formed. By arranging the grounding external electrode 7 which is electrically connected to the grounding electrode 1 (FIG. 3) so as to go around the central portion of the circuit 5, a three-terminal type laminated ceramic electronic component can be obtained.

As described above, according to the manufacturing method of this embodiment, the first and second internal electrodes (that is, the ground electrode and the capacitor electrode) are formed by using the dielectric sheet provided with one kind of electrode pattern. It is possible to easily form a laminated block containing a plurality of individual elements each having a structure in which the layers are alternately laminated via a dielectric layer, and cut the laminated block at a predetermined position to form a three-terminal type. The laminated electronic component (3 terminal type laminated ceramic capacitor in this embodiment) can be manufactured easily and efficiently.

Further, in the above embodiment, the first electrode pattern serving as the ground electrode is an electrode pattern comprising two substantially parallel electrodes arranged close to each other.
It becomes possible to easily and efficiently manufacture a laminated electronic component having an internal electrode composed of substantially parallel electrodes (divided electrodes) of a book. In addition, in the three-terminal type multilayer capacitor in which the ground electrode is a divided electrode composed of two substantially parallel electrodes, the effect of improving the noise removal performance can be obtained.

However, the present invention is not limited to the case where the first electrode pattern serving as the ground electrode is a pattern composed of two substantially parallel electrodes arranged close to each other. It is also possible to use a strip-shaped pattern of a book or another pattern.

In the above embodiment, the case of manufacturing a three-terminal type monolithic ceramic capacitor has been described as an example. However, the present invention is not limited to this, and in the case of manufacturing another three-terminal type monolithic electronic component. Can also be applied to.

Further, the present invention can be applied to a method of manufacturing an array type capacitor having a plurality of capacitor parts (capacitance electrodes) in one element and sharing one ground electrode. is there.

The present invention is not limited to the above-mentioned embodiments in other points, and various applications and modifications can be made within the scope of the invention.

[0026]

As described above, in the method for manufacturing a laminated electronic component of the present invention, the dielectric sheet provided with the first and second electrode patterns satisfying the above-mentioned predetermined requirements is provided in a predetermined manner. Since a plurality of laminated sheets are cut and the individual electronic component elements are cut out by cutting them, there is no need to prepare a plurality of dielectric sheets having different electrode patterns as in the conventional case, and the three-terminal type It is possible to efficiently manufacture the above laminated electronic component.

Further, by constructing one of the first and second electrode patterns from two substantially parallel electrodes arranged close to each other, two substantially parallel electrodes ( It becomes possible to manufacture a laminated electronic component having an internal electrode composed of divided electrodes. Therefore, it is possible to efficiently manufacture a three-terminal type multilayer capacitor or the like, which has a ground electrode (internal electrode), which is a divided electrode composed of two substantially parallel electrodes, and which is excellent in noise removal performance.

[Brief description of drawings]

FIG. 1 is a plan view showing a dielectric sheet used for manufacturing a multilayer electronic component (multilayer ceramic capacitor) in an example of the present invention.

FIG. 2 is a plan view showing an overlapping state of electrode patterns when dielectric sheets are laminated in an example of the present invention.

FIG. 3 is an internal electrode (electrode pattern) in each element when dielectric sheets are laminated in an example of the present invention.
FIG. 3 is an exploded perspective view showing an arrangement state of FIG.

FIG. 4 is a perspective view showing an external structure of a three-terminal type multilayer electronic component (multilayer ceramic capacitor).

FIG. 5 is an exploded perspective view showing an arrangement state of internal electrodes of a general three-terminal type multilayer electronic component (multilayer ceramic capacitor).

6A and 6B are plan views showing a dielectric sheet used for manufacturing a conventional laminated electronic component (multilayer ceramic capacitor).

[Explanation of symbols]

 1 1st internal electrode (ground electrode) 2 2nd internal electrode (capacitance electrode) 3 Dielectric layer 5 Laminated elements 6a, 6b External electrode 7 Grounding external electrodes 11a, 11b Strip electrode 11 First electrode pattern 12th 2 electrode pattern 13,13a Dielectric sheet (electrode sheet) 14 Ceramic green sheet

Claims (2)

[Claims] 1. A first internal electrode extending from one end to the other end and a first internal electrode formed in a direction substantially orthogonal to the first internal electrode and extending from one end to the other end. A method of manufacturing a three-terminal type laminated electronic component having a structure in which two internal electrodes are alternately laminated via a dielectric layer, the first electrode being a first internal electrode of the laminated electronic component. A plurality of patterns are arranged substantially parallel to each other at a predetermined interval, and a second internal electrode of the laminated electronic component is provided at a position facing each other across the first electrode pattern. A plurality of electrode patterns of are arranged at a predetermined pitch,
And the dielectric in which the length of the second electrode pattern in the direction orthogonal to the first electrode pattern is substantially the same as the interval between the two second electrode patterns that face each other across the first electrode pattern. A step of forming a sheet, and when cutting out individual electronic component elements by stacking a plurality of the dielectric sheets and cutting at a predetermined position,
The first and second electrode patterns are formed so as to form the first and second internal electrodes in the individual electronic component elements, and the first dielectric sheet of one of the dielectric sheets adjacent to each other is formed. Of the second electrode pattern of the other dielectric sheet and the second electrode pattern of the other dielectric sheet.
By laminating a plurality of dielectric sheets in a predetermined positional relationship so that the electrode pattern of is overlapped with the first electrode pattern of the other dielectric sheet in a state of being orthogonal to each other through the dielectric sheet. A step of forming a block, and by cutting the laminated block at a predetermined position,
And a step of cutting out individual electronic component elements having a structure in which the first and second internal electrodes are alternately laminated with a dielectric layer in between, and a method of manufacturing a laminated electronic component. 2. The one of the first and second internal electrodes, which serves as an electrode for grounding, is composed of two substantially parallel electrodes that are close to each other, and Two substantially parallel electrodes arranged close to each other so that one of the first and second electrode patterns can form an internal electrode composed of the two substantially parallel electrodes. The method for manufacturing a laminated electronic component according to claim 1, wherein