JP4900759B2 - Manufacturing method of multilayer ceramic electronic component - Google Patents

Description

  The present invention relates to a method for manufacturing an electronic component, and more particularly to a method for manufacturing a multilayer ceramic electronic component.

  A multilayer ceramic capacitor, which is one of the typical multilayer ceramic electronic components, includes, for example, a plurality of internal electrodes 52a and 52b stacked in a ceramic element 51 via a ceramic layer 53, as shown in FIG. The internal electrodes 52a and 52b facing each other through the ceramic layer 53 are alternately drawn out to the end faces 54a and 54b on the opposite side of the ceramic element 51 and connected to the external electrodes 55a and 55b formed on the end faces. It has a structure.

  The multilayer ceramic capacitor having such a structure is usually formed by laminating ceramic green sheets having an internal electrode pattern formed on the surface by printing and applying a conductive paste by a method such as a printing method, and on both upper and lower surfaces thereof. A ceramic green sheet (dummy sheet) on which no internal electrode is formed is laminated, pressure-bonded and fired, and then a conductive paste is applied to both end faces of the fired laminate (ceramic element) and baked to form a pair of external electrodes It is manufactured by forming.

  By the way, as the number of stacked internal electrode patterns increases, the level difference between the internal electrode pattern arrangement portion and the surrounding area where the internal electrode pattern is not arranged becomes large, causing a shift in the crimping process, or a poor crimping state. There is a problem that delamination occurs due to uniformity.

  Therefore, after printing the internal electrode pattern on the ceramic green sheet, a ceramic slurry is printed around it, and a method is proposed and implemented to prevent a step between the printed part of the printed pattern and the surrounding part. Has been done.

  In recent years, a method using a gravure printing method has been used from the viewpoint of improving productivity in printing the internal electrode pattern as described above and printing a ceramic slurry around the internal electrode pattern.

For example, as shown in FIG. 10, the gravure printing method includes a gravure roll 61 having a plurality of printing portions 69 (FIG. 11) on the surface, a paste tank 62, a conductor paste 63, a blade 64, a back roll (impression cylinder). In this method, printing is performed using a gravure printing machine 70 having 65 (see Patent Document 1).
Note that the printing unit 69 normally has a mesh configuration in which a plurality of linear grooves 69a are arranged in a grid pattern as shown in FIGS. 12 (a) and 12 (b).
Further, as the gravure roll, as shown in FIG. 13, a gravure roll having a structure including a printing unit 79 formed from a plurality of rectangular recesses (cells) 80 is also used.

  When printing using the gravure printing machine 70, as shown in FIG. 10, for example, a ceramic green sheet 67 supported by a carrier film 66 for sheet conveyance is placed between the gravure roll 61 and the back roll 65. As shown in FIG. 14 (a), the conductive paste held in the printing unit 69 (FIG. 11) on the surface of the gravure roll 61 is transferred to the surface of the ceramic green sheet 67. An internal electrode pattern 68 is formed thereon.

  Then, the ceramic green sheet 67 on which the internal electrode pattern 68 is formed is shown in FIG. 10 used when forming the internal electrode pattern 68 in the region 71 (FIG. 14A) around the internal electrode pattern 68. Using a gravure printer similar to the gravure printer 70, a ceramic paste (ceramic slurry) is printed, and a ceramic paste layer 72 is formed around the internal electrode pattern 68 as shown in FIG. It is possible to suppress or prevent the occurrence of a step between the internal electrode pattern 68 and the surrounding area. 14A and 14B show only the internal electrode pattern 68 for one element and its surrounding area for easy understanding.

By the way, when applying the gravure printing method to the manufacturing method of electronic parts, printing paste such as conductive paste is printed, it is smooth with few irregularities, high linearity stability, high printing shape accuracy In order to form a pattern, in the case of a rectangular printing unit 69 as shown in Patent Document 1, it is desirable that the printing unit 69 has a fine mesh shape, as shown in FIG. In the case of the rectangular printing unit 79 formed from a plurality of rectangular recesses (cells) 80, it is desirable to reduce the size of the cell 80 to form the printing unit 79 from a large number of cells.
In addition, a laser processing method or the like is used for processing the printing part of the gravure roll 61. On this processing method, the cell of the printing part for the internal electrode pattern and the cell of the printing part for the ceramic paste are usually They are set to the same size.

  However, after forming an internal electrode pattern using a gravure printing machine, for example, as shown in FIG. 15, a ceramic paste layer (ceramic slurry) 72 is printed around the internal electrode pattern 68 as a step-resolving paste. When the portion 79 is printed using a gravure roll 61 composed of a large number of small cells 80, the internal electrode pattern 68 formed on the surface of the ceramic green sheet 67 supported by the carrier film 66 is a back roll ( Is pressed by the impression cylinder) 65 and enters the printing portion 79 (specifically, cell 80) on the surface of the gravure roll 61, the shape of the internal electrode pattern 68 is significantly deformed and a crack is generated, and a part of the internal electrode pattern 68 is formed. There is a problem of missing. This also occurs when the printing unit has a fine mesh configuration by arranging a plurality of linear grooves 69a in a lattice shape as shown in FIGS. 12 (a) and 12 (b).

In particular, when the thickness of the carrier film is 50 μm or less and the thickness of the ceramic green sheet is 5 μm or less, deformation due to the pressure from the back roll (impression cylinder) 65 becomes significant, cracks in the internal electrode pattern 68, There is a problem that the loss of the pattern 68 is likely to occur.
JP-A-9-129504

  The present invention solves the above-described problems, and by printing a paste using a gravure printing machine in an area (such as a surrounding area) adjacent to the first paste printing pattern printed on the ceramic green sheet. In the case of forming the second paste print pattern, when the second paste print pattern is printed, the first paste print pattern is prevented from being deformed, and the first paste print pattern is deformed or cracked. To provide a method of manufacturing a multilayer ceramic electronic component capable of efficiently manufacturing a highly reliable multilayer ceramic electronic component by suppressing and preventing the occurrence of a loss of the first paste print pattern resulting therefrom. Let it be an issue.

In order to achieve the above object, a method for manufacturing a multilayer ceramic electronic component of the present invention (Claim 1) includes:
By a gravure printing method using a gravure roll having a printing portion of a predetermined pattern, thickness was formed on the following carrier film 50 [mu] m, the thickness is the print object as the first paste of the following ceramic green sheet 5μm A step of printing a conductive paste to form a first paste print pattern, and printing a ceramic paste as a second paste in a region adjacent to the first paste print pattern to form a second paste print pattern a method of manufacturing a multilayer ceramic electronic component is manufactured through a
When printing the conductive paste as the first paste, the printing unit uses a first gravure roll having a structure including a plurality of recesses for holding the paste in a cross-sectional shape,
When printing the ceramic paste as the second paste , the printing portion has a structure including a plurality of recesses for holding the paste in a cross-sectional shape, and the width of the recesses is the first width. The second gravure roll is larger than the width of the concave portion of the gravure roll.

Moreover, the manufacturing method of the multilayer ceramic electronic component of the present invention (Claim 2) is as follows:
The printing portion of the first gravure roll is configured by a plurality of independent cells having a predetermined planar shape when viewed in plan, and in the cross-sectional shape, the concave portion in which the paste is held Comprising
The printing portion of the second gravure roll is configured by a plurality of independent cells having a predetermined planar shape when viewed in plan, and in the cross-sectional shape, the concave portion where the paste is held It is characterized by comprising.

According to a third aspect of the present invention, there is provided the method for manufacturing a multilayer ceramic electronic component , wherein the second paste print pattern is formed to eliminate a step between the first paste print pattern and a surrounding area. It is a print pattern.

In the manufacturing method of the multilayer ceramic electronic component of the present invention (Claim 1), when the conductive paste is printed as the first paste, the printed portion has a structure including a plurality of recesses for holding the paste in a cross-sectional shape. When printing the ceramic paste as the second paste using the first gravure roll having, the printing section has a structure including a plurality of recesses for holding the paste in the cross-sectional shape, and the recesses Since the second gravure roll whose width is larger than the width of the concave portion of the first gravure roll is used, the first paste print pattern when forming the second paste print pattern (ceramic paste pattern) deformation (conductive paste pattern) is reduced and cracking to the first paste printing pattern becomes possible to prevent the occurrence together , Prevented from missing the first paste printing pattern the crack starting occurs, it is possible to prevent.

That is, when printing the second paste, the printing part has a structure including a plurality of recesses for holding the paste in cross-sectional shape, and the width of the recesses is the width of the recesses of the first gravure roll. By using a second gravure roll larger than the first gravure roll, the degree of deformation or deflection in the vicinity of the ridge line portion of the printing object supported by the ridge line portions (convex portions) at both ends of the concave portion is determined. Compared to the case of using a gravure roll having a concave portion having the same width as the concave portion of the printing portion, it can be made smaller. As a result, it is possible to mitigate deformation of the first paste print pattern, to suppress and prevent the occurrence of cracks, and to suppress and prevent the occurrence of defects in the first paste print pattern starting from the cracks. become.
In the present invention, “the printed portion has a structure having a plurality of recesses for holding the paste in the cross-sectional shape” means that a plurality of straight lines as shown in FIGS. 12 (a) and 12 (b). A mesh-like structure in which the grooves 69a are arranged in a lattice shape, and the recesses are not independent when viewed in a plan view. However, when viewed in cross-section, a structure having a plurality of recesses or a structure shown in FIG. This is a broad concept including a structure in which a printing unit is formed from a plurality of independent cells when viewed in plan.
In addition, by using the first paste as a conductive paste and the second paste as a ceramic paste, for example, a dielectric or magnetic substance around a conductive paste print pattern (first paste print pattern) serving as an internal electrode. It is possible to reliably form a ceramic paste print pattern (second paste print pattern) that becomes an insulator, etc. without causing cracks or missing in the conductive paste print pattern (first paste print pattern). Thus, the present invention can be widely applied to the manufacturing processes of various multilayer ceramic electronic components.
In addition, since the loss of the first paste print pattern is prevented, it is possible to reduce the swell of the material inside the element, and it is possible to greatly reduce the occurrence of voids and breakdown voltage defects. become.

Further, as in the method for manufacturing a multilayer ceramic electronic component of the present invention (Claim 2), when printing the first paste, the printing section is composed of a plurality of cells having a predetermined planar shape, and in cross section, with a first gravure roll having a structure with recesses which paste is held, when printing the second paste is composed of a plurality of cells printed portion has a predetermined planar shape In addition, when the second gravure roll has a structure including a concave portion in which the paste is held in the cross-sectional shape and the width of the concave portion is larger than the width of the concave portion of the first gravure roll. In addition, as in the case of the first aspect of the present invention, the deformation of the first paste print pattern is alleviated and it is possible to prevent the first paste print pattern from cracking. And the occurrence of partial peeling of the first paste print pattern starting from the crack can be suppressed or prevented.

That is, when printing the second paste, as a gravure roll, when the printing unit is viewed in plan, it is composed of a plurality of independent cells having a predetermined planar shape, and in the cross-sectional shape, the cells are By using a second gravure roll that constitutes a recess in which the paste is held and the cell width is larger than the cell width of the first gravure roll, ridge line portions (convex portions) at both ends of the recess The degree of deformation and deflection of the ceramic green sheet supported by the ridge line portion in the vicinity of the ridge line portion, compared to the case of using a gravure roll having a concave portion of the same width as the concave portion of the printed portion of the first gravure roll It becomes possible to make it smaller. As a result, it is possible to mitigate deformation of the first paste print pattern, to suppress and prevent the occurrence of cracks, and to suppress and prevent the occurrence of defects in the first paste print pattern starting from the cracks. become.

Further, as in the method of manufacturing a multilayer ceramic electronic component according to claim 3 , the second paste print pattern is formed to eliminate a step between the first paste print pattern and the surrounding area. In the case of the print pattern, it becomes possible to form the first paste print pattern and the second paste print pattern without causing a step, for example, the first paste print pattern is an internal electrode pattern, When the paste print pattern is a ceramic paste pattern for level difference elimination, it prevents the occurrence of misalignment of internal electrode patterns and poor crimping during lamination and crimping, and has the desired characteristics and reliability. High-efficiency multilayer ceramic electronic components can be efficiently manufactured.

  In the present invention, since the width of the concave portion of the second gravure roll is increased, the number of convex portions on both sides of the concave portion is smaller than that of the first gravure roll. The unevenness formed on the surface of the print pattern will be somewhat larger, but when the second paste print pattern is a paste print pattern for eliminating a step, the unevenness on the surface of the second paste print pattern There is no possibility of greatly affecting the characteristics of the multilayer ceramic electronic component. Further, for example, by performing pressing in a state where heat is applied, the adhesion between the layers can be improved and the occurrence of structural defects can be prevented.

  The features of the present invention will be described in more detail below with reference to examples of the present invention.

  In this embodiment, as shown in FIG. 1, a plurality of internal electrodes 2 a and 2 b are stacked in a ceramic element 1 with a ceramic layer 3 interposed therebetween, and internal electrodes 2 a and 2 facing each other with the ceramic layer 3 interposed therebetween. An example in which a multilayer ceramic capacitor having a structure in which 2b is alternately drawn out to the opposite end faces 4a and 4b of the ceramic element 1 and connected to external electrodes 5a and 5b formed on the end faces will be described. .

FIG. 2A is a diagram showing the gravure printing machine 10 used in the method for manufacturing a ceramic electronic component of Example 1, and FIG. 2B is a schematic view of a gravure roll used in the gravure printing machine 10. It is a perspective view shown.
As shown in FIGS. 2A and 2B, the gravure printing machine 10 includes a gravure roll 12 having a printing unit 11 (FIG. 2B) in a predetermined arrangement, and a paste tank in which a conductive paste 13 is accommodated. 14, a blade 15, and a back roll 16.

And the printing part 11 arrange | positioned by the gravure roll (1st gravure roll) 12 arrange | positions the substantially square cell 17 so that it may become a predetermined arrangement | sequence, as shown to Fig.3 (a). As shown in FIG. 3B, the cross-sectional shape has a plurality of recesses 17a for holding the ceramic paste, and each printing portion 11 should be formed. A shape corresponding to the internal electrode pattern 22 (see FIG. 4) is provided.
3A and 3B show a gravure roll 12 including a printing unit 11 for printing an internal electrode pattern.

  In Example 1, the conductive paste is printed on the surface of the ceramic green sheet (printing object) 23 formed on the carrier film 21 by using the gravure printing machine 10 of FIG. As shown in FIG. 2, an internal electrode pattern (first paste print pattern) 22 having a predetermined shape was formed.

  Then, the ceramic paste is printed on the peripheral region of the internal electrode pattern 22 by using a gravure printing machine having a gravure roll having the same configuration as that of the gravure printing machine of FIG. As a result, as shown in FIG. 4B, a ceramic paste pattern (second paste print pattern) 24 for eliminating the step between the internal electrode pattern 22 and the surrounding area was formed.

  That is, in the first embodiment, when the ceramic paste pattern (second paste print pattern) 24 is formed, as shown in FIG. 5A, the printing unit 11a is formed from a plurality of cells 18 having a predetermined planar shape. As shown in FIG. 5 (b), the cross-sectional shape has a structure including a plurality of recesses 18a for holding the ceramic paste, and the width W2 of the recesses 18a is set to be the first gravure roll 12. The ceramic paste is printed using the second gravure roll 12a larger than the width W1 of the concave portion (FIG. 3B), and the ceramic paste pattern (second paste print pattern) is formed in the peripheral region of the internal electrode pattern 22 24 was formed.

  As shown in FIG. 5B, the second gravure roll 12a is used in which the width W2 of the recess 18a is larger than the width W1 of the recess 17a of the first gravure roll 12 (FIG. 3B). When the ceramic paste 25 (FIG. 6) is printed, the deformation and deflection of the ceramic green sheet 23 supported by the ridge line parts (convex parts) 18b (FIG. 6) at both ends of the concave part 18a in the vicinity of the ridge line part 18b. Can be made smaller than when a gravure roll having a recess having the same width as the width W1 of the recess 17a of the first gravure roll 12 is used. As a result, the deformation of the internal electrode pattern (first paste print pattern) 22 is alleviated to suppress or prevent the internal electrode pattern 22 from being cracked, and the internal electrode pattern 22 is missing from the crack. It is possible to efficiently suppress and prevent the occurrence, and an internal electrode pattern having a ceramic paste pattern (second paste print pattern) 24 in a peripheral region of the internal electrode pattern (first paste print pattern) 22 The internal electrode pattern disposition sheet having no step on the disposition surface 22 can be reliably formed.

Then, the internal electrode pattern-arranged sheets formed as described above were laminated and the carrier film was peeled off, and then the next ceramic green sheet was laminated and the carrier film was peeled repeatedly to laminate a predetermined number of ceramic green sheets. Thereafter, the laminated body was pressure-bonded and cut at a predetermined position to be divided into individual elements (unfired laminated ceramic capacitor elements).
In addition, when laminating ceramic green sheets, a predetermined number of ceramic green sheets for outer layers not provided with internal electrode patterns are disposed on both the upper and lower surfaces of the laminate in which the ceramic green sheets with the internal electrode patterns formed are laminated. Laminated and arranged.

  Then, each divided element was degreased and fired under predetermined conditions, and then a conductive paste for forming an external electrode was applied and baked to obtain a multilayer ceramic capacitor having a structure as shown in FIG.

  As in the first embodiment, by using an internal electrode pattern arrangement sheet having no step between the internal electrode pattern 22 and the surrounding area, a highly reliable multilayer ceramic capacitor having desired characteristics can be efficiently obtained. Can be manufactured well.

As the second gravure roll 12a when printing the ceramic paste pattern (second paste printing pattern) 24, the width W2 of the cell 18 (recessed portion 18a) constituting the printing unit 11a is set to the internal electrode pattern (first The second gravure is set to be twice (160 μm) the width W1 (80 μm) of the cell 17 (recessed portion 17a) constituting the printing unit 11 of the first gravure roll 12 used when printing the paste printing pattern 22). In the case of the method of the embodiment using the roll 12a and the second gravure roll when printing the ceramic paste pattern (second paste print pattern), the width of the cell (recess) is set to the internal electrode pattern (first Of the first gravure roll used to print the paste printing pattern) (80 μm), which is the same as the width of the cell (concave portion) constituting the printed portion of the first gravure roll. For the case of the comparative example of a method using two of the gravure roll, the missing incidence of internal electrode patterns (coating missing incidence), void generation rate, and a withstand voltage failure rate was measured.
The measurement was performed by varying the thickness of the carrier film and the thickness of the ceramic green sheet (element thickness) within the ranges shown in Table 1.
The measurement results are shown in Table 1.

The missing rate of internal electrode patterns in Table 1 (coating missing rate) is a result of examining 1000 printed patterns (internal electrode patterns) using a 100 × microscope.
The void generation rate is the result of examining the number of samples n = 200.
Further, the breakdown voltage failure rate is the result of examining the number of samples n = 100 under the condition of 100V.

From Table 1, the samples (Examples 1 to 6) of the examples of the present invention have a coating film missing rate and a void rate of 0%, and good results can be obtained. confirmed. It was also confirmed that the breakdown voltage failure rate can be kept as low as 3% or less.
This is presumably because the occurrence of swells inside the device was suppressed because the lack of internal electrode patterns (coating missing) was prevented, and the void generation rate and breakdown voltage failure rate were greatly reduced.

  As for the comparative examples, in Comparative Examples 2 to 6 where the film thickness of the carrier film is 50 μm or less and the thickness of the ceramic green sheet is 5 μm or less, the occurrence of coating film loss and the occurrence of voids are observed, and the withstand voltage failure rate is also high. It was confirmed to be high. However, in Comparative Example 1 in which the thickness of the carrier film was 75 μm and the thickness of the ceramic green sheet was 5 μm, no coating film loss or void was observed.

In the present invention, in particular, as a second gravure roll for printing a ceramic paste pattern (second paste printing pattern), in the conveying direction of the ceramic green sheet of the cells (recesses) constituting the printing unit The width W2 in the parallel direction is the width in the direction parallel to the conveying direction of the ceramic green sheet of the cells (concave portions) of the first gravure roll used when printing the internal electrode pattern (first paste printing pattern). When it is larger than W1, the deformation of the internal electrode pattern (first paste print pattern) is efficiently reduced, and the cracks in the internal electrode pattern and the lack of the internal electrode pattern resulting therefrom are more reliably suppressed and prevented. It has been confirmed that it will be possible.
Further, regarding the shape of each cell 18 of the second gravure roll 12a, the width W2 in the direction parallel to the ceramic green sheet conveyance direction is set to the width W3 in the direction perpendicular to the ceramic green sheet conveyance direction (FIG. )) Increases the effect of alleviating the deformation of the internal electrode pattern (first paste print pattern), and more reliably suppresses cracks in the internal electrode pattern and lack of internal electrode patterns resulting therefrom. It has been confirmed that it can be prevented.

  In addition, by making the width W2 of the cell (concave portion) of the second gravure roll larger than the width W1 of the cell (concave portion) of the first gravure roll, the unevenness formed on the surface of the second paste print pattern Although it will be somewhat larger, the second paste print pattern is a paste print pattern for eliminating the step, and is not printed on the capacitance forming portion (effective area portion), so it adversely affects various electrical characteristics. Never give. Further, for example, by performing pressing in a state where heat is applied, the adhesion between the layers can be improved and the occurrence of structural defects can be prevented.

  In the first embodiment, the case where the printing unit includes a plurality of cells has been described as an example. However, as in the conventional example of FIG. 12, the printing unit has a mesh in which a plurality of linear grooves are arranged in a grid pattern. The present invention can also be applied to the case of having a shape-like structure, and in this case as well, it is possible to obtain the same operational effects as in the case of the first embodiment.

  In the first embodiment, the case where the internal electrode pattern (first paste printing pattern) 22 and the ceramic paste pattern (second paste printing pattern) 24 are formed on the ceramic green sheet 23 has been described. As shown in FIG. 7, after the internal electrode pattern (first paste print pattern) 22 is formed on the carrier film 21, a ceramic paste pattern (second paste print pattern) 24 is formed in the surrounding area. It is also possible to configure. Since other configurations are the same as those in the first embodiment, the description thereof is omitted to avoid duplication.

In the case of the method of the second embodiment, the internal electrode pattern (first paste print pattern) 22 printed on the carrier film 21 and the ceramic paste pattern (second paste print pattern) printed in the surrounding area are provided. ) 24 is transferred onto the ceramic green sheet 23 as shown in FIG. 8A, thereby providing the internal electrode pattern 22 and a stepless internal electrode provided with the ceramic paste pattern 24 in the surrounding area. It is possible to reliably form the pattern placement sheet.
Further, as shown in FIG. 8B, the internal electrode pattern (first paste print pattern) 22 printed on the carrier film 21 and the ceramic paste pattern (second paste print pattern) printed on the surrounding area. By applying a ceramic paste on 24 to form a ceramic layer (ceramic green sheet layer) 23a, the carrier film 21 can also be peeled off to form an internal electrode pattern-arranged sheet without steps. .

  Then, by using the internal electrode pattern disposition sheet without a step obtained by the above method, a highly reliable multilayer ceramic capacitor having desired characteristics can be efficiently manufactured as in the case of Example 1. Can do.

  In addition, although Example 1 and 2 demonstrated taking the case where the laminated ceramic capacitor was manufactured as an example, this invention is not only a laminated ceramic capacitor, The process of laminating | stacking the internal electrode pattern arrangement | positioning sheet | seat with which the internal electrode was arrange | positioned Thus, the present invention can be widely applied to various multilayer ceramic electronic parts manufactured through the above process.

  In Examples 1 and 2, the first paste print pattern is an internal electrode pattern made of a conductive paste, and the second paste print pattern is a ceramic paste pattern for eliminating a step made of a ceramic paste. However, in the present invention, there are no particular restrictions on the types of the first paste and the second paste, and it can be widely applied when various pastes are used as the first and second pastes. .

  Further, in the first and second embodiments, the case where the second paste printing pattern is a pattern for eliminating a step has been described. However, the second paste is not intended for eliminating a step but has a different function. The present invention can also be applied to.

  The invention of the present application is not limited to the above embodiment in other points as well, the specific shape of the first and second paste print patterns, the type of print object, the specific configuration of the printing unit, Various applications and modifications can be made within the scope of the invention with respect to the shape of the cells constituting the printing unit.

As described above, according to the present invention, the deformation of the first paste printing pattern when the second paste is printed is alleviated to suppress or prevent the occurrence of cracks, and the first starting from the cracks. It is possible to suppress or prevent the occurrence of a missing paste print pattern.
In addition, since the loss of the first paste print pattern is prevented, it is possible to reduce the swell of the material inside the element, and it is possible to greatly reduce the occurrence of voids and breakdown voltage defects. become.
Furthermore, it is possible to reliably form an internal electrode pattern disposition sheet that has a flat internal electrode pattern disposition surface and is less likely to cause misalignment of internal electrode patterns or poor crimping during lamination and crimping.
Therefore, the present invention can be widely applied to the production of multilayer capacitors such as multilayer ceramic capacitors.

It is sectional drawing which shows the laminated ceramic capacitor manufactured by the method concerning the Example of this invention. (a) is a figure which shows the principal part of the gravure printing machine used in order to implement the manufacturing method of the ceramic electronic component of this invention, (b) is a perspective view which shows the gravure roll which comprises the gravure printing machine of (a). It is. (a) is a perspective view which shows the printing part of the 1st gravure roll which comprises the gravure printing machine used in order to implement the manufacturing method of the ceramic electronic component of this invention, (b) is the sectional drawing. (a) is a perspective view showing a state in which an internal electrode pattern is printed on a ceramic green sheet, and (b) is a perspective view showing a state in which a ceramic paste pattern is printed in a peripheral region of the internal electrode pattern in (a). (a) is a perspective view which shows the printing part of the 2nd gravure roll which comprises the gravure printing machine used in order to implement the manufacturing method of the ceramic electronic component of this invention, (b) is the sectional drawing. It is sectional drawing which shows the state which is printing the ceramic paste as a paste for level | step difference elimination around the internal electrode pattern using the 2nd gravure roll of FIG. In Example 2 of this invention, after forming an internal electrode pattern (1st paste printing pattern) on a carrier film, the perspective view which shows the state which formed the ceramic paste pattern (2nd paste printing pattern) in the surrounding area | region FIG. (a) is sectional drawing which shows the state which transcribe | transferred the internal electrode pattern printed on the carrier film, and the ceramic paste pattern printed in the surrounding area on the ceramic green sheet, (b) is printed on the carrier film FIG. 5 is a cross-sectional view showing a state in which a ceramic layer is formed by applying a ceramic paste on the internal electrode pattern and the ceramic paste pattern. It is sectional drawing which shows the conventional multilayer ceramic capacitor. It is a figure which shows the principal part of the conventional gravure printing machine. It is a perspective view which shows the conventional gravure roll provided with the some printing part on the surface. (a) is a top view which shows the structure of the printing part of the conventional gravure roll, (b) is sectional drawing. It is a figure which shows the other example of the printing part of the conventional gravure roll. (a) is a perspective view showing a state in which an internal electrode pattern is printed on a ceramic green sheet by a conventional method, and (b) is a perspective view showing a state in which a ceramic paste pattern is printed in a peripheral region of the internal electrode pattern in (a). It is. It is sectional drawing which shows the state which printed the ceramic paste for level | step difference elimination around the internal electrode pattern using the conventional gravure roll.

DESCRIPTION OF SYMBOLS 1 Ceramic element 2a, 2b Internal electrode 3 Ceramic layer 4a, 4b End face of ceramic element 5a, 5b External electrode 10 Gravure printing machine 11, 11a Printing part 12 Gravure roll (1st gravure roll)
12a Second gravure roll 13 Conductive paste 14 Paste tank 15 Blade 16 Back roll 17 Cell 17a Recess 18 Cell 18a Recess 18b Ridges (convex) at both ends of the recess
21 Carrier film 22 Internal electrode pattern (first paste printing pattern)
23 Ceramic green sheet (printing object)
23a Ceramic layer (ceramic green sheet layer)
24 Ceramic paste pattern (second paste printing pattern)
25 Ceramic paste W1 Width of concave portion of first gravure roll W2 Width of concave portion of second gravure roll W3 Width of cell (concave portion) perpendicular to conveyance direction of ceramic green sheet

Claims (3)

By a gravure printing method using a gravure roll having a printing portion of a predetermined pattern, thickness was formed on the following carrier film 50 [mu] m, the thickness is the print object as the first paste of the following ceramic green sheet 5μm A step of printing a conductive paste to form a first paste print pattern, and printing a ceramic paste as a second paste in a region adjacent to the first paste print pattern to form a second paste print pattern a method of manufacturing a multilayer ceramic electronic component is manufactured through a
When printing the conductive paste as the first paste, the printing unit uses a first gravure roll having a structure including a plurality of recesses for holding the paste in a cross-sectional shape,
When printing the ceramic paste as the second paste , the printing portion has a structure including a plurality of recesses for holding the paste in a cross-sectional shape, and the width of the recesses is the first width. A method for producing a multilayer ceramic electronic component comprising using a second gravure roll larger than the width of the concave portion of the gravure roll. The printing portion of the first gravure roll is configured by a plurality of independent cells having a predetermined planar shape when viewed in plan, and in the cross-sectional shape, the concave portion in which the paste is held Comprising
The printing portion of the second gravure roll is configured by a plurality of independent cells having a predetermined planar shape when viewed in plan, and in the cross-sectional shape, the concave portion where the paste is held The method for manufacturing a multilayer ceramic electronic component according to claim 1, wherein: 3. The step elimination print pattern formed to eliminate a step between the first paste print pattern and a surrounding area thereof, wherein the second paste print pattern is the step 1 or 2. Manufacturing method for multilayer ceramic electronic parts.

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