JP2000182889A - Manufacture of laminate ceramic electronic component, ink for ink jet used therefor and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise the productivity by peeling off a base film from a ceramic green sheet fixed to the base film, and forming a predetermined ink pattern by the ink jet method on the surface of the green sheet from which the base film is peeled off. SOLUTION: The method of manufacturing a laminate ceramic electronic component comprises the step of forming a ceramic green sheet 61 fixed to a base film 60, peeling off the base film 60 from the green sheet 61 to expose a base film surface 62, jetting ink drops 72 on this base film surface 62 by an ink jet apparatus to form a desired ink pattern 81, laminating a desired number of ceramic green sheets 61 with the ink patterns 81 formed on the base film surfaces 62, and pressing them by a press 91 to form a ceramic green laminate, cutting the ceramic laminate into a desired shape, firing it and forming outer electrodes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a multilayer ceramic electronic component such as a multilayer ceramic capacitor and a multilayer piezoelectric element used for various electronic devices, an ink for ink jet used therefor, and a method for manufacturing the same.

[0002]

2. Description of the Related Art As a conventional method of manufacturing a multilayer ceramic electronic component, Japanese Patent Application Laid-Open No. 58-50795 discloses a method in which an electrode pattern is directly formed on a ceramic green sheet by an ink jet method.

Japanese Patent Application Laid-Open No. 9-219339 discloses a method in which a ceramic pattern for eliminating a step is formed on an upper surface of a ceramic green sheet by an ink jet method in order to absorb irregularities of an electrode pattern.

Hereinafter, a conventional method for manufacturing a multilayer ceramic electronic component will be described with reference to the drawings.

FIGS. 14 to 16 are views for explaining formation of a green ceramic sheet, which is a main part of a conventional method for manufacturing a multilayer ceramic electronic component.

First, as shown in FIG. 14, a ceramic slurry 3 obtained by filling a ceramic powder 2 on a base film 1 is adjusted to a predetermined thickness by a coater head 11.
It is sent into the dryer 12. At this time, the solvent component 4 evaporates from the ceramic slurry 3 in the dryer 12.

Next, after passing through the dryer 12, FIG.
As shown in FIG. 2, a ceramic raw sheet 21 fixed to the base film 1 is formed. The ceramic raw sheet 21 has a base film surface 2 in contact with the base film 1.
On the drying surface 23 opposite to the surface 2, an uneven surface due to minute holes, dents and gaps accompanying the drying of the solvent component 4 (not shown in this figure) is formed.

Next, as shown in FIG. 16, ink droplets 41 are applied from the ink jet device 31 toward the dry surface 23 of the raw ceramic sheet 21 to form a desired ink pattern 51. At this time, the ink droplet 41
When landing on the dry surface 23 of the ceramic raw sheet 21, a part of the solvent component in the ink is absorbed into the ceramic raw sheet 21.

[0009]

The ink pattern 51 formed by the conventional ink jet method is formed on the uneven dry surface 23 of the ceramic raw sheet 21 fixed to the base film 1, so that the ceramic raw sheet 2 is formed.
When 1 is thin, there is a problem that a defect such as a short circuit occurs.

The present invention solves the above-mentioned conventional problems, and provides a method for manufacturing a laminated ceramic electronic component having improved quality even when the ceramic green sheet is thin, an ink for ink jet used therefor, and a method for manufacturing the same. The purpose is to do so.

[0011]

According to the present invention, a base film is peeled from a ceramic raw sheet fixedly provided on a base film, and the base film surface of the peeled ceramic raw sheet is formed by an ink jet method. This forms a predetermined ink pattern.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a step of peeling a base film from a ceramic green sheet fixedly provided on the base film, and a step of removing the peeled ceramic raw sheet. After repeating the step of forming a predetermined ink pattern on the base film surface by ink jet a plurality of times, a plurality of the ceramic green sheets on which the ink pattern is formed are laminated to form a ceramic green laminate, and formed into a predetermined shape. Cutting and baking, then forming the external electrode.Even if it is an electrode ink or ceramic ink with a low viscosity or a high solvent content that easily permeates into the printing medium, defects due to ink or solvent permeation are suppressed. Therefore, it has the effect of improving productivity.

According to a second aspect of the present invention, a dry surface of a ceramic green sheet fixed to a base film is pressure-bonded to the surface of a ceramic green laminate with internal electrodes having at least internal electrodes therein. After repeating the step of peeling the base film from the raw sheet and forming a predetermined ink pattern by an ink jet on the base film surface of the peeled ceramic raw sheet a plurality of times, cut into a predetermined shape, and baked, After that, external electrodes are formed.Even if the ink or ceramic ink has a low viscosity or a high content of solvent, which easily permeates into the printing medium, defects due to ink or solvent permeation can be suppressed, improving productivity. It has the effect of doing.

According to a third aspect of the present invention, there is provided a ceramic green laminate with internal electrodes having at least internal electrodes on a pallet, and a surface of the ceramic green laminate with internal electrodes in contact with the pallet. The base film is peeled off from the ceramic raw laminate with internal electrodes, which is pressed on the surface on the opposite side so as to be in contact with the dried surface of the ceramic raw sheet fixed to the base film, and peeled off. Forming a predetermined ink pattern on the base film surface of the ceramic green sheet by an ink jet once or a plurality of times to form a plurality of first ceramic green laminates with internal electrodes. A plurality of ceramic green laminates with internal electrodes are laminated to form a second ceramic green laminate with internal electrodes, and cut into a predetermined shape. Baking and then forming the external electrodes, each process can be carried out in a state fixed to the inner pallet, so that the difference in the drying and curing speed of the ink can be absorbed by the production technology, making it possible to change and improve the production equipment It has an effect that it can be easily performed.

According to a fourth aspect of the present invention, an uneven surface of the ceramic green laminate with internal electrodes is buried in a ceramic green laminate with internal electrodes having an uneven surface on an upper surface and having at least an internal electrode inside. The ceramic raw sheet with the auxiliary pattern correction portion fixed to the base film having the auxiliary pattern correction portion is pressed, and the base film is peeled from the ceramic green laminate with internal electrodes having the ceramic raw sheet with the auxiliary pattern, and peeled. A step of forming a predetermined ink pattern by ink jet on the base film surface of the ceramic raw sheet, cutting and firing into a predetermined shape, and then forming external electrodes, thereby eliminating steps of the ceramic raw sheet at the time of lamination. It has the effect of being able to.

According to a fifth aspect of the present invention, the uneven surface of the ceramic green laminate with internal electrodes is buried in a ceramic green laminate with internal electrodes having an uneven surface on the upper surface and having at least an internal electrode inside. Pressing a base film to which only the auxiliary pattern correcting portion is fixed, peeling the base film from the base film with the auxiliary pattern correcting portion, and forming a predetermined ink pattern by an ink jet on the separated surface; Cutting into shape
After firing, an external electrode is formed, which has the function of preventing the occurrence of unevenness due to the built-in electrode.

The invention described in claim 6 is the first invention.
The step of forming a predetermined ink pattern on the base film surface of the peeled ceramic raw sheet according to any one of the above-mentioned 5 by an ink jet method, wherein different inks are formed on the base film of the ceramic raw sheet by an ink jet. And forming a plurality of predetermined ink patterns using the ceramic sheet. This has an effect of preventing irregularities generated on the upper surface of the ceramic green sheet.

The invention according to claim 7 is the first invention.
5. The step of forming a predetermined ink pattern on the base film surface of the peeled ceramic green sheet by an ink jet according to any one of the above 5), wherein the predetermined first ink pattern is formed on the base film of the ceramic raw sheet by an ink jet. Forming a second ink pattern on the base film of the ceramic raw sheet by an ink jet so as to cover the first ink pattern after the formation of the ink pattern. Has the effect of preventing the occurrence of irregularities.

The invention described in claim 8 is the first invention.
5. The step of forming a ceramic green laminate by laminating a plurality of ceramic raw sheets each having an ink pattern according to any one of the above items 5 to 5 includes laminating a plurality of ceramic raw sheets each having an ink pattern formed on the upper surface of a pallet And forming a plurality of first ceramic green laminates, and then laminating the first ceramic green laminate with a plurality of sheets to form a second ceramic green laminate. It has the effect of improving.

The invention according to claim 9 is characterized in that an organic solvent or water, a metal powder having an average particle size of 0.001 to 3 μm and 1 to 60% by weight dispersed in the organic solvent or water, It is made of a resin or a dispersing material dispersed in the metal powder, and has an effect that the surface of the green ceramic sheet is hardly unnecessarily permeated.

Further, the invention according to claim 10 is characterized in that an organic solvent or water, a ceramic powder having an average particle size of 5 μm or less and 1 to 60% by weight and dispersed in the organic solvent or water, It is composed of a dispersed resin or a dispersing material, and has an effect of preventing extra penetration of the ink into the surface of the ceramic green sheet.

The invention according to claim 11 comprises the water-soluble organic solvent according to claim 9 or 10, and since the wettability of various powders can be improved from the side of the dispersion medium, the dispersion of the ink can be improved. It has the effect of increasing the stability.

According to a twelfth aspect of the present invention, there is provided an ink comprising 0.1 to 2000% by weight of the curable resin which is cured by heat, ultraviolet rays and electron beams according to the ninth or tenth aspect. Has the effect of shortening the curing time.

The invention according to claim 13 is characterized in that at least an organic solvent or water has an average particle diameter of 0.001 to 3 μm.
A metal powder of 1 to 60% by weight is mixed and dispersed under high pressure, and then dispersed and mixed. By dispersing at high pressure into a metal powder having an extremely wide particle size distribution, the required amount of dispersed state can be further improved. It has an effect that it can be obtained at low cost and that the ink ejection amount can be stabilized.

The invention according to claim 14 is characterized in that at least an organic solvent or water has an average particle size of 5 μm or less and 1 to 6 particles.
It is made by mixing 0% by weight or less of ceramic powder, dispersing, mixing and filtering after high-pressure dispersion. Instead of conventional color pigment type ink, stable printing can be performed for a long time without deteriorating electrical characteristics. It has the effect that it becomes possible.

According to a fifteenth aspect of the present invention, at least an organic solvent or water has an average particle diameter of 0.001 to 3 μm.
In the following, 1 to 60% by weight or less of metal powder is mixed, dispersed and mixed by a bead mill, and then filtered, which has an effect that it can be manufactured at lower cost.

The invention according to claim 16 is characterized in that at least an organic solvent or water has an average particle size of 5 μm or less and 1 to 6 particles.
It is obtained by mixing 0% by weight or less of ceramic powder, dispersing and mixing with a bead mill, and then filtering, and has an effect of being able to be manufactured at lower cost.

(Embodiment 1) Hereinafter, a method for manufacturing a multilayer ceramic electronic component according to Embodiment 1 of the present invention will be described with reference to the drawings.

FIG. 1A is a view for explaining a step of forming an ink pattern on a ceramic green sheet, which is a main part of the method for manufacturing a multilayer ceramic electronic component according to the first embodiment of the present invention, and FIG. It is a figure explaining the process of forming the ceramic raw laminated body which is the principal part.

First, a ceramic green sheet fixed to a base film is formed by a process similar to the conventional technique.

Next, as shown in FIG. 1A, the base film 60 is peeled from the green ceramic sheet 61 to expose the base film surface 62. The surface roughness of the base film surface 62 is formed to be the same as the surface roughness of the base film 60 in contact with the base film surface 62,
It is extremely small compared to the dry surface 63 and has no fine holes, depressions or gaps.

Next, as shown in the figure, ink droplets 72 are jetted toward the base film surface 62 by an ink jet device 71 and adhere to the base film surface 62 to form a desired ink pattern 81.

Next, as shown in FIG. 1B, a desired number of ceramic green sheets 61 each having an ink pattern 81 formed on a base film surface 62 are laminated and pressed by a pressing device 91 from top to bottom. To form a ceramic green laminate.

Finally, the ceramic green laminate is cut into a predetermined shape and fired, and then external electrodes are formed to form a multilayer ceramic electronic component.

The multilayer ceramic electronic component according to the present embodiment will be compared with the multilayer ceramic electronic component described in the prior art, taking a multilayer ceramic capacitor as an example.

The multilayer ceramic capacitors used in this comparison were compared under the following conditions. The thickness of the ceramic green sheet is set to 20 μm, the ink pattern formed on the ceramic green sheet is used as the electrode ink pattern, and multiple types of organic solvents that prevent the ceramic green sheet from dissolving and expanding are mixed, and nickel powder is highly dispersed. It is formed by using the immersed ink. This is a multilayer ceramic capacitor using a formed ceramic green laminate, which is cut into a shape of 1.1 mm * 0.6 mm.

The multilayer ceramic electronic component of the present embodiment is compared with the multilayer ceramic electronic component described in the related art by forming a multilayer ceramic capacitor. Assuming that the thickness of the ceramic green sheet is 20 μm, the conventional technology has an electrode pattern formed on the dry surface of the ceramic green sheet. could not. When the yield was examined, 90% was obtained according to the present embodiment, whereas 10% was described according to the related art. In addition, the thickness of the ceramic raw sheet is set to 1
When the thickness is set to 00 μm, the yield in this embodiment is 9
5%, whereas the description in the prior art is 8%.
It was 0%. Further, when the surface of the raw ceramic sheet was observed with a laser-type non-contact surface roughness meter or the like, a large number of microcracks having a depth of about 10 μm could be detected on the dry surface, but hardly found on the base film surface. This is because microcracks could be prevented because the base film surface was in contact with the soft resin of the base film.

(Embodiment 2) A method of manufacturing a multilayer ceramic electronic component according to Embodiment 2 of the present invention will be described below with reference to the drawings.

FIG. 2 is a view for explaining a step of forming an ink pattern on a ceramic green sheet which is a main part of the method for manufacturing a laminated ceramic electronic component according to the second embodiment of the present invention, and FIG. FIG. 4 is a diagram illustrating a process of forming first and second ink patterns on a base film surface of a green sheet, and FIG. 4 is a diagram illustrating a process of forming a ceramic green laminate, which is the main part. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

The difference between the second embodiment and the first embodiment is that an ink droplet 72 is ejected by an ink jet device 71 toward a base film surface 62 of a green ceramic sheet 61 according to the first embodiment. Step of Forming Desired Ink Pattern 81 by Adhering to Base Film Surface 62 "
Is to form a desired ink pattern by ejecting ink droplets by means of respective ink jet devices toward the base film surface of the ceramic raw sheet using a plurality of types of inks and adhering to the base film surface. .

In this step, as shown in FIG. 2, the base film 60 is peeled from the raw ceramic sheet 61 to expose the base film surface 62, and the base film surface 6
2, the first and second ink jet devices 73, 7
4, the first and second ink droplets 75 and 76 are ejected,
The desired first and second ink patterns 82 and 83 are formed on the base film surface 62 to form desired ink patterns. At this time, the first and second ink jet devices 73 and 74 inserted into the first and second ink jet devices 73 and 74, respectively.
The second ink droplets 75 and 76 have different inks. The first ink pattern 82 formed on the base film surface 62 by the first ink droplet 75 is
This is an electrode pattern to be an internal electrode. In addition, the second ink droplet 76 forms the second ink droplet 76 on the base film surface 62.
The ink pattern 83 is a pattern that is the reverse of the first ink pattern 82 and the first and second ink patterns 8.
This is an auxiliary pattern for preventing unevenness in forming a ceramic raw sheet by laminating the ceramic raw sheets 61 having 2,83. This step will be described in further detail. As shown in FIG.
And the first and second ink jet devices 73 and 73 as indicated by arrows.
When the nozzle 74 is moved while ejecting first and second ink droplets 75 and 76 (not shown in this drawing), the first ink pattern 82 as an electrode pattern and the first ink pattern 82 are formed. A second pattern, which is an auxiliary pattern, can be formed on the base film surface 62 that is not provided.

Next, as shown in FIG. 4, a desired number of ceramic green sheets 61 on which first and second ink patterns 82 and 83 are formed are laminated on a base film surface 62 and pressed from top to bottom. The laminated ceramic electronic component is formed by pressing and integrating with a device 91 to form a ceramic green laminate, cutting and firing the ceramic green laminate into a predetermined shape, and then forming external electrodes.

The multilayer ceramic electronic component of the present embodiment is compared with the multilayer ceramic electronic component described in the related art by forming a multilayer ceramic capacitor. Here, it is assumed that the multilayer ceramic capacitor described in the related art does not form the second ink pattern. 20μm and 50μ thickness of ceramic raw sheet
When the yield was examined with m and the number of laminations set to 300, it was 90% in the present embodiment, but 5% in the prior art. In the multilayer ceramic capacitor of the present embodiment, since the second ink pattern was formed, no irregularities occurred on the surface of the ceramic green laminate. Further, when the thickness of the ceramic green sheet is set to 100 μm and 300 sheets are stacked, the yield is 90% for the present embodiment and 50% for the one described in the related art.

Embodiment 3 Hereinafter, a method for manufacturing a multilayer ceramic electronic component according to Embodiment 3 of the present invention will be described with reference to the drawings.

FIG. 5A is a view for explaining a step of pressing a ceramic green sheet onto a ceramic green laminate, which is a main part of the method for manufacturing a multilayer ceramic electronic component according to the third embodiment of the present invention, and FIG. 3) is a diagram illustrating a process of forming an ink pattern on the surface of the ceramic green sheet pressed to the ceramic green laminate, which is the main part.

First, on the upper surface of the ceramic green laminate with internal electrodes 102 having the internal electrodes 101 inside and on the upper surface,
Ceramic raw sheet 6 fixed to base film 60
The first drying surface 63 is arranged so as to be in contact with the drying surface 63, and is pressed and pressed by a pressing device 91 from top to bottom.

Next, as shown in FIG. 5B, the base film 60 is peeled off from the ceramic raw sheet 61 pressed on the ceramic raw laminate with internal electrodes 102 to expose the base film surface 62. Thereafter, as shown in the figure, an ink droplet 72 is jetted toward the base film surface 62 by an ink jet device 71, and adheres to the base film surface 62 to form a desired ink pattern 81.

Next, the step of pressing the green ceramic sheet on the ceramic green laminate with internal electrodes and the step of forming the ink pattern 81 are repeated a desired number of times.

Finally, the ceramic green laminate is cut into a predetermined shape and fired, and then external electrodes are formed to form a multilayer ceramic electronic component.

The multilayer ceramic electronic component according to the third embodiment is compared with the multilayer ceramic electronic component described in the related art by forming a multilayer ceramic capacitor. 20μm and 50μ thickness of ceramic raw sheet
When the yield was examined with m and the number of laminations set to 300, it was 90% in the present embodiment, but 5% in the prior art.

When a multilayer ceramic electronic component is manufactured by using the manufacturing method according to the third embodiment, a predetermined ink pattern can be formed with high precision by an ink jet method even when a thin and easily breakable ceramic raw sheet is used. .

Embodiment 4 Hereinafter, a method for manufacturing a multilayer ceramic electronic component according to Embodiment 4 of the present invention will be described with reference to the drawings.

FIG. 6 is a view for explaining a step of forming an ink pattern on a ceramic green laminate which is a main part of a method for manufacturing a multilayer ceramic electronic component according to the fourth embodiment of the present invention. Here, the same components as those of the second and third embodiments are denoted by the same reference numerals, and the detailed description is omitted.

The difference between the fourth embodiment and the third embodiment is that an ink droplet 72 is jetted toward the base film surface 62 by the ink jet device 71 to the base film surface 62 in the third embodiment. The step of forming a desired ink pattern 81 by attaching the ink droplets to the base film surface of the ceramic green sheet using a plurality of inks by ejecting ink droplets toward the base film surface by using respective ink jet devices. To form a desired ink pattern. "

In this step, as shown in FIG. 6, the base film 60 (not shown in this figure) is peeled from the raw ceramic sheet 61 fixed on the upper surface of the pallet 111 to expose the base film surface 62. , The first and second ink jet devices 7 toward the base film surface 62.
The first and second ink droplets 75 and 76 are ejected by the nozzles 3 and 74 to adhere the base film surface 62 to form desired first and second ink patterns 82 and 83. At this time, the first and second ink droplets 75 and 76 inserted into the first and second ink jet devices 73 and 74 have different types of ink. The first ink pattern 82 formed on the base film surface 62 by the first ink droplet 75 is an electrode pattern serving as an internal electrode. The second ink pattern 83 formed on the base film surface 62 by the second ink droplet 76 is a pattern that is the reverse of the first ink pattern 82 and has first and second ink patterns 82 and 83. Ceramic raw sheet 61
These are auxiliary patterns for preventing irregularities when forming a ceramic green sheet by laminating the ceramic raw sheets. These first and second ink patterns 82 and 83 are the same as those described in the second embodiment.

Finally, a desired number of green sheets 61 on which the first and second ink patterns 82 and 83 are formed are laminated on the base film surface 62, and are integrated by pressing from top to bottom by a pressing device. Then, after forming a ceramic green laminate, cutting and firing the ceramic green laminate into a predetermined shape, external electrodes are formed to form a multilayer ceramic electronic component.

The multilayer ceramic electronic component according to the fourth embodiment is compared with the multilayer ceramic electronic component described in the related art by forming a multilayer ceramic capacitor. Here, it is assumed that the multilayer ceramic capacitor described in the related art does not form the second ink pattern. When the yield was examined by setting the thickness of the ceramic green sheet to 10 μm and the number of laminated sheets to 400, it was 90% in the present embodiment, but 5% in the prior art. Since the multilayer ceramic capacitor of the present embodiment has formed the second ink pattern, no irregularities occurred on the surface of the ceramic green laminate.

Embodiment 5 Hereinafter, a method for manufacturing a multilayer ceramic electronic component according to Embodiment 5 of the present invention will be described with reference to the drawings.

FIG. 7 is a view for explaining a step of forming an ink pattern on a ceramic green laminate which is a main part of a method for manufacturing a laminated ceramic electronic component according to the fifth embodiment of the present invention. Here, the same components as those of the third and fourth embodiments are denoted by the same reference numerals, and the detailed description is omitted.

The difference between the third embodiment and the fourth embodiment is that an ink droplet 72 is jetted toward the base film surface 62 by the ink jet device 71 to the base film surface 62 of the fourth embodiment. The step of adhering to form a desired ink pattern 81 "is described as" spraying the first ink droplet toward the base film surface of the ceramic green sheet using the first ink jet device, and adhering it to the base film surface. " After forming a desired first ink pattern, a second ink droplet is ejected toward the base film surface of the ceramic green sheet using a second ink jet device so as to cover the first ink pattern. Step of Forming a Second Ink Pattern ".

In this step, as shown in FIG. 7, the ceramic raw sheet 61 (with the base film 60 on the upper surface of the ceramic laminate with internal electrodes 103 having the internal electrodes 101 inside fixed on the upper surface of the pallet 111) is used. It is crimped so as to be in contact with the dry surface 63 (not shown in this drawing) of the drawing (not shown in this drawing).

Next, the base film 60 (not shown in the figure) is peeled from the raw ceramic sheet 61 to expose the base film surface 62, and the base film surface 62 is exposed.
Toward the first ink jet device 73 (in this drawing,
(Not shown), the first ink droplet 7 serving as an electrode pattern
5 (not shown in this figure) is ejected to adhere to the base film surface 62 to form a first ink pattern 82.

Next, a second ink droplet 76 serving as an auxiliary pattern is ejected from the second ink jet device 74 toward the base film surface 62 so as to cover the first ink pattern 82, and the first ink droplet 76 is ejected. A ceramic green laminate in which the second ink pattern 83 is formed by adhering to the ink pattern 82 and the base film surface 62 is obtained. At this time, the first and second ink droplets 75 and 76 inserted into the first and second ink jet devices 73 and 74 have different types of ink.

Finally, the ceramic green laminate is cut into a predetermined shape and fired, and then external electrodes are formed to form a multilayer ceramic electronic component.

(Embodiment 6) A method of manufacturing a multilayer ceramic electronic component according to Embodiment 6 of the present invention will be described below with reference to the drawings.

FIG. 8A is a view for explaining a step of forming an ink pattern on a ceramic green laminate which is a main part of a method for manufacturing a multilayer ceramic electronic component according to Embodiment 6 of the present invention, and FIG. 8B. FIG. 8 is a view for explaining a step of simultaneously drying or curing each of a plurality of pallets, which are the same essential parts.
(C) is a figure explaining the process of laminating the same ceramic raw sheet.

First, the ceramic raw sheet 61 fixed to the base film 60 is mounted on the upper surface of the pallet 111, and on the opposite side of the pallet 111 of the ceramic laminate with internal electrodes 103 having the internal electrodes 101 inside and on the upper surface. It is arranged so as to be in contact with the drying surface 63, and is pressed and pressed by a pressing device 91 from top to bottom.

Next, the ceramic green laminate 10 with internal electrodes
The base film 60 is peeled off from the ceramic raw sheet 61 pressed to 3 so that the base film surface 62 is exposed.

Next, as shown in FIG. 8A, an ink droplet 72 is jetted toward the base film surface 62 by an ink jet device 71, and adheres to the base film surface 62 to form a desired ink pattern 81. The first ceramic green laminate with internal electrodes 104 having the ink pattern 81 is obtained. By repeating these steps a plurality of times, the first surface having the ink pattern 81 on the upper surface of the pallet 111 is formed.
A plurality of ceramic green laminates with internal electrodes 104 are formed.

Next, as shown in FIG. 8B, the first ceramic green laminate 104 with internal electrodes is placed on a pallet 111.
Each time, a plurality of sheets are simultaneously inserted into a dryer or a curing oven to be dried or cured.

Next, the pallet 111 is placed on the upper surface of the ink pattern 81 of the first ceramic laminate with internal electrodes 104 having the ink pattern 81 on the upper surface of the pallet 111.
Of another ceramic green laminate 10 with internal electrodes,
4 are stacked and integrated by pressing from top to bottom with a pressing device to form a second ceramic laminate with internal electrodes. This step is repeated a desired number of times.

Finally, after cutting and firing the second ceramic green laminate with internal electrodes into a predetermined shape, external electrodes are formed to form a multilayer ceramic electronic component.

In the sixth embodiment, “the base film 60 is peeled off from the raw ceramic sheet 61 to expose the base film surface 62, and ink droplets 72 are ejected toward the base film surface 62 by the ink jet device 71. Then, a desired ink pattern 81 was formed on the base film surface 62 to form a desired ink pattern 81, and a first ceramic laminate with internal electrodes 104 having the ink pattern 81 was obtained. "
However, as described in the second or fourth embodiment, "a plurality of types of ink are used to eject ink droplets toward the base film surface of the ceramic raw sheet by the respective ink jet devices and adhere to the base film surface. To form a desired ink pattern ".

(Embodiment 7) A method of manufacturing a multilayer ceramic electronic component according to Embodiment 7 of the present invention will be described below with reference to the drawings.

FIG. 9A illustrates a step of laminating a ceramic raw sheet having an auxiliary pattern on a ceramic raw laminate with internal electrodes, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to the seventh embodiment of the present invention. Fig. 9
(B) is a figure explaining the process of forming an ink pattern in the ceramic raw laminate which is the principal part.

First, the pallet 111 is fixed on the upper surface of the ceramic laminate with internal electrodes 103 having an uneven portion 121 on the surface facing the contact surface of the pallet 111 and having the internal electrode 101 inside. Is arranged so as to be in contact with the auxiliary pattern correcting portion 122 of the ceramic raw sheet 123 with the auxiliary pattern correcting portion fixed to the base film 60 having the auxiliary pattern correcting portion 122 that fills in, and pressed by the press device 91 from top to bottom. And crimp.

Next, as shown in FIG. 9 (b), the base film 60 is peeled off from the ceramic raw sheet 123 with the auxiliary pattern correcting portion pressed to the ceramic raw laminate 103 with the internal electrodes, so that the base film surface 62 is removed. Expose. Thereafter, as shown in the figure, an ink droplet 72 is jetted toward the base film surface 62 by an ink jet device 71, and adheres to the base film surface 62 to form a desired ink pattern 81.

Next, a plurality of the ceramic green laminates with internal electrodes 103 obtained in the preceding step are inserted into a dryer or a curing furnace at the same time for each pallet 111 to be dried or cured.

Next, if necessary, the pallet 1 is placed on the upper surface of the ink pattern 81 of the ceramic laminate with internal electrodes 103 having the ink pattern 81 on the upper surface of the pallet 111.
Another ceramic green laminate with internal electrodes 104 from which 11 has been removed is laminated and integrated by pressing from above to below using a pressing device to form a further ceramic green laminate with internal electrodes. These steps are repeated a desired number of times.

Finally, the pallet 111 is removed from the ceramic green laminate with internal electrodes obtained up to the previous step, cut into a predetermined shape and fired, and then external electrodes are formed to form a multilayer ceramic electronic component. is there.

In the seventh embodiment, the base film surface 6 of the ceramic raw sheet 123 with the auxiliary pattern correcting portion is provided.
Although the ink pattern 81 was formed in No. 2, it is not necessary to form the ink pattern 81 in a process before cutting the ceramic green laminate with internal electrodes into a predetermined shape.

After forming the ink pattern 81 on the base film surface 62 of the ceramic raw sheet 123 with the auxiliary pattern correcting portion, as shown in FIG. 7 of the fifth embodiment, the first Another ink pattern may be formed by ejecting a first ink droplet and another second ink droplet so as to cover at least the ink pattern 81 using another ink jet device and another ink jet device. good.

Embodiment 8 Hereinafter, a method for manufacturing a multilayer ceramic electronic component according to Embodiment 8 of the present invention will be described with reference to the drawings.

FIG. 10A illustrates a step of laminating a ceramic raw sheet having an auxiliary pattern on a ceramic raw laminate with internal electrodes, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to the eighth embodiment of the present invention. Figure, Figure 10
(B) is a figure explaining the process of forming an ink pattern in the ceramic raw laminate which is the principal part.

First, as shown in FIG. 10 (a), a ceramic substrate with internal electrodes, which is fixed to a pallet 111, has an uneven portion 121 on the surface facing the contact surface of the pallet 111 and has an internal electrode 101 inside. Laminate 103
Pattern correcting section 1 for filling uneven portion 121 on the upper surface of
22 is arranged so as to be in contact with the auxiliary pattern correcting portion 122 of the fixed base film 60, and is pressed from the top to the bottom by a press device 91 and pressed.

Next, as shown in FIG. 10B, the base film 60 pressed to the ceramic laminate with internal electrodes 103 is peeled off. Thereafter, as shown in the figure, an ink droplet 72 is jetted by an ink jet device 71 toward the surface from which the base film 60 has been peeled, and adheres to the surface from which the base film 60 has been peeled to form a desired ink pattern 81. I do. Here, the ink pattern 81 is formed on the upper surface of at least one of the auxiliary pattern correcting section 122 and the ceramic laminate with internal electrodes 103.

Next, a plurality of ceramic green laminates 103 with internal electrodes obtained in the previous step are inserted into a dryer or a curing furnace simultaneously for each pallet 111 to be dried or cured.

Next, if necessary, the pallet 1 is placed on the upper surface of the ink pattern 81 of the ceramic laminate with internal electrodes 103 having the ink pattern 81 on the upper surface of the pallet 111.
Another ceramic green laminate with internal electrodes 104 from which 11 has been removed is laminated and integrated by pressing from above to below using a pressing device to form a further ceramic green laminate with internal electrodes. These steps are repeated a desired number of times.

Finally, the pallet 111 is removed from the ceramic laminate with internal electrodes obtained up to the previous step, cut into a predetermined shape and fired, and then external electrodes are formed to form a multilayer ceramic electronic component. is there.

In the eighth embodiment, the base film surface 6 of the ceramic raw sheet 123 with the auxiliary pattern correcting portion is provided.
Although the ink pattern 81 was formed in No. 2, it is not necessary to form the ink pattern 81 in a process before cutting the ceramic green laminate with internal electrodes into a predetermined shape.

After the ink pattern 81 is formed on the base film surface 62 of the ceramic raw sheet 123 with the auxiliary pattern correcting section, the first pattern is formed so as to cover the ink pattern 81 as shown in FIG. Another ink pattern may be formed by ejecting a first ink droplet and another second ink droplet so as to cover at least the ink pattern 81 using another ink jet device and another ink jet device. good.

(Embodiment 9) Hereinafter, an ink jet ink used in Embodiments 1 to 8 will be described.

The ink for ink jet of the ninth embodiment includes an organic solvent or water, a metal powder dispersed in the organic solvent or water and having an average particle size of 3 μm or less and 1 to 60% by weight, An electrode ink comprising a resin or a dispersant dispersed in metal powder and having a viscosity of 0.0001 to 10 poise. "

The metal powder dispersed in an organic solvent or water is mainly composed of nickel, copper, palladium, platinum or the like, and is made into fine particles. No fixation occurs. The average particle size is desirably 3 μm or less because the larger the diameter of the metal powder, the easier it is to precipitate and aggregate. Further, when the concentration of the metal powder is 0.5% by weight or less, conduction cannot be established and the viscosity becomes 70% by weight or more and the ink cannot be ejected from the ejection head for the ink jet. Therefore, the concentration of the metal powder is desirably 1 to 60% by weight.

The resin or dispersant dispersed in the metal powder is preferably a butyral resin, a cellulose resin, an acrylic resin or an alcohol resin.

The viscosity is desirably not less than 0.01 poise because a special low-viscosity solvent and a dispersant are used in order to make the viscosity of water itself less than 0.01 poise.

The method of producing the ink for an ink jet constructed as described above will be described below.

FIG. 11 is a diagram for explaining a method of manufacturing an ink for an ink jet according to the ninth embodiment of the present invention.

First, an average particle size of 0.02
20 parts by weight of nickel powder of 100 μm and 100 parts by weight of pure water are charged from the inlet 141 and mixed.

Next, a desired amount of a dispersant is added thereto,
After agitating on the rotating gantry, the pressure section 142, which is a high-pressure disperser,
And a high-pressure dispersion is performed several times at a dispersion pressure of 1000 kg / cm ² . The pressure section 142 is brought into a high pressure state by a hydraulic pump or the like.

Next, the dispersed ink is dispersed in the dispersion mixing section 14.
In step 3, the mixture is filtered a plurality of times with a membrane filter having an opening of 5 μm, and a desired amount of a resin solution similarly filtered with a 1 μm membrane filter is added to adjust the viscosity to about 0.1 to 0.5 poise. As shown in FIG. 12, the dispersing / mixing unit 143 supplies the ink material supplied from the charging port 141 (not shown in this drawing) to the first and second dispersing / mixing unit feeding paths 15.
High-speed inflow at high pressure from 1,152 in the direction of the arrow,
By violently hitting each other in the collecting section 153, mixing, dispersion and uniformity can be achieved. FIG.
As shown in FIG. 7, by causing the recovery unit 153 to collide with the collision unit 161 made of diamond at high pressure and violently, even if it is an aggregate of metal powders originally present in the metal powder, damage is minimized. While mixing, dispersing and uniformizing.

Thereafter, the ink is discharged from the discharge port 144, put into an ink cartridge of a commercially available ink jet printer, and used as an electrode paste.

The dispersion mixing unit 1 according to the ninth embodiment
By using a plurality of 43, it is possible to prevent a pulsating flow at the time of applying the electrode paste from the outlet 144, and it is possible to perform a uniform dispersion under a uniform pressure. At this time, if the pressure application part is a part close to the discharge port 144, the back pressure can be applied to a part close to the pressure part 142, so that there is an effect that the life of the equipment can be extended.

Although the metal powder has been described as a nickel powder, a single powder or an alloy powder of tungsten, copper, nickel, aluminum, palladium or platinum may be used.

A ceramic ink for ink jet may be prepared by using a ceramic material such as a dielectric material, glass, or a magnetic material instead of the metal powder.

When the ink for ink jet contains a water-soluble organic solvent such as ethylene glycol or polyethylene glycol, the wettability of various powders can be improved from the side of the dispersion medium, so that the dispersion stability of the ink can be improved. It is desirable because it can.

It is preferable that the ink for ink jet contains a curable resin which is cured and polymerized by heat, ultraviolet rays, electron beams or the like, because the curing time of the ink can be shortened. At this time, the curable resin is 0.5% by weight based on the ink powder.
Below, the adhesive strength is insufficient, and if it is more than 3000% by weight, delamination or the like occurs during firing.
A range of 000% by weight is desirable.

(Embodiment 10) Hereinafter, a method of manufacturing an ink jet ink according to Embodiment 10 of the present invention will be described.

First, an average particle size of 0.02
20 parts by weight of a nickel powder having a particle diameter of 20 μm and 100 parts by weight of pure water are introduced from an inlet and mixed.

Next, a desired amount of a dispersant is added here,
After stirring with a rotating base, the mixture is dispersed with a bead mill.

Next, the mixture was filtered through a membrane filter and 5 μm
m or more aggregates are removed to produce an ink jet ink as an electrode ink.

When the metal particles are dispersed by a bead mill, the finer the metal particles, the better. Particularly, when the particle size is 1 μm or less, it is preferable because flakes are hardly generated.

[0113]

As described above, an object of the present invention is to provide a method for producing a laminated ceramic electronic component having improved quality even when the ceramic green sheet is thin, an ink for ink jet used therefor, and a method for producing the same. It is assumed that.

[Brief description of the drawings]

FIG. 1A is a diagram illustrating a process of forming an ink pattern on a ceramic green sheet, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to the first embodiment of the present invention; The figure explaining the process of forming a green laminate

FIG. 2 is a view illustrating a process of forming an ink pattern on a ceramic green sheet, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to a second embodiment of the present invention.

FIG. 3 is a diagram illustrating a process of forming first and second ink patterns on a base film surface of a ceramic raw sheet, which is a main part of the same.

FIG. 4 is a view for explaining a step of forming a ceramic green laminate which is the main part.

FIG. 5A is a view illustrating a step of pressing a ceramic green sheet onto a ceramic green laminate, which is a main part of the method for manufacturing a multilayer ceramic electronic component according to the third embodiment of the present invention; The figure explaining the process of forming an ink pattern on the surface of the ceramic green sheet pressed to a certain ceramic green laminate

FIG. 6 is a diagram illustrating a process of forming an ink pattern on a ceramic green laminate, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to a fourth embodiment of the present invention.

FIG. 7 is a view illustrating a step of forming an ink pattern on a ceramic green laminate which is a main part of a method for manufacturing a multilayer ceramic electronic component according to a fifth embodiment of the present invention.

FIG. 8A is a view illustrating a step of forming an ink pattern on a ceramic green laminate which is a main part of a method for manufacturing a multilayer ceramic electronic component according to a sixth embodiment of the present invention; Diagram explaining the step of drying or hardening simultaneously for each of a plurality of pallets (c) Diagram explaining the step of laminating the plurality of ceramic raw sheets

9A is a view illustrating a step of laminating a ceramic raw sheet having an auxiliary pattern on a ceramic raw laminate with internal electrodes, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to Embodiment 7 of the present invention; FIG. (B) A diagram for explaining a process of forming an ink pattern on the ceramic green laminate, which is the main part.

FIG. 10 (a) is a view illustrating a step of laminating a ceramic raw sheet having an auxiliary pattern on a ceramic raw laminate with internal electrodes, which is a main part of a method for manufacturing a multilayer ceramic electronic component according to an eighth embodiment of the present invention. (B) A diagram illustrating a process of forming an ink pattern on the ceramic green laminate, which is the main part.

FIG. 11 is a diagram illustrating a method for producing an ink for an ink jet according to a ninth embodiment of the present invention.

FIG. 12 is a cross-sectional view of a dispersion mixing section, which is the main part.

FIG. 13 is a cross-sectional view of a bead mill as the main part.

FIG. 14 is a diagram illustrating formation of a raw ceramic sheet, which is a main part of a conventional method for manufacturing a multilayer ceramic electronic component.

FIG. 15 is a view for explaining formation of a ceramic raw sheet, which is a main part of the same.

FIG. 16 is a view for explaining formation of a ceramic raw sheet, which is an essential part of the same.

[Explanation of symbols]

 Reference Signs List 60 base film 61 ceramic raw sheet 62 base film surface 63 drying surface 71 ink jet device 73 first ink jet device 74 second ink jet device 81 ink pattern 82 first ink pattern 83 second ink pattern 101 internal electrode Reference Signs List 102 ceramic raw laminate 103 ceramic raw laminate with internal electrodes 111 pallet 121 irregularities 122 auxiliary pattern correction unit 123 ceramic raw sheet with auxiliary pattern correction unit

 ────────────────────────────────────────────────── ─── Continued on the front page F-term (reference) 2C056 FB01 FB08 FC01 FD20 4J039 AB02 AD06 AD07 AD09 BA06 BA12 BA38 BA39 BD02 BE12 CA05 DA02 DA05 EA03 EA04 EA06 EA42 EA44 EA46 FA06 GA24 5E001 AB03 AC09 AF06 AH01 A03 AH01 A09 5E082 AB03 BC36 BC38 EE04 EE19 EE23 EE24 EE26 EE35 FG06 FG18 FG26 FG54 JJ03 LL01 LL02 MM22 MM24 PP03 PP09

Claims (16)

[Claims] 1. A step of peeling a base film from a green ceramic sheet fixedly provided on a base film, and forming a predetermined ink pattern on the base film surface of the peeled ceramic green sheet by an ink jet. After repeating the process and a plurality of times, a plurality of the ceramic green sheets having the ink pattern formed thereon to form a ceramic green laminate, cut into a predetermined shape,
A method for manufacturing a multilayer ceramic electronic component in which firing is performed and then external electrodes are formed. 2. A dry surface of a ceramic green sheet fixed to a base film is pressure-bonded to a surface of a ceramic green laminate with internal electrodes having at least internal electrodes inside, and the base film is peeled from the ceramic green sheet. ,
A step of forming a predetermined ink pattern by ink jet on the base film surface of the peeled ceramic raw sheet by a plurality of times, cutting into a predetermined shape, firing, and thereafter forming a multilayer ceramic electronic component Manufacturing method. 3. A ceramic green laminate with internal electrodes having at least internal electrodes formed on a pallet, and a base on a surface of the ceramic green laminate with internal electrodes opposite to a surface in contact with the pallet. A step of pressing a dry surface of the ceramic green sheet fixed to the film, a step of peeling the base film from the ceramic green sheet, and a step of forming a predetermined ink pattern on the base film surface of the peeled ceramic green sheet by an ink jet. Is repeated one or more times to form a plurality of first ceramic laminates with internal electrodes, and a plurality of first ceramic laminates with internal electrodes are laminated to form a second laminate.
Forming a ceramic green laminate with internal electrodes, cutting into a predetermined shape, firing, and then forming external electrodes. 4. A base film having an uneven top surface and an internal electrode having at least an internal electrode therein, and a base film having an auxiliary pattern correcting portion for filling the uneven surface of the ceramic raw laminate with internal electrodes. The fixed ceramic raw sheet with the auxiliary pattern correcting portion is pressure-bonded, the base film is peeled from the ceramic green laminate with internal electrodes having the ceramic raw sheet with the auxiliary pattern, and the base film surface of the peeled ceramic raw sheet is removed. Forming a predetermined ink pattern by an ink jet, cutting and firing into a predetermined shape, and then forming an external electrode. 5. A base in which only an auxiliary pattern correcting portion for filling an uneven surface of a ceramic green laminate with internal electrodes is fixed to a ceramic green laminate with internal electrodes having an uneven surface on an upper surface and having at least an internal electrode inside. A step of pressing the film, peeling the base film from the base film with the auxiliary pattern correcting portion, forming a predetermined ink pattern by an ink jet on the peeled surface, cutting and firing into a predetermined shape, and then externally A method for manufacturing a multilayer ceramic electronic component for forming an electrode. 6. The step of forming a predetermined ink pattern by ink jet on the base film surface of the peeled ceramic green sheet, wherein the predetermined ink pattern is formed on the base film of the ceramic green sheet using different inks by ink jet. The method for manufacturing a multilayer ceramic electronic component according to claim 1, wherein the method is a step of forming an ink pattern. 7. The step of forming a predetermined ink pattern on the base film surface of the peeled ceramic raw sheet by an ink jet method, wherein the predetermined first ink pattern is formed on the base film of the ceramic raw sheet by ink jet. The method according to any one of claims 1 to 5, further comprising a step of forming a second ink pattern by ink jet on the base film of the ceramic raw sheet so as to cover the first ink pattern after the formation. A method for manufacturing a multilayer ceramic electronic component. 8. The step of forming a ceramic green laminate by laminating a plurality of ceramic raw sheets on which an ink pattern is formed includes laminating a plurality of ceramic raw sheets on which an ink pattern is formed on the upper surface of a pallet. The method according to any one of claims 1 to 5, wherein after forming one ceramic green laminate, a plurality of the first ceramic green laminates are laminated to form a second ceramic green laminate. Of manufacturing a multilayer ceramic electronic component. 9. An organic solvent or water, a metal powder having an average particle diameter of 0.001 to 3 μm and 1 to 60% by weight dispersed in the organic solvent or water, and a resin or a resin dispersed in the metal powder. Ink jet ink consisting of dispersant. 10. An organic solvent or water, a ceramic powder having an average particle size of 5 μm or less and 1 to 60% by weight dispersed in the organic solvent or water, and a resin or dispersant dispersed in the ceramic powder. Ink jet ink. 11. The ink for ink jet according to claim 9, which comprises a water-soluble organic solvent. 12. The ink for an ink jet according to claim 9, wherein a curable resin which is cured by heat, ultraviolet rays, and electron beams is contained in an amount of 0.1 to 2000% by weight. 13. Production of an ink for ink jet, comprising mixing at least an organic solvent or water with a metal powder having an average particle size of 0.001 to 3 μm and 1 to 60% by weight, dispersing under high pressure, and dispersing and mixing. Method. 14. A method for producing an ink for an ink jet, comprising mixing at least an organic solvent or water with ceramic powder having an average particle size of 5 μm or less and 1 to 60% by weight, dispersing, mixing, and filtering. . 15. An ink for ink jet obtained by mixing at least an organic solvent or water with a metal powder having an average particle diameter of 0.001 to 3 μm and 1 to 60% by weight, dispersing and mixing in a bead mill, and filtering. Production method. 16. A method for producing an ink for ink jet, comprising mixing at least an organic solvent or water with 1 to 60% by weight of ceramic powder having an average particle size of 5 μm or less, dispersing and mixing in a bead mill, and filtering.