JPH02114615A - Manufacture of laminated ceramic electronic component - Google Patents

Abstract

PURPOSE:To obtain the title laminated ceramic electronic component on which a transfer operation can be performed while its mechanical strength is maintained by a method wherein, after a supporting body on which an electrode ink is formed has been coated with a slurry, in which a specific quantity of thermoplastic resin is blended after it is dried up, the slurry is dried up, and electrode-buried ceramic raw sheet is formed, and it is transferred to the electrode. CONSTITUTION:A heating plate 27, which is heated up by a heater 26, is placed on the side where the electrode-buried ceramic raw sheet 25 of a base film 21a is not formed. On the other hand, a base film 21, which is fixed to a stand 20, and a ceramic raw laminated body 22 are placed on the side where the electrode-buried ceramic raw sheet 25 is formed. Then, the electrode-buried ceramic raw sheet 25, formed on the surface of the base film 21a, is press- bonded by heating on the surface of the ceramic raw laminated body 22 using the heating plate 27. The electrode-buried ceramic raw sheet 25 on the base film 21a is transferred to the surface of the ceramic raw laminated body 22 using a heating plate 27, and an electrode-buried ceramic raw sheet 30 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing multilayer ceramic electronic components such as multilayer ceramic capacitors, which are widely used in electrical products such as video tape recorders and liquid crystal televisions, particularly by a transfer method. It is a thing.

It can also be widely used in manufacturing multilayer ceramic electronic components such as multilayer ceramic substrates and multilayer varistors and multilayer piezoelectric elements.

BACKGROUND OF THE INVENTION In recent years, in the field of electronic components, as the density of circuit boards has increased, there has been a desire for monolithic ceramic capacitors and the like to be made smaller and have higher performance. Here, explanation will be given using a multilayer ceramic capacitor as an example.

FIG. 7 is a partially sectional view of a multilayer ceramic capacitor. In FIG. 7, 1 is a ceramic dielectric layer, 2 is an internal electrode, 3 is an external IN, and 11i. The internal electrodes 2 are alternately connected to two external electrodes 3.

Conventionally, multilayer ceramic capacitors have been manufactured by the following manufacturing method.

First, a predetermined electrode ink is printed on a ceramic green sheet cut into a predetermined size, the electrode ink is dried to form an electrode ink film, and the required number of ceramic green sheets with this electrode ink film formed are printed. They were laminated to form a raw ceramic laminate, and this raw ceramic laminate was cut into a new shape, fired, and completed by attaching external electrodes.

However, in this method of directly printing electrode ink on a green ceramic sheet, when printing the electrode ink on the green ceramic sheet, the solvent contained in the electrode ink (usually sold in commercially available electrode inks) is used. is 30%
The ceramic raw sheet may swell or
The problem was that it was being invaded. Furthermore, as the raw ceramic sheet becomes thinner, pinholes are more likely to occur in the raw ceramic sheet itself, resulting in short circuits between internal electrodes.

Conventionally, several approaches have been taken to address this problem.

For example, there is a method as disclosed in JP-A-58-106244, in which an electrode ink film is printed on a base film, and then a green ceramic sheet is formed thereon by a casting method. In addition, as in Japanese Patent Publication No. 40-19975, there is a method for obtaining electrode-embedded ceramic green sheets by applying electrode ink, drying, continuously applying dielectric slurry, and peeling this from the support. be.

However, since the electrode-embedded ceramic raw sheets made by these methods are laminated after peeling off the base film, as the film thickness becomes thinner, the mechanical strength is extremely reduced, so that it can no longer be used on its own. It becomes unmanageable. For this reason, it was not possible to make the layer thinner than 20 microns. In addition, unevenness caused by the electrode ink film was likely to occur on the surface of the electrode-embedded ceramic green sheet.

Next, a cross section of a conventional electrode-embedded sheet will be explained using FIG. In Figure 8, 4 is a base film, 6
6 is a commercially available ink film, and 6 is a green ceramic sheet. 8th
As shown in the figure, when the green ceramic sheet 6 becomes thin (approximately 30 microns or less), unevenness caused by the electrode ink film 5 appears on the surface of the green ceramic sheet 6.

Furthermore, Japanese Patent Application Laid-open No. 62-63413 discloses a method in which electrode ink is printed on the surface of a raw ceramic sheet while it is adhered to a base film, and the base film is peeled off after lamination, in order to facilitate handling. Proposed. However, in this example, the thinner the ceramic green sheet becomes, the more easily it is attacked by the electrode ink.

Furthermore, the electrode ink solvent soaked into the green ceramic sheet can evaporate from the opposite side of the green ceramic sheet (the side on which the electrode ink is not printed) because it is covered with the base film. It disappears and remains inside the raw ceramic sheet. However, the electrode ink solvent remains on the ceramic green sheet for a longer period of time than before, making the ceramic green sheet more susceptible to attack by the electrode ink.

Next, JP-A-83-31104 and JP-A-63-
The method proposed in Publication No. 32909 does not print the electrode ink on the surface of the green ceramic sheet, but thermally transfers the electrode ink to the surface of the green ceramic sheet, thereby preventing the adverse effects of the electrode ink's solvent while forming an electrode ink film on the green ceramic sheet. The aim is to increase the yield of multilayer ceramic capacitors. However, in this method, both the ceramic green sheets and the electrodes are alternately laminated by thermal transfer. In other words, if the number of stacked internal electrodes is, for example, 50, thermal transfer is repeated 60 times for stacking ceramic green sheets and 60 times for stacking electrodes, a total of more than 100 times. Furthermore, since there is a high possibility that pinholes will occur if there is only one layer of green ceramic sheets, continuous transfer of two layers of green ceramic sheets may be considered as a way to increase the yield.

However, in this case, thermal transfer will be repeated a total of 160 times or more. Furthermore, the thermal history of each transferred layer is different. In other words, the first layer to be thermally transferred is subjected to approximately 150 thermal cycles, while the last layer to be laminated is subjected to only a few subsequent thermal cycles. Generally, each time such a thermal history is applied, the green ceramic sheet is thermally deformed little by little, so the thermal history of the layer that was thermally transferred first increases, and the layer laminated at the end suffers from thermal deformation. The deformation becomes larger in comparison. As a result, the raw ceramic sheet may be deformed, its thickness may change, the area of the electrodes may change, or the laminated position of the electrodes may shift.
Defects are likely to occur when cutting after lamination.

Furthermore, in Japanese Patent Application Laid-Open No. 63-51616, after providing an electrode ink film on a film, the electrode ink film is placed on a green ceramic sheet so as to overlap, and the electrode ink film is thermally transferred to the green ceramic sheet. A method for manufacturing a multilayer capacitor has been proposed, which is characterized by laminating and firing a plurality of raw ceramic sheets. However, this method requires thermal transfer of the electrode ink film before the thermal lamination of the green ceramic sheets, and the heat history is applied to the green ceramic sheets, resulting in poor accuracy. Further, the electrodes are not transferred onto a dimensionally rigid base film, but are thermally transferred onto a heat-softening green ceramic sheet. At this time, not only the raw ceramic sheet but also the base film is thermally deformed during electrode transfer, increasing the possibility that the lamination accuracy will deteriorate. Therefore, in the method of this invention, it is essential to use a base film with excellent heat resistance (heat deformation resistance), which increases manufacturing costs.

Furthermore, in Japanese Patent Application Laid-Open No. 63-61817, electrodes are transferred by heating and pressing a film onto a green ceramic sheet using a press die equipped with protrusions that match the electrode pattern, and transferring electrodes in a predetermined pattern from an electrode layer to a green ceramic sheet. A method of transferring the image onto a sheet has been proposed.

However, in this case, when a protrusion is used, the thickness of the green ceramic sheet inevitably changes at that part.

Furthermore, as many protrusions as the number of electrodes are required, the pressure at each protrusion inevitably varies. For this reason, the thickness or compressibility of the green ceramic sheet varies at each electrode position. In addition, there is a pressure signal at the protrusion that transfers one electrode (a phenomenon generally called a marginal zone, which is the cause of ink unevenness in letterpress printing). The thickness of the sheet changes. Then, the raw ceramic sheet itself and the base film on which the raw ceramic sheet is formed are stacked together.
It is prone to irregular deformation because it is subjected to partial thermal pressure beforehand. Further, as in JP-A No. 63-51816, the electrodes are thermally transferred not onto a dimensionally solid base film, but after being thermally transferred onto a heat-softening green ceramic sheet. At this time, not only the raw ceramic sheet but also the base film are thermally deformed during the thermal transfer of the electrodes, deteriorating the lamination accuracy. Therefore, it is essential to use a base film with excellent heat resistance, which increases manufacturing costs.

In addition, as a method for manufacturing multilayer ceramic capacitors by embedding electrodes in raw ceramic sheets,
There are No. 24226 and Japanese Patent Publication No. 66-37619. However, these manufacturing methods alternately cover multiple layers of dielectrics and electrodes on one base film.
Printing and lamination are performed using a method such as gravure printing. Therefore, there is still the problem that the ceramic raw sheet is attacked by the solvent contained in the electrode.

In addition, the method proposed in Japanese Patent Publication No. 59-172711 is to embed electrodes formed on a base film in a raw ceramic sheet, then laminate and sinter the base film together to produce an fTt layered ceramic capacitor. . However, in order to fire the entire base film,
It is necessary to use a very thin base film having a thickness of about 1.6 to 14 microns. Furthermore, the amount of base film fired increases in proportion to the number of laminated layers, making delamination more likely to occur. For this reason,
The base film needs to be thinner as the number of layers increases. Moreover, such a thin base film is difficult to handle and has poor mechanical strength. Therefore, in this method, not only delamination occurs, but also problems arise in lamination accuracy.

In addition, as a method of laminating without using a solvent, JP-A-63
There is a method for forming an internal electrode of a ceramic laminate, as disclosed in Japanese Patent No. 53912, in which an electrode ink film containing an ultraviolet curable resin, which becomes an internal electrode, is transferred onto a raw ceramic sheet and laminated thereon. However, in this method, the electrode ink is cured only on the gear rear film side, and the surface side of the electrode ink (the side that is not the carrier film) is uncured or semi-cured and has adhesive properties. The surface of this so-called half-dry electrode ink is difficult to handle, as dirt and dirt easily adhere to it even at the slightest touch. Further, after printing the electrode ink, the surface is half-dried, so the carrier film cannot be rolled up. Further, after the electrode ink is transferred to the green ceramic sheet, the green ceramic sheet is laminated without being held by the carrier film.

For this reason, when the thickness of the green ceramic sheet becomes less than about 20 microns, the mechanical strength of the green ceramic sheet itself becomes insufficient and it can no longer be handled. For this reason, there is a limit to how thin the raw ceramic sheet can be.

Problems to be Solved by the Invention Therefore, in the method for manufacturing a multilayer ceramic capacitor as described above, it is difficult to prevent the adverse effects of the solvent contained in the electrode ink. Furthermore, with the structure of a multilayer ceramic capacitor that avoids the influence of the electrode ink's solvent, accurate lamination could not be achieved. Furthermore, in order to prevent the influence of the solvent in the electrode ink, when electrodes are formed on a raw ceramic sheet by thermal transfer, the raw ceramic sheet itself is easily deformed by heat and undergoes a complex thermal history over multiple times. There was a limit to increasing the number of soaked layers.

In addition, simply embedding electrodes in a raw ceramic sheet makes it easier to handle the ceramic raw sheet when it becomes thinner, and it has become a reality in making the ceramic raw sheet thinner.

In view of the above-mentioned problems, the present invention provides that the electrodes are dried, so that silting is less likely to occur, and that the electrode-embedded ceramic raw sheet can be flattened by embedding the electrode in the ceramic raw sheet using a screen printing method.
The present invention provides a method for manufacturing a laminated ceramic electronic component that can be handled and transferred while maintaining mechanical strength since even thin ceramic green sheets of 20 microns or less are laminated together with the base film.

Means for Solving the Problems In order to solve the above problems, the method for manufacturing a multilayer ceramic capacitor of the present invention provides a method for manufacturing a multilayer ceramic capacitor of the present invention, in which a thermoplastic resin is added in an amount of 10% by weight or more after drying on a support formed with an electrode ink film.
After applying a ceramic slurry blended to a concentration of 0% by weight or less by screen printing, the ceramic slurry is dried to produce a ceramic green sheet with an electric principle embedded on the support, and then the electrode is embedded. After thermocompression-bonding the raw ceramic sheet onto the raw ceramic sheet or electrode of the base without peeling it from the support, only the support is peeled off, and the raw ceramic sheet is embedded in the raw ceramic sheet of the base of the base. It has a structure in which it is transferred onto a green sheet or a pond electrode.

Effect of the Invention The present invention has the above-described structure, and since the electrode is dried, the solvent contained in the electrode ink prevents the raw ceramic sheet from being eroded, swollen, and short-circuited. It is possible,
When manufacturing multilayer ceramic capacitors, when embedding electrodes in raw ceramic sheets,
By using the screen printing method, the electrodes can be effectively ? This makes it possible to reduce the occurrence of steps (irregularities) on the surface of the 1ti-embedded ceramic raw sheet. In addition, after thermocompression-bonding the ceramic green sheet with embedded electrodes onto the ceramic green sheet or other electrodes without peeling it off from the support, only the support is peeled off, and the By transferring the sheets, the lamination [1] of the electrode-embedded ceramic raw sheets is made easier to handle, and the lamination accuracy is also improved.

EXAMPLE Hereinafter, a method of manufacturing and a method of laminating a multilayer ceramic capacitor according to an example of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are diagrams for explaining how electrode-embedded ceramic raw sheets are laminated in the present invention. In Figures 1 and 2, 20 is a stand, 21.21a
is a base film, 22 is a ceramic raw laminate, 2'3
, 231L is an electrode, 24 is a raw ceramic sheet, and 26 is a raw ceramic sheet with an embedded electrode.
and a raw ceramic sheet 24. 26 is a heater, 27 is silent, 28 is a transferred electrode, 29 is a transferred electrode-embedded ceramic green sheet, 30 is a transferred electrode-embedded ceramic green sheet, and the transferred electric Wi 28 and the transferred ceramic green sheet are It is composed of a sheet 29. Further, the arrow indicates the direction of movement of silently 27.

First, explanation will be given using FIG. 1. First, on the side of the base film 211L on which the electrode-embedded ceramic raw sheet 26 is not formed, a silent film 2 is heated by the heater 26.
Place 7. On the other hand, the base film 21 and ceramic raw laminate 22 fixed on the stand 2o are placed on the side of the base film 211L on which the electrode-embedded ceramic raw sheet 25 is formed. At this time, electrodes 23 are formed on the surface of the raw ceramic laminate 22 by an appropriate method such as transfer or printing. Here, the electrode 23 does not necessarily need to be formed on the surface of the raw ceramic laminate 22. Furthermore, the base film 21 may also be used as necessary. Next, from the state shown in FIG. 1, the electrode-embedded ceramic green sheet 26 formed on the surface of the base film 211L is bonded under heat and pressure to the surface of the ceramic green laminate 22 by the silencer 27.

Next, explanation will be given using FIG. 2. This FIG. 2 is a diagram after the electrode-embedded ceramic green sheet 26 shown in FIG. 1 has been transferred. That is, as shown in FIG. 2, the electrode embedded ceramic green sheet 25 on the base film 211L is transferred to the surface of the ceramic green laminate 22 by the silence 27, and thereby the transferred electrode 28 and the transferred ceramic green sheet 25 are transferred to the surface of the ceramic green laminate 22. A transferred electrode-embedded ceramic green sheet 30 composed of the sheet 29 is formed.

Moreover, FIGS. 3 and 4 show modifications of FIGS. 1 and 2, in which ceramics are formed on the base film 21b on the surface of the ceramic raw laminate 22 on which the electric FM 23 is formed. A state in which the raw ceramic sheet 241 is heat-pressed to form a transferred ceramic raw sheet 29&, and then the electrode-embedded ceramic raw sheet 26 is heat-pressed is shown.

Here, it is also possible to laminate multiple layers by repeating the steps shown in FIGS. 1 and 2 and the steps shown in FIGS. 3 and 4.

Furthermore, FIG. 6 is a diagram for explaining how a raw ceramic sheet with embedded electrodes is manufactured by a screen printing method in an embodiment of the present invention.
33 is an electrode ink film, 33 is a screen frame, 34 is a screen, 36 is a squeegee, 36 is a dielectric slurry IJ-137 is a printed dielectric slurry. As shown in FIG. 5, by printing dielectric slurry 36 on electrode ink film 32 formed on base film 210 using a screen printing method, a raw ceramic sheet with embedded electrodes can be easily manufactured. Can be done.

Next, it will be explained in more detail. First, as the electrode ink for forming the electrode, a commercially available electrode ink was used, which was diluted with a solvent to an appropriate viscosity (hereinafter simply referred to as electrode ink).

Next, a polyethylene terephthalate film (hereinafter referred to as
Using a PET film, the above Ti ink was applied continuously at regular intervals by screen printing using a 400 mesh stainless steel screen (with an emulsion layer thickness of 10 microns). printed on. Here, the shape of the electrode used was 3.5 x 1.0 mm. To dry the electrode ink after printing, a far-infrared oven was connected next to the printing machine to evaporate the solvent in the electrode ink, resulting in an electrode 231L.

Next, how to make dielectric slurry will be explained. First, polyvinyμ butyral resin (hereinafter referred to as PVB resin)
Add 10 parts by weight to a mixture of 23 parts by weight of solvent and 3 parts by weight of plasticizer, and after sufficiently dissolving, add 64 parts by weight of dielectric powder mainly composed of barium titanate with a particle size of about 1 micron. In addition, using a ceramic three-roll mill,
Grind meter (JIS-57ov listed)
The mixture was thoroughly kneaded while being evaluated using a dielectric slurry.

Next, this dielectric slurry was printed on a plurality of electrodes using a 400-mesh stainless steel screen (on which no emulsion layer was formed) by a screen printing method so that it was evenly printed. To print the dielectric slurry, first print the dielectric slurry on a flat sheet, dry it using a hot air circulation dryer, then print the dielectric slurry on a flat sheet, dry it, and then apply the dielectric slurry to the electrode. It was made into an embedded ceramic raw sheet. Here, using a micrometer,
When the film thickness of only the ceramic green sheet of the completed electrode-embedded ceramic green sheet was measured, the thickness of the ceramic green sheet was 16S chron. As described above, the green ceramic sheet was formed into two layers (or two layers), thereby preventing pinholes from forming in the green ceramic sheet. Here, the thickness of the raw ceramic sheet can be adjusted by changing the composition ratio of the components of the dielectric slurry (for example, diluting the dielectric slurry with a solvent); The material of the screen itself.

This can also be done by changing the weaving method, porosity, mesh number, etc.).

Next, a method for manufacturing a multilayer ceramic capacitor using this ceramic raw sheet 25 with embedded electrodes will be explained. First, a raw ceramic laminate 22 having a thickness of 200 microns on which no electrodes were formed was fixed together with the base film 21 on the stand 20 shown in FIG. 1. As shown in FIGS. 3 and 4, as many electrode-embedded green ceramic sheets 26 as required to be laminated were transferred onto this layer. Here, transcription is temperature.

160c and a pressure of 15 kilograms per square centimeter using a silent roller 27 from the side of the base film 21&, after transferring the electrode-embedded ceramic raw sheet 25, the base film 21a was peeled off.

Thereafter, this process was repeated so that the electrodes were alternately shifted as shown in FIG. 7, so that there were 61 layers of electrodes. And finally, to prevent glue during firing and increase mechanical strength? A raw ceramic sheet on which t4M was not formed was transferred to a thickness equivalent to 200 microns. The thus obtained laminate was cut into chips of 2.4 x 16 millimeters, and then fired at 13,000 for 1 hour.

In addition, in order to investigate the influence of the electrode solvent, conventional example (1)
The electrodes were printed directly onto the raw ceramic sheet.

This is done by directly printing the same electrode ink as an internal electrode by screen printing as shown in Figure 8 on a raw ceramic sheet formed on a PICT film with the same composition and thickness as mentioned above, and drying it to form an electrode. It was made into a raw ceramic sheet.

Next, the ceramic raw sheet with the electrode formed thereon is coated with PE
The entire T film was transferred, the PICT film was peeled off, and the electrodes were transferred and laminated to form 51 layers.

The conditions were the same as those described above.

Here, the number of samples was n=100. Next, external electrodes were formed using a conventional method, and the occurrence rate of short circuits was investigated.

The results are shown in Table 1 below.

Table 1 As described above, when using the manufacturing method of multilayer ceramic electronic components according to the present invention, since the electrode ink is dried, both the short circuit occurrence rate and the delamination occurrence rate are lower than that of the conventional method. , it can be seen that it has been greatly improved.

Next, the unevenness on the surface of the electrode-embedded ceramic green sheet after the electrode was embedded was measured.

Here, in order to investigate the effect of using the screen printing method as the electrode embedding method, a method using a bar coater was selected as the conventional embedding method. In other words, as a conventional example (conventional example 2) corresponding to FIG. 8, for the dielectric slurry described above,
A conventional dielectric slurry was obtained by diluting it with a solvent until the viscosity reached approximately 1 void, and then the conventional dielectric slurry was spread on the PET film printed with the electrode ink using a bar coater. . Here, the bar coater was selected and used so that the film thickness of the conventional dielectric slurry after drying was 16 microns.

Table 2 below shows the results of measuring the height of the unevenness caused by the electrodes appearing on the surface of the electrode-embedded ceramic green sheet using a contact type surface roughness meter.

Furthermore, the surface irregularities of the ceramic green laminates were compared after 10 layers had been laminated. The thickness of the electric pupil ink film formed on the surface of the PET film was 9 microns.

Table 2 As described above, by embedding electrodes in a ceramic green sheet using the screen printing method, the occurrence of surface irregularities can be reduced. This is because no emulsion layer is formed on the screen used to print the dielectric slurry, so on the contrary, PE
This is thought to be because the electrode formed on the T film acted as a kind of emulsion layer, reducing the amount of dielectric slurry transferred to the electrode surface. Further, even when the electrodes were formed using 51 layers, the unevenness of the method of the present invention was much smaller than that of the conventional example (2).

Note that the ceramic raw sheet portion of the electrode-embedded ceramic raw sheet used in the present invention has PVB contained therein.
Due to the nature of the resin, it has thermal transferability (or adhesiveness). Further, the thermal transferability (or adhesion) of this electrode-embedded green ceramic sheet varies greatly depending on the content of PVB resin contained in the ceramic green sheet. In other words, the higher the content of PVB resin in the raw ceramic sheet, the better the transferability due to heat, but the more likely it is that delamination will occur during sintering (because the content of ceramic powder is relatively lower). is possible. Therefore, Table 3 shows the relationship between the transferability and the delamination occurrence rate with respect to the amount of resin contained in the raw ceramic sheet for the ceramic powder having the particle size used in the experiment.

(The following is a blank space) Table 3> From Table M3, it can be seen that pvB resins with a concentration of about 10% to 40% by weight have good transferability and are less likely to cause delamination. In particular, it can be seen that around 15% by weight has good transferability and less occurrence of delamination.

Here, as resins having transferability like PVB resins, there are also thermoplastic resins such as acrylic resins, vinyl resins, and hepta-loose derivative resins.

In addition, even if it is a curable resin or polymerizable resin, by adjusting the curing conditions and polymerization conditions appropriately, for example, making it rubber-like,
It can also be used as a type of thermoplastic resin by imparting adhesiveness to the surface.

Further, in the case shown in Figs. 3 and 4, the ceramic green sheet 241L contains a non-transferable ceramic green sheet containing only 6 parts by weight of resin per 100 parts by weight of dielectric powder. Even if sheets are used, they can be laminated by alternately using electrode-embedded ceramic raw sheets of the present invention having excellent transferability.

In the present invention, by using a screen printing method, it is possible to easily and effectively perform printing without patterning the slurry, that is, by printing on a solid surface.

Next, FIG. 6 is a diagram for explaining a method of transferring an electrode-embedded ceramic raw sheet using a heat roller in a second embodiment of the present invention. In FIG. 6, 39 is a heat roller whose temperature is set to a constant temperature by a heater 261L. When the electrode-embedded ceramic green sheet 26 passes between the ceramic green laminate 22 and the heat roller 31, the electrode-embedded ceramic green sheet 26 is transferred to the surface of the Cefmic green laminate 22, and the electrode-embedded ceramic green sheet 26 is transferred to the surface of the Cefmic green laminate 22. It becomes 38. According to this method, the electrode-embedded ceramic green sheet can be transferred continuously.

In the present invention, the transfer may be performed using heat, photoelectron beams, microwaves, X-rays, or the like. Furthermore, by changing the type of PVB resin, the type and amount of plasticizer added, it is possible to improve storage stability, lower the transfer temperature (room temperature), and increase the speed of lamination.

Furthermore, the manufacturing method of the present invention can be applied not only to the multilayer ceramic capacitors described in the above embodiments, but also to multilayer ceramic electronic components such as multilayer ceramic substrates and multilayer varistors.

Effects of the Invention As described above, in the present invention, after drying, a thermoplastic resin is coated on a support formed with a dried electrode. i After applying a ceramic slurry blended to a concentration of 4% or more and 1% or less by screen printing method, the ceramic slurry is dried to create a raw ceramic sheet with electrodes embedded on the support, and then After the electrode-embedded ceramic raw sheet is thermocompressed onto the pond ceramic raw sheet or the pond electrode without peeling off the support, only the support is peeled off, and the electrode-embedded ceramic raw sheet is bonded. By transferring onto the green ceramic sheet or electrode of the pond, the electrode is dried, so the negative effects of the solvent contained in the electrode ink are minimized, and the green ceramic sheet can be handled together with the support. , will not be damaged during handling,
By using the screen printing method when embedding the electrodes in the ceramic slurry, it is possible to effectively prevent the occurrence of surface irregularities caused by the electrodes on the surface of the electrode-embedded ceramic green sheet.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams for explaining the lamination of raw ceramic sheets with embedded electrodes in the present invention, and Figure 3
Figures 1 and 4 are diagrams for explaining modifications of the above-mentioned Figures 1 and 2, and Figure 6 explains how a green ceramic sheet with embedded electrodes is manufactured by a screen printing method in an embodiment of the present invention. FIG. 6 is a diagram for explaining the method of transferring a raw ceramic sheet with embedded electrodes using a heated roller in the second embodiment of the present invention, and FIG. 7 is a diagram showing a part of a multilayer ceramic capacitor. Diagram shown in cross section,
FIG. 8 is a diagram illustrating a cross section of a conventional electrode-embedded sheet. 20.201L-...=...stand, 21.211L, 21
b. 210...Base film, 22...
Ceramic raw laminate, 23... Electrode, 24a.
... Ceramic raw sheet, 26 ... Heater, 2A ... Silence, 28 ... Transferred electrode, 29 ... Transferred Ceramic raw sheet, 3o... Transferred electrode embedded ceramic raw sheet, 32... Electrode ink film, 33...
...Screen frame, 34...Screen,
36... Squeegee, 36... Dielectric slurry, 37... Printed dielectric ink, 3
8... Transferred electrode-embedded ceramic green sheet, 39... Heat roller. Name of agent: Patent attorney Shigetaka Awano and 1 other person20
- 1, 1, 7 raw sheets - - Heater 27 - 4X 20 - 1 (Fig. 6 W - 8 Scrub roller Fig.

Claims (1)

[Claims] On the support formed with the electrode ink film, a ceramic slurry containing a thermoplastic resin of 10% by weight or more and 40% by weight or less after drying is applied by a screen printing method, and then the ceramic slurry is applied. It was dried to produce a green ceramic sheet with embedded electrodes on the support, and then the green ceramic sheet with embedded electrodes was bonded by thermocompression onto another green ceramic sheet or another electrode without peeling off from the support. After that, only the support is peeled off, and the electrode-embedded ceramic green sheet is transferred onto another ceramic green sheet or another electrode.