CN110335767B - Screen printing equipment for multilayer ceramic capacitor and preparation method thereof - Google Patents
Screen printing equipment for multilayer ceramic capacitor and preparation method thereof Download PDFInfo
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- CN110335767B CN110335767B CN201910620019.9A CN201910620019A CN110335767B CN 110335767 B CN110335767 B CN 110335767B CN 201910620019 A CN201910620019 A CN 201910620019A CN 110335767 B CN110335767 B CN 110335767B
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- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 29
- 238000007650 screen-printing Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 101
- 239000000919 ceramic Substances 0.000 claims abstract description 82
- 238000007639 printing Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000003475 lamination Methods 0.000 claims abstract description 20
- 239000010408 film Substances 0.000 claims description 47
- 239000010409 thin film Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 3
- 238000000462 isostatic pressing Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims 1
- 238000012797 qualification Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 8
- 239000002003 electrode paste Substances 0.000 description 6
- 239000011267 electrode slurry Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Capacitors (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a screen printing device of a multilayer ceramic capacitor and a preparation method thereof, wherein the device comprises a printing screen, and screen patterns of the printing screen comprise a plurality of cutting line area patterns, a plurality of product area patterns and a plurality of black block area patterns; arranging and combining a plurality of cutting line area patterns, a plurality of product area patterns and a plurality of black block area patterns according to preset requirements to form a silk screen pattern; the product area graph comprises a plurality of inner electrode graphs; the cutting line area pattern is used for cutting the ceramic film to obtain a laminated body, and the black block area pattern is used for fixing the ceramic film during lamination; wherein the cut line region pattern comprises: a first cutting line area pattern distributed along the X-axis direction of the screen pattern and a second cutting line area pattern distributed along the Y-axis direction of the screen pattern; the device and the method can improve the cutting qualification rate.
Description
Technical Field
The invention relates to the field of manufacturing of multilayer ceramic capacitors, in particular to a screen printing device of a multilayer ceramic capacitor and a preparation method thereof.
Background
With the area of the screen printing electrode pattern of the multilayer ceramic capacitor being larger and the utilization rate of the ceramic film being higher, the size of a single chip of the capacitor is miniaturized continuously, and the printing area of a single-particle capacitor is smaller and smaller, the requirement on the deformation degree of a product area and a cutting line area during the lamination in the manufacturing process of the multilayer ceramic capacitor is smaller and smaller. After the patterns, the lamination and the lamination printed by the conventional screen printing equipment are adopted, because the ceramic membrane has ductility, the deformation quantity of the ceramic membrane after the lamination is larger when the printing area is larger, and the irregular deformation is more easily generated in a product area and a cutting line area, so that the quality problems of chip deviation, waste cutting and the like are caused during cutting, and the qualification rate of the product is seriously influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a screen printing apparatus and a method for manufacturing a multilayer ceramic capacitor capable of reducing the deformation amount of electrode regions and cutting line regions of ceramic sheets stacked after lamination, by which the cutting yield can be improved.
To achieve the above object, according to one aspect of the present invention, there is provided a screen printing apparatus for a multilayer ceramic capacitor, the apparatus including:
the equipment comprises a printing silk screen, wherein silk screen patterns of the printing silk screen comprise a plurality of cutting line area patterns, a plurality of product area patterns and a plurality of black block area patterns; arranging and combining a plurality of cutting line area patterns, a plurality of product area patterns and a plurality of black block area patterns according to preset requirements to form a silk screen pattern; the product area graph comprises a plurality of inner electrode graphs; the cutting line area pattern is used for cutting the ceramic film to obtain a laminated body, and the black block area pattern is used for fixing the ceramic film during lamination; wherein the cut line region pattern comprises: a first cutting line area pattern distributed along the X-axis direction of the screen pattern and a second cutting line area pattern distributed along the Y-axis direction of the screen pattern; the second cutting line region graph comprises a plurality of second blank part graphs and a plurality of second filling graphs except the second blank part graphs, and the second blank part graphs are used for carrying out alignment during cutting;
the first cutting line area pattern comprises a plurality of first blank part patterns and a plurality of first filling patterns except the first blank part patterns, and the first blank part patterns are used for carrying out alignment during cutting; the first filling pattern comprises a plurality of first sub filling patterns distributed along the Y axis and a plurality of first sub blank parts except the first sub filling patterns; the first sub-filling patterns and the first sub-blank parts except the first sub-filling patterns are alternately and uniformly arranged along the Y-axis direction;
when the upper ceramic thin film sheet and the lower ceramic thin film sheet are stacked for cutting, a first blank part graph in the upper ceramic thin film sheet is aligned with a first blank part graph in the lower ceramic thin film sheet, a second blank part graph in the upper ceramic thin film sheet is aligned with a second blank part graph in the lower ceramic thin film sheet, and a first sub-filling graph in the upper ceramic thin film sheet and a first sub-blank part in the lower ceramic thin film sheet have overlapping parts in the vertical direction.
The principle of the invention is that when cutting and stacking, a first blank part pattern in an upper layer ceramic film sheet is aligned with a first blank part pattern in a lower layer ceramic film sheet, a second blank part pattern in the upper layer ceramic film sheet is aligned with a second blank part pattern in the lower layer ceramic film sheet, the upper layer and the lower layer are arranged in a staggered mode in the X-axis direction, namely cutting line areas of the upper layer and the lower layer are stacked in a staggered mode according to the length X, and a first sub-filling pattern in the upper layer ceramic film sheet and a first sub-blank part in the lower layer ceramic film sheet have overlapping portions in the vertical direction. After staggered lamination is carried out according to the size of a corresponding product by the step pitch of X length, the upper layer filling pattern and the lower layer stacked in the blank area of the lower layer just form alternate inlaying to play a role in fixing cutting lines; because the first filling patterns of the upper-layer membrane and the first sub-blank areas of the lower layer are alternately stacked in the stacking process of the cutting areas, the thickness of the stacked first cutting line areas is thinner than that of the product areas, the product areas can be effectively protected during lamination, the deformation of the product areas is reduced, and the cutting qualified rate is improved; in addition, the pattern design printed by the silk screen equipment adopts the blank part of the cutting line area to carry out alignment during cutting, the pattern of the cutting line area is filled with the missing printing inner electrode slurry, and the accumulated thickness of the product area and the cutting line area after lamination can be ensured to be consistent due to the larger printing area of the cutting line area, so that the problem of thickness difference deformation in the traditional design is solved.
Wherein, when two upper and lower ceramic film pieces piled up and cut, at first utilize the blank part to counterpoint, then will two upper and lower diaphragms carry out the dislocation in the X axle direction and overlap, just can make first sub-filling pattern in the ceramic film piece of upper strata and the first sub-blank part in the ceramic film piece of lower floor have overlap portion in vertical direction, then the multilayer extrudees and forms similar mosaic structure, increases fixed firm effect.
The second blank part patterns in the second cutting line region patterns and the second filling patterns except the second blank part patterns are alternately arranged along the Y-axis direction, and a plurality of second blank part patterns and a plurality of second filling patterns except the second blank part patterns are uniformly distributed.
The first blank part patterns and the first filling patterns except the first blank part patterns in the first cutting line region patterns are alternately arranged along the X-axis direction, and the plurality of first blank part patterns and the plurality of first filling patterns except the first blank part patterns are uniformly distributed.
And for the adjacent 2 first filling patterns, part of the first sub filling patterns in one first filling pattern corresponds to part of the sub blank parts in the other first filling pattern in the X-axis direction.
Part of the black block area patterns comprise a plurality of third blank part patterns and a plurality of third filling patterns except the third blank part patterns; the third filling pattern comprises a plurality of third sub filling patterns distributed along the Y axis and a plurality of third sub blank parts except the third sub filling patterns; the third sub-filling patterns and the third sub-blank parts except the third sub-filling patterns are alternately and uniformly arranged along the Y-axis direction; when the upper ceramic film sheet and the lower ceramic film sheet are stacked for cutting, the third sub filling pattern in the upper ceramic film sheet and the third sub blank part in the lower ceramic film sheet have overlapping parts in the vertical direction.
And the tail end of the first filling pattern extending to the product area pattern is a first sub filling pattern.
Wherein, the width of the first sub-filling pattern is b, the width of the inner electrode pattern is b1, and the following conditions are satisfied: 1/2b1 b 2b1, the widths of the second blank part and the first blank part are both a, the margin width of the inner electrode pattern is a1, and the following conditions are satisfied: a is less than or equal to a 1.
In another aspect, the present invention also provides a method of manufacturing a multilayer ceramic capacitor, the method comprising:
preparing a ceramic film, and forming an inner electrode on the ceramic film by silk-screen printing by using the silk-screen printing equipment of any one of claims 1 to 7;
laminating a ceramic film with an internal electrode and cutting the laminated body according to the pattern of the cutting line area and the position identification;
the laminate was sintered to obtain a multilayer ceramic capacitor.
Further, in the method, the ceramic powder, the organic adhesive and the organic solvent are uniformly mixed to obtain ceramic slurry, and the ceramic slurry is cast by adopting a casting method to form the ceramic dielectric film.
Further, in the method, the ceramic film with the inner electrode is stacked to reach the designed layer number, and the laminated body is laminated by isostatic pressing and is aligned according to the alignment identification position for longitudinal and transverse cutting to obtain a laminated body; the laminate was sintered in a sintering furnace to densify the laminate, and a multilayer ceramic capacitor was obtained.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
the device and the method can improve the cutting qualification rate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
FIG. 1 is a graphic design printed by a conventional screen apparatus;
FIG. 2 is a graphic design printed by the screen apparatus of the present invention;
FIG. 3 is a schematic diagram of X-length stacking of the membrane printed with electrode patterns;
FIG. 4 is a schematic view of a product region being stacked in an X-length offset;
FIG. 5 is a schematic view of the staggered stacking of the cutting line regions according to the length X of the invention;
FIG. 6 is a top view of the present invention after the design pattern has been misaligned stack;
FIG. 7 is an enlarged view of a portion of a printed image of the printing apparatus of the present invention;
FIG. 8 is an enlarged view of a portion of the printing apparatus of the present invention after the printed patterns are stacked in a staggered manner;
FIG. 9 is a side cross-sectional view of a ceramic membrane printed with graphics by the printing apparatus of the present invention after stacking and laminating;
FIG. 10 is a flow chart of a method for manufacturing a multilayer ceramic capacitor according to the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
The embodiment of the invention provides a screen printing device for a small-size and large-capacity capacitor, which comprises a printing screen, wherein a screen pattern of the printing screen comprises a cutting line area, a product area and a black block area;
the product area comprises a plurality of patterns printed with the inner electrodes in an arrayed and uniformly distributed manner, and the inner electrode patterns are inner electrodes of products formed on the ceramic film by inner electrode slurry in a screen printing manner; the cutting line area is used for cutting the laminated ceramic film with the internal electrode printing patterns to obtain a laminated body, and comprises a plurality of alternately arranged and uniformly distributed patterns for slurry-penetrating printing of electrode slurry, wherein the cutting line area comprises 2 patterns including a first cutting line area pattern distributed along the X-axis direction of the screen pattern and a second cutting line area pattern distributed along the Y-axis direction of the screen pattern; the first cutting line region pattern has the function of forming an inlaid fixed cutting line region when the membrane is subjected to alternate staggered lamination, so that the design of the cutting line region is also called as an inlaid structure design; the black block area graph is used for penetrating the thick liquid, and half this area also adopts the mosaic structure design, plays the effect of fixed diaphragm when the stromatolite, prevents that the diaphragm from because of static pincher trees in the stromatolite process. The embodiment of the invention also provides a manufacturing method of the multilayer ceramic capacitor, which comprises the following steps: preparing a ceramic film and forming an inner electrode on the ceramic film; laminating a ceramic film with an internal electrode and cutting the laminated body according to the position of the cutting line region alignment identification position; the laminate was sintered to obtain a multilayer ceramic capacitor.
The pattern design (fig. 2) in the screen apparatus of the present invention is compared with the conventional design (fig. 1), and 110 in fig. 1 is a cutting line for cutting the stencil internal electrode paste for alignment; 120 is a product inner electrode of the inner electrode paste for printing leakage; 130 is a black block of the paste of the missing printing inner electrode for laminating and fixing; 140 is a blank part of the cutting line region; 150 is the product blank rim charge part; 160 is a cutting line area; 170 is the product area; the patterns of the electrode slurry subjected to the printing leakage are designed according to the size of an actual product; in the aspect of cutting line design, cutting line 110 is adopted to carry out counterpoint when traditional design cuts, and for the great small-size, the large capacity product of a single-chip ceramic diaphragm printing area, because the electrode piles up the number of piles of layers higher, and chip margin a1 is less, if adopt the figure design of traditional silk screen equipment printing, the ceramic diaphragm that piles up produces anomalous deformation after the lamination easily, and the product appears deforming after the cutting, cuts useless scheduling bad problem.
Referring to fig. 2, in fig. 2, 210 is a blank portion for cutting alignment in the first and second scribe line regions for cutting alignment; 220 is a product inner electrode of the inner electrode paste for printing through; 230 is a black block of the missing printing inner electrode slurry for laminating and fixing, namely a black block area pattern; 240 is a first sub-fill pattern; 241 is a first sub-blank portion; 250, a filling pattern is not embedded in the cutting line area, namely a filling block 250; 260 is a second fill pattern; 270 is a second cut line region; and 280 is a product area. And the patterns of the electrode paste subjected to the screen printing are designed according to the size of an actual product. In the invention, the cutting line of the blank position 210 is aligned during cutting, and in order to prevent the product area 280 and the first and second cutting line areas from generating serious deformation during the lamination process, the filling pattern in the first cutting line area adopts an inlaid structure design, namely, after the filling pattern 240 and the blank area 241 in the cutting line area (shown in figures 3, 4 and 5) are staggered and laminated according to the size of a corresponding product by a step distance of X length in the stacking process, the upper and lower layers stacked by the first sub-filling pattern 240 and the first sub-blank part 241 just form alternate inlaying to play a role of fixing the cutting line; in addition (fig. 9), since the first sub filling patterns 240 and the first sub blank portions 241 are alternately stacked in the stacking process of the cutting regions, the thickness of the stacked first cutting line region is thinner than that of the product region 280, and the product region 280 can be effectively protected during the lamination process, so that the deformation of the product region is reduced, and the cutting yield is improved;
in the pattern printed by the screen printing equipment (figure 6), the filling blocks of the first cutting line area near the product area 280 are in a non-mosaic design, namely the tail end of the first filling pattern extending to the product area pattern is a first sub filling pattern, and a corresponding first sub blank part is not designed for mosaic, (figure 9) the filling blocks 250 are stacked by electrode paste in the alternate staggered stacking process and are consistent with the stacking state of the product area 280, so that the effect of protecting the first row of products near the first cutting line area from deformation caused by thickness difference is achieved, and the product quality is ensured.
In the pattern printed by the screen printing device (fig. 2), the black block area pattern 230 is also partially embedded in the staggered stacking process, so as to fix the membrane and prevent the membrane from being wrinkled due to static electricity in the stacking process, i.e. the partial pattern in the black block area pattern comprises: a plurality of third blank part patterns and a plurality of third filling patterns except the third blank part patterns; the third filling pattern comprises a plurality of third sub filling patterns distributed along the Y axis and a plurality of third sub blank parts except the third sub filling patterns; the third sub-filling patterns and the third sub-blank parts except the third sub-filling patterns are alternately and uniformly arranged along the Y-axis direction; when the upper ceramic film sheet and the lower ceramic film sheet are stacked for cutting, the third sub filling pattern in the upper ceramic film sheet and the third sub blank part in the lower ceramic film sheet have overlapping parts in the vertical direction.
The embodiment of the invention also provides a manufacturing method of the multilayer ceramic capacitor of the implementation mode, which comprises the following steps:
1. preparing a ceramic film and forming an internal electrode on the ceramic film:
firstly, ceramic powder, an organic adhesive and an organic solvent are uniformly mixed to obtain ceramic slurry, and the ceramic slurry is cast to form a ceramic film by adopting a casting method.
And printing the inner electrode slurry on the ceramic film by using a screen printing process to form an inner electrode pattern, thereby obtaining the ceramic film with the inner electrode pattern.
Referring to fig. 1 and 2, compared with the conventional screen pattern (fig. 1), the screen pattern (fig. 2) printed by the screen printing apparatus of the present invention adopts an inlaid structure design in the first cutting line region, that is, after the first sub-fill pattern 240 and the first sub-blank portion 241 in the cutting line region are staggered and laminated according to the size of the corresponding product by the step length of X length in the stacking process, the stacked upper and lower layers of the first sub-fill pattern 240 and the first sub-blank portion 241 are just inlaid alternately to fix the cutting lines; in order to ensure the consistency of the cutting line region and the product region in the dislocation stacking process and ensure the printing effect when the electrode paste is printed in a missing mode, 1/2b1 is more than or equal to b and less than or equal to 2b1, as shown in FIG. 7, the width of the first sub-filling pattern is b, and the width of the inner electrode pattern is b 1.
2. And laminating the ceramic film with the internal electrode printing pattern, and cutting the ceramic film in the alignment identification position to obtain a laminated body.
The ceramic thin films having the internal electrodes are laminated to reach the designed number of layers, and the lamination process is staggered in the cutting line region as shown in fig. 5; in order to ensure the alignment precision during cutting, the widths of the second blank part and the first blank part are both a, the margin width of the inner electrode pattern is a1, and the following conditions are met: a is less than or equal to a 1.
After lamination by isostatic pressing, a side cross-sectional view as shown in fig. 9 was formed in the dicing line region, and cut by alignment in accordance with the size of the corresponding product, to obtain a laminate.
By adopting the silk screen pattern design printed by the silk screen equipment, the mosaic structure design of the cutting line area can form an effective locking area during lamination, the deformation of the product area during lamination is reduced, meanwhile, the tail end of the first filling pattern extending to the product area pattern adopts the non-mosaic design, and a protection area with the same thickness as the product area can be formed after lamination, as shown in figure 9, so that the cutting qualification rate is improved.
3. The laminate was sintered to obtain a multilayer ceramic capacitor.
The laminate was sintered in a sintering furnace to densify the laminate, and a multilayer ceramic capacitor was obtained.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The screen printing equipment for the multilayer ceramic capacitor is characterized by comprising a printing screen, wherein screen patterns of the printing screen comprise a plurality of cutting line area patterns, a plurality of product area patterns and a plurality of black block area patterns; arranging and combining a plurality of cutting line area patterns, a plurality of product area patterns and a plurality of black block area patterns according to preset requirements to form a silk screen pattern; the product area graph comprises a plurality of inner electrode graphs; the cutting line area pattern is used for cutting the ceramic film to obtain a laminated body, and the black block area pattern is used for fixing the ceramic film during lamination; wherein the cut line region pattern comprises: a first cutting line area pattern distributed along the X-axis direction of the screen pattern and a second cutting line area pattern distributed along the Y-axis direction of the screen pattern; the second cutting line region patterns comprise a plurality of second blank part patterns and a plurality of second filling patterns except the second blank part patterns, and the second blank part patterns are used for carrying out alignment during cutting;
the first cutting line area pattern comprises a plurality of first blank part patterns and a plurality of first filling patterns except the first blank part patterns, and the first blank part patterns are used for carrying out alignment during cutting; the first filling pattern comprises a plurality of first sub filling patterns distributed along the Y axis and a plurality of first sub blank parts except the first sub filling patterns; the first sub-filling patterns and the first sub-blank parts except the first sub-filling patterns are alternately and uniformly arranged along the Y-axis direction;
when the upper ceramic thin film sheet and the lower ceramic thin film sheet are stacked for cutting, a first blank part graph in the upper ceramic thin film sheet is aligned with a first blank part graph in the lower ceramic thin film sheet, a second blank part graph in the upper ceramic thin film sheet is aligned with a second blank part graph in the lower ceramic thin film sheet, and a first sub-filling graph in the upper ceramic thin film sheet and a first sub-blank part in the lower ceramic thin film sheet have overlapping parts in the vertical direction.
2. The screen printing apparatus of a multilayer ceramic capacitor according to claim 1, wherein the second blank part patterns and the second fill patterns except for the second blank part patterns in the second cutting line region pattern are alternately arranged in the Y-axis direction, and a plurality of the second blank part patterns and a plurality of the second fill patterns except for the second blank part patterns are uniformly distributed.
3. The screen printing apparatus of a multilayer ceramic capacitor according to claim 1, wherein the first blank portion patterns and the first filling patterns except the first blank portion patterns in the first cutting line region pattern are alternately arranged in the X-axis direction, and a plurality of the first blank portion patterns and a plurality of the first filling patterns except the first blank portion patterns are uniformly distributed.
4. The screen printing apparatus of a multilayer ceramic capacitor according to claim 1, wherein, for the adjacent 2 first fill patterns, a part of the first sub-fill patterns in one of the first fill patterns corresponds to a part of the first sub-blank portions in the other first fill pattern in the X-axis direction.
5. The screen printing apparatus for a multilayer ceramic capacitor according to claim 1, wherein a part of the pattern in the black block region pattern comprises: a plurality of third blank part patterns and a plurality of third filling patterns except the third blank part patterns; the third filling pattern comprises a plurality of third sub filling patterns distributed along the Y axis and a plurality of third sub blank parts except the third sub filling patterns; the third sub-filling patterns and the third sub-blank parts except the third sub-filling patterns are alternately and uniformly arranged along the Y-axis direction; when the upper ceramic film sheet and the lower ceramic film sheet are stacked for cutting, the third sub filling pattern in the upper ceramic film sheet and the third sub blank part in the lower ceramic film sheet have overlapping parts in the vertical direction.
6. The screen printing apparatus for a multilayer ceramic capacitor according to claim 1, wherein the end of the first fill pattern extending toward the product region pattern is a first sub fill pattern.
7. The screen printing apparatus of a multilayer ceramic capacitor according to claim 1, wherein the width of the first sub-fill pattern is b, and the width of the internal electrode pattern is b1, satisfying the following condition: 1/2b1 b 2b1, the widths of the second blank part and the first blank part are both a, the margin width of the inner electrode pattern is a1, and the following conditions are satisfied: a is less than or equal to a 1.
8. A method of making a multilayer ceramic capacitor, the method comprising:
preparing a ceramic film, and forming an inner electrode on the ceramic film by silk-screen printing by using the silk-screen printing equipment of any one of claims 1 to 7;
laminating a ceramic film with an internal electrode and cutting the laminated body according to the pattern of the cutting line area and the position identification;
the laminate was sintered to obtain a multilayer ceramic capacitor.
9. The method of claim 8, wherein the ceramic powder, the organic binder and the organic solvent are mixed uniformly to obtain a ceramic slurry, and the ceramic slurry is cast by a casting method to form the ceramic dielectric film.
10. The method of manufacturing a multilayer ceramic capacitor according to claim 8, wherein the ceramic thin films having the internal electrodes are laminated to a designed number of layers, laminated by isostatic pressing and cut in cross-direction at the alignment recognition positions to obtain a laminate; the laminate was sintered in a sintering furnace to densify the laminate, and a multilayer ceramic capacitor was obtained.
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| CN115384178B (en) * | 2022-09-30 | 2024-02-06 | 潮州三环（集团）股份有限公司 | Screen printing equipment for capacitor and preparation method of capacitor |
| CN116313519A (en) * | 2023-02-14 | 2023-06-23 | 南充三环电子有限公司 | Preparation method of internal electrode high-precision stacked chip type multilayer ceramic capacitor |
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