Printing screen of MLCC (multilayer ceramic capacitor)
By setting stop lines and Mark points on the outer edge of the border cutting area on the printing screen of MLCC and arranging them in a centrally symmetrical manner, the problem of identification difficulties in the secondary drying process of printing is solved, and direct stacking operation without rewinding and unwinding is realized, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202423276415.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-28
AI Technical Summary
In the MLCC production process, the secondary drying process during printing causes the stop line and mark point in the ceramic dielectric film roll to reverse direction, making them unrecognizable and requiring rewinding and unwinding operations, which reduces production efficiency.
Design a printing screen for MLCCs, setting stop lines and mark dots outside the border cutting area and arranging them symmetrically around the electrode pattern area. This ensures that the ceramic dielectric film can be detected in advance when the conveying direction is consistent, avoiding repeated unwinding and rewinding operations.
It improved the success rate of testing, shortened the production process, increased production efficiency, and reduced production costs.
Smart Images
Figure CN223520423U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of chip multilayer ceramic capacitor printing, and particularly relates to a printing screen plate for MLCC. BACKGROUND
[0002] With the rapid development of electronic information technology, as one of the three electronic components, the chip multilayer ceramic capacitor (MLCC) is constantly developing towards miniaturization, high capacitance and high frequency. The MLCC is formed by stacking the inner electrodes arranged in a staggered manner, sintering at high temperature to form a ceramic chip, and then sealing the metal outer electrodes at both ends of the chip to form a structure similar to a monolith.
[0003] The production process of the MLCC generally includes the following steps in sequence: batching, casting, printing, layering, laminating, cutting, degassing, chamfering and testing. In the printing process, the inner electrode paste is printed on the ceramic film by the printing screen plate, and the clear and complete ceramic dielectric film is obtained after drying. Then, the ceramic dielectric film is wound into a reel, and the reel is unwound in the layering process.
[0004] In actual production, the ceramic film printed with the inner electrode paste is detected after drying. If the drying degree does not meet the standard, the reel needs to be dried again, that is, a second drying process is needed. In the printing process, in addition to printing the inner electrode, a stop line for stopping recognition of the film and a Mark point for positioning and cutting recognition of the film are also printed simultaneously. The stop line and the Mark point are used for positioning and recognizing the stop line and the Mark point in the layering process, so as to perform the layering operation after cutting the single ceramic film. The stop line and the Mark point are usually printed at specific positions of the ceramic film for recognition. Therefore, after the ceramic dielectric film reel is dried again and wound, the stop line and the Mark point in the ceramic dielectric film reel are reversed, which cannot be normally recognized, so that the subsequent layering operation needs to be performed after the reel is wound and unwound again, which prolongs the production process and reduces the production efficiency. UTILITY MODEL CONTENT
[0005] Therefore, the present application provides a printing screen plate for MLCC, which can solve the technical problem of the second drying process in printing, and can enter the layering process without winding and unwinding the ceramic dielectric film reel after drying again, thereby improving the production efficiency and reducing the production cost.
[0006] The above object of the present application is achieved by the following technical scheme:
[0007] The present application provides a printing screen plate for MLCC, which comprises:
[0008] a mesh version body;
[0009] an electrode pattern region, which is arranged in a rectangular shape on the mesh version body, and which is staggeredly arranged with a plurality of groups of inner electrode patterns;
[0010] a frame cutting region, which is arranged in a rectangular shape to surround the electrode pattern region, and which is provided with a plurality of cutting line patterns corresponding to the inner electrode patterns;
[0011] a first stop line pattern, which is arranged outside a first side of the frame cutting region;
[0012] a first Mark point pattern, which is arranged outside the first side of the frame cutting region; the first Mark point pattern is different from and located differently from the first stop line pattern;
[0013] a second stop line pattern, which is the same as the first stop line pattern and is arranged outside a second side of the frame cutting region, wherein the second side is opposite to the first side, and the second stop line pattern is symmetrically arranged with the first stop line pattern with respect to a center of the electrode pattern region;
[0014] a second Mark point pattern, which is the same as the first Mark point pattern and is arranged outside the second side of the frame cutting region, and the second Mark point pattern is symmetrically arranged with the first Mark point pattern with respect to the center of the electrode pattern region.
[0015] In an exemplary embodiment, the first stop line pattern and the second stop line pattern are in a rectangular shape, and the long side direction thereof is perpendicular to the first side or the second side.
[0016] In an exemplary embodiment, the first Mark point pattern includes a plurality of first sub Mark point patterns, and the second Mark point pattern includes a plurality of second sub Mark point patterns, the first sub Mark point patterns and the second sub Mark point patterns are one-to-one corresponding and symmetrically arranged with respect to the center of the electrode pattern region, and a corresponding pair of the first sub Mark point pattern and the second sub Mark point pattern are the same.
[0017] In an exemplary embodiment, the first sub Mark point pattern and the second sub Mark point pattern are located on the extension line of the center line of the electrode pattern region and on both sides thereof.
[0018] In an exemplary embodiment, the first stop line and the second stop line are located on both sides of the extension line of the center line of the electrode pattern region.
[0019] In an exemplary embodiment, the inner electrode pattern is rectangular, and the long side direction of the rectangle is parallel to the first side.
[0020] In an exemplary embodiment, the four corners of the frame cutting area are provided with support patterns, and the cutting line pattern is located between every two support patterns.
[0021] In an exemplary embodiment, the electrode pattern area is provided with a plurality of groups of electrode sub-pattern areas, and the electrode sub-pattern areas are provided with inner cutting line patterns.
[0022] In an exemplary embodiment, both ends of each inner cutting line pattern are provided with the support pattern.
[0023] In an exemplary embodiment, the support pattern is composed of four squares of the same size, and the four squares are arranged in a 2x2 matrix.
[0024] The present application has the following beneficial effects:
[0025] The printing screen of the MLCC of the embodiment of the present application sets the stop line pattern and the Mark point pattern on the outside of the frame cutting area, so that the stop line pattern and the Mark point pattern have greater independence and are more convenient to be detected, thereby improving the detection success rate. When the conveying direction of the ceramic dielectric film is consistent with the front and back direction of the stop line pattern and the Mark point pattern, the stop line pattern and the Mark point pattern can also be detected in advance, and the vision detection device and the cutting device of the laminator can be installed staggeredly, thereby obtaining greater installation freedom and more flexible installation space. The embodiment of the present application also sets the stop line pattern and the Mark point pattern in a center-symmetrical manner of the electrode pattern area, so that the ceramic dielectric film after being reversely wound does not need to be wound and unwound for multiple times, but can directly enter the subsequent lamination operation, thereby shortening the production process and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 FIG. 1 is a structural schematic diagram of a printing screen of an MLCC in an exemplary embodiment;
[0027] Figure 2 FIG. 2 is a structural schematic diagram of a printing screen of an MLCC in an exemplary embodiment;
[0028] Figure 3 FIG. 3 is a structural schematic diagram of a printing screen of an MLCC in an exemplary embodiment.
[0029] REFERENCE SIGNS:
[0030] 100, printing screen of an MLCC;
[0031] 10, electrode pattern area; 11, inner electrode pattern; 12, electrode sub-pattern area;
[0032] 20, frame cutting area; 21, cutting line pattern; 22, first side edge; 23, second side edge; 24, support pattern; 25, inner cutting line pattern;
[0033] 31, first stop line pattern; 32, second stop line pattern;
[0034] 41, first Mark point pattern; 411, first sub-Mark point pattern; 42, second Mark point pattern; 421, second sub-Mark point pattern. DETAILED DESCRIPTION
[0035] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the use of "including", "comprising", or "having" and variations thereof herein are meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
[0036] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0037] In addition, if there are terms such as "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0038] In the present application, unless specifically defined and limited otherwise, if there are terms such as "mount", "connect", "connect", "fix", etc., these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0039] In the present application, unless specifically defined and limited otherwise, if there are similar descriptions such as "first feature on" or "second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0040] In view of the technical problems of the printing secondary drying process in the background art, the present application provides a printing screen plate of MLCC, which can be applied to screen printing, plate screen printing, intaglio roller printing or relief roller printing, etc. The printing screen plate can be a screen printing screen pattern, a plate screen printing screen pattern, or a screen pattern after intaglio roller printing or relief roller printing. As shown in the figure, Figures 1-3 In one embodiment, the printing screen plate 100 of the MLCC includes a screen body (not shown) and an electrode pattern area 10 disposed on the screen body, a frame cutting area 20 disposed on the periphery of the electrode pattern area 10, and a first stop line pattern 31, a second stop line pattern 32, a first Mark point pattern 41 and a second Mark point pattern 42 disposed on the periphery of the frame cutting area 20. Among them, according to the specific product design and manufacturing process requirements, the screen body is usually made of metal wire or organic fiber wire (such as stainless steel, nickel, polyester, nylon, etc.) woven screen gauze and prepared mask pattern to form a screen screen; It can also be etched on a stainless steel sheet to form a plate screen; Or a wear-resistant metal roller is engraved into a roller screen. In the printing process, the internal electrode paste penetrates through the mask designed and customized by the screen body, the etched pattern, and can be transferred and printed on the ceramic film through the hollow or raised pattern.
[0041] Specifically, the electrode pattern area 10 is arranged in a rectangular shape on the mesh version body, and the electrode pattern area 10 is arranged in a staggered array with multiple groups of inner electrode patterns 11. The frame cutting area 20 is arranged in a rectangular shape around the electrode pattern area 10, and the frame cutting area 20 is provided with multiple cutting line patterns 21 corresponding to the inner electrode patterns 11. The cutting line patterns 21 are used to cut the stacked body into single MLCC chips along the direction of the patterns after the MLCC stacking is completed. Therefore, the cutting line patterns 21 are usually arranged in a rectangular shape with a small width.
[0042] The first stop line pattern 31 and the second stop line pattern 32 are used to define and control the boundary of the electrode pattern. During the conveying process of the ceramic dielectric film, the corresponding CCD camera of the laminator recognizes the stop line pattern and stops the conveying of the ceramic dielectric film. The laminator then detects the Mark point pattern through other CCD cameras to position and cut the ceramic dielectric film. Therefore, in this embodiment, in order to facilitate the installation of the visual detection equipment and cutting equipment of the laminator, the first stop line pattern 31, the second stop line pattern 32, the first Mark point pattern 41 and the second Mark point pattern 42 are arranged in sequence on the front and back sides of the ceramic dielectric film in the conveying direction.
[0043] Specifically, as shown in Figures 1-3 , the first stop line pattern 31 and the first Mark point pattern 41 are arranged outside the first side edge 22 of the frame cutting area 20; the second stop line pattern 32 and the second Mark point pattern 42 are arranged outside the second side edge 23 of the frame cutting area 20, and the second side edge 23 is opposite to the first side edge 22.
[0044] Among them, the first stop line pattern 31 and the second stop line pattern 32 are the same shape and are symmetrically arranged with respect to the center of the electrode pattern area 10; the first Mark point pattern 41 and the second Mark point pattern 42 are the same shape, and the first stop line pattern 31 and the first Mark point pattern 41 are different shapes and are symmetrically arranged with respect to the center of the electrode pattern area 10.
[0045] In this embodiment, the stop line pattern and the Mark point pattern can be any pattern, which can be a rectangle, a square or a circle, etc. In the example of Figure 1 , the stop line pattern is a rectangle, and the Mark point pattern is a circle.
[0046] The printing screen plate of the MLCC of the embodiment of the present application sets the stop line pattern and the Mark point pattern on the outside of the frame cutting area, so that the stop line pattern and the Mark point pattern have greater independence and are more convenient to be detected, and the detection success rate is improved; when the conveying direction of the ceramic dielectric film is consistent with the front and back direction of the stop line pattern and the Mark point pattern, the stop line pattern and the Mark point pattern can also be detected in advance, and the visual detection device and the cutting device of the laminator can be installed staggeredly, so that greater installation freedom and more flexible installation space are obtained; the embodiment of the present application also sets the stop line pattern and the Mark point pattern in a center-symmetrical manner of the electrode pattern area, so that the ceramic dielectric film after being reversely wound does not need to be wound and unwound for multiple times, but can directly enter the subsequent lamination operation, the production process is shortened, and the production efficiency is improved.
[0047] In a preferred embodiment, as shown in Figure 1 The first stop line pattern 31 and the second stop line pattern 32 are in a rectangular shape, and the long side direction is perpendicular to the first side 22 or the second side 23.
[0048] In actual application, the settings of Mark points of different laminators are not the same, that is, the Mark points of the screen corresponding to the laminator produced by the manufacturer A cannot be recognized on the laminator produced by the manufacturer B. That is to say, the Mark points of the same printing screen cannot be compatible with the laminators produced by different equipment manufacturers. In view of this problem, as shown in Figure 3 In an embodiment, the first Mark point pattern 41 includes a plurality of first sub-Mark point patterns 411, and the second Mark point pattern 42 includes a plurality of second sub-Mark point patterns, the first sub-Mark point patterns and the second sub-Mark point patterns are one-to-one corresponding and symmetrically arranged with respect to the center of the electrode pattern area 10, and a corresponding pair of first sub-Mark point patterns and second sub-Mark point patterns are the same.
[0049] Preferably, as shown in Figure 3 The first sub-pattern and the second sub-pattern are located on the extension line of the center line of the electrode pattern area 10 and on both sides thereof.
[0050] In Figure 3 the example, the first stop line and the second stop line are also located on the extension line of the center line of the electrode pattern area 10 and on both sides thereof.
[0051] As Figures 1-3As shown, preferably, the inner electrode pattern is rectangular, and the long side of the rectangle is parallel to the first side 22. This allows the printing direction to be set from left to right as shown in the figure when the conveying direction of the ceramic dielectric film is consistent with the front-to-back direction of the stop line pattern and the mark point pattern. The squeegee direction is parallel to the length direction of the inner electrode pattern, which can reduce the stretching or compression of the electrode pattern caused by the squeegee force. This better maintains the geometry of the electrode, thereby ensuring the consistency of electrical performance.
[0052] like Figures 1-3 As shown, preferably, support patterns 24 are provided at the four opposite corners of the border cutting area 20, and the cutting line patterns 21 are located between each pair of support patterns 24. The support patterns 24 are used to support the stability of the entire printed pattern.
[0053] like Figures 2-3 As shown, preferably, the electrode pattern area 10 is provided with multiple sets of electrode sub-pattern areas 12, and the electrode sub-pattern areas 12 are provided with inner cutting line patterns 25. Preferably, there are 4 or 16 electrode sub-pattern areas 12, arranged in a 2x2 or 4x4 matrix within the border cutting area 20.
[0054] exist Figures 2-3 In the example, to facilitate the support of the graphics after subsequent cutting, each inner cutting line graphic 25 is provided with a support graphic 24 at both ends.
[0055] exist Figures 2-3 In the example, the supporting figure 24 consists of four squares of the same size, arranged in a 2x2 matrix, so that the entire figure can be divided into four sub-figures along the middle gap of the squares.
[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims, and the specification can be used to interpret the content of the claims.
Claims
1. A printing screen plate for an MLCC, characterized by, The printing screen plate comprises: a screen body; a rectangular electrode pattern region arranged on the screen body, the electrode pattern region being staggered arrayed with a plurality of inner electrode patterns; a rectangular frame cutting region surrounding the electrode pattern region, the frame cutting region being provided with a plurality of cutting line patterns corresponding to the inner electrode patterns; a first stop line pattern arranged outside a first side of the frame cutting region; a first Mark point pattern arranged outside the first side of the frame cutting region, the first Mark point pattern being different from the first stop line pattern; a second stop line pattern identical to the first stop line pattern and arranged outside a second side of the frame cutting region, the second side being opposite to the first side, and the second stop line pattern being symmetrically arranged with the first stop line pattern relative to the center of the electrode pattern region; a second Mark point pattern identical to the first Mark point pattern and arranged outside the second side of the frame cutting region, the second Mark point pattern being symmetrically arranged with the first Mark point pattern relative to the center of the electrode pattern region.
2. The printing screen plate of claim 1, wherein: the first stop line pattern and the second stop line pattern are rectangular, and the long side direction of the rectangular is perpendicular to the first side or the second side.
3. The printing screen plate of claim 2, wherein: the first Mark point pattern comprises a plurality of first sub Mark point patterns, and the second Mark point pattern comprises a plurality of second sub Mark point patterns, the first sub Mark point patterns and the second sub Mark point patterns are symmetrically arranged relative to the center of the electrode pattern region, and a corresponding pair of the first sub Mark point pattern and the second sub Mark point pattern are identical.
4. The printing screen plate of claim 3, wherein: the first sub Mark point pattern and the second sub Mark point pattern are located on the extension line of the center line of the electrode pattern region and on both sides thereof.
5. The printing screen plate of claim 4, wherein: the first stop line and the second stop line are located on both sides of the extension line of the center line of the electrode pattern region.
6. The printing screen plate of claim 1, wherein: the inner electrode pattern is rectangular, and the long side direction of the rectangular is parallel to the first side.
7. The printing screen plate of claim 1, wherein: four support patterns are arranged at the four corners of the frame cutting region, and the cutting line pattern is located between any two of the support patterns.
8. The printing screen plate of claim 7, wherein: a plurality of electrode sub-pattern regions are arranged in the electrode pattern region, and an inner cutting line pattern is arranged between the electrode sub-pattern regions.
9. The printing screen plate of claim 8, wherein: Two ends of each of the inner cutting line patterns are provided with the support patterns.
10. The printing screen for MLCC according to claim 9, wherein: The support patterns are composed of four squares of the same size, and the four squares are arranged in a 2x2 matrix.