A multi-layer screen

Abstract

This invention relates to the field of screen printing technology and includes a pattern layer and a first to an Nth reinforcing layer. The first to Nth reinforcing layers are stacked sequentially from bottom to top on top of the pattern layer. Both the pattern layer and the first to Nth reinforcing layers contain multiple grid lines that correspond one-to-one, forming one-to-one openings between the grid lines. Each opening contains multiple connecting lines, and the opening is divided into multiple perforations by the connecting lines. This invention effectively reduces the risk of screen printing failure due to opening folding or unevenness caused by the lack of connecting structures within the narrow openings. It effectively increases the number of connecting structures, thereby increasing the strength of the grid line alignment and extending the screen's lifespan. It enhances the strength of the grid line alignment while minimizing negative impacts on silver paste consumption. It also helps the silver paste fill the area directly below the connecting lines of the pattern layer openings.

Description

Technical Field

[0001] This utility model relates to the field of mesh technology, specifically to a multi-layer mesh screen. Background Technology

[0002] Traditional woven mesh suffers from higher silver paste consumption compared to fully open electroformed stencils without connecting structures, due to the wire diameter blocking the silver paste, while maintaining the same efficiency. Simultaneously, fully open stencils without connecting structures suffer from severe strength mismatch in the warp and weft directions because they lack connecting structures within the openings. In the direction of the opening extension (grid line extension), the rest is solid metal except for the opening itself. Typically, the width ratio of the opening to the grid line is around 1:100, so the strength of the stencil in the opening extension direction is close to that of pure electroformed metal. However, in the grid line arrangement direction, the width of the metal connecting block is less than 1 / 10 of the length of a single opening, resulting in significantly lower strength in this direction compared to the grid line (opening) extension direction. Furthermore, the lack of any connecting structures within the openings makes the stencil prone to folding and unevenness during manufacturing, leading to stencil failure and a shorter lifespan. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a multi-layer screen printing plate. This plate can effectively reduce the risk of screen printing plate failure due to opening folding or unevenness caused by the lack of connecting structures within the slender openings during manufacturing. It can effectively increase the number of connecting structures, thereby increasing the strength of the grid line alignment and extending the service life of the screen printing plate. It can enhance the strength of the grid line alignment while having a minimal negative impact on silver paste consumption. It can also help the silver paste fill the area directly below the connecting lines of the pattern layer openings.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: it comprises a pattern layer and a first to an Nth reinforcement layer; the first to Nth reinforcement layers are sequentially stacked on top of the pattern layer from bottom to top; both the pattern layer and the first to Nth reinforcement layers contain multiple grid lines that correspond one-to-one with each other, and the grid lines form openings that correspond one-to-one with each other. Each opening contains multiple connecting lines, and the opening is divided into multiple perforations by the multiple connecting lines; the mesh count of the perforations in each opening of the first to Nth reinforcement layers is greater than or equal to the mesh count of the perforations in each opening of the pattern layer, and not greater than 200 meshes; the mesh count of the perforations in each opening of the pattern layer is less than or equal to 100 meshes; the connecting lines of adjacent layers in the pattern layer and the first to Nth reinforcement layers are staggered, and the stagger difference is greater than 20 μm.

[0005] Furthermore, the grid lines, connecting lines, and openings are an integral structure.

[0006] Furthermore, N is greater than or equal to 2, and the odd-numbered layers in the first to Nth enhancement layers are odd-numbered enhancement layers, and the even-numbered layers are even-numbered enhancement layers; the odd-numbered enhancement layers and even-numbered enhancement layers are alternately set above the graphics layer.

[0007] Furthermore, in a whole consisting of a graphics layer, an odd enhancement layer, and an even enhancement layer, the width of the openings in each layer increases sequentially from bottom to top.

[0008] Furthermore, the openings of the odd-numbered enhancement layers and the even-numbered enhancement layers are both centered relative to the opening of the graphics layer.

[0009] Furthermore, the number of perforations in each opening of the odd-numbered enhancement layer and the even-numbered enhancement layer is the same and is an integer multiple of the number of perforations in each opening of the pattern layer.

[0010] Furthermore, in the graphic layer, odd enhancement layer, and even enhancement layer, the projection of the upper layer's connecting line equally divides the perforations between two adjacent connecting lines in the lower layer.

[0011] Furthermore, the projections of the connecting lines in the odd-numbered enhancement layers correspond one-to-one; the projections of the connecting lines in the even-numbered enhancement layers also correspond one-to-one.

[0012] Furthermore, the thickness of the graphic layer is greater than or equal to 5 μm.

[0013] Furthermore, the odd-numbered reinforcement layers and the even-numbered reinforcement layers have the same thickness.

[0014] Furthermore, the thickness of the odd-numbered enhancement layer and the even-numbered enhancement layer is equal to the thickness of the graphics layer.

[0015] Furthermore, the width of the opening in the patterned layer is 5-20 μm.

[0016] Furthermore, the width of the connecting lines of the graphic layer is equal to or less than the width of its opening.

[0017] Furthermore, the width of the connecting lines in the odd-numbered enhancement layers and even-numbered enhancement layers is equal to or greater than the width of the connecting lines in the graphics layers, and the width of the connecting lines in the odd-numbered enhancement layers and even-numbered enhancement layers increases sequentially from bottom to top, with the width of the topmost connecting line being less than or equal to 15μm.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a multi-layer screen printing plate with a mesh count of less than or equal to 100 meshes in the opening of the graphic layer. That is, the number of wire diameters blocking the silver paste from falling is more than 80% less than that of mesh screen printing. Under the premise of the same efficiency, the silver paste consumption is close to that of a fully open screen printing plate, which has a great advantage over mesh screen printing plates in terms of silver paste consumption. Due to the existence of the connecting structure, the risk of the screen printing plate being scrapped during the manufacturing process due to the lack of any connecting structure in the slender opening is effectively reduced. The number of connecting structures can be effectively increased, thereby increasing the strength of the grid line arrangement direction and improving the service life of the screen printing plate.

[0019] This invention provides a multi-layer screen printing stencil where the connecting lines between the odd-numbered and even-numbered reinforcement layers are suspended above the pattern layer. Therefore, the connecting lines do not obstruct the flow of silver paste, thus enhancing the strength of the screen's grid alignment direction without negatively impacting silver paste consumption. From the pattern layer to the Nth reinforcement layer, the width of the corresponding openings increases sequentially. The overall screen's opening cross-section is funnel-shaped, which is advantageous for silver paste flow, helping to fill the area directly below the connecting lines of the pattern layer openings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the graphic layer structure in this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the odd-numbered reinforcement layer in this utility model.

[0022] Figure 3 This is a schematic diagram of the even-numbered reinforcement layer in this utility model.

[0023] Figure 4 This is a diagram showing the superimposed state of the graphic layer, the first reinforcement layer, and the second reinforcement layer in this utility model.

[0024] Figure 5 yes Figure 4 Cross-sectional view of BB in the middle.

[0025] Figure 6 This is a schematic diagram showing the positions of the connecting lines in the graphic layer, the first reinforcing layer, and the second reinforcing layer of this utility model.

[0026] Figure 7 yes Figure 1 Enlarged view of section A.

[0027] Explanation of reference numerals in the attached figures:

[0028] Graphics layer 1, odd enhancement layer 2, even enhancement layer 3, grid line 4, opening 5, perforation 5-1, connector line 6. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] like Figures 1-7 As shown, this specific embodiment adopts the following technical solution: It includes a graphic layer 1 and first to Nth enhancement layers; the first to Nth enhancement layers are stacked sequentially from bottom to top on top of the graphic layer 1 (i.e., from bottom to top, they are the graphic layer, the first enhancement layer, the second enhancement layer, the third enhancement layer, the fourth enhancement layer... the Nth enhancement layer); each of the first to Nth enhancement layers includes multiple grid lines 4 that correspond one-to-one with each other, and the grid lines 4 form openings 5 ​​that correspond one-to-one with each other. Multiple connecting lines 6 are provided in each opening 5; the opening 5 is divided into multiple perforations 5-1 by the multiple connecting lines 6; the mesh number of the perforations 5-1 in each opening 5 in the graphic layer 1 is less than or equal to 100 meshes; N is greater than or equal to 2, the odd-numbered layers in the first to Nth enhancement layers are odd-numbered enhancement layers 2, and the even-numbered layers are even-numbered enhancement layers 3; the odd-numbered enhancement layers 2 and even-numbered enhancement layers 3 are alternately arranged above the graphic layer 1;

[0031] The mesh count of the perforations 5-1 in each opening 5 of the first to Nth reinforcement layers is greater than or equal to the mesh count of the perforations 5-1 in each opening 5 of the pattern layer 1, and not greater than 200 meshes; a preferred embodiment is that the mesh count of the perforations 5-1 in each opening 5 of the first reinforcement layer, the second reinforcement layer, the third reinforcement layer, the fourth reinforcement layer... the Nth reinforcement layer is the same and is an integer multiple of the mesh count of the perforations 5-1 in each opening 5 of the pattern layer 1;

[0032] The width of opening 5 in pattern layer 1 is 5-20µm; the width of opening 5 in the first reinforcement layer, second reinforcement layer, third reinforcement layer, fourth reinforcement layer... Nth reinforcement layer is greater than the width of opening 5 in pattern layer 1, and increases sequentially. They are all arranged symmetrically left and right with reference to the centerline of opening 5 in pattern layer 1 (e.g., ...). Figure 5 (as shown)

[0033] The connecting lines 6 in the opening 5 of the first enhancement layer are staggered relative to the connecting lines 6 in the opening 5 of the graphic layer 1. The projection of the connecting lines 6 in the opening 5 of the first enhancement layer onto the graphic layer 1 divides the perforations 5-1 in the graphic layer 1 into several equally divided regions. For example, the opening 5 of the first enhancement layer and the opening 5 of the graphic layer 1 have the same mesh count, and the connecting lines 6 in the opening 5 of the first enhancement layer are all located at the midpoint of adjacent connecting lines 6 in the corresponding opening 5 of the graphic layer 1 (e.g., ...). Figure 6(As shown by the dashed line a), the projection of the connecting line 6 in the first reinforcement layer divides the perforation 5-1 in the opening 5 of the pattern layer 1 into two equal regions; the connecting lines 6 of the openings 5 ​​between adjacent reinforcement layers from the first to the Nth layer are also staggered, and the misalignment difference of the projection of the connecting lines 6 is greater than 20um; a preferred solution is that, in two adjacent reinforcement layers, the projection of the connecting line 6 in the opening 5 of the upper layer is located at the center of the two adjacent connecting lines 6 in the lower layer (e.g., Figure 5 (As shown by the dashed line b at the midpoint), the projections of the connecting lines 6 of the odd-numbered enhancement layers 2 correspond one-to-one; the projections of the connecting lines 6 of the even-numbered enhancement layers 3 correspond one-to-one.

[0034] The thickness of the pattern layer 1 is greater than or equal to 5 μm, and the thicknesses of the first to the Nth reinforcement layers can be set to be equal to the thickness of the pattern layer 1.

[0035] The width of the connecting line 6 in the pattern layer 1 is equal to or less than the width of its opening 5; the width of the connecting line 6 in the first to the Nth reinforcement layers is equal to or greater than the width of the connecting line 6 in the pattern layer 1, but less than 15um. A preferred option is to increase the width of the connecting line 6 in the first to the Nth layers sequentially until the line width reaches 15um.

[0036] Compared with the prior art, the beneficial effects of this utility model are:

[0037] 1. To maintain the strength and lifespan of the screen printing plate, the mesh count of existing screen printing plates is generally higher than 500 mesh. The mesh count inside the opening of the graphic layer of this utility model is less than 100 mesh, which means that the number of wires blocking the silver paste from falling is more than 80% less than that of the screen printing plate. Therefore, under the premise of the same efficiency, the silver paste consumption is close to that of a fully open screen printing plate, which has a great advantage over the screen printing plate with screen printing plate with screen printing plate. Although the mesh count in the graphic layer is lower, taking 100 mesh as an example, the length of a single opening is about 0.25mm. Due to the presence of connecting wires, the risk of the screen printing plate being scrapped due to the lack of any connecting structure inside the long and thin opening is effectively reduced.

[0038] 2. Although the low mesh count of the pattern layer itself cannot provide high screen strength for the grid line arrangement direction, the connecting lines in the first to Nth reinforcement layers (odd reinforcement layers and even reinforcement layers) have a superposition effect with the connecting lines in the pattern layer. Therefore, the number of connecting lines can be effectively increased, thereby increasing the strength of the grid line arrangement direction and improving the lifespan of the screen. At the same time, since the connecting lines in the first to Nth reinforcement layers are suspended above the pattern layer, the connecting lines in the first to Nth reinforcement layers will not have the disadvantage of blocking the silver paste from falling. It can enhance the strength of the grid line arrangement direction without negatively affecting the silver paste consumption.

[0039] 3. From the graphic layer to the Nth enhancement layer, the width of the corresponding openings increases sequentially. The cross-section of the openings in the entire screen is in the shape of a funnel. This shape is more favorable for the falling of silver paste and can help the silver paste fill the area directly below the connection line of the graphic layer opening.

[0040] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-layer screen printing plate, characterized in that: It includes a pattern layer (1) and a first to Nth enhancement layer; the first to Nth enhancement layers are stacked sequentially from bottom to top on top of the pattern layer (1); the pattern layer (1) and the first to Nth enhancement layers each contain multiple grid lines (4) that correspond one-to-one with each other, and the grid lines (4) form openings (5) that correspond one-to-one with each other. Multiple connecting lines (6) are provided in each opening (5), and the opening (5) is divided into multiple perforations (5-1) by the multiple connecting lines (6); the mesh number of the perforations (5-1) in each opening (5) in the first to Nth enhancement layers is greater than or equal to the mesh number of the perforations (5-1) in each opening (5) in the pattern layer (1), and not greater than 200 mesh; the mesh number of the perforations (5-1) in each opening (5) in the pattern layer (1) is less than or equal to 100 mesh; the connecting lines (6) of the two adjacent layers in the pattern layer (1) and the first to Nth enhancement layers are staggered, and the stagger difference is greater than 20μm.

2. The multi-layer screen printing plate according to claim 1, characterized in that: The grid line (4), the connecting line (6), and the opening (5) are an integral structure.

3. A multi-layer screen printing plate according to claim 1, characterized in that: The N is greater than or equal to 2, and the odd-numbered layers in the first to Nth enhancement layers are odd-numbered enhancement layers (2), and the even-numbered layers are even-numbered enhancement layers (3); the odd-numbered enhancement layers (2) and even-numbered enhancement layers (3) are alternately set above the graphics layer (1).

4. A multi-layer screen printing plate according to claim 3, characterized in that: The width of the opening (5) in the layers of a whole consisting of graphic layer (1), odd enhancement layer (2) and even enhancement layer (3) increases from bottom to top.

5. A multi-layer screen printing plate according to claim 3, characterized in that: The openings (5) of the odd-numbered enhancement layer (2) and the even-numbered enhancement layer (3) are both centered relative to the opening (5) of the graphics layer (1).

6. A multi-layer screen printing plate according to claim 3, characterized in that: The number of perforations (5-1) in each opening (5) of the odd-numbered enhancement layer (2) and the even-numbered enhancement layer (3) is the same and is an integer multiple of the number of perforations (5-1) in each opening (5) of the graphic layer (1).

7. A multi-layer screen printing plate according to claim 6, characterized in that: In the graphic layer (1), odd enhancement layer (2) and even enhancement layer (3), the projection of the upper layer connection line (6) divides the perforations (5-1) between the two adjacent connection lines (6) of the lower layer equally.

8. A multi-layer screen printing plate according to claim 7, characterized in that: The projections of the connecting lines (6) of the odd-numbered enhancement layers (2) are one-to-one; the projections of the connecting lines (6) of the even-numbered enhancement layers (3) are one-to-one.

9. A multi-layer screen printing plate according to claim 1, characterized in that: The width of the opening (5) of the graphic layer (1) is 5-20 μm; the width of the connecting line (6) of the graphic layer (1) is equal to or less than the width of its opening (5).

10. A multi-layer screen printing plate according to claim 3, characterized in that: The width of the connecting line (6) in the odd enhancement layer (2) and the even enhancement layer (3) is equal to or greater than the width of the connecting line (6) in the graphic layer (1), and the width of the connecting line (6) in the odd enhancement layer (2) and the even enhancement layer (3) increases from bottom to top, with the width of the uppermost connecting line (6) being less than or equal to 15μm.

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