Screen printing plate
By using a mixture of warp and weft threads of different diameters in the screen printing plate, and by using stainless steel and tungsten steel materials, the problems of insufficient printability and strength of ultra-fine electrodes are solved, achieving efficient printing and extended service life.
Patent Information
- Application Number
- CN202520939820.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-05-14
AI Technical Summary
Existing screen printing plates suffer from poor slurry permeability and insufficient screen strength when manufacturing ultra-fine electrodes, resulting in problems with printability and low service life.
It uses a mix of warp and weft threads of different diameters, with fine-diameter weft and warp threads used in the printing area and coarse-diameter weft and warp threads used in the non-printing area. Combined with stainless steel and tungsten steel materials, it improves printability and strength.
It enhances the ink flow in the printing area, extends the lifespan of the screen, and maintains the strength and toughness of the screen.
Smart Images
Figure CN223791168U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen printing technology, specifically a screen printing plate. Background Technology
[0002] Screen printing is a widely used graphic transfer technology across various industries. Its basic principle is to precisely print ink onto a substrate using a pattern on a screen. In solar cell manufacturing, screen printing is used for electrode preparation, offering advantages such as ease of operation, low cost, and suitability for large-area production. Electrode materials are typically metals, which have a certain degree of light-blocking properties. Excessive electrode coverage can prevent more sunlight from reaching the active area, thus reducing photocurrent. Therefore, the width (linewidth), spacing, and thickness of the electrodes must be carefully designed to ensure good conductivity while minimizing light obstruction. Consequently, screen design trends towards higher mesh counts, finer line diameters, and narrower linewidths.
[0003] Common screen printing stencils are typically made of warp and weft threads of the same material and diameter. When the electrode linewidth is ultra-fine, reduced to 3–10 μm, the high mesh count and small openings make it difficult for the ink to pass through the screen, resulting in poor printability. Furthermore, when the mesh diameter is reduced to 5–10 μm to increase the mesh count, the screen's strength decreases significantly, leading to a shorter print lifespan. Utility Model Content
[0004] In order to overcome the defects in the prior art, this utility model provides a screen printing plate that solves at least one of the above problems.
[0005] This application discloses a screen printing plate, including a screen frame and a screen stretched within the screen frame. The screen includes multiple warp threads and multiple weft threads, which interweave to form a printing area and a non-printing area located around the printing area and fixedly connected to the screen frame. At least a portion of the multiple weft threads passing through the printing area has a first diameter, and at least a portion of the multiple weft threads passing through the non-printing area has a second diameter. The first diameter is smaller than the second diameter.
[0006] Specifically, at least a portion of the multiple warp threads passing through the printed area have a third diameter, and at least a portion of the multiple warp threads passing through the non-printed area have a fourth diameter, wherein the third diameter is smaller than the fourth diameter.
[0007] Specifically, at least a portion of the multiple warp threads passing through the printed area have a third diameter, and at least a portion of the multiple warp threads passing through the non-printed area have a fourth diameter, wherein the third diameter is smaller than the fourth diameter.
[0008] Specifically, the first wire diameter and / or the third wire diameter are between 5 and 10 μm.
[0009] Specifically, the second wire diameter and / or the fourth wire diameter are greater than 10 μm.
[0010] Specifically, the mesh count of the printed area is greater than the mesh count of the non-printed area.
[0011] Specifically, in the printed area, the distance between two adjacent warp lines is greater than the distance between two adjacent weft lines.
[0012] Specifically, in the printed area, the distance between two adjacent warp lines is less than the distance between two adjacent weft lines.
[0013] Specifically, the warp and weft threads are made of stainless steel or tungsten steel.
[0014] Specifically, when the warp is made of stainless steel, the weft is made of tungsten carbide; when the warp is made of tungsten carbide, the weft is made of stainless steel.
[0015] This utility model has at least the following beneficial effects:
[0016] 1. In this embodiment, the screen is made by mixing weft yarns of different diameters. The printing area is woven with fine weft yarns to improve printability, while the non-printing area is woven with coarse weft yarns to ensure the strength of the screen and improve its service life.
[0017] 2. By adjusting the weave count of the warp and weft threads in the printing area (i.e., the warp and weft spacing are different), the mesh openings in the printing area can be made larger in the printing direction, which helps the paste to pass through and improves printability.
[0018] 3. By using a combination of stainless steel and tungsten steel in the weaving process, the screen can have both the toughness of stainless steel and the strength of tungsten steel, thus improving the service life of the screen.
[0019] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1This is a schematic diagram of the screen plate structure in Embodiment 1 of this utility model;
[0022] Figure 2 This is a partial enlarged view of the printing area in Embodiment 1 of this utility model;
[0023] Figure 3 This is a schematic diagram of the screen plate structure in Embodiment 2 of this utility model;
[0024] Figure 4 This is a partial enlarged view of the printing area in Embodiment 2 of this utility model.
[0025] The reference numerals in the above figures are: 1. Wire mesh; 11. Warp; 12. Weft; 2. Frame. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "fixing," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.
[0030] Furthermore, the terms "first" and "second" are used only to distinguish between different terms in description and do not have any special meaning.
[0031] Example 1
[0032] Combination Figure 1 and Figure 2 In this embodiment, the screen printing plate includes a screen 1 and a frame 2, with the screen 1 stretched within the frame 2. The screen 1 includes multiple warp threads 11 (parallel to the printing direction) and multiple weft threads 12, woven in a warp-weft interlacing pattern. The screen 1 is woven to include a printing area (within the dotted square) and a non-printing area (outside the dotted square) surrounding the printing area. The printing area is used to set the opening pattern, and the non-printing area is used to fix it to the frame. The weft threads on the screen have multiple diameters; that is, if all the weft threads are divided into multiple groups, at least two groups of weft threads have different diameters, meaning that each weft thread has a weft thread that produces a diameter difference. Furthermore, at least a portion of the multiple weft threads passing through the printing area has a first diameter, and at least a portion of the multiple weft threads passing through the non-printing area has a second diameter, where the first diameter is smaller than the second diameter. The diameter of the remaining portion of the multiple weft threads passing through the printing area can be the same as or different from the first diameter; while the diameter of the remaining portion of the multiple weft threads passing through the non-printing area can be the same as or different from the second diameter.
[0033] Using the above scheme, the screen in this embodiment is made by mixing weft threads of different diameters. The printing area is woven with fine weft threads to improve printability, while the non-printing area is woven with coarse weft threads to ensure the strength of the screen and improve the service life of the screen.
[0034] Furthermore, in this embodiment, the warp threads also have multiple diameters. Specifically, at least a portion of the warp threads passing through the printing area have a third diameter, and at least a portion of the warp threads passing through the non-printing area have a fourth diameter, where the third diameter is smaller than the fourth diameter. Similarly, the diameter of the remaining portions of the warp threads passing through the printing area can be the same as or different from the third diameter; the diameter of the remaining portions of the warp threads passing through the non-printing area can be the same as or different from the fourth diameter. This approach further improves the printability of the screen printing plate.
[0035] Preferably, within the printing area, the diameter of the weft yarn is smaller than that of the warp yarn to increase the opening, which facilitates the passage of the ink and improves printability.
[0036] Specifically, the first and / or third wire diameters are between 5 and 10 μm. That is, the wire diameter in the printing area is generally between 5 and 10 μm to improve printability and achieve ultra-fine linewidth. The second and / or fourth wire diameters are greater than 10 μm, meaning the wire diameter in the non-printing area is generally greater than 10 μm to ensure the screen has sufficient strength.
[0037] like Figure 1 As shown, in this embodiment, the mesh count of the printing area is greater than that of the non-printing area, or in other words, the mesh size of the printing area is smaller than that of the non-printing area. In the printing area, the distance L1 between two adjacent warp threads is greater than the distance L2 between two adjacent weft threads, in order to increase the opening size and improve printability.
[0038] Specifically, in this embodiment, the warp and weft threads are made of stainless steel or tungsten carbide. Preferably, when the warp threads are made of stainless steel, the weft threads are preferably made of tungsten carbide; when the warp threads are made of tungsten carbide, the weft threads are preferably made of stainless steel. By adopting this approach, and using a mixed weaving method of stainless steel and tungsten carbide, the screen can have both the toughness of stainless steel and the strength of tungsten carbide, thus improving the service life of the screen.
[0039] Example 2
[0040] The screen printing plate in this embodiment is largely the same as that in Embodiment 1. The difference lies in, for example... Figure 3 and Figure 4 As shown, in the printing area of this embodiment, the distance L1 between two adjacent warp lines is less than the distance L2 between two adjacent weft lines.
[0041] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.
Claims
1. A screen printing plate, characterized in that, The device includes a frame and a screen stretched within the frame. The screen includes multiple warp threads and multiple weft threads, which interweave to form a printing area and a non-printing area located around the printing area and fixedly connected to the frame. At least a portion of the multiple weft threads passing through the printing area has a first diameter, and at least a portion of the multiple weft threads passing through the non-printing area has a second diameter. The first diameter is smaller than the second diameter.
2. The screen printing plate according to claim 1, characterized in that, At least a portion of the warp threads passing through the printed area have a third diameter, and at least a portion of the warp threads passing through the non-printed area have a fourth diameter, wherein the third diameter is smaller than the fourth diameter.
3. The screen printing plate according to claim 1, characterized in that, Within the printing area, the diameter of the weft thread is smaller than that of the warp thread.
4. The screen printing plate according to claim 2, characterized in that, The first wire diameter and / or the third wire diameter are between 5 and 10 μm.
5. The screen printing plate according to claim 2, characterized in that, The second wire diameter and / or the fourth wire diameter are greater than 10 μm.
6. The screen printing plate according to claim 1, characterized in that, The mesh count of the printed area is greater than the mesh count of the non-printed area.
7. The screen printing plate according to claim 1, characterized in that, In the printed area, the distance between two adjacent warp lines is greater than the distance between two adjacent weft lines.
8. The screen printing plate according to claim 1, characterized in that, In the printing area, the distance between two adjacent warp lines is less than the distance between two adjacent weft lines.
9. The screen printing plate according to claim 1, characterized in that, The warp and weft threads are made of stainless steel or tungsten steel.
10. The screen printing plate according to claim 9, characterized in that, When the warp is made of stainless steel, the weft is made of tungsten carbide; when the warp is made of tungsten carbide, the weft is made of stainless steel.