Screen version body and printing screen
By designing a flow-guiding inclined surface ink bridge on the screen printing plate, the problem of insufficient ink distribution performance of the printing screen was solved, the fluidity of the ink and the quality of electrode forming were improved, and the reliability and service life of the solar cell were enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHINE OPTOELECTRONICS (KUNSHAN) CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-21
AI Technical Summary
The ink application performance of existing printing screens is insufficient, resulting in poor electrode forming quality. This may lead to broken lines, narrowing, uneven thickness, rough edges, or bonding defects, affecting the reliability and lifespan of solar cells.
Design a screen printing body, including a carrier and printing grid lines. The grid lines are provided with ink bridges and ink outlet holes. The ink bridges have guiding slopes, which disperse the force, improve the fluidity of the ink, and enhance the ink dispensing performance.
By using the dispersing force of the guide slope, the fluidity of the paste is improved, the ink absorption is enhanced, the printing performance is improved, the electrode forming quality is improved, and the reliability and service life of solar cells are increased.
Smart Images
Figure CN224528257U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic technology, and in particular to a screen printing body and a printing screen. Background Technology
[0002] Solar energy, as an inexhaustible and renewable clean energy source, has attracted much attention for its utilization technologies. As the core process carrier in the fabrication of solar cell electrodes, the performance of the printing screen directly affects the electrode forming quality and production cost. In the printing process, a squeegee drives the paste to move across the surface of the printing screen, transferring the paste through a precisely designed mesh pattern to the silicon wafer surface, forming electrodes with specific linewidths and thicknesses.
[0003] Electrodes bear the core function of collecting photogenerated carriers and facilitating current flow. Therefore, the ink application performance of the mesh body, as a core process parameter, directly determines the forming quality of the electrodes. Insufficient ink application performance may lead to electrode breakage, narrowing, or aspect ratio imbalance, or may cause uneven electrode thickness, rough edges, or bonding defects, thereby threatening the reliability and lifespan of the solar cell. Summary of the Invention
[0004] Therefore, it is necessary to provide a new screen printing body and printing screen to solve the above-mentioned technical problems.
[0005] One technical solution of this utility model is: a screen printing body, which includes a carrier and a plurality of printing grid lines disposed on the carrier. The printing grid lines extend along a first direction which is the printing direction. The plurality of printing grid lines are spaced apart along a second direction which intersects the first direction. The printing grid lines include bridge segments. The bridge segments are spaced apart along the first direction with a plurality of ink-passing bridges. Adjacent ink-passing bridges are connected by ink-draining holes. The width of the ink-draining holes is gradually changed. At least some of the ink-passing bridges are provided with guide slopes facing away from the first direction.
[0006] In one embodiment, the angle between the guide slope and the second direction is in the range of 5°-85°, and each angle is set equally or differently.
[0007] In one embodiment, the angle between the guide slope and a third direction of the thickness direction of the carrier is in the range of 5°-85°, and each angle is set equally or differently.
[0008] In one embodiment, the ink-crossing bridge includes a bridge deck, a bridge bottom opposite to the bridge deck, and bridge sides located on both sides, wherein at least one of the bridge deck, the bridge bottom, or the two bridge sides is an arc surface; and at least one of the bridge sides of the ink-crossing bridge is the guide slope.
[0009] In one embodiment, the bridge deck of the ink-crossing bridge is rectangular, parallelogram, waist-shaped, drum-shaped, curved, or trapezoidal; the cross-section of the ink-crossing bridge is rectangular, parallelogram, inverted triangle, or inverted trapezoidal.
[0010] In one embodiment, the lengths of the plurality of ink-passing bridges are varied, and the widths of the plurality of ink-passing bridges are either equal or varied.
[0011] In one embodiment, the bridge over the inkstone is an arch bridge.
[0012] In one embodiment, the carrier includes a printing surface and a printing substrate disposed opposite to each other. The printing grid includes a printing groove recessed from the printing surface and a printing hole penetrating from the bottom of the printing groove. A section of the printing hole is widened to form a bridge segment. The bridge segment has an ink expansion area recessed on the side of the printing substrate. The ink expansion area is connected to the ink outlet hole.
[0013] In one embodiment, the bridge segment of the printed grid line has a stepped area protruding or recessed on the printing surface side, and the stepped area is correspondingly provided with the ink expansion area.
[0014] This utility model also discloses a printing screen, which includes a screen frame and a screen body as described above, mounted on the screen frame.
[0015] The beneficial effects of this utility model are: at least part of the ink bridge is provided with a guide slope facing away from the first direction, which can disperse the force, improve the fluidity of the ink, increase the ink flowability, and improve the printing performance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the web version of this utility model;
[0017] Figure 2 for Figure 1 A magnified view of a portion of the China Open version;
[0018] Figure 3 for Figure 2 A magnified view of a portion of the China Open version;
[0019] Figure 4 for Figure 2 A schematic diagram of the central AA line;
[0020] Figure 5 for Figure 2 A schematic diagram of the middle BB line;
[0021] Figure 6 Schematic diagrams of several shapes of the bridge deck of the ink-crossing bridge in the web version of this utility model;
[0022] Figure 7 Schematic diagrams of several cross-sectional shapes of the ink bridge in the web version of this utility model;
[0023] Figure 8 This is another layered schematic diagram of the web version body of this utility model;
[0024] Figure 9 This is another layered schematic diagram of the web version body of this utility model;
[0025] Figure 10 This is another layered schematic diagram of the web version body of this utility model;
[0026] Figure 11 This is another layered schematic diagram of the web version body of this utility model;
[0027] Figure 12 This is another layered schematic diagram of the web version body of this utility model;
[0028] Figure 13 This is a schematic diagram of the printing screen of this utility model. Detailed Implementation
[0029] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0030] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0032] This utility model discloses a screen printing body, which includes a carrier and a plurality of printing grid lines disposed on the carrier. The printing grid lines extend along a first direction which is the printing direction, and the plurality of printing grid lines are spaced apart along a second direction that intersects the first direction. The printing grid lines include bridge segments, and the bridge segments are provided with a plurality of ink-passing bridges spaced apart along the first direction. Adjacent ink-passing bridges are connected by through ink-draining holes with gradually changing widths. At least some of the ink-passing bridges are provided with guide slopes facing away from the first direction, which can disperse the force, improve the fluidity of the ink, increase ink flow, and improve printing performance.
[0033] In one embodiment, the angle between the guide slope and the second direction ranges from 5° to 85°, and each angle is either equal or different. In other embodiments, some angles may be the same and some may be different; when different, they may be set at equal intervals, gradually, or randomly, etc.
[0034] In one embodiment, the angle between the guide slope and a third direction (thickness direction of the carrier) is 5°-85°, and each angle is set equally or differently.
[0035] In one embodiment, a portion of the ink-crossing bridge extends along a second direction, meaning the ink-crossing bridge is perpendicular to the first direction and does not form an angle with the second direction. This portion of the ink-crossing bridge extending along the second direction is located at any position at either end or in the middle of the bridge segment, thus distributing the force evenly and increasing its strength.
[0036] In one embodiment, the width of the ink bridge is gradually varied. The width of the ink bridge can be uniform or varied. When gradually varied, it can be from one end to the other, or from both ends to the middle, or it can vary on one side or both sides. The width of the ink outlet is uniformly widened or gradually varied along the first direction within the bridge segment.
[0037] In one embodiment, the ink-crossing bridge includes a bridge deck, a bridge base opposite to the bridge deck, and bridge sides located on both sides. At least one of the bridge deck, the bridge base, or the two bridge sides is an arc surface. At least one of the bridge sides of the ink-crossing bridge is a guide slope. The bridge deck of the ink-crossing bridge is rectangular, parallelogram, waist-shaped, drum-shaped, curved, or trapezoidal; the cross-section of the ink-crossing bridge is rectangular, parallelogram, inverted triangle, or inverted trapezoidal.
[0038] In one embodiment, the lengths of several ink-crossing bridges are varied, and the widths of several ink-crossing bridges are either equal or varied.
[0039] In one embodiment, the ink-passing bridge is an arched bridge. Both the bridge deck and the bottom of the bridge are curved in one direction to improve ink application performance.
[0040] In one embodiment, the carrier includes a printing surface and a substrate surface disposed opposite to each other. The printing grid includes a printing groove recessed from the printing surface and a printing hole penetrating from the bottom of the printing groove, wherein a section of the printing hole is widened to form a bridge segment. The bridge segment has an ink expansion area recessed on the substrate side, which communicates with the ink dispensing hole. The ink expansion area temporarily stores and dispenses ink, improving ink dispensing performance. The bridge segment has a stepped area convex on the printing surface side, corresponding to the ink expansion area, to improve overall strength.
[0041] This utility model also discloses a printing screen, which includes a screen frame and a screen body as described above, mounted on the screen frame. The printing screen has good ink application and printing performance.
[0042] The following description, with reference to the figures, illustrates the web version of this utility model.
[0043] Please refer to Figures 1 to 5 This utility model discloses a screen printing body 100, which includes a carrier 1 and a plurality of printing grid lines 2 disposed on the carrier 1. The printing grid lines 2 extend along a first direction X, which is the printing direction, and the plurality of printing grid lines 2 are spaced apart along a second direction Y, which is perpendicular to the first direction X. The printing grid lines 2 include a widened bridge segment 3, and the bridge segment 3 has a plurality of ink-passing bridges 31 spaced apart along the first direction X. Between adjacent ink-passing bridges 31, there is a through ink-draining hole 32. The width of the ink-draining hole 32 gradually widens. At least some of the ink-passing bridges 31 are provided with a guide slope 311 facing away from the first direction X, which can disperse the force, improve the fluidity of the ink, increase ink flow, and improve printing performance.
[0044] In this embodiment, the bridge segment 3 includes 18 ink-crossing bridges 31 sequentially along the first direction X. The 14 middle ink-crossing bridges 31 are all inclined with guide slopes 311, and the angle α between the guide slopes 311 and the second direction Y is the same for all, 40°. The two ink-crossing bridges 31 at each end extend along the second direction and do not have guide slopes 311. Along the first direction X, the length of the ink-crossing bridges 31 gradually increases, then remains constant, and then gradually decreases; the width of the ink-crossing bridges 31 is basically the same; correspondingly, the width of the ink-draining hole 32 gradually changes along the Y direction. Each ink-crossing bridge 31 includes a bridge surface 312, a bridge bottom 313 opposite to the bridge surface 312, and bridge sides 314 on both sides. One bridge side 314 of some ink-crossing bridges 31 is a guide slope 311. In this embodiment, the bridge side 314 of some ink-crossing bridges 31 is an arc surface.
[0045] In this embodiment, the carrier 1 includes a printing surface 11 and a substrate surface 12 disposed opposite to each other. The printing grid line 2 includes a printing groove 21 recessed from the printing surface 11 and a printing hole 22 penetrating from the bottom of the printing groove 21, wherein a section of the printing hole 22 is gradually widened to form a bridge segment 3. The bridge segment 3 has an ink expansion area 41 recessed on the substrate surface 12 side, which temporarily stores and allows ink to flow, improving ink flow. The bridge segment 3 has a stepped area 42 protruding on the printing surface 11 side, which corresponds to the ink expansion area 41 to improve overall strength. After the stepped area 42 is set, the ink bridge 31 is simultaneously raised, which facilitates ink flow.
[0046] In this embodiment, the bridge deck 312 is trapezoidal and oblong, and the cross-sectional shape of the overpass 31 is rectangular. For other embodiments, please refer to... Figure 6 The bridge deck 312 can also be other shapes, such as parallelograms, drum-shaped, curved, or trapezoidal. When trapezoidal, it can be an upright trapezoid, an inverted trapezoid, or a right-angled trapezoid, etc. For other embodiments, please refer to... Figure 7 The cross-sectional shape of the bridge 31 can also be a parallelogram, an inverted triangle, or an inverted trapezoid.
[0047] In this embodiment, the support 1 is a metallic material such as nickel or a nickel alloy. The support 1 can be a single, integral layer, or it can be two or more layers with no interfaces between them. For other embodiments, please refer to... Figure 8 and Figure 9 The carrier 5 includes a first layer 51 and a second layer 52 stacked together. The first layer 51 has a printing surface 511, and the second layer 52 has a printing substrate 521. A printing groove 512 penetrates the first layer 51, and a printing hole 522 penetrates the second layer. The printing groove 512 and the printing hole 522 are connected. The first layer 51 and the second layer 52 are made of the same or different materials and have an interface between them. The ink extension area 43 is recessed from the printing substrate 521, and the thickness of the lower ink bridge 33 is less than the thickness of the second layer 52. For other embodiments, please refer to... Figure 10 Furthermore, the bridge segment has a recessed stepped area 44 on the printing surface 511 side, which corresponds to the ink expansion area 43, facilitating ink application. For other embodiments, please refer to... Figure 11 and Figure 12 The carrier 6 includes a first layer 61, a second layer 62, and a third layer 63 stacked together. The first layer 61 has a printing surface 611, and a printing groove 612 penetrates the first layer 61. The third layer 63 has a printing surface 631. The second layer 62 has a lower ink bridge 34, and a printing hole 632 penetrates both the second layer 62 and the third layer 63. The width of the printing hole 632 in the second layer 62 is greater than the width in the third layer 63. The first layer 61 is a metal layer such as nickel or a nickel alloy, the second layer 62 is a metal layer such as nickel or a nickel alloy, and the third layer 63 is a metal layer such as nickel or a nickel alloy, or a polymer layer.
[0048] Please refer to Figure 13 This utility model discloses a printing screen 200, which includes a screen frame 201 and a screen body 100 mounted on the screen frame 201. The printing screen 200 has good ink application and printing performance.
[0049] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail above with reference to the accompanying drawings. Many specific details are set forth in the above description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described above, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, the technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; however, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.
[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this 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 utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A web version body, characterized in that, It includes a carrier and a plurality of printed grid lines disposed on the carrier. The printed grid lines extend along a first direction which is the printing direction. The plurality of printed grid lines are spaced apart along a second direction which intersects the first direction. The printed grid lines include bridge segments. The bridge segments are spaced apart along the first direction with a plurality of ink-passing bridges. Adjacent ink-passing bridges are connected by a through-hole for ink release. At least a portion of the ink-passing bridges are provided with a guide slope facing away from the first direction.
2. The web version according to claim 1, characterized in that, The angle between the guide slope and the second direction is in the range of 5°-85°, and each angle is set equally or differently.
3. The web version according to claim 1, characterized in that, The angle between the guide slope and a third direction (thickness direction of the carrier) is between 5° and 85°, and each angle is set equally or differently.
4. The web version according to claim 1, characterized in that, The ink-crossing bridge includes a bridge deck, a bridge bottom opposite to the bridge deck, and bridge sides located on both sides. The bridge deck, the bridge bottom, or at least one of the two bridge sides is an arc surface; at least one of the bridge sides of the ink-crossing bridge is the guide slope.
5. The web version according to claim 4, characterized in that, The bridge deck of the Guomo Bridge is rectangular, parallelogram, waist-shaped, drum-shaped, curved, or trapezoidal; the cross-section of the Guomo Bridge is rectangular, parallelogram, inverted triangle, or inverted trapezoidal.
6. The web version according to claim 1, characterized in that, The lengths of some of the ink-passing bridges are varied, and the widths of some of the ink-passing bridges are either equal or varied.
7. The web version according to claim 1, characterized in that, The Guomo Bridge is an arch bridge.
8. The web version according to claim 1, characterized in that, The carrier includes a printing surface and a printing substrate disposed opposite to each other. The printing grid includes a printing groove recessed from the printing surface and a printing hole penetrating from the bottom of the printing groove. A section of the printing hole is widened to form a bridge segment. The bridge segment has an ink expansion area recessed on the side of the printing substrate. The ink expansion area is connected to the ink outlet hole.
9. The web version according to claim 8, characterized in that, The bridge segment of the printed grid line has a stepped area protruding or recessed on the printing surface side, and the stepped area is correspondingly set with the ink expansion area.
10. A printing screen, characterized in that, It includes a screen frame and a screen body as described in any one of claims 1 to 9, mounted on the screen frame.