Fine grid screen printing plate and printing screen printing plate

Abstract

The utility model discloses a fine grid screen printing plate which comprises a bearing body, a first fine grid line, a first auxiliary connecting line, a second fine grid line and a second auxiliary connecting line, wherein the first fine grid line, the first auxiliary connecting line, the second fine grid line and the second auxiliary connecting line penetrate through the bearing body. The first fine grid lines and the second fine grid lines are adjacently arranged in the first direction and form interval areas, the first auxiliary connecting lines extend to the interval areas from the first fine grid lines, and the second auxiliary connecting lines extend to the interval areas from the second fine grid lines. The plurality of first auxiliary connecting lines and the plurality of second auxiliary connecting lines are alternately arranged in rows at intervals in the interval area in the second direction, so that the structural strength of the fine grid screen printing plate is enhanced, the stability of the first fine grid lines and the second fine grid lines is improved, and the line breaking phenomenon is effectively avoided. In addition, the utility model further discloses a screen printing plate which comprises a main grid screen printing plate and the fine grid screen printing plate.

Description

Technical Field

[0001] This application relates to the field of printing screen technology, and more particularly to a fine grid screen and a printing screen. Background Technology

[0002] A printing screen is an important tool for printing the electrodes of a solar cell. The paste is poured onto the printing screen and a squeegee is used to move the paste on the screen, forcing it through the mesh of the screen and onto the solar cell to form a corresponding pattern, thus forming the electrodes of the solar cell.

[0003] Conventional solar cells use screen printing to print fine grid electrodes and main grid electrodes on their surface. The fine grid electrodes collect the current generated after sunlight exposure, while the main grid electrodes collect the current from the fine grid electrode lines. The screen printing stencil is used to print the fine grid electrodes, and the main grid stencil is used to print the main grid electrodes. However, after printing, both the fine grid electrodes and the main grid electrodes require sintering. This process can easily lead to breaks at the intersections of the fine and main grid electrode lines, resulting in a reduction in the power output of the solar cell and consequently, an overall power loss in the solar module. Summary of the Invention

[0004] Therefore, it is necessary to provide a new fine grid screen and printing screen to solve the above-mentioned technical problems.

[0005] One technical solution of this application is: a fine grid plate, comprising a carrier and a first fine grid line, a first auxiliary connecting line, a second fine grid line, and a second auxiliary connecting line respectively disposed through the carrier; the first fine grid line extends along a first direction, a plurality of the first fine grid lines are arranged at intervals along a second direction, the second fine grid line extends along the first direction, a plurality of the second fine grid lines are arranged at intervals along the second direction, the plurality of the first fine grid lines and the plurality of the second fine grid lines are arranged adjacent to each other in the first direction and form an interval region, the first auxiliary connecting line extends from the first fine grid line to the interval region, the second auxiliary connecting line extends from the second fine grid line to the interval region, and the plurality of the first auxiliary connecting lines and the plurality of the second auxiliary connecting lines are arranged alternately at intervals in the interval region along the second direction.

[0006] In one embodiment, the first auxiliary connecting line includes a first inclined segment extending from the first fine grid line, and the second auxiliary connecting line includes a second inclined segment extending from the second fine grid line. A plurality of the first inclined segments and a plurality of the second inclined segments are arranged alternately in a second direction in a spacing region.

[0007] In one embodiment, the width of the first inclined segment is greater than the width of the first fine gate line; the width of the first inclined segment is gradually changed; or, the first auxiliary connecting line further includes a first transition segment, the first transition segment connecting the first fine gate line and the first inclined segment, the width of the first transition segment being gradually changed; the width of the second inclined segment is greater than the width of the second fine gate line; the width of the second inclined segment is gradually changed; or, the second auxiliary connecting line further includes a second transition segment, the second transition segment connecting the second fine gate line and the second inclined segment, the width of the second transition segment being gradually changed.

[0008] In one embodiment, the first auxiliary connecting line includes a first inclined segment extending from the first fine grid line and a first connecting segment continuing to extend from the first inclined segment, and the second auxiliary connecting line includes a second inclined segment extending from the second fine grid line and a second connecting segment continuing to extend from the second inclined segment, and a plurality of the first connecting segments and a plurality of the second connecting segments are arranged alternately in the interval region along the second direction.

[0009] In one embodiment, the first connecting segment extends along a first direction, the second connecting segment extends along a first direction, and the first connecting segment and the second connecting segment are set at equal intervals, arithmetic intervals, or random intervals in the same column.

[0010] In one embodiment, the width of the first connecting segment is greater than the width of the first fine gate line, and the width of the first inclined segment is greater than the width of the first fine gate line; the width of the second connecting segment is greater than the width of the second fine gate line, and the width of the second inclined segment is greater than the width of the second fine gate line.

[0011] In one embodiment, the first auxiliary connecting line further includes a first transition segment, which connects the first fine gate line and the first inclined segment, and the width of the first transition segment is gradually changed; the second auxiliary connecting line further includes a second transition segment, which connects the second fine gate line and the second inclined segment, and the width of the second transition segment is gradually changed.

[0012] In one embodiment, the first inclined segment and the second inclined segment extend in opposite directions or at complementary angles, and are symmetrically arranged adjacent to the first inclined segment and adjacent to the second inclined segment.

[0013] In one embodiment, the width of the first auxiliary connecting line is greater than the width of the first fine gate line, and the first auxiliary connecting line and the first fine gate line are arranged in a straight line; the width of the second auxiliary connecting line is greater than the width of the second fine gate line, and the second auxiliary connecting line and the second fine gate line are arranged in a straight line; the first fine gate line and the second fine gate line extend in a staggered direction.

[0014] This utility model also discloses a printing screen, which includes a main grid screen and a fine grid screen as described above. The main grid screen includes a base layer and a plurality of main grid lines disposed through the base layer. The plurality of main grid lines are arranged at intervals along a first direction, and the main grid lines extend along a second direction and overlap and match a column of first auxiliary connecting lines and second auxiliary connecting lines.

[0015] The beneficial effects of this application are: a plurality of first auxiliary connecting lines and a plurality of second auxiliary connecting lines are arranged alternately in the interval area along the second direction, which strengthens the structural strength of the fine grid screen, improves the stability of the first fine grid lines and the second fine grid lines, and can effectively avoid the occurrence of line breakage when printing fine grid electrodes, printing main grid electrodes and soldering ribbons, thereby ensuring yield and quality stability and improving efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the fine grid version of this application;

[0017] Figure 2 for Figure 1 Enlarged view of center circle A;

[0018] Figure 3 This is a schematic diagram showing the superposition and correspondence of the fine grid screen and the main grid screen in the printing plate of this application;

[0019] Figure 4 This is a schematic diagram of the main grid structure of this application;

[0020] Figure 5 for Figure 3 Enlarged view of center circle B;

[0021] Figure 6 for Figure 3 An enlarged view of the center circle C;

[0022] Figure 7 This is a schematic diagram of another structure of the fine grid version of this application;

[0023] Figure 8 This is an enlarged schematic diagram of circle D in circle 7;

[0024] Figure 9 This is another schematic diagram showing the superposition and correspondence of the fine grid screen and the main grid screen in the printing screen of this application;

[0025] Figure 10 This is a schematic diagram of another structure of the main grid version of this application.

[0026] Figure 11 for Figure 9 Enlarged view of center circle E;

[0027] Figure 12 for Figure 9 A magnified view of the center circle F. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application 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 application.

[0029] 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.

[0030] 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This utility model discloses a fine grid screen, comprising a carrier and a first fine grid line, a first auxiliary connecting line, a second fine grid line, and a second auxiliary connecting line respectively disposed through the carrier. The first fine grid line extends along a first direction, and a plurality of first fine grid lines are arranged at intervals along a second direction. The second fine grid line extends along the first direction, and a plurality of second fine grid lines are arranged at intervals along the second direction. The plurality of first fine grid lines and the plurality of second fine grid lines are arranged adjacent to each other in the first direction and form an interval region. The first auxiliary connecting line extends from the first fine grid line to the interval region, and the second auxiliary connecting line extends from the second fine grid line to the interval region. The plurality of first auxiliary connecting lines and the plurality of second auxiliary connecting lines are arranged alternately at intervals along the second direction in the interval region, which strengthens the structural strength of the fine grid screen, improves the stability of the first and second fine grid lines, and effectively avoids line breakage during the printing of fine grid electrodes, printing of main grid electrodes, and soldering of solder strips, thereby ensuring yield and quality stability and improving efficiency.

[0032] In one embodiment, the first auxiliary connecting line includes a first inclined segment extending from a first fine grid line by bending, and the second auxiliary connecting line includes a second inclined segment extending from a second fine grid line by bending. A plurality of first inclined segments and a plurality of second inclined segments are arranged alternately in a spacing region along a second direction. The width of the first inclined segment is greater than the width of the first fine grid line; the width of the first inclined segment is gradually varied. Alternatively, the first auxiliary connecting line further includes a first transition segment connecting the first fine grid line and the first inclined segment, and the width of the first transition segment is gradually varied. The width of the second inclined segment is greater than the width of the second fine grid line; the width of the second inclined segment is gradually varied. Alternatively, the second auxiliary connecting line further includes a second transition segment connecting the second fine grid line and the second inclined segment, and the width of the second transition segment is gradually varied.

[0033] In one embodiment, the first auxiliary connecting line includes a first inclined segment extending from a first fine grid line and a first connecting segment continuing to extend from the first inclined segment. The second auxiliary connecting line includes a second inclined segment extending from a second fine grid line and a second connecting segment continuing to extend from the second inclined segment. A plurality of first connecting segments and a plurality of second connecting segments are arranged alternately in a column along a second direction in a spacing region. The first connecting segments extend along a first direction, and the second connecting segments extend along the first direction. The first connecting segments and the second connecting segments are spaced at equal, arithmetic, or random intervals within the same column. The width of the first connecting segment is greater than the width of the first fine grid line, and the width of the first inclined segment is greater than the width of the first fine grid line; the width of the second connecting segment is greater than the width of the second fine grid line, and the width of the second inclined segment is greater than the width of the second fine grid line.

[0034] In one embodiment, the first auxiliary connecting line further includes a first transition segment connecting the first fine gate line and the first inclined segment, the width of the first transition segment being gradually varied. The second auxiliary connecting line further includes a second transition segment connecting the second fine gate line and the second inclined segment, the width of the second transition segment being gradually varied.

[0035] In one embodiment, the first inclined segment and the second inclined segment extend in opposite directions or at complementary angles, and adjacent first inclined segments are symmetrically arranged, and adjacent second inclined segments are symmetrically arranged.

[0036] In one embodiment, the angle between the first inclined segment and the first fine grid line ranges from 5° to 85°, and the angle difference between the first inclined segments in the same row does not exceed 10°. The angle between the second inclined segment and the second fine grid line ranges from 5° to 85°, and the angle difference between the second inclined segments in the same row does not exceed 10°.

[0037] In one embodiment, the width of the first auxiliary connecting line is greater than the width of the first fine gate line, and the first auxiliary connecting line and the first fine gate line are arranged in a straight line. The width of the second auxiliary connecting line is greater than the width of the second fine gate line, and the second auxiliary connecting line and the second fine gate line are arranged in a straight line. The first fine gate line and the second fine gate line extend in a staggered direction.

[0038] This utility model also discloses a printing screen, which includes a main grid screen and a fine grid screen as described above. The main grid screen includes a base layer and a plurality of main grid lines disposed through the base layer. The plurality of main grid lines are arranged at intervals along a first direction, and the main grid lines extend along a second direction and overlap and match a column of first auxiliary connecting lines and second auxiliary connecting lines.

[0039] Please refer to the following. Figures 1 to 12 Examples of the fine grid screen and printing screen of this utility model are described below.

[0040] Please refer to Figure 1 and Figure 2 This utility model discloses a fine grid plate 100, which includes a carrier 101 and a first fine grid line 1, a first auxiliary connecting line 2, a second fine grid line 3, and a second auxiliary connecting line 4 respectively disposed through the carrier 101. The first fine grid line 1 extends along a first direction X, and a plurality of first fine grid lines 1 are arranged at intervals along a second direction Y perpendicular to the first direction X. The second fine grid line 3 extends along the first direction X, and a plurality of second fine grid lines 3 are arranged at intervals along the second direction Y. A plurality of first fine grid lines 1 and a plurality of second fine grid lines 3 are arranged adjacently in the first direction X and form a spaced region. A first auxiliary connecting line 2 extends from the first fine grid line 1 to the spaced region, and a second auxiliary connecting line 4 extends from the second fine grid line 3 to the spaced region. The plurality of first auxiliary connecting lines 2 and the plurality of second auxiliary connecting lines 4 are arranged alternately in the spaced region along the second direction Y, which strengthens the structural strength of the fine grid screen 100, improves the stability of the first fine grid line 1 and the second fine grid line 3, and can effectively avoid line breakage during the printing of fine grid electrodes, printing of main grid electrodes, and soldering of solder strips, thereby ensuring yield and quality stability and improving efficiency.

[0041] Specifically, the first auxiliary connecting line 2 includes a first inclined segment 21 extending from the first fine grid line 1 and a first connecting segment 22 extending from the first inclined segment 21. The second auxiliary connecting line 4 includes a second inclined segment 41 extending from the second fine grid line 3 and a second connecting segment 42 extending from the second inclined segment 41. The angle between the first inclined segment 21 and the first fine grid line 1 is α, and the angle between the second inclined segment 42 and the second fine grid line 3 is α, with the angle α ranging from 5° to 85°. The first connecting segment 22 extends along a first direction X, and the second connecting segment 42 extends along the first direction X. The first connecting segment 22 and the second connecting segment 42 are alternately arranged at equal intervals in the same column. The width of the first connecting segment 22 is greater than the width of the first fine grid line 1, and the width of the first inclined segment 21 is greater than the width of the first fine grid line 1. The width of the second connecting segment 42 is greater than the width of the second fine grid line 3, and the width of the second inclined segment 41 is greater than the width of the second fine grid line 3. In this embodiment, the tilt angle α of the first inclined segment 21 and the second inclined segment 41 is the same. In other embodiments, the tilt angle α of the first inclined segment 21 and the second inclined segment 41 may be different. In this embodiment, adjacent first fine grid lines 1 and second fine grid lines 3 extend along the same line in the first direction X. In other embodiments, adjacent first fine grid lines 1 and second fine grid lines 3 extend parallel to each other in the first direction X at a staggered angle, or the first fine grid line 1 and / or the second fine grid line 3 extend at an inclined angle, and it is considered that they can extend along the first direction X within ±45° of the first direction X.

[0042] The first auxiliary connecting line 2 also includes a first transition section 23, which connects the first fine grid line 1 and the first inclined section 21. The width of the first transition section 23 is gradually changed. The second auxiliary connecting line 4 also includes a second transition section 43, which connects the second fine grid line 3 and the second inclined section 42. The width of the second transition section 43 is gradually changed.

[0043] The first inclined segment 21 and the second inclined segment 41 extend in opposite directions or at complementary angles. Adjacent first inclined segments 21 are symmetrically arranged, either inward or outward; adjacent second inclined segments 42 are symmetrically arranged, either inward or outward.

[0044] Please refer to Figures 3 to 6This utility model discloses a printing screen 200, which includes a main grid screen 300 and a fine grid screen 100 as described above. The main grid screen 300 includes a base layer 301 and a plurality of main grid lines 302 disposed through the base layer 301. The plurality of main grid lines 302 are arranged at intervals along a first direction X, and the main grid lines 302 extend along a second direction Y and intersect and overlap with a column of first auxiliary connecting lines 2 and second auxiliary connecting lines 4. The main grid lines 302 are perpendicularly intersecting with the first connecting segments 22 and second connecting segments 42 in the same column along the second direction Y. In the first direction X, the first connecting segment 22 or the second connecting segment 42 protrudes from the main grid line 302 by a length greater than or equal to 5 μm. The main grid lines 302 are provided with pads 3021, and the pads 3021 overlap and match at least one first connecting segment 22 or second connecting segment 42.

[0045] Please refer to Figure 7 and Figure 8 This utility model discloses a fine grid plate 400, which includes a carrier 401 and a first fine grid line 5, a first auxiliary connecting line 6, a second fine grid line 7, and a second auxiliary connecting line 8 respectively disposed through the carrier 401. The first fine grid line 5 extends along a first direction X, and a plurality of first fine grid lines 5 are arranged at intervals along a second direction Y perpendicular to the first direction X. The second fine grid line 7 extends along the first direction X, and a plurality of second fine grid lines 7 are arranged at intervals along the second direction Y. A plurality of first fine grid lines 5 and a plurality of second fine grid lines 7 are arranged adjacently in the first direction X and form a spaced region. A first auxiliary connecting line 6 extends from the first fine grid line 5 to the spaced region, and a second auxiliary connecting line 8 extends from the second fine grid line 7 to the spaced region. The plurality of first auxiliary connecting lines 6 and the plurality of second auxiliary connecting lines 8 are arranged alternately in the spaced region along the second direction Y, which strengthens the structural strength of the fine grid screen 400, improves the stability of the first fine grid lines 5 and the second fine grid lines 7, and effectively avoids line breakage during the printing of fine grid electrodes, printing of main grid electrodes, and soldering of solder ribbons, thereby ensuring yield and quality stability and improving efficiency.

[0046] The first auxiliary connecting line 6 includes a first inclined segment 61 extending from the first fine grid line 5 by bending, and the second auxiliary connecting line 8 includes a second inclined segment 81 extending from the second fine grid line 7 by bending. The first inclined segment 61 and the second inclined segment 81 are arranged alternately in the interval region along the second direction Y. The width of the first inclined segment 61 is greater than the width of the first fine grid line 5, and the width of the first inclined segment 61 is gradually changed. The width of the second inclined segment 81 is greater than the width of the second fine grid line 7, and the width of the second inclined segment 81 is gradually changed. The first inclined segment 61 and the second inclined segment 81 have the same inclination angle, and the angle between the first inclined segment 61 and the first direction X is β, and the angle between the second inclined segment 81 and the first direction X is also β. In other embodiments, the inclination angles of the first inclined segment 61 and the second inclined segment 81 are different. The extension directions of the first inclined segment 61 and the second inclined segment 81 are opposite or the extension angles are complementary. Adjacent first inclined segments 61 are symmetrically arranged, inward or outward; adjacent second inclined segments 82 are symmetrically arranged, inward or outward.

[0047] In other embodiments, the first auxiliary connecting line 6 further includes a first transition section, which connects the first fine grid line 5 and the first inclined section 61. The width of the first inclined section 61 is greater than the width of the first fine grid line 5 and is uniformly set, while the width of the first transition section is gradually changed. The second auxiliary connecting line 8 further includes a second transition section, which connects the second fine grid line 7 and the second inclined section 81. The width of the first inclined section 81 is greater than the width of the second fine grid line 7 and is uniformly set, while the width of the second transition section is gradually changed.

[0048] Please refer to Figures 9 to 12 This utility model discloses a printing screen 500, which includes a main grid screen 600 and a fine grid screen 400 as described above. The main grid screen 600 includes a base layer 601 and a plurality of main grid lines 602 disposed through the base layer 601. The plurality of main grid lines 602 are arranged at intervals along a first direction X, and the main grid lines 602 extend along a second direction Y and intersect and overlap with a column of first auxiliary connecting lines 2 and second auxiliary connecting lines 4. The main grid lines 602 intersect and correspond with a first inclined segment 61 and a second inclined segment 81 in the same column along the second direction Y. The length of the first inclined segment 61 or the second inclined segment 81 protruding from the main grid line 602 is greater than or equal to 5 μm. The main grid lines 602 are provided with pads 6021, and the pads 6021 overlap and match at least one first inclined segment 61 or the second inclined segment 81.

[0049] To make the above-described objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application have been described in detail above with reference to the accompanying drawings. Many specific details have been set forth in the above description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described above, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed above. Furthermore, the technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been 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 implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. 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 patent application should be determined by the appended claims.

Claims

1. A fine grid screen, characterized in that, It includes a carrier and a first fine grid line, a first auxiliary connecting line, a second fine grid line, and a second auxiliary connecting line respectively disposed through the carrier; the first fine grid line extends along a first direction, a plurality of the first fine grid lines are arranged at intervals along a second direction, the second fine grid line extends along the first direction, a plurality of the second fine grid lines are arranged at intervals along the second direction, the plurality of the first fine grid lines and the plurality of the second fine grid lines are arranged adjacent to each other in the first direction and form an interval region, the first auxiliary connecting line extends from the first fine grid line to the interval region, the second auxiliary connecting line extends from the second fine grid line to the interval region, and the plurality of the first auxiliary connecting lines and the plurality of the second auxiliary connecting lines are arranged alternately at intervals in the interval region along the second direction.

2. The fine grid plate according to claim 1, characterized in that, The first auxiliary connecting line includes a first inclined segment extending from the first fine grid line, and the second auxiliary connecting line includes a second inclined segment extending from the second fine grid line. A plurality of the first inclined segments and a plurality of the second inclined segments are arranged alternately in a second direction in the interval region.

3. The fine grid plate according to claim 2, characterized in that, The width of the first inclined segment is greater than the width of the first fine grid line; the width of the first inclined segment is gradually changed; or, the first auxiliary connecting line further includes a first transition segment, the first transition segment connecting the first fine grid line and the first inclined segment, the width of the first transition segment being gradually changed; the width of the second inclined segment is greater than the width of the second fine grid line; the width of the second inclined segment is gradually changed; or, the second auxiliary connecting line further includes a second transition segment, the second transition segment connecting the second fine grid line and the second inclined segment, the width of the second transition segment being gradually changed.

4. The fine grid plate according to claim 1, characterized in that, The first auxiliary connecting line includes a first inclined segment extending from the first fine grid line and a first connecting segment continuing to extend from the first inclined segment. The second auxiliary connecting line includes a second inclined segment extending from the second fine grid line and a second connecting segment continuing to extend from the second inclined segment. A plurality of the first connecting segments and a plurality of the second connecting segments are arranged alternately in the interval region along the second direction.

5. The fine grid plate according to claim 4, characterized in that, The first connecting segment extends along a first direction, and the second connecting segment extends along a first direction. The first connecting segment and the second connecting segment are set with equal spacing, arithmetic spacing, or random spacing in the same column.

6. The fine grid plate according to claim 4, characterized in that, The width of the first connecting segment is greater than the width of the first fine grid line, and the width of the first inclined segment is greater than the width of the first fine grid line; the width of the second connecting segment is greater than the width of the second fine grid line, and the width of the second inclined segment is greater than the width of the second fine grid line.

7. The fine grid plate according to claim 6, characterized in that, The first auxiliary connecting line further includes a first transition section, which connects the first fine grid line and the first inclined section, and the width of the first transition section is gradually changed; the second auxiliary connecting line further includes a second transition section, which connects the second fine grid line and the second inclined section, and the width of the second transition section is gradually changed.

8. The fine grid plate according to claim 2 or 4, characterized in that, The first inclined segment and the second inclined segment extend in opposite directions or at complementary angles, and are symmetrically arranged adjacent to the first inclined segment and adjacent to the second inclined segment.

9. The fine grid screen according to claim 1, characterized in that, The width of the first auxiliary connecting line is greater than the width of the first fine gate line, and the first auxiliary connecting line and the first fine gate line are arranged in a straight line; the width of the second auxiliary connecting line is greater than the width of the second fine gate line, and the second auxiliary connecting line and the second fine gate line are arranged in a straight line; the first fine gate line and the second fine gate line extend in a staggered manner in a first direction.

10. A printing screen comprising a main grid screen and a fine grid screen as claimed in any one of claims 1 to 9, characterized in that, The main grid plate includes a base layer and a plurality of main grid lines disposed through the base layer. The plurality of main grid lines are arranged at intervals along a first direction, and the main grid lines extend along a second direction and overlap and match a column of first auxiliary connecting lines and second auxiliary connecting lines.

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