Screen printing plate

Abstract

The invention discloses a screen printing plate. The screen printing plate comprises a screen printing plate body and a surface treatment layer, the screen printing plate body comprises a printing face, a bottom face and a plurality of grid lines arranged in a penetrating mode, and the printing face and the bottom face are oppositely arranged. The surface treatment layer is arranged on the printing surface and / or the bottom surface or in the grid line, and the surface treatment layer comprises a micro-nano structure or a coating structure. The surface treatment layer is arranged on the printing surface and / or the bottom surface of the screen printing plate body, so that the resistance of a scraper on the printing surface during printing can be controlled, the ink amount is controlled, and the uniformity and the inking property are improved; the surface energy of the bottom surface can be changed, and the quality of the screen printing plate is improved; the anti-scraping capability of the bottom surface can be improved; the hardness of the lower surface can be changed, and the performance of the screen body is improved.

Description

Technical Field

[0001] The present application relates to the technical field of screen printing, and particularly to a printing screen. Background Art

[0002] A printing screen is an important tool in the electronic field. Taking the printing of the electrodes of a solar cell as an example, a paste is poured onto the printing screen, and a squeegee is used to drive the paste to move on the printing screen, so that the paste passes through the mesh holes on the printing screen and is extruded onto the solar cell to form a corresponding pattern on the solar cell to form the electrodes of the solar cell.

[0003] Due to the nodes formed by the intersection of the warp and weft lines in the traditional printing screen, knots will exist in the finally prepared electrodes, which will affect the conductivity or conversion efficiency of the prepared electrode film. To solve the above problems, the existing printing screens adopt a knotless design and use expanded metal; however, the expanded metal has problems such as difficult squeegee control and uneven ink supply during printing, and also has problems of unstable performance and low lifespan. Therefore, there is an urgent need to provide a printing screen with a new structure to solve the technical problems in the prior art. Summary of the Invention

[0004] Based on this, it is necessary to provide a printing screen to solve the above technical problems.

[0005] One technical solution of the present application is as follows:

[0006] A printing screen, comprising:

[0007] A screen body, which includes a printing surface, a bottom surface, and a plurality of grid lines penetrating therethrough, and the printing surface and the bottom surface are oppositely arranged;

[0008] A surface treatment layer, which is arranged on the printing surface and / or the bottom surface or within the grid lines, and the surface treatment layer includes a micro-nano structure or a coating structure.

[0009] In one embodiment, the surface treatment layer includes a micro-nano structure arranged on the printing surface, and the micro-nano structure includes a grid texture, an AG texture, a wire drawing texture, or a composite texture.

[0010] In one embodiment, the micro-nano structure protrudes and / or depresses from the printing surface.

[0011] In one embodiment, the screen body includes a first metal layer and a second metal layer arranged in a stacked manner, the printing surface is arranged on the first metal layer, the bottom surface is arranged on the second metal layer, and the micro-nano structure is recessed from the printing surface and the recessed depth is less than or equal to the thickness of the first metal layer.

[0012] In one embodiment, the thickness range of the grid texture is 3μm - 25μm or the depth range is 3μm - 25μm, the average pore diameter of the grid of the grid texture is 10μm - 200μm, and the width range of the wire mesh is 5μm - 150μm; the thickness of the AG texture does not exceed 25μm or the depth does not exceed 25μm, and the width range of the AG texture is 5μm - 150μm; the thickness range of the wire drawing texture is 3μm - 25μm or the depth range is 3μm - 25μm, and the width range of the wire drawing texture is 5μm - 150μm.

[0013] In one embodiment, the composite texture is a grid texture and an AG structure disposed on the grid texture, the height range of the AG structure is 10nm - 5μm, and the width range of the AG structure is 50nm - 50μm.

[0014] In one embodiment, the grid line is defined to extend in the Y direction, and the X direction intersecting with the Y direction is defined as the printing direction; in the X direction, the micro - nano structure is provided with an adjustment portion for adjusting the resistance of the doctor blade during printing.

[0015] In one embodiment, in the Z direction perpendicular to the plane where the X direction and the Y direction are located, when the adjustment portion is a depression, the depth range is 3μm - 25μm, and when the adjustment portion is a protrusion, the thickness range is 3μm - 25μm.

[0016] In one embodiment, the adjustment portion is a pointed end portion pointing in the opposite direction of the X direction.

[0017] In one embodiment, the adjustment portion is a linear shape arranged at an angle with the X direction.

[0018] In one embodiment, the micro - nano structure is a grid texture, and the grid texture includes a first grid line and a second grid line arranged cross -wise, and the first grid line and / or the second grid line is arranged at an angle with the X direction.

[0019] In one embodiment, the angle range is 5° - 85°.

[0020] In one embodiment, the surface treatment layer includes a micro - nano structure disposed on the bottom surface, and the micro - nano structure includes an AG texture.

[0021] In one embodiment, the surface treatment layer includes a coating structure disposed on the bottom surface, and the coating structure is a fluorine - containing layer, a softening layer or a plating layer.

[0022] In one embodiment, the screen body includes a first metal layer and a second metal layer arranged in a stacked manner. The gate line includes a first wire groove located in the first metal layer and a second wire groove located in the second metal layer. The first wire groove and the second wire groove are overlapped and communicated. The printing surface is arranged on the first metal layer, and the bottom surface is arranged on the second metal layer. A fluorine-containing layer or a plating layer is arranged on the side wall of the first wire groove and / or the second wire groove.

[0023] Advantages of the present application: The printing surface and / or the bottom surface of the screen body of the printing screen in the present application are provided with a surface treatment layer, which can control the resistance of the squeegee on the printing surface during printing, control the ink amount, improve the uniformity and ink delivery performance; can change the surface energy of the bottom surface, improve the quality of the printing screen; can improve the scratch resistance of the bottom surface; can change the hardness of the lower surface, improve the performance of the screen body. The screen body is provided with a surface treatment layer to obtain a high-performance printing screen, improve the quality, increase the service life, and improve the printing effect. Description of the Drawings

[0024] Figure 1 is a schematic plan view of a printing screen according to the present application;

[0025] Figure 2 is Figure 1 a schematic cross-sectional view of the printing screen;

[0026] Figure 3 is another schematic cross-sectional view of a printing screen according to the present application;

[0027] Figure 4 is another schematic cross-sectional view of a printing screen according to the present application;

[0028] Figure 5 is another schematic plan view of a printing screen according to the present application;

[0029] Figure 6 is another schematic cross-sectional view of a printing screen according to the present application;

[0030] Figure 7 is another schematic cross-sectional view of a printing screen according to the present application;

[0031] Figure 8 is another schematic cross-sectional view of a printing screen according to the present application;

[0032] Figure 9 is another schematic cross-sectional view of a printing screen according to the present application;

[0033] Figure 10 is another schematic cross-sectional view of a printing screen according to the present application;

[0034] Figure 11Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0035] Figure 12 Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0036] Figure 13 Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0037] Figure 14 Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0038] Figure 15 Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0039] Figure 16 Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0040] Figure 17 Another schematic cross-sectional structure diagram of a printing stencil of the present application;

[0041] Figure 18 Another schematic cross-sectional structure diagram of a printing stencil of the present application. Detailed implementation manners

[0042] For the convenience of understanding the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described below. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0043] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0045] The present application discloses a printing screen plate, which includes a screen plate body and a surface treatment layer. The screen plate body includes a printing surface, a bottom surface, and a plurality of grid lines penetrating therethrough, and the printing surface and the bottom surface are oppositely arranged. The surface treatment layer is disposed on the printing surface and / or the bottom surface and / or inside the grid lines, and the surface treatment layer includes a micro-nano structure and a coating structure. By disposing the surface treatment layer on the printing surface and / or the bottom surface of the screen plate body, the resistance of the squeegee on the printing surface during printing can be controlled, the ink amount can be controlled, and the uniformity and ink delivery performance can be improved; the surface energy of the bottom surface can be changed to improve the quality of the printing screen plate; the scratch resistance of the bottom surface can be improved; the hardness of the lower surface can be changed to improve the performance of the screen plate body. By disposing the surface treatment layer on the screen plate body, a high-performance printing screen plate can be obtained, the quality can be improved, the service life can be increased, and the printing effect can be improved.

[0046] In one embodiment, the surface treatment layer includes a micro-nano structure disposed on the printing surface, and the micro-nano structure includes a grid texture, an AG texture, a wire drawing texture, or a composite texture. Disposing the micro-nano structure on the printing surface can control the resistance of the squeegee during printing to control the ink amount and improve the printing quality. The micro-nano structure protrudes and / or recesses from the printing surface. The surface treatment layer can be non-integrally disposed on the printing surface, for example, the micro-nano structure is disposed on the printing surface by means of coating or plating. The surface treatment layer can also be integrally disposed on the printing surface. The micro-nano structure can integrally protrude from the printing surface, or the micro-nano structure can recess from the printing surface. The grid texture is a texture distributed in a grid shape, and the grid lines protrude and / or recess. The AG texture is a plurality of protruding structures and / or recessed structures, and at least one of the parameters such as the height, depth, width, length, density, period, radian, and cross-section of the protruding structure or the recessed structure is randomly set. For example, the height, period, and radian of a plurality of protruding structures are randomly set to form an AG texture. The wire drawing texture is a wire drawing-like texture. The composite texture is a superposition of two textures, such as setting an AG structure on the grid texture, setting an AG structure on the wire drawing texture, setting an AG structure on the AG texture, setting a wire drawing texture on the grid texture, and so on. The AG structure is a plurality of protruding structures and / or recessed structures, and at least one of the parameters such as the height, depth, width, length, density, period, radian, and cross-section of the protruding structure or the recessed structure is randomly set. The thickness of the AG texture does not exceed 25 μm or the depth range does not exceed 25 μm, and the width range of the AG texture is 5 μm - 150 μm; the height range of the AG structure is 10 nm - 5 μm, and the width range of the AG structure is 50 nm - 50 μm.

[0047] In one embodiment, the mesh body includes a first metal layer and a second metal layer arranged in a stacked manner. The printing surface is disposed on the first metal layer, and the bottom surface is disposed on the second metal layer. The micro-nano structure is recessed from the printing surface, and the recessed depth is less than or equal to the thickness of the first metal layer. The micro-nano structure is in a groove shape and can be disposed through or non-through the first metal layer. By providing the groove-shaped micro-nano structure on the first metal layer, the printing surface located on the first metal layer has good printing performance, can effectively control the resistance of the squeegee during printing, so as to control the ink amount and improve the printing quality.

[0048] In one embodiment, in order to effectively control the resistance of the squeegee, the thickness range of the grid texture is 3μm - 25μm or the depth range is 3μm - 25μm, the average pore diameter of the grid of the grid texture is 10μm - 200μm, and the width range of the wire is 5μm - 150μm; the thickness of the AG texture does not exceed 25μm or the depth range does not exceed 25μm, and the width range of the AG texture is 5μm - 150μm; the thickness range of the wire drawing texture is 3μm - 25μm or the depth range is 3μm - 25μm, and the width range of the wire drawing texture is 5μm - 150μm.

[0049] In one embodiment, the composite texture is a grid texture and an AG structure disposed on the grid texture. The thickness range of the grid texture is 3μm - 25μm or the depth range is 3μm - 25μm, the average pore diameter of the grid of the grid texture is 10μm - 200μm, and the width range of the wire is 5μm - 150μm; the height range of the AG structure is 10nm - 5μm, and the width range of the AG structure is 50nm - 50μm, which can effectively control the resistance of the squeegee during printing, so as to control the ink amount and improve the printing quality.

[0050] In one embodiment, the grid lines are defined to extend along the Y direction, and the X direction intersecting with the Y direction is defined as the printing direction. In the X direction, the micro-nano structure is provided with an adjustment portion for adjusting the resistance of the squeegee during printing. In the Z direction perpendicular to the plane where the X direction and the Y direction are located, the thickness range of the adjustment portion is 3μm - 25μm or the depth range is 3μm - 25μm. The adjustment portion is disposed in the X direction when the squeegee prints and has a certain thickness in the Z direction, which can play a certain blocking role on the squeegee, thereby adjusting the force of the squeegee and ensuring the force, smoothness and uniformity of ink scraping.

[0051] In one embodiment, the adjustment portion is a pointed end portion pointing in the opposite direction of the X direction. The pointed end portion is beneficial to blocking the squeegee without restricting the squeegee, so as to be beneficial to playing an adjustment role.

[0052] In one embodiment, the adjusting portion is in a strip shape arranged at an angle with the X direction. The adjusting portion can be a strip-shaped grid line, or can be a strip-shaped AG texture or a brushed texture. The strip-shaped adjusting portion forms an angle with the ink scraping direction of the squeegee, and a preset adjusting effect can be set according to the achieved angle.

[0053] In one embodiment, the micro-nano structure is a grid texture, and the grid texture includes a first grid line and a second grid line arranged crosswise. The first grid line and / or the second grid line are arranged at an angle with the X direction. Preferably, the angle range is 15° - 75°. In one embodiment, the X-axis is perpendicular to the Y-axis. Within the coordinates of the X-axis and the Y-axis, the grid texture is arranged as a whole in an inclined manner. The first grid line and the second grid line are respectively arranged obliquely to the X-axis. An intersection point of the first grid line and the second grid line forms an adjusting portion pointing in the opposite direction of the X-axis, and the first grid line and the second grid line forming this intersection point are also adjusting portions, which have a good adjusting effect.

[0054] In one example, the surface treatment layer includes a micro-nano structure arranged on the bottom surface, and the micro-nano structure includes an AG texture. The AG texture is arranged on the bottom surface to form a fluffy surface on the bottom surface, playing a role in scratch resistance and obtaining a printing screen with higher quality.

[0055] In one embodiment, the surface treatment layer includes a coating structure arranged on the bottom surface, and the coating structure is a fluorine-containing layer, a softening layer or a plating layer to improve the surface energy of the bottom surface and obtain a printing screen with higher quality.

[0056] In one embodiment, the screen body includes a first metal layer and a second metal layer arranged in a stacked manner. The grid lines include a first wire groove located in the first metal layer and a second wire groove located in the second metal layer. The first wire groove and the second wire groove are arranged in an overlapping manner. The printing surface is arranged on the first metal layer, and the bottom surface is arranged on the second metal layer. A fluorine-containing layer or a plating layer is arranged on the side wall of the first wire groove and / or the second wire groove to improve the surface energy of the first wire groove or the second wire groove, stabilize the structure, and obtain a printing screen with higher quality.

[0057] Please refer to the following figures for an example description of the printing screen of the present application.

[0058] Please refer to Figure 1 and Figure 2, this application discloses a printing stencil 100, which includes a stencil body 101 and a surface treatment layer 102. The stencil body 101 includes a first metal layer 1, a second metal layer 2 and grid lines. The first metal layer 1 and the second metal layer 2 are stacked. The stencil body 101 includes a printing surface 11 located on the first metal layer 1 and a bottom surface 21 located on the second metal layer 2, and the printing surface 11 and the bottom surface 21 are arranged opposite to each other. The grid lines include a first wire groove 12 penetrating the first metal layer 1 and a second wire groove 22 penetrating the second metal layer 2, and the first wire groove 12 and the second wire groove 22 are overlapped and communicated with each other. The surface treatment layer 102 includes a micro-nano structure 3 provided on the printing surface 11. In this embodiment, the micro-nano structure 3 includes a grid texture 31 recessed from the printing surface 11. The grid texture 31 can control the resistance of the squeegee (not shown) on the printing surface 11 during printing, thereby controlling the ink amount, improving the uniformity and ink supply performance.

[0059] Please continue to refer to Figure 1 and Figure 2 , the grid lines are defined as extending in the Y direction, and the printing direction is defined as the X direction; in this embodiment, the X direction is perpendicular to the Y direction; and the direction perpendicular to the plane where the X direction and the Y direction are located is defined as the Z direction. The grid texture 31 includes first grid lines 311 and second grid lines 312 arranged crosswise, and the grid texture 31 is inclined as a whole within the X and Y coordinates, and the first grid lines 311 and the second grid lines 312 are respectively arranged at an angle with the X direction. Preferably, the angle range is 5° - 85°. The intersection points of the first grid lines 311 and the second grid lines 312 pointing in the opposite direction of the X axis are defined as adjustment portions 313, and the first grid lines 311 and the second grid lines 312 forming the intersection points are also adjustment portions. The adjustment portion 313 is a pointed end portion pointing in the opposite direction of the X direction, and the first grid lines 311 and the second grid lines 312 forming the intersection points are strip-shaped adjustment portions arranged at an angle with the X direction. By arranging the adjustment portions in the X direction, an effective resistance effect can be generated on the squeegee, which is used to adjust the squeegee during printing to ensure the quality of ink scraping. In order to effectively control the resistance of the squeegee, the depth range of the grid texture 31 is less than or equal to the thickness of the first metal layer 1, and the preferred range is 3μm - 25μm. Further, the width range of the first grid lines 311 is 5μm - 150μm, the width range of the second grid lines 312 is 5μm - 150μm, and the average pore diameter of the grid of the grid texture 31 is 10μm - 200μm; thus, it will not hinder the squeegee and can effectively control the resistance of the squeegee. The angles of several first grid lines 311 are the same or substantially the same, and the difference does not exceed 5%; the angles of several second grid lines 312 are the same or substantially the same, and the difference does not exceed 5%, so as to ensure the control effect.

[0060] Please refer to Figure 2, the depth of the grid texture 31 in the Z direction is equal to the thickness of the first metal layer 1, that is, the grid texture 31 is recessed from the printing surface 11 to penetrate through the first metal layer 1. In other embodiments, please refer to Figure 3 , the depth of the grid texture 32 in the Z direction is less than the thickness of the first metal layer 1, that is, the grid texture 32 is recessed from the printing surface 11 and does not penetrate through the first metal layer 1. The surface treatment layer 102 obtained by the micro-nano structure 3 formed by the depth of the grid texture 32 greater than or equal to 3μm is disposed on the printing surface 11, which can control the resistance of the squeegee and improve the printing quality. The micro-nano structure 3 is recessed on the printing surface 11. In other embodiments, it can also be protruded on the printing surface 11. Please refer to Figure 4 As shown, the grid texture 33 is protruded on the printing surface 11 and can be formed on the printing surface 11 by means of printing, laser etching, spraying, coating and imprinting. The height range of the protruded grid texture 33 is 3μm - 25μm, so as to act on the squeegee without affecting the use of the squeegee and can adjust the squeegee resistance to improve the printing quality. In other embodiments, the grid texture has both protruded and recessed settings.

[0061] Please refer to Figure 2 , the micro-nano structure 3 is the grid texture 31; in other embodiments, the micro-nano structure 3 is the wire drawing texture 34. Please refer to Figure 5 As shown. The wire drawing texture 34 is inclined relative to the X axis, and the included angle with the X axis ranges from 5° to 85°, the width range is 5μm - 150μm, and it can be protruded or recessed on the printing surface 11. When protruded, the thickness range is 3μm - 25μm, and when recessed, the depth is 3μm - 25μm. One end of the wire drawing texture 34 forms an adjustment portion 341, which also has a good adjustment effect. The width, length and spacing of the wire drawing texture 34 are variably set, and all are inclined in the same direction. In other embodiments, the angles of the inclined directions differ by no more than 5%. The wire drawing texture 34 can be protruded and / or recessed on the printing surface 11. Please refer to Figure 6 As shown, the micro-nano structure 3 is the AG texture 35. In this embodiment, the AG texture 35 is disposed on the surface of the printing surface 11. The height, width and spacing of the AG texture 35 are randomly set on the printing surface 11, and are protruded and / or recessed on the printing surface 11. One end of the AG texture 35 facing the opposite direction of the X direction is set as the adjustment portion 351. The height range of the AG texture is not more than 25μm, and the depth is not more than 25μm. The AG texture provided on the printing surface 11 can control the squeegee resistance and improve the printing quality.

[0062] Please refer to Figure 7, the surface treatment layer 102 is a micro-nano structure 4 disposed on the bottom surface 21. The micro-nano structure 4 includes an AG texture 41. The AG texture 41 is provided on the bottom surface 21 in a convex and / or concave manner. The height of the AG texture does not exceed 25 μm, and the depth does not exceed 25 μm, so as to form a velvet surface on the bottom surface 21, playing a role in scratch resistance and improving quality.

[0063] Please refer to Figure 8 , the surface treatment layer 102 is a micro-nano structure. The micro-nano structure includes an AG texture 36 disposed on the printing surface and an AG texture 42 disposed on the bottom surface. The AG texture 36 can control the doctor blade resistance, and the AG texture 42 has a scratch-resistant effect, improving quality. The thickness of the AG texture 36 does not exceed 25 μm or the depth does not exceed 25 μm, and the width range of the AG texture is 5 μm - 150 μm. In other embodiments, the AG texture 36 is an AG structure, the height range of the AG structure is 10 nm - 5 μm, and the width range of the AG structure is 50 nm - 50 μm.

[0064] Please refer to Figure 9 , the surface treatment layer 102 is a coating structure 51 disposed on the bottom surface 21. The coating structure 51 is a fluorine-containing layer or a softening layer, and the thickness range of the coating structure 51 is 5 μm - 100 μm, so as to improve the surface energy of the bottom surface, thereby improving product quality. In other embodiments, the surface treatment layer 102 is a plating layer 51 disposed on the bottom surface 21, and the thickness of the plating layer 51 is 20 nm - 5 μm, so as to improve the bottom surface and improve product quality. Please refer to Figure 10 , the surface treatment layer 102 is a coating structure 52 or a plating layer 52 disposed on the printing surface 11. In other embodiments, please refer to Figure 11 , the surface treatment layer 102 is disposed on both the printing surface 11 and the bottom surface 21, and can be a fluorine-containing layer, a softening layer or a plating layer; please refer to Figure 12 , the surface treatment layer 102 is disposed inside the grid lines, i.e., on the side walls of the first wire groove 12 and the second wire groove 22, so as to improve the surface energy and improve the quality of the wire grooves; please refer to Figure 13 , the surface treatment layer 102 is disposed on the printing surface 11, the first wire groove 12, the bottom surface 21, and the second wire groove 22, so as to comprehensively improve the surface and improve the quality of the printing screen.

[0065] Please refer to Figure 14 , the surface treatment layer 102 includes a grid texture 37 disposed on the printing surface 11 and a plating layer 53 disposed on the bottom surface 21. The grid texture 37 controls the doctor blade resistance, and the plating layer 53 improves the surface energy, obtaining a printing screen of higher quality and improving the printing quality. Please refer to Figure 15 , the surface treatment layer includes a grid texture 38 disposed on the printing surface 11, a plating layer 54 disposed on the side walls of the first wire groove 12 and the second wire groove 22, and a fluorine-containing layer 55 disposed on the bottom surface 21. Please refer to Figure 16, the surface treatment layer includes a grid texture 39 provided on the printing surface 11, a plating layer 56 provided on the grid texture 39, the printing surface 11, the first wire groove 12, the second wire groove 22, and the bottom surface, etc. The surface treatment layer is provided on at least one of the printing surface 11, the side wall of the first wire groove 12, the side wall of the second wire groove 22, and the bottom surface, achieving surface treatment functions such as controlling the blade resistance, increasing the surface energy, scratch resistance, softening, etc., thereby improving the printing quality, increasing the product life and quality, and reducing the cost.

[0066] Please refer to Figure 17 , the surface treatment layer 102 includes a composite texture provided on the printing surface. The composite texture includes a grid texture 61 and an AG structure 62 provided on the grid texture 61. The depth range of the grid texture 61 is 3μm - 25μm, the average pore diameter of the grid of the grid texture 61 is 10μm - 200μm, and the width range of the wire is 5μm - 150μm; the height range of the AG structure is 10nm - 5μm, and the width range of the AG structure is 50nm - 50μm. The grid lines of the grid texture 61 intersect perpendicular or non-perpendicular to each other, and the grid lines are arranged at an angle with the X direction, and the angle range is 0 - 90°, and the width of the grid lines is approximately the same or inconsistent. The AG structure 62 is provided on the surface of the grid texture 61. In other embodiments, the AG structure can be provided on the surface of the grid texture 61, on the side wall of the grid lines, and in the mesh holes. The AG structure is evenly distributed, regionally distributed, or locally distributed. Achieving surface treatment functions such as controlling the blade resistance, increasing the surface energy, scratch resistance, softening, etc., thereby improving the printing quality, increasing the product life, strength, toughness, and quality, and reducing the cost.

[0067] Please refer to Figure 18 , the surface treatment layer includes a composite texture. The composite texture includes a grid texture 63 provided on the printing surface and an AG structure 64 provided on the grid texture 63. The surface treatment layer further includes a plating layer 65 provided on the side walls of the first wire groove, the second wire groove, and the bottom surface. Achieving surface treatment functions such as controlling the blade resistance, increasing the surface energy, scratch resistance, softening, etc., thereby improving the printing quality, increasing the product life, strength, toughness, and quality, and reducing the cost.

[0068] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. Many specific details have been set forth in the above description to fully understand the present application. However, the present application 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 connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed above. Moreover, the technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0069] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A printing screen plate, characterized in that, It includes: A screen printing plate body, which includes a printing surface, a bottom surface, and a plurality of grid lines penetrating therethrough, and the printing surface and the bottom surface are oppositely arranged; A surface treatment layer, which is disposed on the printing surface and / or the bottom surface or within the grid lines, and the surface treatment layer includes a micro-nano structure or a coating structure.

2. A printing screen according to claim 1, characterized in that, The surface treatment layer includes a micro-nano structure disposed on the printing surface, and the micro-nano structure includes a grid texture, an AG texture, a wire drawing texture, or a composite texture.

3. A printing screen according to claim 2, characterized in that, The micro-nano structure protrudes and / or recesses from the printing surface.

4. A printing screen according to claim 2, characterized in that, The screen printing plate body includes a first metal layer and a second metal layer stacked, the printing surface is disposed on the first metal layer, the bottom surface is disposed on the second metal layer, and the micro-nano structure is recessed from the printing surface and the recessed depth is less than or equal to the thickness of the first metal layer.

5. A printing screen according to claim 2, wherein, The thickness range of the grid texture is 3μm - 25μm or the depth range is 3μm - 25μm, the average aperture of the grid of the grid texture is 10μm - 200μm, and the width range of the wire is 5μm - 150μm; the thickness of the AG texture does not exceed 25μm or the depth does not exceed 25μm, and the width range of the AG texture is 5μm - 150μm; the thickness range of the wire drawing texture is 3μm - 25μm or the depth range is 3μm - 25μm, and the width range of the wire drawing texture is 5μm - 150μm.

6. A printing screen according to claim 2, characterized in that, The composite texture is a grid texture and an AG structure disposed on the grid texture, the height range of the AG structure is 10nm - 5μm, and the width range of the AG structure is 50nm - 50μm.

7. A printing screen according to claim 2, wherein The grid lines are defined to extend along the Y direction, the printing direction is the X direction, and the X direction and the Y direction are crosswise arranged; in the X direction, the micro-nano structure is provided with an adjustment portion for adjusting the resistance of the squeegee during printing.

8. A printing screen according to claim 7, characterized in that, In the Z direction perpendicular to the plane where the X direction and the Y direction are located, when the adjustment portion is recessed, the depth range is 3μm - 25μm, and when the adjustment portion is protruded, the thickness range is 3μm - 25μm.

9. A printing screen according to claim 7, characterized in that, The adjustment portion is a pointed end portion pointing in the opposite direction of the X direction.

10. A printing screen according to claim 7, characterized in that, The adjustment portion is strip-shaped and arranged at an angle with the X direction.

11. A printing screen according to claim 2, wherein, The micro-nano structure is a grid texture, and the grid texture includes a first grid line and a second grid line arranged crosswise, and the first grid line and / or the second grid line is arranged at an angle with the X direction.

12. A printing screen according to claim 11, wherein, The angle range is 5° - 85°.

13. A printing screen according to claim 1, characterized in that, The surface treatment layer includes a micro-nano structure disposed on the bottom surface, and the micro-nano structure includes an AG texture.

14. A printing screen according to claim 1, characterized in that, The surface treatment layer includes a coating structure disposed on the bottom surface, and the coating structure is a fluorine-containing layer, a softening layer, or a plating layer.

15. A printing screen according to claim 1, characterized in that, The screen printing plate body includes a first metal layer and a second metal layer stacked, the grid lines include a first wire groove located in the first metal layer and a second wire groove located in the second metal layer, the first wire groove and the second wire groove are overlapped and communicated, the printing surface is disposed on the first metal layer, the bottom surface is disposed on the second metal layer, and a fluorine-containing layer or a plating layer is disposed on the side wall of the first wire groove and / or the second wire groove.

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