JP2015514029A - Honeycomb wire mesh - Google Patents

Abstract

A honeycomb wire mesh having a honeycomb structure formed by connecting polygonal arrays to each other, and connecting the polygonal arrays to each other to form a specific pattern, The polygons constituting the honeycomb structure of the mesh are regular hexagons, the regular hexagonal arrays are connected by non-regular hexagons, and the sides of the non-regular hexagons connect the corners of the regular hexagon as bridges. According to the technical solution, the mesh structure used in the conventional precision printing technique is unstable, and the problem that the mechanical strength of the mesh is low is solved.

Description

  The present invention specifically relates to a honeycomb wire mesh.

  With the rapid development of the economy, energy consumption is increasing more and more, and reserves of non-renewable resources such as coal and oil are decreasing day by day, so people are getting new energy (eg nuclear power, solar energy, wind energy). , Biomass energy, geothermal energy, marine energy, hydrogen energy, etc.). As a number of energy sources on the earth, solar energy is an important part of new energy research, and solar cells are a representative example of its application.

  Improving the conversion efficiency of solar cells is currently a major goal in solar cell research. In addition to selecting battery substrate materials and improving substrate production technology, the conversion of batteries can also be achieved by selecting an appropriate screen printing plate. Efficiency can be improved.

  With the advancement of the electronics industry and related industries, the application of precision printing and small packaging is also expanding. Precision printing and small packaging processes are generally associated with mask applications. Conventional masks include metal masks and composite masks. At present, the material of the metal mask is generally a nickel base alloy, but the structure of the composite mask is somewhat complicated, and includes a mesh and a photosensitive material applied to the mesh surface.

  Patent document 1 is disclosing the following characteristics about the manufacturing method of a large area nanosheet solar cell. That is, a single DSSC is formed in a long shape, and the long DSSC is connected in series with a corrosion-resistant connection band so as to form a large-area solar cell. A protective isolation layer or a low-resistance grid electrode made by a screen printing method is provided on both sides of the corrosion-resistant connection band, and the surface of the low-resistance grid electrode is covered with a protective film. Then, a plurality of long DSSC single bodies are connected in parallel to form a large-area solar cell using a low-resistance grid electrode covered with a protective film. An inflow tank is provided on the contact surface of one glass and the TCO in a large area solar cell. In the inflow tank at one end of the large area solar cell, the inflow tank is cut after pumping electrolyte and dye from the inflow tank. , Seal.

Patent Document 2 discloses the following features of a solar cell screen printing apparatus including a squeegee, an auxiliary squeegee, a forwarding blade, and a screen printing plate. That is, two baffle structures are mounted on the screen printing plate in close contact with both sides of the squeegee. The baffle structure is mainly composed of a baffle plate surface, a baffle plate frame, and a mounting holder. The bottom portion of the baffle plate surface and the screen surface may be in contact with each other in a separable manner, or may be bonded by a flexible material. The edges of the forwarding blade, the squeegee and the auxiliary squeegee are in contact with the baffle plate surface without any gaps. The printing machine head slides while bringing the squeegee and forwarding blade into contact with the baffle plate surface and moves the paste within the range surrounded by the baffle plate surface, squeegee and feeding blade on both sides, so that the paste does not flow to both sides. I am doing so.

  Patent Document 3 discloses the following regarding a pure silver screen plate for screen printing of a crystalline silicon solar cell. That is, including silicon, main grid lines, chamfer angles, and sub grid lines, the main grid lines and sub grid lines are provided in the silicon, the main grid lines and sub grid lines are provided vertically, and the chamfer angles are provided in the silicon. Is provided. Thereby, since the front electrode grid line can be effectively expanded on the silicon surface and the covering area can be expanded, the photocurrent can be effectively collected, so that the battery efficiency is improved.

  Patent Document 4 discloses a solar cell manufacturing process in which screen printing and grooving are combined twice, and this process is used to manufacture a solar cell on which electrodes are printed twice. Degree printing process. The groove processing step is a step of forming a groove in the electrode grid line region on the silicon surface to form an etching groove in the electrode grid line region. The two printing steps include (a) primary electrode printing in which a paste of an electrode to be printed is filled in an etching groove and dried to form a first layer electrode in the etching groove, and (b) the first layer electrode is formed. Secondary electrode printing in which electrodes are printed on the outer surface and a second layer electrode is formed in the electrode grid line region on the silicon surface.

  The mesh constituting the conventional composite mask is a weave type wire mesh, a polyester mesh, or the like. This type of mesh causes an influence on the paste loss of the mask to be finally formed due to the vertical and horizontal intersection characteristics in the weave type, for example, unevenness of paste loss. Therefore, in the actual mask manufacturing process, it is often necessary to reduce such influence on the weave mesh as much as possible by pressing the mesh in advance. However, such an operation cannot completely avoid the problems caused by the vertical and horizontal intersections.

  The present invention mainly provides a mesh for the above-described problem, and solves the above-described problem well.

Chinese Patent Publication No. CN101241956 Chinese Patent Publication No. CN102336051A Chinese utility model No. CN202058761U Chinese Patent Publication No. CN101969082A

  The present invention solves the problem that the mesh structure used in conventional precision printing technology is unstable and the mechanical strength of the mesh is low, and has the advantage that the structure is stable and the mechanical strength is high. A new honeycomb wire mesh is provided.

  In order to solve the above technical problem, the present invention uses the following technical solution. That is, the honeycomb mesh has a honeycomb structure formed by connecting polygonal arrays to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. It is characterized by being.

  In the above technical solution, preferably, a non-regular hexagonal array region is provided, the non-regular hexagonal array region constitutes a specific pattern on the regular hexagonal array, and the regular hexagonal array is connected by a non-regular hexagon, The sides of the regular hexagon connect the corner points of the regular hexagon as a bridge line.

  In the above technical solution, preferably, the dimension range of the wire diameter r1 of the bridge wire and the wire diameter r2 of the mesh wire constituting the regular hexagonal region is 10 um ≦ r1 ≦ r2 ≦ 80 um, and constitutes the regular hexagonal region. There are 100 to 800 meshes. The dimension range of the wire diameter r1 of the bridge line (51) and the wire diameter r2 of the mesh wire (52) constituting the regular hexagonal region is 15um ≦ r1 ≦ r2 ≦ 40um, and the mesh constituting the regular hexagonal region. Is 200-400.

  The wire diameter of the mesh line constituting the pattern area in the honeycomb wire mesh is uniform, and the honeycomb wire mesh line is a continuous non-weave type. The wire diameter of the mesh line in the pattern area in the honeycomb wire mesh is equal to or less than the wire diameter of the mesh line in the non-pattern area, and the wire diameter of the mesh line remaining in the pattern area in the honeycomb wire mesh is uniform. Yes, or both ends are thick and the center is thin. The honeycomb wire mesh has an integrally formed structure, has a smooth surface, and does not have vertical and horizontal intersections unlike a weave type. The honeycomb wire mesh is obtained by an electroforming process and is made of a pure nickel material or a nickel-based alloy material.

  In the above technical solution, preferably, the wire diameter of the mesh line constituting the pattern region in the honeycomb wire mesh is uniform, and the peripheral hole zone connected to the stress relaxation zone and the relaxation zone on the outer periphery of the non-mesh region. And the honeycomb wire mesh line is a continuous non-weave type. The mesh of the honeycomb wire mesh is 200 to 450, the wire diameter is 15 to 30 um, the thickness is 15 to 30 um, and the wire diameter of the mesh wire remaining in the pattern region in the honeycomb wire mesh is non- The wire diameter of the mesh line which is equal to or less than the wire diameter of the mesh wire in the pattern region and remains in the pattern region in the honeycomb wire mesh is uniform, or both ends are thick and the center is thin. As a preferred technical solution, the honeycomb wire mesh has an integrally formed structure, has a smooth surface, and does not have vertical and horizontal intersections unlike a weave type. The honeycomb wire mesh is obtained by an electroforming process and is made of a pure nickel material or a nickel-based alloy material.

  The present invention further includes a mask fabricated using the honeycomb wire mesh, wherein an opening size in the mask pattern region is a mesh line defect region corresponding to the pattern in the honeycomb wire mesh. Below dimension.

  In the above technical scheme, the pattern formed by the mesh line defect in the honeycomb wire mesh preferably includes a set of parallel lines and corresponds to the grid fine lines in the mask.

  The honeycomb wire mesh provided by the present invention is excellent in the following points.

  (1) The honeycomb-shaped wire mesh is obtained by an electroforming process, has a smooth surface, and does not have vertical and horizontal intersections like a weave type. In the battery electrode screen printing plate, the paste is uniformly removed during printing.

  (2) The honeycomb-shaped wire mesh does not have a mesh line in the direction of the grid fine line in the area corresponding to the grid fine line of the screen printing plate for the solar cell electrode to be adapted. The obstruction of the printing paste by the wire mesh is reduced.

  Since the non-weave wire mesh has a smooth mesh surface, the mask produced thereby is not damaged due to surface irregularities during the wiping process. The mesh may be designed with another hole area ratio, a mesh wire diameter size and a mesh wire shape as necessary, and in addition to a good paste removal effect of the mesh, the mesh life can be guaranteed.

  From the above points, the solar cell electrode screen printing plate produced by the honeycomb wire mesh can print the electrode grid line structure of a silicon solar cell excellent in “aspect ratio”. Thereby, since it is advantageous for the collection and transmission of current by the solar cell, the conversion efficiency of the solar cell is improved.

FIG. 1 is a diagram showing the entire structure of a honeycomb wire mesh. FIG. 2 is a partially enlarged view showing the wire mesh of FIG. FIG. 3 is a diagram showing the overall structure of a mesh provided with a special mesh structure. FIG. 4 is a partially enlarged view showing a mesh having a predetermined pattern. FIG. 5 is a partially enlarged view of FIG. FIG. 6 is a diagram showing the structure of a honeycomb mesh. FIG. 7 is a diagram showing the structure of a honeycomb mesh. FIG. 8 is a diagram showing the structure of a honeycomb mesh. FIG. 9 is a diagram showing the structure of a honeycomb mesh. FIG. 10 is a diagram in which a photopolymer is applied to the mesh surface.

  Hereinafter, the present invention will be described in more detail using specific examples.

  A honeycomb wire mesh, as shown in FIG. 1, the mesh has a honeycomb structure configured by arranging polygons. FIG. 1 is a diagram showing the overall structure of the mesh, and FIG. 2 is an enlarged view of a portion I (a part of the mesh body) of FIG. 1, and constitutes a honeycomb structure in the mesh. The polygon to be used is a regular hexagon. Since such a structural design is stable, the mechanical strength of the mesh is enhanced.

  FIG. 3 is a diagram showing an overall structure of another mesh provided with a special mesh structure based on the above-described mesh. The special mesh structure forms a pattern on the mesh body. As shown in FIG. 3, the pattern is composed of several sets of line structures. That is, the pattern is obtained by arranging the lines 31.

  FIG. 4 is a partially enlarged view of the mesh having the predetermined pattern, and corresponds to a portion III in FIG. A non-regular hexagonal region 41 in the figure corresponds to the line 31 in FIG. The non-regular hexagonal region 41 includes at least one set of other types of pattern arrangement. FIG. 5 is a further enlarged view of part 42 of FIG. As shown in FIG. 5, the non-regular hexagonal region 41 includes a bridging portion 51 that connects two adjacent regular hexagonal regions while being arranged based on a certain rule, and a part of a regular hexagonal boundary. Further, as shown in FIG. 5, the bridging portion 51 is a group of parallel bridging portions at equal intervals, and preferably the neck portion and the tail portion of the bridging portion 51 are connected to corner points of a regular hexagon.

  The dimensions of the wire diameter r1 of the bridging portion 51 and the wire diameter r2 of the mesh wire 52 constituting the regular hexagonal region are r1 = 13 and r2 = 80, and there are 200 meshes constituting the regular hexagonal region.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . Other structures are the same as those in the first embodiment.

  The dimensions of the wire diameter r1 of the bridging portion 51 and the wire diameter r2 of the mesh wire 52 constituting the regular hexagonal region are r1 = 15 and r2 = 40, and the number of meshes constituting the regular hexagonal region is 400. By adjusting the wire diameter dimension and the number of mesh meshes in combination, it is possible to control a reasonable hole area ratio and mesh mechanical strength, thereby satisfying different standard requirements in use.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . The main body structure is substantially the same as that of the first embodiment, but as shown in the structural diagram of the honeycomb mesh in FIG. 6, the connection position between the bridge portion and the hexagon, or two adjacent ones that need to be connected. The difference is that the opposing positions of the regular hexagonal regions are different.

  The honeycomb mesh is an electroformed flat metal plate, and is made of a nickel-based alloy material. In the regular hexagonal region at the outer edge of the mesh, the wire diameter dimension of the mesh line is larger than the wire diameter dimension of the central region, and the fixing edge hole structure is continuous with the regular hexagonal edge.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . The main body structure is substantially the same as that of the first embodiment. However, as shown in the structural diagram of the honeycomb mesh in FIG. 7, the connection position between the bridging portion and the hexagon, or two adjacent ones that need to be connected. The difference is that the opposing positions of the regular hexagonal regions are different.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . FIG. 8 is a view showing the structure of the honeycomb mesh, and the main body structure is substantially the same as that of the first embodiment, but the cross-linking portion constituting the non-regular hexagonal region and the main body of the regular hexagonal region are non-vertical. It is different in point.

  The honeycomb mesh is a flat metal plate formed by electroforming, and is made of a nickel metal material. In the regular hexagonal region at the outer edge of the mesh, the wire diameter dimension of the mesh line is larger than the wire diameter dimension of the central region, and the fixing edge hole structure is continuous with the regular hexagonal edge.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . FIG. 9 is a view showing the structure of the honeycomb mesh, and the main body structure is substantially the same as that of the first embodiment, but the cross-linking portion constituting the non-regular hexagonal area and the main body of the regular hexagonal area are non-vertical. It is different in point. The honeycomb mesh is a flat metal plate formed by electroforming, and is made of a nickel metal material. In the regular hexagonal region at the outer edge of the mesh, the wire diameter dimension of the mesh line is larger than the wire diameter dimension of the central region, and the fixing edge hole structure is continuous with the regular hexagonal edge.

  This is a honeycomb wire mesh, and the structure is almost the same as that of the fourth embodiment. FIG. 10 is a view in which a photopolymer is applied to the mesh surface. This figure corresponds to the region structure shown in FIG. That is, the structure shown in FIG. 10 is obtained by applying or press-bonding a photopolymer based on the structure shown in FIG. The photopolymer is distributed on the regular hexagonal region and some non-regular hexagonal regions in the mesh, and the region where the photopolymer is not applied or pressure-bonded forms a long opening having a bridging portion. . FIG. 10 shows the relationship between the dimension R2 of the long opening of the openwork and the width dimension R1 of the corresponding non-regular hexagonal region, where R2 = 20 μm and R1 = 300 μm.

  A honeycomb wire mesh having the same structure as that of Example 5 except that a photopolymer is applied to the mesh surface. This structure corresponds to the region structure shown in FIG. That is, the photopolymer is pressure-bonded based on the structure shown in FIG. The photopolymer is distributed on the regular hexagonal region and some non-regular hexagonal regions in the mesh, and the region where the photopolymer is not applied or pressure-bonded forms a long opening having a bridging portion. . FIG. 10 shows the relationship between the dimension of the long opening of the openwork R2 ≦ the width dimension R1 of the corresponding non-regular hexagonal region, where R2 = 30 μm and R1 = 150 μm.

  A honeycomb wire mesh having the same structure as that of Example 9 except that a photopolymer is applied to the mesh surface. This structure corresponds to the region structure shown in FIG. That is, the photopolymer is pressure-bonded based on the structure shown in FIG. The photopolymer is distributed on the regular hexagonal region and some non-regular hexagonal regions in the mesh, and the region where the photopolymer is not applied or pressure-bonded forms a long opening having a bridging portion. . Regarding the dimensional relationship, the dimension R2 of the long opening of the openwork R ≦ the width dimension R1 of the corresponding non-regular hexagonal region, R2 = 30 μm and R1 = 150 μm.

  The mesh area includes a non-mesh area, the mesh area and the non-mesh area are continuous, the non-mesh area is provided around the mesh area, and the mesh area includes two sets of mutually perpendicular mesh lines, A pattern region is provided in a central region of the mesh region in the honeycomb wire mesh, and the pattern is formed by the mesh wire missing in the horizontal direction or the vertical direction. The honeycomb-like wire mesh does not have vertical and horizontal intersections like a weave type, has an integrally formed structure, and has a smooth surface. That is, it is a non-weave type in which the honeycomb wire mesh lines are continuous.

  FIG. 2 is a partially enlarged view of the wire mesh, and the wire mesh includes mesh lines Ia intersecting each other. In this embodiment, the honeycomb wire mesh has 330 meshes, a mesh cloth wire diameter of 20 μm, and a mesh cloth thickness of 25 μm.

  FIG. 3 is an enlarged view showing a part of the stress relaxation zone in the honeycomb wire mesh. The wire diameter of the relaxation zone changes based on a constant change rule. In this embodiment, as shown in FIG. 3, the rule is that the wire diameter gradually increases from the center of the beehive wire mesh toward the edge. That is, r1 <r2 <r3, for example, r1 = 20 μm, r2 = 30 μm, r3 = 40 μm. As shown in FIG. 1, the outer edge having a wire diameter of 40 μm continues to the edge hole region of the mesh cloth. By designing in this way, when the mesh cloth receives a force in a stretched state, the mesh cloth can withstand a good external tension.

  A honeycomb wire mesh, the basic structure is the same as in Example 1, but the mesh cloth mesh is changed to 400 pieces, the mesh cloth wire diameter is changed to 25 um, and the mesh cloth thickness is changed to 20 um. ing.

  Based on this, the structure of the honeycomb wire mesh is further changed as follows.

  The honeycomb wire mesh is provided with a pattern, and the pattern in this embodiment is composed of parallel lines 4a as shown in FIG. FIG. 5 is an enlarged view of the III part of FIG. 4, 5a of FIG. 5 is a line 4a shown in FIG. 4, and a mesh line in the horizontal direction is missing at 5a.

  FIG. 6 is an enlarged view of the IV portion of FIG. 5. The wire diameter of the mesh line remaining in the pattern region where the mesh line is lost is expressed as follows: the wire diameter r1 of the honeycomb metal mesh body> the inside of the pattern region. There is a rule that the wire diameter r4 at both ends of the mesh line> the wire diameter r5 in the central region of the mesh line inside the pattern region. Further, as shown in FIG. 7, the wire diameters of the mesh lines inside the pattern region are uniform, and the honeycomb wire mesh is left in the pattern region where the mesh line is missing. There may be a rule that the diameter r1 of the main body is greater than or equal to the diameter r6 of the mesh line inside the pattern region.

  FIG. 8 is a view partially showing a mask obtained by applying a masking substance to the honeycomb wire mesh (corresponding to the portion shown in FIG. 5). As shown in the drawing, only one-way mesh line 8a exists in the opening of the mask, and this plays a role of bridging. Comparing FIG. 5 and FIG. 8, the opening dimension R1 of the honeycomb-like wire mesh line defect region ≧ the opening dimension of the mask pattern corresponding region. According to such a design, the coating difficulty coefficient of the masking substance in the mask is reduced, and the mesh line at the opening is limited to one direction, so that the number of cross-linking portions is reduced and the influence on the printing paste is reduced. A good paste removal effect by the mask is guaranteed.

  While embodiments of the present invention have been presented and described above, those skilled in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. it can. The scope of the invention is limited by the claims and their equivalents.

I mesh area II non-mesh area III partial mesh area of predetermined pattern 31 line 41 non-regular hexagon area 42 partial area of pattern 51 bridging section 52 mesh line of regular hexagon area R1 width dimension of non-regular hexagon area R2 watermark engraving Long opening dimensions

  The present invention specifically relates to a honeycomb wire mesh.

  With the rapid development of the economy, energy consumption is increasing more and more, and reserves of non-renewable resources such as coal and oil are decreasing day by day, so people are getting new energy (eg nuclear power, solar energy, wind energy). , Biomass energy, geothermal energy, marine energy, hydrogen energy, etc.). As a number of energy sources on the earth, solar energy is an important part of new energy research, and solar cells are a representative example of its application.

  Improving the conversion efficiency of solar cells is currently a major goal in solar cell research. In addition to selecting battery substrate materials and improving substrate production technology, the conversion of batteries can also be achieved by selecting an appropriate screen printing plate. Efficiency can be improved.

  With the advancement of the electronics industry and related industries, the application of precision printing and small packaging is also expanding. Precision printing and small packaging processes are generally associated with mask applications. Conventional masks include metal masks and composite masks. At present, the material of the metal mask is generally a nickel base alloy, but the structure of the composite mask is somewhat complicated, and includes a mesh and a photosensitive material applied to the mesh surface.

  Patent document 1 is disclosing the following characteristics about the manufacturing method of a large area nanosheet solar cell. That is, a single DSSC is formed in a long shape, and the long DSSC is connected in series with a corrosion-resistant connection band so as to form a large-area solar cell. A protective isolation layer or a low-resistance grid electrode made by a screen printing method is provided on both sides of the corrosion-resistant connection band, and the surface of the low-resistance grid electrode is covered with a protective film. Then, a plurality of long DSSC single bodies are connected in parallel to form a large-area solar cell using a low-resistance grid electrode covered with a protective film. An inflow tank is provided on the contact surface of one glass and the TCO in a large area solar cell. In the inflow tank at one end of the large area solar cell, the inflow tank is cut after pumping electrolyte and dye from the inflow tank. , Seal.

  Patent Document 2 discloses the following features of a solar cell screen printing apparatus including a squeegee, an auxiliary squeegee, a forwarding blade, and a screen printing plate. That is, two baffle structures are mounted on the screen printing plate in close contact with both sides of the squeegee. The baffle structure is mainly composed of a baffle plate surface, a baffle plate frame, and a mounting holder. The bottom portion of the baffle plate surface and the screen surface may be in contact with each other in a separable manner, or may be bonded by a flexible material. The edges of the forwarding blade, the squeegee and the auxiliary squeegee are in contact with the baffle plate surface without any gaps. The printing machine head slides while bringing the squeegee and forwarding blade into contact with the baffle plate surface and moves the paste within the range surrounded by the baffle plate surface, squeegee and feeding blade on both sides, so that the paste does not flow to both sides. I am doing so.

  Patent Document 3 discloses the following regarding a pure silver screen plate for screen printing of a crystalline silicon solar cell. That is, including silicon, main grid lines, chamfer angles, and sub grid lines, the main grid lines and sub grid lines are provided in the silicon, the main grid lines and sub grid lines are provided vertically, and the chamfer angles are provided in the silicon. Is provided. Thereby, since the front electrode grid line can be effectively expanded on the silicon surface and the covering area can be expanded, the photocurrent can be effectively collected, so that the battery efficiency is improved.

  Patent Document 4 discloses a solar cell manufacturing process in which screen printing and grooving are combined twice, and this process is used to manufacture a solar cell on which electrodes are printed twice. Degree printing process. The groove processing step is a step of forming a groove in the electrode grid line region on the silicon surface to form an etching groove in the electrode grid line region. The two printing steps include (a) primary electrode printing in which a paste of an electrode to be printed is filled in an etching groove and dried to form a first layer electrode in the etching groove, and (b) the first layer electrode is formed. Secondary electrode printing in which electrodes are printed on the outer surface and a second layer electrode is formed in the electrode grid line region on the silicon surface.

  The mesh constituting the conventional composite mask is a weave type wire mesh, a polyester mesh, or the like. This type of mesh causes an influence on the paste loss of the mask to be finally formed due to the vertical and horizontal intersection characteristics in the weave type, for example, unevenness of paste loss. Therefore, in the actual mask manufacturing process, it is often necessary to reduce such influence on the weave mesh as much as possible by pressing the mesh in advance. However, such an operation cannot completely avoid the problems caused by the vertical and horizontal intersections.

  The present invention mainly provides a mesh for the above-described problem, and solves the above-described problem well.

Chinese Patent Publication No. CN101241956 Chinese Patent Publication No. CN102336051A Chinese utility model No. CN202058761U Chinese Patent Publication No. CN101969082A

  The present invention solves the problem that the mesh structure used in conventional precision printing technology is unstable and the mechanical strength of the mesh is low, and has the advantage that the structure is stable and the mechanical strength is high. A new honeycomb wire mesh is provided.

  In order to solve the above technical problem, the present invention uses the following technical solution. That is, the honeycomb mesh has a honeycomb structure formed by connecting polygonal arrays to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. It is characterized by being.

  In the above technical solution, preferably, a non-regular hexagonal array region is provided, the non-regular hexagonal array region constitutes a specific pattern on the regular hexagonal array, and the regular hexagonal array is connected by a non-regular hexagon, The sides of the regular hexagon connect the corner points of the regular hexagon as a bridge line.

  In the above technical solution, preferably, the dimension range of the wire diameter r1 of the bridge wire and the wire diameter r2 of the mesh wire constituting the regular hexagonal region is 10 um ≦ r1 ≦ r2 ≦ 80 um, and constitutes the regular hexagonal region. There are 100 to 800 meshes. The dimension range of the wire diameter r1 of the bridge line (51) and the wire diameter r2 of the mesh wire (52) constituting the regular hexagonal region is 15um ≦ r1 ≦ r2 ≦ 40um, and the mesh constituting the regular hexagonal region. Is 200-400.

The wire diameter of the mesh line constituting the hexagon in the honeycomb wire mesh is uniform, and the honeycomb wire mesh line is a continuous non-weave type. The diameter of the mesh line of the pattern area in the honeycomb wire mesh is equal to or less than the diameter of the mesh line of the non-pattern area (the “non-pattern area mesh line” in the present invention is the “hexagonal mesh line”. It refers.), or the wire diameter of the bridge wire of the pattern region in the focal wire mesh of the bees is uniform, or the thicker central narrow ends. The honeycomb wire mesh has an integrally formed structure, has a smooth surface, and does not have vertical and horizontal intersections unlike a weave type. The honeycomb wire mesh is obtained by an electroforming process and is made of a pure nickel material or a nickel-based alloy material.

In the above technical solution, preferably, the wire diameter of the mesh line constituting the pattern region in the honeycomb wire mesh is uniform, and the peripheral hole zone connected to the stress relaxation zone and the relaxation zone on the outer periphery of the non-mesh region. And the honeycomb wire mesh line is a continuous non-weave type. The mesh of the honeycomb wire mesh has 200 to 450 meshes, the wire diameter is 15 to 30 um, the thickness is 15 to 30 um, and the wire diameter of the bridge in the pattern region in the honeycomb wire mesh is a non-pattern. The diameter of the mesh wire in the region is equal to or less than the wire diameter of the region , and the wire diameter of the bridge in the region of the pattern in the honeycomb wire mesh is uniform, or both ends are thick and the center is thin. As a preferred technical solution, the honeycomb wire mesh has an integrally formed structure, has a smooth surface, and does not have vertical and horizontal intersections unlike a weave type. The honeycomb wire mesh is obtained by an electroforming process and is made of a pure nickel material or a nickel-based alloy material.

The present invention further includes a mask manufactured using the honeycomb wire mesh, and an opening size of the mask is equal to or smaller than a dimension of a pattern region formed of a bridge line in the honeycomb wire mesh.

In the above technical scheme, the pattern formed by the bridges in the honeycomb wire mesh preferably includes a set of parallel lines and corresponds to grid fine lines in the mask.

  The honeycomb wire mesh provided by the present invention is excellent in the following points.

  (1) The honeycomb-shaped wire mesh is obtained by an electroforming process, has a smooth surface, and does not have vertical and horizontal intersections like a weave type. In the battery electrode screen printing plate, the paste is uniformly removed during printing.

  (2) The honeycomb-shaped wire mesh does not have a mesh line in the direction of the grid fine line in the area corresponding to the grid fine line of the screen printing plate for the solar cell electrode to be adapted. The obstruction of the printing paste by the wire mesh is reduced.

  Since the non-weave wire mesh has a smooth mesh surface, the mask produced thereby is not damaged due to surface irregularities during the wiping process. The mesh may be designed with another hole area ratio, a mesh wire diameter size and a mesh wire shape as necessary, and in addition to a good paste removal effect of the mesh, the mesh life can be guaranteed.

  From the above points, the solar cell electrode screen printing plate produced by the honeycomb wire mesh can print the electrode grid line structure of a silicon solar cell excellent in “aspect ratio”. Thereby, since it is advantageous for the collection and transmission of current by the solar cell, the conversion efficiency of the solar cell is improved.

FIG. 1 is a diagram showing the entire structure of a honeycomb wire mesh. FIG. 2 is a partially enlarged view showing the wire mesh of FIG. FIG. 3 is a diagram showing the overall structure of a mesh provided with a special mesh structure. FIG. 4 is a partially enlarged view showing a mesh having a predetermined pattern. FIG. 5 is a partially enlarged view of FIG. FIG. 6 is a diagram showing the structure of a honeycomb mesh. FIG. 7 is a diagram showing the structure of a honeycomb mesh. FIG. 8 is a diagram showing the structure of a honeycomb mesh. FIG. 9 is a diagram showing the structure of a honeycomb mesh. FIG. 10 is a diagram in which a photopolymer is applied to the mesh surface.

  Hereinafter, the present invention will be described in more detail using specific examples.

  A honeycomb wire mesh, as shown in FIG. 1, the mesh has a honeycomb structure configured by arranging polygons. FIG. 1 is a diagram showing the overall structure of the mesh, and FIG. 2 is an enlarged view of a portion I (a part of the mesh body) of FIG. 1, and constitutes a honeycomb structure in the mesh. The polygon to be used is a regular hexagon. Since such a structural design is stable, the mechanical strength of the mesh is enhanced.

  FIG. 3 is a diagram showing an overall structure of another mesh provided with a special mesh structure based on the above-described mesh. The special mesh structure forms a pattern on the mesh body. As shown in FIG. 3, the pattern is composed of several sets of line structures. That is, the pattern is obtained by arranging the lines 31.

  FIG. 4 is a partially enlarged view of the mesh having the predetermined pattern, and corresponds to a portion III in FIG. A non-regular hexagonal region 41 in the figure corresponds to the line 31 in FIG. The non-regular hexagonal region 41 includes at least one set of other types of pattern arrangement. FIG. 5 is a further enlarged view of part 42 of FIG. As shown in FIG. 5, the non-regular hexagonal region 41 includes a bridging portion 51 that connects two adjacent regular hexagonal regions while being arranged based on a certain rule, and a part of a regular hexagonal boundary. Further, as shown in FIG. 5, the bridging portion 51 is a group of parallel bridging portions at equal intervals, and preferably the neck portion and the tail portion of the bridging portion 51 are connected to corner points of a regular hexagon.

  The dimensions of the wire diameter r1 of the bridging portion 51 and the wire diameter r2 of the mesh wire 52 constituting the regular hexagonal region are r1 = 13 and r2 = 80, and there are 200 meshes constituting the regular hexagonal region.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . Other structures are the same as those in the first embodiment.

  The dimensions of the wire diameter r1 of the bridging portion 51 and the wire diameter r2 of the mesh wire 52 constituting the regular hexagonal region are r1 = 15 and r2 = 40, and the number of meshes constituting the regular hexagonal region is 400. By adjusting the wire diameter dimension and the number of mesh meshes in combination, it is possible to control a reasonable hole area ratio and mesh mechanical strength, thereby satisfying different standard requirements in use.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . The main body structure is substantially the same as that of the first embodiment, but as shown in the structural diagram of the honeycomb mesh in FIG. 6, the connection position between the bridge portion and the hexagon, or two adjacent ones that need to be connected. The difference is that the opposing positions of the regular hexagonal regions are different.

  The honeycomb mesh is an electroformed flat metal plate, and is made of a nickel-based alloy material. In the regular hexagonal region at the outer edge of the mesh, the wire diameter dimension of the mesh line is larger than the wire diameter dimension of the central region, and the fixing edge hole structure is continuous with the regular hexagonal edge.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . The main body structure is substantially the same as that of the first embodiment. However, as shown in the structural diagram of the honeycomb mesh in FIG. 7, the connection position between the bridging portion and the hexagon, or two adjacent ones that need to be connected. The difference is that the opposing positions of the regular hexagonal regions are different.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . FIG. 8 is a view showing the structure of the honeycomb mesh, and the main body structure is substantially the same as that of the first embodiment, but the cross-linking portion constituting the non-regular hexagonal region and the main body of the regular hexagonal region are non-perpendicular. It is different in point.

  The honeycomb mesh is a flat metal plate formed by electroforming, and is made of a nickel metal material. In the regular hexagonal region at the outer edge of the mesh, the wire diameter dimension of the mesh line is larger than the wire diameter dimension of the central region, and the fixing edge hole structure is continuous with the regular hexagonal edge.

  A honeycomb wire mesh having a honeycomb structure formed by connecting a polygonal array to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. . FIG. 9 is a view showing the structure of the honeycomb mesh, and the main body structure is substantially the same as that of the first embodiment, but the cross-linking portion constituting the non-regular hexagonal area and the main body of the regular hexagonal area are non-vertical. It is different in point. The honeycomb mesh is a flat metal plate formed by electroforming, and is made of a nickel metal material. In the regular hexagonal region at the outer edge of the mesh, the wire diameter dimension of the mesh line is larger than the wire diameter dimension of the central region, and the fixing edge hole structure is continuous with the regular hexagonal edge.

A mask made of a honeycomb wire mesh . FIG. 10 is a view in which a photopolymer is applied to the mesh surface. This figure corresponds to the region structure shown in FIG. That is, the structure shown in FIG. 10 is obtained by applying or press-bonding a photopolymer based on the structure shown in FIG. The photopolymer is distributed on the regular hexagonal region and some non-regular hexagonal regions in the mesh, and the region where the photopolymer is not applied or pressure-bonded forms a long opening having a bridging portion. . FIG. 10 shows the relationship between the dimension R2 of the long opening of the openwork and the width dimension R1 of the corresponding non-regular hexagonal region, where R2 = 20 μm and R1 = 300 μm.

This is a mask made of a honeycomb wire mesh , and its structure corresponds to the region structure shown in FIG. Referring to FIG. 10, that is, the photopolymer is applied or pressure-bonded based on the structure shown in FIG. The photopolymer is distributed on the regular hexagonal region and some non-regular hexagonal regions in the mesh, and the region where the photopolymer is not applied or pressure-bonded forms a long opening having a bridging portion. . FIG. 10 shows the relationship between the dimension of the long opening of the openwork R2 ≦ the width dimension R1 of the corresponding non-regular hexagonal region, where R2 = 30 μm and R1 = 150 μm.

This is a mask made of a honeycomb wire mesh, and its structure corresponds to the region structure shown in FIG. Referring to FIG. 10, that is, the photopolymer is applied or pressure-bonded based on the structure shown in FIG. The photopolymer is distributed on the regular hexagonal region and some non-regular hexagonal regions in the mesh, and the region where the photopolymer is not applied or pressure-bonded forms a long opening having a bridging portion. . Regarding the dimensional relationship, the dimension R2 of the long opening of the openwork R ≦ the width dimension R1 of the corresponding non-regular hexagonal region, R2 = 30 μm and R1 = 150 μm.
According to such a design, the coating difficulty coefficient of the masking substance in the mask is reduced, and the mesh line at the opening is limited to one direction, so that the number of cross-linking portions is reduced and the influence on the printing paste is reduced. A good paste removal effect by the mask is guaranteed.

  The honeycomb wire mesh does not have vertical and horizontal intersections like the weave type, has an integrally formed structure, and has a smooth surface. That is, it is a non-weave type in which the honeycomb wire mesh lines are continuous.

  In this embodiment, the honeycomb wire mesh has 330 meshes, a mesh cloth wire diameter of 20 μm, and a mesh cloth thickness of 25 μm.

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  A honeycomb wire mesh, the basic structure is the same as in Example 1, but the mesh cloth mesh is changed to 400 pieces, the mesh cloth wire diameter is changed to 25 um, and the mesh cloth thickness is changed to 20 um. ing.

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  While embodiments of the present invention have been presented and described above, those skilled in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. it can. The scope of the invention is limited by the claims and their equivalents.

I mesh area II non-mesh area III partial mesh area of predetermined pattern 31 line 41 non-regular hexagon area 42 partial area of pattern 51 bridging section 52 mesh line of regular hexagon area R1 width dimension of non-regular hexagon area R2 watermark engraving Long opening dimensions

Claims (8)

A honeycomb mesh,
A honeycomb structure is formed by connecting polygonal arrays to each other, and the polygons forming the honeycomb structure in the mesh are regular hexagons. mesh. A non-regular hexagonal array region is provided;
The non-regular hexagonal array region constitutes a specific pattern on the regular hexagonal array,
Regular hexagonal arrays are connected by non-regular hexagons,
The honeycomb mesh according to claim 1, wherein the sides of the non-regular hexagon connect the corner points of the regular hexagon as a bridge line. The dimension range of the wire diameter r1 of the bridge wire and the wire diameter r2 of the mesh wire constituting the regular hexagonal region is 10 um ≦ r1 ≦ r2 ≦ 80 um,
2. The honeycomb mesh according to claim 1, wherein the mesh constituting the regular hexagonal region is 100 to 800 pieces. The dimension range of the wire diameter r1 of the bridge line (51) and the wire diameter r2 of the mesh wire (52) constituting the regular hexagonal region is 15um ≦ r1 ≦ r2 ≦ 40um,
2. The honeycomb mesh according to claim 1, wherein the number of meshes constituting the regular hexagonal region is 200 to 400. 3. The wire diameter of the mesh line constituting the pattern region in the honeycomb wire mesh is uniform,
2. The honeycomb mesh according to claim 1, wherein the honeycomb wire mesh line is a continuous non-weave type. The wire diameter of the mesh line of the pattern region in the honeycomb wire mesh is equal to or less than the wire diameter of the mesh wire of the non-pattern region,
3. The honeycomb mesh according to claim 2, wherein the wire diameter of the mesh line remaining in the pattern area in the honeycomb wire mesh is uniform, or both ends are thick and the center is thin.   2. The honeycomb mesh according to claim 1, wherein the honeycomb wire mesh has an integrally formed structure, has a smooth surface, and does not have vertical and horizontal intersections as in a weave shape.   8. The honeycomb mesh according to claim 7, wherein the honeycomb mesh is obtained by an electroforming process and is made of a pure nickel material or a nickel-based alloy material.

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