JP6050889B2 - Honeycomb wire mesh - Google Patents

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 a gap. 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. In other words, a honeycomb main body mesh is formed of a first mesh structure in which regular hexagons are arranged in a honeycomb shape, a first portion of the mesh main body region, and a first part of the mesh main body region. 2 having a pattern region configured to form a second mesh structure between the two parts, each of the meshes forming the second mesh structure has six sides, and two of the six sides are Sharing with the regular hexagon arranged in the first part of the mesh body region, and sharing the other two sides of the six sides with the regular hexagon arranged in the second part of the mesh body region, The last two sides of the six sides form a bridge line connecting the regular hexagonal vertex arranged in the first part and the regular hexagonal vertex arranged in the second part, respectively.

In the above technical scheme, two of the six sides of the mesh constituting the second mesh structure are shared with two regular hexagons arranged in the first part of the mesh body region, and the other two sides Can be shared with one regular hexagon arranged in the second part of the mesh body region.

In the above technical scheme, two of the six sides of the mesh constituting the second mesh structure are shared with two regular hexagons arranged in the first part of the mesh body region, and the other two sides Can be shared with two regular hexagons arranged in the second portion of the mesh body region.

In the above technical scheme, among the six sides of the mesh constituting the second mesh structure, two sides are shared with one regular hexagon arranged in the first part of the mesh body region, and the other two sides are shared. It can be shared with one regular hexagon arranged in the second part of the mesh body region.

In the above technical scheme, the diameter of the bridge wire may be equal to or less than the mesh wire diameter of the mesh body region, and the wire diameter of the bridge wire may be uniform or thick at both ends and thin at the center.

In the above technical solution, the size range of the wire diameter r1 of the bridge line and the wire diameter r2 of the mesh wire constituting the mesh body region is 10 um ≦ r1 ≦ r2 ≦ 80 um, and the number of meshes constituting the mesh body region is 100-800.

In the above technical solution, the dimension range of the wire diameter r1 of the bridge line and the wire diameter r2 of the mesh wire constituting the mesh body region is 15 um ≦ r1 ≦ r2 ≦ 40 um, and the number of meshes constituting the mesh body region is 200-400.

  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”. This is advantageous for collecting and transmitting current by the solar cell, so that 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 structure . 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 bridge line 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 bridge line 51 is a group of parallel bridging portions at equal intervals, and preferably, the neck part and the tail part of the bridge line 51 are connected to the apex of a regular hexagon.

The dimensions of the wire diameter r1 of the bridge line 51 and the wire diameter r2 of the mesh line 52 constituting the regular hexagonal region are r1 = 13 and r2 = 80, and the number of meshes constituting the regular hexagonal region is 200 .

  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 bridge line 51 and the wire diameter r2 of the mesh line 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 a combination of number number of lines diameter and the mesh is controllable mechanical strength reasonable porosity and mesh, thereby, standard requirements are met differ 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. . Although the body structure is similar to Example 1, as shown in the structural diagram of the honeycomb mesh of Figure 6, the connection position between the bridge wire and a positive hexagon, or adjacent requiring connection 2 The two hexagonal regions differ in the opposite positions.

  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 of the mesh line is larger than the wire diameter of the central region, and the fixing edge hole structure is continuous with the edge of the regular hexagon.

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. . Although the body structure is similar to Example 1, as shown in the structural diagram of the honeycomb mesh 7, the connecting position between the bridge wire and a positive hexagon, or adjacent requiring connection 2 The two hexagonal regions differ in the opposite positions.

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 diagram showing the structure of the honeycomb mesh, and the main body structure is substantially the same as that of the first embodiment, but the bridge lines constituting the non-hexagonal area and the main body of the regular hexagon area 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 diagram showing the structure of the honeycomb mesh, and the main body structure is almost the same as that of the first embodiment, but the bridge lines 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 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 pressed forms a long opening with a bridge . . 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 pressed forms a long opening with a bridge . . 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 pressed forms a long opening with a bridge . . 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 material in the mask is reduced, and the mesh line at the opening is limited to one direction, so the number of bridges 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 number of the honeycomb wire mesh is 330 , the mesh cloth wire diameter is 20 μm, and the thickness of the mesh cloth is 25 μm.

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A honeycomb wire mesh, the basic structure is the same as in Example 1, except that the number of mesh cloths is changed to 400 , the diameter of the mesh cloth is changed to 25 um, and the thickness of the mesh cloth is changed to 20 um. Yes.

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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 Bridge 52 Regular hexagon area mesh line R1 Width dimension of non-regular hexagon area R2 Openwork Long opening dimensions

Claims (7)

A mesh body region configured to form a first mesh structure in which regular hexagons are arranged in a honeycomb shape;
A pattern region configured to form a second mesh structure between a first portion of the mesh body region and a second portion of the mesh body region;
Each of the meshes constituting the second mesh structure has six sides,
Sharing two of the six sides with a regular hexagon arranged in a first portion of the mesh body region;
Sharing the other two sides of the six sides with a regular hexagon arranged in the second part of the mesh body region;
The last two sides of the six sides each form a bridge connecting the regular hexagonal vertex arranged in the first part and the regular hexagonal vertex arranged in the second part. Characteristic honeycomb wire mesh Of the six sides of the mesh constituting the second mesh structure, two sides are respectively shared with two regular hexagons arranged in the first part of the mesh body region, and the other two sides are shared with the mesh. The honeycomb wire mesh according to claim 1, wherein the honeycomb mesh is shared with one regular hexagon arranged in the second portion of the main body region . Of the six sides of the mesh constituting the second mesh structure, two sides are respectively shared with two regular hexagons arranged in the first part of the mesh body region, and the other two sides are The honeycomb wire mesh according to claim 1 , wherein the honeycomb mesh is shared with each of two regular hexagons arranged in the second portion of the mesh body region . Of the six sides of the mesh constituting the second mesh structure, two sides are shared with one regular hexagon arranged in the first part of the mesh body region, and the other two sides are shared with the mesh body region. The honeycomb wire mesh according to claim 1 , wherein the honeycomb mesh is shared with one regular hexagon arranged in the second portion . The wire diameter of the bridge line is equal to or less than the wire diameter of the mesh line in the mesh body region, and the wire diameter of the bridge line is uniform or both ends are thick and the center is thin . Honeycomb wire mesh. The size range of the wire diameter r1 of the bridge wire and the wire diameter r2 of the mesh wire constituting the mesh body region is 10 um ≦ r1 ≦ r2 ≦ 80 um, and the number of meshes constituting the mesh body region is 100 to 100 μm. The honeycomb wire mesh according to claim 1 , wherein the honeycomb mesh is 800. The size range of the wire diameter r1 of the bridge wire and the wire diameter r2 of the mesh wire constituting the mesh body region is 15 um ≦ r1 ≦ r2 ≦ 40 um, and the number of meshes constituting the mesh body region is 200 to 200 μm. The honeycomb wire mesh according to claim 1 , wherein the honeycomb mesh is 400.

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