KR101987173B1

KR101987173B1 - Honeycomb-shaped metal wire mesh

Info

Publication number: KR101987173B1
Application number: KR1020147031427A
Authority: KR
Inventors: 쯔링 웨이; 샤오핑 가오; 웨이핑 쟝
Original assignee: 쿤 샨 파워 스텐실 컴퍼니 리미티드
Priority date: 2012-04-10
Filing date: 2013-04-07
Publication date: 2019-06-10
Also published as: KR20150020168A; JP6050889B2; TWI572493B; TWM462881U; CN103358671B; CN103358671A; JP2015514029A; WO2013152693A1; TW201341204A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb metal screen, and aims at solving the problem that the screen structure used in the conventional precision printing technique is not stable and the mechanical strength of the screen is low. In the present invention, Wherein the screen is a honeycomb structure in which polygonal arrays are interconnected, wherein the polygonal arrays are interconnected to form a specific pattern; Among them, one of the preferable methods is that the polygon forming the honeycomb structure of the screen is regular hexagon; The above-mentioned hexagonal arrays are interconnected through non-regular hexagons. The technique of connecting the angle points of regular hexagons as bridges on the sides of the non-regular hexagons can solve the above problem relatively well and can be used in the production of precision printing industry.

Description

Honeycomb-shaped metal wire mesh < RTI ID = 0.0 >

The present invention relates to a honeycomb metal screen.

As the rapid development of the economy and the consumption of energy are becoming ever more widespread, the storage of non-renewable resources such as coal and oil is decreasing day by day, which means that new energy (for example, nuclear energy, solar energy, wind energy, Geothermal energy, marine energy, and hydrogen energy). Among them, as a source of much energy on Earth, solar energy is an important place in the study of new energy, and solar energy cells are the most representative products of solar energy applications.

Improving the conversion rate of the solar cell is a major goal of solar cell research at present, and it is possible to improve the conversion rate of the cell by selecting a suitable printing screen in addition to improving the selection of the substrate material and the substrate production process.

Due to the development of the electronics industry and related industries, the application of precision printing and miniaturization packaging has been widening day by day. Precision printing and miniaturization packaging processes are generally associated with the use of masks, A composite mask is included. At present, the material of the metallic mask is generally a nickel-based alloy; A relatively complex bar of a composite mask, which includes a screen and a photosensitive material applied to the screen surface.

Chinese patent CN101241956 discloses a method for manufacturing a large-area nanofilm solar cell, in which a monolithic DSSC is processed into a strip shape and a stiff-lip monolithic DSSC is formed into a large-area solar cell Resistance net-type electrode manufactured by screen printing method on both sides of the inner connection strip, and a protective film is coated on the surface of the low-resistance network electrode, and then a low-resistance network electrode coated with a protective film A plurality of strip-shaped monolithic DSSCs are connected in parallel to a large-area solar cell, and one injection groove is provided on the contact surface with the TCO of one glass of the large-area solar cell, After the electrolyte and fuel are pumped through the grooves, the injection grooves are removed and sealed.

Chinese patent CN102336051A discloses a solar energy cell screen printing apparatus, which includes a printing scraper, an auxiliary scraper, a return scraper, a printing screen, two baffle structures on both sides of the edge adjacent to the printing scraper on the printing screen, , The baffle structure mainly consists of a baffle surface, a baffle frame and a mounting frame; The bottom of the baffle surface and the screen surface are in contact either separately or through a flexible material; The marginal and baffle sides of the return scraper, print scraper and auxiliary scraper are in tight contact; The printer head drives the scraper and return scraper to slide in contact with the baffle surface so that the slurry is allowed to move only within the range defined by both baffle sides, scraper and return scraper so that the slurry does not flow to both sides.

The Chinese patent CN202058761U discloses a screen printing crystalline silicon solar cell solid silver screen, which includes a silicon flake, a main gate line, a chamfer, and an auxiliary gate line, wherein the silicon flake is provided with a main gate line and an auxiliary gate line, The main gate line and the auxiliary gate line are vertically installed and the chamfer is provided on the silicon flake to effectively extend the front electrode gate line on the surface of the silicon flake so that the cover area is increased to effectively collect the photocurrent, .

Chinese patent CN101969082A discloses a solar cell manufacturing process combining a secondary screen printing and a groove, which is used for manufacturing a solar energy cell of a secondary printing electrode, and includes a groove process and a secondary printing process, Forming an etch groove in the electrode gate line region by grooving in the electrode gate line region of the silicon flake surface; The secondary printing process comprises: a. Electrode primary printing: Filling a printing electrode slurry into an etch groove and drying to form a first layer electrode in the etch groove; b. Electrode secondary printing: An electrode is printed on the outer surface of the first layer electrode to form a second layer electrode in the silicon foil surface electrode gate line region.

The screen constituting a conventional composite mask is a knitted metal screen or a polyester screen and this type of screen results in an uneven application of the slurry in the final molded mask due to the nature of the knotted meridian and hypotenuse nodes ; In the process of manufacturing the actual mask, generally, first, the screen is pressed to minimize the above phenomenon of the knitted type screen. However, even through these operations, the bad effects caused by the meridian and hypothesis nodes can not be completely avoided.

The present invention mainly provides a screen to solve this problem, so that the problem is solved comparatively well.

The present invention solves the problem that the screen structure used in the conventional precision printing technique is not stable, the mechanical strength of the screen is low, and a new honeycomb metal screen is provided, so that the structure is stable and the mechanical strength is relatively high .

The technical solution of the present invention for achieving the above object is as follows. That is, the screen is a honeycomb structure in which polygonal arrays are interconnected, and the polygon forming the screen honeycomb structure is regular hexagonal.

In the above technical solution, a preferred chamber layout is provided with a non-regular hexagonal array zone thereon, the non-square array-like zones forming a specific pattern on the regular hexagonal array, and the regular hexagonal arrays being interconnected through an unequal hexagon Connect the angle points of the hexagon by bridging the sides of the bar and non-hexagon.

In the above technical solution, as a preferable technical solution, the range of the line diameter r1 of the bridging and the line diameter r2 of the screen line constituting the regular hexagon area is 10um r1 r2 80um; The mesh size of the hexagonal area is 100 to 800 mesh. The range of the line diameter r1 of the bridging 51 and the line diameter r2 of the screen line 52 constituting the hexagonal area is 15um r1 r2 40um; The number of meshes forming the hexagonal area is 200 to 400 mesh.

Wherein a line diameter of the grid line forming the honeycomb metal screen pattern area is uniform; The honeycomb metal screen wire is continuous knitting type. On the honeycomb metallic screen, the line diameter of the screen line of the pattern area is not greater than the line width of the screen line of the non-pattern area; On the honeycomb metallic screen, the line width of the remaining screen lines of the pattern area is uniform, or both ends are coarse and thin in the middle. Wherein the structure of the honeycomb metal screen is an integrally formed, smoothly curved meridian and hypotenuse node; The honeycomb metal screen is manufactured through electroplating, and its material is a pure nickel material or a nickel-based alloy material.

In the above technical solution, a preferable technical means is that the line diameter of the grid line constituting the pattern section of the honeycomb metal screen is uniform; The periphery of the non-grid region is provided with a stress buffer band and a hole band connected to the buffer band; The screen line of the honeycomb metal screen is continuous knitting. The mesh number of the honeycomb metal screen is 200 to 450 mesh, the wire diameter is 15 to 30 um, and the thickness is 15 to 30 um; On the honeycomb metal screen, the line diameter of the remaining screen lines of the pattern area is not greater than the line diameter of the screen lines of the non-pattern area; On the honeycomb metallic screen, the line width of the remaining screen lines of the pattern area is uniform, or both ends are coarse and thin in the middle. According to a preferred technology, the structure of the honeycomb metal screen is a non-knitted type meridian and a hypotenuse node which are integrally formed and have a smooth surface. The honeycomb metal screen is manufactured through electroplating, and its material is a pure nickel material or a nickel-based alloy material.

The present invention also provides a mask fabricated using the honeycomb metal screen, wherein the opening size of the pattern area of the mask is not greater than the size of the screen line defective area corresponding to the pattern on the honeycomb metal screen.

In the above technical solution, as a preferable technique, the pattern formed by the broken grid lines in the honeycomb metal screen is a group of mutually parallel stripes, which corresponds to a fine grid line of the mask.

The honeycomb metal screen provided in the present invention has the following advantages: 1. The honeycomb metal screen is manufactured through the electroplating process, and its surface is smooth, And a solar cell electrode print screen manufactured using the same, the slurry is uniformly applied at the time of printing; 2. Because the honeycomb metal screen has no grid line in the direction in which the thin grid line is located in the area corresponding to the fine grid line of the corresponding solar cell electrode print screen, .

The non-woven metal screen has a smooth surface of the screen, and the mask manufactured using the non-woven metal screen does not cause damage to the mask due to rugged surfaces during the cleaning and wiping process. The screen can be designed with different pitches, screen line diameters and screen line shapes according to demand, so that the screen has a comparatively good slurry coating effect and can secure the life of the screen.

Due to the above advantages, the solar cell electrode print screen manufactured using the honeycomb metal screen can print a silicon gate electrode line structure having a relatively high "height-width ratio" And therefore, the conversion rate of the solar cell is correspondingly improved.

Are included in the scope of the present invention.

1 is an overall structural view of a honeycomb metal screen;
2 is a partially enlarged view of the metal screen of Fig.
3 is an overall structural view of a screen having a special grid structure;
4 is a partially enlarged view of a screen having a predetermined pattern.
5 is a partially enlarged view of Fig.
6 is a structural view of a honeycomb screen.
7 is a structural view of a honeycomb screen.
8 is a structural view of a honeycomb screen.
9 is a structural view of a honeycomb screen.
10 is a view after applying one layer of the photosensitive polymer to the surface of the screen.
1, I is a grid zone, II is a non-grid zone;
In Figure 3, the III pattern is a sub-region of a predetermined screen and 31 is reduced;
In Figure 4, 41 is a non-regular hexagonal zone and 42 is a pattern portion zone;
In Fig. 5, 41 is a non-regular hexagonal area, 51 is a bridging, 52 is a screen line of a hexagonal area;
In Fig. 7, R1 is the width of the non-regular hexagon zone;
In Fig. 10, R1 is the width of the non-hexagonal section and R2 is the opening size of the pierced long line.
Hereinafter, the present invention will be described in more detail with reference to specific examples.

Example 1

As shown in Fig. 1, in the honeycomb structured metal screen, the screen is a honeycomb structure formed of a polygonal array. Fig. 1 is an overall structural view of the screen. Fig. 2 is an enlarged view of an I part (i.e., a part of a screen body) in Fig. 1, wherein the polygon forming the honeycomb structure of the screen is regular hexagonal, Stable and high mechanical strength of the screen.

Fig. 3 is an overall structural view of another screen with a special grid structure on the base of the screen, wherein the special grid structure constitutes a pattern on the screen body, and as shown in Fig. 3, Group, and the pattern consists of a line 31 array.

Fig. 4 is a partially enlarged view of the screen having the predetermined pattern, which corresponds to the portion III in Fig. 3, and the non-regular hexagonal zone 41 in Fig. 3 corresponds to the line 31 in Fig. The non-square zone 41 comprises at least one group of other types of pattern arrays. As shown in Fig. 5, the non-regular hexagonal zone 41 is arranged in a certain rule, and a group of adjacent two regular hexagonal zones are connected to each other And a boundary line of some regular hexagon. Further, as shown in Fig. 5, the bridging 51 is a group of bridges parallel to the equally spaced, preferably, the beginning and the end of the bridging 51 are connected to a regular hexagon angle point.

R1 = 13 and r2 = 80 are the ranges of the line diameter r1 of the bridging 51 and the line diameter r2 of the screen line 52 constituting the hexagonal area; The number of meshes forming the hexagonal area is 200 to 400 mesh.

Example 2

A honeycomb metal screen, comprising: a honeycomb structure in which polygonal arrays are interconnected, wherein the polygon forming the honeycomb structure of the screen is regular hexagonal. Its structure is the same as that of the first embodiment.

R1 = 15 and r2 = 40 are the ranges of the line diameter r1 of the bridging 51 and the line diameter r2 of the screen line 52 constituting the hexagonal area; The mesh size of the hexagonal area is 400 to 400 mesh. By controlling the combination of line diameter and screen mesh quantity, it is possible to control the reasonable aperture ratio and the mechanical strength of the screen to satisfy different specification requirements for the next stage application.

Example 3

A honeycomb metal screen, comprising: a honeycomb structure in which polygonal arrays are interconnected, wherein the polygon forming the honeycomb structure of the screen is regular hexagonal. As shown in FIG. 6, this is a structural view of the honeycomb screen. In the case of a difference, the connecting position of the bridging and the hexagon is floating or connected to two adjoining regular hexagonal sections The relative positions of the two are different.

The honeycomb screen is a flat metal plate made by electroforming, the material of which is a nickel-based alloy material; The line diameter of the screen line of the hexagonal area of the rim of the screen is larger than the line diameter of the intermediate area and the side hole is provided adjacent to the edge of the hexagonal shape for fixing.

Example 4

A honeycomb metal screen, comprising: a honeycomb structure in which polygonal arrays are interconnected, wherein the polygon forming the honeycomb structure of the screen is regular hexagonal. As shown in FIG. 7, this is a structural view of the honeycomb screen, in which the connecting position of the bridging and the hexagon is floating or connected to two adjoining regular hexagonal sections The relative positions of the two are different.

Example 5

A honeycomb metal screen, comprising: a honeycomb structure in which polygonal arrays are interconnected, wherein the polygon forming the honeycomb structure of the screen is regular hexagonal. FIG. 8 is a structural view of the honeycomb screen. The structure of the body is basically the same as that of the first embodiment, and the difference is that the bridging forming the non-regular hexagonal area is not perpendicular to the square hexagonal body.

The honeycomb screen is a flat metal plate made by electroforming, and its material is a nickel metal material. The line diameter of the screen line of the hexagonal area of the rim of the screen is larger than the line diameter of the intermediate area and the side hole is provided adjacent to the edge of the hexagonal shape for fixing.

Example 6

A honeycomb metal screen, comprising: a honeycomb structure in which polygonal arrays are interconnected, wherein the polygon forming the honeycomb structure of the screen is regular hexagonal. FIG. 9 is a structural view of the honeycomb screen. The structure of the body is basically the same as that of the first embodiment, and the difference is that the bridging forming the non-regular hexagonal area is not perpendicular to the regular hexagonal body.

Example 7

In a honeycomb type metal screen, its structure corresponds basically to Embodiment 4, and as shown in Fig. 10, it is a drawing after applying one layer of the photosensitive polymer to the screen surface or pressing it. This corresponds to the zone structure shown in Fig. 7, that is, the structure shown in Fig. 10 is obtained by applying or pressing one layer of the photosensitive polymer on the basis of the structure shown in Fig. 7, And in regions where the photosensitive polymer is not applied or pressed, long elongated openings with bridges are formed. In the relationship shown in Fig. 10, the opening size R2 < The widths of the non-hexagonal zones R1, R2 = 20 um, and R1 = 300 um.

Example 8

For a honeycombed metal screen, its structure is fundamentally consistent with Example 5, which is a view after application of one layer of the photosensitive polymer to the screen surface. This corresponds to the zone structure shown in Fig. 8, that is, the structure shown in Fig. 8 is obtained by pressing one layer of the photosensitive polymer on the basis of the structure shown in Fig. 7, In the region where the photosensitive polymer is not pressed and is distributed in the non-regular hexagonal area, a long strip-like opening with a bridging is formed. In the relationship shown in Fig. 10, Width R1, R2 = 30um, R1 = 150um.

Example 9

In a honeycomb metal screen, its structure corresponds basically to Example 6, which is a drawing after applying one layer of the photosensitive polymer to the screen surface or pressing it. This corresponds to the zone structure shown in Fig. 9, that is, the structure shown in Fig. 9 is the one on which the photosensitive polymer is applied or pressed on the basis of the structure shown in Fig. 7, And in the regions where the photosensitive polymer is not pressed, are formed long elongated openings with bridges, and in the illustrated relationship, the apertures of the non-regular hexagonal zones The width R1 is R2 = 30um, R1 = 150um.

Example 10

A grid zone, and a non-grid zone, wherein the grid zone and the non-grid zone are interconnected, the non-grid zone is provided in the periphery of the grid zone, and the grid zone comprises two groups of mutually perpendicular grid lines A pattern zone is provided in the middle region of the grid zone of the honeycomb metal screen and the pattern is due to a lack of the screen line in the transverse or longitudinal direction of the honeycomb metal screen; The honeycomb metal screen is a non-knitted long line and a hypotenuse node, the structure of which is integrally formed and the surface is smooth, that is, the screen line constituting the honeycomb metal screen is continuous knitting.

Fig. 2 is a partially enlarged view of the metal screen, which is made up of a screen line Ia interposed therebetween, the mesh quantity of the honeycomb metal screen in this embodiment is 300 mesh, the line diameter of the screen fabric is 20 um, The thickness of the fabric is 25um.

FIG. 3 is a partial enlarged view of a stress buffer band of the honeycomb metal screen. The line diameter of the buffer band changes according to a constant change rule. The rule in this embodiment is a honeycomb metal screen, R1 < r2 < r3, for example, r1 = 20um, r2 = 30um, r3 = 40um as the line diameter gradually increases from the middle of the screen to the rim. As shown in Fig. 1, the external periphery having a line diameter of 40 [mu] m is connected to the site hall area of the screen fabric. This design allows the screen fabric to be pulled tightly so that it can more smoothly receive the external pulling force when subjected to force.

Example 11

The basic structure of the honeycomb structured metal screen is the same as in Example 1. In the changed portion, the mesh amount of the screen fabric is 400 mesh, the line diameter of the screen fabric is 25 um, and the thickness of the screen fabric is 20 um.

On this basis, the honeycombed metal screen also has the following structural changes.

The honeycomb metal screen is provided with a pattern, and the facets of this embodiment are a group of mutually parallel lines 4a, as shown in FIG. 5 is an enlarged view of a portion III in Fig. 4, wherein 5a in Fig. 5 is the line 4a shown in Fig. 4, and the grid line in the lateral direction is missing in the portion 5a.

Fig. 6 is an enlarged view of a portion IV in Fig. 5, in which the line width of the remaining screen lines of the pattern area where the grid lines are broken has the following rules, i.e., the diameter of the honeycomb metal screen body r1 & r4> is the line diameter r5 of the middle area of the screen line inside the pattern area; The line diameter of the remaining screen lines of the pattern area where the grid lines are missing may also have the following rules, that is, as shown in Fig. 7, the line diameters of the screen lines inside the pattern area are uniform, Line diameter r1≥ is the line diameter r6 of the screen line inside the pattern area.

Fig. 8 is a view of a mask portion (corresponding to the portion shown in Fig. 5) after one layer of mask material is applied on the honeycomb metallic screen of the present invention. As shown in Fig. 8, There is a screen line 8a of the honeycomb-shaped metal screen line defects and serves as bridging. In FIG. 8, the opening size R1 of the honeycomb-shaped metal screen line defective area is larger than the opening size of the mask pattern corresponding area. This design lowers the coating difficulty coefficient of the mask material in the mask and also the screen line at the open position is directed in only one direction and relatively less bridging reduces the impact on the printing slurry and reduces the slurry application effect of the mask .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments. Those skilled in the art, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

A honeycomb metal screen, comprising: a honeycomb structure in which polygonal arrays are interconnected, wherein the polygons that make up the honeycomb structure of the screen are regular hexagonal and have a non-regular hexagonal array zone, And the regular hexagon arrays are connected to each other through the non-regular hexagon, and the sides of the non-regular hexagon are bridged to connect the angle points of the regular hexagon.

The method according to claim 1,
The range of the line diameter r1 of the bridging and the line diameter r2 of the screen line constituting the hexagonal area is 10um? R1? R2? 80um; Wherein a mesh size of the hexagonal area is 100 to 800 meshes.

The method according to claim 1,
The range of the line diameter r1 of the bridging and the line diameter r2 of the screen line constituting the regular hexagon area is 15um? R1? R2? 40um; Wherein a mesh size of the hexagonal area is 200 to 400 mesh.

The method according to claim 1,
The line diameters of the grid lines forming the pattern zones of the honeycomb metal screen are uniform; Characterized in that the screen line of the honeycomb metal screen is of continuous knitting type.

The method according to claim 1,
On the honeycomb metallic screen, the line diameter of the screen line of the pattern area is not greater than the line width of the screen line of the non-pattern area; Characterized in that on the honeycomb metal screen, the line width of the remaining screen lines of the pattern zone is uniform, or both ends are coarse and the middle is thin.

The method according to claim 1,
Characterized in that the structure of the honeycomb metal screen is integrally formed and the surface is smooth and non-knit prismatic and hypotenuse nodes.

The method according to claim 6,
Wherein the honeycomb metal screen is manufactured through a preforming process, and the material thereof is a pure nickel material or a nickel-based alloy material.

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