CN219115014U - Knotless composite metal screen plate - Google Patents
Knotless composite metal screen plate Download PDFInfo
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- CN219115014U CN219115014U CN202223081493.5U CN202223081493U CN219115014U CN 219115014 U CN219115014 U CN 219115014U CN 202223081493 U CN202223081493 U CN 202223081493U CN 219115014 U CN219115014 U CN 219115014U
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Abstract
The application discloses no knot composite metal half tone, its characterized in that includes: the strip-shaped hollowed-out parts are arranged in parallel; the auxiliary grid line structure comprises a plurality of auxiliary grid lines which are arranged in parallel, and the auxiliary grid lines are arranged between the strip-shaped hollowed-out parts and divide the strip-shaped hollowed-out parts into a plurality of perforations. The auxiliary grid line structure divides the hollowed-out parts between the second grid line structures into a plurality of through holes, and the conductive paste passes through the hollowed-out parts through the through holes, so that the electrode has better conductivity and better conversion rate.
Description
PRIORITY INFORMATION
The present application requests the priority and benefit of a patent application filed at 2022, 11.04, to the chinese national intellectual property agency, patent application number 202211372884.4, entitled "knotless composite screen printing plate", and is incorporated herein by reference in its entirety.
Technical Field
The application relates to the technical field of knotless screens, in particular to a knotless composite metal screen.
Background
The screen is an important tool for printing electrodes of the solar cell, slurry is poured onto the screen, a scraper is used for driving the slurry to move on the screen, the slurry is extruded onto the solar cell through meshes on the screen, and corresponding patterns are formed on the solar cell so as to form the electrodes of the solar cell.
In the prior art, for example, the patent number is CN202221496298.6, and the patent name is a solar PI film hot-pressing screen, and this patent discloses a solar PI film hot-pressing screen, including the screen frame and locate the gauze in the screen frame, the gauze is last to be covered with one deck PI film, the lower surface of PI film be provided with the thermosetting glue that the gauze is connected, the upper surface of screen frame seted up with the hot-pressing constant head tank that the screen frame inner wall is connected.
The screen plate adopted in the prior art has knots formed by intersecting warps and wefts, so that knots exist in the electrode prepared finally, and the conductivity or conversion efficiency of the electrode film prepared is affected; in addition, the PI film and the gauze are used for the screen in the prior art, so that the performance of the screen is not stable enough, the use times are less, and the cost for preparing the electrode film is higher; therefore, there is a need to provide a new structure of screen printing plate to solve the technical problems in the prior art.
Disclosure of Invention
Based on this, it is necessary to provide a knotless composite metal screen plate to solve the above technical problems.
The technical scheme of the application is as follows:
a knotless composite metal screen printing plate comprising: the strip-shaped hollowed-out parts are arranged in parallel; the auxiliary grid line structure comprises a plurality of auxiliary grid lines which are arranged in parallel, and the auxiliary grid lines are arranged between the strip-shaped hollowed-out parts and divide the strip-shaped hollowed-out parts into a plurality of perforations.
In one embodiment, the width of the through hole in the extending direction of the strip-shaped hollowed-out portion is larger than the width of the auxiliary grid line, and the width of the through hole is not smaller than 20 micrometers.
In one embodiment, the bar-shaped hollow portion includes a first bar-shaped hollow portion and a second bar-shaped hollow portion, and the auxiliary gate line is disposed in the second bar-shaped hollow portion.
In one embodiment, the semiconductor device further comprises a first grid line structure and a second grid line structure, wherein the first grid line structure comprises a plurality of first grid lines, the first strip-shaped hollowed-out parts are formed between the adjacent first grid lines, the second grid line structure comprises a plurality of second grid lines, and the second strip-shaped hollowed-out parts are formed between the adjacent second grid lines.
In one embodiment, the first bar-shaped hollow portion is an integral hollow.
In one embodiment, the auxiliary gate line and the second gate line are of an integral structure, and the second gate line and the auxiliary gate line are located on the same plane.
In one embodiment, the width of the auxiliary gate line is smaller than the width of the first bar-shaped hollowed-out portion, and the width of the auxiliary gate line is not larger than 20 micrometers.
In one embodiment, the second gate line structure is made of metal, and the auxiliary gate line structure is made of the same material as the second gate line structure.
In one embodiment, the width of the first strip-shaped hollowed-out portion is not greater than 30 micrometers, and the width of the second strip-shaped hollowed-out portion is not greater than 200 micrometers.
In one embodiment, the first bar-shaped hollow portion and the second bar-shaped hollow portion are communicated with each other.
The beneficial effects of this application: the application provides a composite metal screen plate, through first grid line structure with second grid line structure stack sets up, and erect auxiliary grid line structure between the second grid line structure, first grid line structure with be equipped with fretwork portion between the second grid line structure, the fretwork portion between the auxiliary grid line structure with the second grid line structure cuts apart into a plurality of perforation, and conductive paste is passing fretwork portion through the perforation like this, and the electrode that conductive paste formed just so does not have the structure, and such electrode conductivity is better and the conversion rate can be better.
Drawings
FIG. 1 is a schematic plan view of a knotless composite screen printing plate according to the present application;
FIG. 2 is a schematic cross-sectional view of a knotless composite screen printing plate in the A-A' direction;
FIG. 3 is a schematic view of another cross-sectional structure of a knotless composite screen printing plate of the present application in the A-A' direction;
FIG. 4 is a schematic cross-sectional view of a knotless composite screen printing plate in the B-B' direction;
FIG. 5 is a schematic diagram of a structure of a knotless composite screen printing plate according to the present application;
fig. 6 is a schematic structural diagram of a knotless composite screen printing plate according to the present application.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
A knotless composite screen printing plate, which can form more uniform electrodes when preparing solar cell films, the knotless composite screen printing plate comprising:
the first grid line structure comprises a plurality of first grid lines which are arranged at intervals, and a first strip-shaped hollowed-out part is arranged between every two adjacent first grid lines; the first grid line is made of metal, such as Ni, ge and other metals; the hollowed-out parts between the first grid lines are strip-shaped, the first strip-shaped hollowed-out parts are arranged in parallel, and the printed paste can leak out of the first strip-shaped hollowed-out parts and is formed on the surface of a substrate or a film to be printed;
the second grid line structure comprises a plurality of second grid lines which are arranged at intervals, the second grid lines are arranged on the surface of the first grid line, and second strip-shaped hollowed-out parts are arranged between the adjacent second grid lines; the first strip-shaped hollowed-out part and the second strip-shaped hollowed-out part are correspondingly arranged; the first strip-shaped hollowed-out part and the second strip-shaped hollowed-out part are communicated with each other or overlapped; the second grid line is made of metal, such as Ni, ge and other materials;
the auxiliary grid line structure comprises a plurality of auxiliary grid lines arranged at intervals, the auxiliary grid lines are arranged between the second grid lines in a lap mode, the auxiliary grid lines and the second grid lines are of an integrated structure, the auxiliary grid lines are approximately perpendicular to the second grid lines or perpendicular to the second grid lines, the second strip-shaped hollowed-out portions are divided by the auxiliary grid lines, and in one embodiment, the second grid lines and the auxiliary grid lines are located on the same plane and are arranged in parallel. In one embodiment, the auxiliary gate line divides the second bar-shaped hollow portion into a plurality of through holes arranged at intervals, and the through holes are communicated with the first bar-shaped hollow portion. In one embodiment, the width of the through hole in the extending direction of the second grid line is larger than the width of the auxiliary grid line, and the width of the through hole is not smaller than 20 micrometers, so that the printing paste can be formed on the surface of the substrate or the film to be printed through the through hole passing through the first strip-shaped hollowed-out part.
In one embodiment, the width of the auxiliary grid line is smaller than the width of the first strip-shaped hollowed-out part, and the width of the auxiliary grid line is not larger than 20 micrometers, so that the distance of the slurry falling from the two through holes in the printing process is ensured to be controllable, and a complete electrode circuit can be well formed. In one embodiment, the auxiliary gate line and the second gate line are made of the same material; or the first grid line and the second grid line are made of different materials; for example, the material of the auxiliary gate line may be a material such as Ni, ge, or other materials with a certain hardness.
In one embodiment, the width of the first gate line is greater than the width of the second gate line, and the width of the second bar-shaped hollowed-out portion is greater than the width of the first bar-shaped hollowed-out portion. In one embodiment, the width of the second strip-shaped hollowed-out part is not more than 200 micrometers, and the width of the first strip-shaped hollowed-out part is not more than 30 micrometers; the second strip-shaped hollowed-out parts are equivalent to be overlapped above the first strip-shaped hollowed-out parts and are mutually communicated; for example, the width of the first strip-shaped hollowed-out part is 15 micrometers, or the width of the first strip-shaped hollowed-out part is 10 micrometers, and the width of the second strip-shaped hollowed-out part is 100 micrometers, or the width of the second strip-shaped hollowed-out part is 50 micrometers, or the width of the second strip-shaped hollowed-out part is 30 micrometers.
In one embodiment, the adjacent first gate lines are arranged in parallel, and the adjacent second gate lines are arranged in parallel; thus, the first grid lines are arranged in parallel, the printed electrode resistance is ensured to be more uniform, and if the widths of the first strip-shaped hollowed-out parts are equal, the prepared electrodes are approximately equal in resistance. In one embodiment, the thickness of the first gate line is not greater than 10 micrometers; or the thickness of the first grid line is equal to the width of the first strip-shaped hollowed-out part. In one embodiment, the thickness of the second gate line is equal to the thickness of the first gate line; or the thickness of the second grid line is smaller than that of the first grid line; or the thickness of the second grid line is larger than that of the first grid line. The thicknesses of the first and second grid structures cannot be too thick, because if the thicknesses of the first and second grid structures are too thick, the falling height of the paste will be relatively high in the process of printing the paste, which is unfavorable for the formation of the prepared electrode and affects the electrical performance of the electrode.
In one embodiment, the semiconductor device further comprises a third grid line structure, the third grid line structure is located between the first grid line structure and the second grid line structure, the third grid line structure comprises a plurality of third grid lines arranged at intervals, a third hollowed-out portion is formed between every two adjacent third grid lines, and the third hollowed-out portion is communicated with the first strip-shaped hollowed-out portion. The third grid line structure can be an adhesive layer, can be the same as the material of the first grid line structure, and can be the same as the material of the second grid line structure; of course, the third gate line structure may also be a multi-layer structure, for example, the third gate line structure is a two-layer Ni layer, and of course, the third gate line structure may also be a single-layer structure, for example, the third gate line structure may also be an adhesive layer, so that the connection between the first gate line structure and the second gate line structure is firmer.
In one embodiment, the first gate line structure is formed of one material selected from PI, PET, PMMA, nickel, nichrome, nickel tungsten alloy and nickel molybdenum alloy, that is, the first gate line structure may be flexible or plastic with certain elasticity; but also from metals or alloys, which are only a general list and are not possible to be exhaustive; the second gate line structure is preferably made of a metal material, and the first gate line structure and the second gate line structure may be formed by bonding, preferably by directly growing the second gate line structure on the surface of the first gate line structure, and the growth may be formed by electroplating, electroless plating, vapor deposition, or the like.
Referring to fig. 1 and 2, a composite screen or a knotless composite screen includes a first grid line structure, a second grid line structure, an auxiliary grid line 30 and a bar-shaped hollow portion 40; referring to fig. 1 and 2, the bar-shaped hollow portion 40 includes a first bar-shaped hollow portion and a second bar-shaped hollow portion; the first grid line structure comprises a plurality of first grid lines 10, wherein the first grid lines 10 are arranged at intervals, and first strip-shaped hollowed-out parts are formed between adjacent first grid lines 10; the second grid line structure comprises a plurality of second grid lines 20, the second grid lines 20 are arranged on the surface of the first grid line 10, and second strip-shaped hollowed-out parts are formed between adjacent second grid lines 20; the first strip-shaped hollowed-out parts and the second strip-shaped hollowed-out parts are overlapped, that is to say, the first strip-shaped hollowed-out parts and the second strip-shaped hollowed-out parts are communicated.
Referring to fig. 6 and 2, the width of the interval between the adjacent first gate lines 10 is Wb, the width of the interval between the adjacent second gate lines 20 is Wa, or the width of the second bar-shaped hollow portion is Wb, wherein Wa is greater than Wb, the value of Wa is not greater than 200 micrometers, for example, wa is 20 micrometers, 40 micrometers, 60 micrometers, 120 micrometers, the value of Wb is not greater than 30 micrometers, for example, wb is 10 micrometers, 14 micrometers, 16 micrometers, 25 micrometers; the thickness of the first gate line 10 is Hb, the thickness of the second gate line 20 is Ha, the value of Hb is not more than 10 micrometers, for example, the value of Hb is 3 micrometers, 5 micrometers, 8 micrometers, the value of Ha is not more than 30 micrometers, for example, the value of Ha is 13 micrometers, 15 micrometers, 20 micrometers, 24 micrometers.
Referring to fig. 3, a composite screen includes a first gate line structure, a second gate line structure, a third gate line structure, and a bar-shaped hollow portion 40; the strip-shaped hollowed-out part 40 comprises a first strip-shaped hollowed-out part, a second strip-shaped hollowed-out part and a third strip-shaped hollowed-out part; the first grid line structure comprises a plurality of first grid lines 10, wherein the first grid lines 10 are arranged at intervals, and first strip-shaped hollowed-out parts are formed between adjacent first grid lines 10; the second grid line structure comprises a plurality of second grid lines 20, the second grid lines 20 are arranged on the surface of the first grid line 10, and second strip-shaped hollowed-out parts are formed between adjacent second grid lines 20; the third gate line structure is located between the first gate line structure and the second gate line structure, the third gate line structure includes a plurality of third gate lines 50, the third gate lines 50 are located between the first gate line 10 and the second gate line 20, and the width of the third gate lines 50 may be equal to the width of the second gate line 20, or may be greater than the width of the second gate line 20, but not greater than the width of the first gate line 10.
In one embodiment, a plurality of gate line structures may be further disposed between the first gate line structure and the second gate line structure, a fourth gate line structure, a fifth gate line structure, etc. may be disposed on the basis of fig. 3, and multiple layers of gate line structures may be disposed according to different requirements.
Referring to fig. 4, a composite screen plate, the cross-sectional structure in fig. 4 belongs to the cross-section in the direction B-B' in fig. 1, and the composite screen plate includes a first grid line structure, a second grid line structure, an auxiliary grid line 30 and a strip-shaped hollow portion 40; the strip-shaped hollowed-out part 40 comprises a first strip-shaped hollowed-out part and a second strip-shaped hollowed-out part; the first gate line structure comprises a plurality of first gate lines 10, and the second gate line structure comprises a plurality of second gate lines 20; the auxiliary gate lines 30 are disposed between the adjacent second gate lines 20, and a space is provided between the adjacent auxiliary gate lines 30, in fig. 4, only a first strip-shaped hollow portion can be seen, and no blocking exists in the first strip-shaped hollow portion, so that the first strip-shaped hollow portion is an integral hollow; the auxiliary grid line 30 which is arranged in the second strip-shaped hollowed-out part and spans the second strip-shaped hollowed-out part divides the second strip-shaped hollowed-out part into a plurality of perforations, the width of each perforation is larger than that of the auxiliary grid line 30, the perforations and the first strip-shaped hollowed-out parts are communicated, and the thickness of the auxiliary grid line 30 is equal to that of the second grid line 20.
Referring to fig. 5, the width of the auxiliary gate line 30 is Wd, and the width of the through hole along the extending direction of the second bar-shaped hollow portion is Da, where the value of Wd is not greater than 20 micrometers, for example, the value of Wd is 5 micrometers, 8 micrometers, 16 micrometers; the Da is not less than 20 microns, for example, da is 30 microns, 45 microns, 55 microns, 80 microns.
In one embodiment, the first gate line structure may be formed of one of PI, PET, PMMA, nickel-chromium alloy, nickel-tungsten alloy, and nickel-molybdenum alloy, and the second gate line structure may be formed of one of nickel, nickel-chromium alloy, nickel-tungsten alloy, and nickel-molybdenum alloy; the material used for the auxiliary gate line may be the same as or different from the material of the second gate line structure.
The application provides a compound half tone, through first grid line structure with second grid line structure stack sets up, and erect auxiliary grid line structure between the second grid line structure, first grid line structure with be equipped with fretwork portion between the second grid line structure, the fretwork portion between the auxiliary grid line structure with the second grid line structure cuts apart into a plurality of perforation, and conductive paste is passing fretwork portion through the perforation like this, and the electrode that conductive paste formed just so does not have the structure, and such electrode conductivity is better and the conversion rate can be better.
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other ways than those described above and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not limited to the specific embodiments disclosed above. In addition, the technical features of the above-described embodiments may be combined arbitrarily, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description of the present specification.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A knotless composite metal screen printing plate comprising: the strip-shaped hollowed-out parts are arranged in parallel; the auxiliary grid line structure comprises a plurality of auxiliary grid lines which are arranged in parallel, and the auxiliary grid lines are arranged between the strip-shaped hollowed-out parts and divide the strip-shaped hollowed-out parts into a plurality of perforations.
2. The knotless composite metal screen according to claim 1, wherein the width of the perforation in the extending direction of the strip-shaped hollowed-out portion is greater than the width of the auxiliary grid line, and the width of the perforation is not less than 20 microns.
3. The knotless composite metal screen printing plate of claim 1, wherein the strip-shaped hollowed-out portion comprises a first strip-shaped hollowed-out portion and a second strip-shaped hollowed-out portion, and the auxiliary grid line is arranged in the second strip-shaped hollowed-out portion.
4. The knotless composite metal screen printing plate of claim 3, further comprising a first grid line structure and a second grid line structure, wherein the first grid line structure comprises a plurality of first grid lines, the first strip-shaped hollowed-out parts are formed between adjacent first grid lines, the second grid line structure comprises a plurality of second grid lines, and the second strip-shaped hollowed-out parts are formed between adjacent second grid lines.
5. A knotless composite metal screen according to claim 3 wherein the first strip-shaped hollowed-out portion is an integral hollowed-out portion.
6. The knotless composite metal screen printing plate of claim 4 wherein the auxiliary grid line and the second grid line are of an integral structure, and the second grid line and the auxiliary grid line are in the same plane.
7. The knotless composite metal screen printing plate of claim 4, wherein the width of the auxiliary grid line is less than the width of the first strip-shaped hollowed-out portion, and the width of the auxiliary grid line is not more than 20 microns.
8. The knotless composite metal screen printing plate of claim 4 wherein the second grid line structure is comprised of metal and the auxiliary grid line structure is the same material as the second grid line structure.
9. A knotless composite metal screen according to claim 3 wherein the width of the first strip-shaped hollowed-out portion is no greater than 30 microns and the width of the second strip-shaped hollowed-out portion is no greater than 200 microns.
10. A knotless composite metal screen according to claim 3 wherein the first and second strip-shaped hollowed-out portions are in communication.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022113728844 | 2022-11-04 | ||
| CN202211372884 | 2022-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219115014U true CN219115014U (en) | 2023-06-02 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211456466.3A Pending CN117984651A (en) | 2022-11-04 | 2022-11-21 | Knotless composite screen printing plate |
| CN202223081493.5U Active CN219115014U (en) | 2022-11-04 | 2022-11-21 | Knotless composite metal screen plate |
| CN202223081539.3U Active CN219294972U (en) | 2022-11-04 | 2022-11-21 | Composite screen plate with protective layer |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211456466.3A Pending CN117984651A (en) | 2022-11-04 | 2022-11-21 | Knotless composite screen printing plate |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223081539.3U Active CN219294972U (en) | 2022-11-04 | 2022-11-21 | Composite screen plate with protective layer |
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|---|---|
| CN (3) | CN117984651A (en) |
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- 2022-11-21 CN CN202211456466.3A patent/CN117984651A/en active Pending
- 2022-11-21 CN CN202223081493.5U patent/CN219115014U/en active Active
- 2022-11-21 CN CN202223081539.3U patent/CN219294972U/en active Active
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| Publication number | Publication date |
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| CN117984651A (en) | 2024-05-07 |
| CN219294972U (en) | 2023-07-04 |
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