Screen printing plate and solar cell
By designing a paste-containing cavity and baffle structure in the screen printing stencil, the printing is completed by utilizing the paste's own gravity, thus solving the problem of severe loss of conductive paste during screen printing and achieving more efficient utilization of conductive paste and higher quality of electrode grid line printing.
Patent Information
- Application Number
- CN202520557080.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-27
AI Technical Summary
When using existing screen printing stencils to prepare the front and back electrode grid lines of solar cells, the conductive paste has a large contact area with air, which makes the organic components easy to volatilize and the bonding and curing rate fast, resulting in serious loss of conductive paste.
Design a screen printing stencil comprising a frame, a screen, and baffles to form a paste receiving cavity. Conductive paste is injected through a paste injection port, and printing is completed by utilizing the paste's own gravity, reducing contact with air and lowering the evaporation rate and bonding/curing rate.
It effectively reduces the loss of conductive paste, improves printing quality and efficiency, and reduces the volatilization rate of organic components and the bonding and curing rate.
Smart Images
Figure CN223701986U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of solar cells, in particular to a screen printing screen and a solar cell. BACKGROUND
[0002] In a solar cell, a screen printing screen is often used to print grid lines on the surface of the cell. The screen printing screen is generally of an open type. The open type screen printing screen is used as follows: the conductive paste is spread on the screen printing screen, and a squeegee is slightly pressed downward along the direction of the grid lines so that the conductive paste enters the grid line holes in the screen printing screen and is then printed onto the cell through the grid line holes to form the front and back surface electrode grid lines of the solar cell.
[0003] The use of such an open type screen printing screen to prepare the front and back surface electrode grid lines has the following defects: the area of the conductive paste directly in contact with the air is large, and the organic components are prone to escape from the surface of the conductive paste into the air, thereby accelerating the volatilization rate of the organic components in the conductive paste, and the rate of adhesion and solidification of the conductive paste is also faster, resulting in a more serious loss of the conductive paste.
[0004] It should be noted that the above content is not necessarily prior art, nor is it used to limit the patent protection scope of the present application. CONTENT OF THE UTILITY MODEL
[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a screen printing screen and a solar cell, which alleviate the problem of serious loss of conductive paste.
[0006] To achieve the above-mentioned purpose, the present application provides a screen printing screen, comprising:
[0007] a frame;
[0008] a screen tensioned on a first side of the frame;
[0009] a baffle plate arranged on a second side of the frame, the second side being arranged opposite to the first side; a paste accommodating cavity is formed between the baffle plate, the frame and the screen;
[0010] wherein the baffle plate is provided with a paste injection port penetrating the baffle plate, or the frame edge is provided with a paste injection port penetrating the frame edge.
[0011] In some embodiments, the frame includes four side edges, and the paste injection port includes a plurality of paste injection ports, and the plurality of paste injection ports are uniformly distributed on the two opposite side edges.
[0012] In some embodiments, the four side edges include two opposite long edges and two opposite short edges, and the paste injection ports are distributed on the two opposite long edges.
[0013] In some embodiments, the slurry is injected into the slurry accommodating cavity through a slurry injector, and the output port of the slurry injector is matched with the slurry injection port.
[0014] In some embodiments, the barrier plate is detachably connected with the frame.
[0015] In some embodiments, the barrier plate comprises one or more of a wire mesh, a metal plate, and a plastic plate.
[0016] In some embodiments, the frame is made of a metal material.
[0017] In some embodiments, the height of the frame is 30-35 μm.
[0018] In some embodiments, a film plate is further provided, and the film plate is attached to the side of the wire mesh that is away from the barrier plate; the film plate is provided with a grid hole, and the grid hole is matched with the target shape to be printed.
[0019] The present application further provides a solar cell, comprising a solar cell piece and a grid line printed on the surface of the solar cell piece, and the grid line is printed by using the screen printing plate as described above.
[0020] In the technical solution of the present application, the screen printing plate is provided with a slurry accommodating cavity, and the conductive slurry is placed in the slurry accommodating cavity, which can reduce the contact between the organic components in the conductive slurry and the external air, slow down the volatilization speed of the organic components, reduce the bonding rate and solidification rate of the conductive slurry, and thus effectively reduce the loss of the conductive slurry. BRIEF DESCRIPTION OF DRAWINGS
[0021] In the drawings, like reference numerals refer to like elements throughout the various drawings. The drawings are not necessarily to scale, emphasis instead being placed on illustrating principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.
[0022] Figure 1 FIG. 1 shows a cross-sectional structure schematic diagram of a screen printing plate in an embodiment of the present application;
[0023] Figure 2 FIG. 2 shows a cross-sectional structure schematic diagram of a grid hole in an embodiment of the present application;
[0024] Figure 3 FIG. 3 shows a three-dimensional structure schematic diagram of a screen printing plate without a barrier plate in an embodiment of the present application;
[0025] Figure 4Fig. 1 shows a structural schematic diagram of a screen in an embodiment of the present application.
[0026] Figure 5 Fig. 1 shows a structural schematic diagram of a screen in an embodiment of the present application.
[0027] In the figure, 1 is a slurry accommodating cavity; 11 is a slurry injection port; 12 is a grid line hole; 13 is a frame body; 14 is a screen; 15 is a barrier plate; and 16 is a film plate. DETAILED DESCRIPTION
[0028] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. In the drawings, the size and relative sizes of layers, regions, elements, and the like can be exaggerated for clarity. The same or similar reference numerals are used throughout the drawings to indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are merely intended to explain the present application, and should not be understood as limiting the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0029] It should be understood that when an element or layer is referred to as being "on", "adjacent", "connected to", or "coupled to" another element or layer, it can be directly on, adjacent, connected or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly adjacent", "directly connected to", or "directly coupled to" another element or layer, then there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present disclosure. Similarly, a second element, component, region, layer or section discussed below could be termed a first element, component, region, layer or section without departing from the teachings of the present disclosure.
[0030] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0031] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0032] In this application, when referring to a numerical interval (i.e. a numerical range), unless otherwise specified, the distribution of the selected values in the numerical interval is considered to be continuous and includes both numerical endpoints (i.e. the minimum and maximum values) of the numerical interval and every value between the two numerical endpoints. If the numerical interval refers only to integers within the numerical interval, unless otherwise specified, the two endpoint integers and every integer between the two endpoints are included, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe a feature or characteristic, these numerical ranges can be combined. In other words, unless otherwise indicated, the numerical ranges disclosed in this application should be understood to include any and all sub-ranges encompassed therein. The "numerical" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. The "numerical interval" is intended to broadly include quantitative intervals such as percentage intervals, ratio intervals, and value intervals.
[0033] The embodiments of the present application aim to provide a screen printing screen and a solar cell. The screen printing screen is provided with a paste accommodating cavity 1, and the conductive paste is placed in the paste accommodating cavity 1, which can reduce the contact of the organic components in the conductive paste with the external air, slow down the volatilization speed of the organic components, and reduce the bonding rate and curing rate of the conductive paste, thereby effectively reducing the loss of the conductive paste.
[0034] The embodiments of the present application provide a screen printing screen, such as Figures 1 to 5As shown, it comprises: a frame 13, a silk screen 14 and a baffle 15. The silk screen 14 is tensioned on the first side of the frame 13; the baffle 14 is arranged on the second side of the frame 13, which is arranged opposite to the first side; the baffle 15, the frame 13 and the silk screen 14 form a slurry containing cavity 1; wherein the baffle 15 is provided with a slurry injection port 11 penetrating through the baffle 15, or the frame edge of the frame 13 is provided with a slurry injection port 11 penetrating through the frame edge.
[0035] In the technical scheme of the present application, the structure of the silk screen printing screen can be: on the frame 13 of the conventional open type silk screen printing screen, an additional baffle 15 is added, and a certain gap is kept between the baffle 15 and the silk screen 14, so that the slurry containing cavity 1 is formed, and the slurry injection port 11 is arranged on both sides (opposite sides, which can be left and right sides or front and back sides) of the frame 13. Of course, the slurry injection port 11 can also be arranged on the front, back, left and right sides of the frame 13. The use method of the silk screen printing screen with the slurry injection port 11 arranged on both sides is: the slurry injection port 11 on both sides is inserted into the slurry injector matched with the slurry injection port 11, that is, the opening of the slurry injector is consistent with the opening of the slurry injection port 11, and when the two are used together, the slurry can be prevented from leaking out. Slowly inject the slurry before silk screen printing, and the slurry will gradually fill the slurry containing cavity 1. Each time when printing is needed, the slurry is injected into the slurry containing cavity 1 through the slurry injection port 11. The slurry itself has a certain weight, and due to the pressure generated by the slurry itself, the slurry in the slurry containing cavity 1 can be printed on the battery sheet through the grid line hole 12 to form the electrode grid line. This type of silk screen printing screen also has the advantage that the printing of the electrode grid line can be completed by the pressure generated by the weight of the slurry itself, and the step of slightly pressing the conductive slurry into the grid line hole of the screen by the squeegee along the grid line direction, and then printing it onto the battery sheet through the grid line hole is omitted. This means that the printing of the electrode grid line can be completed without relying on the back and forth movement of the squeegee, which avoids the situation that the slurry is scraped out of the printing area due to improper operation, and effectively reduces the loss of conductive slurry.
[0036] In the technical scheme of the present application, due to the arrangement of the baffle 15, the slurry is slowly injected before silk screen printing, and the slurry will gradually fill the slurry containing cavity 1. By means of the weight of the slurry itself, the slurry in the slurry containing cavity 1 can be printed on the battery sheet through the grid line hole 12 to form the electrode grid line. In addition, due to the arrangement of the baffle 15, when the slurry fills the slurry containing cavity 1 and continues to inject the slurry into the slurry containing cavity 1, the baffle 15 will press the slurry downward, so that the conductive slurry enters the grid line hole of the screen, and then is printed onto the battery sheet through the grid line hole, so as to ensure the printing quality.
[0037] In the technical scheme, the screen printing screen plate is provided with a slurry accommodating cavity 1, and the conductive slurry is placed in the slurry accommodating cavity 1, so that the contact of the organic component in the conductive slurry with the external air is reduced, the volatilization speed of the organic component is slowed down, the bonding speed and the solidification speed of the conductive slurry are reduced, and the loss of the conductive slurry is effectively reduced.
[0038] In some embodiments, the frame 13 includes four sides, and the plurality of slurry injection ports 11 are evenly distributed on two opposite sides.
[0039] In the embodiments, the slurry injection ports 11 are oppositely arranged, and the slurry in the slurry accommodating cavity 1 is distributed more uniformly by simultaneously injecting the slurry into each slurry injection port 11, that is, when the printing of the electrode grid line is completed by the pressure generated by the gravity of the slurry itself, the pressure distribution of each part is more uniform, which is beneficial to improving the printing quality of the electrode grid line.
[0040] In some embodiments, the four sides include two opposite long sides and two opposite short sides, and the slurry injection ports 11 are distributed on the two opposite long sides.
[0041] In the embodiments, the slurry injection ports 11 are oppositely arranged and distributed on the two opposite long sides, and the slurry in the slurry accommodating cavity 1 is distributed more uniformly by simultaneously injecting the slurry into each slurry injection port 11, that is, when the printing of the electrode grid line is completed by the pressure generated by the gravity of the slurry itself, the pressure distribution of each part is more uniform, which is beneficial to improving the printing quality of the electrode grid line.
[0042] In some embodiments, the slurry is injected into the slurry accommodating cavity 1 from the slurry injection port 11 by a slurry injector, and the output port of the slurry injector is matched with the slurry injection port 11. In the embodiments, the slurry injector matched with the slurry injection port 11 is inserted into the slurry injection port 11, so that the opening of the slurry injector is consistent with the opening of the slurry injection port 11, and when the two are used together, the slurry can be prevented from leaking, and the screen printing screen plate has better use effect.
[0043] In some embodiments, the barrier plate 15 is detachably connected with the frame 13.
[0044] In the embodiments, the barrier plate 15 can be detachably connected with the frame 13 by various connecting members (such as threaded connection, and any suitable connecting mode can be selected), so that the barrier plate 15 can be replaced. In addition, in order to prevent the slurry in the slurry accommodating cavity 1 from leaking, when the barrier plate 15 is detachably connected with the frame 13, a leak-proof gasket can be additionally arranged between the barrier plate 15 and the frame 13.
[0045] In some embodiments, the barrier plate 15 comprises one or more of a wire mesh, a metal plate, and a plastic plate.
[0046] In the embodiments, the barrier plate 15 is added to form a relatively closed chamber, reduce the contact of the organic components in the conductive paste with the external air, slow down the volatilization speed of the organic components, and reduce the bonding rate and solidification rate of the conductive paste, thereby effectively reducing the loss of the conductive paste. Therefore, the material of the barrier plate 15 can be selected according to actual needs. Optimizing the material of the barrier plate 15 is conducive to forming a more closed chamber, thereby reducing the bonding rate and solidification rate of the conductive paste. The barrier plate 15 can be a wire mesh because, in use, a squeegee can be used to press the wire mesh, achieving the effect of facilitating the printing of the metal grid lines.
[0047] In some embodiments, the frame 13 is made of a metal material. In the embodiments, a metal material with high mechanical strength, lightness, corrosion resistance, and easy processing is selected as the material of the frame 13, which can ensure the mechanical stability of the screen printing screen and is light and durable.
[0048] In some embodiments, the height of the frame 13 is 30-35 μm. In the embodiments, optimizing the height of the frame 13 can ensure the mechanical stability of the screen printing screen and is light and durable. Figure 3
[0049] In some embodiments, a film plate 16 is further included, which is attached to the side of the wire mesh 14 away from the barrier plate 15; the film plate 16 is provided with a grid hole 12, which is matched with the target shape to be printed. In the embodiments, the film plate 16 can be used for patterned printing, which is suitable for more use scenarios.
[0050] In the embodiments, the slurry injection port 11 and the grid hole 12 have a certain vertical spacing, and the greater the vertical spacing between the slurry injection port 11 and the grid hole 12, the better. For example, when the grid hole 12 is arranged at the bottom end of the slurry containing cavity 1, the slurry injection port 11 can be arranged at a position close to the top end of the slurry containing cavity 1, which can prevent the slurry from leaking out of the slurry injection port 11, and the screen printing screen has a better use effect.
[0051] The application further provides a solar cell, which comprises a solar cell piece and a grid line printed on the surface of the solar cell piece, and the grid line is printed by using the screen printing screen as described above.
[0052] The following specific examples further illustrate the present application but should not be construed as limiting the present application. Modifications or substitutions of the method, steps or conditions of the present application, without departing from the spirit and scope of the present application, are within the scope of the present application.
[0053] Example 1
[0054] The screen printing screen plate, as shown in Figures 1-5 includes:
[0055] The frame 13, the screen 14, the baffle 15; the material of the frame 13 is aluminum alloy; the screen 14 is tensioned on the first side of the frame 13; the screen 14 is as shown in Figure 5 ; the baffle 14 is arranged on the second side of the frame 13, and the second side is arranged opposite to the first side; the baffle 15, the frame 13 and the screen 14 form a slurry containing cavity 1; specifically, the frame 13 is a hollow box structure with the top surface and the bottom surface removed, the screen 14 is installed at the position close to the bottom surface of the box, and the screen 14 is perpendicular to the side surface of the box; the baffle 15 is installed at the position close to the top surface of the box, and the baffle 15 is perpendicular to the side surface of the box; the frame 13, the screen 14 and the baffle 15 jointly form the slurry containing cavity 1; the screen 14 is parallel to the baffle 15. Figure 3
[0056] The adhesive film plate 16 is arranged on the side of the screen 14 away from the baffle 15; the adhesive film plate 16 is provided with a grid hole 12, and the grid hole 12 is matched with the target shape to be printed; the grid hole 12 is as shown in Figure 2 .
[0057] Among them, the frame edge of the frame 13 is provided with a slurry injection port 11 penetrating through the frame edge; as shown in Figure 1 , the slurry injection port 11 is used to inject conductive slurry into the slurry containing cavity 1; the slurry injection port 11 has four, and the slurry injection port 11 is distributed on the front, rear, left and right side surfaces of the slurry containing cavity 1; any one of the slurry injection port 11 is matched with a slurry injector; the slurry injection port 11 has a certain vertical spacing with the grid hole 12; the conductive slurry in the slurry containing cavity 1 is printed onto the battery piece through the grid hole 12 to form the electrode grid line.
[0058] Example 2
[0059] The screen printing screen plate, as shown in Figures 1-4 includes:
[0060] Frame 13, screen 14, baffle 15; the material of the frame 13 is aluminum alloy; the screen 14 is tensioned on the first side of the frame 13; the screen 14 is as shown in Figure 5 The baffle 14 is arranged on the second side of the frame 13, and the second side is arranged opposite to the first side; the baffle 15, the frame 13 and the screen 14 form a slurry containing cavity 1; specifically, the frame 13 is a hollow box structure with the top surface and the bottom surface removed, the screen 14 is arranged at the position close to the bottom surface of the box, and the screen 14 is perpendicular to the side surface of the box; the baffle 15 is arranged at the position close to the top surface of the box, and the baffle 15 is perpendicular to the side surface of the box; the frame 13, the screen 14 and the baffle 15 form the slurry containing cavity 1; and the screen 14 is parallel to the baffle 15. Figure 3
[0061] Adhesive film plate 16, the adhesive film plate 16 is arranged on the side of the screen 14 away from the baffle 15; the adhesive film plate 16 is provided with a grid hole 12, and the grid hole 12 is matched with a target shape to be printed; the grid hole 12 is as shown in Figure 2 .
[0062] The baffle 15 is provided with two slurry injection ports 11 penetrating the baffle 15; the slurry injection ports 11 are used to inject conductive slurry into the slurry containing cavity 1; any one of the slurry injection ports 11 is matched with a slurry injector; the conductive slurry in the slurry containing cavity 1 is printed onto the battery piece through the grid hole 12 to form an electrode grid line.
[0063] The method for using the screen printing screen plate is as follows: the slurry is slowly injected into the slurry containing cavity 1 through the slurry injector matched with the slurry injection port 11, and the slurry gradually fills the slurry containing cavity 1; the slurry is continuously injected into the slurry containing cavity 1 through the slurry injection port 11 every time printing is needed; the slurry itself has a certain weight, and the slurry in the slurry containing cavity 1 can be printed onto the battery piece through the grid hole 12 due to the pressure generated by the slurry itself, so as to form an electrode grid line.
[0064] In the technical scheme, the screen printing screen plate is provided with the slurry containing cavity 1, and the conductive slurry is placed in the slurry containing cavity 1, so that the contact between the organic components in the conductive slurry and the external air is reduced, the volatilization speed of the organic components is slowed down, the bonding speed and the solidification speed of the conductive slurry are reduced, and the loss of the conductive slurry is effectively reduced.
[0065] The application can also provide a solar cell, comprising a solar cell piece and a grid line printed on the surface of the solar cell piece, wherein the grid line is printed by using the screen printing screen plate as described above. The solar cell has the advantages of the screen printing screen plate, and thus will not be described here.
[0066] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The orientation terms "inner" and "outer" refer to the inner and outer relative to the contour of each component itself. For example, if the devices in the drawings are inverted, the devices described as "above" or "on" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The devices can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.
[0067] It should also be noted that the "one embodiment", "another embodiment", "embodiment", and the like mentioned in the present application refer to the specific features, structures, or characteristics described in conjunction with the embodiment, which are included in at least one embodiment generally described in the present application. The same expression appearing in several places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is claimed that the implementation of such feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of the present application.
[0068] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.
[0069] It should also be noted that the above is only the preferred embodiment of the present application, and does not limit the patent protection scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A screen printing screen, characterized by The application relates to a screen printing plate, which comprises: a frame; a screen, which is tensioned on a first side of the frame; a baffle, which is arranged on a second side of the frame, the second side being arranged opposite to the first side; a slurry accommodating cavity is formed among the baffle, the frame and the screen; wherein the baffle is provided with a slurry injection port penetrating through the baffle, or the frame is provided with a slurry injection port penetrating through a frame edge of the frame.
2. The screen printing screen according to claim 1, characterized in that The frame comprises four side edges, and the slurry injection port comprises a plurality of slurry injection ports, which are uniformly distributed on two opposite side edges.
3. The screen printing screen according to claim 2, characterized in that The four side edges comprise two opposite long edges and two opposite short edges, and the slurry injection ports are distributed on the two opposite long edges.
4. The screen printing screen according to any one of claims 1 to 3, characterized in that Slurry is injected into the slurry accommodating cavity through a slurry injector, and an output port of the slurry injector is matched with the slurry injection port.
5. The screen printing screen of claim 1, wherein The baffle is detachably connected with the frame.
6. The screen printing screen according to claim 1 or 5, characterized in that The baffle comprises one or more of a screen, a metal plate and a plastic plate.
7. The screen printing screen of claim 1, wherein The frame is made of a metal material.
8. The screen printing screen of claim 1, wherein The height of the frame is 30-35 mu m.
9. The screen printing screen of claim 1, wherein, The application further relates to a rubber film plate, which is arranged on a side of the screen, which is away from the baffle; the rubber film plate is provided with a grid hole, which is matched with a target shape to be printed.
10. A solar cell, characterized by, The application relates to a solar cell and a grid line printed on a surface of the solar cell, and the grid line is printed by using the screen printing plate according to any one of claims 1 to 9.