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Solar cell electrode printing mask plate and manufacturing method thereof

A solar cell and reticle technology, applied in printing, printing machine, printing plate preparation, etc., can solve problems such as limiting the conversion rate of solar cells, and achieve the effects of improving photoelectric conversion efficiency, reducing losses, and uniformity

Inactive Publication Date: 2015-09-23
KUN SHAN POWER STENCIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the traditional solar cell electrode printing is to use ordinary screen printing, and the diameter of the fine grid line printing is generally above 70um, which seriously limits the improvement of the solar cell conversion rate.

Method used

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  • Solar cell electrode printing mask plate and manufacturing method thereof
  • Solar cell electrode printing mask plate and manufacturing method thereof
  • Solar cell electrode printing mask plate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Figure 7 Shown is a flow chart of an embodiment of the present invention, the mask involved is a two-layer structure, and the specific scheme is as follows:

[0043] a. Pre-treat the stainless steel mandrel to make the surface of the mandrel clean and smooth.

[0044] b. Coat a layer of photosensitive film evenly on the stainless steel mandrel; transfer the first layer pattern of the electrode mask plate of the solar cell to the photosensitive dry film through an exposure machine; perform a series of processes such as developing, cleaning and drying after exposure, and unpainted The dry film at the exposed area is cleaned and dissolved, leaving the solar cell electrode mask pattern. The first thin grid line and the main grid line of the solar cell electrode mask are connected by bridges between the grid lines. Corresponding; put the mandrel with the pattern made into the electroforming solution for electrodeposition molding, and take out the mandrel with a layer of el...

Embodiment 2

[0049] On the main grid line of the mask plate, an array point that is impenetrable to conductive silver paste is arranged, and the graphic shape of the array point can be any shape, such as a circle, a rhombus, a rectangle, a square, a triangle, a polygon, etc., preferably a circle; When the shape of the array point is circular, the diameter of the circle is 50um-1mm; when the shape of the array point is rectangular, the side length of the circle is 50um-1mm; when the shape of the array point is triangular, The side length of the triangle is 50um-1mm; the distance between the centers of the array points is 50um-1mm; the row (or column) where the array points are located is parallel to, perpendicular to, or at a certain angle to the main grid line. image 3 It is a mask plate with array points; 3 is an enlarged schematic diagram of the main grid line and the fine grid line, the graphic shape of the array point 4 is circular, the diameter is 50um, and the distance between the ce...

Embodiment 3

[0051] Figure 4 Shown is a schematic diagram of a mask with side holes. The surrounding edges of the mask plate are provided with side holes arranged according to certain rules; the side holes of the mask plate can be in any shape, preferably circular; there are two rows of side holes parallel to the sides near each side of the mask plate, and each row Scattered at equal intervals; the side holes are used to fix the mask on the frame with glue or on the frame through a silk screen.

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Abstract

The invention relates to a solar cell electrode printing mask plate and a manufacturing method thereof. The solar cell electrode printing mask plate comprises a multiple-layer structure which is at least composed of a first electroforming layer and a second electroforming layer, and main gird lines and fine gird lines are arranged on the first electroforming layer and the second electroforming layer. According to the solar cell electrode printing mask plate and the manufacturing method thereof, the problems that silk nets are woven in an interwove and overlapped mode, and a gird line printed by a single-layer solar mask plate is in a gourd shape are resolved, the quality of printing is improved, the depth-width ratio of the fine gird lines is effectively improved, and the conversion efficiency of solar energy is improved. Besides, the solar cell electrode printing mask has broad market prospects.

Description

technical field [0001] The invention relates to a solar battery electrode printing mask plate and a manufacturing method thereof, belonging to the field of solar battery printing. Background technique [0002] Screen printing is to stretch silk fabrics, synthetic fabrics or wire mesh on the screen frame, and adopts the method for manual engraving paint film or photochemical plate-making to make screen printing forme. Modern screen printing technology is to use photosensitive materials to make screen printing plates by means of photographic plate making (so that the screen holes of the graphic part on the screen printing plate are through holes, and the screen holes of the non-graphic part are blocked. live). During printing, through the extrusion of the scraper, the ink is transferred to the substrate through the mesh of the graphic part, forming the same graphic as the original. Screen printing equipment is simple, easy to operate, easy to print and plate-making, with low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F15/36B41C1/14
Inventor 魏志凌高小平
Owner KUN SHAN POWER STENCIL
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