Printing screen for solar cell and method for producing solar cell

A technology of solar cells and printing screens, applied in printing, printing machines, rotary printing machines, etc., can solve problems such as difficult to accurately control electrode width, prone to quality problems, and affecting product quality, so as to achieve less drop in screen tension and less difficulty Distortion, graphics highly subtle effects

Inactive Publication Date: 2011-10-12
WUXI SUNTECH POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Since the metal paste tends to be more and more high-viscosity in terms of characteristics, in the case of continuous printing, due to the sharp drop in the tension of the steel mesh, it is easy to be distorted and deformed, resulting in deformation of the printed graphics, and the printing screen needs to be replaced more frequently, increasing In addition, in the current production of solar cells, in order to increase the effective light absorption area of ​​the silicon wafer to improve the conversion efficiency, the width of the elec...

Method used

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  • Printing screen for solar cell and method for producing solar cell
  • Printing screen for solar cell and method for producing solar cell
  • Printing screen for solar cell and method for producing solar cell

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Embodiment Construction

[0034] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] Such as image 3 and Figure 4 As shown, the solar cell printing screen plate of the present embodiment has a mesh metal sheet 11 (as a printing part) with a plurality of mesh holes, a screen frame part 3, and a mesh frame part 3 located on the mesh metal sheet 11 and the screen frame part. 3. Between 2 sections of elastic polyester mesh. The mesh metal sheet 11 has mesh holes evenly arranged in a matrix or honeycomb shape, that is, the mesh holes are evenly distributed in the row and column direction of the mesh metal sheet 11, and the shape of the mesh holes can be quadrilateral, circular, or other polygonal shapes. (such as pentagon, hexagon, etc.) and one of its combinations. Mesh metal sheet 11 can be directly made by electroforming process, and can also be made by punching a plurality of holes on the metal sheet. Both electroforming tec...

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Abstract

The invention discloses a printing screen for a solar cell and a method for producing the solar cell. The printing screen for the solar cell comprises a printing screen frame part, a polyester mesh part and a printing part, wherein the polyester mesh part is connected with the printing screen frame part and the printing part; the printing part is a meshed metal sheet; and mesh openings on the meshed metal sheet are evenly arranged in a matrix shape. The invention also discloses a method for producing the solar cell. The method comprises the step of using the printing screen for the solar cell to produce the solar cell. In the process of the producing the solar cell, the printing screen is utilized to print metal electrodes of the solar cell, thus not only prolonging the service life of the printing screen and reducing the production cost, but also keeping graphs required by the solar cell printed through using a silk-screen printing technology unchanged and controlling the width of electrodes accurately, thus improving the product quality.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a printing screen plate for solar cells and a method for producing solar cells. Background technique [0002] In the solar cell manufacturing process, the screen printing process is a very critical connectivity process. Its main function is to print various patterns (metal layers) required for solar cells, such as conductive metal electrodes (positive and negative electrodes). [0003] If the printing accuracy of the screen printing process does not meet the requirements, the solar cell will become waste, so the selection of the printing screen is extremely important. Compared with elastic polyester mesh, steel mesh has the characteristics of finer wire diameter, more meshes, better wear resistance, high strength, stable size, low stretchability, and good ink passing performance, so it is suitable for screen printing for the production of solar cells. craft. However, the...

Claims

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Application Information

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IPC IPC(8): H01L31/18B41F15/34
CPCY02P70/50
Inventor 王赟任晓栋邹春梅
Owner WUXI SUNTECH POWER CO LTD
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