Plate making method of silk-screen printing plate

Abstract

The invention relates to a plate making method of a silk screen plate, and the method comprises the following steps: providing a screen plate, and covering a film layer on the surface of the screen plate; placing the screen plate covered with the film layer on a tensioning jig, and enabling the tensioning jig to abut against the screen plate so as to tension the film layer; adopting an ultrafast laser to emit ultraviolet laser beams with the wavelength smaller than or equal to 355 nm in a pulse string mode, irradiating the film layer, and forming grid lines on the film layer in an etching mode. According to the plate making method of the silk-screen printing plate, an ultrafast laser device is adopted to emit ultraviolet laser beams with the wavelength smaller than or equal to 355 nm in a pulse string mode and irradiate a film layer, and grid lines are formed on the film layer in an etching mode. According to the method, the negative film does not need to be replaced, the plate making process is simplified, the plate making efficiency is improved, meanwhile, damage to the metal wire mesh can be reduced as much as possible through the machining mode that the ultrafast laser emits the laser beams in the pulse string mode, and therefore the service life of the metal wire mesh is prolonged, and cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of screen printing screen plate making, in particular to a screen printing screen plate making method. Background technique [0002] In the manufacture of contact electrodes of solar cells, it is generally formed by printing metal paste on silicon wafers by screen printing technology and sintering. When the silicon wafer is directly placed under the screen with the grid-like electrode stencil, the screen printing metal paste passes through the mesh in the middle of the screen under the extrusion of the scraper and is printed onto the silicon wafer. The stencil on the screen seals a part of the small holes of the screen so that the metal paste cannot pass through the screen, but only the grid electrode image part can pass through, so that the electrode pattern is printed on the silicon wafer, and then dried and sintered Complete electrode fabrication. Screen printing screens are widely used in the printing ...

AI Technical Summary

Problems solved by technology

The current photosensitive plate-making method has many shortcomings, such as the problems of long manufacturing steps and high cost.

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