Screen-knot-free printing screen

Abstract

The invention relates to a screen-knot-free printing screen. The screen-knot-free printing screen comprises a screen frame, screen cloth fixed into the screen frame, and an emulsion layer, wherein thescreen cloth is composed of a lot of longitudinal yarn and transverse yarn in a perpendicular crossing mode; the longitudinal yarn comprises two adjacent section lines so that the screen cloth can bedivided into a first section located between the two section lines, and second sections located on the two sides of the first section; the longitudinal yarn and the transverse yarn in the second sections are parallelly distributed at equal intervals; the distance between the two section lines is larger than that between the longitudinal yarn in the second sections; the first section comprises anink penetrating section for forming a grid line, and the ink penetrating section is located in the middle of the first section; and the emulsion layer covers the screen cloth and enables the ink penetrating section to be exposed. According to the screen-knot-free printing screen, by completely eliminating screen knots of the ink penetrating section, screen knot disturbance is avoided, the ink penetrating performance of the printing screen during printing is improved in the structure changing mode, and virtual printing caused by deviation of the ink discharging position of the printing screen is avoided.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a knotless screen plate. Background technique [0002] With the increasing demand for energy, energy issues have increasingly become a major issue restricting the development of the international society and economy, which prompts people to continue to explore new energy sources, among which solar energy research occupies an important position. As one of the core technologies of solar energy research, solar cells have also developed rapidly in recent years. Improving the conversion efficiency of solar cells is the main research object of solar cells at present. In addition to the selection and optimization of battery substrate materials and the improvement of cell manufacturing processes, etc. In addition to the requirements, the conversion efficiency of solar cells can also be improved by adopting a suitable high-precision and high-stability printing method. In the printing...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a knot-free screen for the problem that the screen in the prior art cannot take into account both good printing ink permeability and the characteristics of avoiding network knots.

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