Device and method for etching silver paste conducting film layer on printing ink by pulse laser

Abstract

The invention relates to a device and a method for etching a silver paste conducting film layer on printing ink by pulse laser. An optical gate, a beam expander, and a semi-transparent semi-reflecting lens are sequentially arranged at the output end of a high-frequency pulsed laser; a first 1 / 2 wave plate and a second high-reflectivity lens are arranged at the output end of the semi-transparent semi-reflecting lens; a first Glan prism and a first high-reflectivity lens are sequentially arranged at the output end of the first 1 / 2 wave plate; the output end of the first high-reflectivity lens is provided with a first galvanometer field lens system; the output end of the first galvanometer field lens system is opposite to a four-axis high-accuracy platform; the output end of the second high-reflectivity lens is provided with a second 1 / 2 wave plate and a second Glan prism; the output end of the second Glan prism is provided with a third high-reflectivity lens; the output end of the third high-reflectivity lens is provided with a second galvanometer field lens system; and the output end of the second galvanometer field lens system is opposite to the four-axis high-accuracy platform. By the invention, silver paste and indium tin oxide (ITO) in a touch-screen product can be subjected to laser etching efficiently at high accuracy.

Description

technical field [0001] The invention relates to a device and a method for pulse laser etching a silver paste conductive film layer on ink, and belongs to the technical field of laser micromachining. Background technique [0002] A capacitive touch screen is generally composed of a cover glass, an upper-line conductive sensing film layer, and a lower-line conductive sensing film layer. Among them, the main function of the cover glass is to protect the capacitive sensing film layer below, and at the same time print black ink on the back edge of the cover glass. The functions of the surrounding ink mainly have the following three functions. The first is to be beautiful; the second is to The purpose of shielding the edge lines of the invisible area; the third is to facilitate the printing of graphic symbols such as product logos. Generally, there are two types of conductive sensing film substrates: PET and glass. Among them, although the PET sensing film layer is relatively t...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a device and method for pulse laser etching silver paste conductive film layer on ink, which overcomes the complex system, low processing efficiency, and occupied area in traditional yellow light exposure, acid-base wet etching and other processing. Disadvantages such as large size, easy to produce consumables, low yield and poor selectivity

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