Device and method for etching silver syrup on electronic product

Abstract

The invention relates to a device and a method for etching silver syrup on an electronic product. The device is characterized in that an optical shutter is arranged at an output end of a high-frequency short pulse laser, wherein a beam expanding lens is arranged at the output end of the optical shutter; a 1/2 wave plate and a Glan prism are arranged at the output end of the beam expanding lens in turn; a 45-degree holophote is arranged at the output end of the Glan prism; a vibrating lens and a scanning field lens are arranged at the output end of the 45-degree holophote in turn; the scanning field lens is opposite to a four-shaft absorbing platform; a coaxial blowing and sucking dust-collecting system is arranged on the four-shaft absorbing platform; and CCD (charge coupled device) contraposition systems are respectively arranged at opposite angle positions of the four-shaft absorbing platform. The method is characterized by using a high-frequency infrared pulse laser as a laser source, processing a target position of a material by using a diagonal CCD grabbing target, ensuring a processing chart being one-to-one corresponding to a sample position on a platform, and etching the silver syrup, copper films or molybdenum aluminum layers in invisible areas of different touch screen products, thereby achieving the etching purpose by gasifying film materials in the invisible areas under the action of the high-frequency short pulse infrared laser.

Description

technical field [0001] The invention relates to a device and method for etching silver paste, copper layer or molybdenum-aluminum-molybdenum layer on electronic products with infrared short pulse laser. Background technique [0002] Due to the continuous growth of demand for touch electronic products such as mobile phone touch screens and tablet computers, there are high functional requirements for etching silver paste on glass substrates or PET substrates. Specifically, when the thickness of the etching silver paste varies within the range of 200nm to 30um, stable silver paste lines with small line width and complete functions can be produced. [0003] Silver paste is a viscous paste of a mechanical mixture composed of high-purity (99.9%) metallic silver particles, binders, solvents, and additives. Conductive silver paste has very strict requirements on its components, and its quality, content, shape and size are closely related to the performance of silver paste. [0004...

AI Technical Summary

Problems solved by technology

[0004] The realization of the traditional silver paste line function is to use screen printing. This method can only print silver paste with the thinnest width of 80um, and the yield rate is low, and the linearity is uneven. It is cumbersome to replace different batches of products, and chemical printing is required. Cleaning with liquid medicine will pollute the environment; the tension value of the stretching net is small, the wear resistance and chemical resistance of the finished material are poor, and it is easy to age and become brittle

This printing method has complex procedures, requires more consumables in production, and requires more manpower to maintain the production line, which has great limitations. The poor linearity of screen printing silver paste pins has become an important factor leading to the failure of displays and touch screens.

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