Special conductive filament printing silver slurry for capacitive touch screen and preparation and application methods of special conductive filament printing silver slurry

Abstract

The invention discloses special conductive filament printing silver slurry for a capacitive touch screen and preparation and application methods of the special conductive filament printing silver slurry. The special conductive filament printing silver slurry for the capacitive touch screen comprises the following components in parts by weight: 60-80 parts of silver powder, 6-10 parts of vinyl resin, 22-25 parts of a solvent, 0.5-3 parts of a toner and 1-5 parts of an assistant, wherein the particle size of the silver powder is 0.0005-0.002mm. The printing silver slurry disclosed by the invention is reasonable in formula; the printing thickness can be controlled at 4-6 microns; the special conductive filament printing silver slurry is good in resistance uniformity, high in adhesive force and high in stability; the width of a printed circuit is greater than 0.06mm; the printing silver slurry is especially suitable for special conductive filament printing for the capacitive touch screen; the processes of the preparation and application methods disclosed by the invention are simple and easy to realize; the production efficiency is effectively improved; the silver slurry is relatively well adhered to most of indium-tin oxide (ITO) film materials and glass substrates; and the special conductive filament printing silver slurry is excellent in adhesive force, good in working performance and beneficial to wide popularization.

Description

technical field [0001] The invention belongs to the technical field of touch screen paste, and in particular relates to a special conductive fine line printing silver paste for capacitive touch screen and its preparation and application method. Background technique [0002] Domestic capacitive touch screen production undertakes more than 90% of the world's demand, and most of the internal current export channels are realized by printing silver paste. At present, the unit price of imported silver paste in the world is high, the requirements for the base material are strict, and the adaptability of the production process has certain defects. However, the performance of the localized silver paste product is unstable, and the versatility of matching with the base material is poor. The current phenomenon is that we want to improve the quality. Imported silver paste is used, and the cost is high. To reduce costs and use domestic materials, the quality is relatively poor. [0003]...

AI Technical Summary

Problems solved by technology

The unit price of imported silver paste in the world is high, the requirements for the substrate are strict, and there are certain defects in the adaptability of the production process, while the performance of the localized silver paste product is unstable, and the versatility of matching with the substrate is poor.

The current phenomenon is that we want to improve the quality. Imported silver paste is used, and the cost is high. To reduce costs and use domestic materials, the quality is relatively poor.