METAL NANO PARTICLE LIQUID DISPERSION CAPABLE OF BEING SPRAYED IN FINE PARTICLE FORM AND BEING APPLIED IN LAMINATED STATE

摘要

A metal nano particle liquid dispersion capable of being sprayed in a fine particle form and being applied in a laminated state, which comprises a dispersion solvent having a boiling point of 80°C or higher and, dispersed therein, metal nano particles having an average particle diameter of 1 to 100 nm, contains the dispersion solvent in a volume proportion in the range of 55 to 80 volume %, and has a liquid viscosity (20°C) in the range of 2 to 30 mPa s. The liquid dispersion, when it is sprayed by the use of the ink-jet method or the like, is concentrated in the course of flying, due to the vaporization of the dispersion solvent contained in the droplet thereof, and is converted to such a viscous liquid dispersion that can be applied in a laminated state. The above nano particle liquid dispersion can be suitably used for forming an electroconductive layer having an extremely fine shape of pattern and a high ratio of thickness/minimum width in a cross-sectional shape, has a high fluidity so as to allow the application of the ink-jet method to the drawing of a fine pattern shape with high accuracy, and uses only metal nano particles as an electroconductive medium.