Patent ID: 8393599
Filing Date: 2013-03-12
Classification: B05B,Y10S

Abstract:
1. An apparatus for atomizing a precursor liquid in a gas to form a droplet aerosol comprised of droplets suspended in the gas for vaporization and formation of a gas/vapor mixture for subsequent thin film deposition on a substrate, said apparatus comprising: a tubular housing having a top and a bottom, said top being provided with a liquid inlet to receive liquid from a liquid source, said bottom being for attachment to a heated vaporization chamber to vaporize droplets formed by said apparatus, said housing including additionally a gas inlet to receive gas from a gas source; a capillary tube within the housing to receive the liquid at an inlet capillary tube end entering the housing through said liquid inlet and discharging the liquid through an open outlet capillary tube end; a gas-flow passageway between the tubular housing and said capillary tube; an atomizing orifice for the gas to flow through to create a high velocity gas jet to atomize the liquid discharged through the capillary tube to form droplets suspended in the gas; and said tubular housing being provided with sufficient heat insulation to produce a temperature difference of at least about 30° C. between the vaporization chamber and the inlet capillary tube end.