Patent ID: 9129797
Filing Date: 2015-09-08
Classification: H01L

Abstract:
1. A cleaning method by high-pressure jet cleaning or two-fluid cleaning, comprising: a step of jetting a cleaning liquid or a mixed fluid of the cleaning liquid and a carrier gas from a jetting nozzle toward a subject of an electronic material to be cleaned and thereby cleaning the subject, wherein the cleaning liquid is at room temperature, the cleaning liquid introduced into the jetting nozzle contains a dissolved gas prepared by dissolving a gas in degassed water with a gas-dissolving membrane module in a quantity of 1.5 to 3 times as large as a saturation solubility at a temperature of the cleaning liquid, a pressure in a feed water piping connecting the gas-dissolving membrane module and the jetting nozzle is controlled thereby to prevent generation of bubbles in the cleaning liquid, the gas is supplied to a gas-phase room of the gas-dissolving membrane module through a gas supply piping having a gas flow regulating valve, the gas-phase room has a first pressure indicator measuring a pressure V the feed water piping has a feed water regulating valve and a second pressure indicator measuring a water feed pressure V V