Patent ID: 7732346

Claim:
A wet cleaning process, comprising: performing at least one first rinse process, the first rinse process comprising: rinsing a substrate using deionized water in a rinsing tank and concurrently supplying CO2 to the rinsing tank, wherein the deionized water and the CO 2 are constantly introduced into the rinsing tank and, at the same time, the deionized water is allowed to overflow the rinsing tank, and for submerging the substrate therein; and draining the deionized water used for the rinsing and the submerging of the substrate in the previous rinsing step while maintaining the supply of the CO2 to the rinsing tank to expose the substrate in an atmosphere of CO2, wherein the deionized water is not being introduced into the tank during the step of draining the deionized water.