Patent ID: 8652344
Filing Date: 2014-02-18
Classification: H01L

Abstract:
1. A liquid treatment method comprising: placing substrates, within a process bath, such that the substrates are submerged in a process liquid when the process bath is filled with a process liquid, between a first group of process liquid supply nozzles and a second group of process liquid supply nozzles disposed in the process bath, the first group of process liquid supply nozzles being arranged at different levels on one side of the process bath and the second group of process liquid supply nozzles being arranged at different levels on another side of the process bath, each of the first group of process liquid supply nozzles having nozzle holes whose axes are directed obliquely downward to jet a process liquid obliquely downward, and each of the second group of process liquid supply nozzles having nozzle holes whose axes are directed obliquely downward to jet a process liquid obliquely downward; jetting a rinse liquid, as the process liquid, toward the substrates, from a lowermost one of the first group of process liquid supply nozzles and a lowermost one of the second group of process liquid supply nozzles; and thereafter jetting the rinse liquid toward the substrates, from all of the first and second groups of process liquid supply nozzles at the same time.