Patent ID: 9086190
Filing Date: 2015-07-21
Classification: B01D,B05C,B05D,F17D,H01L,Y10T

Abstract:
1. A chemical supply system for substrate processing comprising: a first container and a second container configured to store a solution; a first pipe configured to connect the first container and the second container; a first pump, located on the first pipe, configured to direct the solution stored in the first container to the second container; a first filter, located in the first pipe, configured to filter the solution flowing through the first pipe from the first container toward the second container; a second pipe configured to connect the first container and the second container; a second pump, located on the second pipe, configured to direct the solution stored in the second container to the first container; an outlet pipe, connected to the second container and extending outwardly from the second container, wherein the solution provided from the outlet pipe is supplied from above a substrate; and a third pump located on the first pipe; wherein the first filter located in the first pipe is positioned between the first pump and the third pump, a first bypass pipe, through which the solution flowing from the first container directly passes to the first filter, is provided to bypass the first pump, and a second bypass pipe, through which the solution flowing from the first filter directly passes to the second container, is provided to bypass the third pump.