Patent ID: 9348340
Filing Date: 2016-05-24
CPC Classification: G05D,H01L,Y10T

Claim Text:
1. A liquid processing apparatus comprising: a first line connected to a processing liquid supply source; a pump configured to send a processing liquid from the processing liquid supply source to the first line; a plurality of second lines connected to the first line; a branch line connected to a branch point on each of the plurality of second lines; a liquid processing unit configured to perform a liquid processing on a substrate with the processing liquid supplied through each branch line; an orifice provided at an upstream side of the branch point on each of the plurality of second lines; a first control valve provided at a downstream side of the branch point on each of the plurality of second lines; a flowmeter provided on each of the branch lines; and a control unit configured to control a corresponding first control valve based on a flow rate detected by the flowmeter to control the flow rate of the processing liquid flowing through a corresponding branch line, wherein the first control valve changes an amount of the processing liquid flowing to a downstream side of the first control valve in order to control a pressure of the processing liquid in a section between the orifice of a corresponding second line and the first control valve, and a flow rate of the processing liquid supplied to the corresponding liquid processing unit through the corresponding branch line.