Patent ID: 7849864
Filing Date: 2010-12-14
Classification: H01L

Abstract:
1. A liquid processing system comprising: a liquid processing section including a plurality of liquid processing units horizontally disposed therein and each configured to perform a liquid process while supplying a process liquid onto a substrate; a process liquid storing section that stores the process liquid to be supplied to the liquid processing units of the liquid processing section; a supply pipe configured to guide the process liquid from the process liquid storing section to the liquid processing units; a drain pipe configured to guide the process liquid discharged from the liquid processing units; an exhaust pipe configured to guide exhaust gas exhausted from the liquid processing units; and a system casing that houses the liquid processing section, the process liquid storing section, the supply pipe, the drain pipe, and the exhaust pipe, wherein the liquid processing system further comprises a common piping box horizontally disposed inside the system casing to partition an interior of the system casing into an upper space and a lower space such that the liquid processing section and the process liquid storing section are respectively present inside the upper space and the lower space, the supply pipe, the drain pipe, and the exhaust pipe respectively include horizontal pipe portions gathered inside the common piping box and horizontally extending in parallel with each other along an array direction of the liquid processing units over all of the liquid processing units, a box exhaust pipe is connected to the common piping box to exhaust gas from around the horizontal pipe portions inside the common piping box through the box exhaust pipe, each of the liquid processing units is provided with a supply conduit, a drain conduit, and an exhaust conduit, which extend downward and respectively connect the liquid processing unit to the horizontal pipe portions of the supply pipe, the drain pipe, and the exhaust pipe, the lower space includes a vertical pipe area present at an end of the process liquid storing section, and the supply pipe includes a delivery pipe portion for delivering the process liquid from the process liquid storing section, the delivery pipe portion extending upward inside the vertical pipe area and connecting the process liquid storing section to the horizontal pipe portion of the supply pipe.