Patent ID: 7997813
Filing Date: 2011-08-16
Classification: H01L

Abstract:
1. A coating and developing system, for forming films including a resist film on a substrate carried in a carrier delivered to a carrier block by film forming unit blocks, carrying the substrate through an interface block to an exposure system, processing the substrate processed by an exposure process and returned from the exposure system through the interface block by a developing process, transferring the substrate processed by the developing process to the carrier block, each of film forming unit blocks and developing unit blocks including a wet-processing module for applying a chemical solution to a substrate, a heating module for heating a substrate, a cooling module for cooling a substrate, substrate carrying means for carrying a substrate to and from those modules in the unit block, said coating and developing system comprising: a processing station provided with at least two processing blocks of the same construction each built by stacking up a plurality of unit blocks including a film forming unit block and a developing unit block, arranged longitudinally contiguously between the carrier block on a front side and the interface block on a back side along a substrate carrying passage along which a substrate is carried backward from the carrier block toward the interface block; transfer unit blocks disposed in the processing blocks, respectively, on the front side of the unit blocks, each built by stacking up, in layers, transfer units so as to correspond to the unit blocks, respectively, to transfer a substrate from one to another of the unit blocks therethrough by transferring a substrate to and receiving a substrate from substrate carrying means included in the unit blocks; vertically movable transfer arms installed in the processing blocks, respectively, to carry a substrate to and from the transfer units of the transfer unit blocks; first inlet and outlet transfer units, included in the transfer unit blocks, for transferring a substrate between the carrier block and the processing block or between the adjacent ones of the processing blocks, and capable of transferring a substrate to and receiving a substrate from the transfer arms, respectively, the first inlet and outlet transfer units being one of the transfer units, positioned at a first height of the transfer unit block; second inlet and outlet transfer units, included in the transfer unit blocks, for transferring a substrate between the carrier block and the processing block or between the adjacent ones of the processing blocks, and capable of transferring a substrate to and receiving a substrate from the transfer arms, respectively, the second inlet and outlet transfer units being one of the transfer units, positioned at a second height different from the first height, of the transfer unit block; and a first direct carrying device and a second direct carrying device, different from the first carrying device, installed in each of the processing blocks, wherein the first direct carrying device carries a substrate, which the films have been formed on and have not been processed by the exposure process, from the first inlet and outlet transfer unit of the processing block to that of the processing block behind and adjacent to the former processing block or to the interface block, and the second direct carrying device carries a substrate processed by the exposure process, from the second inlet and outlet transfer unit of the processing block to that of the processing block in front of and adjacent to the former processing block or from the interface block to the second inlet and outlet transfer unit of the processing block on the most back side, and the second direct carrying device carries a substrate, on which the films have not been formed, from the second inlet and outlet transfer unit of the processing block to that of the processing block behind and adjacent to the former processing block.