Patent ID: 8893650

Claim:
A substrate treatment apparatus configured such that substrates in a same lot taken out of a carrier are distributed by a delivery mechanism into a plurality of unit blocks for performing a same series of treatments, each unit block comprising a solution treatment module for supplying a treatment solution to a substrate, an ultraviolet irradiation module for irradiating a substrate with an ultraviolet ray, and a substrate carrying mechanism for carrying a substrate between the modules, the apparatus comprising: an illuminance detection part that detects an illuminance of a light source of the ultraviolet irradiation module; and a control part configured to, when an illuminance detection value of the ultraviolet irradiation module in one unit block among the plurality of unit blocks becomes a set value or less: determine an irradiation time adjusted to a length based on the illuminance detection value that was detected by the illuminance detection part and based on an operating life of the light source, control the delivery mechanism to stop delivery of a substrate to the one unit block and deliver subsequent substrates to another unit block, and control the ultraviolet irradiation module to perform irradiation on substrates which have already been delivered to the one unit block with the irradiation time that is adjusted.