Patent ID: 7968468
Filing Date: 2011-06-28
Classification: H01L

Abstract:
1. A substrate treatment method for forming a coating film on a substrate with projections and depressions on a front surface thereof, comprising: a first coating step of supplying a coating solution to the substrate with projections and depressions on the front surface thereof to form a coating film on the front surface of the substrate; a first drying step of heating the substrate having the coating film formed thereon to adjust an etching condition of the coating film; an etching step of supplying an etching solution for etching the coating film formed on the substrate to etch the coating film; a second coating step of supplying the coating solution to the substrate to form a flat coating film on the front surface of the substrate; and after said second coating step, a second drying step of heating the substrate to cure the coating film, wherein, when said first coating step, first drying step, etching step, second coating step, and second drying step are repeatedly performed, a plurality of the substrates for which treatments for the first time have been finished are temporarily housed in a buffer unit in sequence, and after said first coating step for the last substrate in a lot is finished, treatments for the second time for the substrates sequentially carried out of the buffer unit are started.