Patent ID: 6419408
Filing Date: 2002-07-16
Classification: G03D

Abstract:
A unit for supplying developing solution to a front surface of a substrate, comprising:a first supplying path that supplies a developing solution, the developing solution being adapted to developing a positive resist; a second supplying path that supplies pure water; a mixing portion connected to said first supplying path and second supplying path, the mixing portion being configured to mix the developing solution supplied from the first supplying path and the pure water supplied from the second supplying path, thereby to make a mixture of the developing solution and the pure water; and a spraying portion that sprays the mixture to the substrate; a supplying head, disposed above the substrate, having said mixing portion and said spraying portion; wherein said supplying head has: a developing solution reservoir portion that temporarily reserves developing solution supplied from said first supplying path; and a pure water reservoir portion for that temporarily reserving reserves pure water supplied from said second supplying path.