Patent ID: 6277441
Filing Date: 2001-08-21
Classification: B05D,C03C,H01L

Abstract:
A method of forming a coating film by dropping application liquid on a surface of an object to be processed in the form of a plate having irregularities formed thereon and dispersing the application liquid on the surface of the object using a centrifugal force generated by rotating the object, comprising the steps of:rotating an object to be processed in the form of a plate in a first rotational action at a low speed for dispersing the application liquid on the surface of the object and in a second rotational action at a high speed for adjusting a thickness of the dispersed application liquid on the surface of the object, said first and second rotational actions being separated by a time interval; andsetting the time interval between the first and the second rotational actions to a value equal to or greater than ten times a duration of the first rotational action and setting a duration of the second rotational action to a value equal to or greater than three times the duration of the first rotational action.