Patent ID: 9244354
Filing Date: 2016-01-26
CPC Classification: G03F

Claim Text:
1. A method for producing a thick film photoresist pattern, comprising: laminating a thick photoresist layer comprising a chemically amplified positive-type photoresist composition for thick film on a support; irradiating the thick photoresist layer with an active ray or radiation; and developing the thick photoresist layer following the irradiating to obtain a thick film resist pattern; wherein: in the above general formulae (b5) and (b6), R 10b to R 14b each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a fluorine atom, or a linear or branched fluorinated alkyl group having 1 to 6 carbon atoms (in which, R 11b is not a hydrogen atom); X b and the neighboring carbon atoms form a hydrocarbon ring having 5 to 20 carbon atoms; Y b represents an alicyclic group or alkyl group that may have a substituent; and p represents an integer of 0 to 4; and the organic solvent (S) comprises 3-methoxybutyl acetate, in an amount of no less than 40% by mass with respect to total mass of the organic solvent.