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TOKYO OHKA KOGYO., LTD.

TOKYO OHKA KOGYO., LTD. Patent applications
Patent application numberTitlePublished
20090258313RESIST COMPOSITION AND RESIST PATTERN FORMING METHOD - The present invention provides a resist composition prepared by dissolving components in an organic solvent containing ethyl lactate, which suppresses deterioration of sensitivity with time and also has required lithographic characteristics, and a method for forming a resist pattern. The resist composition is prepared by dissolving a resin component (A) which exhibits changeable alkali solubility under an action of an acid, an acid generator component (B) which generates an acid upon exposure, an amine (D) and acetic acid in an organic solvent (S) containing ethyl lactate.10-15-2009