Tokyo Ohka Kogyo Co., Ltd.

Mitsuro Sato

Fumitake Kaneko

Kiyoshi Ishikawa

Katsumi Oomori

Etsuko Iguchi

Yoshiki Sugeta

The present invention provides a chemical-amplification-type negative resist composition containing an alkali-soluble resin, a compound capable of generating an acid by irradiation and a crosslinking agent, and the resist composition of the present invention is characterized in that it further contains an organic carboxylic acid compound as an acidic compound and an organic amine compound as an alkaline compound. According to the content of such acidic and alkaline compounds, the negative resist composition achieves a negative resist pattern exhibiting improved definition and an excellent profile with a reduced dependency on the type of substrate as well as a minimized change in the sensitivety and film thickness with the passage of time and a satisfactory PEG margin, and therefore, the negative resist composition of the present invention can be used in the field of manufacturing electronic parts such as semiconductor devices and liquid-crystal display devices, where finer and more precise processing is increasingly required.

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Hillsboro, OR, United States of America

Mitsuro Sato