Jsr Corporation

Hideki Chiba

Hozumi Sato

Toshiyuki Ota

Katsutoshi Igarashi

Kazuaki Niwa

Kimiyasu Sano

Masako Suzuki

Yoshiyuki Michino

A radiation sensitive resin composition comprising an alkali-soluble resin such as a polyvinyl phenol or a phenol resin other than a polyvinyl phenol having a weight average molecular weight of 2,000 or higher, a cross-linking agent such as an amino resin having two or more active methylol groups in a molecule, a particulate rubbery material comprising a cross-linked polymer chemically modified with an epoxy compound, a liquid rubbery material having a number average molecular weight between 1,000 and 10,000 and a glass transition temperature of -20.degree. C. or lower, and a radiation polymerization initiator. The composition is best suited for use as a material for preparing an insulating layer interposed between two layers of conductive wiring that are arranged in an overlaying stack.

Radiation sensitive resin composition

A radiation sensitive resin composition comprising:

Radiation sensitive resin composition and material for forming bumps

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Tokyo, Japan

Hideki Chiba