Lead-frame forming material.

摘要

Disclosed are i) a lead-frame forming material which contains a light-sensitive material comprising (1) a diazo salt light-sensitive resin and (2) a water-insoluble but alkaline water-soluble lipophilic high molecular weight compound, ii) a lead-frame forming material which contains a light-sensitive material comprising a photodimeric light-sensitive composition, and iii) a lead-frame forming material which contains a light-sensitive material comprising (1) a water-insoluble but alkaline water-soluble resin, (2) a compound capable of generating an acid by irradiation with active rays or radiant rays, and (3) a compound containing at least one crosslinkable group by the action of the acid.