Patent ID: 11930594
Assignee: RESONAC CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. An interlayer insulating resin film containing an epoxy resin (A), a cyanate resin (B), dicyandiamide (C) and particulate inorganic filler (D),
wherein a content of the epoxy resin (A) in the interlayer insulating resin film is in a range from 5 parts to 30 parts by mass based on 100 parts by mass of non-volatile components contained in the interlayer insulating resin film; a content of the cyanate resin (B) in the interlayer insulating resin film is in a range from 2 to 50 parts by mass based on 100 parts by mass of non-volatile components contained in the interlayer insulating resin film, a content of the dicyandiamide (C) in the interlayer insulating resin film is in a range of 0.005 to 5.0 parts by mass based on a total of 100 parts by mass of the epoxy resin (A) and the cyanate resin (B) in terms of content of non-volatile components, a (blending amount of dicyandiamide (C)/active hydrogen equivalent of dicyandiamide (C))/(blending amount of epoxy resin (A)/epoxy equivalent of epoxy resin (A)) is in a range from 0.005 to 0.5, and a content of the particulate inorganic filler (D) is in a range from 150 to 500 parts by mass based on 100 parts by mass of resin components in the interlayer insulating resin film in terms of content of non-volatile components, and
wherein the particulate inorganic filler (D) is at least one filler selected from the group consisting of silica, alumina, barium sulfate, talc, clay, mica powder, aluminum hydroxide, magnesium hydroxide, calcium carbonate, magnesium carbonate, magnesium oxide, boron nitride, aluminum borate, barium titanate, strontium titanate, calcium titanate, bismuth titanate, titanium oxide, barium zirconate, and calcium zirconate.