Patent ID: 6967407

Claim:
A semiconductor device comprising a wiring layer and an interlayer insulating film layer, characterized in that the interlayer insulating film layer comprises a first insulating layer composed of an organic insulating film having a relative dielectric constant of 3.5 or less as a lower layer and a second insulating layer composed of an organometallic polymer having a relative dielectric constant of less than 4.0 laid thereon as an upper layer, wherein the organometallic polymer is a ladder silicone-based polymer and the ladder silicone-based polymer is a polymer material having a molecular structure represented by the following formulas (I) or (II): wherein R is an alkali-soluble group-containing organic group represented by the formula: in which m is an integer of 1-3; R″ is a hydroxyl group: and a is an integer of 1-3; and n is a positive number of 2 or more for the repeating unit; wherein R′ is an organic group represented by the formula: in which R′″ is an alkoxy group having 1 to 3 carbon atoms; and m and n are as defined above.