Patent ID: 7602048

Claim:
A semiconductor device, comprising: a multi-layered insulation film formed on a semiconductor substrate, said multi-layered insulation film comprising: a methyl silsequioxane (MSQ) layer; a methylated hydrogen silsesquioxane (MHSQ) layer formed on and being in contact with said MSQ layer; and an inorganic insulation layer formed on and being in contact with said MSHQ layer and comprising a member selected from the group consisting of silicon oxide, silicon nitride and silicon oxynitride, said inorganic insulation layer comprising an uppermost layer of said multi-layered insulation film, such that said MHSQ layer inhibits a peeling away of said inorganic insulation layer; and a plurality of wires which are formed in grooves formed in said multi-layered insulation film, said MSQ layer, MHSQ layer and inorganic insulation layer of said multi-layered insulation film filling a space between said wires, wherein said methylated hydrogen silsesquioxane (MHSQ) layer includes methylated hydrogen silsesquioxane (MHSQ) having repeating units shown by formulae I, II and III wherein a molar ratio of II to a total of I, II and III is at least 0.5.