Patent ID: 7473461

Claim:
A film stack, comprising: a substrate having a surface and a given material exposed at said surface; a first thin film including a first polymer contacting said given material at said surface of said substrate; and a second thin film including a second polymer other than said first polymer, said second thin film having an inner surface contacting said first thin film, said second thin film being substantially free of dewetting defects when in liquid phase and said second thin film consisting essentially of a material having a dielectric constant k higher than about four times the dielectric constant of free space, wherein said second thin film has a subminimum thickness being smaller than a reference thickness at which said second thin film would begin to dewet when in liquid phase if said second thin film directly contacted said surface due to long range van der Waals attractive force between said given material and a medium to which said second thin film is exposed and said first thin film has a negative value Hamaker constant relative to said substrate so as reduce said long range van der Waals attractive force, thereby avoiding said subminimum thickness second thin film from beginning to dewet.