Patent ID: 8071160
Filing Date: 2011-12-06
Classification: H01L,H05K,Y10T

Abstract:
1. A method of forming an anti-wetting protective layer having a durability in the range of approximately 10 to 500 microNewtons, a root mean square surface roughness in the range of approximately 25 to 500 nm, and a film coverage in the range of approximately 25 percent to 60 percent on a surface of a substrate, the method comprising: placing the substrate in a vacuum deposition chamber; producing nanoparticles in contact with the surface of the substrate with a chemical reaction between a first species and a second species at the substrate surface, wherein the first species arises from a preselected amount of a first gaseous substance injected into the chamber in a first preselected time interval, and the second species arises from a preselected amount of a second different gaseous substance injected into the chamber in a second preselected time interval occurring later than the first predetermined time interval; attaching the nanoparticles to each other and to the surface of the substrate with linker molecules arising from a gaseous linker chemistry injected into the chamber during a third preselected time interval occurring later than the second predetermined time interval; and disposing a low surface energy coating having a thermodynamic surface energy less than 70 dynes per square centimeter over the linker molecules; wherein the substrate comprises a first electrical connector under the protective film and the protective film is operable to be penetrated by a mating electrical connector to form a low resistance electrical connection between the mating electrical connector and the first electrical connector covered by the protective film.