A method to form both high and low-k materials over the same dielectric region, and their application in mixed mode circuits

摘要

A new method of provided for forming in one plane layers of insulating material having both high and low dielectric constants. Layers, having selected and preferably non-identical parameters of dielectric constants, are successively deposited interspersed with layers of etch stop material. The layers can be etched, creating openings there-through that can be filled with a layer of choice.