Patent ID: 7091548
Filing Date: 2006-08-15
Classification: H01L

Abstract:
1. An analog capacitor comprising: a) a lower capacitor electrode; b) an upper capacitor electrode facing the lower capacitor electrode, wherein the lower capacitor electrode is at least one first conductive layer and the upper capacitor electrode is at least one second conductive layer, wherein each of the first and second conductive layers comprises a material selected from the group consisting of titanium (Ti), titanium nitride (TiN), tantalum (Ta), tantalum nitride (TaN), aluminum (Al), copper (Cu), tungsten (W), tungsten nitride (WN), iridium (Ir), iridium oxide (IrO c) at least three high-k dielectric layers interposed between the lower capacitor electrode and the upper capacitor electrode, the at least three high-k dielectric layers comprising: