Patent ID: 6791135
Filing Date: 2004-09-14
Classification: H01L,Y10S

Abstract:
A semiconductor device including:at least a digital circuit including at least a first capacitive element of metal-insulator-metal structure, which further comprises a first bottom electrode layer, a first capacitive insulation layer and a first top electrode layer; and at least an analogue circuit including at least a second capacitive element of metal-insulator-metal structure, which further comprises a second bottom electrode layer, a second capacitive insulation layer and a second top electrode layer, wherein said first and second bottom electrode layers respectively comprise separated two parts derived from a first common metal layer, wherein said first and second capacitive insulation layers respectively comprise separated two parts derived from a common insulation layer, wherein said first and second top electrode layers respectively comprise separated two parts derived from a second common metal layer, wherein said second bottom electrode of said second capacitor is electrically connected with at least a first contact in a first inter-layer insulator which underlies said second bottom electrode, wherein said second top electrode of said second capacitor is electrically connected with at least a second contact in a second inter-layer insulator which overlies said second top electrode, wherein said first capacitive element comprises a three-dimensional-structured capacitor, and said second capacitive element comprises a planar-structured capacitor, wherein said three-dimensional-structured capacitor is provided in a groove formed in said first inter-layer insulator, wherein said first and second bottom electrode layers are identical with each other in material and thickness, wherein said first and second capacitive insulation layers are identical with each other in material and thickness, wherein said first and second top electrode layers are identical with each other in material and thickness, and wherein a portion of the first and second top electrodes are substantially coplanar.