Patent ID: 8860181
Filing Date: 2014-10-14
Classification: H01L

Abstract:
1. A thin film resistor structure, comprising: a substrate; a flat bottom ILD (inter layer dielectric) disposed on the substrate; a plurality of first contacts disposed in the bottom ILD, and each top surface of the first contacts is on the same level as a top surface of the bottom ILD; a flat top ILD disposed on the bottom ILD; a plurality of second contact disposed in the top ILD, and each top surface of the second contacts is on the same level as a top surface of the top ILD; a thin film resistor disposed between the bottom ILD and the top ILD; a stop layer disposed between the bottom ILD and the top ILD, the thin film resistor being disposed on the stop layer; and at least one second contact penetrating through the thin film resistor and touching the surface of the stop layer.