Patent ID: 7544579
Filing Date: 2009-06-09
Classification: H01L

Abstract:
1. A method for manufacturing a resistor protect layer to protect a thin film resistor in a semiconductor device of a type that comprises a thin film resistor mounted on a dielectric layer, said method comprising the steps of: forming a resistor protect layer over said thin film resistor, wherein the resistor protect layer includes a first surface in contact with said dielectric layer, a second surface opposing said first surface, and first and second sides extending between said first surface and said second surface; and applying an etch process to etch away portions of a first corner between said first side and said second surface of said resistor protect layer and a second corner between said second side and said second surface of said resistor protect layer to facet said first and second corners of said resistor protect layer, wherein said resistor protect layer prevents said etch process from contacting said thin film resistor.