Patent ID: 7847370
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate having a main surface; a trench region formed in the main surface of the semiconductor substrate; an insulating layer covering an inner surface of the trench region and the main surface of the semiconductor substrate; a resistor formed on the insulating layer so as to extend from within the trench region onto the main surface of the semiconductor substrate; a first oxide film embedded in the trench region so as to be flush with an upper surface of the resistor; a fuse element formed on the first oxide film so as to overlie the resistor; a second oxide film formed so as to cover the fuse element, the first oxide film, and the resistor; and an interconnect layer formed on the second oxide film to be electrically connected with the resistor and the fuse element via a plug.