Patent ID: 7721417
Filing Date: 2010-05-25
Classification: H01C,H01L,Y10T

Abstract:
1. A method of manufacturing a semiconductor device having a thin film resistor, the method comprising the steps of: providing (i) a first thin film resistor only for evaluation of a laser trimming process, and (ii) a second thin film resistor as the thin film resistor of the semiconductor device; laser trimming the first thin film resistor by creating a trim cut that bisects the first thin film resistor such that the first thin film resistor is divided into a first portion and a second portion; measuring insulation resistance of the first thin film resistor; evaluating the trim cut based on the measured insulation resistance in order to determine an appropriate laser trimming parameter for the second thin film resistor; and laser trimming the second thin film resistor by using the laser trimming parameter determined in the evaluating step.