Patent ID: 6046080
Filing Date: 2000-04-04
Classification: H01L

Abstract:
A method of making a load resistor of a static random access memory on a dielectric layer of a semiconductor wafer comprising:depositing a poly-silicon layer on the dielectric layer;depositing a silicon-oxy-nitride (SiO.sub.X N.sub.Y) layer on the poly-silicon layer;performing a photolithographic process to define an area for making the load resistor; andperforming an etching process to remove the silicon-oxy-nitride layer and the poly-silicon layer in all areas except for the area of the load resistor so as to form the load resistor;wherein the poly-silicon layer of the load resistor is used as a conductive resistance layer, and the silicon-oxy-nitride layer of the load resistor is used as a radiation insulating layer for preventing radiation damages of the load resistor caused by plasma radiation in plasma processes to be performed later on.