Patent ID: 7358135

Claim:
A method of forming a resistor of a flash memory device, the method comprising: etching an isolation structure provided on a semiconductor substrate to form a first trench; forming a polysilicon structure within the first trench of the isolation structure; forming a dielectric layer over the polysilicon structure; forming a polysilicon layer over the dielectric layer; etching the polysilicon layer to define second and third trenches in the polysilicion layer, the second and third trenches separating the polysilicon layer into first, second, and third sections, the first and third section contacting the polysilicon structure, the second section being separated from the first and third sections; and forming an insulating film over the etched polysilicion layer, the insulating film filling the second and third trenches, wherein the first section of the polysilicon layer, the polysilicon structure, and the third section of the polysilicon layer define a resistor.