Patent ID: 6255202
Filing Date: 2001-07-03
Classification: H01L

Abstract:
A method for fabricating a T-gate structure comprising the steps of:providing a silicon layer having a gate oxide layer, a polysilicon layer over the gate oxide layer and an insulating layer over the gate oxide layer;forming a photoresist layer over the insulating layer;forming an opening in the insulating layer extending from a top surface of the insulating layer to a first depth;forming spacers in the opening to reduce the size of the opening in the insulating layer;extending the opening in the insulating layer from the first depth to a second depth wherein the opening is wider from the top surface of the insulating layer to the first depth than the opening is from the first depth to the second depth;removing the spacers from the opening; andfilling the opening with a conductive material to form the T-gate structure.