Patent ID: 6972440
Filing Date: 2005-12-06
Classification: H01L

Abstract:
1. An enhanced T-gate comprising: a free T-gate, said free T-gate having a neck portion, said neck portion having a height, and a T-bar portion, said T-bar portion having overhangs extending beyond said neck portion by a first width; and an insulator layer disposed on each side of said neck portion, forming a sandwich structure with said neck portion along a width direction of said free T-gate, and wherein said insulator layer only partially filling up a volume defined therebetween said overhangs and a surface on which said free T-gate is standing, wherein in said sandwich structure said insulator layer having approximately a C-shape, conformally adhering to a bottom surface of said overhangs, to said neck portion, and to said surface on wich said free T-gate is standing, said insulator layer having a thickness which is less than half of said height of said neck portion, wherein said insulator layer covering said surface on which said free T-gate is standing and said bottom surface of said overhang to a distance from said neck portion substantially equal to said first width, whereby that part of said volume which is inside said C-shape is not filled by said insulator layer.