Patent ID: 8513066
Filing Date: 2013-08-20
Classification: H01L

Abstract:
1. A method for creating an inverse T field effect transistor, comprising: creating a horizontal semiconductor region and a vertical active region on a substrate, wherein the horizontal semiconductor region is on a top surface of a substrate, wherein the top surface of the substrate is an electrical insulator; forming a sidewall spacer on a first side of the vertical active region and over a first part of the horizontal semiconductor region adjacent to the first side and leave an exposed first portion of the horizontal semiconductor region adjacent to the first part, and on a second side of the vertical active region and over a second part of the horizontal semiconductor region adjacent to the second side and leave an exposed second portion of the horizontal active region adjacent to the second part, wherein the first part is a first horizontal active region and the second part is a second horizontal active region; etching away the first portion and the second portion of the horizontal active region through to the top surface of the substrate to leave the first horizontal active region and the second horizontal active region; removing the sidewall spacer; forming a gate dielectric over the first horizontal active region, the second horizontal active region, and at least a first part of the vertical active region; forming a gate electrode over the gate dielectric; and forming a source region and a drain region in portions of the first and second horizontal active regions and the vertical active region.