Patent ID: 7094654
Filing Date: 2006-08-22
Classification: H01L

Abstract:
1. A method of manufacturing an electronic device including a thin film transistor, comprising the steps of: (a) forming a semiconductor film over an insulating substrate; (b) depositing a first masking layer over the semiconductor film and removing portions thereof to form a plurality of holes therethrough which extend substantially perpendicularly from the upper to the lower surface thereof; (c) patterning the first masking layer in a first pattern; (d) depositing a second masking layer over the first masking layer; (e) patterning the second masking layer to define a second pattern that lies within the area of the first pattern; and (f) performing an implantation in the semiconductor film using at least the first masking layer as an implantation mask to define source and drain regions, an undoped conduction channel between the source and drain regions, and a field-relief region having a lower doping concentration than the drain region between the conduction channel and the drain region.