Patent ID: 9041099
Filing Date: 2015-05-26
Classification: H01L

Abstract:
1. A single-sided access device, comprising: an active fin structure of a substrate, the active fin structure comprising a source region and a drain region, wherein the active fin structure has a longitudinal direction that is parallel to a top surface of the substrate; an insulating layer interposed between the source region and the drain region and embedded in the active fin structure; a trench isolation structure disposed at one side of the active fin structure; a sidewall gate electrode extending along the longitudinal direction on the other side of the active fin structure and being opposite to the trench isolation structure so that the active fin structure is sandwiched by trench isolation structure and the sidewall gate electrode; and a gate protrusion laterally and electrically extended from the sidewall gate electrode and embedded under the insulating layer between the source region and the drain region, wherein the gate protrusion penetrating through entire thickness of the active fin structure and is in direct contact with the trench isolation structure.