Patent ID: 7696601

Claim:
A semiconductor device comprising: a first device separating structure configured to define a first active region; a second device separating structure configured to define an epitaxial semiconductor region epitaxially grown from a side surface of an upper portion of the first active region, wherein the second device separating structure and the epitaxial semiconductor region are formed over the first device separating structure; a line-type barrier film extended along a first major direction of the semiconductor device; and a recess gate formed in a recess defined in the first active region along a second major direction of the semiconductor device perpendicular to the first major direction, wherein at least a portion of the line-type barrier film is formed inside the epitaxial semiconductor region, so as to divide the epitaxial semiconductor region into two separated second active regions; and, wherein the first and second active regions and the line-type barrier film form a top surface that is substantially planarized.