Patent ID: 8318558
Filing Date: 2012-11-27
Classification: H01L

Abstract:
1. A method for forming a semiconductor device comprising: forming first, second, and third silicon line patterns by etching a semiconductor substrate, wherein the first, second, and third silicon line patterns are arranged along a first direction, wherein each of the first, second, and third silicon line patterns extend along a second direction; forming a first bit line and a second bit line between the first and the second silicon line patterns and between the second and the third silicon line patterns, wherein the first and the second bit lines each extend along the second direction; forming a first junction region in a first sidewall of the second silicon line pattern to be in contact with a first side of the first bit line, and forming a second junction region in a first sidewall of the third silicon line pattern to be in contact with a first side of the second bit line, wherein the first and the second junction regions are arranged along a third direction extending diagonally between the first and the second directions; forming first, second, and third vertical pillars by etching upper portions of the first, the second, and the third silicon line patterns along the first direction; and forming a gate coupled to the first, the second, and the third vertical pillars and extending along the first direction, wherein the first and the second junction regions are formed in island types.