Patent ID: 8883593
Filing Date: 2014-11-11
Classification: H01L

Abstract:
1. A method of manufacturing a device, the method comprising: forming a semiconductor pillar having a first conductivity type protruding from a semiconductor substrate; forming a bottom diffusion layer having a second conductivity type in the semiconductor substrate around a bottom of the semiconductor pillar; forming a gate insulator film covering a side surface of the semiconductor pillar; forming a gate electrode covering the gate insulator film; and forming a top diffusion later having the second conductivity type at a top portion of the semiconductor pillar, the top diffusion layer including a semiconductor body is formed by an epitaxial growth which contains an impurity, wherein the forming the semiconductor pillar is to form a first semiconductor pillar and a second semiconductor pillar, the first semiconductor pillar including an n-type impurity being disposed in an n-well region and the second semiconductor pillar including a p-type impurity being disposed in a p-well region; wherein the forming the bottom diffusion layer further comprises: wherein the forming the top diffusion layer further comprises: