Patent ID: 9741801
Date: 2017-08-22
CPC Classifications: H01L

Claim:
1. A method for producing a semiconductor device, the method comprising: depositing a first oxide film containing an impurity having a first conductivity type on a substrate; depositing a nitride film; depositing a second oxide film containing an impurity having a second conductivity type that differs from the first conductivity type; etching the first oxide film containing the impurity having a first conductivity type, the nitride film, and the second oxide film containing the impurity having the second conductivity type to form a contact hole; performing epitaxial growth in the contact hole to form a first pillar-shaped silicon layer; and removing the nitride film while leaving the first and second oxide films to expose a sidewall portion of the first pillar-shaped silicon layer and performing epitaxial growth to form an output terminal.