Patent ID: 7026199
Filing Date: 2006-04-11
Classification: H01L

Abstract:
1. A method for manufacturing transistor of semiconductor device, the method comprising the steps of: (a) forming a trench type device isolation film defining a I-type active region on a semiconductor substrate having a stacked structure of a pad oxide film, a pad nitride film thereon; (b) etching a predetermined thickness of the device isolation film to form a silicon fin extruding above the device isolation film; (c) tilt implanting an impurity on a sidewall of the silicon fin to form a channel region; (d) forming a gate oxide film on the sidewall of the silicon fin; (e) forming a planarized polysilicon layer for gate electrode on the semiconductor substrate; (f) patterning the polysilicon layer and the pad nitride film to form a gate electrode; (g) forming a lower insulating film including a landing plug contact hole exposing a portion of the pad oxide film and a portion of the gate oxide film; (h) performing an ion implant process to form an impurity implanted region at a bottom of the landing plug contact hole; (i) etching the exposed portion of the pad oxide film to expose the silicon fin; and (j) forming a landing plug filling the landing plug contact hole.