Patent ID: 8896053
Filing Date: 2014-11-25
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a first gate electrode formed to an upper portion of the semiconductor substrate; a second gate electrode formed on one of sidewalls of the first gate electrode and extended on the semiconductor substrate with the first gate electrode; an insulating film formed between the second gate electrode and the semiconductor substrate, and between the first gate electrode and the second gate electrode, the insulating film including a charge storage portion inside; and an interlayer insulating film formed on the semiconductor substrate to cover the first gate electrode and the second gate electrode, wherein the second gate electrode includes a first contact portion extended in a direction to be away from the first gate electrode from a position adjacent to the one of the sidewalls of the first gate electrode, wherein a first contact hole is formed to the interlayer insulating film above the first contact portion of the second gate electrode, and a first conductor portion buried in the first contact hole and the first contact portion of the second gate electrode are electrically connected, and wherein the first contact portion does not run over the first gate electrode, wherein the second gate electrode does not have a portion positioned above the first gate electrode.