Patent ID: 7824980

Claim:
A method for manufacturing a semiconductor device comprising: forming a poly-gate having a first poly-gate portion and a second poly-gate portion over a semiconductor substrate; and then forming a photosensitive layer over the entire surface of the semiconductor substrate including the second poly-gate portion; and then forming photosensitive layer patterns to expose only the second poly-gate portion; and then forming a trench at a predetermined depth in the second poly-gate portion bar etching the poly-gate using the photosensitive layer patterns as etching masks; and then removing the photosensitive layer patterns; and then implanting dopant ions into the entire surface of the semiconductor substrate and the poly-gate including the trench; and then forming a contact barrier layer over the second poly-gate portion including the trench while exposing an upper surface of the first poly-gate portion; and then forming a contact over the exposed upper surface of the first poly-gate portion.