Patent ID: 7279367

Claim:
A method of semiconductor processing to form a thyristor memory device, comprising: forming a wordline over a layer of silicon, the silicon of a first-type conductivity; forming first dielectric over the wordline and the layer of silicon; patterning the first dielectric to define a salicide mask comprising a first part over at least a portion of the wordline, a second part contiguous with the first part and conformal to a sidewall of the wordline, and a third part contiguous with the second part as a shoulder that extends outwardly from the wordline and across a portion of the layer of silicon; implanting dopant of second-type conductivity in the layer of silicon using an angled implant relative to the surface of the silicon and in self-alignment with the mask; and after the implanting of the second-type conductivity dopant, implanting dopant of first-type conductivity in the layer of silicon using a substantially orthogonal implant angle and self-aligned with the salicide mask.