Patent ID: 7714318

Claim:
An electronic device comprising: a first transistor structure of a first conductivity type including a first active region having a first edge that extends substantially along a first channel length direction; a second transistor structure of the first conductive type including a second active region having a first edge that extends substantially along a second channel length direction; a portion of a field isolation region lying between the first and second active regions; and a first portion of a first layer of a first stress type overlying the portion of the field isolation region, wherein: the first portion of the first layer is not a sidewall spacer; the first portion of the first layer has a first edge and a second edge opposite the first edge; the first edge of the first portion of the first layer lies closer to the first edge of the first active region as compared to the first edge of the second active region; and the second edge of the first portion of the first layer lies closer to the first edge of the second active region as compared to the first edge of the first active region.