Patent ID: 8912567
Filing Date: 2014-12-16
Classification: H01L

Abstract:
1. A strained channel transistor structure, comprising: a substrate; a source stressor region on the substrate and comprising a source extension stressor region; a drain stressor region on the substrate and comprising a drain extension stressor region; a strained channel region between the source extension stressor region and the drain extension stressor region, a width of said channel region being defined by adjacent ends of said extension stressor regions; a gate stack above the strained channel region; a spacer element in direct contact with the gate stack, a bottom surface of the spacer element covered by and in direct contact with the substrate, the source extension stressor region and the drain extension stressor region isolated from direct contact with the bottom surface of the spacer element by the substrate; and a final spacer on the spacer element and in direct contact with a raised source structure of the source stressor region and a raised drain structure of the drain stressor region, wherein the raised source structure and the raised drain structure protruding above the substrate.