Structure and method of applying localized stresses to the...

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257SE27062

Reexamination Certificate

active

07414293

ABSTRACT:
A semiconductor device has an n channel conductivity type field effect transistor having a channel formation region formed in a first region on one main surface of a semiconductor substrate and a p channel conductivity type field effect transistor having a channel formation region formed in a second region on the main surface of the semiconductor substrate, which second region is different from the first region. An internal stress generated in the channel formation region of the n channel conductivity type field effect transistor is different from an internal stress generated in the channel formation region of the p channel conductivity type field effect transistor. The internal stress generated in the channel formation region of the n channel conductivity type field effect transistor is a tensile stress, while the internal stress generated in the channel formation region of the p channel conductivity type field effect transistor is a compressive stress.

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