Methods of manufacturing semiconductor devices and...

Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate

Reexamination Certificate

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C438S042000, C438S044000, C438S360000, C438S363000

Reexamination Certificate

active

07838372

ABSTRACT:
Methods of manufacturing semiconductor devices and structures thereof are disclosed. In one embodiment, a method of manufacturing a semiconductor device includes forming recesses in a first region and a second region of a workpiece. The first region of the workpiece is masked, and the recesses in the second region of the workpiece are filled with a first semiconductive material. The second region of the workpiece is masked, and the recesses in the first region of the workpiece are filled with a second semiconductive material.

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