Invention Grant
US08329515B2 eFUSE enablement with thin polysilicon or amorphous-silicon gate-stack for HKMG CMOS 有权
使用薄多晶硅的eFUSE实现或用于HKMG CMOS的非晶硅栅极叠层

eFUSE enablement with thin polysilicon or amorphous-silicon gate-stack for HKMG CMOS
Abstract:
An eFUSE is formed with a gate stack including a layer of embedded silicon germanium (eSiGe) on the polysilicon. An embodiment includes forming a shallow trench isolation (STI) region in a substrate, forming a first gate stack on the substrate for a PMOS device, forming a second gate stack on an STI region for an eFUSE, forming first embedded silicon germanium (eSiGe) on the substrate on first and second sides of the first gate stack, and forming second eSiGe on the second gate stack. The addition of eSiGe to the eFUSE gate stack increases the distance between the eFUSE debris zone and an underlying metal gate, thereby preventing potential shorting.
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