Salicide Process and LDD Structures The salicide process is a crucial step in the fabrication of CMOS (Complementary Metal Oxide Semiconductor) chips. I...
Salicide Process and LDD Structures
The salicide process is a crucial step in the fabrication of CMOS (Complementary Metal Oxide Semiconductor) chips. It involves the removal of metal features from the silicon wafer to create the interconnects between different circuit elements.
During the salicide process, the silicon wafer is placed in a development solution that selectively dissolves silicon-based materials while leaving the metal features untouched. This process is repeated multiple times to remove all the metal features from the wafer, creating the intricate circuitry that forms the CMOS chip.
LDD structures are a type of structure used in CMOS chips. They are formed by removing a portion of the silicon wafer to create a rectangular or square region. These structures are used to isolate different logic cells and control the flow of electricity between them.
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The salicide process is used in the production of integrated circuits, such as smartphones, computers, and medical devices.
LDD structures are commonly used in CMOS chips to create interconnects and control the behavior of different circuit elements.
In a simple CMOS chip, the salicide process is used to create the interconnects between the transistors, and the LDD structures are used to control the flow of electricity between the transistors