Used NIKON i7 #9205849 for sale

NIKON i7 is a wafer stepper that is used in the semiconductor fabrication process. It is employed to pattern features on the wafer surface with extreme accuracy and size variations, making it an essential machine for mass production of intricate electronic components. NIKON I 7 features a series of precision optical components, such as lenses, prisms, and mirrors, as well as highly-sophisticated software designed to accurately detect the wafer features and precisely reproduce them with minimal amounts of variation. This ensures the repeatability and reliability of the production process. The machine features a highly efficient photolithographic technology comprising a full-field exposure module, a stepper unit, two flatness sensors, a flat dryer, and a post-exposure unit. The dryer is used to dry the wafer surface after exposure to the light energy, while the post-exposure unit performs the critical step of patterning the surface of the wafer. I7 can accommodate wafers measuring up to 200mm in diameter. Its advanced imaging equipment provides excellent throughput rate and precise line width control, allowing process engineers to deliver superior device yields. The machine also comes with a unique Defect Density Monitoring system (DDM) to optimize its processes and eliminate potential areas of defect formation. This unit automatically detects, records, and analyzes defects in a unit, allowing engineers to identify specific areas with abnormally high defect concentration and take the necessary steps to eliminate them. Furthermore, I 7 conforms to the OPC (Optical Proximity Correction) standards, which allow engineers to consistently achieve optimal lithographic performance in their production. By combining this function with the DDM machine, process engineers can ensure a high yield of quality components with consistent yields. Finally, NIKON i7 incorporates an auto-calibration tool to improve production accuracy and reduce errors to a minimum. This enables the machine to perform at its optimal point, improving both throughput rates and product yields over long periods of time.