• dynamic performance, while the granite base provides excellent stability and vibration damping properties. The stage surface is coated with a special material to reduce friction and wear.
• Dimensions: The overall dimensions of the wafer stage are [L] millimeters in length, [W] millimeters in width, and [H] millimeters in height. The wafer mounting area has a diameter that can accommodate wafers up to [D] millimeters in size.
• Motion Range: It can move in multiple axes, including linear motion along the X, Y, and Z axes. The X – axis and Y – axis have a travel range of [X_range] millimeters and [Y_range] millimeters respectively, with a maximum linear speed of [X_speed] millimeters per second and [Y_speed] millimeters per second. The Z – axis has a travel range of [Z_range] millimeters, mainly used for focus adjustment during lithography or inspection processes. It also has rotational capabilities around the Z – axis with a maximum angular speed of [Rot_speed] degrees per second.
• Positioning Accuracy: Achieves sub – micrometer positioning accuracy in all axes. The X – axis and Y – axis have a positioning accuracy of ±[X_acc] micrometers, and the Z – axis has a positioning accuracy of ±[Z_acc] micrometers. The rotational positioning accuracy around the Z – axis is ±[Rot_acc] arc – seconds.

Functional Features:

• Vibration Isolation: Incorporates an advanced vibration isolation system that consists of air springs or active vibration isolation devices. This system effectively isolates the wafer stage from external vibrations, such as those generated by the equipment’s own motion or nearby machinery, ensuring stable and accurate positioning during processing.
• Thermal Stability: The stage is designed with thermal compensation mechanisms to minimize the impact of temperature variations on its dimensional accuracy. It uses temperature – sensitive sensors and heating/cooling elements to maintain a constant temperature across the stage surface, reducing thermal expansion or contraction effects.
• High – Speed and High – Acceleration Motion: The stage is capable of high – speed and high – acceleration motion, which is essential for improving the throughput of semiconductor manufacturing equipment. The advanced servo control system and low – friction design enable smooth and rapid movement of the wafer without sacrificing positioning accuracy.
• Easy Wafer Loading and Unloading: The stage is equipped with a user – friendly wafer loading and unloading mechanism. It can automatically align the wafer during loading to ensure that it is placed in the correct position on the stage. The unloading process is also quick and efficient, reducing the overall cycle time of the manufacturing process.

Application Scenarios:

• Lithography Equipment: In photolithography, the wafer stage is responsible for precisely positioning the wafer under the exposure mask. It moves the wafer in a step – and – repeat or scanning motion to expose different areas of the wafer with high – resolution patterns. The high – precision positioning and motion control of the stage are crucial for achieving accurate pattern transfer and high – yield semiconductor devices.
• Wafer Inspection Systems: During wafer inspection, the stage moves the wafer to different positions so that the inspection optics can capture images of the entire wafer surface. The ability to move the wafer accurately and quickly allows for efficient detection of defects on the wafer, improving the quality control of the manufacturing process.
• Metrology Equipment: In metrology applications, the wafer stage positions the wafer for precise measurements of features such as line widths, pitch, and overlay accuracy. The high – precision positioning ensures that the measurements are accurate and reliable, providing valuable feedback for process optimization and quality assurance.