Imprint Chuck Lever Control for Large-Wafer Gap Precision

The chuck is divided into multiple independently controllable segments or zones, each with its own actuators. This allows local adjustment of different regions of the chuck to compensate for warping and maintain stiffness across the entire large surface area, resolving the contradiction between increased processing area and maintained structural rigidity.

The chuck and groove plate incorporate dynamically adjustable components with multiple degrees of freedom, allowing real-time adjustment of position and orientation. This dynamic capability enables the system to compensate for thermal expansion and mechanical warping, maintaining precise imprint gap control across large wafer areas despite changes in environmental conditions.

The manipulator system incorporates multiple degrees of freedom including vertical translation, horizontal positioning, and rotational adjustments. By adding these additional dimensional controls, the system achieves precise imprint gap control and wafer alignment that cannot be obtained with simple single-component manipulators, resolving the trade-off between structural simplicity and control precision.

Lever arrangements and flexure pivots are introduced as intermediary mechanical elements between the actuators and the chuck/groove plate. These intermediaries amplify actuator movements, provide mechanical advantage, and enable fine adjustments of the imprint gap, thereby achieving high precision control without requiring excessively complex direct-drive mechanisms.

Heating and cooling channels are distributed locally across the chuck surface rather than relying on bulk thermal conduction. This allows different regions of the large chuck to be heated or cooled independently and simultaneously, significantly reducing the overall thermal processing time while maintaining the capacity to handle large 300 mm wafers.

Fluid-based heating and cooling channels are integrated into the chuck structure, enabling rapid thermal transfer through direct contact with the wafer backside. This hydraulic/ pneumatic thermal management system provides much faster heating and cooling rates compared to conventional conduction methods, allowing large wafers to be processed efficiently without excessive thermal processing times.