摘要:
A lithographic apparatus is disclosed. The apparatus includes an illumination system to provide a beam of radiation, an article support to support an article to be placed in a beam path of the beam of radiation, and a clamp to clamp the article to the article support. The clamp is provided with a plurality of zones located around a circumference of the article support to create a locally adjusted pressure so as to provide a local bending moment to locally bend the article.
摘要:
In a lithographic apparatus, a localized area of the substrate surface under a projection system is immersed in liquid. The height of a liquid supply system above the surface of the substrate can be varied using actuators. A control system uses feedforward or feedback control with input of the surface height of the substrate to maintain the liquid supply system at a predetermined height above the surface of the substrate.
摘要:
An immersion lithographic apparatus includes a liquid supply system member configured to contain a liquid in a space between a projection system of the lithographic apparatus and the substrate and a liquid supply system member compensator arranged to compensate an interaction between the liquid supply system member and substrate table.
摘要:
A positioning device for positioning an object within a lithographic apparatus, including a support structure for supporting the object, at least two short-stroke units, each connected to the support structure, and a long-stroke unit. In the arrangement, each of the short-stroke units includes a short-stroke actuator system configured to provide independently at least one actuation force between the short-stroke unit and the long-stroke unit, and the long-stroke unit includes a long-stroke actuator system configured to provide at least one actuation force between the long-stroke unit and a reference structure of the lithographic apparatus.
摘要:
A positioning system for controlling a relative position between a first component and a second component of a lithographic apparatus, wherein a position of each component is defined by a set of orthogonal coordinates, the positioning system including: a measuring device configured to determine an error in the momentary position of one of the components with respect to a setpoint position in a measurement coordinate; and a controller configured to control movement of the other component in a control coordinate based on the determined error; wherein the measurement coordinate is different from the control coordinate.
摘要:
A measurement system is configured to derive a position quantity of an object, the measurement system includes at least one position quantity sensor configured to provide respective position quantity measurement signals; a position quantity calculator configured to determine a position quantity of the object from the position quantity measurement signal, wherein the position quantity calculator includes a torsion estimator configured to estimate a torsion of the object, the position quantity calculator being configured to correct the determined position quantity of the object for the estimated torsion.
摘要:
An immersion lithographic apparatus includes a liquid supply system member configured to contain a liquid in a space between a projection system of the lithographic apparatus and the substrate and a liquid supply system member compensator arranged to compensate an interaction between the liquid supply system member and substrate table.
摘要:
A positioning device for positioning an object table includes a frame for supporting the object table in a first direction and a motor constructed and arranged to exert a first force on the object table in a second direction substantially perpendicular to the first direction and a second force on the object table in a third direction substantially perpendicular to the first direction and the second direction. A first part of the motor is constructed and arranged to co-operate with a second part for generating the first and second force. The first part is arranged on the object table, such that both the first force and the second force are directed substantially through the center of gravity of the object table.
摘要:
In a lithographic apparatus, a localized area of the substrate surface under a projection system is immersed in liquid. The height of a liquid supply system above the surface of the substrate can be varied using actuators. A control system uses feedforward or feedback control with input of the surface height of the substrate to maintain the liquid supply system at a predetermined height above the surface of the substrate.
摘要:
A control system configured to control a position of a fluid supply system, the fluid supply system constructed and arranged to supply a fluid between a substrate and a projection system, the substrate positioned with a substrate stage, the control system including a controller configured to determine a desired position of the fluid supply system based on a position signal to be provided to the substrate stage and a position offset, the position offset added to the position signal to be provided to the substrate stage.