摘要:
The present invention relates to a lithographic projection apparatus comprising a housing, which comprises therein a first exposure system that has at least one movable part, e.g. a movable first substrate holder, or a movable second substrate holder in a twin stage apparatus. The system is further provided with position disturbance correction system for correcting a position of the first substrate holder with respect to the patterned projection beam due to the influence of gas pressure differences or gas movements, caused by movements of the movable part. The invention also generally relates to a device manufacturing method comprising providing a lithographic projection apparatus according to the invention with a first substrate, and exposing said first substrate, wherein during said exposing of the first substrate a position thereof is corrected by means of position disturbance correction system.
摘要:
A lithographic apparatus includes a first movable element (such as an immersion liquid supply system), which is in operation in contact with a surface of a second movable element (such as a substrate table). Further, the lithographic apparatus includes a second element controller (such as a substrate table controller) to control a position quantity of the second movable element. Disturbance forces caused by, e.g., movements of the first and second movable elements with respect to each other, due to capillary forces disturb a position of the first and second movable elements. To at least partly correct a position of the second movable element due to such disturbance forces, the lithographic apparatus includes a feedforward control path to provide a disturbance force feedforward signal to the second element controller, the feedforward control path including a disturbance force estimator to estimate a disturbance force from a position quantity of the first movable element.
摘要:
A lithographic apparatus includes an illumination system to condition a radiation beam. A patterning support holds a patterning device that imparts the radiation beam with a pattern to form a patterned radiation beam. A substrate support holds a substrate. A projection system projects the patterned radiation beam onto the substrate. A positioning system positions the patterning support and the substrate support. The positioning system has a motor with a stator and a mover coupled to a support, and an associated motor control system with a controller providing an output for controlling currents applied to the motor. The motor control system determines a controller output required to compensate for a weight of mover and associated support, determines a deviation of this output from an output required to compensate the gravity force acting on the mover and associated support, and corrects the currents applied to the motor based on the deviation.
摘要:
A lithographic apparatus comprises a substrate table to hold a substrate and a projection system to project a patterned radiation beam onto a target portion of the substrate. The lithographic apparatus further comprises a fluid supply system to supply a fluid between the substrate and a final lens element of the projection system as well as a position controller to control a position of the fluid supply system. The position controller is configured to, being provided with a position quantity of the substrate, determine a desired position of the liquid supply system by adding a position offset to the position quantity of the substrate, and position the liquid supply system according to the desired position. The position quantity may comprise a position and/or rotational position of the substrate table and/or a height function of a substrate height.
摘要:
An exposure apparatus including a movable table, a member, movably separate from the table and located on a top surface of the table, to provide a surface substantially co-planar with a top surface of an object in or on the table, a projection system configured to project a radiation beam onto a radiation-sensitive target portion of a substrate, and a liquid supply system configured to provide a liquid to a space between the projection system and the object.
摘要:
Lithography apparatus and device manufacturing methods are disclosed in which means are provided for reducing the extent to which vibrations propagate between a first element of a projection system and a second element of a projection system. Approaches disclosed include the use of plural resilient members in series as part of a vibration isolation system, plural isolation frames for separately supporting first and second projection system frames, and modified connection positions for the interaction between the first and second projection system frames and the isolation frame(s).
摘要:
A lithographic apparatus includes an illumination system configured to condition a radiation beam and a support constructed to support a patterning device, the patterning device being capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam. The lithographic apparatus further includes a substrate table constructed to hold a substrate; a positioner constructed to position the substrate table; a projection system configured to project the patterned radiation beam onto a target portion of the substrate; a substrate surface actuator arranged to engage a part of a surface of the substrate facing the projection system, and a position controller configured to control a position of the substrate table, the position controller being arranged to drive the positioner and the substrate surface actuator.
摘要:
A lithographic projection apparatus is disclosed in which a space between the projection system and the substrate is filled with a liquid. An edge seal member at least partly surrounds the substrate or other object on a substrate table to prevent liquid loss when edge portions of the substrate or other object are, for example, imaged or illuminated.
摘要:
A lithographic apparatus includes a position controller configured to control a position of a patterning device in its planar direction by selectively pressing at least one of the side faces of the patterning device. The position controller includes a gas pressure supply and one or more outflow openings directed towards at least one side face of the patterning device so as to exert pressurized gas on this side face in order to control the position of the patterning device in its planar direction in a contactless manner.