摘要:
An actuator assembly includes a coil moveably positionable in a magnetic field generated by a magnet assembly, each of the coil and the magnet having substantially only one side facing the other. A magnetized field-shaping element is provided for shaping the magnetic field such that the magnetic field is substantially perpendicular to the direction of the electrical current for generating a force in a first degree of freedom. Thus, the coil may easily be mounted, since it does not need to be enclosed by magnet poles.
摘要:
A lithographic projection apparatus in which a balance mass is supported by a base frame using at least one supporting member which is coupled to both the base frame and balance mass. Free horizontal movement is provided by providing the supporting member with at least two pivot points.
摘要:
A lithographic apparatus has an illumination system that conditions a radiation beam and a patterning device support that supports a patterning device. The patterning device patterns the radiation beam. The lithographic apparatus also has a substrate support that supports a substrate, a machine frame that supports the substrate support, a projection system that projects the patterned beam onto a target portion of the substrate, and a substrate support drive that moves the substrate support in at least one direction. The lithographic apparatus can have a reaction mass, a balance mass, a base frame, where the substrate support drive is configured to generate a force in the at least one direction between the substrate support and the reaction mass, the balance mass, or the support frame.
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 positioning device for positioning an object table comprises a frame for supporting the object table in a first direction, a motor unit constructed and arranged for exerting 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. The motor unit comprises a first part constructed and arranged to co-operate with a second part for generating the first and second force, the first part being arranged on the object table, such that both the first force and the second force are directed substantially through the centre of gravity of the object table.
摘要:
A substrate or a patterning device used in a lithographic apparatus and a lithographic device manufacturing method are presented. The substrate and patterning device are aligned with respect to a patterning beam and are movably supported by a support. Resonances in said support, however, may render the manufactured device unusable and/ or may render the control system complex. Therefore an actuator assembly frame with flexible coupling devices coupled to the support is provided with a number of actuators configured to move the support in a number of degrees of freedom. Thus, the resonances are damped by the flexible coupling devices resulting in a larger bandwidth for the control system and thus enabling a better position accuracy of the support.
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 an illumination system configured to condition a radiation beam, a patterning device support constructed to support a patterning device being capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam, a substrate support constructed to hold a substrate, and a projection system configured to project the patterned radiation beam onto a target portion of the substrate. An actuator assembly is configured to move one of the supports with six degrees of freedom comprising x, y, z, rx, ry and rz directions. A controller controls the actuator assembly, and includes at least one compensator which is designed to dynamically decouple a dynamics of the actuator assembly in the degrees of freedom.
摘要:
A porous member is used in a liquid removal system of an immersion lithographic projection apparatus to smooth uneven flows. A pressure differential across the porous member may be maintained at below the bubble point of the porous member so that a single-phase liquid flow is obtained. Alternatively, the porous member may be used to reduce unevenness in a two-phase flow.
摘要:
In a lithographic projection apparatus and a device manufacturing method, a movable part is controlled to produce a motion, an absolute value of at least one of a fourth and a higher derivative to time of the position of the motion being limited to less than a maximal value. Specifying at least one of a fourth and a higher derivative to time of the position may help to improve settling behavior to obtain more accurate positioning. Further, a movable part may be controlled to produce an acceleration of the movable part having a high at least one of a third and a higher derivative to time of the position of the motion at a start portion of the acceleration and a corresponding low at least one of a third and a higher derivative to time of the position of the motion at an end portion of the acceleration, the absolute value of the high at least one of the third and the higher derivative to time of the position of the motion being larger than the absolute value of the corresponding low at least one of the third and the higher derivative to time of the position of the motion.