Patent application number | Description | Published |
20120212723 | ELECTROMAGNETIC ACTUATOR, STAGE APPARATUS AND LITHOGRAPHIC APPARATUS - An electromagnetic actuator includes a first and second magnetic members that are displaceable relative to each other and are arranged to provide a magnetic circuit; and a coil configured to, in use, receive a current to generate a magnetic flux through the magnetic circuit, thereby generating a force between the first and second magnetic members in a first direction, the magnetic flux, in use, being transferred between the first and second magnetic members through a first surface of the first magnetic member and a second surface of the second magnetic member, the first and second surface being separated by an airgap, wherein the first surface and the second surface are arranged relative to each other such that an outer dimension of the first surface extends beyond an outer dimension of the second surface in a second direction substantially perpendicular to the first direction. | 08-23-2012 |
20120249987 | LITHOGRAPHIC APPARATUS AND METHOD - A lithographic apparatus includes: an illumination system configured to condition a radiation beam; 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; a substrate table constructed to hold a substrate; a projection system configured to project the patterned radiation beam onto a target portion of the substrate, and a deformation sensor to determine deformations of an object of the lithographic apparatus, wherein the deformation sensor includes at least one optical fiber arranged on or in the object, the optical fiber including one or more Bragg gratings, and an interrogation system to interrogate the one or more Bragg gratings. | 10-04-2012 |
20120300188 | LITHOGRAPHIC APPARATUS COMPRISING A SUBSTRATE TABLE - 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. | 11-29-2012 |
20120327386 | LITHOGRAPHIC APPARATUS, METHOD OF DEFORMING A SUBSTRATE TABLE AND DEVICE MANUFACTURING METHOD - A lithographic apparatus includes a projection system, a substrate table, a plurality of sensors, an actuator and a controller. The projection system is configured to project a patterned beam of radiation onto a substrate. The substrate table is configured to support the substrate and to move relative to the projection system. The plurality of sensors is configured to measure a deformation of the substrate table. The actuator is configured to deform the substrate table. The controller is configured to control the actuator to deform the substrate table based on measurements made by the sensors. The plurality of sensors is located on a first side of the substrate table opposite to a second side of the substrate table facing the projection system. The plurality of sensors is substantially stationary relative to the projection system. | 12-27-2012 |
20130077078 | Lithographic Apparatus and Substrate Handling Method - A lithographic apparatus comprises a substrate table constructed to hold a substrate and a gripper arranged to position the substrate on the substrate table. The gripper includes an electrostatic clamp arranged to clamp the substrate at a top side thereof. The electrostatic clamp is arranged to clamp at least part of a circumferential outer zone of a top surface of the substrate. The invention provides a substrate handling method including positioning the substrate by means of a gripper on a substrate table of a lithographic apparatus. The substrate is clamped at a top side thereof by using an electrostatic clamp of the gripper. | 03-28-2013 |
20130107241 | LITHOGRAPHIC APPARATUS AND SUBSTRATE HANDLING METHOD | 05-02-2013 |
20130162968 | Stage System and a Lithographic Apparatus - A movable stage system is configured to support an object. The stage system comprises an object table configured to support the object and an object table support defining an object table support surface configured to support the object table. The object table support comprises at least one first actuator to drive the object table support in a first driving direction substantially parallel to the object table support surface. In a projection on a plane parallel to the object table support surface the at least one actuator is spaced with respect to the object table in a direction perpendicular to the first driving direction such that the risk on slip between the object table support and the object table supported thereon is decreased. | 06-27-2013 |
20130314684 | Lithographic Apparatus and Device Manufacturing Method - A substrate stage is used in a lithographic apparatus. The substrate stage includes a substrate table constructed to hold a substrate and a positioning device for in use positioning the substrate table relative to a projection system of the lithographic apparatus. The positioning device includes a first positioning member mounted to the substrate table and a second positioning member co-operating with the first positioning member to position the substrate table. The second positioning member is mounted to a support structure. The substrate stage further comprises an actuator that is arranged to exert a vertical force on a bottom surface of the substrate table at a substantially fixed horizontal position relative to the support structure. | 11-28-2013 |
20150070678 | LITHOGRAPHIC APPARATUS COMPRISING AN ACTUATOR, AND METHOD FOR PROTECTING SUCH ACTUATOR - A lithographic apparatus comprises a system. The system comprises a first part, a second part and an energy absorbing element. The second part is configured to move relatively to the first part. The system has a gap located between the first part and the second part during an operation mode of the system. The energy absorbing element is for absorbing energy between the first part and the second part when the first part and the second part crash onto each other in a failure mode of the system. The energy absorbing element is outside the gap. | 03-12-2015 |