Abstract:
A system for positioning, a stage system, a lithographic apparatus, a method for positioning and a method for manufacturing a device in which use is made of a stage system that includes a plurality of gas bearing devices. Each gas bearing device includes: a gas bearing body, which has a free surface, a primary channel which extends through the gas bearing body and has an inlet opening in the free surface, a secondary channel system which extends through the gas bearing body and which has a plurality of discharge openings in the free surface. The flow resistance in the secondary channel system is higher than the flow resistance in the primary channel.
Abstract:
A substrate table to support a substrate, the substrate table including a main body, burls extending from the main body and having first upper ends that define a support surface to support the substrate, and support pins having second upper ends. The support pins are movable between a retracted position and an extended position. The support pins are arranged to support the substrate in the extended position. The support pins are arranged to be switched to a first stiffness mode and a second stiffness mode. In the first stiffness mode, the support pins have a first stiffness in a direction parallel to the support surface. In the second stiffness mode, the support pins have a second stiffness in the direction parallel to the support surface. The first stiffness is different from the second stiffness.
Abstract:
An object table to support an object, the object table having a support body, an object holder to hold an object, an opening adjacent an edge of the object holder, and a channel in fluid communication with the opening via a passageway, wherein the channel is defined by a first material which is different to a second material defining the passageway.
Abstract:
A system for positioning, a stage system, a lithographic apparatus, a method for positioning and a method for manufacturing a device in which use is made of a stage system. The stage system has a plurality of air bearing devices. Each air bearing device has: a gas bearing body which has a free surface, a primary channel which extends through the bearing body and has an inlet opening in the free surface, and a secondary channel system which extends through the bearing body and which has a plurality of discharge openings in the free surface. The flow resistance in the secondary channel system can be higher than the flow resistance in the primary channel.
Abstract:
A substrate holder (WT) for use in a lithographic apparatus and configured to support a substrate, the substrate holder comprising: a main body (20) having a main body surface; and a plurality of burls (21) projecting from the main body surface; wherein each burl has a distal end configured to engage with the substrate; the distal ends of the burls substantially conform to a support plane whereby a substrate can be supported in a substantially flat state on the burls; and a flow control feature (22, 22c, 22d) configured to form a gas cushion adjacent the periphery of the substrate holder when a substrate is being lowered onto the substrate holder.
Abstract:
An object table to support an object, the object table having a support body, an object holder to hold an object, an opening adjacent an edge of the object holder, and a channel in fluid communication with the opening via a passageway, wherein the channel is defined by a first material which is different to a second material defining the passageway.
Abstract:
A substrate holder for a lithographic apparatus has a planarization layer provided on a surface thereof. The planarization layer provides a smooth surface for the formation of a thin film stack forming an electronic component. The thin film stack comprises an (optional) isolation layer, a metal layer forming an electrode, a sensor, a heater, a transistor or a logic device, and a top isolation layer.
Abstract:
A method for compensating for an exposure error in an exposure process of a lithographic apparatus that comprises a substrate table, the method comprising: obtaining a dose measurement indicative of a dose of IR radiation that reaches substrate level, wherein the dose measurement can be used to calculate an amount of IR radiation absorbed by an object in the lithographic apparatus during an exposure process; and using the dose measurement to control the exposure process so as to compensate for an exposure error associated with the IR radiation absorbed by the object during the exposure process.
Abstract:
A substrate holder for use in a lithographic apparatus. The substrate holder comprises a main body, a plurality of burls and a heater and/or a temperature sensor. The main body has a surface. The plurality of burls project from the surface and have end surfaces to support a substrate. The heater and/or temperature sensor is provided on the main body surface. The substrate holder is configured such that when a substrate is supported on the end surfaces, a thermal conductance between the heater and/or temperature sensor and the substrate is greater than a thermal conductance between the heater and/or temperature sensor and the main body surface.
Abstract:
An object table to support an object, the object table having a support body, an object holder to hold an object, an opening adjacent an edge of the object holder, and a channel in fluid communication with the opening via a passageway, wherein the channel is defined by a first material which is different to a second material defining the passageway.