Abstract:
A fluid handling structure for a lithographic apparatus configured to contain immersion fluid to a region, the fluid handling structure having, at a boundary of a space: at least one gas knife opening in a radially outward direction of the space; and at least one gas supply opening in the radially outward direction of the at least gas knife opening relative to the space. The gas knife opening and the gas supply opening both provide substantially pure CO 2 gas so as to provide a substantially pure CO 2 gas environment adjacent to, and radially outward of, the space.
Abstract:
Lithographic apparatus and device manufacturing methods are disclosed. In one arrangement there is provided an immersion lithographic apparatus comprising a projection system (PS). The projection system is configured to project a patterned radiation beam through an immersion liquid onto a target portion of a substrate. An external surface of the projection system comprises a first surface (102). The first surface has a non-planar shape. An element (106) is attached to the first surface and positioned so that at least a portion of the element contacts the immersion liquid in use. The element comprises a closed loop of continuously integral material in a preformed state and conforming to the non-planar shape of the first surface.
Abstract:
A lithographic apparatus comprises: an illumination system; a support structure; a substrate table; a projection system and a heating system. The illumination system is configured to condition a radiation beam. The support structure is constructed to support a reticle and pellicle assembly for receipt of the radiation beam conditioned by the illumination system. The substrate table is constructed to support a substrate. The projection system is configured to receive the radiation beam from the reticle - pellicle assembly and to project it onto the substrate. The heating system is operable to heat a pellicle of the reticle - pellicle assembly supported by the support structure. A method for using a reticle - pellicle assembly comprises: illuminating the reticle - pellicle assembly with a radiation beam so as to form a patterned image on a substrate; and heating the pellicle of the reticle - pellicle assembly using a separate heat source.
Abstract:
A fluid handling system for wetting a region of a surface of a substrate irradiated by a radiation beam. The fluid handling system comprises a first device (112) configured to confine a first liquid to a first space (111) between at least a part of the first device and the surface of the substrate. The first device comprising an aperture (10) formed therein for the passage therethrough of the radiation beam (B) to irradiate the region by passing through the first liquid. The first device comprising at least one first liquid supply member (20, 23, 34) configured to provide the first liquid to the first space and at least one extraction member (32) configured to remove liquid from the first space. The fluid handling system further comprises a second device (200) comprising at least one second liquid supply member (201) configured to provide a second liquid to a second space (211) between at least a part of the second device and the surface of the substrate, wherein there is a gap (g) on the surface of the substrate between the second liquid and the first liquid. The fluid handling system is configured to provide the second liquid to the second space without removing any liquid from the second space to form a liquid layer over at least the region, and is configured to provide the first liquid and the second liquid on the surface of the substrate simultaneously.
Abstract:
An immersion lithographic apparatus comprising: a projection system for projecting a patterned radiation beam through an optically active part of a final lens element of the projection system towards a substrate supported by a substrate table, the final lens element having an exposed bottom surface; a liquid confinement structure configured to supply and confine immersion liquid to an immersion space between the final lens element of the projection system and a surface formed of at least one of the substrate and substrate table; and a passageway-former between the projection system and the liquid confinement structure, and a passageway between the passageway-former and the optically active part of the final lens element, the passageway being in liquid communication via an opening with the immersion space and extending radially outwardly with respect to an optical axis of the projection system at least to an edge of the exposed bottom surface of the final lens element and being constructed and configured such that in use it is filled with liquid from the immersion space by capillary action.
Abstract:
A lithographic apparatus comprises a substrate table, post-exposure handling module, a substrate handling robot and a drying station. The substrate table is configured to support a substrate for an exposure process. The post-exposure handling module is for handling the substrate post-exposure. The substrate handling robot is configured to transfer the substrate from the substrate table along a substrate unloading path into the post-exposure handling module. The drying station is configured to actively remove liquid from a surface of the substrate. The drying station is located in the substrate unloading path. The drying station is located in the post-exposure handling module. The post-exposure handling module may be a wafer handler.