Abstract:
PROBLEM TO BE SOLVED: To provide a variable attenuator of a lithographic device capable of maintaining a high wafer throughput. SOLUTION: The lithographic device is provided with the variable attenuator A that varies the strength thereof without changing the position of a projected beam so as to be able to control the dose of radiation in a wafer portion, thereby optimizing the throughput of the wafer. The variable attenuator consists of two parallel mirrors 21, 22 in which an input radiation beam is incident on a first mirror, thereby, the input radiation beam incident on the first mirror being reflected towards a second mirror to permit the radiation to be reflected, and which are thus positioned so as to generate an output radiation beam having a strength required to be input into an illuminating system, and of a tilting mechanism which maintains the mirrors in parallel with each other and tilts the mirrors so as to allow the angles of the beams incident on the mirrors to be changed and thereby the strength of the output beams to be changed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithography apparatus, a device manufacturing method for manufacturing a device with high precision, and a device manufactured by the same. SOLUTION: The lithography apparatus comprises: an illumination system IL for providing a projection beam of radiation PB; and a support structure MT for supporting a patterning means MA. The lithographic apparatus further comprises: a substrate table WT for holding a substrate W; a projection system PL for projecting the patterned beam onto a target portion of the substrate W; and a condenser which is structured to transmit a radiation R, received from a first radiation source SO, to the illumination system IL. The condenser K comprises at least one heater for heating the condenser when a condensing component receives substantially no radiation from the radiation source SO. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus and a method of manufacturing a device.SOLUTION: A lithographic projection apparatus for using with immersion liquid placed between a final element of a projection system and a substrate W is disclosed. A plurality of methods for protecting the projection system, a substrate table, and components of a liquid constraint system are disclosed. These methods include: a step of applying a protective coating on the final element 20 of the projection system; and a step of providing sacrificial bodies to an upstream side of the components. A two-component final optical element of CaFis also disclosed.
Abstract:
PROBLEM TO BE SOLVED: To provide an earthing system and a mask avoiding such a problem that particles may be generated due to damage to a conductive coating by a conducting pin used for grounding a mask surface, in order to avoid errors caused by electrostatic charging during making a reflective mask for a lithographic apparatus using extreme ultraviolet radiation (EUV) and using the mask for an EUV lithographic apparatus. SOLUTION: This system comprises a conductor CN connected to the earth and formed in such a manner as to make electric contact with a conductive coating 50 covering at least a part of a mask MA. This conductive coating comprises a layer comprising a metal-based compound. The conductive coating of the metal-based compound has sufficiently high conductivity, shows high hardness and high chemical stability, and possesses wear resistance. Accordingly, there are few possibilities of generating particles due to the damage to the coating by pressure applied on the conductor CN. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of performing a tilted focus testing and an exposure apparatus, capable of easily giving a tilt to the projection beam with a pattern using a tilting device, and capable of easily performing tilted defocus testing, and to provide a device manufactured in accordance with it. SOLUTION: In order to tilt the at least one reflective device to the second orientation, a device for tilting is used. A step for supplying the second projection beam with a tilt to the above first projection beam, and a step for producing a second projected radiation beam onto the target object, are provided along with a step for determining a lateral shift of the first and second projected radiation beams on the target object and, determining from the lateral shift a defocus of the target object with respect to the projected radiation beam. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an exposure device, tilt equipment, a method for conducting a tilt convergence test, and a device manufactured by the same. SOLUTION: The exposure device is equipped with a lighting system for providing a projection radiation beam, a support structure which is equipped with a pattern and supports equipment functioning to impart a pattern to a section of the projection beam, a table for holding a target object, a projection system for projecting a patterned beam on the target object, and the tilt equipment for providing a tilted projection beam. The tilt equipment is provided substantially on a pupil plane of the projection system. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus, and to provide a method of manufacturing device. SOLUTION: A lithographic apparatus comprises an illumination system for providing a projection radiation beam, a support structure for supporting a patterned device that functions to give a pattern on the sectional face of the projection beam, a substrate table for holding a substrate, and a projector for projecting a patterned beam on the target of the substrate. A sensor is provided for measuring spatial intensity distribution of the projection beam in the substrate. The spatial distribution of the transmittance or the reflectance of the patterned device can be determined from a measured intensity distribution with the distribution of the projection beam incident on the patterned device. By comparing the transmittance or reflectance of a region having completely the same pattern, integrated (microscopic) distribution of the transmittance or the reflectance of the patterned device can be determined. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
In a lithographic apparatus a beam of radiation passes along a beam path to a substrate, for applying patterned illumination to the substrate. An exhangeable aperture screen (22A) is inserted in the beam path to partially block out the beam from a remainder of the path onto the substrate. A test surface (28) is provided on the aperture screen, so that the test surface receives a part of the beam that is not passed along the remainder of the beam path. The test surface is made of a material that is sensitive, under influence of radiation from the beam, to chemical alterations that also affect the optical element (24) under influence of radiation from the beam. The test surface is later analyzed for chemical alterations after exposure to the beam.
Abstract:
A mask for a lithographic apparatus is disclosed, the mask having a patterned region bearing a pattern to be transferred onto a substrate and a border surrounding the patterned region, wherein at least part of the border has a plurality of elements, the dimensions of the elements being such that, during use, they would not be resolved at the substrate. Also, a lithographic apparatus is disclosed, the apparatus having a projection system, a substrate table arranged to hold a substrate, and a patterning device having a patterned region which bears a pattern to be transferred using a radiation beam via the projection system onto the substrate, at least part of a border surrounding the patterned region comprising a plurality of elements arranged to direct radiation onto the substrate, the dimensions of the elements such that, during use, they are not resolved at the substrate.
Abstract:
An illumination system includes a field-facet mirror-device and a pupil mirror configured to condition a beam of radiation incident on the field-facet mirror-device. The field-facet mirror-device includes reflective field facets movable between first and second orientations relative to the incident beam. The field facets in their first orientations are effective to reflect the incident radiation towards respective reflective pupil facets so as to form part of a conditioned beam reflected from the pupil-facet mirror-device. The field facets in their second orientations are effective to reflect the incident radiation onto respective areas of the pupil-facet mirror-device designated as beam dump areas. The areas are arranged to prevent radiation incident on the areas from forming part of the conditioned beam and are arranged between the limits of an annular area on the pupil-facet mirror-device effective to define the inner and outer regions of the conditioned beam reflected from the pupil-facet mirror-device.