Abstract:
PROBLEM TO BE SOLVED: To provide lithographic equipment in which a liquid supply system keeps liquid in a space between the final component of the projection system and a substrate by a liquid sealing system. SOLUTION: The liquid supply system 100 is further equipped with a de-mineralizing unit 130, a distillation unit 120, and a UV radiation source 145 to purify an immersion liquid. Chemicals can be added to the immersion liquid to inhibit the growth of living organisms. The components of the liquid supply system 100 can be made of materials non-transparent to visible light to prevent the growth of living organism. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide lithographic equipment in which a liquid supply system keeps liquid in a space between the final component of the projection system and a substrate by a liquid sealing system. SOLUTION: The liquid supply system 100 is further equipped with a de-mineralizing unit 130, a distillation unit 120, and a UV radiation source 145 to purify an immersion liquid. Chemicals can be added to the immersion liquid to inhibit the growth of living organisms. The components of the liquid supply system 100 can be made of materials non-transparent to visible light to prevent the growth of living organism. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radiating system including a radiation generator and an illuminating system capable of measuring a relative position of the radiation generator to the illuminating system with the loss of energy suppressed to a minimum level. SOLUTION: The radiating system includes the radiation generator for generating a radiation beam, a radiation source and the illuminating system so as to receive the radiation beam and provide a projected beam of the radiation. The illuminating system includes a beam measuring system for measuring at least any one of the position and gradient of the radiation beam and a projector for re-directing a part of the section of the radiation beam to the beam measuring system. The beam measuring system may include several position sensors, thereby enabling the system to judge the position adjustment of the radiation source to the illuminating system. A diaphragm is connected to a collector of the radiation generator to enable the compensation of Rx, Ry and Rz besides the compensation of X, Y and Z. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a device that has corrected the distortion in formed images produced because of the use of a reflective mask having a thick absorbing layer and inclined lighting in a lithography device that uses extreme ultraviolet rays as projection beams. SOLUTION: The distortion induced by the reflective mask (MA), on the absorbing layer of which a mask pattern has been embodied, and the inclined lighting is calculated and aberration in a projection system (PL) is introduced and/or controlled in order to correct the distortion. Since this can be done by the control of the optical elements already present in the projection system (MA), there is no need to modify the device. In Zernike polynomial, it is desirable that the aberrations described above are Z2 (inclination of X), Z3 (inclination of Y), or Z7 (frame X). COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic projection apparatus for reducing causes of beam strength loss. SOLUTION: An opening that passes through a barrier is provided, for separating two parts of the apparatus, whereby a controlled aperture is constituted so that a pulse of radiation can be radiated from one part of the apparatus to the other. The controlled aperture closes the opening between the pulses of radiation to minimize the gas flow between the first and the second parts. COPYRIGHT: (C)2004,JPO
Abstract:
A radiation system includes a contamination barrier configured to permit radiation from a radiation source to pass through and to capture debris coming from the radiation source. The contamination barrier includes a plurality of lamellas. The surface of the lamellas includes a material. The radiation system also includes a collector configured to collect radiation from the contamination barrier. An optical surface of the collector includes a material that is the same as the material of the surface of the lamellas.
Abstract:
In a lithographic projection apparatus a liquid supply system maintains liquid in a space between a final element of the projection system and the substrate with a liquid confinement system. The liquid supply system further comprises a de-mineralizing unit, a distillation unit and a UV radiating source for the purification of immersion liquid. Chemicals may be added to the immersion liquid for the inhibition of lifeform growth and components of the liquid supply system may be made of a material which is non-transparent to visible light such that growth of lifeforms is reduced.
Abstract:
System aberrations are effected in a projection system of a lithographic apparatus to optimize imaging of a thick reflective mask with a thick absorber that is obliquely illuminated. The aberrations may include Z5 astigmatism, Z9 spherical, and Z12 astigmatism.
Abstract:
In an illumination system using mirrors, the facets of a field facet mirror focus plural source images on respective facets of a pupil facet mirror to perform the function of an integrator. A facet mask is constructed and arranged to selectively block facets of the filed or pupil facet mirrors. The facet mask has a grid selectively interposable in the projection beam to provide intermediate illumination settings. The grid has a spacing smaller than the source images but larger than the wavelength of the projection beam so that there is no diffraction.