摘要:
A photolithography exposure apparatus exposes a substrate to a pattern image formed on a mask to transfer the pattern onto the substrate. The apparatus includes a substrate stage on which the substrate is mounted. The substrate stage together with the substrate is movable when the substrate is being exposed to the pattern image. A memory stores pattern image distortion information generated in accordance with an exposure position on the substrate when the pattern image is being transferred onto the substrate. A compensator compensates for the distortion so that the pattern is formed cleanly on the substrate.
摘要:
A plate with substantially constant thickness is used to compensate for the residual distortion in the image projected by a high-quality projection lens for lithography. The two surfaces of the plate have an identical aspherical profile, whose shape has been calculated using the measured distortion map of the lithographic objective. The figuring process applied to the plate uses the principle of polishing in the presence of an elastic deformation, so as to achieve the desired aspherical shape on both sides.
摘要:
A plate with substantially constant thickness is used to compensate for the residual distortion in the image projected by a high-quality projection lens for lithography. The two surfaces of the plate have an identical aspherical profile, whose shape has been calculated using the measured distortion map of the lithographic objective. The figuring process applied to the plate uses the principle of polishing in the presence of an elastic deformation, so as to achieve the desired aspherical shape on both sides.
摘要:
An exposure apparatus for projecting and exposing through a projection optical system a transfer pattern formed on a master onto a substrate placed on a movable stage. The apparatus includes a mark placed on the movable stage and imparting a phase difference to incident light, based on an incident position, and then outputting the light, an image reception section, wherein the mark is imaged on the image reception section, using light of an exposure wavelength through the projection optical system, and a data processing section for calculating an imaging performance of the projection optical system on the basis of image data obtained by the image reception section.
摘要:
Apparatus and method for compensating for distortion of the substrate of a printed circuit workpiece that involves performing two tasks. First, a mask that carries functional circuit features and alignment features is positioned rotatably so that the mask alignment features, when projected onto a table that holds the printed circuit workpiece, will be on a line extending parallel to one of two orthogonal axes of the table. Second, the spacing of alignment features on the printed circuit workpiece is determined and this determination is a measure of the distortion of the printed circuit workpiece substrate. A lens through which the mask image is projected is moved to adjust the magnification of the image in accordance with the measured distortion of the substrate of the printed circuit workpiece.
摘要:
A microlithography projection apparatus comprises an illuminator, for supplying a beam of radiation for illuminating a pattern on a mask, and a projection system for forming an image of the illuminated portion of the mask on a resist-coated substrate. The image is projected off-axis with respect to the optical axis of the projection system and the aperture of the illuminator is minimized to that of the illuminated portion of the mask. The illuminator is provided with a compensator, such as a tiltable mirror or wedge-like transmissive optical element for compensating for telecentricity errors intrinsic to the projection system.
摘要:
A monochrome printer (100) and a method for printer optics design utilizing a spatial light modulator (52), able to deploy a number of possible monochromatic light sources for use with a number of different types of photosensitive media (160), are disclosed. The printer provides high resolution and grayscale imaging capability for monochromatic applications such as micrographics and for diagnostic imaging. In the apparatus and method, illumination optics (11) receive a source light beam, from one or more LEDs or from a number of other possible monochromatic light sources available on the printer (100), uniformize and polarize the beam, and direct the beam through a polarization beamsplitter element (50). The polarization beamsplitter element (50) directs one polarization state of light to an LCD spatial light modulator (52). The LCD spatial light modulator (52) modulates the polarization of the polarized beam to provide output exposure energy suitable for image marking on dry or aqueous photosensitive media (160). An optional sensor (234) allows printer (100) to automatically select a monochromatic light source of appropriate wavelength for a given type of photosensitive media (160).
摘要:
An optical arrangement includes a diffractive optical element and a curvature control system for changing curvature of the diffractive optical element. The optical arrangement can be incorporated into an exposure apparatus having an illuminating system for illuminating a mask having a pattern formed thereon and a projecting system for projecting the pattern of the mask onto a wafer, such that the projecting system includes a diffractive optical element and a curvature control system for changing curvature of the diffractive optical element.
摘要:
Charged-particle-beam (CPB) microlithographic exposure apparatus and reticles for use therewith. The reticle defines a pattern corresponding to a die pattern to be imprinted on the wafer. The pattern on the reticle is divided into multiple subregions separated from each other by light-shielding boundary zones. Multiple reticle subregions are have so as to include a center portion and a peripheral portion. As such reticle subregions are projected onto the substrate, the peripheral portions of adjacent subregions as projected onto the wafer overlap each other.
摘要:
A driving device includes a first member, an annular second member arranged outside the first member, an annular first plate for connecting the first and second members to each other, and an annular second plate for connecting the first and second members to each other. The first and second members are moved relative to each other by supplying or exhausting a fluid into or from a space surrounded by the first and second members and the first and second plates. Also, at least one of (i) an inner diameter a1 of a portion of the second member at which the second member is connected to the first plate is different from an inner diameter a2 of a portion of the second member at which the second member is connected to the second plate and (ii) an outer diameter b1 of a portion of the first member at which the first member is connected to the first plate is different from an outer diameter b2 of a portion of the first member at which the first member is connected to the second plate.