Abstract:
PROBLEM TO BE SOLVED: To provide a patterning device support that leads to improvement in overlays. SOLUTION: Lithographic apparatus includes a position controller for selectively pressurizing, at least one of sides of a patterning device M to control the position of the patterning device M in its planar direction. The position controller includes a gas supply section and one or a plurality of outflow openings directed to the side of the gas pressure supply section, to apply a pressurized gas to at least one side of the patterning device to control the position of the patterning device, in its planar direction in a non-contact manner. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an alignment system and method for effective use of a substrate by minimizing the space for alignment marks on the substrate required to align the substrate with the apparatus in a lithographic apparatus. SOLUTION: The alignment system illuminates an alignment mark 18 comprising a plurality of lines and spaces located in a scribe lane 5 of the substrate with an illumination spot 7, transfers two images of the alignment mark without spatial filtering of the images, rotates the images 180 degrees relatively to each other, combines the two images, detects an alignment signal from the combined images, and determines a unique alignment position by selecting a specific one of extreme values in the detected alignment signal. The alignment mark can be used for both coarse and fine alignments of the substrate, and since no separate marks are needed for both stages, only a limited space is required on the substrate for the alignment purpose. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithography projection equipment capable of obtaining an optimal image quality by preferentially compensating the most important aberration related to an individual usage (individual pattern and illumination mode, etc). SOLUTION: The method comprises the steps of estimating the change of an aberration of a projection system by elapse of time based on a lens heat action model 10, determining an influence specific to the usage for several image parameters according to the estimated change of an aberration of the projection system with respect to several aberration values measured based on IQEA model 11, generating a control signal specific to a beam required and patterned by the estimated aberration change of the projection system by elapse of time and the influence specific to the usage on several parameters of images, and executing transferring adjustment based on the control signal and compensating the influence specific to the usage of the estimated change of the aberration on the images. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To avoid a problem related to expansion and contraction of a template. SOLUTION: The imprint lithography apparatus is arranged away from a substrate holder 58 and arranged between a structure 64 and the substrate holder 58 during the use of imprint template arrangements 50, 52. The structure 64 includes one or more arrays of lines or one or more encoders, and a substrate 56 or the substrate holder 58 and the imprint template have one or more encoders 68 that face the one or more arrays of lines or one or more arrays of lines that face the one or more encoders 68. The configuration determination arrangement is configured to determine a relative configuration between the substrate 56 or substrate holder 58 and the structure 64, and/or a relative configuration between the imprint template arrangements 50, 52 and the structure 64, and/or a relative configuration between the imprint template arrangements 50, 52 and the substrate 56 or substrate holder 58. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an imprint lithography apparatus whose throughput can be increased.SOLUTION: The imprint lithography apparatus is disclosed. The apparatus includes an electromagnetic Lorentz actuator arrangement configured to move an imprint template arrangement, the electromagnetic Lorentz actuator arrangement comprising: an array of magnets; and an array of conductors, each conductor configured to carry an electric current, one of the array of magnets or the array of conductors being moveable and connected to the imprint template arrangement, and the other of the array of magnets or the array of conductors extending at least partially around or forming a part of a substrate holder; the array of magnets and the array of conductors together being in a configuration which facilitates moving of the moveable one of the array of magnets or the array of conductors in six degrees of freedom, such that the imprint template arrangement is also movable in six degrees of freedom.
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus that prevents the slip occurring on a substrate table. SOLUTION: The lithographic apparatus includes an illumination system IL configured to adjust a radiation beam B; a support MT constructed to support a patterning device MA, the patterning device imparting the radiation beam B with a pattern in its cross-section to form a patterned radiation beam; a mirror block MB provided with the substrate table WT constructed to hold a substrate W; and a projection system PS configured to project the patterned radiation beam onto a target portion of the substrate W, wherein the mirror block MB is constructed and arranged to reduce slip between the mirror block MB and the substrate table WT. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an imprint lithography accurately controlling the force of a wide dynamic range actuator. SOLUTION: Disclosed is an imprint lithography apparatus including: a first support structure 21 for supporting a template 20; and a first actuator 22 mounted on the first support structure constituted in use such that it is disposed the first support structure and the template. The first actuator applies force to the template. The imprint lithography apparatus further includes a second support structure 40 and a second actuator 41 disposed between the second support structure and the first support structure. The second actuator applies force to the second support structure, and the moving range of the second actuator is larger than the moving range of the first actuator. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithography apparatus which corrects an undesirable bend of a patterning device using an improved bending mechanism of the patterning device. SOLUTION: The lithography apparatus includes a support that is structured to support the patterning device. The patterning device can give a pattern to the section of an radiation beam to form a patterned radiation beam, and the support has a support clamp structured to clamp the patterning device onto the support. The lithography apparatus also includes the bending mechanism structured to add a bending torque to the clamped patterning device, and this bending mechanism has a force/torque actuator structured to cause a clamp force added to the patterning device by the support clamp to act on the clamped patterning device with virtually no reduction of the force. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an article support which allows every kind of deformation induced by a heat load or the like of an article supported by itself during a lithography process. SOLUTION: The article support which is constructed for supporting a reticle (a first article) or a wafer (a second article) includes several protrusions for support on each of which the article is set when in use and which is constructed in such a way as to demarcate a support region for providing a flat surface on which they support the article, to enable the expansion and contraction of at least a part of the article by the support region when the article is subjected to the heat load in this way and to reduce the accumulation of mechanical stress in the article and a position sensor which is constructed in such a way as to determine a displacement position offset in one direction of the article on a flat surface of its support region for a certain period. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of correcting the distortion of a pattern image projected in an imaging process and decreasing an overlay error, when the pattern is overlaid on a substrate by a lithography projection apparatus. SOLUTION: The pattern is arranged on a mask, and the image is made by using a part of a projection system. The imaging quality of the part of the projection system is described by an imaging quality parameter, the image can be adjusted by an image tuning parameter in the projection system. An ideal image of a projection pattern is decided, a distorted image of the pattern which is simulated on the basis of the imaging quality parameter is decided, the deflection between the simulated image and the ideal image is decided, the image tuning parameter is corrected and changed in the imaging process in order to minimize deflection, and the distortion of the image is decreased. COPYRIGHT: (C)2005,JPO&NCIPI