Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus and method capable of removing, or relaxing increase of overlay errors of patterns. SOLUTION: The lithographic method for providing an alignment mark onto a layer provided on a substrate is disclosed. The method includes providing the alignment mark to a region aligned within a specific angle range to a surface of the substrate having the layer provided thereon. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To correct position errors caused by slip between a reticle and a reticle stage. SOLUTION: A lithographic apparatus has a patterning support holding a patterning device. At least one position sensor measures the position of the patterning device relative to the patterning support, and generates a measuring signal. A positioning device controls the position of the patterning support on the basis of the measuring signal input into the positioning device. In a corresponding device manufacturing method, a patterning support is provided. A patterning device is held on the patterning support. The patterning support is moved along a line of movement. The position of the patterning device is measured relative to the patterning support, and the position of the patterning support is controlled on the basis of the measurement of the position of the patterning device relative to the patterning support. Thus, the position of the patterning support is controlled to compensate for slip of the patterning device relative to the patterning support. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a detector system for resolving radiation from a ghost particle from radiation from an actual particle for differentiation between a particle and a ghost particle. SOLUTION: The detector system outputs a plurality of detector signals corresponding to intensities of radiation being incident on a part of the detector system or the detector system outputs detector signals corresponding to intensities of radiation incident on the detector system. In the plurality of detector signals, radiation received from a particle does not have levels higher than a predetermined threshold level respectively and, when radiation is received from the ghost particle, an approximately same level above the threshold level is displayed. The detector system includes a radiation detector device for generating a first detector signal in response to radiation incident on a predetermined part and a radiation blocking assembly for preventing radiation not originating from a particle from being incident on the predetermined part of the detector device. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of improved model for synchronizing a track unit and a lithography apparatus for maximizing the throughput in lithographic processing cell configuration. SOLUTION: Lithographic processing cell includes a lithographic exposure apparatus configured to expose a substrate, and track unit configured prepare the substrate before the exposure, and to develop the substrate after the exposure. The method includes predicting the time needed for the lithographic exposure apparatus to become ready to receive a substrate that has been prepared by the track unit for exposure, and adjusting the speed with which the track unit prepares the substrate so that the substrate becomes ready for the lithographic exposure apparatus to receive in time. The use of buffer in the track can be avoided significantly or even completely obviated, by adjusting the track speed so that the substrate becomes ready, just in time when the lithographic exposure apparatus needs the substrate. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide the preparing method of a schedule that operates a machine forming at least a part of a lithographic device or a lithographic processing cell. SOLUTION: In the method, a plurality of weighting factors on each of a plurality of qualities that affect the results of a lithographic process are received. The optimal schedule of a task that should be executed is prepared to complete the lithographic process, the optimal schedule is a schedule that brings about the results having the maximum total quality value, and the total quality is the total of each value of the qualities and each of the weighting factors. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To alleviate the problem caused by the fact that a lighting source has to supply a beam having a large area for illuminating an alignment marker. SOLUTION: The lithographic apparatus includes a support section for supporting a patterning device for forming a radiation beam with a pattern, by giving a pattern to the section of the radiation beam and a substrate table for holding a substrate. The projection system projects the radiation beam with a pattern to the target part of the substrate. The patterning device includes one or a plurality of alignment patterns, and the lithographic apparatus includes a sub-lighting system for lighting each of the alignment patterns by another radiation using the radiation beam. The projection system projects an image of the respective alignment patterns to the substrate table. The substrate table includes one or a plurality of sensors for detecting the projected image of the alignment pattern. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To disclose system and method for processing wafers, a combined post-exposure bake and chill unit, and an interface. SOLUTION: An exemplary system includes a lithography tool 12, a local track 14, a transfer device 20, a transfer device handler 21, an interface unit 16, and a controller to schedule processing. An exemplary combined post-exposure bake and chill unit includes an enclosure having an opening in its side, and a bake unit and a chill unit in the enclosure. An exemplary interface includes a plurality of enclosures arranged around robots that transfer wafers among the enclosures, one of the plurality of enclosures being an integrated bake and chill unit. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a detector system for resolving radiation from a ghost particle from radiation from an actual particle for discriminating between a particle and a ghost particle. SOLUTION: The detector system outputs a plurality of detector signals corresponding to intensities of radiation being incident on a part of the detector system or the detector system outputs detector signals corresponding to intensities of radiation incident on the detector system. In the plurality of detector signals, radiation received from a ghost particle does not have levels higher than a prescribed threshold level respectively and, when radiation is received from a particle, an approximately same level above the threshold level is displayed. The detector system includes a radiation detector device for generating a first detector signal in response to radiation incident on a prescribed part and a radiation blocking assembly for preventing radiation not originating from a particle from being incident on the prescribed part of the detector device. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent a patterning device from sliding to a support. SOLUTION: A lithographic equipment includes an illumination system configured to condition a radiation beam; a support constructed to support a patterning device, the patterning device being capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam; a substrate table constructed to hold a substrate; and a projection system configured to project the patterned radiation beam onto a target portion of the substrate. An applicator, such as a humidifier is provided to provide molecules, such as water molecules, to clamp area of the patterning device. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an operation method in which scheduling for determining an order of many tasks that are performed using various functions in a machine involving lithography is corrected in a restorable manner when an expected situation occurs during operation. SOLUTION: In the operation method of the machine, a state resistor SR indicating a state of the machine and a database TDB of tasks executable in the machine are maintained, possible task orders are created based on conditions before and after the tasks on the state of the system (rather than a priority relation), an order confirming given start and end states of the machine is selected from the created orders. According to the method, the order of the tasks executable in the machine can be quickly created, and an optimum order can be quickly found, in addition, automatic restoration from an exception is possible. COPYRIGHT: (C)2005,JPO&NCIPI