Patents Examined by Alan Mathew
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Patent number: 7573560Abstract: An exposure apparatus exposes a pattern onto a substrate. The exposure apparatus includes a supporting plate having a surface, a substrate stage which holds the substrate and is movable over the supporting plate, a liquid supply device having a supply nozzle which supplies liquid to the substrate, a first collection device which collects the liquid directly from the substrate, and a second collection device which collects liquid which has been discharged to the supporting plate.Type: GrantFiled: May 23, 2007Date of Patent: August 11, 2009Assignee: Nikon CorporationInventor: Dai Arai
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Patent number: 7570343Abstract: A microlithographic projection exposure apparatus contains an illumination system for generating projection light and a projection lens with which a reticle that is capable of being arranged in an object plane of the projection lens can be imaged onto a light-sensitive layer that is capable of being arranged in an image plane of the projection lens. The projection lens is designed for immersion mode, in which a final lens element of the projection lens on the image side is immersed in an immersion liquid. A terminating element that is transparent in respect of the projection is fastened between the final lens element on the image side and the light-sensitive layer.Type: GrantFiled: November 23, 2005Date of Patent: August 4, 2009Assignee: Carl Zeis SMT AGInventors: Aurelian Dodoc, Karl Heinz Schuster, Joerg Mallmann, Wilhelm Ulrich, Hans-Juergen Rostalski, Hubert Holderer, Bernhard Gellrich, Juergen Fischer, Susanne Beder, Andreas Wurmbrand, Ulrich Loering, Albrecht Ranck
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Patent number: 7563042Abstract: A substrate carrying apparatus includes an arm body; supporting portion provided in the arm body and adapted to support a region inside the periphery of the rear face of the substrate; a one-side restricting portion and an other-side restricting portion provided at opposite positions across the periphery of the substrate to restrict the peripheral positions of the substrate; and liquid receivers provided between each supporting portion and each restricting portion. A liquid drop attached to the rear peripheral portion of the substrate flows down on the bottom face of each liquid receiver. Even though repeated substrate carrying operations are performed and thus the liquid drop is accumulated in each liquid receiver, there is no risk that the liquid drop in each liquid receiver would be scattered in the air by the action of the periphery of the substrate and hence the scattered liquid would be attached again onto the surface of the substrate.Type: GrantFiled: August 16, 2006Date of Patent: July 21, 2009Assignee: Tokyo Electron LimitedInventors: Masahiro Nakaharada, Seiki Ishida, Taro Yamamoto, Katsuhiro Morikawa
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Patent number: 7564534Abstract: An alignment system uses a self-referencing interferometer that produces two overlapping and relatively rotated images of an alignment marker. Detectors detect intensities in a pupil plane where Fourier transforms of the images are caused to interfere. The positional information is derived from the phase difference between diffraction orders of the two images which manifests as intensity variations in the interfered orders. Asymmetry can also be measured by measuring intensities at two positions either side of a diffraction order.Type: GrantFiled: November 29, 2007Date of Patent: July 21, 2009Assignee: ASML Netherlands B.V.Inventors: Arie Jeffrey Den Boef, Maarten Hoogerland, Boguslaw Gajdeczko
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Patent number: 7564536Abstract: A lithographic apparatus is disclosed that includes an article support constructed to support a first article, capable of imparting a radiation beam with a pattern in its cross-section to form a patterned radiation beam, in a beam path of the radiation beam or a second article to be placed in a beam path of the patterned radiation beam, the article support having a plurality of supporting protrusions on which the first article or the second article is disposed in use, wherein the plurality of supporting protrusions are constructed to define a support zone to provide a plane of support for the first article or the second article, so that when the first article or the second article is subjected to a thermal load the support zone allows at least a portion of the first article or the second article to expand or contract to reduce the build up of a mechanical stress in the first article or second article, respectively, while maintaining the first article or second article substantially fixed to the article supporType: GrantFiled: November 8, 2005Date of Patent: July 21, 2009Assignee: ASML Netherlands B.V.Inventors: Joost Jeroen Ottens, Marcus Emile Joannes Boonman, Thomas Josephus Maria Castenmiller, Andre Bernardus Jeunink
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Patent number: 7563043Abstract: In a coating/developing apparatus, a process section includes post-exposure baking units each having a waiting position and configured to perform a baking process on a substrate. An interface section transfer mechanism includes a first transfer mechanism configured to transfer the substrate to and from the process section and to load the substrate into the post-exposure baking units, and a second transfer mechanism configured to transfer the substrate to and from the light exposure apparatus. An interface section includes a relay position configured to place thereon the substrate transferred by the second transfer mechanism, and to allow the first transfer mechanism to receive the substrate therefrom. A control section is arranged to set the substrate on standby at the relay position and the waiting position, to make a time period constant among substrates from an end of the light exposure process to a start of a post-exposure baking process.Type: GrantFiled: October 23, 2007Date of Patent: July 21, 2009Assignee: Tokyo Electron LimitedInventors: Tomohiro Kaneko, Akira Miyata
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Patent number: 7561250Abstract: A lithographic apparatus is disclosed having a removable adhesive film carrying a coating on at least a part of the apparatus. In an embodiment, a liquid supply system having a liquid confinement structure extending along at least part of a boundary of a space between a projection system and a substrate support is disclosed, wherein the film carrying the coating is on at least part of the liquid confinement structure.Type: GrantFiled: June 19, 2007Date of Patent: July 14, 2009Assignee: ASML Netherlands B.V.Inventors: Paulus Martinus Maria Liebregts, Menno Fien, Erik Roelof Loopstra, Ronald Van Der Ham, Wilhelmus Franciscus Johannes Simons, Daniel Jozef Maria Direcks, Franciscus Johannes Joseph Janssen, Gert-Jan Gerardus Johannes Thomas Brands, Koen Steffens
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Patent number: 7557900Abstract: An exposure apparatus can prevent disadvantages of supplying liquid of reduced cleanliness and formation of watermarks. The exposure apparatus (EX) exposes a substrate (P) by irradiating exposure light (EL) onto the substrate (P) via a projection optical system (PL) and a liquid (LQ), and includes a liquid supply mechanism (10) for supplying the liquid (LQ), and a measuring device (60) which measures a time during which the supply of the liquid from the liquid supply mechanism is stopped (10).Type: GrantFiled: February 8, 2005Date of Patent: July 7, 2009Assignee: Nikon CorporationInventor: Kenichi Shiraishi
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Patent number: 7551265Abstract: Techniques for minimizing contamination by particles that wear off of components that come into and out of contact with each other. The invention involves forming at least one of the components out of a magnetic material so that the particles that wear off of the component are magnetic themselves. Then a magnetic field is used to attract the particles. In one embodiment, the particles are attracted to and collected by a magnet. In this way, the particles are drawn away from any components that might be contaminated. In some embodiments, the magnetic component is also magnetized. In other embodiments, a magnet is placed in contact with the magnetic component. In other embodiments, each of the components that come into contact with each other are formed of a magnetic material.Type: GrantFiled: October 1, 2004Date of Patent: June 23, 2009Assignee: Nikon CorporationInventor: Alton H. Phillips
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Patent number: 7549811Abstract: A forward direction-only path (first substrate transport path) is formed for transporting substrates in a forward direction to pass the substrates on to an exposing apparatus. A separate, substrate transport path (second substrate transport path) is formed exclusively for post-exposure bake (PEB). Substrate transport along each path is carried out independently of substrate transport along the other. A fourth main transport mechanism is interposed as a predetermined substrate transport mechanism between transfer points consisting of a buffer acting as a temporary storage module for temporarily storing the substrates and a post-exposure bake (PEB) unit corresponding to a predetermined treating unit. This arrangement forms the path for transporting the substrates between the buffer and the PEB unit, to allow PEB treatment of the substrates to be performed smoothly. Similarly, the substrates are transported smoothly to the buffer.Type: GrantFiled: November 30, 2007Date of Patent: June 23, 2009Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Yoshihisa Yamada, Masafumi Maeda, Takashi Taguchi
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Patent number: 7548304Abstract: The invention provides a chuck plate assembly that includes a shadow mask formed with a predetermined pattern; a shadow mask frame holding the shadow mask and having heat-radiating and cooling functions; a substrate aligned with the shadow mask and onto which deposition materials from a deposition source are deposited; and a chuck plate, attaching the substrate to the shadow mask, that includes a refrigerant circulating duct. The temperature of the substrate is optimized in consideration of the temperature of the shadow mask so that an alignment error due to thermal deformation is minimized. That is, the temperature of the shadow mask itself is prevented from rising, and thereby prevents deformation of the shadow mask due to thermal expansion, which improves the precision of a substrate pattern position.Type: GrantFiled: December 12, 2005Date of Patent: June 16, 2009Assignee: Samsung Mobile Display Co., Ltd.Inventors: Sang Jin Han, Sung Ho Lee, Myung Soo Huh, Seok Heon Jeong, Kwan Seop Song, Hee Cheol Kang
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Patent number: 7545479Abstract: A lithographic projection apparatus includes a substrate table configured to hold a substrate, a projection system configured to project a patterned beam onto a target portion of the substrate, liquid being provided to a space between the projection system and the substrate, and a shutter configured to isolate the space from the substrate or a space to be occupied by a substrate. The shutter is separable from the remainder of the apparatus.Type: GrantFiled: May 11, 2007Date of Patent: June 9, 2009Assignee: Nikon CorporationInventor: Michael Binnard
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Patent number: 7538853Abstract: An exposure process using photomasks, the process includes the steps of: providing a plurality of glass photomasks for optical lithography with respect to a target substrate to be processed, the photomasks having identical exposure patterns, and exposing the target substrate a plurality of times using the plurality of glass photomasks.Type: GrantFiled: March 21, 2006Date of Patent: May 26, 2009Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Masashi Nishiki, Hisashi Okada
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Patent number: 7535549Abstract: The present invention provides a method for determining the forces to be applied to a substrate in order to deform the same and correct for overlay misalignment.Type: GrantFiled: June 2, 2005Date of Patent: May 19, 2009Assignee: Board of Regents, University of Texas SystemInventors: Anshuman Cherala, Sidlgata V. Sreenivasan, Kranthimitra Adusumilli
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Patent number: 7532306Abstract: A microlithographic projection exposure apparatus contains an illumination system (12) for generating projection light (13) and a projection lens (20; 220; 320; 420; 520; 620; 720; 820; 920; 1020; 1120) with which a reticle (24) that is capable of being arranged in an object plane (22) of the projection lens can be imaged onto a light-sensitive layer (26) that is capable of being arranged in an image plane (28) of the projection lens. The projection lens is designed for immersion mode, in which a final lens element (L5; L205; L605; L705; L805; L905; L1005; L1105) of the projection lens on the image side is immersed in an immersion liquid (34; 334a; 434a; 534a). A terminating element (44; 244; 444; 544; 644; 744; 844; 944; 1044; 1144) that is transparent in respect of the projection light (13) is fastened between the final lens element on the image side and the light-sensitive layer.Type: GrantFiled: August 13, 2004Date of Patent: May 12, 2009Assignee: Carl Zeiss SMT AGInventors: Aurelian Dodoc, Karl Heinz Schuster, Joerg Mallmann, Wilhelm Ulrich, Hans-Juergen Rostalski
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Patent number: 7530749Abstract: A coating and developing system prevents wetting its component units with water when the coating and developing system forms a resist film on a substrate and processes the substrate processed by immersion exposure by a developing process. A substrate having a surface coated with a resist film and processed by immersion exposure is placed on a substrate support device and a liquid detector detects at least the liquid formed a liquid film for immersion exposure and remaining on the surface of the substrate. A decision is made as to whether or not the substrate needs to be dried on the basis of the result of detection made by the liquid detector. If it is decided that the substrate needs to be dried, the substrate is dried by a drying means. Thus wetting the interior of the coating and developing system with water can be prevented. Since only substrates that need to be dried are subjected to a drying process, the coating and developing system is able to operate at a high throughput.Type: GrantFiled: December 3, 2004Date of Patent: May 12, 2009Assignee: Tokyo Electron LimitedInventors: Taro Yamamoto, Osamu Hirakawa
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Patent number: 7532305Abstract: A lithographic apparatus arranged to transfer a pattern from a patterning device onto a substrate includes a reference set of gratings provided in the substrate, the reference set including two reference gratings having line elements in a first direction and one reference grating having line elements in a second, perpendicular, direction. A measurement set of gratings is provided on top of the reference set of gratings, the measurement set comprising three measurement gratings similar to the reference gratings. Two of the measurement gratings are oppositely biased in the second direction relative to the respective reference gratings. An overlay measurement device is provided to measure asymmetry of the three gratings in the reference set and the measurement set, and to derive from the measured asymmetry the overlay in both the first and second direction.Type: GrantFiled: March 28, 2006Date of Patent: May 12, 2009Assignee: ASML Netherlands B.V.Inventors: Arie Jeffrey Den Boef, Everhardus Cornelis Mos, Maurits Van Der Schaar, Stefan Carolus Jacobus Antonius Keij
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Patent number: 7532307Abstract: One or more focus settings for use in a device manufacturing method is determined by printing a plurality of target markers at different focus settings and using a scatterometer, e.g. off-line, to measure a property of the target markers that is indicative of focus.Type: GrantFiled: June 30, 2005Date of Patent: May 12, 2009Assignee: ASMl Netherlands B.V.Inventors: Maurits Van Der Schaar, Arie Jeffrey Den Boef, Mircea Dusa, Antoine Gaston Marie Kiers
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Patent number: 7527442Abstract: A process for forming a resist pattern according to the invention is a process for forming a resist pattern in which a photoresist is coated on a first substrate, the coated photoresist is exposed to light of a predetermined pattern, and afterwards developing is performed, wherein in at least one of the processes of coating, exposing, and developing, whenever lots to which the first substrate belongs change, the atmosphere residing in the lot is changed.Type: GrantFiled: October 15, 2007Date of Patent: May 5, 2009Assignee: Elpida Memory, Inc.Inventor: Hiroshi Yoshioka
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Patent number: 7525634Abstract: Apparatus for processing substrates according to a predetermined photolithography process includes a loading station in which the substrates are loaded, a coating station in which the substrates are coated with a photoresist material, an exposing station in which the photoresist coating is exposed to light through a mask having a predetermined pattern to produce a latent image of the mask on the photoresist coating, a developing station in which the latent image is developed, an unloading station in which the substrates are unloaded and a monitoring station for monitoring the substrates with respect to predetermined parameters of said photolithography process before reaching the unloading station.Type: GrantFiled: October 25, 2007Date of Patent: April 28, 2009Assignee: Nova Measuring Instruments Ltd.Inventors: Giora Dishon, Moshe Finarov, Zvi Nirel, Yoel Cohen