Patents Examined by Chia-how Michael Liu
  • Patent number: 8125610
    Abstract: A method for preventing or reducing contamination of an immersion type projection apparatus is provided. The apparatus includes at least one immersion space that is at least partially filled with a liquid when the apparatus projects a beam of radiation onto a substrate. The method includes rinsing at least part of the immersion space with a rinsing liquid before the apparatus is used to project the beam of radiation onto a substrate.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: February 28, 2012
    Assignee: ASML Metherlands B.V.
    Inventor: Jan Cornelis Van Der Hoeven
  • Patent number: 8102509
    Abstract: A projection lens unit, related exposure apparatus and control method are disclosed in which measurement light irradiates a semiconductor substrate after passing through lenses in the projection lens unit and reference light irradiates the semiconductor substrate without passing through the lenses in the projection lens unit are used to derive a control signal adapted to adjust the position of the semiconductor substrate under the projection lens unit.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jang-hyun Yun
  • Patent number: 8102501
    Abstract: An immersion lithography apparatus includes an optical member, a gap defined between the optical member and a surface disposed opposite the optical member, a fluid-supplying device which provides an immersion liquid to the gap, and a field generator which generates a magnetic field or an electric field such that the immersion liquid is subjected to the magnetic or electric field generated by the field generator.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: January 24, 2012
    Assignee: Nikon Corporation
    Inventors: Derek Coon, Andrew J Hazelton
  • Patent number: 8098366
    Abstract: An optical system, in particular of a microlithographic projection exposure apparatus, includes an optical system axis and a polarization-influencing optical arrangement, wherein said arrangement has a polarization-influencing optical element which includes an optically active material having an optical crystal axis and is of a thickness profile which varies in the direction of said optical crystal axis, and a position manipulator for manipulation of the position of said polarization-influencing optical element, wherein the polarization manipulator is adapted to cause rotation of the polarization-influencing optical element about an axis of rotation, wherein said axis of rotation is arranged at an angle of 90°±5° relative to the optical system axis.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: January 17, 2012
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Ingo Saenger, Damian Fiolka
  • Patent number: 8085381
    Abstract: A megasonic immersion lithography exposure apparatus includes an optical transfer chamber for containing an exposure liquid, at least one megasonic plate operably engaging said optical transfer chamber for propagating sonic waves through the exposure liquid, and an optical system provided adjacent to said optical transfer chamber for projecting light through a mask and said exposure liquid and onto a wafer.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: December 27, 2011
    Assignee: Nikon Corporation
    Inventors: Hidemi Kawai, Douglas C Watson, W Thomas Novak
  • Patent number: 8064037
    Abstract: An exposure apparatus that by irradiating an exposure light, via a projection optical system and a liquid, on a substrate placed on the image plane side of the projection optical system, exposes the substrate, the exposure apparatus includes: a liquid supply system that supplies the liquid onto the substrate and a liquid recovery system that recovers the liquid having been supplied on the substrate. When the exposure light is being irradiated on the image plane side of the projection optical system, the liquid recovery system does not perform recovery of the liquid.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 22, 2011
    Assignee: Nikon Corporation
    Inventors: Hiroyuki Nagasaka, Yuuki Ishii, Susumu Makinouchi
  • Patent number: 8059261
    Abstract: A lithographic projection apparatus having a masking device for obscuring part of at least one of a patterning device used for patterning a projection beam before imaging the patterned beam onto a substrate. The masking device includes a first masking structure to obscure said part of said patterning device in a first direction and a second masking structure to obscure said part in a second different direction, wherein said first and second masking structure are disposed in the vicinity of said focal plane in a mechanically uncoupled arrangement with respect to each other.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: November 15, 2011
    Assignee: ASML Netherlands B.V.
    Inventors: Antoine Hendrik Verweij, Jacobus Frederik Molenaar, Gerbrand Petrus Johannes Van Den Hoven, Michael Johannes Vervoordeldonk, Michel Gerardus Pardoel, Gerardus Johannes Verdoes, Jan Van Eijk
  • Patent number: 8054444
    Abstract: A lens cleaning module for a lithography system having an exposure apparatus including an objective lens is provided. The lens cleaning module includes a scanning stage for supporting a wafer beneath the objective lens. A cleaning module is provided adjacent to the scanning stage for cleaning the objective lens in a non-manual cleaning process.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: November 8, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Burn-Jeng Lin, David Lu
  • Patent number: 8040489
    Abstract: A substrate processing method which includes an exposure step wherein an immersion area of a first liquid is formed on a substrate and the substrate is exposed by being irradiated with an exposure light through the first liquid, and an immersion step wherein the substrate is immersed in a second liquid before the exposure step. By this method, occurrences of problems caused by adhesion marks, which are always involved in immersion exposure, can be reduced.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: October 18, 2011
    Assignee: Nikon Corporation
    Inventors: Katsushi Nakano, Masahiko Okumura, Tarou Sugihara, Takeyuki Mizutani, Tomoharu Fujiwara
  • Patent number: 8027017
    Abstract: The present inventive concept provides a substrate treating apparatus and an exposing apparatus that a chuck member, a chuck cleaning member including a cleaning tool removing a foreign substance on a substrate loading surface of the chuck member and a tool cleaning member cleaning a cleaning tool are disposed to be adjacent to each other inside a treating room. The present inventive concept also provides a method of cleaning a cleaning tool using a tool cleaning member. According to the above the apparatuses and the method, contamination of a chuck member by a cleaning tool is prevented and a defocus phenomenon caused by a particle on a chuck member during an exposing process can be minimized.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: September 27, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-A Ryu, Jeong-Heung Kong, Yang-Koo Lee, Hun-Hwan Ha, Yo-Han Ahn, Hweon Jin, Myung-Ki Lee
  • Patent number: 8023099
    Abstract: A substrate processing system is used for a light exposure apparatus which performs light exposure at least twice on each of substrates. The system includes a carrier block, and a process section configured to process each of substrates transferred from the carrier block one by one. The process section includes a first coating process section configured to perform a first coating process, a first developing process section configured to perform a first developing process, a second coating process section configured to perform a second coating process, and a second developing process section configured to perform a second developing process. The system further includes an interface block configured to transfer substrates between the process section and the light exposure apparatus, and a substrate transfer mechanism configured to transfer substrates among them.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: September 20, 2011
    Assignee: Tokyo Electron Limited
    Inventor: Yuichi Yamamoto
  • Patent number: 8023105
    Abstract: The present invention relates to provide a projection exposure device having a small volume, thereby not occupying a large installation space. The projection exposure device is configured to transfer patterns formed on a mask to a surface of film-shaped tape on an upright exposure stage by projecting the patterns onto the surface using light. This projection exposure device includes a transfer mechanism for feeding the tape to the exposure stage vertically, and a projection optical mechanism for irradiating the surface of the tape with the light. The projection optical mechanism is composed of Dyson optics located opposite the transfer mechanism across the exposure stage, and has an optical axis that is substantially perpendicular to the exposure stage.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: September 20, 2011
    Assignee: ORC Manufacturing Co., Ltd.
    Inventors: Jin Sato, Akira Nakazawa, Katsumi Momose
  • Patent number: 8013982
    Abstract: A drive unit drives a wafer stage in a Y-axis direction based on a measurement value of an encoder that measures position information of the wafer stage in the Y-axis direction and based on information on the flatness of a scale that is measured by the encoder. In this case, the drive unit can drive the wafer stage in a predetermined direction based on a measurement value after correction in which a measurement error caused by the flatness of the scale included in the measurement value of the encoder is corrected based on the information on the flatness of the scale. Accordingly, the wafer stage can be driven with high accuracy in a predetermined direction using the encoder, without being affected by the unevenness of the scale.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 6, 2011
    Assignee: Nikon Corporation
    Inventor: Yuichi Shibazaki
  • Patent number: 7990517
    Abstract: A lithographic projection apparatus includes a substrate table configured to hold a substrate, a projection system arranged to project a patterned beam of radiation onto the substrate, a liquid supply system configured to supply liquid to a space between the projection system and the substrate, and a residual liquid detector configured to detect liquid remaining on the substrate and/or the substrate table after an exposure is completed. A device manufacturing method includes projecting, using a projection system of a lithographic apparatus, a patterned beam of radiation through a liquid onto a substrate, the substrate being held by a substrate table, and, after the projecting is complete, detecting residual liquid on the substrate and/or the substrate table.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: August 2, 2011
    Assignee: Nikon Corporation
    Inventors: Hiroaki Takaiwa, Takashi Horiuchi
  • Patent number: 7990516
    Abstract: An exposure apparatus for exposing a substrate by emitting exposure light thereto through a projection optical system and liquid, has a detection apparatus that detects whether the liquid is present on an object disposed lower than a front end of the projection optical system. Another detection apparatus has an emitting portion that emits detection light to an immersion area between the projection optical system and an object disposed on an image plane side thereof, and a light-receiving portion disposed at a predetermined position for the detection light; therein, at least one of size and shape of the immersion area is obtained based on light receiving results. The detection apparatus is used to detect the presence of liquid on such lower-disposed object, the state of the immersion area, or shape or contact angle of the liquid. Optimal measures are taken, based on detection results, for maintaining high exposure and measurement accuracies.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: August 2, 2011
    Assignee: Nikon Corporation
    Inventors: Hiroaki Takaiwa, Takashi Horiuchi
  • Patent number: 7982850
    Abstract: In a lithographic projection apparatus, a structure surrounds a space between the projection system and a substrate table of the lithographic projection apparatus. A gas seal is formed between said structure and the surface of said substrate to contain liquid in the space.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: July 19, 2011
    Assignee: ASML Netherlands B.V.
    Inventors: Joeri Lof, Antonius Theodorus Anna Maria Derksen, Christiaan Alexander Hoogendam, Aleksey Kolesnychenko, Erik Roelof Loopstra, Theodorus Marinus Modderman, Johannes Catharinus Hubertus Mulkens, Roelof Aeilko Siebrand Ritsema, Klaus Simon, Joannes Theodoor De Smit, Alexander Straaijer, Bob Streefkerk, Helmar Van Santen
  • Patent number: 7982857
    Abstract: A stage apparatus PST is provided with a holder PH, which has a substrate holding surface 33A that holds a substrate P; a stage 52, which supports and moves the holder PH; and a recovery apparatus 60, which is disposed in the vicinity of the holder PH and has lyophilic parts 3, 5 of which at least a part of each is lyophilic, that uses the lyophilic parts 3, 5 to recover a liquid 1. As a result, the infiltration of liquid into the space between the substrate and the holder is prevented, even if performing an exposure treatment by filling the space between a projection optical system and the substrate with the liquid.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: July 19, 2011
    Assignee: Nikon Corporation
    Inventors: Yasufumi Nishii, Kenichi Shiraishi, Hirotaka Kohno
  • Patent number: 7973907
    Abstract: A method for treating a substrate before exposing the substrate to which a resist is applied, includes, rinsing the substrate to which a resist is applied, and holding the rinsed substrate in an atmosphere. The atmosphere substantially contains no moisture until conveying the substrate to an exposure apparatus.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: July 5, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kentaro Matsunaga, Daisuke Kawamura, Seiro Miyoshi, Eishi Shiobara
  • Patent number: 7961289
    Abstract: An exposure apparatus that by irradiating an exposure light, via a projection optical system and a liquid, on a substrate placed on the image plane side of the projection optical system, exposes the substrate, the exposure apparatus includes: a liquid supply system that supplies the liquid onto the substrate and a liquid recovery system that recovers the liquid having been supplied on the substrate. When the exposure light is being irradiated on the image plane side of the projection optical system, the liquid recovery system does not perform recovery of the liquid.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: June 14, 2011
    Assignee: Nikon Corporation
    Inventors: Hiroyuki Nagasaka, Yuuki Ishii, Susumu Makinouchi
  • Patent number: 7940374
    Abstract: Disclosed are systems, methods, and computer program products for parallel process focus compensation. Such methods may include three steps. First, a first sensor senses a top surface of a wafer to provide first-sensor data which defines a first topographic map of the first surface of the wafer. The first sensor may be, for example, an air gauge. Second, a second sensor senses the top surface of the wafer in parallel with the first sensor to provide second-sensor data which defines a second topographic map of the first surface of the wafer. The second sensor may be, for example, an optical sensor or a capacitance sensor. Third, a calibration module calibrates focus-positioning parameters of an exposure system based on the first- and second-sensor data. The calibration module may be embodied in hardware, software, firmware, or a combination thereof.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: May 10, 2011
    Assignee: ASML Holding N.V.
    Inventor: Joseph H. Lyons