Patents Examined by John S Ruggles
  • Patent number: 8137868
    Abstract: A photomask blank has a light-shielding film composed of at least two layers on a transparent substrate. The light-shielding film includes a light-shielding layer made of a material mainly containing tantalum nitride and further containing xenon and a front-surface antireflection layer formed on the light-shielding layer and made of a material mainly containing tantalum oxide and further containing argon.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: March 20, 2012
    Assignee: Hoya Corporation
    Inventor: Osamu Nozawa
  • Patent number: 8137517
    Abstract: A sputtering system includes a first sputtering assembly configured to sputter material onto a first disk and a second sputtering assembly configured to sputter material onto a second disk, the second sputtering assembly positioned proximate the first sputtering assembly. The first sputtering assembly includes a first magnetic ring, and the second sputtering assembly includes a second magnetic ring. The first magnetic ring includes a first region of lower relative magnetic strength positioned near the second magnetic ring, and the second magnetic ring includes a second region of lower relative magnetic strength positioned near the first magnetic ring.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: March 20, 2012
    Assignee: WD Media, Inc.
    Inventor: Allen Bourez
  • Patent number: 8129095
    Abstract: A method of improving damascene wire uniformity without reducing performance. The method includes simultaneously forming a multiplicity of damascene wires and a multiplicity of metal dummy shapes in a dielectric layer of a wiring level of an integrated circuit chip, the metal dummy shapes being dispersed between damascene wires of the multiplicity of damascene wires; and removing or modifying those metal dummy shapes of the multiplicity of metal dummy shapes within exclusion regions around selected damascene wires of the multiplicity of damascene wires. Also a method of fabricating a photomask and a photomask for use in improving damascene wire uniformity without reducing performance.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: March 6, 2012
    Assignee: International Business Machines Corporation
    Inventors: Casey Jon Grant, Jude L. Hankey
  • Patent number: 8124303
    Abstract: A phase shift mask is provided which includes: a substrate that is transparent to irradiation light, a shielding region formed on the substrate and in which a line pattern is formed, and a first transparent region and a second transparent region located on respective opposite sides of the shielding region on the substrate, wherein a phase shifter is formed under the first transparent region, and the phase shifter has a side wall including an outward protruding bent portion. The phase shifter can be formed by, for example, irradiating and scanning a predetermined region of the substrate with femtosecond pulse laser light applied from above the substrate.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: February 28, 2012
    Assignee: Elpida Memory, Inc.
    Inventor: Masahito Hiroshima
  • Patent number: 8114557
    Abstract: Provided is a method for optical proximity correction for use in manufacturing highly resolved semiconductor chips. The method includes setting a target layout; setting a peculiar area; sorting the peculiar area from the target layout; generating a marking layer; resetting a critical dimension (CD) of a peculiar pattern; compensating an optical proximity effect; and manufacturing a mask. The method provides an improved way of improving more accurately CD uniformity by performing optical proximity correction with respect to a pattern to which a bias rule is difficult to apply due to an absence of an adjacent pattern.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: February 14, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Cheol Kyun Kim
  • Patent number: 8110341
    Abstract: A method is disclosed for manufacturing a semiconductor device. The method includes: forming a substrate including a cell region and an outside region, wherein the outside region is adjacent to the cell region; forming a line-shaped pattern over the substrate using a first exposure mask so that the line-shaped spacer pattern extends from the cell region to the outside region; and patterning the line-shaped pattern in the cell region into a bar pattern while removing the line-shaped pattern in the outside region using a second exposure mask, wherein the line-shaped pattern can be formed using a spacer patterning technology (SPT) or a double pattern technology (DPT).
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: February 7, 2012
    Assignee: Hynix Semiconductor, Inc.
    Inventor: Jae Seung Choi
  • Patent number: 8088263
    Abstract: The present invention is a device for controlling sputter coating deposition to at least one surface of at least one substrate. The device includes a magnetic structure having a plurality of electrically isolated and magnetically coupled magnetic pole piece structures. A plurality of magnetic concentric rings is mounted behind at least one target surface. A central upright common magnetic core connects the plurality of magnetic pole piece structures. A plurality of upright pole pieces arranged parallel to each other is attached to each of the magnetic pole piece structures and arranged at midpoints of the plurality of magnetic concentric rings. The magnetic structure includes a plurality of electromagnetic coils wound over the plurality of magnetic pole piece structures arranged to form sets of coils. The sets of coils can be energized in forward or reverse mode thereby impacting the target at a greater angle resulting in higher angle particle ejection.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: January 3, 2012
    Inventor: Robert M. Smith
  • Patent number: 8071263
    Abstract: A reflective mask comprising: a reflective layer that is arranged on a surface on a side on which EUV light is irradiated and reflects the EUV light; a buffer layer containing Cr that is arranged on a side of the reflective layer on which the EUV light is irradiated and covers an entire surface of the reflective layer; and a non-reflective layer that is arranged on a side of the buffer layer on which the EUV light is irradiated and in which an absorber that absorbs the irradiated EUV light is arranged in a position corresponding to a mask pattern to be reduced and transferred onto a wafer.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: December 6, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryoichi Inanami, Yumi Nakajima, Masamitsu Itoh
  • Patent number: 8070917
    Abstract: A reactive sputtering method for application of a bias voltage to a supporting substrate in formation of a film of a metal compound on the supporting substrate according to a bias sputtering method; wherein a supporting substrate conveyor unit and a cathode that includes a target facing the supporting substrate conveyor unit are provided; the supporting substrate is conveyed between the supporting substrate conveyor unit and the target for formation of a film of a metal compound on the supporting substrate; magnets are provided adjacent to the supporting substrate conveyor unit on a side thereof opposite to that of the supporting substrate, such that a magnetic field is closed and a continuing tunnel part of parallel or nearly parallel arched magnetic force lines forms an oval or a polygon on the supporting substrate, the magnets each having a first magnetic pole of an S pole or an N pole and a second magnetic pole opposite to the first magnetic pole, the second magnetic pole surrounding the first magnetic po
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: December 6, 2011
    Assignee: Fujifilm Corporation
    Inventor: Naoki Tsukamoto
  • Patent number: 8048598
    Abstract: A method of fabricating a halftone mask, which includes the steps of: forming shielding patterns on a transparent substrate; forming a first halftone transmission pattern on the transparent substrate between the shielding patterns; and forming a second halftone transmission pattern on the first halftone transmission pattern, wherein a width of the second halftone transmission pattern is narrower than a width of the first halftone transmission pattern, wherein the shielding patterns are in contact with a border of the first halftone transmission pattern; and wherein portions of the first halftone transmission pattern, at gaps that are present in between the shielding patterns and the second halftone transmission pattern, are uncovered by the second halftone transmission pattern.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: November 1, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Ji No Lee
  • Patent number: 8048590
    Abstract: A photolithography mask includes a design feature located in an isolated or semi-isolated region of the mask and a plurality of parallel linear assist features disposed substantially perpendicular to the design feature. The plurality of parallel linear assist features may include a first series of parallel assist features disposed on a first side of the design feature and perpendicularly thereto, and a second series of parallel assist features disposed on a second side of the design feature and perpendicularly thereto.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: November 1, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yung-Sung Yen, Kuei Shun Chen, Chien-Wen Lai, Cherng-Shyan Tsay
  • Patent number: 7985296
    Abstract: A sample fixing device of an evaporation machine includes a first transmission mechanism having a first rotation axis driven by a driving device and a first rotation wheel; a fixing plate and a support frame; a pair of second transmission mechanisms at opposite sides of the first rotation wheel, and including a second rotation wheel revolving around the first rotation wheel, a second rotation axis passing and attached to the second rotation wheel and the fixing plate, and a third rotation wheel connected to the second rotation axis; and a third transmission mechanism including a fourth rotation wheel driven by the third rotation wheel and a sample support axis passing and attached to the fourth wheel and the support arm; wherein an axes of the sample support axis perpendiculars to an extension axes of the first rotation axis so that the sample fixing device can rotate and revolve.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: July 26, 2011
    Inventors: Ching-Ching Chen, Chen-Chun Hsu