Patents by Inventor Kyoko Izuha

Kyoko Izuha has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8112724
    Abstract: A method of designing a semiconductor integrated circuit includes a cell arranging and wiring step of arranging and wiring cells for creating a physical layout, a design-rule checking step of verifying a shape of a second physical layout including the cells of the physical layout with reference to a rule library for design rule check, a mask-data creating step of creating mask data corresponding to the physical layout using the second physical layout when the design rule is satisfied in the design-rule checking step, a mask-data processing step of performing, when the design rule is not satisfied in the design-rule checking step, mask data processing for the verification-object second physical layout, and a mask-data creating step for creating mask data corresponding to the physical layout using the second physical layout subjected to the mask data processing in the mask-data processing data.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 7, 2012
    Assignee: Sony Corporation
    Inventor: Kyoko Izuha
  • Publication number: 20120025061
    Abstract: A solid-state imaging device includes: a semiconductor substrate including a light receiving surface which is divided according to pixels arranged in a matrix shape and is formed with a photoelectric converting section; an electrochromic film which is formed on the semiconductor substrate on a light incident path corresponding to the photoelectric converting section, in a portion of pixels selected from the pixels, and has light transmittance changing from a first transmittance to a second transmittance according to voltage applied thereto; a lower electrode which is formed below the electrochromic film; and an upper electrode which is formed above the electrochromic film.
    Type: Application
    Filed: July 18, 2011
    Publication date: February 2, 2012
    Applicant: SONY CORPORATION
    Inventors: Kyoko Izuha, Kouichi Harada
  • Patent number: 8078996
    Abstract: A pattern verification method includes preparing a desired pattern and a mask pattern forming the desired pattern on a substrate, defining at least one evaluation point on an edge of the desired pattern, defining at least one process parameter to compute the transferred/formed pattern, defining a reference value and a variable range for each of the process parameters, and computing a positional displacement for each first points corresponding to the evaluation point, first points computed using correction mask pattern and a plurality of combinations of parameter values obtained by varying the process parameters within the variable range or within the respective variable ranges. The positional displacement is a displacement between first point and the evaluation point. The method further includes computing a statistics of the positional displacements for each of the evaluation points, and outputting information modifying the mask pattern according to the statistics.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 13, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoko Izuha, Shigeki Nojima, Toshiya Kotani, Satoshi Tanaka
  • Publication number: 20110302543
    Abstract: A pattern designing method, including the steps of carrying out transfer simulation calculation and step simulation calculation by using physical layout data produced from circuit design data, and comparing a result of the transfer simulation calculation and the step simulation calculation with a preset standard; and carrying out calculation for electrical characteristics by using parameters obtained from the physical layout when as a result of the comparison, the preset standard is fulfilled, and carrying out calculation for the electrical characteristics by reflecting the result of the transfer simulation calculation and the step simulation calculation in the parameters when as the result of the comparison, the preset standard is not fulfilled, thereby extracting the parameters.
    Type: Application
    Filed: August 19, 2011
    Publication date: December 8, 2011
    Applicant: SONY CORPORATION
    Inventor: Kyoko Izuha
  • Publication number: 20110285881
    Abstract: A solid-state imaging device includes: a semiconductor substrate having a light receiving surface sectioned for red, green, blue, and white pixels arranged in a matrix with photodiodes formed thereon; color filters formed on the semiconductor substrate in light incident paths to the photodiodes of the respective formation regions of the red, green, and blue pixels and respectively transmitting lights in red, green, and blue wavelength regions; and photochromic films formed on the semiconductor substrate in the light incident path to the photodiodes in the formation regions of at least some of the white pixels, and containing a photochromic material having light transmittance varying in response to incident light intensity in a predetermined wavelength region, wherein a half period of the light transmittance of the photochromic films is shorter than one frame as a period in which pixel signals obtained in the pixels are read out with respect to all pixels.
    Type: Application
    Filed: April 19, 2011
    Publication date: November 24, 2011
    Applicant: SONY CORPORATION
    Inventors: Kyoko Izuha, Kouichi Harada
  • Publication number: 20110242349
    Abstract: A solid-state image capturing device includes: a semiconductor substrate having a photosensitive surface including a matrix of pixels as respective photoelectric converters; and a photochromic film disposed in a light path through which light is applied to each of the photoelectric converters, the photochromic film being made of a photochromic material having a light transmittance variable depending on the intensity of applied light in a predetermined wavelength range; wherein the light transmittance has a half-value period shorter than one frame during which pixel signals generated by the pixels are read from all the pixels.
    Type: Application
    Filed: March 16, 2011
    Publication date: October 6, 2011
    Applicant: Sony Corporation
    Inventors: Kyoko Izuha, Kouichi Harada
  • Patent number: 8028267
    Abstract: An embodiment of the invention provides a pattern designing method, including the steps of carrying out transfer simulation calculation and step simulation calculation by using physical layout data produced from circuit design data, and comparing a result of the transfer simulation calculation and the step simulation calculation with a preset standard; and carrying out calculation for electrical characteristics by using parameters obtained from the physical layout when as a result of the comparison, the preset standard is fulfilled, and carrying out calculation for the electrical characteristics by reflecting the result of the transfer simulation calculation and the step simulation calculation in the parameters when as the result of the comparison, the preset standard is not fulfilled, thereby extracting the parameters.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: September 27, 2011
    Assignee: Sony Corporation
    Inventor: Kyoko Izuha
  • Publication number: 20110108705
    Abstract: A solid-state imaging device includes: a semiconductor substrate that includes a photodiode separately provided for each of pixels disposed in a matrix on a light-receiving surface; a first insulating film formed on the semiconductor substrate so as to cover multilayer wiring formed on and in contact with the semiconductor substrate, wherein the first insulating film is formed using material of a first refractive index lower than a refractive index of the semiconductor substrate for at least bottom surface and top surface portions of the first insulating film; a second insulating film of a second refractive index higher than the first refractive index formed on the first insulating film; a third insulating film of a third refractive index higher than the second refractive index formed on the second insulating film; and a color filter formed on the third insulating film in a corresponding manner with each pixel so as to transmit light in a wavelength region of red, green, or blue.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 12, 2011
    Applicant: SONY CORPORATION
    Inventors: Kyoko Izuha, Hiromi Okazaki, Yoshiaki Kitano
  • Patent number: 7925090
    Abstract: A method of determining a photo mask, includes specifying a mask pattern for a photo mask for a first exposure apparatus, specifying a plurality of exposure conditions allowed to be set for a second exposure apparatus, predicting a projection image of the mask pattern to be projected on a substrate by the second exposure apparatus, for each of the exposure conditions, predicting a processed pattern to be formed on a substrate surface on the basis of the projection image, for each of the exposure conditions, determining whether or not the processed pattern meets a predetermined condition for each of the exposure conditions, and determining that the photo mask is applicable to the second exposure apparatus if the processed pattern meets the predetermined condition for at least one of the exposure conditions.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: April 12, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiya Kotani, Kazuya Fukuhara, Kyoko Izuha
  • Publication number: 20110041104
    Abstract: A semiconductor circuit pattern design method includes the following operations. A design pattern is created by placing a plurality of cells in each functional block as a unit of the semiconductor circuit and executing routing among the plurality of placed cells. Mask pattern data based on the design pattern is created. A predictive pattern to be formed on the substrate by the mask pattern data is predicted. A difference amount between the predictive pattern and a target pattern to be formed on the substrate by the mask pattern data is checked. The difference amount is compared with a predetermined allowable variation amount. If the difference amount is larger than the allowable variation amount in the comparison, at least one of placement and routing of the cells in the design pattern corresponding to the mask pattern data used to predict the predictive pattern is corrected.
    Type: Application
    Filed: July 12, 2010
    Publication date: February 17, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kyoko Izuha, Fumihiro Minami, Toshiaki Ueda, Ryuji Ogawa, Satoshi Tanaka
  • Patent number: 7851236
    Abstract: A film thickness prediction method of predicting a film thickness of a second processed layer after planarization includes the steps of: creating first to third actual measurement databases; obtaining a reference film thickness of a second processed layer formed on a region in which no circuit pattern exists; segmenting a first processed layer to be formed on a substrate into grid-like meshes, and obtaining a pattern area ratio occupied by a circuit pattern to be formed on a first processed layer in each mesh and further obtaining a circumferential length of the circuit pattern in each mesh; obtaining an initial thickness of the second processed layer in each mesh; and predicting the film thickness of the second processed layer after planarization from an initial film thickness predicted value and an amount of planarization Hij of the second processed layer in the mesh.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: December 14, 2010
    Assignee: Sony Corporation
    Inventors: Kyoko Izuha, Keiichi Maeda, Naoki Komai
  • Publication number: 20100299643
    Abstract: A method for manufacturing a semiconductor device includes the steps of reading physical layout data of a circuit to be manufactured and performing calculation to modify a pattern width in the physical layout data by a predetermined amount; reading a physical layout and analyzing a pattern that is predicted to remain as a step difference of a predetermined amount or more in a case where a planarization process is performed on a planarizing film on a pattern by a quantitative calculation by using at least one of a density of patterns, a pattern width, and a peripheral length of a range of interest and a range in the vicinity of the range of interest; and reading data of the pattern that is predicted to remain as a step difference, and making a correction to a layout in which a step difference of a predetermined amount or more does not remain.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 25, 2010
    Applicant: Sony Corporation
    Inventors: Kyoko Izuha, Shunichi Shibuki, Takashi Sakairi
  • Patent number: 7788626
    Abstract: A pattern data correction method is disclosed, which comprises preparing an integrated circuit pattern, setting a tolerance to the pattern that is allowable error range when the pattern is transferred on a substrate, creating a target pattern within the tolerance, and making correction for the target pattern to make a first correction pattern under a predetermined condition.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: August 31, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeki Nojima, Satoshi Tanaka, Toshiya Kotani, Kyoko Izuha, Soichi Inoue
  • Patent number: 7784020
    Abstract: A semiconductor circuit pattern design method includes the following operations. A design pattern is created by placing a plurality of cells in each functional block as a unit of the semiconductor circuit and executing routing among the plurality of placed cells. Mask pattern data based on the design pattern is created. A predictive pattern to be formed on the substrate by the mask pattern data is predicted. A difference amount between the predictive pattern and a target pattern to be formed on the substrate by the mask pattern data is checked. The difference amount is compared with a predetermined allowable variation amount. If the difference amount is larger than the allowable variation amount in the comparison, at least one of placement and routing of the cells in the design pattern corresponding to the mask pattern data used to predict the predictive pattern is corrected.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: August 24, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoko Izuha, Fumihiro Minami, Toshiaki Ueda, Ryuji Ogawa, Satoshi Tanaka
  • Publication number: 20100207242
    Abstract: Disclosed herein is a capacitive element formed by multilayer wirings, wherein a total capacitance, intralayer capacitance and interlayer capacitance are calculated for a plurality of device structures by changing parameters relating to the multilayer wirings in an integrated circuit, a device structure is identified, from among the plurality of device structures, whose difference in the total capacitance between the device structures is equal to or less than a predetermined level and at least either of whose ratio of the intralayer capacitance to the total capacitance or ratio of the interlayer capacitance to the total capacitance satisfies a predetermined condition, and the parameters of the device structure satisfying the predetermined condition are determined as the parameters of the multilayer wirings.
    Type: Application
    Filed: January 5, 2010
    Publication date: August 19, 2010
    Applicant: Sony Corporation
    Inventors: Kyoko Izuha, Hiroaki Ammo, Yoshiyuki Enomoto
  • Publication number: 20100035367
    Abstract: A film thickness prediction method of predicting a film thickness of a second processed layer after planarization includes the steps of: creating first to third actual measurement databases; obtaining a reference film thickness of a second processed layer formed on a region in which no circuit pattern exists; segmenting a first processed layer to be formed on a substrate into grid-like meshes, and obtaining a pattern area ratio occupied by a circuit pattern to be formed on a first processed layer in each mesh and further obtaining a circumferential length of the circuit pattern in each mesh; obtaining an initial thickness of the second processed layer in each mesh; and predicting the film thickness of the second processed layer after planarization from an initial film thickness predicted value and an amount of planarization Hij of the second processed layer in the mesh.
    Type: Application
    Filed: August 3, 2009
    Publication date: February 11, 2010
    Applicant: SONY CORPORATION
    Inventors: Kyoko Izuha, Keiichi Maeda, Naoki Komai
  • Patent number: 7631287
    Abstract: A method in which a desired pattern is compared with a finish pattern to be formed on a wafer, which is predicted from a design pattern, based on a calculation of a light beam intensity, and a deviation quantity of the finish pattern from the desired pattern at each edge of the finish pattern and the desired pattern is calculated, comprising setting a reference light beam intensity for setting the desired pattern on a wafer, setting an evaluation point for comparison of the finish pattern with the desired pattern, calculating a light beam intensity at the evaluation point, calculating a differentiation value of the light beam intensity at the evaluation point, calculating an intersection of the differentiation value with the reference light beam intensity, and calculating a difference between the intersection and the evaluation point, the difference defining an edge deviation quantity of the finish pattern from the desired pattern.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: December 8, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoko Izuha, Toshiya Kotani, Satoshi Tanaka
  • Publication number: 20090291512
    Abstract: Information on a transfer pattern created from a design pattern corresponding to a pattern to be formed on a substrate is acquired as pattern transfer information. The design pattern is compared with the transfer pattern and, on the basis of the feature quantity obtained from the comparison, the pattern transfer information and the design pattern are classified. A threshold value is set for the feature quantity and, on the basis of the threshold value, the pattern transfer information and the design pattern are further classified. Then, verification is conducted to see if the transfer pattern satisfies the threshold value.
    Type: Application
    Filed: May 21, 2009
    Publication date: November 26, 2009
    Inventors: Kyoko IZUHA, Satoshi TANAKA
  • Publication number: 20090265680
    Abstract: A pattern verification method comprising preparing a desired pattern and a mask pattern forming the desired pattern on a substrate, defining at least one evaluation point on an edge of the desired pattern, defining at least one process parameter to compute the transferred/formed pattern, defining a reference value and a variable range for each of the process parameters, computing a positional displacement for each first points corresponding to the evaluation point, first points computed using correction mask pattern and a plurality of combinations of parameter values obtained by varying the process parameters within the variable range or within the respective variable ranges, the positional displacement being displacement between first point and the evaluation point, computing a statistics of the positional displacements for each of the evaluation points, and outputting information modifying the mask pattern according to the statistics.
    Type: Application
    Filed: June 19, 2009
    Publication date: October 22, 2009
    Inventors: Kyoko Izuha, Shigeki Nojima, Toshiya Kotani, Satoshi Tanaka
  • Patent number: 7571417
    Abstract: A pattern verification method includes preparing a desired pattern and a mask pattern forming the desired pattern on a substrate, defining at least one evaluation point on an edge of the desired pattern, defining at least one process parameter to compute the transferred/formed pattern, defining a reference value and a variable range for each of the process parameters, and computing a positional displacement for each first points corresponding to the evaluation point, first points computed using correction mask pattern and a plurality of combinations of parameter values obtained by varying the process parameters within the variable range or within the respective variable ranges. The positional displacement is a displacement between first point and the evaluation point. The method further includes computing a statistics of the positional displacements for each of the evaluation points, and outputting information modifying the mask pattern according to the statistics.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: August 4, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoko Izuha, Shigeki Nojima, Toshiya Kotani, Satoshi Tanaka