Patents by Inventor Yoshiaki Onimaru

Yoshiaki Onimaru 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: 10886103
    Abstract: In one embodiment, a data processing method is for processing data in a writing apparatus performing multiple writing by using multiple beams. The data is for controlling an irradiation amount for each beam. The method includes generating irradiation amount data for each of a plurality of layers, the irradiation amount data defining an irradiation amount for each of a plurality of irradiation position, and the plurality of layers corresponding to writing paths in multiple writing, performing a correction process on the irradiation amounts defined in the irradiation amount data provided for each layer, calculating a sum of the irradiation amounts for the respective irradiation positions defined in the corrected irradiation amount data, comparing the sums between the plurality of layers, and determining whether or not an error has occurred in the correction process based on the comparison result.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: January 5, 2021
    Assignee: NuFlare Technology, Inc.
    Inventors: Kei Hasegawa, Yoshiaki Onimaru, Hayato Kimura
  • Publication number: 20190378688
    Abstract: In one embodiment, a data processing method is for processing data in a writing apparatus performing multiple writing by using multiple beams. The data is for controlling an irradiation amount for each beam. The method includes generating irradiation amount data for each of a plurality of layers, the irradiation amount data defining an irradiation amount for each of a plurality of irradiation position, and the plurality of layers corresponding to writing paths in multiple writing, performing a correction process on the irradiation amounts defined in the irradiation amount data provided for each layer, calculating a sum of the irradiation amounts for the respective irradiation positions defined in the corrected irradiation amount data, comparing the sums between the plurality of layers, and determining whether or not an error has occurred in the correction process based on the comparison result.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Applicant: NuFlare Technology, Inc.
    Inventors: Kei HASEGAWA, Yoshiaki ONIMARU, Hayato KIMURA
  • Patent number: 10475621
    Abstract: A drawing device according to an embodiment includes: a stage configured to be capable of having a processing target mounted thereon; an aperture member including a plurality of apertures corresponding to a plurality of beams irradiated to the processing target; a data generator configured to generate gradation data indicating irradiation time data with n bits (n is a positive integer) with respect to positions of respective coordinates of the beams; a calculator configured to perform a logical addition operation of the gradation data of the respective positions of the coordinates; and a controller configured to control the aperture member based on the gradation data and a result of the logical addition operation.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: November 12, 2019
    Assignee: NUFLARE TECHNOLOGY, INC.
    Inventors: Kei Hasegawa, Hayato Kimura, Hideo Inoue, Yoshiaki Onimaru
  • Publication number: 20180350560
    Abstract: A drawing device according to an embodiment includes: a stage configured to be capable of having a processing target mounted thereon; an aperture member including a plurality of apertures corresponding to a plurality of beams irradiated to the processing target; a data generator configured to generate gradation data indicating irradiation time data with n bits (n is a positive integer) with respect to positions of respective coordinates of the beams; a calculator configured to perform a logical addition operation of the gradation data of the respective positions of the coordinates; and a controller configured to control the aperture member based on the gradation data and a result of the logical addition operation.
    Type: Application
    Filed: May 29, 2018
    Publication date: December 6, 2018
    Applicant: NUFLARE TECHNOLOGY, INC.
    Inventors: Kei HASEGAWA, Hayato Kimura, Hideo Inoue, Yoshiaki Onimaru
  • Patent number: 9953800
    Abstract: According to one embodiment, in a multi-charged particle beam writing apparatus, a blanking plate includes a plurality of first buffers connected in series, second buffers in a plurality of stages connected in series between the first buffer and a blanker, and an error detection processing circuitry performing error detection on data stored in the first buffer and the second buffers. The blanking control data transfers to the corresponding blanker via the first buffer and the second buffers. In a case where the error detection processing circuitry detects an error, the control processing circuitry retransmits the blanking control data to the blanking plate with regard to a shot having the error detected therein and a shot which comes, in a shot order, after the shot having the error detected therein.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: April 24, 2018
    Assignee: NuFlare Technology, Inc.
    Inventors: Kei Hasegawa, Hayato Kimura, Hideo Inoue, Yoshiaki Onimaru
  • Publication number: 20160322196
    Abstract: According to one embodiment, in a multi-charged particle beam writing apparatus, a blanking plate includes a plurality of first buffers connected in series, second buffers in a plurality of stages connected in series between the first buffer and a blanker, and an error detection processing circuitry performing error detection on data stored in the first buffer and the second buffers. The blanking control data transfers to the corresponding blanker via the first buffer and the second buffers. In a case where the error detection processing circuitry detects an error, the control processing circuitry retransmits the blanking control data to the blanking plate with regard to a shot having the error detected therein and a shot which comes, in a shot order, after the shot having the error detected therein.
    Type: Application
    Filed: April 25, 2016
    Publication date: November 3, 2016
    Applicant: NuFlare Technology, Inc.
    Inventors: Kei HASEGAWA, Hayato KIMURA, Hideo INOUE, Yoshiaki ONIMARU
  • Patent number: 7476881
    Abstract: There is provided a charged beam drawing apparatus which includes main/sub two-stage deflectors, divides a main deflection drawing region on a sample into sub deflection drawing regions determined by the deflection width of the sub deflector, selects one of the sub deflection drawing regions by use of the main deflector and draws shots in the selected sub deflection drawing region by use of the sub deflector. A sub deflection driving unit includes a sub deflection sensitivity correction circuit, a sub deflection astigmatic correction circuit, an adder circuit which adds an output of the sub deflection sensitivity correction circuit and an output of the sub deflection astigmatic correction circuit, and a deflection amplifier which additionally applies an output of the adder circuit to the sub deflector.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: January 13, 2009
    Assignee: NuFlare Technology, Inc.
    Inventors: Kiyoshi Hattori, Kenji Ohtoshi, Tomohiro Iijima, Yoshiaki Onimaru, Hayato Kimura, Tateki Watanabe
  • Publication number: 20070114461
    Abstract: There is provided a charged beam drawing apparatus which includes main/sub two-stage deflectors, divides a main deflection drawing region on a sample into sub deflection drawing regions determined by the deflection width of the sub deflector, selects one of the sub deflection drawing regions by use of the main deflector and draws shots in the selected sub deflection drawing region by use of the sub deflector. A sub deflection driving unit includes a sub deflection sensitivity correction circuit, a sub deflection astigmatic correction circuit, an adder circuit which adds an output of the sub deflection sensitivity correction circuit and an output of the sub deflection astigmatic correction circuit, and a deflection amplifier which additionally applies an output of the adder circuit to the sub deflector.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 24, 2007
    Inventors: Kiyoshi HATTORI, Kenji Ohtoshi, Tomohiro Iijima, Yoshiaki Onimaru, Hayato Kimura, Tateki Watanabe