Patents by Inventor Jun Fujiki

Jun Fujiki 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: 11956959
    Abstract: A semiconductor memory device includes a semiconductor substrate including a diode formed in an upper layer portion of the semiconductor substrate, a first insulating film provided above the semiconductor substrate, a first conductive film provided above the first insulating film and coupled to the diode, a stacked body provided above the first conductive film, an insulator and an electrode film being stacked alternately in the stacked body, a semiconductor member piercing the stacked body and being connected to the first conductive film, and a charge storage member provided between the electrode film and the semiconductor member.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: April 9, 2024
    Assignee: Kioxia Corporation
    Inventors: Jun Fujiki, Shinya Arai, Kotaro Fujii
  • Publication number: 20240099007
    Abstract: A microelectronic device comprises a stack structure comprising a stack structure comprising a vertically alternating sequence of conductive structures and insulative structures arranged in tiers, the stack structure divided into block structures separated from one another by slot structures, strings of memory cells vertically extending through the block structures of the stack structure, the strings of memory cells individually comprising a channel material vertically extending through the stack structure, an additional stack structure vertically overlying the stack structure and comprising a vertical sequence of additional conductive structures and additional insulative structures arranged in additional tiers, first pillars extending through the additional stack structure and vertically overlying the strings of memory cells, each of the first pillars horizontally offset from a center of a corresponding string of memory cells, second pillars extending through the additional stack structure and vertically ove
    Type: Application
    Filed: November 30, 2023
    Publication date: March 21, 2024
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Matthew J. King, Sidhartha Gupta, Paolo Tessariol, Kunal Shrotri, Kye Hyun Baek, Kyle A. Ritter, Shuji Tanaka, Umberto Maria Meotto, Richard J. Hill, Matthew Holland
  • Publication number: 20240079058
    Abstract: Arrays of memory cells including a data line, a common source, a conductive element between the data line and the common source, a first string of series-connected memory cells having a first segment of series-connected memory cells selectively connected to the conductive element and a second segment of series-connected memory cells selectively connected to the conductive element and selectively connected to its first segment of series-connected memory cells through the conductive element, and a second string of series-connected memory cells having a first segment of series-connected memory cells selectively connected to the conductive element and a second segment of series-connected memory cells selectively connected to the conductive element and selectively connected to its first segment of series-connected memory cells through the conductive element, as well as apparatus containing such arrays of memory cells and methods of their operation, and methods of their formation.
    Type: Application
    Filed: August 23, 2023
    Publication date: March 7, 2024
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Jun Fujiki, Yoshiaki Fukuzumi
  • Publication number: 20240074201
    Abstract: A method used in forming a memory array comprising strings of memory cells comprises forming a stack comprising vertically-alternating different-composition first tiers and second tiers. The stack comprises lower channel-material strings extending through the first tiers and the second tiers. Conductive masses are formed that comprise at least one of conductively-doped semiconductive material or conductive metal material. Individual of the conductive masses are atop and directly electrically coupled to individual of the lower channel-material strings. Upper channel-material strings of select-gate transistors are formed directly above the stack. Individual of the upper channel-material strings are directly above and directly electrically coupled to individual of the conductive masses. Other embodiments, including structure, are disclosed.
    Type: Application
    Filed: August 23, 2022
    Publication date: February 29, 2024
    Applicant: Micron Technology, Inc.
    Inventors: Matthew J. King, Albert Fayrushin, Sidhartha Gupta, Jun Fujiki, Masashi Yoshida, Yiping Wang, Taehyun Kim, Arun Kumar Dhayalan
  • Publication number: 20240057337
    Abstract: Microelectronic devices include a stack structure comprising a vertically alternating sequence of insulative structures and conductive structures arranged in tiers. A series of pillars extends through the stack structure. At least one isolation structure extends through an upper stack portion of the stack structure. The at least one isolation structure protrudes into pillars of neighboring columns of pillars of the series of pillars. Conductive contacts are in electrical communication with the pillars into which the at least one isolation structure protrudes. Related methods and electronic systems are also disclosed.
    Type: Application
    Filed: October 23, 2023
    Publication date: February 15, 2024
    Inventors: Matthew J. King, David A. Daycock, Yoshiaki Fukuzumi, Albert Fayrushin, Richard J. Hill, Chandra S. Tiwari, Jun Fujiki
  • Patent number: 11903196
    Abstract: A microelectronic device comprises a stack structure comprising a stack structure comprising a vertically alternating sequence of conductive structures and insulative structures arranged in tiers, the stack structure divided into block structures separated from one another by slot structures, strings of memory cells vertically extending through the block structures of the stack structure, the strings of memory cells individually comprising a channel material vertically extending through the stack structure, an additional stack structure vertically overlying the stack structure and comprising a vertical sequence of additional conductive structures and additional insulative structures arranged in additional tiers, first pillars extending through the additional stack structure and vertically overlying the strings of memory cells, each of the first pillars horizontally offset from a center of a corresponding string of memory cells, second pillars extending through the additional stack structure and vertically ove
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: February 13, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Matthew J. King, Sidhartha Gupta, Paolo Tessariol, Kunal Shrotri, Kye Hyun Baek, Kyle A. Ritter, Shuji Tanaka, Umberto Maria Meotto, Richard J. Hill, Matthew Holland
  • Publication number: 20240021219
    Abstract: A microelectronic device comprises a stack structure, pillar structures, a conductive plug structure, a sense transistor, and selector transistors. The stack structure comprises a vertically alternating sequence of conductive material and insulative material, and is divided into blocks separated by dielectric slot structures. The blocks individually include sub-blocks horizontally extending in parallel with one another. The pillar structures vertically extend through one of the blocks of the stack structure. Each pillar structure of a group of the pillar structures is positioned within a different one of the sub-blocks of the one of the blocks than each other pillar structure of the group. The conductive plug structure is coupled to multiple of the pillar structures of the group of the pillar structures. The sense transistor is gated by the conductive plug structure. The selector transistors couple the sense transistor to a read source line structure and a digit line structure.
    Type: Application
    Filed: July 12, 2022
    Publication date: January 18, 2024
    Inventors: Yoshiaki Fukuzumi, Shuji Tanaka, Yoshihiko Kamata, Jun Fujiki, Tomoharu Tanaka
  • Publication number: 20230352091
    Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes tiers located one over another, each of the tiers including memory cells and a control gate for the memory cells, each of the tiers including first transistors connected in series between the control gate in a respective tier and a conductive line, and second transistors connected in series between the control gate in the respective tier and the conductive line, the second transistors connected in parallel with the first transistors between the control gate and the conductive line, conductive joints coupled to channel regions of the first and second transistors, and gates for the first transistors and second transistors, each of the gates shared by one of the first transistors and one of the second transistors.
    Type: Application
    Filed: May 2, 2022
    Publication date: November 2, 2023
    Inventors: Jun Fujiki, Yoshiaki Fukuzumi, Akira Goda
  • Patent number: 11800717
    Abstract: Microelectronic devices include a stack structure comprising a vertically alternating sequence of insulative structures and conductive structures arranged in tiers. A series of pillars extends through the stack structure. At least one isolation structure extends through an upper stack portion of the stack structure. The at least one isolation structure protrudes into pillars of neighboring columns of pillars of the series of pillars. Conductive contacts are in electrical communication with the pillars into which the at least one isolation structure protrudes. Related methods and electronic systems are also disclosed.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: October 24, 2023
    Inventors: Matthew J. King, David A. Daycock, Yoshiaki Fukuzumi, Albert Fayrushin, Richard J. Hill, Chandra S. Tiwari, Jun Fujiki
  • Patent number: 11678482
    Abstract: Arrays of memory cells might include a first upper data line, a second upper data line, a lower data line, a first pass gate selectively connected to the lower data line, a second pass gate connected to the first pass gate and selectively connected to the lower data line, a third pass gate selectively connected to the lower data line, a fourth pass gate connected to the third pass gate and selectively connected to the lower data line, unit column structures selectively connected to a respective one of the upper data lines and capacitively coupled to a first channel of a respective one of the pass gates, and control lines capacitively coupled to a second channel of a respective one of the pass gates.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: June 13, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Patent number: 11672117
    Abstract: A semiconductor memory device includes a semiconductor substrate, a first insulating film provided above the semiconductor substrate, a first conductive film provided above the first insulating film, a plurality of first electrode films provided above the first conductive film and stacked to be separated from each other, a semiconductor member extending in a stacking direction of the plurality of first electrode films, and a charge storage member provided between the semiconductor member and one of the plurality of first electrode films. The first conductive film includes a main portion disposed at least below the plurality of first electrode films, and a fine line portion extending from the main portion toward an end surface side of the semiconductor substrate. A width of the fine line portion is narrower than a width of the main portion.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 6, 2023
    Assignee: Kioxia Corporation
    Inventors: Kotaro Fujii, Jun Fujiki, Shinya Arai
  • Patent number: 11670379
    Abstract: Arrays of memory cells might include a data line, a source, a plurality of pass gates connected in series between the data line and the source, a plurality of unit column structures each having a respective plurality of series-connected non-volatile memory cells connected in series with a respective plurality of series-connected field-effect transistors, wherein a channel of each non-volatile memory cell of its respective plurality of series-connected non-volatile memory cells and a channel of each field-effect transistor of its respective plurality of series-connected field-effect transistors are selectively connected to one another, and a plurality of backside gate lines each connected to the second control gate of a respective pass gate of the plurality of pass gates, wherein, for each unit column structure of the plurality of unit column structures, the channel of a particular field-effect transistor of its respective plurality of field-effect transistors is capacitively coupled to the first channel of a
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: June 6, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Patent number: 11657880
    Abstract: Memory might include a plurality of series-connected non-volatile memory cells, a plurality of series-connected first field-effect transistors connected in series with the plurality of series-connected non-volatile memory cells, and a second field-effect transistor, wherein the channel of the second field-effect transistor is capacitively coupled to channels of the plurality of series-connected first field-effect transistors.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: May 23, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Publication number: 20230085034
    Abstract: Apparatus might include an array of memory cells comprising a plurality of strings of series-connected memory cells, a data line, a first field-effect transistor between the data line and a first string of series-connected memory cells, and a second field-effect transistor between the data line and a second string of series-connected memory cells, wherein a control gate of the first field-effect transistor is connected to a control gate of the second field-effect transistor, and wherein a channel of the first field-effect transistor was fabricated to have a first threshold voltage and a channel of the second field-effect transistor was fabricated to have a second threshold voltage, different than the first threshold voltage.
    Type: Application
    Filed: August 17, 2022
    Publication date: March 16, 2023
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masanobu Saito
  • Publication number: 20220383960
    Abstract: Methods of forming integrated circuit structures for a capacitive sense NAND memory include forming a first semiconductor overlying a dielectric, forming a second semiconductor to be in contact with a first end of the first semiconductor, forming a third semiconductor to be in contact with a second end of the first semiconductor opposite the first end of the first semiconductor, forming a vertical channel material structure overlying the first semiconductor and having a channel material capacitively coupled to the first semiconductor, and forming a plurality of series-connected field-effect transistors adjacent the vertical channel material structure.
    Type: Application
    Filed: July 29, 2022
    Publication date: December 1, 2022
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Publication number: 20220351785
    Abstract: Memory might include a plurality of series-connected non-volatile memory cells, a plurality of series-connected first field-effect transistors connected in series with the plurality of series-connected non-volatile memory cells, and a second field-effect transistor, wherein the channel of the second field-effect transistor is capacitively coupled to channels of the plurality of series-connected first field-effect transistors.
    Type: Application
    Filed: July 11, 2022
    Publication date: November 3, 2022
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Patent number: 11437106
    Abstract: An array of memory cells might include a first data line, a second data line, a source, a capacitance selectively connected to the first data line, a string of series-connected non-volatile memory cells between the first data line and the capacitance, and a pass gate selectively connected between the second data line and the source, wherein an electrode of the capacitance is capacitively coupled to a channel of the pass gate.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: September 6, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Publication number: 20220262820
    Abstract: Microelectronic devices include a stack structure comprising a vertically alternating sequence of insulative structures and conductive structures arranged in tiers. A series of pillars extends through the stack structure. At least one isolation structure extends through an upper stack portion of the stack structure. The at least one isolation structure protrudes into pillars of neighboring columns of pillars of the series of pillars. Conductive contacts are in electrical communication with the pillars into which the at least one isolation structure protrudes. Related methods and electronic systems are also disclosed.
    Type: Application
    Filed: May 2, 2022
    Publication date: August 18, 2022
    Inventors: Matthew J. King, David A. Daycock, Yoshiaki Fukuzumi, Albert Fayrushin, Richard J. Hill, Chandra S. Tiwari, Jun Fujiki
  • Patent number: 11414546
    Abstract: An object of the present invention is to provide a resin composition having excellent heat resistance and excellent thermal adhesiveness, so as to provide an electric insulating sheet having excellent heat resistance. In order to achieve the aforementioned object, the present invention provides a resin composition which contains a polyether sulfone resin and a resin having a specific melt viscosity, and contains at least a phenoxy resin other than the polyether sulfone resin.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: August 16, 2022
    Assignee: NITTO SHINKO CORPORATION
    Inventors: Yasuyuki Kihara, Takahiro Sakaguchi, Jun Fujiki
  • Patent number: 11386966
    Abstract: Memory might include a non-volatile memory cell, a capacitance selectively connected to the non-volatile memory cell, a field-effect transistor having a channel capacitively coupled to an electrode of the capacitance, and a controller for access of the non-volatile memory cell configured to cause the memory to increase a voltage level of the electrode of the capacitance, selectively discharge the voltage level of the electrode of the capacitance through the non-volatile memory cell responsive to a data state stored in the non-volatile memory cell, and determine whether the field-effect transistor is activated in response to a remaining voltage level of the electrode of the capacitance.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: July 12, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata