Patents by Inventor Takeshi Okagaki

Takeshi Okagaki 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).

  • Publication number: 20240128268
    Abstract: A semiconductor device includes channel layers on a substrate, the channel layers being spaced apart from each other, and having first side surfaces and second side surfaces opposing each other in a first direction, a gate electrode surrounding the channel layers and having a first end portion and a second end portion, opposing each other in the first direction, and a source/drain layer on a first side of the gate electrode and in contact with the channel layers, a portion of the source/drain layer protruding further than the first end portion of the gate electrode in the first direction, wherein a first distance from the first end portion of the gate electrode to the first side surfaces of the channel layers is shorter than a second distance from the second end portion of the gate electrode to the second side surfaces of the channel layers.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 18, 2024
    Inventors: Krishna Kumar BHUWALKA, Kyoung Min CHOI, Takeshi OKAGAKI, Dong Won KIM, Jong Chol KIM
  • Publication number: 20240096960
    Abstract: An integrated circuit device includes a back side interconnection structure extending in a first horizontal direction. An active substrate includes a fin-type active area extending in the first horizontal direction on the back side interconnection structure. A metal silicide film is between the back side interconnection structure and the active substrate. A plurality of gate structures extends in a second horizontal direction perpendicular to the first horizontal direction on the active substrate. A first source/drain area and a second source/drain area are spaced apart from each other in the first horizontal direction with the plurality of gate structures therebetween on the active substrate. The first source/drain area directly contacts the active substrate. The second source/drain area is spaced apart from the active substrate and insulated from the active substrate.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 21, 2024
    Inventors: Seunghyun SONG, Minsuk Kim, Pilkwang Kim, Takeshi Okagaki, Geunmyeong Kim, Ahyoung kim, Yoonsuk Kim
  • Patent number: 11876097
    Abstract: A semiconductor device includes channel layers on a substrate, the channel layers being spaced apart from each other, and having first side surfaces and second side surfaces opposing each other in a first direction, a gate electrode surrounding the channel layers and having a first end portion and a second end portion, opposing each other in the first direction, and a source/drain layer on a first side of the gate electrode and in contact with the channel layers, a portion of the source/drain layer protruding further than the first end portion of the gate electrode in the first direction, wherein a first distance from the first end portion of the gate electrode to the first side surfaces of the channel layers is shorter than a second distance from the second end portion of the gate electrode to the second side surfaces of the channel layers.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: January 16, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Krishna Kumar Bhuwalka, Kyoung Min Choi, Takeshi Okagaki, Dong Won Kim, Jong Chol Kim
  • Publication number: 20230261079
    Abstract: Disclosed are semiconductor devices and fabrication methods thereof. The semiconductor device includes a substrate including first and second regions, a device isolation pattern in the substrate, a lower separation dielectric pattern on the first region of the substrate, first channel patterns on the lower separation dielectric pattern, a first gate electrode on the first channel patterns and including a first gate part between the lower separation dielectric pattern and a lowermost first channel pattern, and first source/drain patterns on opposite sides of the first gate electrode and in contact with lateral surfaces of the first channel patterns. A bottom surface of the lower separation dielectric pattern is at a level higher than or equal to that of a bottom surface of the device isolation pattern. A top end of the lower separation dielectric pattern is at a level higher than that of a bottom surface of the first gate part.
    Type: Application
    Filed: November 15, 2022
    Publication date: August 17, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Seunghyun SONG, Pilkwang KIM, Joohyung YOU, Sungmin KIM, Yonghee PARK, Young-Seok SONG, Takeshi OKAGAKI
  • Publication number: 20210366910
    Abstract: A semiconductor device includes channel layers on a substrate, the channel layers being spaced apart from each other, and having first side surfaces and second side surfaces opposing each other in a first direction, a gate electrode surrounding the channel layers and having a first end portion and a second end portion, opposing each other in the first direction, and a source/drain layer on a first side of the gate electrode and in contact with the channel layers, a portion of the source/drain layer protruding further than the first end portion of the gate electrode in the first direction, wherein a first distance from the first end portion of the gate electrode to the first side surfaces of the channel layers is shorter than a second distance from the second end portion of the gate electrode to the second side surfaces of the channel layers.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Inventors: Krishna Kumar BHUWALKA, Kyoung Min CHOI, Takeshi OKAGAKI, Dong Won KIM, Jong Chol KIM
  • Patent number: 11133311
    Abstract: A semiconductor device includes channel layers on a substrate, the channel layers being spaced apart from each other, and having first side surfaces and second side surfaces opposing each other in a first direction, a gate electrode surrounding the channel layers and having a first end portion and a second end portion, opposing each other in the first direction, and a source/drain layer on a first side of the gate electrode and in contact with the channel layers, a portion of the source/drain layer protruding further than the first end portion of the gate electrode in the first direction, wherein a first distance from the first end portion of the gate electrode to the first side surfaces of the channel layers is shorter than a second distance from the second end portion of the gate electrode to the second side surfaces of the channel layers.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: September 28, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Krishna Kumar Bhuwalka, Kyoung Min Choi, Takeshi Okagaki, Dong Won Kim, Jong Chol Kim
  • Patent number: 10903214
    Abstract: The semiconductor device includes a first inverter and a second inverter which is connected thereto in series. Each of the first and the second inverters includes a p-channel transistor and an n-channel transistor, respectively. The number of projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the second inverter is smaller than the number of the projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the first inverter.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: January 26, 2021
    Assignee: Renesas Electronics Corporation
    Inventor: Takeshi Okagaki
  • Patent number: 10796068
    Abstract: A standard cell design system is provided. The standard cell design system includes at least one processor configured to implement: a control engine that determines planar parameters and vertical parameters of a target standard cell, a three-dimensional structure generating engine that generates a three-dimensional structure of the target standard cell based on the planar parameters and the vertical parameters, an extraction engine that extracts a standard cell model of the target standard cell from the three-dimensional structure, an assessment engine that performs a plurality of assessment operations based on the standard cell model, and an auto-optimizing engine that adjusts, based on a machine learning algorithm, the planar parameters and the vertical parameters based on results of the plurality of assessment operations.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: October 6, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Uihui Kwon, Weiyi Qi, Yang Lu, Saetbyeol Ahn, Takeshi Okagaki
  • Patent number: 10734374
    Abstract: An area of a semiconductor device having a FINFET can be reduced. The drain regions of an n-channel FINFET and a p-channel FINFET are extracted by two second local interconnects from a second Y gird between a gate electrode and a dummy gate adjacent thereto, to a third Y grid adjacent to the second Y gird. These second local interconnects are connected by a first local interconnect extending in the X direction in the third Y grid. According to such a cell layout, although the number of grids is increased by one because of the arrangement of the first local interconnect, the length in the X direction can be reduced. As a result, the cell area of the unit cell can be reduced while a space between the first and second local interconnects is secured.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: August 4, 2020
    Assignee: Renesas Electronics Corporation
    Inventors: Takeshi Okagaki, Koji Shibutani, Makoto Yabuuchi, Nobuhiro Tsuda
  • Publication number: 20200119017
    Abstract: The semiconductor device includes a first inverter and a second inverter which is connected thereto in series. Bach of the first and the second inverters includes a p-channel transistor and art n-channel transistor, respectively. The number of projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the second inverter is smaller than the number of the projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the first inverter.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventor: Takeshi OKAGAKI
  • Publication number: 20200082051
    Abstract: A standard cell design system is provided. The standard cell design system includes at least one processor configured to implement: a control engine that determines planar parameters and vertical parameters of a target standard cell, a three-dimensional structure generating engine that generates a three-dimensional structure of the target standard cell based on the planar parameters and the vertical parameters, an extraction engine that extracts a standard cell model of the target standard cell from the three-dimensional structure, an assessment engine that performs a plurality of assessment operations based on the standard cell model, and an auto-optimizing engine that adjusts, based on a machine learning algorithm, the planar parameters and the vertical parameters based on results of the plurality of assessment operations.
    Type: Application
    Filed: April 22, 2019
    Publication date: March 12, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Uihui Kwon, Weiyi Qi, Yang Lu, Saetbyeol Ahn, Takeshi Okagaki
  • Publication number: 20200066725
    Abstract: A semiconductor device includes channel layers on a substrate, the channel layers being spaced apart from each other, and having first side surfaces and second side surfaces opposing each other in a first direction, a gate electrode surrounding the channel layers and having a first end portion and a second end portion, opposing each other in the first direction, and a source/drain layer on a first side of the gate electrode and in contact with the channel layers, a portion of the source/drain layer protruding further than the first end portion of the gate electrode in the first direction, wherein a first distance from the first end portion of the gate electrode to the first side surfaces of the channel layers is shorter than a second distance from the second end portion of the gate electrode to the second side surfaces of the channel layers.
    Type: Application
    Filed: March 20, 2019
    Publication date: February 27, 2020
    Inventors: Krishna Kumar BHUWALKA, Kyoung Min CHOI, Takeshi OKAGAKI, Dong Won KIM, Jong Chol KIM
  • Patent number: 10541240
    Abstract: The semiconductor device includes a first inserter and a second inverter which is connected thereto in series. Each of the first and the second inserters includes a p-channel transistor and an n-channel transistor, respectively. The number of projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the second inverter is smaller than the number of the projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the first inverter.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: January 21, 2020
    Assignee: Renesas Electronics Corporation
    Inventor: Takeshi Okagaki
  • Publication number: 20190378831
    Abstract: An area of a semiconductor device having a FINFET can be reduced. The drain regions of an n-channel FINFET and a p-channel FINFET are extracted by two second local interconnects from a second Y gird between a gate electrode and a dummy gate adjacent thereto, to a third Y grid adjacent to the second Y gird. These second local interconnects are connected by a first local interconnect extending in the X direction in the third Y grid. According to such a cell layout, although the number of grids is increased by one because of the arrangement of the first local interconnect, the length in the X direction can be reduced. As a result, the cell area of the unit cell can be reduced while a space between the first and second local interconnects is secured.
    Type: Application
    Filed: August 19, 2019
    Publication date: December 12, 2019
    Applicant: Renesas Electronics Corporation
    Inventors: Takeshi OKAGAKI, Koji SHIBUTANI, Makoto YABUUCHI, Nobuhiro TSUDA
  • Patent number: 10490545
    Abstract: An area of a semiconductor device having a FINFET can be reduced. The drain regions of an n-channel FINFET and a p-channel FINFET are extracted by two second local interconnects from a second Y gird between a gate electrode and a dummy gate adjacent thereto, to a third Y grid adjacent to the second Y gird. These second local interconnects are connected by a first local interconnect extending in the X direction in the third Y grid. According to such a cell layout, although the number of grids is increased by one because of the arrangement of the first local interconnect, the length in the X direction can be reduced. As a result, the cell area of the unit cell can be reduced while a space between the first and second local interconnects is secured.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: November 26, 2019
    Assignee: Renesas Electronics Corporation
    Inventors: Takeshi Okagaki, Koji Shibutani, Makoto Yabuuchi, Nobuhiro Tsuda
  • Patent number: 10396802
    Abstract: In order to provide a semiconductor device capable of detecting HCI degradation of a semiconductor element in a simple structure, the semiconductor device includes an oscillation circuit including a plurality of logic gates of various driving forces which are formed by transistors and coupled in series, a frequency counter that measures an oscillation frequency of the oscillation circuit, and a comparator that compares the oscillation frequency of the oscillation circuit measured by the frequency counter with a predetermined value.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 27, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Mitsuhiko Igarashi, Kan Takeuchi, Takeshi Okagaki
  • Patent number: 10361685
    Abstract: There is to provide a semiconductor device capable of predicting a wear-out failure based on the degradation stress cumulative amount of power supply voltage and environmental temperature imposed on the device, which includes a ring oscillator having a plurality of stages of inverters, and a control circuit that emphasizes the voltage dependency and temperature dependency of an oscillation frequency of the ring oscillator or a control circuit that emphasizes the temperature dependency not the voltage dependency.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: July 23, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kan Takeuchi, Masaki Shimada, Takeshi Okagaki, Yoshio Takazawa
  • Publication number: 20190139958
    Abstract: The semiconductor device includes a first inserter and a second inverter which is connected thereto in series. Each of the first and the second inserters includes a p-channel transistor and an n-channel transistor, respectively. The number of projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the second inverter is smaller than the number of projection semiconductor layers each as the active region, of the channel and the n-channel transistors of the first inverter.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 9, 2019
    Inventor: Takeshi OKAGAKI
  • Publication number: 20180350792
    Abstract: An area of a semiconductor device having a FINFET can be reduced. The drain regions of an n-channel FINFET and a p-channel FINFET are extracted by two second local interconnects from a second Y gird between a gate electrode and a dummy gate adjacent thereto, to a third Y grid adjacent to the second Y gird. These second local interconnects are connected by a first local interconnect extending in the X direction in the third Y grid. According to such a cell layout, although the number of grids is increased by one because of the arrangement of the first local interconnect, the length in the X direction can be reduced. As a result, the cell area of the unit cell can be reduced while a space between the first and second local interconnects is secured.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 6, 2018
    Applicant: Renesas Electronics Corporation
    Inventors: Takeshi OKAGAKI, Koji SHIBUTANI, Makoto YABUUCHI, Nobuhiro TSUDA
  • Publication number: 20180254276
    Abstract: The semiconductor devise includes a first inverter and a second inverter which is connected thereto in series. Each of the first and the second inverters includes a p-channel transistor and an n-channel transistor, respectively. The number of projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the second inverter is smaller than the number of the projection semiconductor layers each as the active region of the p-channel and the n-channel transistors of the first inverter.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Inventor: Takeshi OKAGAKI