Patents by Inventor Ko-Tao Lee

Ko-Tao Lee 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: 11916130
    Abstract: A lateral bipolar junction transistor including an emitter region, base region and collector region laterally orientated over a type IV semiconductor substrate, each of the emitter region, the base region and the collector region being composed of a type III-V semiconductor material. A buried oxide layer is present between the type IV semiconductor substrate and the emitter region, the base region and the collector region. The buried oxide layer having a pedestal aligned with the base region.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: February 27, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kuen-Ting Shiu, Tak H. Ning, Jeng-Bang Yau, Cheng-Wei Cheng, Ko-Tao Lee
  • Patent number: 11797851
    Abstract: A Static Random Access Memory (SRAM) device in a binary neural network is provided. The SRAM device includes an SRAM inference engine having an SRAM computation architecture with a forward path that include multiple SRAM cells forming a chain of SRAM cells such that an output of a given one of the multiple SRAM cells is an input to a following one of the multiple SRAM cells. The SRAM computation architecture is configured to compute a prediction from an input. The SRAM computation architecture is configured to store ternary data and perform local computations on the ternary data.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: October 24, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Chia-Yu Chen, Jui-Hsin Lai, Ko-Tao Lee, Li-Wen Hung
  • Publication number: 20230121677
    Abstract: A Static Random Access Memory (SRAM) device in a binary neural network is provided. The SRAM device includes an SRAM inference engine having an SRAM computation architecture with a forward path that include multiple SRAM cells forming a chain of SRAM cells such that an output of a given one of the multiple SRAM cells is an input to a following one of the multiple SRAM cells. The SRAM computation architecture is configured to compute a prediction from an input. The SRAM computation architecture is configured to store ternary data and perform local computations on the ternary data.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventors: Chia-Yu Chen, Jui-Hsin Lai, Ko-Tao Lee, Li-Wen Hung
  • Patent number: 11599785
    Abstract: A Static Random Access Memory (SRAM) device in a binary neural network is provided. The SRAM device includes an SRAM inference engine having an SRAM computation architecture with a forward path that include multiple SRAM cells. The multiple SRAM cells are configured to form a chain of SRAM cells such that an output of a given one of the multiple SRAM cells is an input to a following one of the multiple SRAM cells. The SRAM computation architecture is configured to compute a prediction from an input.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: March 7, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Chia-Yu Chen, Jui-Hsin Lai, Ko-Tao Lee, Li-Wen Hung
  • Patent number: 11484731
    Abstract: Technical solutions are described for implementing an optogenetics treatment using a probe and probe controller are described. A probe controller controls a probe to perform the method that includes emitting, by a light source of the probe, the probe is embeddable in a tissue, a light wave to interact with a corresponding chemical in one or more cells in the tissue. The method further includes capturing, by a sensor of the probe, a spectroscopy of the light wave interacting with the corresponding chemical. The method further includes sending, by the probe, the spectroscopy to an analysis system. The method further includes receiving, by the probe, from the analysis system, adjusted parameters for the light source, and adjusting, by a controller of the probe, settings of the light source according to the received adjusted parameters to emit a different light wave to interact with the corresponding chemical.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: November 1, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Ko-Tao Lee, Ning Li, Devendra Sadana, Roy R. Yu
  • Patent number: 11362109
    Abstract: The semiconductor structure includes a semiconductor-on-insulator (SOI) substrate. A group III nitride transistor is formed in a trench in the SOI substrate. The activation of the group III nitride transistor is controlled by a silicon-based transistor. The silicon-based transistor that includes a portion of a silicon layer of the SOI substrate. A group III nitride transistor device is adjacent to the silicon-based transistor.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: June 14, 2022
    Assignee: International Business Machines Corporation
    Inventors: Ko-Tao Lee, Xin Zhang, Todd Edward Takken
  • Publication number: 20220139709
    Abstract: A method of manufacturing an electronic device is provided. The method includes forming a dielectric layer on a Si-based substrate, etching away portions of the dielectric layer to form a crisscrossing grid pattern of remaining portions of the dielectric layer and to expose the substrate in areas where the dielectric layer is removed, forming GaN-based layers on the substrate in growth areas between sidewalls of the remaining portions of the dielectric layer, and forming a semiconductor device on the GaN-based layers.
    Type: Application
    Filed: November 5, 2020
    Publication date: May 5, 2022
    Inventors: Ko-Tao Lee, Shawn Xiaofeng Du, Ning Li, Xin Zhang
  • Patent number: 11158506
    Abstract: A hard mask and a method of creating thereof are provided. A first layer is deposited that is configured to provide at least one of a chemical and a mechanical adhesion to a layer immediately below it. A second layer is deposited having an etch selectivity that is faster than the first layer. A third layer is deposited having an etch selectivity that is slower than the first and second layers. The third layer has a composite strength that is higher than the first and second layers. A photoresist layer is deposited on top of the third layer and chemically removed above an inner opening. The third layer and part of the second layer are anisotropically etched through the inner opening. The second layer and the first layer are isotropically etched to create overhang regions of the third layer.
    Type: Grant
    Filed: April 18, 2020
    Date of Patent: October 26, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Frank Robert Libsch, Ghavam G. Shahidi, Ko-Tao Lee, Stephen M. Rossnagel
  • Publication number: 20210249521
    Abstract: A lateral bipolar junction transistor including an emitter region, base region and collector region laterally orientated over a type IV semiconductor substrate, each of the emitter region, the base region and the collector region being composed of a type III-V semiconductor material. A buried oxide layer is present between the type IV semiconductor substrate and the emitter region, the base region and the collector region. The buried oxide layer having a pedestal aligned with the base region.
    Type: Application
    Filed: February 26, 2021
    Publication date: August 12, 2021
    Inventors: Kuen-Ting Shiu, Tak H. Ning, Jeng-Bang Yau, Cheng-Wei Cheng, Ko-Tao Lee
  • Patent number: 11056722
    Abstract: A solid state electrochemical battery fabrication device and a method of creating the solid state electrochemical battery are provided. There is a first chamber comprising a first magnetron and a second chamber comprising a second magnetron, coupled to the first chamber. There is a third chamber comprising a vapor source for a polymer deposition, coupled to the second chamber. A Knudsen cell is coupled to the third chamber and configured to deposit lithium on a battery being fabricated. A linear hollow shaft connects the first, second, and third chambers, and provides a hermetic seal. A first telescopic arm having a housing is coupled to a first end of the hollow shaft and configured to extend out of its housing from the first chamber to the second chamber.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: July 6, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Frank Robert Libsch, Ghavam G. Shahidi, Ko-Tao Lee, Stephen M. Rossnagel
  • Patent number: 10998420
    Abstract: A lateral bipolar junction transistor including an emitter region, base region and collector region laterally orientated over a type IV semiconductor substrate, each of the emitter region, the base region and the collector region being composed of a type III-V semiconductor material. A buried oxide layer is present between the type IV semiconductor substrate and the emitter region, the base region and the collector region. The buried oxide layer having a pedestal aligned with the base region.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 4, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kuen-Ting Shiu, Tak H. Ning, Jeng-Bang Yau, Cheng-Wei Cheng, Ko-Tao Lee
  • Patent number: 10991722
    Abstract: One silicon MOSFET transistor, which is used as the VThreshold control, and a GaN power HEMT are integrated on a single die to enable a fully integrated depletion-mode power device. GaN area is created on a silicon substrate and GaN FETs are built in the GaN area. Outside of the GaN area, silicon transistors such as switch MOSFETs are built. Front end of line or back end of line metal connections are then made to create interconnections among the GaN FET and the silicon transistor. The short physical proximity of the silicon transistor and GaN HEMT significantly reduces the parasitic resistance and inductance between them. Thus, high speed signals are able to travel from the silicon transistor to the GaN HEMT with a higher frequency and lower distortion, without creating overshoot voltage when there is large parasitic inductance. Therefore, the cascode device can operate at a higher switching frequency.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: April 27, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ko-Tao Lee, Xin Zhang, Todd E. Takken
  • Publication number: 20210111192
    Abstract: The semiconductor structure includes a semiconductor-on-insulator (SOI) substrate. A group III nitride transistor is formed in a trench in the SOI substrate. The activation of the group III nitride transistor is controlled by a silicon-based transistor. The silicon-based transistor that includes a portion of a silicon layer of the SOI substrate. A group III nitride transistor device is adjacent to the silicon-based transistor.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 15, 2021
    Inventors: Ko-Tao Lee, Xin Zhang, Todd Edward Takken
  • Patent number: 10943898
    Abstract: A method for fabricating a semiconductor device includes, for a substrate having a first region protected by a cap layer, forming a first device on a second region of the substrate. The substrate includes an insulator layer disposed between a first semiconductor layer and a second semiconductor layer each including a first semiconductor material. The method further includes forming a second device on the first region, including forming one or more transistors each having a channel formed from a second semiconductor material different from the first semiconductor material.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: March 9, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xin Zhang, Ko-Tao Lee, Todd E. Takken, Paul W. Coteus, Andrew Ferencz
  • Patent number: 10940554
    Abstract: Methods of fabricating a probe are described. In an example, a structure may be formed on a surface of a substrate. The structure may include the probe, a hinge, and an anchor arranged linearly, where an angle is formed between the probe and the hinge. The hinge may be positioned between the probe and the anchor, and the structure may be parallel to the substrate. An amount of solder may be deposited on an area of the structure that spans from a portion of the probe to a portion of the anchor, and across the hinge. The deposited solder may be reshaped by an execution of a solder reflow process. The reshape of the deposited solder may cause the probe to rotate about the hinge in order to reduce the angle between the probe and the hinge.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: March 9, 2021
    Assignee: International Business Machines Corporation
    Inventors: Li-Wen Hung, Jui-Hsin Lai, Chia-Yu Chen, Ko-Tao Lee
  • Patent number: 10930565
    Abstract: A method of fabricating an n-type field effect transistor device (nFET) in a region of a wafer element is provided. The method includes forming a mandrel in the region and growing III-V semiconductor materials on the mandrel. The method also includes pulling the mandrel from a gate space in which a capped gate structure is formable and from source and drain (S/D) contact spaces and growing III-V semiconductor materials in the S/D contact spaces.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: HsinYu Tsai, Renee T. Mo, Cheng-Wei Cheng, Ko-Tao Lee
  • Patent number: 10886328
    Abstract: An approach to forming a full color micro-display that includes using a plurality of micro-light emitting diodes formed in a silicon on insulator substrate, where the plurality of micro-light emitting diodes include a plurality of red micro-light emitting diodes, a plurality of green micro-light emitting diodes, and a plurality of blue micro-light emitting diodes. Additionally, the approach includes forming a plurality of transistor devices in the silicon on insulator substrate, wherein each transistor device of the plurality of transistor devices acts as a switch connecting to a micro-light emitting diode of the plurality of micro-light emitting diodes.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: January 5, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ning Li, Ko-Tao Lee, Shawn Xiaofeng Du
  • Patent number: 10886415
    Abstract: A method of forming a multi-state nanosheet transistor device is provided. The method includes forming an alternating sequence of sacrificial layer segments and differentially doped nanosheet layer segments on a substrate, wherein each of the differentially doped nanosheet layer segments has a different dopant concentration from the other differentially doped nanosheet layer segments. The method further includes forming a source/drain on each of opposite ends of the sacrificial layer segments and differentially doped nanosheet layer segments, and removing the sacrificial layer segments. The method further includes depositing a gate dielectric layer on the differentially doped nanosheet layer segments, and forming a gate electrode on the gate dielectric layer to form a common gate-all-around structure, where each of the differentially doped nanosheet layer segments conducts current at a different threshold voltage.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: January 5, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ko-Tao Lee, Pierce I-Jen Chuang, Cheng-Wei Cheng, Seyoung Kim
  • Patent number: 10874876
    Abstract: Probes include a probe body configured to penetrate biological tissue. High-efficiency light sources are positioned within the probe body. Each high-efficiency light source has a sufficiently intense light output to trigger a light-sensitive reaction in neighboring tissues and has a sufficiently low power output such that a combined heat output of multiple light sources does cause a disruptive temperature increase in the neighboring tissues.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: December 29, 2020
    Assignee: International Business Machines Corporation
    Inventors: Hariklia Deligianni, Ko-Tao Lee, Ning Li, Devendra K. Sadana
  • Publication number: 20200357995
    Abstract: A method of forming a resistive processing unit is provided. The method includes forming a spacer on a substrate. The method further includes forming an intercalation layer segment on opposite sides of the spacer, and replacing a portion of each of the intercalation layer segments with an insulating region. The method further includes replacing the spacer with an electrolyte layer.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 12, 2020
    Inventors: Matthew W. Copel, Takashi Ando, Ko-Tao Lee, John Rozen