Patents by Inventor Hidehiko Shiraiwa

Hidehiko Shiraiwa 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: 11183509
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 23, 2021
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ching-Huang Lu, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Publication number: 20200411537
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 31, 2020
    Applicant: Infineon Technologies LLC
    Inventors: Ching-Huang LU, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 10692877
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: June 23, 2020
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ching-Huang Lu, Simon S. Chan, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 10622370
    Abstract: A method for fabricating a memory device with a self-aligned trap layer and rounded active region corners is disclosed. In the present invention, an STI process is performed before any of the charge-trapping and top-level layers are formed. Immediately after the STI process, the sharp corners of the active regions are exposed. Because these sharp corners are exposed at this time, they are available to be rounded through any number of known rounding techniques. Rounding the corners improves the performance characteristics of the memory device. Subsequent to the rounding process, the charge-trapping structure and other layers can be formed by a self-aligned process.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 14, 2020
    Assignee: Monterey Research, LLC
    Inventors: Tim Thurgate, Shenqing Fang, Kuo-Tung Chang, Youseok Suh, Meng Ding, Hidehiko Shiraiwa, Amol Ramesh Joshi, Hapreet Sachar, David Matsumoto, Lovejeet Singh, Chih-Yuh Yang
  • Publication number: 20170250192
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Application
    Filed: April 17, 2017
    Publication date: August 31, 2017
    Applicant: Cypress Semiconductor Corporation
    Inventors: Ching-Huang LU, Simon S. Chan, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 9666591
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: May 30, 2017
    Assignee: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: Ching-Huang Lu, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 9431503
    Abstract: An integrated circuit comprises a first poly-silicon region including a first poly-silicon layer, a second poly-silicon layer disposed over the first poly-silicon layer, a first poly-silicon finger associated with the first poly-silicon layer, and a second poly-silicon finger associated with the second poly-silicon layer. The first poly-silicon finger and the second poly-silicon finger are oriented in a substantially orthogonal manner relative to each other. The integrated circuit comprises a second poly-silicon gate region including the first poly-silicon layer. The first polysilicon gate region and the second polysilicon gate region each have different poly-silicon gate structures.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: August 30, 2016
    Assignee: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: Chuan Lin, Hidehiko Shiraiwa, Bradley Marc Davis, Lei Xue, Simon S. Chan, Kenichi Ohtsuka, Angela T. Hui, Scott Allan Bell
  • Publication number: 20160211271
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Application
    Filed: January 26, 2016
    Publication date: July 21, 2016
    Inventors: Ching-Huang LU, Simon Siu-Sing CHAN, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 9276007
    Abstract: A method for fabricating a memory device with a self-aligned trap layer and rounded active region corners is disclosed. In the present invention, an STI process is performed before any of the charge-trapping and top-level layers are formed. Immediately after the STI process, the sharp corners of the active regions are exposed. Because these sharp corners are exposed at this time, they are available to be rounded through any number of known rounding techniques. Rounding the corners improves the performance characteristics of the memory device. Subsequent to the rounding process, the charge-trapping structure and other layers can be formed by a self-aligned process.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: March 1, 2016
    Assignee: Cypress Semiconductor Corporation
    Inventors: Tim Thurgate, Shenqing Fang, Kuo-Tung Chang, YouSeok Suh, Meng Ding, Hidehiko Shiraiwa, Amol Joshi, Hapreet Sachar, David Matsumoto, Lovejeet Singh, Chih-Yuh Yang
  • Patent number: 9252154
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 2, 2016
    Assignee: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: Ching-Huang Lu, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 9196624
    Abstract: Methods and systems of fabricating a wordline protection structure are described. As described, the wordline protection structure includes a polysilicon structure formed adjacent to a memory core region. The polysilicon structure includes first doped region positioned on a core side of the polysilicon structure and a second doped region positioned on a spine side of the polysilicon structure. An un-doped region positioned between the first and second doped regions. A conductive layer is formed on top of the polysilicon structure and arranged so that it does not contact the un-doped region at either the transition between the first doped region and the un-doped region or the second doped region and un-doped region.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: November 24, 2015
    Assignee: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: Bradley Marc Davis, Mark W. Randolph, Sung-Yong Chung, Hidehiko Shiraiwa
  • Patent number: 9111985
    Abstract: A shallow bipolar junction transistor comprising a high voltage n+ well implanted into a semiconductor substrate. The shallow bipolar junction transistor further comprises a bit line n+ implant (BNI) above the high voltage n+ well and an oxide nitride (ONO) layer above the high voltage n+ well. A portion of the ONO layer isolates the BNI from a shallow trench isolation (STI) region.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: August 18, 2015
    Assignee: Cypress Semiconductor Corporation
    Inventors: Alok Nandini Roy, Gulzar Kathawala, Zubin Patel, Hidehiko Shiraiwa
  • Publication number: 20150017795
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Ching-Huang Lu, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Publication number: 20140312409
    Abstract: A method for fabricating a memory device with a self-aligned trap layer and rounded active region corners is disclosed. In the present invention, an STI process is performed before any of the charge-trapping and top-level layers are formed. Immediately after the STI process, the sharp corners of the active regions are exposed. Because these sharp corners are exposed at this time, they are available to be rounded through any number of known rounding techniques. Rounding the corners improves the performance characteristics of the memory device. Subsequent to the rounding process, the charge-trapping structure and other layers can be formed by a self-aligned process.
    Type: Application
    Filed: January 29, 2014
    Publication date: October 23, 2014
    Applicant: SPANSION LLC
    Inventors: Tim Thurgate, Shenqing Fang, Kuo-Tung Chang, YouSeok Suh, Meng Ding, Hidehiko Shiraiwa, Amol Joshi, Hapreet Sachar, David Matsumoto, Lovejeet Singh, Chih-Yuh Yang
  • Patent number: 8866213
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: October 21, 2014
    Assignee: Spansion LLC
    Inventors: Ching-Huang Lu, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Patent number: 8809936
    Abstract: A memory cell system is provided including forming a first insulator layer over a semiconductor substrate, forming a charge trap layer over the first insulator layer, forming a second insulator layer over the charge trap layer, forming a top blocking intermediate layer over the second insulator layer, and forming a contact layer over the top blocking intermediate layer.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: August 19, 2014
    Assignees: Globalfoundries Inc., Spansion LLC
    Inventors: Lei Xue, Rinji Sugino, YouSeok Suh, Hidehiko Shiraiwa, Meng Ding, Shenqing Fang, Joong Jeon
  • Publication number: 20140209993
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A farther benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: Spansion LLC
    Inventors: Ching-Huang LU, Simon Siu-Sing CHAN, Hidehiko SHIRAIWA, Lei XUE
  • Publication number: 20140117435
    Abstract: A method of fabricating an integrated circuit including a first region and a second region each having different poly-silicon gate structures is provided. The method includes depositing a first poly-silicon layer over the first and the second region and depositing, within the second region, an oxide layer over the first poly-silicon layer. A second poly-silicon layer is deposited over the first poly-silicon layer and the oxide region. A portion of the second poly-silicon layer that lies over the oxide region is then stripped away.
    Type: Application
    Filed: January 7, 2014
    Publication date: May 1, 2014
    Applicant: Spansion LLC
    Inventors: Chuan LIN, Hidehiko Shiraiwa, Bradley Marc Davis, Lei Xue, Simon S. Chan, Kenichi Ohtsuka, Angela T. Hui, Scott Allan Bell
  • Patent number: 8673716
    Abstract: A method of manufacturing an integrated circuit is provided with a semiconductor substrate having a core region and a periphery region. A charge-trapping dielectric layer is deposited in the core region, and a gate dielectric layer is deposited in the periphery region. Bitlines are formed in the semiconductor substrate in the core region and not in the periphery region. A wordline-gate layer is formed and implanted with dopant in the core region and not in the periphery region. A wordline and gate are formed. Source/drain junctions are implanted with dopant in the semiconductor substrate around the gate, and the gate is implanted with a gate doping implantation in the periphery region and not in the core region.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: March 18, 2014
    Assignee: Spansion LLC
    Inventors: Mark T. Ramsbey, Tazrien Kamal, Jean Y. Yang, Emmanuil Lingunis, Hidehiko Shiraiwa, Yu Sun
  • Patent number: 8652907
    Abstract: A method of fabricating an integrated circuit including a first region and a second region each having different poly-silicon gate structures is provided. The method includes depositing a first poly-silicon layer over the first and the second region and depositing, within the second region, an oxide layer over the first poly-silicon layer. A second poly-silicon layer is deposited over the first poly-silicon layer and the oxide region. A portion of the second poly-silicon layer that lies over the oxide region is then stripped away.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: February 18, 2014
    Assignee: Spansion LLC
    Inventors: Chuan Lin, Hidehiko Shiraiwa, Bradley Marc Davis, Lei Xue, Simon S. Chan, Kenichi Ohtsuka, Angela T. Hui, Scott Allan Bell