Patents by Inventor Ali Keshavarzi

Ali Keshavarzi 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: 20230197723
    Abstract: An integrated circuit includes a first diffusion area for a first type transistor. The first type transistor includes a first drain region and a first source region. A second diffusion area for a second type transistor is separated from the first diffusion area. The second type transistor includes a second drain region and a second source region. A gate electrode continuously extends across the first diffusion area and the second diffusion area in a routing direction. A first metallic structure is electrically coupled with the first source region. A second metallic structure is electrically coupled with the second drain region. A third metallic structure is disposed over and electrically coupled with the first and second metallic structures. A width of the first metallic structure is substantially equal to or larger than a width of the third metallic structure.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 22, 2023
    Inventors: Ali KESHAVARZI, Ta-Pen GUO, Shu-Hui SUNG, Hsiang-Jen TSENG, Shyue-Shyh LIN, Lee-Chung LU, Chung-Cheng WU, Li-Chun TIEN, Jung-Chan YANG, Ting Yu CHEN, Min CAO, Yung-Chin HOU
  • Patent number: 11581314
    Abstract: An integrated circuit includes a first diffusion area for a first type transistor. The first type transistor includes a first drain region and a first source region. A second diffusion area for a second type transistor is separated from the first diffusion area. The second type transistor includes a second drain region and a second source region. A gate electrode continuously extends across the first diffusion area and the second diffusion area in a routing direction. A first metallic structure is electrically coupled with the first source region. A second metallic structure is electrically coupled with the second drain region. A third metallic structure is disposed over and electrically coupled with the first and second metallic structures. A width of the first metallic structure is substantially equal to or larger than a width of the third metallic structure.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: February 14, 2023
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ali Keshavarzi, Ta-Pen Guo, Shu-Hui Sung, Hsiang-Jen Tseng, Shyue-Shyh Lin, Lee-Chung Lu, Chung-Cheng Wu, Li-Chun Tien, Jung-Chan Yang, Ting Yu Chen, Min Cao, Yung-Chin Hou
  • Publication number: 20210074821
    Abstract: A method to integrate silicon-oxide-nitride-oxide-silicon (SONOS) transistors into a complementary metal-oxide-semiconductor (CMOS) flow including a triple gate oxide structure. The memory device may include a non-volatile memory (NVM) transistor that has a charge-trapping layer and a blocking dielectric, a first field-effect transistor (FET) including a first gate oxide of a first thickness, a second FET including a second gate oxide of a second thickness, a third FET including a third gate oxide of a third thickness, in which the first thickness is greater than the second thickness and the second thickness is greater than the third thickness.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 11, 2021
    Inventors: Krishnaswamy Ramkumar, Igor Kouznetsov, Venkatraman Prabhakar, Ali Keshavarzi
  • Patent number: 10784356
    Abstract: A method to integrate silicon-oxide-nitride-oxide-silicon (SONOS) transistors into a complementary metal-oxide-semiconductor (CMOS) flow including a triple gate oxide structure. The memory device may include a non-volatile memory (NVM) transistor that has a charge-trapping layer and a blocking dielectric, a first field-effect transistor (FET) including a first gate oxide of a first thickness, a second FET including a second gate oxide of a second thickness, a third FET including a third gate oxide of a third thickness, in which the first thickness is greater than the second thickness and the second thickness is greater than the third thickness.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: September 22, 2020
    Assignee: LONGITUDE FLASH MEMORY SOLUTIONS LTD.
    Inventors: Krishnaswamy Ramkumar, Igor Kouznetsov, Venkatraman Prabhakar, Ali Keshavarzi
  • Publication number: 20200126986
    Abstract: An integrated circuit includes a first diffusion area for a first type transistor. The first type transistor includes a first drain region and a first source region. A second diffusion area for a second type transistor is separated from the first diffusion area. The second type transistor includes a second drain region and a second source region. A gate electrode continuously extends across the first diffusion area and the second diffusion area in a routing direction. A first metallic structure is electrically coupled with the first source region. A second metallic structure is electrically coupled with the second drain region. A third metallic structure is disposed over and electrically coupled with the first and second metallic structures. A width of the first metallic structure is substantially equal to or larger than a width of the third metallic structure.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Inventors: Ali KESHAVARZI, Ta-Pen GUO, Shu-Hui SUNG, Hsiang-Jen TSENG, Shyue-Shyh LIN, Lee-Chung LU, Chung-Cheng WU, Li-Chun TIEN, Jung-Chan YANG, Ting-Yu CHEN, Min CAO, Yung-Chin HOU
  • Publication number: 20200051642
    Abstract: A memory device that includes a non-volatile memory (NVM) array, divided into a flash memory portion and an electrically erasable programmable read-only memory (EEPROM) portion. The NVM array includes charge-trapping memory cells arranged in rows and columns, in which each memory cell has a memory transistor including an angled lightly doped drain (LDD) implant, and a select transistor including a shared source region with a halo implant. The flash memory portion and the EEPROM portion are disposed within one single semiconductor die. Other embodiments are also disclosed.
    Type: Application
    Filed: June 24, 2019
    Publication date: February 13, 2020
    Inventors: Gary Menezes, Krishnaswamy Ramkumar, Ali Keshavarzi, Venkatraman Prabhakar
  • Patent number: 10535655
    Abstract: An integrated circuit includes a first diffusion area for a first type transistor. The first type transistor includes a first drain region and a first source region. A second diffusion area for a second type transistor is separated from the first diffusion area. The second type transistor includes a second drain region and a second source region. A gate electrode continuously extends across the first diffusion area and the second diffusion area in a routing direction. A first metallic structure is electrically coupled with the first source region. A second metallic structure is electrically coupled with the second drain region. A third metallic structure is disposed over and electrically coupled with the first and second metallic structures. A width of the first metallic structure is substantially equal to or larger than a width of the third metallic structure.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: January 14, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ali Keshavarzi, Ta-Pen Guo, Shu-Hui Sung, Hsiang-Jen Tseng, Shyue-Shyh Lin, Lee-Chung Lu, Chung-Cheng Wu, Li-Chun Tien, Jung-Chan Yang, Ting-Yu Chen, Min Cao, Yung-Chin Hou
  • Patent number: 10332599
    Abstract: A memory device that includes a non-volatile memory (NVM) array, divided into a flash memory portion and an electrically erasable programmable read-only memory (EEPROM) portion. The NVM array includes charge-trapping memory cells arranged in rows and columns, in which each memory cell has a memory transistor including an angled lightly doped drain (LDD) implant, and a select transistor including a shared source region with a halo implant. The flash memory portion and the EEPROM portion are disposed within one single semiconductor die. Other embodiments are also disclosed.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: June 25, 2019
    Assignee: LONGITUDE FLASH MEMORY SOLUTIONS LTD.
    Inventors: Gary Menezes, Krishnaswamy Ramkumar, Ali Keshavarzi, Venkatraman Prabhakar
  • Publication number: 20190147960
    Abstract: A memory device that includes a non-volatile memory (NVM) array, divided into a flash memory portion and an electrically erasable programmable read-only memory (EEPROM) portion. The NVM array includes charge-trapping memory cells arranged in rows and columns, in which each memory cell has a memory transistor including an angled lightly doped drain (LDD) implant, and a select transistor including a shared source region with a halo implant. The flash memory portion and the EEPROM portion are disposed within one single semiconductor die. Other embodiments are also disclosed.
    Type: Application
    Filed: March 12, 2018
    Publication date: May 16, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Gary Menezes, Krishnaswamy Ramkumar, Ali Keshavarzi, Venkatraman Prabhakar
  • Publication number: 20190088487
    Abstract: A method to integrate silicon-oxide-nitride-oxide-silicon (SONOS) transistors into a complementary metal-oxide-semiconductor (CMOS) flow including a triple gate oxide structure. The memory device may include a non-volatile memory (NVM) transistor that has a charge-trapping layer and a blocking dielectric, a first field-effect transistor (FET) including a first gate oxide of a first thickness, a second FET including a second gate oxide of a second thickness, a third FET including a third gate oxide of a third thickness, in which the first thickness is greater than the second thickness and the second thickness is greater than the third thickness.
    Type: Application
    Filed: August 8, 2018
    Publication date: March 21, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Krishnaswamy Ramkumar, Igor Kouznetsov, Venkatraman Prabhakar, Ali Keshavarzi
  • Patent number: 10062573
    Abstract: A method to integrate silicon-oxide-nitride-oxide-silicon (SONOS) transistors into a complementary metal-oxide-semiconductor (CMOS) flow including a triple gate oxide structure. The memory device may include a non-volatile memory (NVM) transistor that has a charge-trapping layer and a blocking dielectric, a first field-effect transistor (FET) including a first gate oxide of a first thickness, a second FET including a second gate oxide of a second thickness, a third FET including a third gate oxide of a third thickness, in which the first thickness is greater than the second thickness and the second thickness is greater than the third thickness.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: August 28, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Krishnaswamy Ramkumar, Igor Kouznetsov, Venkatraman Prabhakar, Ali Keshavarzi
  • Patent number: 9624094
    Abstract: A microelectronic system including hydrogen barriers and copper pillars for wafer level packaging and method of fabricating the same are provided. Generally, the method includes: forming an insulating hydrogen barrier over a surface of a first chip; exposing at least a portion of an electrical contact electrically coupled to a component in the first chip by removing a portion of the insulating hydrogen barrier, the component including a material susceptible to degradation by hydrogen; forming a conducting hydrogen barrier over at least the exposed portion of the electrical contact; and forming a copper pillar over the conducting hydrogen barrier. In one embodiment, the material susceptible to degradation is lead zirconate titanate (PZT) and the microelectronic systems device is a ferroelectric random access memory including a ferroelectric capacitor with a PZT ferroelectric layer. Other embodiments are also disclosed.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: April 18, 2017
    Assignee: Cypress Semiconductor Corporation
    Inventors: Shan Sun, Ali Keshavarzi, Thomas Davenport, Thurman John Rodgers
  • Publication number: 20160372469
    Abstract: An integrated circuit includes a first diffusion area for a first type transistor. The first type transistor includes a first drain region and a first source region. A second diffusion area for a second type transistor is separated from the first diffusion area. The second type transistor includes a second drain region and a second source region. A gate electrode continuously extends across the first diffusion area and the second diffusion area in a routing direction. A first metallic structure is electrically coupled with the first source region. A second metallic structure is electrically coupled with the second drain region. A third metallic structure is disposed over and electrically coupled with the first and second metallic structures. A width of the first metallic structure is substantially equal to or larger than a width of the third metallic structure.
    Type: Application
    Filed: April 8, 2016
    Publication date: December 22, 2016
    Inventors: Ali Keshavarzi, Ta-Pen Guo, Shu-Hui Sung, Hsiang-Jen Tseng, Shyue-Shyh Lin, Lee-Chung Lu, Chung-Cheng Wu, Li-Chun Tien, Jung-Chan Yang, Ting-Yu Chen, Min Cao, Yung-Chin Hou
  • Patent number: 9385213
    Abstract: A method of forming an integrated circuit including forming a first diffusion area and a second diffusion area on a substrate, wherein the first diffusion area is configured for a first type transistor, the second diffusion area is configured for a second type transistor. The method further includes forming first source and drain regions in the first diffusion area. The method further includes forming second source and drain regions in the second diffusion area. The method further includes forming a gate electrode extending across the first diffusion area and the second diffusion area. The method further includes forming a first metallic layer, a second metallic layer, and a third metallic layer. The first metallic layer is electrically coupled with the first source region. The second metallic layer is electrically coupled with the first and second drain regions. The third metallic layer is electrically coupled with the second source region.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: July 5, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chung-Cheng Wu, Ali Keshavarzi, Ka Hing Fung, Ta-Pen Guo, Jiann-Tyng Tzeng, Yen-Ming Chen, Shyue-Shyh Lin, Shyh-Wei Wang, Sheng-Jier Yang, Hsiang-Jen Tseng, David B. Scott, Min Cao
  • Patent number: 9312260
    Abstract: An integrated circuit includes a first diffusion area for a first type transistor. The first type transistor includes a first drain region and a first source region. A second diffusion area for a second type transistor is separated from the first diffusion area. The second type transistor includes a second drain region and a second source region. A gate electrode continuously extends across the first diffusion area and the second diffusion area in a routing direction. A first metallic structure is electrically coupled with the first source region. A second metallic structure is electrically coupled with the second drain region. A third metallic structure is disposed over and electrically coupled with the first and second metallic structures. A width of the first metallic structure is substantially equal to or larger than a width of the third metallic structure.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: April 12, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ali Keshavarzi, Ta-Pen Guo, Helen Shu-Hui Chang, Hsiang-Jen Tseng, Shyue-Shyh Lin, Lee-Chung Lu, Chung-Cheng Wu, Li-Chun Tien, Jung-Chan Yang, Shu-Min Chen, Min Cao, Yung-Chin Hou
  • Patent number: 8962421
    Abstract: A method for fabricating a FinFET integrated circuit includes depositing a first polysilicon layer at a first end of a diffusion region and a second polysilicon layer at a second end of the diffusion region; diffusing an n-type material into the diffusion region to form a diffused resistor; and epitaxially growing a silicon material between the first and second polysilicon layers to form fins structures over the diffused resistor and spanning between the first and second polysilicon layers.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: February 24, 2015
    Assignee: GLOBALFOUNDRIES, Inc.
    Inventors: Gopal Srinivasan, Andy Wei, Dinesh Somasekhar, Ali Keshavarzi, Subi Kengeri
  • Publication number: 20140134822
    Abstract: A method for fabricating a FinFET integrated circuit includes depositing a first polysilicon layer at a first end of a diffusion region and a second polysilicon layer at a second end of the diffusion region; diffusing an n-type material into the diffusion region to form a diffused resistor; and epitaxially growing a silicon material between the first and second polysilicon layers to form fins structures over the diffused resistor and spanning between the first and second polysilicon layers.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: GLOBALFOUNDRIES, INC.
    Inventors: Gopal Srinivasan, Andy Wei, Dinesh Somasekhar, Ali Keshavarzi, Subi Kengeri
  • Patent number: 8689154
    Abstract: An approach for providing timing-closed FinFET designs from planar designs is disclosed. Embodiments include: receiving one or more planar cells associated with a planar design; generating an initial FinFET design corresponding to the planar design based on the planar cells and a FinFET model; and processing the initial FinFET design to provide a timing-closed FinFET design. Other embodiments include: determining a race condition associated with a path of the initial FinFET design based on a timing analysis of the initial FinFET design; and increasing delay associated with the path to resolve hold violations associated with the race condition, wherein the processing of the initial FinFET design is based on the delay increase.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: April 1, 2014
    Assignee: GlobalFoundries Inc.
    Inventors: Mahbub Rashed, David Doman, Dinesh Somasekhar, Yan Wang, Yunfei Deng, Navneet Jain, Jongwook Kye, Ali Keshavarzi, Subramani Kengeri, Suresh Venkatesan
  • Publication number: 20130275935
    Abstract: An approach for providing timing-closed FinFET designs from planar designs is disclosed. Embodiments include: receiving one or more planar cells associated with a planar design; generating an initial FinFET design corresponding to the planar design based on the planar cells and a FinFET model; and processing the initial FinFET design to provide a timing-closed FinFET design. Other embodiments include: determining a race condition associated with a path of the initial FinFET design based on a timing analysis of the initial FinFET design; and increasing delay associated with the path to resolve hold violations associated with the race condition, wherein the processing of the initial FinFET design is based on the delay increase.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 17, 2013
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Mahbub Rashed, David Doman, Dinesh Somasekhar, Yan Wang, Yunfei Deng, Navneet Jain, Jongwook Kye, Ali Keshavarzi, Subramani Kengeri, Suresh Venkatesan
  • Patent number: 8513741
    Abstract: In accordance with some embodiments, logical circuits comprising carbon nanotube field effect transistors are disclosed herein.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: August 20, 2013
    Assignee: Intel Corporation
    Inventors: Ali Keshavarzi, Juanita Kurtin, Vivek De