Patents by Inventor Kamal M. Karda

Kamal M. Karda 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: 20210066298
    Abstract: Some embodiments include apparatuses and methods using a substrate, a pillar having a length perpendicular to the substrate, a first conductive plate, a second conductive plate, a memory cell located between the first and second conductive plates and electrically separated from the first and second conductive plates, and a conductive connection. The first conductive plate is located in a first level of the apparatus and being separated from the pillar by a first dielectric located in the first level. The second conductive plate is located in a second level of the apparatus and being separated from the pillar by a second dielectric located in the second level. The memory cell includes a first semiconductor material located in a third level of the apparatus between the first and second levels and contacting the pillar and the conductive connection, and a second semiconductor material located in a fourth level of the apparatus between the first and second levels and contacting the pillar.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Kamal M. Karda, Kartthik Sarpatwari, Haitao Liu, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20210066328
    Abstract: Some embodiments include an assembly having a memory cell with an active region which includes a body region between a pair of source/drain regions. A charge-storage material is adjacent to the body region. A conductive gate is adjacent to the charge-storage material. A hole-recharge arrangement is configured to replenish holes within the body region during injection of holes from the body region to the charge-storage material. The hole-recharge arrangement includes a heterostructure active region having at least one source/drain region of a different composition than the body region, and/or includes an extension coupling the body region with a hole-reservoir. A wordline is coupled with the conductive gate. A first comparative digit line is coupled with one of the source/drain regions, and a second comparative digit line is coupled with the other of the source/drain regions.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 4, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Kamal M. Karda, Albert Fayrushin, Haitao Liu, Kirk D. Prall
  • Publication number: 20210066135
    Abstract: An array of vertical transistors comprises spaced pillars individually comprising a channel region of individual vertical transistors. A horizontally-elongated conductor line directly electrically couples together individual of the channel regions of the pillars of a plurality of the vertical transistors. An upper source/drain region is above the individual channel regions of the pillars, a lower source/drain region is below the individual channel regions of the pillars, and a conductive gate line is operatively aside the individual channel regions of the pillars and that interconnects multiple of the vertical transistors. Methods are disclosed.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 4, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Deepak Chandra Pandey, Haitao Liu, Kamal M. Karda
  • Publication number: 20210066302
    Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes a conductive region, a first data line, a second data line, a first memory cell coupled to the first data line and the conductive region, a second memory cell coupled to the second data line and the conductive region, a conductive structure, and a conductive line. The first memory cell includes a first transistor coupled to a second transistor, the first transistor including a first charge storage structure. The second memory cell includes a third transistor coupled to a fourth transistor, the third transistor including a second charge storage structure. The conductive structure is located between and electrically separated from the first and second charge storage structures. The conductive line forms a gate of each of the first, second, third, and fourth transistors.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Kamal M. Karda, Haitao Liu, Karthik Sarpatwari, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20210066502
    Abstract: Some embodiments include a ferroelectric transistor having a first electrode and a second electrode. The second electrode is offset from the first electrode by an active region. A transistor gate is along a portion of the active region. The active region includes a first source/drain region adjacent the first electrode, a second source/drain region adjacent the second electrode, and a body region between the first and second source/drain regions. The body region includes a gated channel region adjacent the transistor gate. The active region includes at least one barrier between the second electrode and the gated channel region which is permeable to electrons but not to holes. Ferroelectric material is between the transistor gate and the gated channel region.
    Type: Application
    Filed: August 3, 2020
    Publication date: March 4, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Kamal M. Karda, Haitao Liu, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20210066196
    Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes a data line, a memory cell coupled to the data line, a ground connection, and a conductive line. The memory cell includes a first transistor and a second transistor. The first transistor includes a first region electrically coupled to the data line, and a charge storage structure electrically separated from the first region. The second transistor includes a second region electrically coupled to the charge storage structure and the data line. The ground connection is coupled to the first region of the first transistor. The conductive line is electrically separated from the first and second regions and spans across part of the first region of the first transistor and part of the second region of the second transistor and forming a gate of the first and second transistors.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Kamal M. Karda, Karthik Sarpatwari, Haitao Liu, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20210066301
    Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes a substrate, a conductive plate located over the substrate to couple a ground connection, a data line located between the substrate and the conductive plate, a memory cell, and a conductive line. The memory cell includes a first transistor and a second transistor. The first transistor includes a first region electrically coupled between the data line and the conductive plate, and a charge storage structure electrically separated from the first region. The second transistor includes a second region electrically coupled to the charge storage structure and the data line. The conductive line is electrically separated from the first and second regions and spans across part of the first region of the first transistor and part of the second region of the second transistor and forming a gate of the first and second transistors.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Kamal M. Karda, Karthik Sarpatwari, Haitao Liu, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20210066300
    Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes a first data line located in a first level of the apparatus; a second data line located in a second level of the apparatus; a first memory cell located in a third level of the apparatus between the first and second levels, the first memory cell including a first transistor coupled to the first data line, and a second transistor coupled between the first data line and a charge storage structure of the first transistor; and a second memory cell located in a fourth level of the apparatus between the first and second levels, the second memory cell including a third transistor coupled to the second data line, and a fourth transistor coupled between the second data line and a charge storage structure of the third transistor, the first transistor coupled in series with the third transistor between the first and second data lines.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Karthik Sarpatwari, Kamal M. Karda, Durai Vishak Nirmal Ramaswamy, Haitao Liu
  • Patent number: 10937482
    Abstract: A memory cell comprises channel material, insulative charge-passage material, programmable material, a control gate, and charge-blocking material between the programmable material and the control gate. The charge-blocking material comprises a non-ferroelectric insulator material and a ferroelectric insulator material comprising hafnium, zirconium, and oxygen. Other embodiments are disclosed.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: March 2, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Ankit Sharma, Haitao Liu, Albert Fayrushin, Akira Goda, Kamal M. Karda
  • Patent number: 10937904
    Abstract: A programmable charge-storage transistor comprises channel material, insulative charge-passage material, charge-storage material, a control gate, and charge-blocking material between the charge-storage material and the control gate. The charge-blocking material comprises a non-ferroelectric insulator material and a ferroelectric insulator material. Arrays of elevationally-extending strings of memory cells of memory cells are disclosed, including methods of forming such. Other embodiments, including method, are disclosed.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 2, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Haitao Liu, Kamal M. Karda, Albert Fayrushin
  • Publication number: 20210057424
    Abstract: A transistor comprises a 2D material structure and a gate structure. The 2D material structure conformally extends on and between surfaces of dielectric fin structures extending in parallel in a first horizontal direction, and comprises a source region, a drain region, and a channel region positioned between the source region and the drain region in the first horizontal direction. The gate structure overlies the channel region of the 2D material structure and extends in a second horizontal direction orthogonal to the first horizontal direction. The gate structure is within horizontal boundaries of the channel region of the 2D material structure in the first horizontal direction. Microelectronic devices, memory devices, and electronic systems are also described.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 25, 2021
    Inventors: Kamal M. Karda, Akira Goda, Sanh D. Tang, Gurtej S. Sandhu, Litao Yang, Haitao Liu
  • Publication number: 20210050443
    Abstract: Some embodiments include an integrated assembly having a semiconductor material with a more-doped region adjacent to a less-doped region. A two-dimensional material is between the more-doped region and a portion of the less-doped region. Some embodiments include an integrated assembly which contains a semiconductor material, a metal-containing material over the semiconductor material, and a two-dimensional material between a portion of the semiconductor material and the metal-containing material. Some embodiments include a transistor having a first source/drain region, a second source/drain region, a channel region between the first and second source/drain regions, and a two-dimensional material between the channel region and the first source; drain region.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 18, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Kamal M. Karda, Chandra Mouli, Haitao Liu
  • Publication number: 20210043731
    Abstract: A transistor comprises a top source/drain region, a bottom source/drain region, a channel region vertically between the top and bottom source/drain regions, and a gate operatively laterally-adjacent the channel region. The channel region is crystalline and comprises a plurality of vertically-elongated crystal grains that individually are directly against both of the top source/drain region and the bottom source/drain region. Other embodiments, including methods, are disclosed.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Manuj Nahar, Vassil N. Antonov, Kamal M. Karda, Michael Mutch, Hung-Wei Liu, Jeffery B. Hull
  • Publication number: 20210035979
    Abstract: An example apparatus includes a first source/drain region and a second source/drain region formed in a substrate. The first source/drain region and the second source/drain region are separated by a channel. The apparatus includes a gate opposing the channel. The gate includes noble metal nanoparticles. A sense line is coupled to the first source/drain region and a storage node is coupled to the second source/drain region.
    Type: Application
    Filed: October 8, 2020
    Publication date: February 4, 2021
    Inventors: Fatma Arzum Simsek-Ege, Kamal M. Karda, Haitao Liu
  • Patent number: 10903223
    Abstract: A memory can have a stacked memory array that can have a plurality of levels of memory cells. Each respective level of memory cells can be commonly coupled to a respective access line. A plurality of drivers can be above the stacked memory array. Each respective driver can have a monocrystalline semiconductor with a conductive region coupled to a respective access line.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: January 26, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Haitao Liu, Kamal M. Karda, Gurtej S. Sandhu, Sanh D. Tang, Akira Goda, Lifang Xu
  • Publication number: 20210013305
    Abstract: An example apparatus includes a first source/drain region and a second source/drain region formed in a substrate to form an active area of the apparatus. The first source/drain region and the second source/drain region are separated by a channel. The apparatus includes a gate opposing the channel. A sense line is coupled to the first source/drain region and a storage node is coupled to the second source/drain region. An isolation trench is adjacent to the active area. The trench includes a dielectric material with a conductive bias opposing the conductive bias of the channel in the active area.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 14, 2021
    Inventors: Kamal M. Karda, Haitao Liu, Si-Woo Lee, Fatma Arzum Simsek-Ege, Deepak Chandra Pandey, Chandra V. Mouli, John A. Smythe, III
  • Publication number: 20200388712
    Abstract: Systems, apparatuses and methods related to access devices formed with conductive contacts are described. An example apparatus may include an access device that includes a field-effect transistor (FET). A vertical pillar may be formed to include a channel of the FET, with a portion of the vertical pillar formed between at least two gates of the FET (i.e., a multi-gate Fin-FET). A conductive contact may be coupled to a body region of the vertical pillar.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Inventors: Haitao Liu, Yunfei Gao, Kamal M. Karda, Deepak Chandra Pandey, Sanh D. Tang, Litao Yang
  • Publication number: 20200365606
    Abstract: Some embodiments include an integrated assembly having a ferroelectric transistor body region between a first comparative digit line and a second comparative digit line. A carrier-reservoir structure is coupled with the ferroelectric transistor body region through an extension that passes along a side of the first comparative digit line. Some embodiments include an integrated assembly having a conductive structure over a carrier-reservoir structure. A bottom of the conductive structure is spaced from the carrier-reservoir structure by an insulative region. A ferroelectric transistor is over the conductive structure. The ferroelectric transistor has a bottom source/drain region over the conductive structure, has a body region over the bottom source/drain region, and has a top source/drain region over the body region. An extension extends upwardly from the carrier-reservoir structure, along a side of the conductive structure, and to a bottom of the body region.
    Type: Application
    Filed: July 28, 2020
    Publication date: November 19, 2020
    Applicant: Micron Technology, Inc.
    Inventors: Kamal M. Karda, Haitao Liu
  • Publication number: 20200350323
    Abstract: A memory cell includes a select device and a capacitor electrically coupled in series with the select device. The capacitor includes two conductive capacitor electrodes having ferroelectric material there-between. The capacitor has an intrinsic current leakage path from one of the capacitor electrodes to the other through the ferroelectric material. There is a parallel current leakage path from the one capacitor electrode to the other. The parallel current leakage path is circuit-parallel the intrinsic path and of lower total resistance than the intrinsic path. Other aspects are disclosed.
    Type: Application
    Filed: July 13, 2020
    Publication date: November 5, 2020
    Applicant: Micron Technology, Inc.
    Inventors: Kamal M. Karda, Qian Tao, Durai Vishak Nirmal Ramaswamy, Haitao Liu, Kirk D. Prall, Ashonita Chavan
  • Publication number: 20200350440
    Abstract: A transistor comprises a channel region between a source region and a drain region, a dielectric material adjacent to the channel region, an electrode adjacent to the dielectric material, and an electrolyte between the dielectric material and the electrode. Related semiconductor devices comprising at least one transistors, related electronic systems, and related methods are also disclosed.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 5, 2020
    Inventors: Yunfei Gao, Kamal M. Karda, Stephen J. Kramer, Gurtej S. Sandhu, Sumeet C. Pandey, Haitao Liu