Patents Assigned to SanDisk Corporation
  • Patent number: 9508422
    Abstract: A non-volatile semiconductor memory device includes an electrically data rewritable non-volatile semiconductor memory cell and a write circuit for writing data in the memory cell, the write circuit writing a data in the memory cells by supplying a write voltage Vpgm and a write control voltage VBL to the memory cell, continuing the writing of the data in the memory cell by changing the value of the write control voltage VBL in response to an advent of a first write state of the memory cell and inhibiting any operation of writing a data to the memory cell by further changing the value of the write control voltage VBL to Vdd in response to an advent of a second write state of the memory cell.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: November 29, 2016
    Assignees: Kabushiki Kaisha Toshiba, SanDisk Corporation
    Inventors: Tomoharu Tanaka, Jian Chen
  • Patent number: 9257189
    Abstract: A non-volatile semiconductor memory device includes an electrically data rewritable non-volatile semiconductor memory cell and a write circuit for writing data in the memory cell, the write circuit writing a data in the memory cells by supplying a write voltage Vpgm and a write control voltage VBL to the memory cell, continuing the writing of the data in the memory cell by changing the value of the write control voltage VBL in response to an advent of a first write state of the memory cell and inhibiting any operation of writing a data to the memory cell by further changing the value of the write control voltage VBL to Vdd in response to an advent of a second write state of the memory cell.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: February 9, 2016
    Assignees: Kabushiki Kaisha Toshiba, SanDisk Corporation
    Inventors: Tomoharu Tanaka, Jian Chen
  • Patent number: 9214525
    Abstract: Methods and apparatuses for electronic devices such as non-volatile memory devices are described. The memory devices include a multi-layer control dielectric, such as a double or triple layer. The multi-layer control dielectric includes a combination of high-k dielectric materials such as aluminum oxide, hafnium oxide, and/or hybrid films of hafnium aluminum oxide. The multi-layer control dielectric provides enhanced characteristics, including increased charge retention, enhanced memory program/erase window, improved reliability and stability, with feasibility for single or multi state (e.g., two, three or four bit) operation.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: December 15, 2015
    Assignee: SanDisk Corporation
    Inventor: Jian Chen
  • Patent number: 9149836
    Abstract: Ligand compositions for use in preparing discrete coated nanostructures are provided, as well as the coated nanostructures themselves and devices incorporating same. Methods for post-deposition shell formation on a nanostructure, for reversibly modifying nanostructures, and for manipulating the electronic properties of nanostructures are also provided. The ligands and coated nanostructures of the present invention are particularly useful for close packed nanostructure compositions, which can have improved quantum confinement and/or reduced cross-talk between nanostructures. Ligands of the present invention are also useful for manipulating the electronic properties of nanostructure compositions (e.g., by modulating energy levels, creating internal bias fields, reducing charge transfer or leakage, etc.).
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: October 6, 2015
    Assignee: SanDisk Corporation
    Inventors: Jeffery A. Whiteford, Mihai A. Buretea, Jian Chen, William P. Freeman, Andreas Meisel, Linh Nguyen, J. Wallace Parce, Erik C. Scher
  • Patent number: 9117516
    Abstract: According to one embodiment, a memory includes memory cells between first conductive lines and second conductive lines. A control circuit is configured to apply a first potential to a first end of a selected first conductive line connected to the selected memory cell among the first conductive lines and first ends of unselected second conductive lines not connected to the selected memory cell among the second conductive lines, apply a second potential larger than the first potential to a first end of a selected second conductive line connected to the selected memory cell among the second conductive lines, apply third potentials smaller than the second potential to first ends of unselected first conductive lines not connected to the selected memory cell among the first conductive lines respectively, and change values of the third potentials based on an address of the selected first conductive line.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: August 25, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, SanDisk Corporation
    Inventors: Takamasa Okawa, Fumitoshi Ito, Youichi Minemura, Takayuki Tsukamoto, Hiroshi Kanno
  • Publication number: 20150179563
    Abstract: According to one embodiment, a semiconductor device includes a first conductive line and a second conductive line including a first extension region in which the first conductive line and the second conductive line extend in a first direction, and a bend region in which the first conductive line and the second conductive line bend with respect to the first direction, a first dummy pattern and a second dummy pattern arranged on extension regions beyond the bend region of the first conductive line and the second conductive line, respectively, in the first direction, a first contact pad and a second contact pad formed beyond the bend region in the first direction, and connected to the first conductive line and the second conductive line, respectively.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, SanDisk Corporation
    Inventors: Satoshi NAGASHIMA, Atsushi SHIMODA, Naoyuki Iida
  • Publication number: 20150078092
    Abstract: A non-volatile semiconductor memory device includes an electrically data rewritable non-volatile semiconductor memory cell and a write circuit for writing data in the memory cell, the write circuit writing a data in the memory cells by supplying a write voltage Vpgm and a write control voltage VBL to the memory cell, continuing the writing of the data in the memory cell by changing the value of the write control voltage VBL in response to an advent of a first write state of the memory cell and inhibiting any operation of writing a data to the memory cell by further changing the value of the write control voltage VBL to Vdd in response to an advent of a second write state of the memory cell.
    Type: Application
    Filed: December 3, 2014
    Publication date: March 19, 2015
    Applicants: SanDisk Corporation, Kabushiki Kaisha Toshiba
    Inventors: Tomoharu Tanaka, Jian Chen
  • Patent number: 8981452
    Abstract: Methods for forming or patterning nanostructure arrays are provided. The methods involve formation of arrays on coatings comprising nanostructure association groups, formation of arrays in spin-on-dielectrics, solvent annealing after nanostructure deposition, patterning using resist, and/or use of devices that facilitate array formation. Related devices for forming nanostructure arrays are also provided, as are devices including nanostructure arrays (e.g., memory devices). Methods for protecting nanostructures from fusion during high temperature processing also are provided.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: March 17, 2015
    Assignee: SanDisk Corporation
    Inventors: Jian Chen, Xiangfeng Duan, Chao Liu, Madhuri Nallabolu, J. Wallace Parce, Srikanth Ranganathan
  • Publication number: 20150073743
    Abstract: According to one embodiment, a temperature sensor includes: a voltage generating part generating (2N?1)-midpoint voltages (N is a natural number equal to or larger than 2) based on a reference voltage which does not depend on a temperature; a sense part generating a temperature sensing voltage which depends on the temperature; and an arithmetic part is configured to generate N-bit temperature data by executing first to N-th operations each comparing the temperature sensing voltage with one of the (2N?1)-midpoint voltages.
    Type: Application
    Filed: March 6, 2014
    Publication date: March 12, 2015
    Applicants: SanDisk Corporation, KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiko SASAKI, Gopinath BALAKRISHNAN
  • Patent number: 8929135
    Abstract: A non-volatile semiconductor memory device includes an electrically data rewritable non-volatile semiconductor memory cell and a write circuit for writing data in the memory cell, the write circuit writing a data in the memory cells by supplying a write voltage Vpgm and a write control voltage VBL to the memory cell, continuing the writing of the data in the memory cell by changing the value of the write control voltage VBL in response to an advent of a first write state of the memory cell and inhibiting any operation of writing a data to the memory cell by further changing the value of the write control voltage VBL to Vdd in response to an advent of a second write state of the memory cell.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: January 6, 2015
    Assignees: Kabushiki Kaisha Toshiba, SanDisk Corporation
    Inventors: Tomoharu Tanaka, Jian Chen
  • Patent number: 8871623
    Abstract: Methods are provided for forming a nanostructure array. An example method includes providing a first layer, providing nanostructures dispersed in a solution comprising a liquid form of a spin-on-dielectric, wherein the nanostructures comprise a silsesquioxane ligand coating, disposing the solution on the first layer, whereby the nanostructures form a monolayer array on the first layer, and curing the liquid form of the spin-on-dielectric to provide a solid form of the spin-on-dielectric. Numerous other aspects are provided.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: October 28, 2014
    Assignee: SanDisk Corporation
    Inventors: Jian Chen, Karen Chu Cruden, Xiangfeng Duan, Chao Liu, J. Wallace Parce
  • Patent number: 8797798
    Abstract: A non-volatile memory system is formed of floating gate memory cells arranged in blocks as the smallest unit of memory cells that are erasable together. One feature is the storage in separate blocks of the characteristics of a large number of blocks of cells in which user data is stored. These characteristics for user data blocks being accessed may, during operation of the memory system by its controller, be stored in a random access memory for ease of access and updating. A typical form of the memory system is as a card that is removably connectable with a host system but may alternatively be implemented in a memory embedded in a host system. The memory cells may be operated with multiple states in order to store more than one bit of data per cell.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: August 5, 2014
    Assignee: Sandisk Corporation
    Inventors: Kevin M. Conley, John S. Mangan, Jeffrey G. Craig
  • Publication number: 20140206182
    Abstract: Methods are provided for forming a nanostructure array. An example method includes providing a first layer, providing nanostructures dispersed in a solution comprising a liquid form of a spin-on-dielectric, wherein the nanostructures comprise a silsesquioxane ligand coating, disposing the solution on the first layer, whereby the nanostructures form a monolayer array on the first layer, and curing the liquid form of the spin-on-dielectric to provide a solid form of the spin-on-dielectric. Numerous other aspects are provided.
    Type: Application
    Filed: April 11, 2014
    Publication date: July 24, 2014
    Applicant: SanDisk Corporation
    Inventors: Jian Chen, Karen Chu Cruden, Xiangfeng Duan, Chao Liu, J. Wallace Parce
  • Publication number: 20140183613
    Abstract: Methods and apparatuses for electronic devices such as non-volatile memory devices are described. The memory devices include a multi-layer control dielectric, such as a double or triple layer. The multi-layer control dielectric includes a combination of high-k dielectric materials such as aluminum oxide, hafnium oxide, and/or hybrid films of hafnium aluminum oxide. The multi-layer control dielectric provides enhanced characteristics, including increased charge retention, enhanced memory program/erase window, improved reliability and stability, with feasibility for single or multi state (e.g., two, three or four bit) operation.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 3, 2014
    Applicant: SanDisk Corporation
    Inventor: Jian Chen
  • Patent number: 8735226
    Abstract: Methods for forming or patterning nanostructure arrays are provided. The methods involve formation of arrays on coatings comprising nanostructure association groups, formation of arrays in spin-on-dielectrics, solvent annealing after nanostructure deposition, patterning using resist, and/or use of devices that facilitate array formation. Related devices for forming nanostructure arrays are also provided, as are devices including nanostructure arrays (e.g., memory devices).
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: May 27, 2014
    Assignee: SanDisk Corporation
    Inventors: Jian Chen, Karen Chu Cruden, Xiangfeng Duan, Chao Liu, J. Wallace Parce
  • Publication number: 20140133234
    Abstract: A non-volatile memory system is formed of floating gate memory cells arranged in blocks as the smallest unit of memory cells that are erasable together. One feature is the storage in separate blocks of the characteristics of a large number of blocks of cells in which user data is stored. These characteristics for user data blocks being accessed may, during operation of the memory system by its controller, be stored in a random access memory for ease of access and updating. A typical form of the memory system is as a card that is removably connectable with a host system but may alternatively be implemented in a memory embedded in a host system. The memory cells may be operated with multiple states in order to store more than one bit of data per cell.
    Type: Application
    Filed: August 1, 2013
    Publication date: May 15, 2014
    Applicant: SanDisk Corporation
    Inventors: Kevin M. Conley, John S. Mangan, Jeffrey G. Craig
  • Patent number: 8700833
    Abstract: A data storage device includes one or more data paths through electrical contacts of the data storage device. The data paths are operably connected to allow bits to be transferred into and out of the data storage device. The data storage device stores an indication of a number of the one or more data paths in a configuration register. A method includes performing, while the data storage device is operatively coupled to a host device, receiving a command of the host device to read the configuration register and providing the indication via at least one of the one or more data paths. Providing the indication enables indicating to the host device the number of the one or more data paths.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: April 15, 2014
    Assignee: Sandisk Corporation
    Inventors: Yoram Cedar, Micky Holtzman, Yosi Pinto
  • Patent number: 8686490
    Abstract: Methods and apparatuses for electronic devices such as non-volatile memory devices are described. The memory devices include a multi-layer control dielectric, such as a double or triple layer. The multi-layer control dielectric includes a combination of high-k dielectric materials such as aluminum oxide, hafnium oxide, and/or hybrid films of hafnium aluminum oxide. The multi-layer control dielectric provides enhanced characteristics, including increased charge retention, enhanced memory program/erase window, improved reliability and stability, with feasibility for single or multi state (e.g., two, three or four bit) operation.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: April 1, 2014
    Assignee: SanDisk Corporation
    Inventor: Jian Chen
  • Publication number: 20140063976
    Abstract: A non-volatile semiconductor memory device includes an electrically data rewritable non-volatile semiconductor memory cell and a write circuit for writing data in the memory cell, the write circuit writing a data in the memory cells by supplying a write voltage Vpgm and a write control voltage VBL to the memory cell, continuing the writing of the data in the memory cell by changing the value of the write control voltage VBL in response to an advent of a first write state of the memory cell and inhibiting any operation of writing a data to the memory cell by further changing the value of the write control voltage VBL to Vdd in response to an advent of a second write state of the memory cell.
    Type: Application
    Filed: November 12, 2013
    Publication date: March 6, 2014
    Applicants: SanDisk Corporation, Kabushiki Kaisha Toshiba
    Inventors: Tomoharu TANAKA, Jian CHEN
  • Publication number: 20140035011
    Abstract: Methods for forming or patterning nanostructure arrays are provided. The methods involve formation of arrays on coatings comprising nanostructure association groups, formation of arrays in spin-on-dielectrics, solvent annealing after nanostructure deposition, patterning using resist, and/or use of devices that facilitate array formation. Related devices for forming nanostructure arrays are also provided, as are devices including nanostructure arrays (e.g., memory devices). Methods for protecting nanostructures from fusion during high temperature processing also are provided.
    Type: Application
    Filed: September 20, 2013
    Publication date: February 6, 2014
    Applicant: SANDISK CORPORATION
    Inventors: Jian Chen, Xiangfeng Duan, Chao Liu, Madhuri Nallabolu, J. Wallace Parce, Srikanth Ranganathan