Patents by Inventor Crossbar, Inc.

Crossbar, Inc. 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: 20140264250
    Abstract: Providing for two-terminal memory cell structures and fabrication that can be achieved with a relatively low temperature process(es) is described herein. By way of example, disclosed two-terminal memory cells can be formed at least in part as a continuous deposition, potentially yielding improved efficiency in manufacturing. Furthermore, various embodiments can be compatible with some existing complementary metal oxide semiconductor fabrication processes, reducing or avoiding retooling overhead that might be associated with modifying existing fabrication processes in favor of other two-terminal memory cell fabrication techniques.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20140185358
    Abstract: Providing for fabrication, construction, and/or assembly of a resistive random access memory (RRAM) cell is described herein. The RRAM cell can exhibit a non-linear current-voltage relationship. When arranged in a memory array architecture, these cells can significantly mitigate sneak path issues associated with conventional RRAM arrays.
    Type: Application
    Filed: January 3, 2013
    Publication date: July 3, 2014
    Applicant: Crossbar, Inc
    Inventor: Crossbar, Inc
  • Publication number: 20140133211
    Abstract: Providing for a two-terminal memory architecture that can mitigate sneak path current in conjunction with memory operations is described herein. By way of example, a voltage mimicking mechanism can be employed to dynamically drive un-selected bitlines of the memory architecture at a voltage observed by a selected bitline. According to these aspects, changes observed by the selected bitline can be applied to the un-selected bitlines as well. This can help reduce or avoid voltage differences between the selected bitline and the un-selected bitlines, thereby reducing or avoiding sneak path currents between respective bitlines of the memory architecture. Additionally, an input/output based configuration is provided to facilitate reduced sneak path current according to additional aspects of the subject disclosure.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 15, 2014
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20140136852
    Abstract: A secure integrated circuit comprises a lower logic layer, and one or more memory layers disposed above the lower logic layer. A security key is provided in one or more of the memory layers for unlocking the logic layer.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 15, 2014
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20140014890
    Abstract: A non-volatile memory device structure. The device structure includes a first electrode, a second electrode, a resistive switching material comprising an amorphous silicon material overlying the first electrode, and a thickness of dielectric material having a thickness ranging from 5 nm to 10 nm disposed between the second electrode and the resistive switching layer. The thickness of dielectric material is configured to electrically breakdown in a region upon application of an electroforming voltage to the second electrode. The electrical breakdown allows for a metal region having a dimension of less than about 10 nm by 10 nm to form in a portion of the resistive switching material.
    Type: Application
    Filed: April 25, 2013
    Publication date: January 16, 2014
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130214241
    Abstract: A method of forming a disturb-resistant non volatile memory device. The method includes providing a semiconductor substrate having a surface region and forming a first dielectric material overlying the surface region. A first wiring material overlies the first dielectric material, a doped polysilicon material overlies the first wiring material, and an amorphous silicon switching material overlies the said polysilicon material. The switching material is subjected to a first patterning and etching process to separating a first strip of switching material from a second strip of switching spatially oriented in a first direction.
    Type: Application
    Filed: January 3, 2013
    Publication date: August 22, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130157457
    Abstract: A method of forming a memory device includes providing a substrate having a surface region, defining a cell region and first and second peripheral regions, sequentially forming a first dielectric material, a first wiring structure for a first array of devices, and a second dielectric material over the surface region, forming an opening region in the first peripheral region, the opening region extending in a portion of at least the first and second dielectric materials to expose portions of the first wiring structure and the substrate, forming a second wiring material that is overlying the second dielectric material and fills the opening region to form a vertical interconnect structure in the first peripheral region, and forming a second wiring structure from the second wiring material for a second array of devices, the first and second wiring structures being separated from each other and electrically connected by the vertical interconnect structure.
    Type: Application
    Filed: February 11, 2013
    Publication date: June 20, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130148410
    Abstract: A non-volatile variable capacitive device includes a capacitor defined over a substrate, the capacitor having an upper electrode and a resistive memory cell having a first electrode, a second electrode, and a switching layer provided between the first and second electrodes. The resistive memory cell is configured to be placed in a plurality of resistive states according to an electrical signal received. The upper electrode of the capacitive device is coupled to the second electrode of the resistive memory cell. The resistive memory cell is a two-terminal device.
    Type: Application
    Filed: February 11, 2013
    Publication date: June 13, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130134379
    Abstract: A resistive memory device includes a first electrode; a second electrode having a polycrystalline semiconductor layer that includes silicon; a non-crystalline silicon structure provided between the first electrode and the second electrode. The first electrode, second electrode and non-crystalline silicon structure define a two-terminal resistive memory cell.
    Type: Application
    Filed: December 21, 2012
    Publication date: May 30, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130134419
    Abstract: A steering device. The steering device includes an n-type impurity region comprising a zinc oxide material and a p-type impurity region comprising a silicon germanium material. A pn junction region formed from the zinc oxide material and the silicon germanium material. The steering device is a serially coupled to a resistive switching device to provide rectification for the resistive switching device to form a non-volatile memory device.
    Type: Application
    Filed: January 23, 2013
    Publication date: May 30, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130122680
    Abstract: A non-volatile resistive switching memory device. The device includes a first electrode, a second electrode, a switching material in direct contact with a metal region of the second electrode, and a resistive material disposed between the second electrode and the switching material. The resistive material has an ohmic characteristic and a resistance substantially the same as an on state resistance of the switching device. The resistive material allows for a change in a resistance of the switching material upon application of voltage pulse without time delay and free of a reverse bias after the voltage pulse. The first voltage pulse causes a programming current to flow from the second electrode to the first electrode. The resistive material further causes the programming current to be no greater than a predetermined value.
    Type: Application
    Filed: January 11, 2013
    Publication date: May 16, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.
  • Publication number: 20130075689
    Abstract: A memory device includes a first plurality of memory cells arranged in a first crossbar array, a first thickness of dielectric material overlying the first plurality of memory cells, and a second plurality of memory cells arranged in a second crossbar array overlying the first thickness of dielectric material. The memory device further includes a second thickness of dielectric material overlying the second plurality of memory cells. In a specific embodiment, the memory device further includes a Nth thickness of dielectric material overlying an Nth plurality of memory cells, where N is an integer ranging from 3 to 8.
    Type: Application
    Filed: November 16, 2012
    Publication date: March 28, 2013
    Applicant: Crossbar Inc.
    Inventor: Crossbar Inc.
  • Publication number: 20130033923
    Abstract: A non-volatile memory device includes an array of memory units, each having resistive memory cells and a local word line. Each memory cell has a first and a second end, the second ends are coupled to the local word line of the corresponding memory unit. Bit lines are provided, each coupled to the first end of each resistive memory cell. A plurality of select transistors is provided, each associated with one memory unit and having a drain terminal coupled to the local word line of the associated memory unit. First and second global word lines are provided, each coupled to a control terminal of at least one select transistor. First and second source lines are provided, each coupled to a source terminal of at least one select transistor. The memory device is configured to concurrently read out all resistive memory cells in one selected memory unit in a read operation.
    Type: Application
    Filed: October 12, 2012
    Publication date: February 7, 2013
    Applicant: Crossbar, Inc.
    Inventor: Crossbar, Inc.