Patents Assigned to Kepler Compute Inc.
  • Patent number: 12016185
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A trench capacitor including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density dielectric material.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: June 18, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Somilkumar J. Rathi, Noriyuki Sato, Niloy Mukherjee, Rajeev Kumar Dokania, Amrita Mathuriya, Tanay Gosavi, Pratyush Pandey, Jason Y. Wu, Sasikanth Manipatruni
  • Patent number: 12015402
    Abstract: Asynchronous circuit elements are described. Asynchronous circuit elements include a consensus element (c-element), completion tree, and validity tree. The c-element is implemented using adjustable threshold based multi-input capacitive circuitries. The completion tree comprises a plurality of c-elements organized in a tree formation. The validity tree comprises OR gates followed by c-elements. The multi-input capacitive circuitries include capacitive structures that may comprise linear dielectric, paraelectric dielectric, or ferroelectric dielectric. The capacitors can be planar or non-planar. The capacitors may be stacked vertically to reduce footprint of the various asynchronous circuitries.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: June 18, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Amrita Mathuriya, Nabil Imam, Ikenna Odinaka, Rafael Rios, Rajeev Kumar Dokania, Sasikanth Manipatruni
  • Patent number: 12009820
    Abstract: Asynchronous circuit elements are described. Asynchronous circuit elements include a consensus element (c-element), completion tree, and validity tree. The c-element is implemented using adjustable threshold based multi-input capacitive circuitries. The completion tree comprises a plurality of c-elements organized in a tree formation. The validity tree comprises OR gates followed by c-elements. The multi-input capacitive circuitries include capacitive structures that may comprise linear dielectric, paraelectric dielectric, or ferroelectric dielectric. The capacitors can be planar or non-planar. The capacitors may be stacked vertically to reduce footprint of the various asynchronous circuitries.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: June 11, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Amrita Mathuriya, Nabil Imam, Ikenna Odinaka, Rafael Rios, Rajeev Kumar Dokania, Sasikanth Manipatruni
  • Patent number: 12001266
    Abstract: A packaging technology to improve performance of an AI processing system resulting in an ultra-high bandwidth system. An IC package is provided which comprises: a substrate; a first die on the substrate, and a second die stacked over the first die. The first die can be a first logic die (e.g., a compute chip, CPU, GPU, etc.) while the second die can be a compute chiplet comprising ferroelectric or paraelectric logic. Both dies can include ferroelectric or paraelectric logic. The ferroelectric/paraelectric logic may include AND gates, OR gates, complex gates, majority, minority, and/or threshold gates, sequential logic, etc. The IC package can be in a 3D or 2.5D configuration that implements logic-on-logic stacking configuration. The 3D or 2.5D packaging configurations have chips or chiplets designed to have time distributed or spatially distributed processing. The logic of chips or chiplets is segregated so that one chip in a 3D or 2.5D stacking arrangement is hot at a time.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: June 4, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Amrita Mathuriya, Christopher B. Wilkerson, Rajeev Kumar Dokania, Debo Olaosebikan, Sasikanth Manipatruni
  • Patent number: 11996438
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A trench capacitor including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density dielectric material.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: May 28, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Somilkumar J. Rathi, Noriyuki Sato, Niloy Mukherjee, Rajeev Kumar Dokania, Amrita Mathuriya, Tanay Gosavi, Pratyush Pandey, Jason Y. Wu, Sasikanth Manipatruni
  • Patent number: 11997853
    Abstract: A configuration for efficiently placing a group of capacitors with one terminal connected to a common node is described. The capacitors are stacked and folded along the common node. In a stack and fold configuration, devices are stacked vertically (directly or with a horizontal offset) with one terminal of the devices being shared to a common node, and further the capacitors are placed along both sides of the common node. The common node is a point of fold. In one example, the devices are capacitors. N number of capacitors can be divided in L number of stack layers such that there are N/L capacitors in each stacked layer. The N/L capacitors are shorted together with an electrode (e.g., bottom electrode). The electrode can be metal, a conducting oxide, or a combination of a conducting oxide and a barrier material. The capacitors can be planar, non-planar or replaced by memory elements.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: May 28, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Rajeev Kumar Dokania, Amrita Mathuriya, Debo Olaosebikan, Tanay Gosavi, Noriyuki Sato, Sasikanth Manipatruni
  • Patent number: 11985831
    Abstract: An apparatus and configuring scheme where a ferroelectric capacitive input circuit can be programmed to perform different logic functions by adjusting the switching threshold of the ferroelectric capacitive input circuit. Digital inputs are received by respective capacitors on first terminals of those capacitors. The second terminals of the capacitors are connected to a summing node. A pull-up and pull-down device are coupled to the summing node. The pull-up and pull-down devices are controlled separately. During a reset phase, the pull-up and pull-down devices are turned on in a sequence, and inputs to the capacitors are set to condition the voltage on node n1. As such, a threshold for the capacitive input circuit is set. After the reset phase, an evaluation phase follows. In the evaluation phase, the output of the capacitive input circuit is determined based on the inputs and the logic function configured during the reset phase.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: May 14, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Amrita Mathuriya, Rafael Rios, Ikenna Odinaka, Rajeev Kumar Dokania, Debo Olaosebikan, Sasikanth Manipatruni
  • Patent number: 11985832
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A trench capacitor including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density dielectric material.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: May 14, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Somilkumar J. Rathi, Noriyuki Sato, Niloy Mukherjee, Rajeev Kumar Dokania, Amrita Mathuriya, Tanay Gosavi, Pratyush Pandey, Jason Y. Wu, Sasikanth Manipatruni
  • Patent number: 11979148
    Abstract: Asynchronous circuit elements are described. Asynchronous circuit elements include a consensus element (c-element), completion tree, and validity tree. The c-element is implemented using adjustable threshold based multi-input capacitive circuitries. The completion tree comprises a plurality of c-elements organized in a tree formation. The validity tree comprises OR gates followed by c-elements. The multi-input capacitive circuitries include capacitive structures that may comprise linear dielectric, paraelectric dielectric, or ferroelectric dielectric. The capacitors can be planar or non-planar. The capacitors may be stacked vertically to reduce footprint of the various asynchronous circuitries.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: May 7, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Amrita Mathuriya, Nabil Imam, Ikenna Odinaka, Rafael Rios, Rajeev Kumar Dokania, Sasikanth Manipatruni
  • Patent number: 11955153
    Abstract: A configuration for efficiently placing a group of capacitors with one terminal connected to a common node is described. The capacitors are stacked and folded along the common node. In a stack and fold configuration, devices are stacked vertically (directly or with a horizontal offset) with one terminal of the devices being shared to a common node, and further the capacitors are placed along both sides of the common node. The common node is a point of fold. In one example, the devices are capacitors. N number of capacitors can be divided in L number of stack layers such that there are N/L capacitors in each stacked layer. The N/L capacitors are shorted together with an electrode (e.g., bottom electrode). The electrode can be metal, a conducting oxide, or a combination of a conducting oxide and a barrier material. The capacitors can be planar, non-planar or replaced by memory elements.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: April 9, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Rajeev Kumar Dokania, Amrita Mathuriya, Debo Olaosebikan, Tanay Gosavi, Noriyuki Sato, Sasikanth Manipatruni
  • Patent number: 11955512
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A trench capacitor including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density dielectric material.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: April 9, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Somilkumar J. Rathi, Noriyuki Sato, Niloy Mukherjee, Rajeev Kumar Dokania, Amrita Mathuriya, Tanay Gosavi, Pratyush Pandey, Jason Y. Wu, Sasikanth Manipatruni
  • Patent number: 11949017
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: April 2, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11949018
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: April 2, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Publication number: 20240099018
    Abstract: Approaches for integrating FE memory arrays into a processor, and the resulting structures are described. Simultaneous integrations of regions with ferroelectric (FE) cells and regions with standard interconnects are also described. FE cells include FE capacitors that include a FE stack of layers, which is encapsulated with a protection material. The protection material protects the FE stack of layers as structures for regular logic are fabricated in the same die.
    Type: Application
    Filed: August 15, 2023
    Publication date: March 21, 2024
    Applicant: Kepler Computing Inc.
    Inventors: Sasikanth Manipatruni, Rajeev Kumar Dokania, Ramamoorthy Ramesh, Gaurav Thareja, Amrita Mathuriya
  • Patent number: 11922105
    Abstract: A computer-aided design (CAD) tool is provided for logic optimization and synthesis. The CAD tool executes a process that involves optimizing power, performance, and area (PPA) of a logic circuit by minimizing a number of CMOS gates, and majority and/or minority gates in the circuit and its depth. The CAD tool implements a methodology of optimizing logic synthesis based on a mix of standard cell libraries (such as AND, OR, NAND, NOR, XOR, Multiplexer, full adder, half adder, etc.) and varying input majority and minority gates (where the number of inputs in the minority and majority gates could vary as odd numbers from 3 and above). The standard cell libraries cells may contain minority and/or majority gates.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: March 5, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ikenna Odinaka, Sasikanth Manipatruni, Darshak Doshi, Rajeev Kumar Dokania, Amrita Mathuriya
  • Patent number: 11916149
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a transistor formed on a silicon substrate and a capacitor electrically connected to the transistor by a conductive via. The capacitor comprises upper and lower conductive oxide electrodes on opposing sides of a polar layer, wherein the lower conductive oxide electrode is electrically connected to a drain of the transistor.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: February 27, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11908943
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: February 20, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Publication number: 20240047426
    Abstract: Described is a packaging technology to improve performance of an AI processing system. An IC package is provided which comprises: a substrate; a first die on the substrate, and a second die stacked over the first die. The first die includes memory and the second die includes computational logic. The first die comprises a ferroelectric RAM (FeRAM) having bit-cells. Each bit-cell comprises an access transistor and a capacitor including ferroelectric material. The access transistor is coupled to the ferroelectric material. The FeRAM can be FeDRAM or FeSRAM. The memory of the first die may store input data and weight factors. The computational logic of the second die is coupled to the memory of the first die. The second die is an inference die that applies fixed weights for a trained model to an input data to generate an output. In one example, the second die is a training die that enables learning of the weights.
    Type: Application
    Filed: July 25, 2023
    Publication date: February 8, 2024
    Applicant: Kepler Computing Inc.
    Inventors: Sasikanth Manipatruni, Rajeev Kumar Dokania, Amrita Mathuriya, Ramamoorthy Ramesh
  • Patent number: 11888067
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: March 10, 2023
    Date of Patent: January 30, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11888066
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: January 30, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja