Patents by Inventor Deepak C. Sekar

Deepak C. Sekar 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).

  • Patent number: 11488997
    Abstract: An integrated device, the device including: a first level including a first mono-crystal layer, the first mono-crystal layer including a plurality of single crystal transistors; an overlaying oxide on top of the first level; a second level including a second mono-crystal layer, the second level overlaying the oxide, where the second mono-crystal layer includes a plurality of semiconductor devices; a third level overlaying the second level, where the third level includes a plurality of image sensors, where the second level is bonded to the first level, where the bonded includes an oxide to oxide bond; and an isolation layer disposed between the second mono-crystal layer and the third level.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: November 1, 2022
    Assignee: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Patent number: 11482440
    Abstract: A semiconductor device, the device including: a first single crystal substrate and plurality of logic circuits, where the first single crystal substrate has a device area, where the device area is significantly larger than a reticle size, where the plurality of logic circuits include an array of processors, where the plurality of logic circuits include a first logic circuit, a second logic circuit, and third logic circuit, where the plurality of logic circuits include switching circuits to support replacing the first logic circuit and the second logic circuit by the third logic circuit; and a built-in-test-circuit (“BIST”), where the built-in-test-circuit is connected to test at least the first logic circuit and the second logic circuit.
    Type: Grant
    Filed: December 5, 2021
    Date of Patent: October 25, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Patent number: 11482438
    Abstract: A method for producing a 3D memory device, the method including: providing a first level including a first single crystal layer and control circuits; forming at least one second level above the first level; performing a first etch step including etching holes within the second level; forming at least one third level above the at least one second level; performing a second etch step including etching holes within the third level; and performing additional processing steps to form a plurality of first memory cells within the second level and a plurality of second memory cells within the third level, where each of the first memory cells include one first transistor, where each of the second memory cells include one second transistor, where at least one of the first or second transistors has a channel, a source, and a drain having a same doping type.
    Type: Grant
    Filed: June 5, 2021
    Date of Patent: October 25, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Patent number: 11482439
    Abstract: A method for producing a 3D memory device including: providing a first level including a single crystal layer and control circuits, where the control circuits include a plurality of first transistors; forming at least one second level above the first level; performing a first etch step including etching holes within the second level; performing processing steps to form a plurality of first memory cells within the second level, where each of the first memory cells include one of a plurality of second transistors, where the control circuits include memory peripheral circuits, where at least one first memory cell is at least partially atop a portion of the memory peripheral circuits, and where fabrication processing of the first transistors accounts for a temperature and time associated with processing the second level and the plurality of second transistors by adjusting a process thermal budget of the first level accordingly.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: October 25, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Publication number: 20220336328
    Abstract: A 3D semiconductor device including: a first level including a single crystal silicon layer and a plurality of first transistors each including a single crystal channel; a first metal layer overlaying the plurality of first transistors; a second metal layer overlaying the first metal layer; a third metal layer overlaying the second metal layer; a second level, where the second level overlays the first level and includes a plurality of second transistors; a fourth metal layer overlaying the second level; and a connective path between the fourth metal layer and either the third metal layer or the second metal layer, where the connective path includes a via disposed through the second level and has a diameter of less than 500 nm and greater than 5 nm, where the third metal layer is connected to provide a power or ground signal to at least one of the second transistors.
    Type: Application
    Filed: June 27, 2022
    Publication date: October 20, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Publication number: 20220336532
    Abstract: A method for producing a 3D semiconductor device including: providing a first level, the first level including a first single crystal layer; forming first alignment marks and control circuits in and/or on the first level, where the control circuits include first single crystal transistors and at least two interconnection metal layers; forming at least one second level disposed above the control circuits; performing a first etch step into the second level; forming at least one third level disposed on top of the second level; performing additional processing steps to form first memory cells within the second level and second memory cells within the third level, where each of the first memory cells include at least one second transistor, where each of the second memory cells include at least one third transistor, and where the additional processing steps include depositing a gate electrode simultaneously for the second and third transistors.
    Type: Application
    Filed: June 27, 2022
    Publication date: October 20, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Deepak C. Sekar, Zvi Or-Bach
  • Publication number: 20220336252
    Abstract: A method for producing a 3D semiconductor device including: providing a first level including a first single crystal layer; forming peripheral circuitry in and/or on the first level, and includes first single crystal transistors; forming a first metal layer on top of the first level; forming a second metal layer on top of the first metal layer; forming second level disposed on top of the second metal layer; performing a first lithography step; forming a third level on top of the second level; performing a second lithography step; processing steps to form first memory cells within the second level and second memory cells within the third level, where the plurality of first memory cells include at least one second transistor, and the plurality of second memory cells include at least one third transistor; and deposit a gate electrode for second and third transistors simultaneously.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 20, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Publication number: 20220336253
    Abstract: A 3D semiconductor device, the device including: a first level including a first single crystal layer, the first level including first transistors, where the first transistors each include a single crystal channel; first metal layers interconnecting at least the first transistors; a second metal layer overlaying the first metal layers; and a second level including a second single crystal layer, the second level including second transistors, where the second level overlays the first level, where the second transistors each include at least two side-gates, where the second level is bonded to the first level, and where the bonded includes oxide to oxide bonds.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 20, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Patent number: 11476181
    Abstract: A 3D semiconductor device including: a first level including a single crystal silicon layer and a plurality of first transistors each including a single crystal channel; a first metal layer overlaying the plurality of first transistors; a second metal layer overlaying the first metal layer; a third metal layer overlaying the second metal layer; a second level, where the second level overlays the first level and includes a plurality of second transistors; a fourth metal layer overlaying the second level; and a connective path between the fourth metal layer and either the third metal layer or the second metal layer, where the connective path includes a via disposed through the second level and has a diameter of less than 500 nm and greater than 5 nm, where the third metal layer is connected to provide a power or ground signal to at least one of the second transistors.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: October 18, 2022
    Assignee: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Publication number: 20220328550
    Abstract: An integrated device, the device including: a first level including a first mono-crystal layer, the first mono-crystal layer including a plurality of single crystal transistors; an overlaying oxide on top of the first level; a second level including a second mono-crystal layer, the second level overlaying the oxide, where the second mono-crystal layer includes a plurality of semiconductor devices; a third level overlaying the second level, where the third level includes a plurality of image sensors, where the second level is bonded to the first level, where the bonded includes an oxide to oxide bond; and an isolation layer disposed between the second mono-crystal layer and the third level.
    Type: Application
    Filed: June 20, 2022
    Publication date: October 13, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Patent number: 11469271
    Abstract: A method for producing a 3D semiconductor device, the method comprising: providing a first level, said first level comprising a first single crystal layer; forming first alignment marks and control circuits in and/or on said first level, wherein said control circuits comprise first single crystal transistors, and wherein said control circuits comprise at least two interconnection metal layers; forming at least one second level disposed on top of said control circuits; performing a first etch step into said second level; and performing additional processing steps to form a plurality of first memory cells within said second level, wherein each of said memory cells comprise at least one second transistors, and wherein said additional processing steps comprise depositing a gate electrode for said second transistors.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: October 11, 2022
    Assignee: Monolithic 3D Inc.
    Inventors: Deepak C. Sekar, Zvi Or-Bach
  • Patent number: 11462586
    Abstract: A method for producing a 3D semiconductor device including: providing a first level, the first level including a first single crystal layer; forming first alignment marks and control circuits in and/or on the first level, where the control circuits include first single crystal transistors and at least two interconnection metal layers; forming at least one second level disposed above the control circuits; performing a first etch step into the second level; forming at least one third level disposed on top of the second level; performing additional processing steps to form first memory cells within the second level and second memory cells within the third level, where each of the first memory cells include at least one second transistor, where each of the second memory cells include at least one third transistor, and where the additional processing steps include depositing a gate electrode simultaneously for the second and third transistors.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: October 4, 2022
    Assignee: Monolithic 3D Inc.
    Inventors: Deepak C. Sekar, Zvi Or-Bach
  • Patent number: 11443971
    Abstract: A 3D semiconductor device, the device including: a first level including a plurality of first single crystal transistors and a first metal layer, where the first transistors include forming memory control circuits; a second level including a plurality of second transistors; a third level including a plurality of third transistors, where the second level is above the first level, and where the third level is above the second level; a second metal layer above the third level; and a third metal layer above the second metal layer, where the second transistors are aligned to the first transistors with less than 140 nm alignment error, where the second level includes a plurality of first memory cells, where the third level includes a plurality of second memory cells, and where the memory control circuits are designed to adjust a memory write voltage according to the device specific process parameters.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: September 13, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Patent number: 11437368
    Abstract: A multi-level semiconductor device, the device including: a first level including integrated circuits; a second level including a structure designed to conduct electromagnetic waves, where the second level is disposed above the first level, where the first level includes crystalline silicon; and an oxide layer disposed between the first level and the second level, where the second level is bonded to the oxide layer, and where the bonded includes oxide to oxide bonds.
    Type: Grant
    Filed: April 10, 2022
    Date of Patent: September 6, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Publication number: 20220262666
    Abstract: A 3D semiconductor device including: a first single crystal layer including a plurality of first transistors and a first metal layer, where a second metal layer is disposed atop the first metal layer; a plurality of logic gates including the first metal layer and first transistors; a plurality of second transistors disposed atop the second metal layer; a plurality of third transistors disposed atop the second transistors; a top metal layer disposed atop the third transistors; and a memory array including word-lines, where the memory array includes at least four memory mini arrays, where each of the mini arrays includes at least two rows by two columns of memory cells, where each memory cell includes one of the second transistors or one of the third transistors, and where one of the second transistors is self-aligned to one of the third transistors, being processed following a same lithography step.
    Type: Application
    Filed: May 2, 2022
    Publication date: August 18, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar
  • Patent number: 11410912
    Abstract: A 3D semiconductor device, the device including: a first level including a plurality of first metal layers; a second level, where the second level overlays the first level, where the second level includes at least one single crystal silicon layer, where the second level includes a plurality of transistors, where each of the plurality of transistors includes a single crystal channel, where the second level includes a plurality of second metal layers, where the plurality of second metal layers include interconnections between the plurality of transistors, and where the second level is overlaid by a first isolation layer; and a connective path between the plurality of transistors and the plurality of first metal layers, where the connective path includes a via disposed through at least the single crystal silicon layer, and where the via has a diameter of less than 400 nm and greater than 5 nm.
    Type: Grant
    Filed: October 2, 2021
    Date of Patent: August 9, 2022
    Assignee: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Publication number: 20220246682
    Abstract: A method for producing a 3D semiconductor device, the method comprising: providing a first level, said first level comprising a first single crystal layer; forming first alignment marks and control circuits in and/or on said first level, wherein said control circuits comprise first single crystal transistors, and wherein said control circuits comprise at least two interconnection metal layers; forming at least one second level disposed on top of said control circuits; performing a first etch step into said second level; and performing additional processing steps to form a plurality of first memory cells within said second level, wherein each of said memory cells comprise at least one second transistors, and wherein said additional processing steps comprise depositing a gate electrode for said second transistors.
    Type: Application
    Filed: April 12, 2022
    Publication date: August 4, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Deepak C. Sekar, Zvi Or-Bach
  • Patent number: 11404466
    Abstract: An integrated device, the device including: a first level including a first mono-crystal layer, the first mono-crystal layer including a plurality of single crystal transistors; an overlaying oxide on top of the first level; a second level including a second mono-crystal layer, the second level overlaying the oxide, where the second mono-crystal layer includes a plurality of first image sensors; and a third level overlaying the second level, where the third level includes a plurality of second image sensors, where the second level is bonded to the first level, where the bonded includes an oxide to oxide bond; and an isolation layer disposed between the second mono-crystal layer and the third level.
    Type: Grant
    Filed: August 14, 2021
    Date of Patent: August 2, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Publication number: 20220238514
    Abstract: A multi-level semiconductor device, the device including: a first level including integrated circuits; a second level including a structure designed to conduct electromagnetic waves, where the second level is disposed above the first level, where the first level includes crystalline silicon; and an oxide layer disposed between the first level and the second level, where the second level is bonded to the oxide layer, and where the bonded includes oxide to oxide bonds.
    Type: Application
    Filed: April 10, 2022
    Publication date: July 28, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist
  • Publication number: 20220238367
    Abstract: A 3D semiconductor device including: a first level including a first single-crystal layer, a plurality of first transistors, a first metal layer (includes interconnection of first transistors), and a second metal layer, where first transistors' interconnection includes forming logic gates; a plurality of second transistors disposed atop, at least in part, of logic gates; a plurality of third transistors disposed atop, at least in part, of the second transistors; a third metal layer disposed above, at least in part, the third transistors; a global grid to distribute power and overlaying, at least in part, the third metal layer; a local grid to distribute power to the logic gates, the local grid is disposed below, at least in part, the second transistors, where the second transistors are aligned to the first transistors with less than 40 nm misalignment, where at least one of the second transistors includes a metal gate.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Applicant: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Brian Cronquist, Deepak C. Sekar