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).

  • Publication number: 20120273955
    Abstract: A system includes a semiconductor device. The semiconductor device includes a first semiconductor layer comprising first transistors, wherein the first transistors are interconnected by at least one metal layer comprising aluminum or copper. The second mono-crystallized semiconductor layer includes second transistors and is overlaying the at least one metal layer, wherein the second mono-crystallized semiconductor layer is less than 150 nm in thickness, and at least one of the second transistors is an N-type transistor and at least one of the second transistors is a P-type transistor.
    Type: Application
    Filed: June 8, 2012
    Publication date: November 1, 2012
    Applicant: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Brian Cronquist, Israel Beinglass, Jan Lodewijk de Jong, Deepak C. Sekar, Zeev Wurman
  • Patent number: 8298875
    Abstract: A method to fabricate a junction-less transistor comprising: forming at least two regions of semiconductor doping; first region with a relatively high level of dopant concentration and second region with at least 1/10 lower dopant concentration, and etching away a portion of said first region for the formation of the transistor gate.
    Type: Grant
    Filed: March 6, 2011
    Date of Patent: October 30, 2012
    Assignee: Monolithic 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Paul Lim
  • Patent number: 8294159
    Abstract: A method for fabrication of 3D semiconductor devices utilizing a layer transfer and steps for forming transistors on top of a pre-fabricated semiconductor device comprising transistors formed on crystallized semiconductor base layer and metal layer for the transistors interconnections and insulation layer. The advantage of this approach is reduction of the over all metal length used to interconnect the various transistors.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: October 23, 2012
    Assignee: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Israel Beinglass, Jan Lodewijk de Jong
  • Patent number: 8283215
    Abstract: A method for fabricating a light-emitting integrated device, comprises overlying three layers, wherein each of the three layers emits light at a different wavelength, and wherein the overlying comprises one of: performing an atomic species implantation, performing a laser lift-off, performing an etch-back, or chemical-mechanical polishing (CMP).
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: October 9, 2012
    Assignee: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar
  • Publication number: 20120248595
    Abstract: A method of manufacturing a semiconductor device, the method including, providing a first monocrystalline layer including semiconductor regions, overlaying the first monocrystalline layer with an isolation layer, transferring a second monocrystalline layer comprising semiconductor regions to overlay the isolation layer, wherein the first monocrystalline layer and the second monocrystalline layer are formed from substantially different crystal materials; and subsequently etching the second monocrystalline layer as part of forming at least one transistor in the second monocrystalline layer.
    Type: Application
    Filed: June 8, 2012
    Publication date: October 4, 2012
    Applicant: MonolithlC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Israel Beinglass, Ze'ev Wurman, Paul Lim
  • Patent number: 8274130
    Abstract: A storage system and method for forming a storage system that uses punch-through diodes as a steering element in series with a reversible resistivity-switching element is described. The punch-through diode allows bipolar operation of a cross-point memory array. The punch-through diode may have a symmetrical non-linear current/voltage relationship. The punch-through diode has a high current at high bias for selected cells and a low leakage current at low bias for unselected cells. Therefore, it is compatible with bipolar switching in cross-point memory arrays having resistive switching elements. The punch-through diode may be a N+/P?/N+ device or a P+/N?/P+ device.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: September 25, 2012
    Assignee: SanDisk 3D LLC
    Inventors: Andrei Mihnea, Deepak C. Sekar, George Samachisa, Roy Scheuerlein, Li Xiao
  • Patent number: 8273610
    Abstract: A method of manufacturing a semiconductor device, the method including, providing a first monocrystalline layer including semiconductor regions, overlaying the first monocrystalline layer with an isolation layer, transferring a second monocrystalline layer comprising semiconductor regions to overlay the isolation layer, wherein the first monocrystalline layer and the second monocrystalline layer are formed from substantially different crystal materials; and subsequently etching the second monocrystalline layer as part of forming at least one transistor in the second monocrystalline layer.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 25, 2012
    Assignee: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Israel Beinglass, Ze'ev Wurman, Paul Lim
  • Publication number: 20120231572
    Abstract: A method for fabricating an integrated device, the method including, overlying a first crystalline layer onto a second crystalline layer to form a combined layer, wherein one of the first and second crystalline layers is an image sensor layer and at least one of the first and second crystalline layers has been transferred by performing an atomic species implantation, and wherein at least one of the first and second crystalline layers includes single crystal transistors.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 13, 2012
    Inventors: Zvi Or-Bach, Deepak C. Sekar
  • Publication number: 20120223436
    Abstract: A semiconductor device comprising power distribution wires wherein; a portion of said wires have thermal connection to the semiconductor layer and said thermal connection designed to conduct heat but to not conduct electricity.
    Type: Application
    Filed: March 6, 2011
    Publication date: September 6, 2012
    Inventors: Deepak C. Sekar, Zvi Or-Bach, Brian Cronquist
  • Publication number: 20120223738
    Abstract: A method for fabrication of 3D semiconductor devices utilizing a layer transfer and steps for forming transistors on top of a pre-fabricated semiconductor device comprising transistors formed on crystallized semiconductor base layer and metal layer for the transistors interconnections and insulation layer. The advantage of this approach is reduction of the over all metal length used to interconnect the various transistors.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Israel Beinglass, Jan Lodewijk De Jong
  • Publication number: 20120220102
    Abstract: A method of manufacturing semiconductor wafers, the method comprising providing a donor wafer comprising a semiconductor substrate; performing a lithography step and process the said donor wafer accordingly; and performing at least two layers transfer out of said donor wafer wherein each of said at least two layer had been effected by said process
    Type: Application
    Filed: November 22, 2010
    Publication date: August 30, 2012
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquest
  • Patent number: 8237228
    Abstract: A system includes a semiconductor device. The semiconductor device includes a first semiconductor layer comprising first transistors, wherein the first transistors are interconnected by at least one metal layer comprising aluminum or copper. The second mono-crystallized semiconductor layer includes second transistors and is overlaying the at least one metal layer, wherein the second mono-crystallized semiconductor layer is less than 150 nm in thickness, and at least one of the second transistors is an N-type transistor and at least one of the second transistors is a P-type transistor.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: August 7, 2012
    Assignee: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Brian Cronquist, Israel Beinglass, Jan Lodewijk de Jong, Deepak C. Sekar, Zeev Wurman
  • Publication number: 20120193719
    Abstract: A device comprising semiconductor memories, the device comprising: a first layer and a second layer of layer-transferred mono-crystallized silicon, wherein the first layer comprises a first plurality of horizontally-oriented transistors; wherein the second layer comprises a second plurality of horizontally-oriented transistors; and wherein the second plurality of horizontally-oriented transistors overlays the first plurality of horizontally-oriented transistors.
    Type: Application
    Filed: October 13, 2010
    Publication date: August 2, 2012
    Inventors: Zvi Or-Bach, Brian Cronquist, Isreal Beinglass, J.L. de Jong, Deepak C. Sekar
  • Patent number: 8216862
    Abstract: During the manufacture of a set of non-volatile resistance-switching memory elements, a forming process is performed in which a voltage is applied over forming period until a conductive filament is formed in a resistance-switching layer. A heat source at a temperature of 50° C. to 150° C. is applied to expedite the forming process while reducing the required magnitude of the applied voltage. Manufacturing time and reliability are improved. After the forming process, an expedited training process can be performed in which a fixed number of cycles of voltage pulses are applied without verifying the memory elements. Subsequently, the memory elements are verified by determining their read current in an evaluation. Another fixed number of cycles of voltage pulses is applied without verifying the memory elements, if the memory elements do not pass the evaluation.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 10, 2012
    Assignee: SanDisk 3D LLC
    Inventors: Franz Kreupl, Deepak C. Sekar
  • Patent number: 8203148
    Abstract: A device, comprising: a first layer and a second layer wherein both said first layer and said second layer are mono-crystalline, wherein said first layer comprises first transistors, wherein said second layer comprises second transistors, wherein at least one of said second transistors substantially overlays one of said first transistors, and wherein both said first transistors and said second transistors are processed following the same lithography step.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: June 19, 2012
    Assignee: MonolithIC 3D Inc.
    Inventors: Deepak C. Sekar, Zvi Or-Bach
  • Publication number: 20120147657
    Abstract: A storage system and method for operating the storage system that uses reversible resistance-switching elements is described. Techniques are disclosed herein for varying programming conditions to account for different resistances that memory cells have. These techniques can program memory cells in fewer attempts, which can save time and/or power. Techniques are disclosed herein for achieving a high programming bandwidth while reducing the worst case current and/or power consumption.
    Type: Application
    Filed: February 15, 2012
    Publication date: June 14, 2012
    Inventors: Deepak C. Sekar, Klaus Schuegraf, Roy Scheuerlein
  • Publication number: 20120129301
    Abstract: A method of manufacturing a semiconductor device, the method including, providing a first monocrystalline layer including semiconductor regions, overlaying the first monocrystalline layer with an isolation layer, transferring a second monocrystalline layer comprising semiconductor regions to overlay the isolation layer, wherein the first monocrystalline layer and the second monocrystalline layer are formed from substantially different crystal materials; and subsequently etching the second monocrystalline layer as part of forming at least one transistor in the second monocrystalline layer.
    Type: Application
    Filed: October 14, 2011
    Publication date: May 24, 2012
    Applicant: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Israel Beinglass, Ze'ev Wurman, Paul Lim
  • Publication number: 20120107967
    Abstract: A method of manufacturing a semiconductor wafer, the method including: providing a first monocrystalline layer including first transistors and interconnecting metal layers to perform at least one first electronic function; providing a second monocrystalline layer on top of the metal layers, wherein the second monocrystalline layer includes second transistors to perform at least one second electronic function and substituting the at least one first electronic function with the at least one second electronic function.
    Type: Application
    Filed: December 8, 2011
    Publication date: May 3, 2012
    Applicant: MonolithIC 3D Inc.
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist, Israel Beinglass, Jan Lodewijk de Jong
  • Patent number: 8163581
    Abstract: Techniques to utilize layer transfer schemes such as ion-cut to form novel light emitting diodes (LEDs), CMOS image sensors, displays, microdisplays and solar cells are disclosed.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: April 24, 2012
    Assignee: Monolith IC 3D
    Inventors: Zvi Or-Bach, Deepak C. Sekar
  • Publication number: 20120091587
    Abstract: A 3D IC based system comprising a first semiconductor layer comprising first transistors, wherein the first transistors are interconnected by at least one metal layer comprising aluminum or copper; a second mono-crystallized semiconductor layer comprising second transistors and overlaying the metal layer; wherein the second mono-crystallized semiconductor layer thickness is less than 150 nm, and wherein at least one of the second transistors is an N-type transistor and at least one of the second transistors is a P-type transistor.
    Type: Application
    Filed: October 2, 2011
    Publication date: April 19, 2012
    Inventors: Zvi Or-Bach, Deepak C. Sekar, Brian Cronquist