Patents by Inventor Tak H. Ning

Tak H. Ning 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: 9893207
    Abstract: A memory including a common floating gate structure in simultaneous electrical communication with a first fin structure of a first conductivity type vertically orientated semiconductor device and a second fin structure of a second conductivity type vertically orientated semiconductor device. A back bias electrode is present between the first and second fin structures embedded in a dielectric material positioned in a central portion of the common floating gate structure. The back bias electrode is present overlying an isolation region that is separating a first region of the substrate including the first conductivity type vertically orientated semiconductor device from a second region of the substrate including the second conductivity type vertically orientated semiconductor device.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: February 13, 2018
    Assignee: International Business Machines Corporation
    Inventors: Karthik Balakrishnan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Publication number: 20180040723
    Abstract: Semiconductor structure including germanium-on-insulator lateral bipolar junction transistors and methods of fabricating the same generally include formation of a silicon passivation layer at an interface between the insulator layer and a germanium layer.
    Type: Application
    Filed: August 16, 2017
    Publication date: February 8, 2018
    Inventors: Kevin K. Chan, Tak H. Ning, Jeng-Bang Yau
  • Patent number: 9887278
    Abstract: After forming a trench extending through an insulator layer and an underlying top semiconductor portion that is comprised of a first semiconductor material and a dopant of a first conductivity type to define an emitter and a collector on opposite sides of the trench in the top semiconductor portion, an intrinsic base comprising a second semiconductor material having a bandgap less than a bandgap of the first semiconductor material and a dopant of a second conductivity type opposite the first conductivity type is formed in a lower portion the trench by selective epitaxial growth. The intrinsic base protrudes above the top semiconductor portion and is laterally surrounded by entire top semiconductor portion and a portion of the insulator layer. An extrinsic base is then formed on top of the intrinsic base to fill a remaining volume of the trench by a deposition process.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: February 6, 2018
    Assignee: International Business Machines Corporation
    Inventors: Jin Cai, Kevin K. Chan, Christopher P. D'Emic, Tak H. Ning, Jeng-Bang Yau
  • Publication number: 20180019330
    Abstract: A method of forming a lateral bipolar junction transistor (LBJT) that includes providing a germanium containing layer on a crystalline oxide layer, and patterning the germanium containing layer stopping on the crystalline oxide layer to form a base region. The method may further include forming emitter and collector extension regions on opposing sides of the base region using ion implantation, and epitaxially forming an emitter region and collector region on the crystalline oxide layer into contact with the emitter and collector extension regions. The crystalline oxide layer provides a seed layer for the epitaxial formation of the emitter and collector regions.
    Type: Application
    Filed: July 15, 2016
    Publication date: January 18, 2018
    Inventors: Karthik Balakrishnan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Publication number: 20180012966
    Abstract: A structure includes a laterally diffused (LD) MOSFET with an n-type drift region disposed on a surface of a substrate and a p-type body region contained in the drift region. The structure further includes an n-type source region contained in the p-type body region; an n-type drain region contained in the n-type drift region; a gate electrode disposed on a gate dielectric overlying a portion of the p-type body region and the n-type drift region and an electrically conductive field shield member disposed within the n-type drift region at least partially beneath the p-type body region and generally parallel to the gate electrode. The electrically conductive buried field shield member is contained within and surrounded by a layer of buried field shield oxide and is common to both a first LD MOSFET and a second LD MOSFET that are connected in parallel. Methods to fabricate the structure are also disclosed.
    Type: Application
    Filed: July 8, 2016
    Publication date: January 11, 2018
    Inventor: Tak H. NING
  • Patent number: 9865714
    Abstract: A lateral bipolar junction transistor (LBJT) device that includes an intrinsic III-V semiconductor material having a first band gap; and a base region present on the intrinsic III-V semiconductor material. The base region is composed of an III-V semiconductor material having a second band gap that is less than the first band gap. Emitter and collector regions present on opposing sides of the base region. The emitter and collector regions are composed of epitaxial III-V semiconductor material that is present on the intrinsic III-V semiconductor material.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: January 9, 2018
    Assignee: International Business Machines Corporation
    Inventors: Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Patent number: 9859172
    Abstract: Integrated chips and methods of forming the same include forming a gate stack around a first semiconductor fin and a second semiconductor fin. The gate stack around the second semiconductor fin is etched away. An extrinsic base is formed around the second semiconductor fin in a region exposed by etching away the gate stack.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: January 2, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brent A. Anderson, Kangguo Cheng, Terence B. Hook, Tak H. Ning
  • Patent number: 9852938
    Abstract: After forming an epitaxial germanium layer over a germanium-on-insulator substrate including an insulator layer and a doped germanium layer overlying the insulator layer, the doped germanium layer is selectively removed and a passivation layer is formed within a space between the epitaxial germanium layer and the insulator layer that is formed by removal of the doped germanium layer. A lateral bipolar transistor is subsequently formed in the epitaxial germanium layer.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 26, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kevin K. Chan, Tak H. Ning, Jeng-Bang Yau
  • Publication number: 20170338334
    Abstract: A method of fabricating the vertical field effect transistor includes forming a dielectric layer on a metal semiconductor alloy layer that is present on a substrate of a semiconductor material. The dielectric layer is bonded to a supporting substrate. The substrate of the semiconductor material is cleaved, wherein a remaining portion of the semiconductor material provides a semiconductor surface layer in direct contact with the metal semiconductor alloy layer. A vertical fin type field effect transistor (FinFET) is formed atop the stack of the semiconductor surface layer, the metal semiconductor alloy layer, the dielectric layer and the supporting substrate, wherein the semiconductor surface layer provides at least one of a source region or a drain region of the FinFET and the metal semiconductor alloy provides a contact to the source region or the drain region of the FinFET.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 23, 2017
    Inventors: Kangguo Cheng, Tak H. Ning, Alexander Reznicek
  • Patent number: 9812508
    Abstract: Bipolar junction transistors including inorganic channels and organic emitter junctions are used in some applications for forming high resolution active matrix displays. Arrays of such bipolar junction transistors are electrically connected to thin film switching transistors and provide high drive currents for passive devices such as organic light emitting diodes.
    Type: Grant
    Filed: November 27, 2016
    Date of Patent: November 7, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Bahman Hekmatshoartabari, Tak H. Ning, Davood Shahrjerdi
  • Patent number: 9799777
    Abstract: A floating gate memory cell is provided on a surface of a base semiconductor substrate utilizing a vertical FET processing flow. The floating gate memory cell contains a bottom source/drain region located beneath one end of an epitaxial semiconductor channel material and a top source/drain region located above a second end of the epitaxial semiconductor channel material. A floating gate structure including an inner dielectric material portion, a floating gate portion, an outer dielectric material portion, and a control gate portion is present on each side of the epitaxial semiconductor channel material.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 24, 2017
    Assignee: International Business Machines Corporation
    Inventors: Karthik Balakrishnan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Patent number: 9799756
    Abstract: Semiconductor structure including germanium-on-insulator lateral bipolar junction transistors and methods of fabricating the same generally include formation of a silicon passivation layer at an interface between the insulator layer and a germanium layer.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: October 24, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kevin K. Chan, Tak H. Ning, Jeng-Bang Yau
  • Publication number: 20170301756
    Abstract: A lateral bipolar junction transistor (LBJT) device that may include a dielectric stack including a pedestal of a base region passivating dielectric and a nucleation dielectric layer; and a base region composed of a germanium containing material or a type III-V semiconductor material in contact with the pedestal of the base region passivating dielectric. An emitter region and collector region may be present on opposing sides of the base region contacting a sidewall of the pedestal of the base region passivating dielectric and an upper surface of the nucleation dielectric layer.
    Type: Application
    Filed: May 9, 2017
    Publication date: October 19, 2017
    Inventors: Kevin K. Chan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Publication number: 20170301755
    Abstract: A lateral bipolar junction transistor (LBJT) device that may include a dielectric stack including a pedestal of a base region passivating dielectric and a nucleation dielectric layer; and a base region composed of a germanium containing material or a type III-V semiconductor material in contact with the pedestal of the base region passivating dielectric. An emitter region and collector region may be present on opposing sides of the base region contacting a sidewall of the pedestal of the base region passivating dielectric and an upper surface of the nucleation dielectric layer.
    Type: Application
    Filed: May 9, 2017
    Publication date: October 19, 2017
    Inventors: Kevin K. Chan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Publication number: 20170294537
    Abstract: A vertical transistor has a first air-gap spacer between a gate and a bottom source/drain region, and a second air-gap spacer between the gate and the contact to the bottom source/drain region. A dielectric layer disposed between the gate and the contact to the top source/drain decreases parasitic capacitance and inhibits electrical shorting.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 12, 2017
    Inventors: Kangguo Cheng, Tak H. Ning
  • Publication number: 20170294525
    Abstract: A lateral bipolar junction transistor (LBJT) device that includes an intrinsic III-V semiconductor material having a first band gap; and a base region present on the intrinsic III-V semiconductor material. The base region is composed of an III-V semiconductor material having a second band gap that is less than the first band gap. Emitter and collector regions present on opposing sides of the base region. The emitter and collector regions are composed of epitaxial III-V semiconductor material that is present on the intrinsic III-V semiconductor material.
    Type: Application
    Filed: April 6, 2016
    Publication date: October 12, 2017
    Inventors: Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Patent number: 9780100
    Abstract: A method of forming a memory device that includes forming a sacrificial gate on a surface of a first source/drain region, and forming a channel opening through the sacrificial gate. The method may further include forming an epitaxial channel region is formed in the channel opening that is in situ doped to have an opposite conductivity type as the first of the source/drain region. A second source/drain region is formed on a portion of the epitaxial channel region opposite the portion of the epitaxial channel region that the first source/drain region is present on, wherein the second source/drain region has a same conductivity type as the conductivity type of the first source/drain region. A memory gate structure including a floating gate and a control gate is substituted for the sacrificial gate.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: October 3, 2017
    Assignee: International Business Machines Corporation
    Inventors: Karthik Balakrishnan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek
  • Patent number: 9773894
    Abstract: A lateral bipolar junction transistor including a base region on a dielectric substrate layer. The base region includes a layered stack of alternating material layers of a first lattice dimension semiconductor material and a second lattice dimension semiconductor material. The first lattice dimension semiconductor material is different from the second lattice dimension semiconductor material to provide a strained base region. A collector region is present on the dielectric substrate layer in contact with a first side of the base region. An emitter region is present on the dielectric substrate in contact with a second side of the base region that is opposite the first side of the base region.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: September 26, 2017
    Assignee: International Business Machines Corporation
    Inventors: Kevin K. Chan, Bahman Hekmatshoartabari, Tak H. Ning
  • Publication number: 20170263656
    Abstract: An integrated radiation sensor for detecting the presence of an environmental material and/or condition includes a sensing structure and first and second lateral bipolar junction transistors (BJTs) having opposite polarities. The first lateral BJT has a base that is electrically coupled to the sensing structure and is configured to generate an output signal indicative of a change in stored charge in the sensing structure. The second lateral BJT is configured to amplify the output signal of the first bipolar junction transistor. The first and second lateral BJTs, the sensing structure, and the substrate on which they are formed comprise a monolithic structure.
    Type: Application
    Filed: May 22, 2017
    Publication date: September 14, 2017
    Inventors: MICHAEL S. GORDON, TAK H. NING, KENNETH P. RODBELL, JENG-BANG YAU
  • Patent number: 9761608
    Abstract: A method comprises forming shallow trenches in an intrinsic base semiconductor layer and forming a first base layer thereon; applying a first mask to the layer; etching the first base layer; forming a second base layer on the intrinsic base semiconductor layer adjacent the first base layer; removing the first mask; applying a second mask to the base layers; simultaneously etching the layers to produce extrinsic bases of reduced cross dimensions; disposing spacers on the extrinsic bases; etching around the bases leaving the intrinsic base semiconductor layer under the bases and spacers; implanting ions into sides of the intrinsic base semiconductor layer under the first extrinsic base to form a first emitter/collector junction and into sides of the intrinsic base semiconductor layer under the second extrinsic base to form a second emitter/collector junction; depositing semiconductor material adjacent to the junctions and the trenches; and removing the applied second mask.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: September 12, 2017
    Assignee: International Business Machines Corporation
    Inventors: Karthik Balakrishnan, Pouya Hashemi, Tak H. Ning, Alexander Reznicek