Patents by Inventor David J. Frank
David J. Frank 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).
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Patent number: 8872274Abstract: An upside-down p-FET is provided on a donor substrate. The upside-down p-FET includes: self-terminating e-SiGe source and drain regions; a cap of self-aligning silicide/germanide over the e-SiGe source and drain regions; a silicon channel region connecting the e-SiGe source and drain regions; buried oxide above the silicon channel region; and a gate controlling current flow from the e-SiGe source region to the e-SiGe drain region.Type: GrantFiled: March 5, 2014Date of Patent: October 28, 2014Assignee: International Business Machines CorporationInventors: Guy M Cohen, David J Frank, Isaac Lauer
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Patent number: 8785995Abstract: Ferroelectric semiconductor switching devices are provided, including field effect transistor (FET) devices having gate stack structures formed with a ferroelectric layer disposed between a gate contact and a thin conductive layer (“quantum conductive layer”). The gate contact and ferroelectric layer serve to modulate an effective work function of the thin conductive layer. The thin conductive layer with the modulated work function is coupled to a semiconductor channel layer to modulate current flow through the semiconductor and achieve a steep sub-threshold slope.Type: GrantFiled: May 16, 2011Date of Patent: July 22, 2014Assignee: International Business Machines CorporationInventors: Catherine A. Dubourdieu, David J. Frank, Martin M. Frank, Vijay Narayanan, Paul M. Solomon, Thomas N. Theis
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Publication number: 20140183637Abstract: An upside-down p-FET is provided on a donor substrate. The upside-down p-FET includes: self-terminating e-SiGe source and drain regions; a cap of self-aligning silicide/germanide over the e-SiGe source and drain regions; a silicon channel region connecting the e-SiGe source and drain regions; buried oxide above the silicon channel region; and a gate controlling current flow from the e-SiGe source region to the e-SiGe drain region.Type: ApplicationFiled: March 5, 2014Publication date: July 3, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: GUY M. COHEN, DAVID J. FRANK, ISAAC LAUER
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Publication number: 20140145264Abstract: Methods of wiring to a transistor and a related transistor are disclosed. In one embodiment, the method includes a method of forming wiring to a transistor, the method comprising: forming a transistor on a semiconductor-on-insulator (SOI) substrate using masks that are mirror images of an intended layout, the forming including forming a gate and a source/drain region for each and a channel, the SOI substrate including a semiconductor-on-insulator (SOI) layer, a buried insulator layer and a silicon substrate; forming a dielectric layer over the transistor; bonding the dielectric layer to another substrate; removing the silicon substrate from the SOI substrate to the buried insulator layer; forming a contact to each of the source/drain region and the gate from a channel side of the gate; and forming at least one wiring to the contacts on the channel side of the gate.Type: ApplicationFiled: January 29, 2014Publication date: May 29, 2014Applicant: International Business Machines CorporationInventors: David J. Frank, Douglas C. LaTulipe, JR., Steven E. Steen, Anna W. Topol
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Patent number: 8681409Abstract: A nonvolatile nano-electromechanical system device is provided and includes a cantilever structure, including a beam having an initial shape, which is supported at one end thereof by a supporting base and a beam deflector, including a phase change material (PCM), disposed on a portion of the beam in a non-slip condition with a material of the beam, the PCM taking one of an amorphous phase or a crystalline phase and deflecting the beam from the initial shape when taking the crystalline phase.Type: GrantFiled: August 3, 2012Date of Patent: March 25, 2014Assignee: International Business Machines CorporationInventors: David J. Frank, Guy Cohen
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Publication number: 20120293236Abstract: A nonvolatile nano-electromechanical system device is provided and includes a cantilever structure, including a beam having an initial shape, which is supported at one end thereof by a supporting base and a beam deflector, including a phase change material (PCM), disposed on a portion of the beam in a non-slip condition with a material of the beam, the PCM taking one of an amorphous phase or a crystalline phase and deflecting the beam from the initial shape when taking the crystalline phase.Type: ApplicationFiled: August 3, 2012Publication date: November 22, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David J. Frank, Guy Cohen
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Publication number: 20120292677Abstract: Ferroelectric semiconductor switching devices are provided, including field effect transistor (FET) devices having gate stack structures formed with a ferroelectric layer disposed between a gate contact and a thin conductive layer (“quantum conductive layer”) . The gate contact and ferroelectric layer serve to modulate an effective work function of the thin conductive layer. The thin conductive layer with the modulated work function is coupled to a semiconductor channel layer to modulate current flow through the semiconductor and achieve a steep sub-threshold slope.Type: ApplicationFiled: May 16, 2011Publication date: November 22, 2012Applicant: International Business Machines CorporationInventors: Catherine A. Dubourdieu, David J. Frank, Martin M. Frank, Vijay Narayanan, Paul M. Solomon, Thomas N. Theis
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Patent number: 8314983Abstract: A nonvolatile nano-electromechanical system device is provided and includes a cantilever structure, including a beam having an initial shape, which is supported at one end thereof by a supporting base and a beam deflector, including a phase change material (PCM), disposed on a portion of the beam in a non-slip condition with a material of the beam, the PCM taking one of an amorphous phase or a crystalline phase and deflecting the beam from the initial shape when taking the crystalline phase.Type: GrantFiled: November 10, 2009Date of Patent: November 20, 2012Assignee: International Business Machines CorporationInventors: David J. Frank, Guy Cohen
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Publication number: 20120179412Abstract: Circuits for measuring and characterizing random variations in device characteristics of integrated circuit devices.Type: ApplicationFiled: March 19, 2012Publication date: July 12, 2012Applicant: International Business Machines CorporationInventors: Azeez Bhavnagarwala, David J. Frank, Stephen V. Kosonocky
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Patent number: 8214169Abstract: Circuits and methods for measuring and characterizing random variations in device characteristics of semiconductor integrated circuit devices, which enable circuit designers to accurately measure and characterize random variations in device characteristics (such as transistor threshold voltage) between neighboring devices resulting from random sources such as dopant fluctuations and line edge roughness, for purposes of integrated circuit design and analysis. In one aspect, a method for characterizing random variations in device mismatch (e.g., threshold voltage mismatch) between a pair of device (e.g., transistors) is performed by obtaining subthreshold DC voltage characteristic data for the device pair, and then determining a distribution in voltage threshold mismatch for the device pair directly from the corresponding subthreshold DC voltage characteristic data.Type: GrantFiled: August 18, 2003Date of Patent: July 3, 2012Assignee: International Business Machines CorporationInventors: Azeez Bhavnagarwala, David J. Frank, Stephen V. Kosonocky
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Publication number: 20110241073Abstract: A method for fabricating an upside-down p-FET includes: fully etching source and drain regions in a donor substrate by etching a silicon-on-insulator layer through buried oxide and partially etching the silicon substrate; refilling a bottom and sidewall surfaces of the etched source and drain regions with epitaxial silicide/germanide to form e-SiGe source and drain regions; capping the source and drain regions with self-aligning silicide/germanide; providing a silicide layer formed over the gate conductor line; providing a first stress liner over the gate and the e-SiGe source and drain regions; depositing a planarized dielectric over the self-aligning silicide/germanide; inverting the donor substrate; bonding the donor substrate to a host wafer; and selectively exposing the buried oxide and the e-SiGe source and drain regions by removing the donor wafer.Type: ApplicationFiled: March 30, 2010Publication date: October 6, 2011Applicant: International Business Machines CorporationInventors: GUY M. COHEN, David J. Frank, Isaac Lauer
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Publication number: 20110109952Abstract: A nonvolatile nano-electromechanical system device is provided and includes a cantilever structure, including a beam having an initial shape, which is supported at one end thereof by a supporting base and a beam deflector, including a phase change material (PCM), disposed on a portion of the beam in a non-slip condition with a material of the beam, the PCM taking one of an amorphous phase or a crystalline phase and deflecting the beam from the initial shape when taking the crystalline phase.Type: ApplicationFiled: November 10, 2009Publication date: May 12, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David J. Frank, Guy Cohen
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Publication number: 20100133616Abstract: Methods of wiring to a transistor and a related transistor are disclosed. In one embodiment, the method includes a method of forming wiring to a transistor, the method comprising: forming a transistor on a semiconductor-on-insulator (SOI) substrate using masks that are mirror images of an intended layout, the forming including forming a gate and a source/drain region for each and a channel, the SOI substrate including a semiconductor-on-insulator (SOI) layer, a buried insulator layer and a silicon substrate; forming a dielectric layer over the transistor; bonding the dielectric layer to another substrate; removing the silicon substrate from the SOI substrate to the buried insulator layer; forming a contact to each of the source/drain region and the gate from a channel side of the gate; and forming at least one wiring to the contacts on the channel side of the gate.Type: ApplicationFiled: February 8, 2010Publication date: June 3, 2010Inventors: David J. Frank, Douglas C. La Tulipe, JR., Steven E. Steen, Anna W. Topol
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Patent number: 7666723Abstract: Methods of wiring to a transistor and a related transistor are disclosed. In one embodiment, the method includes a method of forming wiring to a transistor, the method comprising: forming a transistor on a semiconductor-on-insulator (SOI) substrate using masks that are mirror images of an intended layout, the forming including forming a gate and a source/drain region for each and a channel, the SOI substrate including a semiconductor-on-insulator (SOI) layer, a buried insulator layer and a silicon substrate; forming a dielectric layer over the transistor; bonding the dielectric layer to another substrate; removing the silicon substrate from the SOI substrate to the buried insulator layer; forming a contact to each of the source/drain region and the gate from a channel side of the gate; and forming at least one wiring to the contacts on the channel side of the gate.Type: GrantFiled: February 22, 2007Date of Patent: February 23, 2010Assignee: International Business Machines CorporationInventors: David J. Frank, Douglas C. La Tulipe, Jr., Steven E. Steen, Anna W. Topol
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Patent number: 7488630Abstract: A method which is intended to facilitate and/or simplify the process of fabricating interlayer vias by selective modification of the FEOL film stack on a transfer wafer is provided. Specifically, the present invention provides a method in which two dimensional devices are prepared for subsequent integration in a third dimension at the transition between normal FEOL processes by using an existing interlayer contact mask to define regions in which layers of undesirable dielectrics and metal are selectively removed and refilled with a middle-of-the-line (MOL) compatible dielectric film. As presented, the inventive method is compatible with standard FEOL/MOL integration schemes, and it guarantees a homogeneous dielectric film stack specifically in areas where interlayer contacts are to be formed, thus allowing the option of a straightforward integration path, if desired.Type: GrantFiled: March 6, 2007Date of Patent: February 10, 2009Assignee: International Business Machines CorporationInventors: David J. Frank, Douglas C. La Tulipe, Jr., Leathen Shi, Steven E. Steen, Anna W. Topol
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Publication number: 20080217782Abstract: A method which is intended to facilitate and/or simplify the process of fabricating interlayer vias by selective modification of the FEOL film stack on a transfer wafer is provided. Specifically, the present invention provides a method in which two dimensional devices are prepared for subsequent integration in a third dimension at the transition between normal FEOL processes by using an existing interlayer contact mask to define regions in which layers of undesirable dielectrics and metal are selectively removed and refilled with a middle-of-the-line (MOL) compatible dielectric film. As presented, the inventive method is compatible with standard FEOL/MOL integration schemes, and it guarantees a homogeneous dielectric film stack specifically in areas where interlayer contacts are to be formed, thus allowing the option of a straightforward integration path, if desired.Type: ApplicationFiled: March 6, 2007Publication date: September 11, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David J. Frank, Douglas C. La Tulipe, Leathen Shi, Steven E. Steen, Anna W. Topol
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Publication number: 20080206977Abstract: Methods of wiring to a transistor and a related transistor are disclosed. In one embodiment, the method includes a method of forming wiring to a transistor, the method comprising: forming a transistor on a semiconductor-on-insulator (SOI) substrate using masks that are mirror images of an intended layout, the forming including forming a gate and a source/drain region for each and a channel, the SOI substrate including a semiconductor-on-insulator (SOI) layer, a buried insulator layer and a silicon substrate; forming a dielectric layer over the transistor; bonding the dielectric layer to another substrate; removing the silicon substrate from the SOI substrate to the buried insulator layer; forming a contact to each of the source/drain region and the gate from a channel side of the gate; and forming at least one wiring to the contacts on the channel side of the gate.Type: ApplicationFiled: February 22, 2007Publication date: August 28, 2008Inventors: David J. Frank, Douglas C. La Tulipe, Steven E. Steen, Anna W. Topol
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Patent number: 7342301Abstract: A connection device includes a plurality of re-configurable vias that connect a first metal layer to a second metal layer. An actuating element is disposed between the first metal layer and the second metal layer. The actuating element changes the configuration of the plurality of re-configurable vias to change the plurality of re-configurable vias between a conductive state and a non-conductive state.Type: GrantFiled: May 9, 2006Date of Patent: March 11, 2008Assignee: International Business Machines CorporationInventors: David J. Frank, Kathryn W. Guarini, Christopher B. Murray, Xinlin Wang, Hon-Sum Philip Wong
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Patent number: 7214972Abstract: A metal oxide semiconductor field effect transistor (MOSFET) device is provided that includes a localized strained device channel and adjoining source/drain junctions that are unstrained. The MOSFET device has a very high channel carrier mobility, while maintaining a very low leakage junction.Type: GrantFiled: April 25, 2005Date of Patent: May 8, 2007Assignee: International Business Machines CorporationInventors: Hussein I. Hanafi, David J. Frank, Kevin K. Chan
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Patent number: 7074707Abstract: A connection device includes a plurality of re-configurable vias that connect a first metal layer to a second metal layer. An actuating element is disposed between the first metal layer and the second metal layer. The actuating element changes the configuration of the plurality of re-configurable vias to change the plurality of re-configurable vias between a conductive state and a non-conductive state.Type: GrantFiled: September 15, 2003Date of Patent: July 11, 2006Assignee: International Business Machines CorporationInventors: David J. Frank, Kathryn W. Guarini, Christopher B. Murray, Xinlin Wang, Hon-Sum Philip Wong