Patents Represented by Attorney, Agent or Law Firm William D. Sabo
  • Patent number: 7436211
    Abstract: The present invention provides a transparent latch circuit capable of performing a scan test in general scan design (GSD). In the transparent latch circuit a test signal is at a Low level during normal operation. Since a latch stop circuit outputs a High-level latch stop signal, a slave latch circuit has a received signal pass through it directly and a master latch circuit operates as a latch circuit in response to a signal output from an inverter. On the other hand, a test signal is at a High level during scan test. At this point, the latch stop circuit outputs a signal complementary to the signal output from the inverter. Therefore, the master latch circuit and the slave latch circuit operate as latch circuits responding to signals complementary to each other. Thereby, the entire transparent latch circuit operates as a flip-flop circuit.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: October 14, 2008
    Assignee: International Business Machines Corporation
    Inventor: Makoto Ueda
  • Patent number: 7098083
    Abstract: A programmable element that has a first diode having an electrode and a first insulator disposed between the substrate and said electrode of said first device, said first insulator having a first value of a given characteristic, and an FET having an electrode and a second insulator disposed between the substrate and said electrode of said second device, said second insulator having a second value of said given characteristic that is different from said first value. The electrodes of the diode and the FET are coupled to one another, and a source of programming energy is coupled to the diode to cause it to permanently decrease in resistivity when programmed. The programmed state of the diode is indicated by a current in the FET, which is read by a sense latch. Thus a small resistance change in the diode translates to a large signal gain/change in the latch. This allows the diode to be programmed at lower voltages.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: August 29, 2006
    Assignee: International Business Machines Corporation
    Inventors: John A. Fifield, Russell J. Houghton, William R. Tonti
  • Patent number: 7052958
    Abstract: The present invention provides a device design and method for forming the same that results in Fin Field Effect Transistors having Non-Volatile Random Access Memory (NVRAM) capability. NVRAM capability arises from the presence of double floating gates arranged on and insulated from a semiconductor fin body, and a control gate arranged on and insulated from the double floating gates.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 30, 2006
    Assignee: International Business Machines Corporation
    Inventors: David M. Fried, Chung Hon Lam, Edward J. Nowak
  • Patent number: 7041581
    Abstract: The preferred embodiment of the present invention overcomes the limitations of the prior art and provides a device and method to increase the latch-up immunity of CMOS devices by forming a non-dopant region near the edge of a dopant region. The preferred embodiment method to increase the latch-up immunity of CMOS devices uses hybrid photoresist to selectively form non-dopant implants near the edges of the N-well and/or P-well. The non-dopant implants suppress diffusion of dopant in the wells resulting in greater control of well spacing, and hence reducing the gain of the parasitic transistor. This reduces the propensity of the CMOS device to latch-up. The preferred embodiment method allows the non-dopant implants to be formed without requiring additional masking steps over the prior art methods.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: May 9, 2006
    Assignee: International Business Machines Corporation
    Inventors: Steven H. Voldman, Louis D. Lanzerotu
  • Patent number: 6982227
    Abstract: A method of reworking BEOL (back end of a processing line) metallization levels of damascene metallurgy comprises forming a plurality of BEOL metallization levels over a substrate, forming line and via portions in the BEOL metallization levels, selectively removing at least one of the BEOL metallization levels to expose the line and via portions, and replacing the removed BEOL metallization levels with at least one new BEOL metallization level, wherein the BEOL metallization levels comprise a first dielectric layer and a second dielectric layer, and wherein the first dielectric layer comprising a lower dielectric constant material than the second dielectric layer.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: January 3, 2006
    Assignee: International Business Machines Corporation
    Inventors: Edward C. Cooney, III, Robert M. Geffken, Vincent J. McGahay, William T. Motsiff, Mark P. Murray, Amanda L. Piper, Anthony K. Stamper, David C. Thomas, Christy S. Tyberg, Elizabeth T. Webster
  • Patent number: 6958506
    Abstract: Methods of forming front-end-of the line (FEOL) capacitors such as polysilicon-polysilicon capacitors and metal-insulator-silicon capacitors are provided that are capable of incorporating a high-dielectric constant (k of greater than about 8) into the capacitor structure. The inventive methods provide high capacitance/area devices with low series resistance of the top and bottom electrodes for high frequency responses. The inventive methods provide a significant reduction in chip size, especially in analog and mixed-signal applications where large areas of capacitance are used.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: October 25, 2005
    Assignee: International Business Machines Corporation
    Inventors: Evgeni P. Gousev, Harald F. Okorn-Schmidt, Arne W. Ballantine, Douglas A. Buchanan, Eduard A. Cartier, Douglas D. Coolbaugh
  • Patent number: 6940130
    Abstract: A body contact structure utilizing an insulating structure between the body contact portion of the active area and the transistor portion of the active area is disclosed. In one embodiment, the present invention substitutes an insulator for at least a portion of the gate layer in the regions between the transistor and the body contact. In another embodiment, a portion of the gate layer is removed and replaced with an insulative layer in regions between the transistor and the body contact. In still another embodiment, the insulative structure is formed by forming multiple layers of gate dielectric between the gate and the body in regions between the transistor and the body contact. The body contact produced by these methods adds no significant gate capacitance to the gate.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: September 6, 2005
    Assignee: International Business Machines Corporation
    Inventors: Andres Bryant, Peter E. Cottrell, John J. Ellis-Monaghan, Robert J. Gauthier, Jr., Edward J. Nowak, Jed H. Rankin, Fariborz Assaderaghi
  • Patent number: 6919277
    Abstract: Methods and apparatuses are disclosed that can introduce deliberate semiconductor film variation during semiconductor manufacturing to compensate for radial processing differences, to determine optimal device characteristics, or produce small production runs. The present invention radially varies the thickness and/or composition of a semiconductor film to compensate for a known radial variation in the semiconductor film that is caused by performing a subsequent semiconductor processing step on the semiconductor film.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: July 19, 2005
    Assignee: International Business Machines Corporation
    Inventors: Toshiharu Furukawa, Mark C. Hakey, Steven J. Holmes, David V. Horak
  • Patent number: 6884734
    Abstract: A blocking layer is formed on a hard mask having an initial thickness. Lines are fabricated by patterning the blocking layer and the hard mask to provide a line segment, the line segment having a first dimension measured across the line segment; reacting a surface layer of the line segment to form a layer of a reaction product on a remaining portion of the line segment; and removing the reaction product without attacking the remaining portion of the line segment and without attacking the blocking layer and the substrate to form the line segment with a second dimension across the line segment that is smaller than the first dimension. The blocking layer prevents the formation of reaction product on the hard mask so that the initial thickness of the hard mask is maintained. The blocking layer can also serve as an ARC layer for photoresist patterning so that the use of an additional film layer is not required.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: April 26, 2005
    Assignee: International Business Machines Corporation
    Inventors: Frederick W. Buehrer, Derek Chen, William Chu, Scott Crowder, Sadanand V. Deshpande, David V. Horak, Wesley C. Natzle, Hung Y. Ng, Len Y. Tsou, Chienfan Yu
  • Patent number: 6835973
    Abstract: A fusible link for a semiconductor device comprises an insulating substrate and a conductive line pair on the surface of the insulating substrate, with the conductive line pair having spaced ends. A polymer is disposed over the insulating substrate and between the conductive line pair ends. The polymer is capable of being changed from a non-conductive to a conductive state upon exposure to an energy beam. Preferably, the polymer comprises a polyimide, more preferably, a polymer/onium salt mixture, most preferably, a polyaniline polymer doped with a triphenylsufonium salt. The link may further comprise a low &kgr; nanopore/nanofoam dielectric material adjacent the conductive line ends.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: December 28, 2004
    Assignee: International Business Machines Corporation
    Inventors: Timothy H. Daubenspeck, William A. Klaasen, William T. Motsiff, Rosemary A. Previti-Kelly, Jed H. Rankin
  • Patent number: 6827868
    Abstract: A method of forming a fuse structure in which passivating material over the fuse has a controlled, substantially uniform thickness that is provided after C4 metallurgy formation. A laser fuse deletion process for the fuse formed by this method is also disclosed.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: December 7, 2004
    Assignee: International Business Machines Corporation
    Inventors: Timothy H. Daubenspeck, Jeffrey P. Gambino, William T. Motsiff
  • Patent number: 6822472
    Abstract: A detection system and method including a means for performing a test on a semiconductor device and obtaining test data therefrom. The semiconductor device includes an insulating layer, a hard mask layer on a surface of the insulating layer, and a plurality of electrically conductive lines within a trench in the insulating layer. The insulating layer comprises a first dielectric material. The hard mask layer comprises a second dielectric material. The dielectric constant of the second dielectric material exceeds the dielectric constant of the first dielectric material or the second dielectric material comprises an element that is not comprised by the first dielectric material. The test data is a function of a spatial distribution of the hard mask layer on the surface of the insulating layer. The detection system and method includes a means for determining from the test data a measure of the spatial distribution of the hard mask layer on the surface of the insulating layer.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: November 23, 2004
    Assignee: International Business Machines Corporation
    Inventors: Sanjit K. Das, Anthony K. Stamper, Eric J. White
  • Patent number: 6815277
    Abstract: The present invention provides FinFETs on the same substrate utilizing various crystal planes for FET current channels in order to optimize mobility and/or to reduce mobility. An embodiment of the present invention provides a substrate having a surface oriented on a first crystal plane that enables subsequent crystal planes for channels to be utilized. A first transistor is also provided having a first fin body. The first fin body has a sidewall forming a first channel, the sidewall oriented on a second crystal plane to provide a first carrier mobility. A second transistor is also provided having a second fin body. The second fin body has a sidewall forming a second channel, the sidewall oriented on a third crystal plane to provide a second carrier mobility that is different from the first carrier mobility.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: November 9, 2004
    Assignee: International Business Machines Corporation
    Inventors: David M. Fried, Edward J. Nowak
  • Patent number: 6815737
    Abstract: A method for forming a trimmed gate in a transistor comprises the steps of forming a polysilicon gate conductor on a semiconductor substrate and trimming the polysilicon portion by a film growth method chosen from among selective surface oxidation and selective surface nitridation. The trimming step may selectively compensate n-channel and p-channel devices. Also, the trimming film may optionally be removed by a method chosen from among anisotropic and isotropic etching. Further, gate conductor spacers may be formed by anisotropic etching of the grown film. The resulting transistor may comprise a trimmed polysilicon portion of a gate conductor, wherein the trimming occurred by a film growth method chosen from among selective surface oxidation and selective surface nitridation.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: November 9, 2004
    Assignee: International Business Machines Corporation
    Inventors: Toshiharu Furukawa, Mark C. Hakey, Steven J. Holmes, David V. Horak, Paul A. Rabidoux
  • Patent number: 6815319
    Abstract: A linewidth measurement structure for determining linewidths of damascened metal lines formed in an insulator is provided. The linewidth measurement structure including: a damascene polysilicon line formed in the insulator, the polysilicon line having an doped region having a predetermined resistivity.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: November 9, 2004
    Assignee: International Business Machines Corporation
    Inventor: Robert K. Leidy
  • Patent number: 6815838
    Abstract: A laser alignment target is provided having a surface that is out of plane with and has substantially the same first reflectivity as an adjacent surface of the semiconductor device, and a sidewall having a second reflectivity different than the first reflectivity. The target provides sidewalls that provide contrast for finding the target despite loss of contrast created by layers of dielectric over the target and use of short wavelength light.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: November 9, 2004
    Assignee: International Business Machines Corporation
    Inventors: Timothy H. Daubenspeck, Richard A. Gilmour, William T. Motsiff, Christopher D. Muzzy
  • Patent number: 6812075
    Abstract: A vertically oriented FET having a self-aligned dog-bone structure as well as a method for fabricating the same are provided. Specifically, the vertically oriented FET includes a channel region, a source region and a drain region. The channel region has a first horizontal width and the source and drain regions having a second horizontal width that is greater than the first horizontal width. Each of the source and drain regions have tapered portions abutting the channel region with a horizontal width that varies in a substantially linear manner from the first horizontal width to the second horizontal width.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: November 2, 2004
    Assignee: International Business Machines Corporation
    Inventors: David M. Fried, Timothy J. Hoague, Edward J. Nowak, Jed H. Rankin
  • Patent number: 6800938
    Abstract: A semiconductor device which includes, between a copper conductive layer and a low-k organic insulator, a barrier layer comprising an amorphous metallic glass, preferably amorphous tantalum-aluminum. A method of making the semiconductor device is also disclosed.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: October 5, 2004
    Assignee: International Business Machines Corporation
    Inventor: Fen Chen
  • Patent number: 6798066
    Abstract: The present invention relates to dissipating heat from an interconnect formed in a low thermal conductivity dielectric in an integrated circuit apparatus. The integrated circuit apparatus includes integrated circuit devices interconnected by conductive interconnection metallurgy and input/output pads subject to electrostatic discharge events. At least one latent heat of transformation absorber is associated with at least one of the input/output pads for preventing the energy generated by an electrostatic discharge event from damaging the conductive interconnection metallurgy.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: September 28, 2004
    Assignee: International Business Machines Corporation
    Inventors: William T. Motsiff, Timothy D. Sullivan, Jean E. Wynne, Sally J. Yankee
  • Patent number: 6797610
    Abstract: A sublitohgraphic trench is formed in a semiconductor substrate by first forming a microtrench which is subsequently used as a mask. Filled sublithographic trenches are formed with a width corresponding to the width of the microtrenches.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: September 28, 2004
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey P. Gambino, Peter J. Lindgren, Anthony K. Stamper