Patents Examined by Tanika Warrior
  • Patent number: 7671445
    Abstract: The present invention provides a system for dissipating any aberrant charge that may accumulate during the fabrication of a semiconductor device segment (200), obviating overstress or break down damage to a focal device structure (208) that might result from uncontrolled dissipation of the aberrant charge. A substrate (202) has first and second intermediate structures (204, 206) disposed atop the substrate, with the focal structure disposed atop the substrate therebetween. A first conductive structure (210) is disposed atop the second intermediate structure, the focal structure, and a portion of the first intermediate structure. A third intermediate structure (214) is disposed contiguously atop the first conductive structure and the first intermediate layer. A void (216) is formed in a peripheral region (218) of device segment, through the first and third intermediate layers down to the substrate.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: March 2, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Weidong Tian, Bradley Sucher, Zafar Imam
  • Patent number: 7646046
    Abstract: A field effect transistor with a fin structure having a first and a second source/drain region; a body region formed within the fin structure and between the first and the second source/drain region; a metallically conductive region formed within a part of the first source/drain region, the metallically conductive region being adjacent to the body region or to a lightly doped region disposed between the body region and the first source/drain region; and a current ballasting region formed within a part of the second source/drain region.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: January 12, 2010
    Assignee: Infineon Technologies AG
    Inventors: Christian Russ, Harald Gossner, Thomas Schulz
  • Patent number: 7645654
    Abstract: A process for manufacturing a Junction Field-Effect Transistor, comprises doping a semiconductor material formed on an insulating substrate with impurities of a first conductivity type to form a well region. The process continues by implanting impurities of a second conductivity type into said well region to form a channel region, and by implanting impurities of the first conductivity type in said well region to form a back gate region. The process continues by forming a trench to expose at least one sidewall of said channel region, wherein the trench extends far enough along the sidewall to expose at least a portion of said back gate region. The process continues by depositing polysilicon to fill said trench along the at least one sidewall of said channel region and at least a portion of said back gate region, wherein at least a portion of the polysilicon will form a gate contact. The polysilicon is then doped with impurities of a first conductivity type.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 12, 2010
    Assignee: DSM Solutions, Inc.
    Inventor: Madhukar B. Vora
  • Patent number: 7615425
    Abstract: The disclosure herein pertains to fashioning an n channel junction field effect transistor (NJFET) and/or a p channel junction field effect transistor (PJFET) with an open drain, where the open drain allows the transistors to operate at higher voltages before experiencing gate leakage current. The open drain allows the voltage to be increased several fold without increasing the size of the transistors. Opening the drain essentially spreads equipotential lines of respective electric fields developed at the drains of the devices so that the local electric fields, and hence the impact ionization rates are reduced to redirect current below the surface of the transistors.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: November 10, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Joe R. Trogolo, Hiroshi Yasuda, Badih El-Kareh, Philipp Steinmann
  • Patent number: 7595244
    Abstract: Fabrication of two differently configured like-polarity insulated-gate field-effect transistors (40 or 42 and 240 or 242) entails introducing multiple body-material semiconductor dopants of the same conductivity type into a semiconductor body. Gate electrodes (74 or 94) are defined such that each body-material dopant reaches a maximum concentration below the channel surface depletion regions, below all gate-electrode material overlying the channel zones (64 or 84), and at a different depth than each other body-material dopant. The transistors are provided with source/drain zones (60 or 80) of opposite conductivity type to, and with halo pocket portions of the same conductivity type as, the body-material dopants. One pocket portion (100/102 or 104) extends along both source/drain zones of one of the transistors. Another pocket portion (244 or 246) extends largely along only one of the source/drain zones of the other transistor so that it is asymmetrical.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: September 29, 2009
    Assignee: National Semiconductor Corporation
    Inventors: Constantin Bulucea, Fu-Cheng Wang, Prasad Chaparala
  • Patent number: 7592230
    Abstract: Means and methods are provided for trench TMOS devices (41-10, 11, 12), comprising, providing a first semiconductor (53, 53?) of a first composition having an upper surface (541), with a body portion (54) proximate the upper surface (541), a drift portion (46, 83) spaced apart from the upper surface (541) and a trench (49, 49?) having sidewalls (493) extending from the upper surface (541) into the drift portion (46, 83). A second semiconductor (56) adapted to provide a higher mobility layer is applied on the trench sidewalls (493) where parts (78) of the body portion (54) are exposed. A dielectric (70) covers the higher mobility layer (56) and separates it from a control gate (72) in the trench (49, 49?). Source regions (68) formed in the body portion (54) proximate the upper surface (491) communicate with the higher mobility layer (56).
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: September 22, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Edouard D. de Frésart, Robert W. Baird
  • Patent number: 7557393
    Abstract: A Junction Field-Effect transistor with no surface contact for the back gate and twice as much transconductance in the channel and with a higher switching speed is achieved by intentionally shorting the channel-well PN junction with the gate region. This is achieved by intentionally etching away field oxide outside the active area at least in the gate region so as to expose the sidewalls of the active area down to the channel-well PN junction or a buried gate which is in electrical contact with the well. Polysilicon is then deposited in the trench and doped heavily and an anneal step is used to drive impurities into the top and sidewalls of the channel region thereby creating a “wrap-around” gate region which reaches down the sidewalls of the channel region to the channel-well PN junction.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: July 7, 2009
    Assignee: DSM Solutions, Inc.
    Inventor: Madhukar B. Vora
  • Patent number: 7550760
    Abstract: An electronic device comprises a semiconductive material containing a homopolyacene of Formula (I): wherein R is a suitable hydrocarbon, a halogen, or a heteroatom containing group; each R? and R? are independently a suitable hydrocarbon, a heteroatom containing group, or a halogen; a represents a number of benzene rings on a left side of the central benzene ring; b represents a number of benzene rings on a right side of the central benzene ring; x represents a total number of R? groups on the left side of the central benzene ring; y represents a total number of R? groups on the right side of the central benzene ring; and n represents the number of repeating units and is from 2 to about 5,000.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: June 23, 2009
    Assignee: Xerox Corporation
    Inventors: Yuning Li, Ping Liu, Yiliang Wu, Beng S. Ong
  • Patent number: 7545027
    Abstract: A wafer level package may include a semiconductor substrate supporting an electrode pad. A first insulating layer may be provided on the semiconductor substrate. The first insulating layer may include a first opening through which the electrode pad may be exposed. A seed metal layer may be provided on an entire surface of the first insulating layer. A redistribution interconnection metal layer may be provided on the seed metal layer. A second insulating layer may be provided on the redistribution interconnection metal layer. The second insulating layer may have a second opening spaced from the first opening to expose a portion of the redistribution interconnection metal layer. The second insulating layer may surround the redistribution interconnection metal layer. An unwanted portion of seed metal layer may be removed using the second insulating layer as an etch mask.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: June 9, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Soo Chung, In-Young Lee, Dong-Hyeon Jang, Myeong-Soon Park, Dong-Ho Lee
  • Patent number: 7521746
    Abstract: A ferroelectric random access memory (FRAM) includes a semiconductor substrate and an interlayer insulating layer on the substrate. A diffusion preventive layer is on the interlayer insulating layer. The diffusion preventive layer and the interlayer insulating layer have two node contact holes formed therein. Node conductive layer patterns are aligned with the node contact holes, respectively, and are disposed so as to protrude upward from the diffusion preventive layer. Lower electrodes are disposed on the diffusion preventive layer that cover the node conductive layer patterns, respectively. Thicknesses of the lower electrodes are gradually reduced from a line extending from upper surfaces of the node conductive layer patterns toward the diffusion preventive layer.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: April 21, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Moon-Sook Lee
  • Patent number: 7514737
    Abstract: In a full CMOS SRAM having a lateral type cell (memory cell having three partitioned wells arranged side by side in a word line extending direction and longer in the word line direction than in the bit line direction) including first and second driver MOS transistors, first and second load MOS transistors and first and second access MOS transistors, two capacitors are arranged spaced apart from each other on embedded interconnections to be storage nodes, with lower and upper cell plates cross-coupled to each other.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: April 7, 2009
    Assignee: Renesas Technology Corp.
    Inventor: Takahiro Yokoyama
  • Patent number: 7508031
    Abstract: By forming MOSFETs on a substrate having pre-existing ridges of semiconductor material (i.e., a “corrugated substrate”), the resolution limitations associated with conventional semiconductor manufacturing processes can be overcome, and high-performance, low-power transistors can be reliably produced. Ridges on the corrugated substrate can be created using high precision techniques that are not ordinarily suitable for device production. MOSFETs that subsequently incorporate the high-precision ridges into their channel regions will typically exhibit much more precise and less variable performance than similar MOSFETs formed using optical lithography-based techniques that cannot provide the same degree of patterning accuracy.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: March 24, 2009
    Assignee: Synopsys, Inc.
    Inventors: Tsu Jae King Liu, Qiang Lu
  • Patent number: 7470587
    Abstract: A flash memory device includes trenches that are formed at regions on a semiconductor substrate spaced apart from one another at predetermined distances, buried floating gates buried into the trenches, a plurality of isolation structures formed between the buried floating gates, and a dielectric film and a control gate formed on the buried floating gates.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 30, 2008
    Assignee: Hynix Semiconductor Inc.
    Inventor: Ki Seog Kim
  • Patent number: 7456425
    Abstract: A light emitting device and electronic equipment having a long life at a low electric power consumption are provided. A hole transporting region composed of a hole transporting material, an electron transporting region composed of an electron transporting material, and a mixture region in which both the hole transporting material and the electron transporting material are mixed at a fixed ratio are formed within an organic compound film. Regions having a concentration gradient are formed between the mixture region and carrier transporting regions until the fixed ratio is achieved. In addition, by doping a light emitting material into the mixture region, functions of hole transportation, electron transportation, and light emission can be respectively expressed while all of the interfaces existing between layers of a conventional lamination structure are removed.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: November 25, 2008
    Inventors: Satoshi Seo, Shunpei Yamazaki
  • Patent number: 7449375
    Abstract: A semiconductor device includes second to fourth semiconductor layers, a gate electrode, and an insulating film. The second semiconductor layer is formed on a first semiconductor layer and has a projecting shape. The third and fourth semiconductor layers are formed on the first semiconductor layer to be in contact with the second semiconductor layer and oppose each other via the second semiconductor layer. The gate electrode is in contact with the second semiconductor layer with a gate insulating film interposed therebetween and forms a channel in the second semiconductor layer. The insulating film is formed in the first semiconductor layer located immediately under the third and fourth semiconductor layers.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 11, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mutsuo Morikado
  • Patent number: 7374953
    Abstract: A ferroelectric random access memory (FRAM) includes a semiconductor substrate and an interlayer insulating layer on the substrate. A diffusion preventive layer is on the interlayer insulating layer. The diffusion preventive layer and the interlayer insulating layer have two node contact holes formed therein. Node conductive layer patterns are aligned with the node contact holes, respectively, and are disposed so as to protrude upward from the diffusion preventive layer. Lower electrodes are disposed on the diffusion preventive layer that cover the node conductive layer patterns, respectively. Thicknesses of the lower electrodes are gradually reduced from a line extending from upper surfaces of the node conductive layer patterns toward the diffusion preventive layer.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: May 20, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Moon-Sook Lee