Patents Examined by H. Jey Tsai
  • Patent number: 7262091
    Abstract: Methods of fabricating MIM capacitors are provided. One example method includes forming an insulating layer including a void on a semiconductor substrate, forming a first hole connected to the void by patterning the insulating layer, forming a lower electrode by forming a tungsten layer filling in the first hole such that the tungsten flows into the void, forming a dielectric layer, forming a second hole penetrating the dielectric layer and protruding toward the insulating layer, forming a connecting contact connected to the lower electrode by filling in the second hole, and forming an upper electrode on the dielectric layer.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: August 28, 2007
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Yong-Wook Shin
  • Patent number: 7262101
    Abstract: A method of manufacturing a semiconductor integrated circuit device comprising forming a silicon oxide film as thin as 5 nm or less on the surfaces of p type wells and n type wells by wet oxidizing a substrate, heating the substrate in an atmosphere containing about 5% of an NO gas to introduce nitrogen into the silicon oxide film so as to form a silicon oxynitride film, exposing the substrate to a nitrogen plasma atmosphere to further introduce nitrogen into the silicon oxynitride film in order to form a silicon oxynitride gate insulating film having a first peak concentration near the interface with the substrate and a second peak concentration near the surface thereof. Thereby, the concentration of nitrogen in the gate insulating film is increased without raising the concentration of nitrogen near the interface between the substrate and the gate insulating film to a higher level than required.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: August 28, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Dai Ishikawa, Satoshi Sakai, Atsushi Hiraiwa
  • Patent number: 7262104
    Abstract: Multiple semiconductor devices are formed with different threshold voltages. According to one exemplary implementation, first and second semiconductor devices are formed and doped differently, resulting in different threshold voltages for the first and second semiconductor devices.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: August 28, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Haihong Wang, Shibly S. Ahmed, Bin Yu
  • Patent number: 7259023
    Abstract: A phase change memory may be formed to have a dimension that is sub-lithographic in one embodiment by forming a surface feature over the phase change material, and coating the surface feature with a mask of sub-lithographic dimensions. The horizontal portions of the mask and the surface feature may then be removed and the remaining portions of the mask may be used to define a dimension of said phase change material. Another dimension of the phase change material may be defined using an upper electrode extending over said phase change material as a mask to etch the phase change material.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: August 21, 2007
    Assignee: Intel Corporation
    Inventors: Charles C. Kuo, Ilya Karpov, Yudong Kim, Greg Atwood
  • Patent number: 7256445
    Abstract: An EEPROM memory cell uses an emitter polysilicon film for fabricating shallow source/drain regions to increase a breakdown voltage of the wells. The wells are fabricated to be approximately 100 nm (0.1 micrometers (?m)) in depth with a breakdown voltage of approximately 14 volts or more. A typical breakdown voltage of a well in a bipolar process is approximately 10 volts. Due to the increased breakdown voltage achieved, EEPROM memory cells can be produced along with bipolar devices on a single integrated circuit chip and fabricated on a common semiconductor fabrication line.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: August 14, 2007
    Assignee: Atmel Corporation
    Inventor: Muhammad I. Chaudhry
  • Patent number: 7256095
    Abstract: A method for fabricating metal-oxide-semiconductor devices is provided. The method includes forming a gate dielectric layer on a substrate; depositing a polysilicon layer on the gate dielectric layer; forming a resist mask on the polysilicon layer; etching the polysilicon layer not masked by the resist mask, thereby forming a gate electrode; etching a thickness of the gate dielectric layer not covered by the gate electrode; stripping the resist mask; forming a salicide block resist mask covering the gate electrode and a portions of the remaining gate dielectric layer; etching away the remaining gate dielectric layer not covered by the salicide block resist mask, thereby exposing the substrate and forming a salicide block lug portions on two opposite sides of the gate electrode; and making a metal layer react with the substrate, thereby forming a salicide layer that is kept a distance ā€œdā€ away from the gate electrode.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 14, 2007
    Assignee: United Microelectronics Corp.
    Inventors: Chien-Ming Lin, Ming-Tsung Tung, Chin-Hung Liu
  • Patent number: 7253094
    Abstract: A method for processing a semiconductor topography which includes removing metal oxide layers from the bottom of contact openings is provided. In some embodiments, the method may include etching openings within a dielectric layer to expose conductive and silicon surfaces within the semiconductor topography is provided. In such cases, the method further includes exposing the semiconductor topography to an etch process adapted to remove metal oxide material from the conductive surfaces without substantially removing material from the silicon surfaces. In some cases, the etch chemistry used for the etch process may include sulfuric acid. In addition or alternatively, the etch chemistry may include hydrogen peroxide. In any case, the etch chemistry may be distinct from chemistries used to remove residual matter generated from the etch process used to form the openings within the dielectric and/or the removal of the masking layer used to pattern the openings.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: August 7, 2007
    Assignee: Cypress Semiconductor Corp.
    Inventors: Jie Zhang, Vinay Krishna, Chan-Lon Yang
  • Patent number: 7253009
    Abstract: An integrated circuit arrangement includes at least one electrical conductor that, when a current flows through it, produces a magnetic field that acts on at least a further part of the circuit arrangement, wherein seen in cross section, the electrical conductor has at least one recess or depression, or a region of reduced conductivity on the side facing that part, in order to influence the magnetic field which can be produced.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: August 7, 2007
    Assignee: Infineon Technologies AG
    Inventor: Joachim Bangert
  • Patent number: 7250352
    Abstract: In preferred embodiments, a method of manufacturing a hybrid integrated circuit device is provided, in which a plurality of circuit substrates 10 are manufactured from a single metal substrate 10A? by dicing. In some embodiments, the method includes: preparing a metal substrate 10A? having an insulating layer 11 formed on the top surface thereof; forming a plurality of conductive patterns 12 on the top surface of insulating layer 11; forming grooves 20 in lattice form on the rear surface of metal substrate 10B?; mounting hybrid integrated circuits onto conductive patterns 12; and separating individual circuit substrates 10 with, for example, a rotatable cutter.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: July 31, 2007
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masahiko Mizutani, Sadamichi Takakusaki, Motoichi Nezu, Kazutoshi Motegi, Mitsuru Noguchi
  • Patent number: 7247506
    Abstract: There is provided a magnetic memory device which has a small switching current for a writing line and which has a small variation therein. A method for producing such a magnetic memory device includes: forming a magnetoresistive effect element; forming a first insulating film so as to cover the magnetoresistive effect element; forming a coating film so as to cover the first insulating film; exposing a top face of the magnetoresistive effect element; forming an upper writing line on the magnetoresistive effect element; exposing the first insulating film on a side portion of the magnetoresistive effect element by removing a part or all of the coating film; and forming a yoke structural member so as to cover at least a side portion of the upper writing line and so as to contact the exposed first insulating film on the side portion of the magnetoresistive effect element.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: July 24, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Minoru Amano, Tatsuya Kishi, Yoshiaki Saito, Tomomasa Ueda, Hiroaki Yoda
  • Patent number: 7247537
    Abstract: In a semiconductor device according to embodiments of the invention, a capacitor includes a storage electrode having a cylindrical storage conductive layer pattern and connecting members formed on the upper portion of the cylindrical storage conductive layer pattern. The connecting member connects to an adjacent connecting member of another storage electrode. A dielectric layer and a plate electrode are successively formed on the storage electrode. All of the capacitors are connected by one another by forming cylindrical storage electrodes so that the storage electrode does not fall down when the capacitors have an extremely large aspect ratio. Thus, the capacitance of the capacitors may be improved to the desired level. A semiconductor device that includes these capacitors may have improved reliability and the throughput of a semiconductor manufacturing process may be increased.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: July 24, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Je-Min Park
  • Patent number: 7241663
    Abstract: The present invention facilitates semiconductor fabrication of semiconductor devices having polysilicon resistors. An oxide layer is formed over a semiconductor device (104). A polysilicon layer is formed on the oxide layer (106). The polysilicon layer is patterned to form a polysilicon resistor (108). A poly resistor mask having a selected percentage of the poly resistor exposed is formed on the poly resistor (110). A selected dopant is implanted (112), which modifies the resistivity of the poly resistor. The mask is removed (114) and a thermal activation process is performed (116) that diffuses the implanted dopant to a substantially uniform concentration throughout the polysilicon resistor.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: July 10, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Gregory Eric Howard, Leland Swanson
  • Patent number: 7241665
    Abstract: A method for forming an isolation structure on a semiconductor substrate includes opening a portion of a pad oxide layer overlying the substrate using a process gas including an etchant gas and a polymer-forming gas. A portion of the substrate exposed by the opening step is etched to form a trench having a first slope and a second slope. The first slope is greater than 45 degrees, and the second slope is less than 45 degrees. The trench is filled to form the isolation structure.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: July 10, 2007
    Assignee: SilTerra Malaysia Sdn. Bhd.
    Inventors: Inki Kim, Sang Yeon Kim, Min Paek, Ch'ng Toh Ghee, Ramakrishnan Rajagopal, Chiew Sin Ping, Wan Gie Lee, Choong Shiau Chien, Charlie Tay, Chang Gi Lee, Hitomi Watanabe, Naoto Inoue
  • Patent number: 7235488
    Abstract: Chemical-mechanical planarization (CMP) apparatus and methods for detecting polishing pad properties using ultrasonic imaging is presented. An ultrasonic probe assembly transmits ultrasonic signals onto the surface of a polishing pad during a CMP process. Reflected ultrasonic signals are collected and analyzed to monitor polishing pad properties in real-time. This allows CMP process adjustments to be made during the CMP process.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: June 26, 2007
    Assignee: Micron Technology, Inc.
    Inventor: Jason B Elledge
  • Patent number: 7235407
    Abstract: A multi-layer PrxCa1-xMnO3 (PCMO) thin film capacitor and associated deposition method are provided for forming a bipolar switching thin film. The method comprises: forming a bottom electrode; depositing a nanocrystalline PCMO layer; depositing a polycrystalline PCMO layer; forming a multi-layer PCMO film with bipolar switching properties; and, forming top electrode overlying the PCMO film. If the polycrystalline layers are deposited overlying the nanocrystalline layers, a high resistance can be written with narrow pulse width, negative voltage pulses. The PCMO film can be reset to a low resistance using a narrow pulse width, positive amplitude pulse. Likewise, if the nanocrystalline layers are deposited overlying the polycrystalline layers, a high resistance can be written with narrow pulse width, positive voltage pulses, and reset to a low resistance using a narrow pulse width, negative amplitude pulse.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: June 26, 2007
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Tingkai Li, Lawrence J. Charneski, Wei-Wei Zhuang, David R. Evans, Sheng Teng Hsu
  • Patent number: 7232469
    Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan ?, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 19, 2007
    Assignee: Showa Denko K.K.
    Inventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
  • Patent number: 7230264
    Abstract: A transistor is formed using a semiconductor substrate and forming a control electrode overlying the semiconductor substrate. A first current electrode is formed within the semiconductor substrate and adjacent the control electrode. The first current electrode has a first predetermined semiconductor material. A second current electrode is formed within the semiconductor substrate and adjacent the control electrode to form a channel within the semiconductor substrate. The second current electrode has a second predetermined semiconductor material that is different from the first predetermined semiconductor material. The first predetermined semiconductor material is chosen to optimize bandgap energy of the first current electrode, and the second predetermined semiconductor material is chosen to optimize strain of the channel.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: June 12, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Voon-Yew Thean, Dina H. Triyoso, Bich-Yen Nguyen
  • Patent number: 7227171
    Abstract: A contact structure, including a first conducting region having a first thin portion with a first sublithographic dimension in a first direction; a second conducting region having a second thin portion with a second sublithographic dimension in a second direction transverse to said first direction; the first and second thin portions being in direct electrical contact and defining a contact area having a sublithographic extension. The thin portions are obtained using deposition instead of lithography: the first thin portion is deposed on a wall of an opening in a first dielectric layer; the second thin portion is obtained by deposing a sacrificial region on vertical wall of a first delimitation layer, deposing a second delimitation layer on the free side of the sacrificial region, removing the sacrificial region to form a sublithographic opening that is used to etch a mold opening in a mold layer and filling the mold opening.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: June 5, 2007
    Assignees: STMicroelectronics S.r.l., Ovonyx, Inc.
    Inventors: Roberto Bez, Fabio Pellizzer, Caterina Riva, Romina Zonca
  • Patent number: 7223689
    Abstract: A metal contact in a semiconductor device is formed by forming an insulating layer having a contact hole therein on a silicon substrate. A cobalt layer is formed on a bottom and inner walls of the contact hole. A cobalt silicide layer is formed at the bottom of the contact hole while forming a titanium layer on the cobalt layer. A plug is formed on the titanium layer so as to fill the contact hole.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: May 29, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-sook Park, Gil-heyun Choi, Sang-bum Kang, Seong-geon Park, Kwang-jin Moon
  • Patent number: 7223687
    Abstract: A method of fabricating a printed wiring board comprising the following steps is provided. A portion of each of two dielectric layers or metal layers bonds to both sides of a carrier plate, respectively. Two build-up wiring structures are respectively formed on the dielectric layers or the metal layers by a build-up process. The portions of the dielectric layers or metal layers bonded to the carrier plate are removed such that the dielectric layers or metal layers and the build-up wiring structures formed thereon are released from the carrier plate to form two printed wiring boards.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: May 29, 2007
    Assignee: Subtron Technology Co., Ltd.
    Inventors: Chung W. Ho, Shih-Lian Cheng, Leo Shen