Patents Examined by Pho Luu
  • Patent number: 6617193
    Abstract: A semiconductor device comprising a substrate with a cavity portion for mounting a semiconductor chip is provided to achieve a high reliability and to decrease a size and a fabricating cost. The cavity portion for mounting the semiconductor chip at the center portion of the substrate is formed by press forming with a projected portion of a die while adhering a press shapeable wiring body comprising a copper wiring which becomes wiring material, a barrier layer such as nickel alloy or the like, and a copper foil which is a carrier layer, to a resin substrate, so as to have wiring buried into a surface of the substrate and to form a ramp between an inner connection terminal portion connecting to the semiconductor chip and an external connection terminal portion connecting to an external connection terminals, the internal and external connection terminal portions being two end portions of the wiring.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: September 9, 2003
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yamazaki Toshio, Fukutomi Naoki, Suzuki Kazuhisa, Morita Hiroshi, Wakashima Yoshiaki, Naoyuki Susumu, Kida Akinari
  • Patent number: 6602742
    Abstract: An electric double layer capacitor including at least one pair of polarizable electrodes connected to current collectors, a separator made of ion-permeable but electron-insulating material interposed between the electrodes in each pair of electrodes, and a liquid electrolyte. According to the invention the electrodes include a layer of carbon particles having a narrow distribution of nanopores therein, the pore sizes of the nanopores being adapted to fit the ion sizes of the electrolyte. The invention also relates to a method of manufacturing such a supercapacitor.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: August 5, 2003
    Assignee: FOC Frankenburg Oil Company Est.
    Inventors: Yurii Maletin, Natalie Strizhakova, Sergey Kozachkov, Antonina Mironova, Sergey Podmogilny, Valerii Danilin, Julia Kolotilova, Volodymyz Izotov, Jan Cederström, Sergey Gordeev Konstantinovich, Julia Kukushkina Aleksandrovna, Vasilii Sokolov Vasilevitj, Alexander Kravehik Efimovitj, Anti Perkson, Mati Arulepp, Jaan Leis, Clarence L. Wallace, Jie Zheng
  • Patent number: 6566282
    Abstract: A silicon oxide layer is formed on a semiconductor wafer by performing a high temperature oxidation (HTO) process using dichlorosilane (SiH2Cl2) and nitrous oxide (N2O), as reacting gases, having a flow rates with a ratio greater than 2:1, respectively. The reacting moles of dichlorosilane to nitrous oxide are in the proportion of 1:2.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: May 20, 2003
    Assignee: United Microelectronics Corp.
    Inventors: Cheng-Chieh Huang, Tse-Wei Liu, Tang Yu
  • Patent number: 6548324
    Abstract: Edges of a slit and cut to length foil having a dielectric oxide film on at least one surface are edge formed by edge forming the foil in an aqueous citrate electrolyte, preferably an aqueous ammonium citrate electrolyte, depolarizing the foil, and then edge forming the foil in an aqueous phosphate electrolyte, preferably an ammonium dihydrogen phosphate electrolyte. Using this formation process, a foil with excellent hydration resistance and capacitance is produced.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: April 15, 2003
    Assignee: Kemet Electronics Corporation
    Inventors: Philip Michael Lessner, Albert Kennedy Harrington, Brian John Melody, John Tony Kinard
  • Patent number: 6544850
    Abstract: A dynamic random access memory (DRAM) formed in a silicon chip that includes a support area in which support circuitry of the memory includes a single electrical contact through two dielectric layers to a conductive layer of a gate stack of a field effect support transistor that has a capping layer through which the electrical contact passes to the gate. The DRAM also includes a memory area containing an array of memory cells each include a field effect transistor. Drain regions of the transistors of the memory cells and drain and source regions of field effect transistors of the support transistors have first electrical contacts thereto through the first dielectric layer and have second electrical contacts which pass through the second dielectric layer and electrical contact to the first electrical contacts. Forming of the second electrical contacts concurrently with the single electrical contact to the gate of the support transistor saves a processing step over prior art processes.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: April 8, 2003
    Assignee: Infineon Technologies AG
    Inventors: Ranier Florian Schnabel, Ulrike Gruening
  • Patent number: 6541330
    Abstract: Disclosed are a capacitor for semiconductor device capable of increasing storage capacitance and preventing leakage current, and method of manufacturing the same. According to the present invention. A lower electrode is formed on a semiconductor substrate. The lower electrode is surface-treated so as to prevent generation of a natural oxide layer. An amorphous TaON layer is, as a dielectric layer, deposited on the upper part of the lower electrode. Afterwards, the amorphous TaON layer is thermal-treated in a range of maintaining its amorphous state. Next, an upper electrode is formed on the upper part of the TaON layer.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: April 1, 2003
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Kee Jeung Lee, Tae Hyeok Lee
  • Patent number: 6479329
    Abstract: In producing a thin film transistor, after an amorphous silicon film is formed on a substrate, a nickel silicide layer is formed by spin coating with a solution (nickel acetate solution) containing nickel as the metal element which accelerates (promotes) the crystallization of silicon and by heat treating. The nickel silicide layer is selectively patterned to form island-like nickel silicide layer. The amorphous silicon film is patterned. A laser light is irradiated while moving the laser, so that crystal growth occurs from the region in which the nickel silicide layer is formed and a region equivalent to a single crystal (a monodomain region) is obtained.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: November 12, 2002
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Setsuo Nakajima, Shunpei Yamazaki, Naoto Kusumoto, Satoshi Teramoto
  • Patent number: 6429063
    Abstract: A method of creating a nitride, programmable read only memory (NROM) cell includes the step of decoupling injection of channel hot electrons into a charge trapping layer of the NROM cell from injection of non-channel electrons into the charge trapping layer. The step of decoupling can include the step of minimizing the injection of the non-channel electrons into the charge trapping layer. Alternatively, it includes the step of minimizing the generation of the non-channel electrons. The present invention includes cells which have minimal injection of non-channel electrons therein.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: August 6, 2002
    Assignee: Saifun Semiconductors Ltd.
    Inventor: Boaz Eitan
  • Patent number: 6429069
    Abstract: A method of fabricating a memory cell is described in which an access transistor is first formed on an SOI substrate. The access transistor contains source and drain regions in a semiconductor material layer of the substrate and at least one gate stack which includes a gate region electrically connected with a word line. At least one capacitor is formed on a first side of the substrate and is electrically connected to one of the source and drain regions. At least one bit line conductor is formed on the reverse or flip side of the substrate, wherein the bit line conductor is electrically connected to the other of the source and drain regions. Self-aligned contact openings are formed through insulative material over the substrate to provide vias for the electrical connections for each of the capacitor and bit line conductor. These contact openings and the deposited contact material are substantially preserved throughout the entire fabrication process.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: August 6, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Charles H. Dennison, John K. Zahurak
  • Patent number: 6426238
    Abstract: A charge transfer device is provided, capable of preventing degradation of the charge transfer efficiency when the channel width becomes narrower due to the narrow channel effect. The charge transfer device of the present invention is obtained by forming a charge transfer electric field in a channel below a boundary portion between a terminal storage electrode and a terminal barrier electrode, which constitute a pair of charge transfer electrodes located closest to the output electrode, to be higher than a charge transfer electric field in a channel below a boundary portions of pairs of storage electrodes and barrier electrodes, which constitute pairs of storage electrodes and barrier electrodes other than the pair of the terminal electrodes.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: July 30, 2002
    Assignee: NEC Corporation
    Inventor: Michihiro Morimoto
  • Patent number: 6423621
    Abstract: An ovonic phase-change semiconductor memory device having a reduced area of contact between electrodes of chalcogenide memories, and methods of forming the same. Such memory devices are formed by forming a tip protruding from a lower surface of a lower electrode element An insulative material is applied over the lower electrode such that an upper surface of the tip is exposed. A chalcogenide material and an upper electrode are either formed atop the tip, or the tip is etched into the insulative material and the chalcogenide material and upper electrode are deposited within the recess. This allows the memory cells to be made smaller and allows the overall power requirements for the memory cell to be minimized.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: July 23, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Trung T. Doan, D. Mark Durcan, Brent D. Gilgen
  • Patent number: 6423570
    Abstract: A microelectronic package including a microelectronic die having an active surface and at least one side. An encapsulation material is disposed adjacent the microelectronic die side(s). A portion of the encapsulation material is removed to expose a back surface of the microelectronic die which has a metallization layer disposed thereon. A protective layer is disposed on the metallization layer prior to encapsulation, such that when the portion of the encapsulation material is removed, the protective layer prevents the metallization layer from being damaged. After the portion of the encapsulation material is removed, the protective layer is removed and the metallization layer is exposed. A heat spreader may then be attached to the microelectronic die by abutting the heat spreader against the metallization layer and reflowing the metallization layer.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: July 23, 2002
    Assignee: Intel Corporation
    Inventors: Qing Ma, Xiao-Chun Mu, Quat T. Vu
  • Patent number: 6420220
    Abstract: A method is provided for fabricating a semiconductor device, the method including forming a dielectric layer above a structure, forming a silicidable layer above the dielectric layer and forming a conductive layer above the silicidable layer. The method also includes forming a silicided layer by siliciding a portion of the conductive layer using at least a portion of the silicidable layer and forming a gate conductor having sides by patterning the silicided layer and the conductive layer.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: July 16, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Mark I. Gardner, H. Jim Fulford, Charles E. May
  • Patent number: 6420218
    Abstract: An ultra-large-scale integrated (ULSI) circuit includes MOSFETs on an SOI substrate. The MOSFETs include recessed source and drain regions. The recessed source and drain regions are formed utilizing an amorphous semiconductor layer. The recessed source and drain regions allow sufficient material for silicidation and yet allow an ultra thin channel region to be utilized. The channel region is above an insulative island.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: July 16, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Bin Yu
  • Patent number: 6410370
    Abstract: A semiconductor device comprises a substrate such as a semiconductor wafer having a major surface, a first conductive layer formed over the major surface, and a second conductive layer formed over the first conductive layer with the first and second conductive layers having a capacitance therebetween. A semiconductor layer is formed over the first and second conductive layer, the semiconductor layer having a diffusion region such as a transistor source, drain, and/or channel. An inventive method for forming the inventive structure comprises the steps of forming a first conductive layer over a substrate and forming a second conductive layer over the first conductive layer. Next, a semiconductor layer is formed over the second conductive layer and a transistor diffusion region, such as a source, drain, and/or channel is formed in the semiconductor layer.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: June 25, 2002
    Assignee: Micron Technology, Inc.
    Inventor: Anthony Grass
  • Patent number: 6406934
    Abstract: The invention provides a manufacturing process for making chip-size semi-conductor packages (“CSPs”) at the wafer-level without the added size, cost, and complexity of substrates in the packages or the need to overmold them with plastic. One embodiment of the method includes the provision of a semiconductor wafer with opposite top and bottom surfaces and a plurality of dies integrally defined therein. Each die has an electronic device formed in a top surface thereof, and one or more electrically conductive vias extending therethrough that electrically connect the electronic device to the bottom surface of the die. The openings for the vias are formed ablatively with a laser and plated through with a conductive material. In a BGA form of the CSP, the vias connects the electronic device to lands on the bottom surface of the die. The lands may each have a bump of a conductive metal, e.g., solder, attached to it that functions as an input-output terminal of the CSP.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: June 18, 2002
    Assignee: Amkor Technology, Inc.
    Inventors: Thomas P. Glenn, Steven Webster, Vincent DiCaprio
  • Patent number: 6403411
    Abstract: A method for manufacturing the lower electrode of a DRAM capacitor. The method includes depositing polysilicon instead of amorphous silicon to form the lower electrode. Because polysilicon has a higher depositing temperature, it has a higher depositing rate capable of shortening depositing time. After forming the polysilicon lower electrode, the upper portion of the polysilicon layer is transformed into an amorphous layer by bombarding the polysilicon layer with ions to damage its internal structure. Eventually, hemispherical grain silicon is able to grow over the lower electrode, thereby increasing its surface area.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: June 11, 2002
    Assignee: United Microelectronics Corp.
    Inventors: Chih-Hsun Chu, Horng-Nan Chern, Kevin Lin, Kuo-Tai Huang, Wen-Yi Hsieh, Tri-Rung Yew
  • Patent number: 6399457
    Abstract: A semiconductor device having a capacitor. The capacitor includes a first electrode, a dielectric layer formed of a metal oxide layer including a Ta2O5 layer, and a second electrode composed of first and second metal nitride layers sequentially stacked. Each of the first and second metal nitride layers has a TiN layer and a WN layer. The second electrode of the capacitor is a double-layered structure having the first and second metal nitride layers, and thus annealing after forming the second electrode is performed at 750° C. or less, to thereby reduce an equivalent oxide thickness of the dielectric layer.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: June 4, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-lyul Park, Myoung-bum Lee, Hyeon-deok Lee
  • Patent number: 6399410
    Abstract: A method for anodizing silicon substrate includes forming an n-type silicon embedded layer (21) made of n-type silicon on a predetermined area of a first surface of the p-type single crystal silicon substrate (2). N-type silicon layers (4, 6) are formed on the upper surface of the p-type single crystal silicon substrate (2) and on the n-type silicon embedded layer (21). Silicon diffusion layers (5, 7) containing high-concentration p-type impurities are formed on predetermined areas of the n-type silicon layers (4, 6) to contact the n-type silicon embedded layer (21). An electrode layer (13) is formed on the lower surface of the p-type silicon substrate (2). The anode of a DC power source (15) is connected to the electrode layer (13), and the cathode is connected to a counter electrode (23), which is opposed to the p-type silicon substrate (2).
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Hitoshi Iwata, Makoto Murate
  • Patent number: 6395595
    Abstract: An improved and novel multi-layer thin film device including a graded-stoichiometry insulating layer (16) and a method of fabricating a multi-layer thin film device including a graded-stoichiometry insulating layer (16). The device structure includes a substrate (12), a first electrode (14), a second electrode (18), and a graded-stoichiometry insulating, or tunnel-barrier, layer (16) formed between the first electrode (14) and the second electrode (18). The graded-stoichiometry insulating tunnel-barrier layer (16) includes graded stoichiometry to compensate for thickness profile and thereby produce a uniform tunnel-barrier resistance across the structure (10).
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: May 28, 2002
    Assignee: Motorola, Inc.
    Inventor: Jon Slaughter