Patents Issued in September 7, 2004
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Patent number: 6787828Abstract: The invention provides a method of manufacturing an optical-gate transistor. A BP buffer layer is formed on a silicone substrate first, and a first AIN layer is then formed for offsetting strain in the layers deposited on the first AIN layer. Subsequently, a GaN layer and an n-type AIN layer are successively deposited to form a hetero-junction at the interface. A selective epitaxy or anisotropic etching of a GaN-group material is conducted to form a prism-shaped, light-receiving layer with a cubic lattice. The prism-shaped, light-receiving layer focuses incident light to induce electrons in the n-type AIN layer, which then form a high-speed 2DEG in the GaN layer, thereby increasing the power and sensitivity of the transistor being controlled by illumination.Type: GrantFiled: August 7, 2003Date of Patent: September 7, 2004Assignee: Vtera Technology Inc.Inventors: Terashima Kazutaka, Shun-Hung Hsu, Chiung-Yu Chang, Mu-Jen Lai
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Patent number: 6787829Abstract: A liquid crystal display panel of the invention is such that, in a pixel region defined by a region of the array substrate surrounded by a pair of image signal lines and a pair of scanning signal lines, of a line-shaped pixel electrode and a common electrode, the electrode that is disposed adjacent to and parallel to a signal line is made of an opaque conductor and at least one of the other electrodes is made of a transparent conductor. Adverse effects of the electric field formed between a signal line and an adjacent electrode thereto are suppressed and a sufficient aperture ratio is ensured by using a transparent conductor for the electrode contributing good display.Type: GrantFiled: December 5, 2001Date of Patent: September 7, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tetsuo Fukami, Katsuhiko Kumagawa, Hiroyuki Yamakita, Masanori Kimura, Michiko Okafuji, Satoshi Asada
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Patent number: 6787830Abstract: A gate electrode and a gate insulating film are formed for each of PMOSFET, NMOSFET and ferroelectric FET. Source/drain regions are defined for the NMOSFET and ferroelectric FET and for the PMOSFET by performing ion implantation processes twice separately. An intermediate electrode connected to the gate electrode of the ferroelectric FET, a ferroelectric film and a control gate electrode are formed over a first interlevel dielectric film. An interconnect layer, which includes first and second interconnects and is connected to the gate electrodes of the CMOS device, is formed on a second interlevel dielectric film. The first and second interconnects are connected to the control gate and intermediate electrodes of the ferroelectric FET, respectively.Type: GrantFiled: March 13, 2001Date of Patent: September 7, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiro Shimada, Yoshihisa Kato
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Patent number: 6787831Abstract: An barrier stack for inhibiting diffusion of atoms or molecules, such as O2 is disclosed. The barrier slack includes first and second barrier layers formed from, for example, Ir, Ru, Pd, Rh, or alloys thereof. The first barrier layer is passivated with O2 using, for example, a rapid thermal oxidation (RTO) prior to formation of the second barrier layer. The RTO forms a thin oxide layer on the surface of the first barrier layer. The thin oxide layer passivates the grain boundaries of the first barrier layer as well as promoting mismatching of the grain boundaries of the first and second barrier layer.Type: GrantFiled: January 15, 2002Date of Patent: September 7, 2004Assignees: Infineon Technologies Aktiengesellschaft, Kabushiki Kaisha ToshibaInventors: Bum Ki Moon, Gerhard Adolf Beitel, Nicolas Nagel, Andreas Hilliger, Koji Yamakawa, Keitaro Imai
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Patent number: 6787832Abstract: A semiconductor memory cell has a field-effect transistor device and a ferroelectric storage capacitor. The field-effect transistor device has a channel region that includes or is made of an organic semiconductor material. Besides a first gate electrode of the gate electrode configuration of the field-effect transistor device, an additional selection gate electrode is provided, by way of which the field-effect transistor device can be switched off without influencing the storage dielectric and independently of the first gate electrode.Type: GrantFiled: March 24, 2003Date of Patent: September 7, 2004Assignee: Infineon Technologies AGInventors: Günter Schmid, Marcus Halik, Hagen Klauk, Christine Dehm, Thomas Haneder, Thomas Mikolajick
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Patent number: 6787833Abstract: This invention relates to contact structures for use in integrated circuits and methods of fabricating contact structures. In one embodiment, a contact structure includes a conductive layer, one or more barrier layers formed above the conductive layer, and a barrier structure encircling the polysilicon layer and the one or more barrier layers. In an alternate embodiment, a contact structure is fabricated by forming a polysilicon layer on a substrate, forming a tungsten nitride layer above the polysilicon layer, and etching the polysilicon layer and the tungsten nitride layer to a level below the surface of a substrate structure. A silicon nitride layer is formed above the tungsten nitride layer, and a ruthenium silicide layer is formed above the silicon nitride layer. The ruthenium silicide layer is then polished.Type: GrantFiled: August 31, 2000Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventor: Fred Fishburn
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Patent number: 6787834Abstract: A method of providing even nucleation between silicon and oxide surfaces for growing uniformly thin silicon nitride layers used in semiconductor devices. First, a nonconductive nitride-nucleation enhancing monolayer is formed over a semiconductor assembly having both nitridation receptive and resistive materials. For purposes of the present invention, a nitride-nucleation enhancing monolayer is a material that will readily accept the bonding of nitrogen atoms to the material itself. Next, a silicon nitride layer is formed over the nonconductive nitride-nucleation enhancing monolayer. The nonconductive nitride-nucleation enhancing monolayer provides even nucleation over both the nitridation receptive material and the nitridation resistive material for silicon nitride, thereby allowing for the growth of a uniformly thin nitride layer.Type: GrantFiled: May 7, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventor: Er-Xuan Ping
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Patent number: 6787835Abstract: A high integration dynamic random access memory is provided by this invention. Furthermore, a write method is provided such that the cell size of two- and three-transistor gain cell memories is reduced. A dynamic memory incorporating a thin-channel transistor as the write element such that long data storage retention is achieved in the memory devices of this invention. A dynamic memory cell having low operating power and high density is also realized by this invention.Type: GrantFiled: June 11, 2002Date of Patent: September 7, 2004Assignee: Hitachi, Ltd.Inventors: Bryan Atwood, Kazuo Yano, Tomoyuki Ishii, Taro Osabe, Kazumasa Yanagisawa, Takeshi Sakata
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Patent number: 6787836Abstract: An integrated circuit structure is disclosed that comprises a pair of capacitors, each having metal plates separated by an insulator, and metal gate semiconductor transistors electrically connected to the capacitors. The metal gate of the transistors and one of the metal plates of each of the capacitors comprise the same metal level in the integrated circuit structure. More specifically, each of the capacitors comprise a vertical capacitor having an upper metal plate vertically over a lower metal plate and each metal gate of the transistors and each upper metal plate of the capacitors comprise the same metal level in the integrated circuit structure.Type: GrantFiled: August 21, 2002Date of Patent: September 7, 2004Assignee: International Business Machines CorporationInventors: Lawrence A. Clevenger, Louis L. Hsu, Kwong Hon Wong
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Patent number: 6787837Abstract: A semiconductor memory device includes first and second semiconductor layers, a buried insulating layer, a trench comprising a retreated portion, and the trench defining a first opening width at the second semiconductor layer, a first capacitor electrode formed in the first semiconductor layer, a capacitor insulating film formed in the trench, a second capacitor electrode formed in the trench in the first semiconductor layer, an insulating film formed on a side surface of the retreated portion and defining second and third opening widths, the second opening width serving as a width at the buried insulating layer and being not more than the first opening width, and the third opening width serving as a width at a boundary portion between the buried insulating layer and first semiconductor layer, and a connection portion electrically connected to the second capacitor electrode.Type: GrantFiled: June 25, 2002Date of Patent: September 7, 2004Assignee: Kabushiki Kaisha ToshibaInventor: Yoshinori Matsubara
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Patent number: 6787838Abstract: A trench capacitor DRAM cell in an SOI wafer uses the silicon device layer in the array as part of passing wordlines, stripping the silicon device layer in the array outside the wordlines and uses the BOX layer as the array top oxide separating the passing wordlines from the substrate.Type: GrantFiled: June 18, 2003Date of Patent: September 7, 2004Assignee: International Business Machines CorporationInventors: Dureseti Chidambarrao, Ramachandra Divakaruni, Deok-kee Kim
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Patent number: 6787839Abstract: The present invention is directed to fabrication of a capacitor formed with a substantially concave shape and having optional folded or convoluted surfaces. The concave shape optimizes surface area within a small volume and thereby enables the capacitor to hold a significant charge so as to assist in increased miniaturization efforts in the microelectronic field. The capacitor is fabricated in microelectronic fashion consistent with a dense DRAM array. Methods of fabrication include stack building with storage nodes that extend above a semiconductor substrate surface.Type: GrantFiled: May 14, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Zhiqiang Wu, Kunal Parekh, Li Li
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Patent number: 6787840Abstract: A semiconductor chip having a plurality of flash memory devices, shallow trench isolation in the periphery region, and LOCOS isolation in the core region. A hard mask is used first to create the shallow trench isolation. The LOCOS isolation is then created. Subsequent etching is used to remove stringers. The flash memory is able to use shallow trench isolation to limit encroachment. The flash memory may also have a nitridated tunnel oxide barrier layer. A hard mask is used to prevent nitride contamination of the gate oxide layer. Periphery stacks have hate oxide layers of different thicknesses.Type: GrantFiled: January 27, 2000Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Tuan Duc Pham, Mark T. Ramsbey, Yu Sun, Chi Chang
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Patent number: 6787841Abstract: A field-effect semiconductor element implemented with a fewer number of elements and a reduced area and capable of storing data by itself without need for cooling at a cryogenic temperature, and a memory device employing the same. Gate-channel capacitance is set so small that whether or not a trap captures one electron or hole can definitely and distinctively be detected in terms of changes of a current of the semiconductor FET element. By detecting a change in a threshold voltage of the semiconductor element brought about by trapping of electron or hole in the trap, data storage can be realized at a room temperature.Type: GrantFiled: August 29, 2003Date of Patent: September 7, 2004Assignee: Hitachi, Ltd.Inventors: Kazuo Yano, Tomoyuki Ishii, Takashi Hashimoto, Koichi Seki, Masakazu Aoki, Takeshi Sakata, Yoshinobu Nakagome, Kan Takeuchi
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Patent number: 6787842Abstract: Within a stacked gate field effect transistor (FET) device, as well as a method for fabrication thereof and a method for operation thereof, there is provided a stacked gate field effect transistor (FET) device comprising a layered stack of a tunneling dielectric layer, a floating gate electrode, an inter-gate electrode dielectric layer and a control gate electrode formed upon a semiconductor substrate. To enhance performance of the stacked gate field effect transistor (FET) device, at least one of: (1) the floating gate electrode is formed with a pointed edge tip at its outer sidewall; (2) the floating gate electrode in formed with a pointed linear recess centered within its linewidth; and (3) a pair of source/drain regions is formed asymmetrically penetrating beneath the pair of opposite edges of the floating gate electrode and not laterally spaced from a floating gate electrode sidewall.Type: GrantFiled: April 2, 2003Date of Patent: September 7, 2004Assignee: Taiwan SEmiconductor Manufacturing Co., LtdInventor: Chia-Ta Hsieh
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Patent number: 6787843Abstract: A nonvolatile semiconductor memory cell, an associated semiconductor circuit configuration and also a fabrication method, in which, in a substrate, active regions are formed with a first insulating layer situated above them, a charge-storing layer, a second insulating layer and a control layer. In order to realize a particularly small cell area, in a third insulating layer situated thereabove, openings are formed above at least partial regions of source/drain regions, which are each directly contact-connected via the openings by source and drain lines formed on an insulating web.Type: GrantFiled: June 16, 2003Date of Patent: September 7, 2004Assignee: Infineon Technologies AGInventor: Georg Tempel
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Patent number: 6787844Abstract: A semiconductor device comprises a first transistor having a composite gate structure containing a lamination of a first polycrystalline silicon film, an interlayer insulating film, and a second polycrystalline silicon film; and a second transistor having a single gate structure containing a lamination of a third polycrystalline silicon film and a fourth polycrystalline silicon film, wherein the first polycrystalline silicon film and the third polycrystalline silicon film have substantially the same thickness; the first polycrystalline silicon film and the third polycrystalline silicon film have different impurity concentrations controlled independently of each other; the second polycrystalline silicon film and the fourth polycrystalline silicon film have substantially the same thickness, and the second polycrystalline silicon film, the fourth polycrystalline silicon film, and the third polycrystalline silicon film have substantially the same impurity concentration.Type: GrantFiled: April 9, 2002Date of Patent: September 7, 2004Assignee: Nippon Steel CorporationInventor: Katsuki Hazama
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Patent number: 6787845Abstract: MOS transistor comprising: a channel region (120) made of a semiconducting material above which there is a grid structure, the grid structure comprising a grid (110) and insulating spacers (122) coating the sides of the grid, regions called source and drain extension regions (116a, 118a) located on each side of the channel, in direct contact with the semiconducting material of the channel, and arranged essentially under the grid structure, the extension regions being made of a non-insulating material, source and drain regions (146, 148) made of metal, in contact with source and drain extension regions respectively and extending partly under the grid structure. Application to manufacturing of integrated circuits.Type: GrantFiled: September 19, 2002Date of Patent: September 7, 2004Assignee: Commissariat a l'Energie AtomiqueInventor: Simon Deleonibus
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Patent number: 6787846Abstract: A field effect transistor is provided in which a drain current is not influenced by fluctuation of a gate voltage. In order to set the transistor in an on state (conductive state), a voltage equal to or more than a threshold voltage is applied to an inversion layer formation region (19) via a gate electrode (12) to thereby form an inversion layer. Charge inducted by the inversion layer moves to a channel region (18) and make the Fermi level of the channel region (18) fluctuate, and then, a potential barrier between a source region (16) and the channel region (18) is lowered. As a result, carriers can climb over the barrier and move from the source region (16) to a drain region (17), and thus, a drain current flows.Type: GrantFiled: March 4, 2003Date of Patent: September 7, 2004Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Tatsuya Honda
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Patent number: 6787847Abstract: A high-voltage transistor with a low specific on-state resistance and that supports high voltage in the off-state includes one or more source regions disposed adjacent to a multi-layered extended drain structure which comprises extended drift regions separated from field plate members by one or more dielectric layers. With the field plate members at the lowest circuit potential, the transistor supports high voltages applied to the drain in the off-state. The layered structure may be fabricated in a variety of orientations. A MOSFET structure may be incorporated into the device adjacent to the source region, or, alternatively, the MOSFET structure may be omitted to produce a high-voltage transistor structure having a stand-alone drift region.Type: GrantFiled: May 30, 2002Date of Patent: September 7, 2004Assignee: Power Integrations, Inc.Inventor: Donald Ray Disney
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Patent number: 6787848Abstract: A power MOSFET comprising a drain layer of a first conductivity type, a drift layer of the first conductivity type provided on the drain layer, a base layer of a first or a second conductivity type provided on the drift layer, a source region of the first conductivity type provided on the base layer, a gate insulating film formed on an inner wall surface of a trench penetrating the base layer and reaching at the drift layer, and a gate electrode provided on the gate insulating film inside the trench, wherein the gate insulating film is formed such that a portion thereof adjacent to the drift layer is thicker than a portion thereof adjacent to the base layer, and the drift layer has an impurity concentration gradient higher in the vicinity of the drain layer and lower in the vicinity of the source region along a depth direction of trench.Type: GrantFiled: July 1, 2002Date of Patent: September 7, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Syotaro Ono, Yusuke Kawaguchi
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Patent number: 6787849Abstract: Embodiments include a semiconductor device including a well structure such that well areas can be formed with a higher density of integration and a plurality of high-voltage endurable transistors can be driven independently of one another with different voltages, and a method of manufacturing the semiconductor device. The semiconductor device may include a triple well comprising a first well formed in a silicon substrate and having a first conductivity type (P-type), a second well formed in adjacent relation to the first well and having a second conductivity type (N-type), and a third well formed in the second well and having the first conductivity type (P-type). A high-voltage endurable MOSFET is provided in each of the wells. Each MOSFET has an offset area in the corresponding well around a gate insulating layer. The offset area is formed of a low-density impurity layer which is provided under an offset LOCOS layer on the silicon substrate.Type: GrantFiled: February 3, 2003Date of Patent: September 7, 2004Assignee: Seiko Epson CorporationInventor: Masahiro Hayashi
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Patent number: 6787850Abstract: The invention concerns a semi-conductor device comprising on a substrate: a first dynamic threshold voltage MOS transistor (10), with a gate (116), and a channel (111) of a first conductivity type, and a current limiter means (20) connected between the gate and the channel of said first transistor. In accordance with the invention, this first transistor is fitted with a first doped zone (160) of the first conductivity type, connected to the channel, and the current limiter means comprises a second doped zone (124) of a second conductivity type, placed against the first doped zone and electrically connected to the first zone by an ohmic connection. Application to the manufacture of CMOS circuits.Type: GrantFiled: July 27, 2001Date of Patent: September 7, 2004Assignee: Commissariat a l'Energie AtomiqueInventor: Jean-Luc Pelloie
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Patent number: 6787851Abstract: A semiconductor device in accordance with one example of the present invention pertains to a semiconductor device to be used for a CMOS inverter circuit, comprising a BOX layer 2 formed on a silicon substrate 1, a SOI film 3 including single crystal Si formed on the BOX layer, a gate oxide film 4 formed on the SOI film 3, a gate electrode 5 formed on the gate oxide film, and diffusion layers 7, 8 for source/drain regions formed in source/drain regions of the SOI film 3, wherein, when a power supply voltage of 0.6 V is used, a thickness TSOI of the SOI film 3 is 0.084 &mgr;m or greater and 0.094 &mgr;m or smaller, and an impurity concentration of the SOI film is 7.95×1017/cm3 or greater and 8.05×1017/cm3 or smaller.Type: GrantFiled: December 19, 2001Date of Patent: September 7, 2004Assignee: Seiko Epson CorporationInventor: Michiru Hogyoku
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Patent number: 6787852Abstract: A semiconductor-on-insulator (SOI) device. The SOI device includes a substrate having a buried oxide layer disposed thereon and an active layer disposed on the buried oxide layer. The active layer has an active region defined by isolation regions, the active region having a source and a drain with a body disposed therebetween. The source and the drain have a selectively grown silicon-germanium region disposed under an upper layer of selectively grown silicon. The silicon-geranium regions form heterojunction portions respectively along the source/body junction and the drain/body junction.Type: GrantFiled: October 23, 2002Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Bin Yu, Ralf van Bentum
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Patent number: 6787853Abstract: A semiconductor device includes an SOI substrate, trench memory cells including trench capacitors formed in the SOI substrate and a mesa or trench isolation region for isolating the trench memory cells. As a result, the trench memory cells are isolated more completely and soft errors are reduced.Type: GrantFiled: June 23, 2003Date of Patent: September 7, 2004Assignee: Renesas Technology Corp.Inventors: Hideto Hidaka, Katsuhiro Suma, Takahiro Tsuruda
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Patent number: 6787854Abstract: A method for forming a fin structure on a silicon-on-insulator (SOI) wafer that includes a silicon layer on an insulating layer that is formed over a semiconductor substrate includes etching the silicon layer using a first etch procedure, etching, following the first etch procedure, the silicon layer using a second etch procedure, and etching, following the second etch procedure, the silicon layer using a third etch procedure to form a T-shaped fin structure.Type: GrantFiled: March 12, 2003Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Chih-Yuh Yang, Shibly S. Ahmed, Srikanteswara Dakshina-Murthy, Cyrus E. Tabery, Haihong Wang, Bin Yu
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Patent number: 6787855Abstract: A semiconductor device and a manufacturing method thereof are obtained which can restrain increase of the parasitic capacitance generated between contact plugs of source/drain regions and a gate electrode while reducing the area of the source/drain regions. A channel region is formed under a gate electrode 1. A pair of source/drain regions 2 are formed to sandwich the channel region. The source/drain regions 2 have a first part 3a being adjacent to the channel region and a second part 3b formed to protrude in a channel width direction from the first part 3a so that a part of outer peripheries of the source/drain regions 2 extend away from the gate electrode 1 in a plan view. Contact plugs 4 are formed on the second part 3b for connecting the source/drain regions 2 to source/drain wirings.Type: GrantFiled: February 7, 2001Date of Patent: September 7, 2004Assignee: Renesas Technology Corp.Inventors: Yuuichi Hirano, Shigenobu Maeda, Shigeto Maegawa
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Patent number: 6787856Abstract: An ESD device and method using parasitic bipolar transistors that are silicided. The first embodiment is a parasitic Bipolar Junction Transistor comprised of n+/n−/p−/n−/n+ regions. The emitter is formed of the second N+ region and the second N− well. The parasitic base is formed by the p− substrate or well. The collector is formed of the first well and the first n+ region. The benefit of the first embodiment is the trigger voltage is lower because the junction between the n− well (emitter) and P− substrate (base) and the junction between P− substrate (base) and the n-well have lower cross over concentrations. The second embodiment is similar to the first embodiment with the addition of the first gate. The first gate is preferably connected to the first n+ region and the Vpad. The third embodiment contains the same elements as the second embodiment with the addition of a third n+ region.Type: GrantFiled: July 22, 2002Date of Patent: September 7, 2004Assignee: Nano Silicon Pte. Ltd.Inventors: David Hu, Jun Cai
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Patent number: 6787857Abstract: A semiconductor contact structure for a merged dynamic random access memory and a logic circuit (MDL) and a method of manufacturing the contact structure to: (i) a cell contact pad; (ii) at least one active region; and (iii) at least one gate electrode simultaneously, whereby an electric short between the gate electrodes and the cell contact pad is avoided, even in the event a lithographic misalignment occurs and whereby it is possible to obtain an overlap margin in the cell region, even with an improved metal contact to the gate electrode in the peripheral circuit region of the semiconductor device.Type: GrantFiled: October 28, 2002Date of Patent: September 7, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Hong Ki Kim, Duck Hyung Lee
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Patent number: 6787858Abstract: A structure protects CMOS logic from substrate minority carrier injection caused by the inductive switching of a power device. A single Integrated Circuit (IC) supports one or more power MOSFETs and one or more arrays of CMOS logic. A highly doped ring is formed between the drain of the power MOSFET and the CMOS logic array to provide a low resistance path to ground for the injected minority carriers. Under the CMOS logic is a highly doped buried layer to form a region of high recombination for the injected minority carriers. One or more CMOS devices are formed above the buried layer. The substrate is a resistive and the injected current is attenuated. The well in which the CMOS devices rest forms a low resistance ground plane for the injected minority carriers.Type: GrantFiled: October 16, 2002Date of Patent: September 7, 2004Assignee: Freescale Semiconductor, Inc.Inventors: Moaniss Zitouni, Edouard D. de Frésart, Richard J. De Souza, Xin Lin, Jennifer H. Morrison, Patrice Parris
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Patent number: 6787859Abstract: There is provided a semiconductor memory device including eight memory blocks 20a to 20h, first data bus 22a, and second data bus 22b. The eight memory blocks are arranged at respective eight of the total nine areas 11 to 19 defined in a three rows by three columns matrix except for a center area 19. A first data bus 22a linearly extends between memory blocks in the first and second row of the matrix. A second data bus 22b linearly extends between memory blocks in the second and third row of the matrix. The eight memory blocks includes a first group of the four memory blocks arranged adjacent the first data bus and connected to the first data bus and a second group of the four memory blocks arranged adjacent the second data bus and connected to the second data bus.Type: GrantFiled: August 20, 2002Date of Patent: September 7, 2004Assignee: Renesas Technology Corp.Inventors: Takashi Itou, Masaki Shimoda, Yasuhiko Tsukikawa
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Patent number: 6787860Abstract: A semiconductor device that includes a semiconductor substrate including a memory cell region and a dummy cell region, a plurality of substantially parallel bit lines in the semiconductor substrate, a plurality of memory cell gate dielectrics provided over the bit lines in the memory cell region, the memory cell gate dielectrics comprising an oxide-nitrideoxide (ONO) layer, a plurality of dummy cell gate dielectrics provided over the plurality of bit lines in the dummy cell region, wherein the dummy cell gate dielectrics is non-trapping for electric charges, and a plurality of substantially parallel word lines over the memory cell gate dielectrics and the dummy cell gate dielectrics.Type: GrantFiled: May 1, 2003Date of Patent: September 7, 2004Assignee: Macronix International Co., Ltd.Inventors: Jen-Ren Huang, Ming-Hung Chou
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Patent number: 6787861Abstract: The invention relates to non-crystalline oxides of formulas (I) and (II), and methods of forming the same, along with field effect transistors, articles of manufacture, and microelectronic devices comprising the non-crystalline oxides.Type: GrantFiled: June 25, 2001Date of Patent: September 7, 2004Assignee: North Carolina State UniversityInventors: Gerald Lucovsky, Gregory N. Parsons
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Patent number: 6787862Abstract: The present invention relates to a gas insulated gate field effect transistor and a fabricating method thereof which provides an improved insulator between the gate and the source-drain channel of a field effect transistor. The insulator is a vacuum or a gas filled trench. As compared to a conventional MOSFET, the gas insulated gate device provides reduced capacitance between the gate and the source/drain region, improved device reliability and durability, and improved isolation from interference caused by nearby electric fields. The present invention includes the steps of forming a doped source region and drain region on a substrate, forming a gate, forming a gaseous gate insulating trench and forming terminals upon the gate, the source region and the drain region. A plurality of the devices on a single substrate may be combined to form an integrated circuit.Type: GrantFiled: December 19, 2002Date of Patent: September 7, 2004Inventor: Mark E. Murray
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Patent number: 6787863Abstract: A semiconductor device comprising a silicon substrate and an insulating film adjacent thereto and which operates by applying a voltage to an electrode opposed to the silicon substrate with the insulating film interposed between; wherein an intermediate film is contained that is located between the silicon substrate and the insulating film and has a thickness of 0.2-1 nm. A method for manufacturing such a semiconductor device is also disclosed.Type: GrantFiled: May 14, 2003Date of Patent: September 7, 2004Assignee: Semiconductor Technology Academic Research CenterInventor: Anri Nakajima
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Patent number: 6787864Abstract: A MOSFET gate or a MOSFET source or drain region comprises silicon germanium or polycrystalline silicon germanium. Silicidation with nickel is performed to form a nickel germanosilicide that preferably comprises the monosilicide phase of nickel silicide. The inclusion of germanium in the silicide provides a wider temperature range within which the monosilicide phase may be formed, while essentially preserving the superior sheet resistance exhibited by nickel monosilicide. As a result, the nickel germanosilicide is capable of withstanding greater temperatures during subsequent processing than nickel monosilicide, yet provides approximately the same sheet resistance and other beneficial properties as nickel monosilicide.Type: GrantFiled: December 31, 2002Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Eric N. Paton, Qi Xiang, Paul R. Besser, Ming-Ren Lin, Minh V. Ngo, Haihong Wang
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Patent number: 6787865Abstract: A small and thin pressing direction sensor that can continually detect pressing directions in the angle range of 360 degrees is provided. This pressing direction sensor includes a ring-like resistive film pattern, a first electrode pattern, and a conductive member that electrically connects the resistive film pattern and the first electrode pattern when pressed. The voltage of the first electrode pattern represents the pressing direction. This pressing direction sensor may further include a second electrode pattern. A signal representing the pressing force can be obtained from the second electrode pattern when the pressed conductive member is brought into contact with the second electrode pattern.Type: GrantFiled: January 3, 2003Date of Patent: September 7, 2004Assignee: Fujitsu Component LimitedInventors: Michiko Endo, Yuriko Nishiyama, Ryoji Kikuchi, Norio Endo
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Patent number: 6787866Abstract: A protective sheet is fixed to a jig, and regions of the protective sheet corresponding to regions where dicing-cut is to be performed are removed to form grooves. Then, a semiconductor wafer is bonded to the protective sheet at an opposite side of the jig, and the jig is detached from the protective sheet and the semiconductor wafer bonded together. After that, the semiconductor wafer is cut into semiconductor chips by dicing along the grooves of the protective sheet. Because the protective sheet is not cut by dicing, no scraps of the protective sheet is produced, thereby preventing contamination to the chips.Type: GrantFiled: March 7, 2002Date of Patent: September 7, 2004Assignee: Denso CorporationInventors: Tetsuo Fujii, Tsuyoshi Fukada, Kenichi Ao
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Patent number: 6787867Abstract: A manufacturing method for a planar lightwave circuit device. A lift-off mask layer is formed on a planar lightwave circuit composed of cores and a cladding. The lift-off mask layer is next exposed to light by using a mask having a plurality of first patterns respectively corresponding to the cores and a plurality of second patterns each formed on at least one side of each first pattern in spaced relationship therewith. A wiring pattern material layer is next deposited on the lift-off mask layer exposed above, and the lift-off mask layer is next stripped off to thereby form a plurality of real patterns respectively corresponding to the first patterns and a plurality of dummy patterns respectively corresponding to the second patterns, from the wiring pattern material layer.Type: GrantFiled: October 18, 2002Date of Patent: September 7, 2004Assignee: Fujitsu LimitedInventors: Yasuki Sakurai, Michiharu Itou, Takashi Shiotani
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Patent number: 6787868Abstract: The invention provides integrated optical matching elements for use in integrated optical devices. The matching elements each comprise one or more lenses. The lenses may have low index contrast with the surrounding medium. Required dioptric power is achieved by using a train of lenses. Optical matching elements according to the invention can be used to enhance the optical coupling between channel waveguides and slab waveguides. The insertion loss of devices such as optical power splitters, optical couplers and arrayed waveguide grating routers can be reduced by incorporating optical matching elements according to the invention.Type: GrantFiled: September 25, 2001Date of Patent: September 7, 2004Assignee: Lightwave Microsystems CorporationInventors: Kenneth McGreer, Ming Yan, Brian McGinnis
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Patent number: 6787869Abstract: Optical semiconductor package (10) and process for fabricating an optical semiconductor package, in which an electrical connection support plate has a through-passage (37); a semiconductor component (34), a front face (33) of which has an optical sensor and which is fixed to a rear face of the plate in such a way that its optical sensor is situated opposite the through-passage; electrical connection (38) connects the optical component to the support plate; the component is encapsulated on the rear face of the support plate; a lid (50), which is at least partially transparent, is fixed to a front face of the support plate and covers the through-passage; and external electrical connections (51) are located on an exposed part of the support plate. Furthermore, another semiconductor component (41) may be fixed to the rear face of the support plate (43) and electrically connected, to the latter, this component also being encapsulated (49).Type: GrantFiled: September 20, 2002Date of Patent: September 7, 2004Assignee: STMicroelectronics S.A.Inventor: Julien Vittu
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Patent number: 6787870Abstract: A semiconductor component with an integrated circuit has a cooling body as a heat sink and a temperature sensor thermally connected thereto, whose resistance is dependent on temperature. The temperature sensor contains a thin film measuring resistor, which is applied to an electrically insulating surface of a foil-like substrate, and the total thickness of the temperature sensor lies in a range of about 10 &mgr;m to 100 &mgr;m. The thin film measuring resistor is formed as a planar component, with the temperature sensor being arranged between the integrated circuit and the cooling body. The thin film measuring resistor is provided on one side with a thermal coupling layer bordering on the cooling body, while on the other side the resistor has a substrate bordering on a heat distributor, which at least partially surrounds the integrated circuit.Type: GrantFiled: May 23, 2003Date of Patent: September 7, 2004Assignee: Heraeus Sensor Technology GmbHInventors: Karl-Heinz Wienand, Karlheinz Ullrich
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Patent number: 6787871Abstract: An integrated Schottky barrier diode chip includes a compound semiconductor substrate, a plurality of Schottky barrier diodes formed on the substrate and an insulating region formed on the substrate by an on implantation. The insulating region electrically separates a portion of a diode at a cathode voltage from a portion of the diode at an anode voltage. Because of the absence of a polyimide layer and trench structures, this planar device configuration results in simpler manufacturing method and improved device characteristics.Type: GrantFiled: October 30, 2002Date of Patent: September 7, 2004Assignee: Sanyo Electric Co., Ltd.Inventors: Tetsuro Asano, Katsuaki Onoda, Yoshibumi Nakajima, Shigeyuki Murai, Hisaaki Tominaga, Koichi Hirata, Mikito Sakakibara, Hidetoshi Ishihara
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Patent number: 6787872Abstract: A lateral conduction superjunction semiconductor device has a plurality of spaced vertical trenches in a junction receiving layer of P− silicon. An N− diffusion lines the walls of the trench and the concentration and thickness of the N− diffusion and P− mesas are arranged to deplete fully in reverse blocking operation. A MOSgate structure is connected at one end of the trenches and a drain is connected at its other end. An N− further layer or an insulation oxide layer may be interposed between a P− substrate and the P− junction receiving layer.Type: GrantFiled: June 26, 2001Date of Patent: September 7, 2004Assignee: International Rectifier CorporationInventors: Daniel M. Kinzer, Srikant Sridevan
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Patent number: 6787873Abstract: A first guard ring formed by high concentration ion diffusion is established around the transistor formation region of the semiconductor substrate. A second guard ring is established around the first guard ring with a prescribed gap therebetween. A metal film is formed opposing to each guard ring with an insulating film interposed therebetween; these metal films are connected to the opposing guard rings by interlayer wires. The metal films are each connected to external terminals providing a standard potential by individual metal wires from their respective electrodes.Type: GrantFiled: March 14, 2003Date of Patent: September 7, 2004Assignee: Oki Electric Industry Co., Ltd.Inventor: Tadamasa Murakami
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Patent number: 6787874Abstract: Noise-reduced semiconductor devices operating at a high frequency band greater than several GHz are disclosed. Also disclosed is a method for manufacturing such semiconductor devices. A trench penetrating through a semiconductor substrate surrounds a noise-generating circuit block and/or a noise-susceptible circuit block, in order to reduce noise propagation through the substrate. Noise-reduced semiconductor devices are fabricated with a conventional silicon wafer instead of an SOI (Silicon on Insulator) wafer, which is manufactured in a complicated process sequence.Type: GrantFiled: June 10, 2002Date of Patent: September 7, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroki Ootera
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Patent number: 6787875Abstract: A method of forming a via in an integrated circuit is provided. The method includes forming a stack including a first layer, a hard mask layer, and at least one intermediate layer disposed between the first layer and the hard mask layer. The first layer comprises a first metal line. The method further includes forming a channel in the hard mask layer. The channel has a first side and a second side opposite the first side. The method further includes forming a resist layer having an opening extending over both the first and second sides of the channel. The method further includes forming a metal line trench and a via opening aligned with the first and second sides of the channel. The method further includes filling the filling the metal line trench and the via opening with a conductive material to create a second metal line and a via connecting the second metal line with the first metal line.Type: GrantFiled: August 5, 2002Date of Patent: September 7, 2004Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Paul M. Gillespie
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Patent number: 6787876Abstract: A semiconductor device comprises a substrate (11) having an insulating layer (12) formed on a surface thereof, and a silicon layer (13) located on a surface of the insulating layer. A trench (14) extends from a surface of the silicon layer (13) through the insulating layer (12) and into the substrate (11). An insulating liner (14a) is located on the side walls and the base of the trench (14), and an in-fill (14b) of thermally-conductive material is formed within the insulating liner. The insulating liner (14a), the in-fill material (14b) and the distance over which the trench 14) extends into the substrate (11) are such as to promote flow of heat from the silicon layer (13) to the substrate.Type: GrantFiled: September 12, 2001Date of Patent: September 7, 2004Assignee: Zarlink Semiconductor LimitedInventor: Martin Clive Wilson
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Patent number: 6787877Abstract: A semiconductor processing method for filling structural gaps includes depositing a substantially boron free silicon oxide comprising material at a first average deposition rate over an exposed semiconductive material in a gap between wordline constructions and at a second average deposition rate less than the first average deposition rate over the wordline constructions. A reduced gap having a second aspect ratio less than or equal to a first aspect ratio of the original gap may be provided. An integrated circuit includes a pair of wordline constructions separated by a gap therebetween in areas where the wordline constructions do not cover an underlying semiconductive substrate. A layer of substantially boron free silicon oxide material has a first thickness over the substrate within the gap and has a second thickness less than the first thickness over the wordline constructions.Type: GrantFiled: December 27, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventor: Chris W. Hill