Patents Assigned to Renesas Technology
  • Patent number: 7760178
    Abstract: A liquid crystal display is provided with: a tap adjustment register for adjusting a gray scale level to a gray scale voltage in intermediate portions close to the end portions of the gamma characteristic; and a partial-voltage-ratio adjustment register for adjusting a ratio of a gray scale voltage among a plurality of gray scale levels in the intermediate portions close to the end portions of the gamma characteristic, in addition to an amplitude adjustment register for adjusting an amplitude of a gamma characteristic which determines a relation between gray scale levels and gray scale voltages or brightness levels on a display panel; a gradient adjustment register for adjusting a gradient of intermediate portions of the gamma characteristic while fixing end portions of the gamma characteristic; and a fine adjustment register for finely adjusting the intermediate portions of the gamma characteristic for each gray scale level.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Naoki Takada, Yasuyuki Kudo, Takuya Eriguchi, Akihito Akai, Kazuo Okado
  • Patent number: 7759209
    Abstract: A memory cell has a control gate electrode disposed on a main surface of a semiconductor substrate through a gate insulating film, an ONO film disposed along a side surface of the control gate electrode and the main surface of semiconductor substrate, a memory gate electrode disposed on a side surface of the control gate electrode and also on the main surface of the semiconductor substrate through the ONO film. The control gate electrode and the memory gate electrode are formed, over the upper portions thereof, with a silicide film and an insulating film formed by oxidation of the surface of the silicide film, respectively.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Satoru Machida, Yasushi Ishii, Toshio Kudo, Masato Takahashi, Yukihiro Suzuki
  • Patent number: 7759730
    Abstract: A gate trench 13 is formed in a semiconductor substrate 10. The gate trench 13 is provided with a gate electrode 16 formed over a gate insulating film 14. A portion of the gate electrode 16 protrudes from the semiconductor substrate 10, and a sidewall 24 is formed over a side wall portion of the protruding portion. A body trench 25 is formed in alignment with an adjacent gate electrode 16. A cobalt silicide film 28 is formed over a surface of the gate electrode 16 and over a surface of the body trench 25. A plug 34 is formed using an SAC technique.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Hitoshi Matsuura, Yoshito Nakazawa, Tsuyoshi Kachi, Yuji Yatsuda
  • Patent number: 7759224
    Abstract: A technique capable of stably releasing chips from a dicing tape, includes grinding a back surface of a semiconductor wafer, while adhering a pressure sensitive adhesive tape to a circuit forming surface of the semiconductor wafer formed with an integrated circuit, to achieve a predetermined thickness and forcibly oxidizing the back surface of the semiconductor wafer. Then, the pressure sensitive adhesive tape adhered to the circuit forming surface of the semiconductor wafer is released, and a dicing tape is adhered to the back surface of the semiconductor wafer. Further, the semiconductor wafer is divided by dicing it into individual chips, and then the back surface of the chip is pressed by way of the dicing tape, thereby releasing the chips from the dicing tape.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Chuichi Miyazaki, Yoshiyuki Abe, Toshihide Uematsu, Minoru Kimura, Kazunari Suzuki, Masao Odagiri, Hideyuki Suga, Manabu Takata
  • Patent number: 7759798
    Abstract: A semiconductor device wherein destruction of a sealing ring caused by cracking of an interlayer dielectric film is difficult to occur, as well as a method for manufacturing the semiconductor device, are provided. A first laminate comprises first interlayer dielectric films having a first mechanical strength. A second laminate comprises second interlayer dielectric films having a mechanical strength higher than the first mechanical strength. A first region includes first metallic layers and vias provided within the first laminate. A second region includes second metallic layers and vias provided within the second laminate. When seen in plan, the second region overlaps at least a part of the first region, is not coupled with the first region by vias, and sandwiches the second interlayer dielectric film between it and the first region.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Hiroyuki Chibahara, Atsushi Ishii, Naoki Izumi, Masahiro Matsumoto
  • Patent number: 7759804
    Abstract: A semiconductor device includes plural electrode pads arranged in an active region of a semiconductor chip, and wiring layers provided below the plural electrode pads wherein occupation rates of wirings arranged within the regions of the electrode pads are, respectively, made uniform for every wiring layer. To this end, in a region where an occupation rate of wiring is smaller than those in other regions, a dummy wiring is provided. On the contrary, when the occupation rate of wiring is larger than in other regions, slits are formed in the wiring to control the wiring occupation rate. In the respective wirings layers, the shapes, sizes and intervals of wirings below the respective electrode pads are made similar or equal to one another.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: July 20, 2010
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Taku Kanaoka, Masashi Sahara, Yoshio Fukayama, Yutaro Ebata, Kazuhisa Higuchi, Koji Fujishima
  • Patent number: 7759720
    Abstract: Provided is a nonvolatile semiconductor memory device highly integrated and highly reliable. A plurality of memory cells are formed in a plurality of active regions sectioned by a plurality of isolations (silicon oxide films) extending in the Y direction and deeper than a well (p type semiconductor region). In each memory cell, a contact is provided in the well (p type semiconductor region) so as to penetrate through a source diffusion layer (n+ type semiconductor region), and the contact that electrically connects bit lines (metal wirings) and the source diffusion layer (n+ type semiconductor region) is also electrically connected to the well (p type semiconductor region).
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Tsuyoshi Arigane, Digh Hisamoto, Yasuhiro Shimamoto, Toshiyuki Mine
  • Patent number: 7759161
    Abstract: In order to implement a high-density high-performance semiconductor system small in size, there is provided a method for implementing three-dimensional connection between a plurality of semiconductor chips differing from each other with the shortest metal interconnect length, using penetration electrodes, thereby enabling a fast operation at a low noise level, the method being a three-dimensional connection method very low in cost, and short in TAT in comparison with the known example, capable of bonding at an ordinary temperature, and excellent in connection reliability.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Naotaka Tanaka, Yasuhiro Yoshimura, Takahiro Naito, Takashi Akazawa
  • Patent number: 7759164
    Abstract: A manufacturing method of a semiconductor device comprising the steps of: affixing a die attach film and a dicing film to a back surface of a semiconductor wafer: thereafter dicing the semiconductor wafer and the die attach film to divide the semiconductor wafer into a plurality of semiconductor chips: thereafter pulling the dicing film from the center toward the outer periphery of the dicing film with a first tensile force to cut the die attach film chip by chip; and thereafter picking up the semiconductor chips together with the die attach film while pulling the dicing film from the center toward the outer periphery of the dicing film with a second tensile force smaller than the first tensile force.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Hiroshi Maki, Kazuhiro Seiki, Eiji Wada
  • Patent number: 7757930
    Abstract: Productivity is to be improved in assembling a semiconductor integrated circuit device. A matrix substrate is provided and semiconductor chips are disposed on a first heating stage, then the matrix substrate is disposed above the semiconductor chips on the first heating stage, subsequently the semiconductor chips and the matrix substrate are bonded to each other temporarily by thermocompression bonding while heating the chips directly by the first heating stage, thereafter the temporarily bonded matrix substrate is disposed on a second heating stage adjacent to the first heating stage, and then on the second heating stage the semiconductor chips are thermocompression-bonded to the matrix substrate while being heated directly by the second heating stage.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: July 20, 2010
    Assignees: Renesas Technology Corp., Renesas Eastern Japan Semiconductor, Inc.
    Inventors: Hiroshi Maki, Yukio Tani
  • Patent number: 7759793
    Abstract: Regarding a semiconductor device, especially the present invention suppresses disconnection of the connection structure concerned in the semiconductor device which has the electric and mechanical connection structure using solder, and aims at improving connection reliability. And to achieve the above objects, the semiconductor device has the solder bump which electrically connects a semiconductor chip and a package substrate, the under-filling resin with which it filled up between the semiconductor chip and the package substrate, and a solder ball which electrically connects a package substrate with the outside, and the solder bump's elastic modulus is made lower than the elastic modulus of a solder ball.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventor: Eiji Hayashi
  • Patent number: 7759722
    Abstract: When microfabrication is done, a reliable semiconductor device is offered. A semiconductor device has a semiconductor substrate which has a main front surface, a plurality of convex patterns formed on the main front surface of a semiconductor substrate so that each might have a floating gate and a control gate, a first insulating film formed so that the upper surface and the side surface of each of a plurality of convex patterns might be covered, and so that width might become large rather than the portion which covers the lower part side surface of a convex pattern in the portion which covers an upper part side surface, and a second insulating film that covers the upper surface and the side surface of the first insulating film so that the cavity between the adjacent convex patterns may be occluded. The position occluded by the second insulating film of a cavity is a position higher than the upper surface of a floating gate, and is a position lower than the upper surface of a control gate.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: July 20, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Tatsunori Murata, Koyu Asai, Hiroaki Iuchi
  • Publication number: 20100176511
    Abstract: A semiconductor device includes an interlayer insulation film, an underlying line provided in the interlayer insulation film, a liner film overlying the interlayer insulation film, an interlayer insulation film overlying the liner film. The underlying line has a lower hole and the liner film and the interlayer insulation film have an upper hole communicating with the lower hole, and the lower hole is larger in diameter than the upper hole. The semiconductor device further includes a conductive film provided at an internal wall surface of the lower hole, a barrier metal provided along an internal wall surface of the upper hole, and a Cu film filling the upper and lower holes. The conductive film contains a substance identical to a substance of the barrier metal. A highly reliable semiconductor device can thus be obtained.
    Type: Application
    Filed: March 23, 2010
    Publication date: July 15, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Kazuyoshi Maekawa, Kenichi Mori
  • Publication number: 20100178752
    Abstract: A fuse includes a fuse portion laid in such a manner that the direction of each turn of the fuse portion is parallel to the direction in which pads are arranged. The distance between the pads and the fuse portion is defined as the distance between the side of a pad facing the fuse portion and the pad nearest to the turn facing the particular side. The distance between the turn of the fuse portion and the nearest pad is the distance between the pads and the fuse portion. The pads and the fuse portion are distant from each other by a length at least ten times the width of the fuse.
    Type: Application
    Filed: March 24, 2010
    Publication date: July 15, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Kazushi KONO, Takeshi IWAMOTO, Toshiaki YONEZU
  • Publication number: 20100177814
    Abstract: The present invention provides an equalizer and a semiconductor device, that can suppress a decrease in S/N ratio of a reception signal, can facilitate a disconnection test by a direct current signal, and are excellent in reproducibility of a transmission signal. A low-pass filter receives a reception signal supplied from a reception end to output a signal obtained by removing a high frequency component from the reception signal. A subtraction unit subtracts an output signal from the low-pass filter from the reception signal. An addition unit adds the reception signal from the reception end to an output signal from the subtraction unit. Thus, an output signal from the addition unit has a frequency characteristic of emphasizing the high frequency component. Then, an amplifier amplifies the output signal from the addition unit to transmit it to an output end.
    Type: Application
    Filed: March 23, 2010
    Publication date: July 15, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Hideki UCHIKI, Atsuhiko Ishibashi
  • Publication number: 20100176430
    Abstract: The present invention provides a technology for reducing the parasitic inductance of the main circuit of a power source unit.
    Type: Application
    Filed: March 10, 2010
    Publication date: July 15, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Takayuki Hashimoto, Noboru Akiyama, Masaki Shiraishi, Tetsuya Kawashima
  • Patent number: 7756494
    Abstract: The RF power amplifier includes first and second amplifiers Q1 and Q2 as final-stage amplification power devices connected in parallel between an input terminal RF_In and an output terminal RF_Out. The amplifiers Q1 and Q2 are formed on one semiconductor chip. The first bias voltage Vg1 of the amplifier Q1 is set to be higher than the second bias voltage Vg2 of the amplifier Q2 so that the amplifier Q1 is operational between Class B and AB, and Q2 is operational in Class C. The first effective device size Wgq1 of the amplifier Q1 is intentionally set to be smaller than the second effective device size Wgq2 of the amplifier Q2 beyond a range of a manufacturing error of the semiconductor chip. An RF power amplifier that exhibits a high power-added efficiency characteristic regardless of whether the output power is High or Low can be materialized.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: July 13, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Toru Fujioka, Toshihiko Shimizu, Masami Ohnishi, Hidetoshi Matsumoto, Satoshi Tanaka
  • Patent number: 7755148
    Abstract: Logic LSI includes first power domains PD1 to PD4, thick-film power switches SW1 to SW4, and power switch controllers PSWC1 to PSWC4. The thick-film power switches are formed by thick-film power transistors manufactured in a process common to external input/output circuits I/O. The first power domains include second power domains SPD11 to SPD42 including logic blocks, control circuit blocks SCB1 to SCB4, and thin-film power switches SWN11 to SWN42 that are connected to the thick-film power switches via virtual ground lines VSSM1 to VSSM4, and formed by thin-film power transistors manufactured in a process common to the logic blocks. In this way, power switches having different thickness of gate insulating films from one another are vertically stacked so as to be in a hierarchical structure, and each power switch is individually controlled by a power switch controller and a control circuit block correspondingly to each mode.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: July 13, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yusuke Kanno, Kenichi Yoshizumi
  • Patent number: 7755182
    Abstract: A hybrid integrated circuit device having high mount reliability comprises a module substrate which is a ceramic wiring substrate, a plurality of electronic component parts laid out on the main surface of the module substrate, a plurality of electrode terminals laid out on the rear surface of the module substrate, and a cap which is fixed to the module substrate to cover the main surface of the module substrate. The electrode terminals include a plurality of electrode terminals which are aligned along the edges of the module substrate and power voltage supply terminals which are located inner than these electrode terminals. The electrode terminals aligned along the substrate edges are coated, at least in their portions close to the substrate edge, with a protection film having a thickness of several tens micrometers or less. Connection reinforcing terminals consist of a plurality of divided terminals which are independent of each other, and are ground terminals.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: July 13, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Shinji Moriyama, Tomio Yamada
  • Patent number: 7754562
    Abstract: A semiconductor device, having a memory cell region and a peripheral circuit region, includes an insulating film, having an upper surface, formed on a major surface of a semiconductor substrate to extend from the memory cell region to the peripheral circuit region. A capacitor lower electrode assembly is formed in the memory cell region to upwardly extend to substantially the same height as the upper surface of the insulating film on the major surface of the semiconductor substrate. Additionally, the lower electrode assembly includes first and second lower electrodes that are adjacent through the insulating film. A capacitor upper electrode is formed on the capacitor lower electrode through a dielectric film, to extend onto the upper surface of the insulating film. The capacitor lower electrode includes a capacitor lower electrode part having a top surface and a bottom surface.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: July 13, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yoshinori Tanaka, Masahiro Shimizu, Hideaki Arima