Patents Assigned to Renesas Technology Corp.
  • Patent number: 7818469
    Abstract: In a USB device comprising a plurality of functional modules that includes a control circuit for switching a functional module to be activated from among the functional modules included in the USB device according to a potential level of a power applied from a host connected to the USB device. The control circuit includes: a voltage detector for discriminating a voltage value of power; a switch for controlling powers to be applied to the respective functional modules; and memories for storing descriptors relating to the USB device. The control circuit makes power applied to a functional module to be activated by the switch into ON state according to a discrimination result of the voltage value of the power by the voltage detector, thereby transferring the descriptors stored in the memories to a host.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: October 19, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yoshinori Mochizuki, Masaharu Ukeda
  • Patent number: 7816757
    Abstract: High density mounting and power source sharing are achieved by a digital semiconductor element and an analog semiconductor element provided in a common semiconductor device. A power layer for analog operation is connected to one end of an EBG (Electromagnetic Band Gap) layer, a power layer for digital operation is connected to the other end of the EBG layer, ground terminals for the respective elements are connected to a common ground layer, and a ground layer for separating the power layer for analog operation and the EBG layer from each other is disposed between the power layer for analog operation and the EBG layer. Thereby, high density mounting is achieved along with reducing interference of the power source to an analog chip.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: October 19, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Hideki Osaka, Yutaka Uematsu, Eiichi Suzuki
  • Publication number: 20100258922
    Abstract: To prevent, in a resin-sealed type semiconductor package, generation of cracks in a die bonding material used for mounting of a semiconductor chip. A semiconductor chip is mounted over the upper surface of a die pad via a die bonding material, followed by sealing with an insulating resin. The top surface of the die pad to be brought into contact with the insulating resin is surface-roughened, while the bottom surface of the die pad and an outer lead portion are not surface-roughened.
    Type: Application
    Filed: March 5, 2010
    Publication date: October 14, 2010
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventors: Hiroyuki NAKAMURA, Akira MUTO, Nobuya KOIKE, Atsushi NISHIKIZAWA, Yukihiro SATO, Katsuhiko FUNATSU
  • Publication number: 20100261334
    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: Application
    Filed: June 23, 2010
    Publication date: October 14, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Hiroyuki CHIBAHARA, Atsushi Ishii, Naoki Izumi, Masahiro Matsumoto
  • Publication number: 20100258948
    Abstract: A semiconductor wafer comprising: a tubular trench formed at a position to form a through-hole electrode of a wafer; an insulating member buried inside the trench and on an upper surface of the trench; a gate electrode film and a metal film formed on an upper surface of the insulating member; a multilevel columnar wiring via formed on an upper surface of the metal film; and an external connection electrode formed electrically connected to the metal film via the multilevel columnar wiring via. In this manner, it is unnecessary to have a new process of dry etching to form a through-hole electrode after thinning the wafer and equipment development. Moreover, introduction of a specific design enables formation of through-hole electrodes with significantly reduced difficulties of respective processes.
    Type: Application
    Filed: June 25, 2010
    Publication date: October 14, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Naotaka Tanaka, Kenji Kanemitsu, Takafumi Kikuchi, Takashi Akazawa
  • Patent number: 7813156
    Abstract: The present invention provides a sense circuit for DRAM memory cell to cover the events that a sense time becomes remarkably longer when a power source voltage is lowered, a sense time under the low voltage condition becomes shorter when temperature rises and a sense time changes to a large extent for fluctuation of processes. The present invention provides the following typical effects. A switch means is provided between the bit line BL and local bit line LBL connected to the memory cells for isolation and coupling of these bit lines. The bit line BL is precharged to the voltage of VDL/2, while the local bit line LBL is precharged to the voltage of VDL. The VDL is the maximum amplitude voltage of the bit line BL. A sense amplifier SA comprises a first circuit including a differential MOS pair having the gate connected to the bit line BL and a second circuit connected to the local bit line LBL for full amplitude amplification and for holding the data.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: October 12, 2010
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Hiroyuki Mizuno, Takeshi Sakata, Nobuhiro Oodaira, Takao Watanabe, Yusuke Kanno
  • Patent number: 7813710
    Abstract: The present invention is a receiving circuit used for a cellular phone that is reduced in size and can realize low power consumption. In a signal reception circuit that is used in a cellular phone that perform transmission and reception of a plurality of band wireless signals and includes a low-pass filter for removing blockers unnecessary for signal reception, the low-pass filter 104 is composed of a plurality of filters composed of a plurality of different circuit configurations and having a plurality of different pole positions, switching between a filter for blocker removal and a filter configuration with reduced sensitivity degradation is performed by combining a plurality of filters for each signal reception band, and by performing power-off of an unnecessary filter portion in the filter configuration, power consumption is reduced.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: October 12, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yusaku Katsube, Akio Yamamoto
  • Patent number: 7814343
    Abstract: A semiconductor integrated circuit device which consumes less power and enables real-time processing. The semiconductor integrated circuit device includes thermal sensors which detect temperature and determine whether the detection result exceeds reference values and output the result, and a control block capable of controlling the operations of arithmetic blocks based on the output signals of the thermal sensors. The control block returns to an operation state from a suspended state with an interrupt signal based on the output signals of the thermal sensors and determines the operation conditions of the arithmetic blocks to ensure that the temperature conditions of the arithmetic blocks are satisfied. Thereby, power consumption is reduced and real-time processing efficiency is improved.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: October 12, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yusuke Kanno, Hiroyuki Mizuno, Naohiko Irie
  • Patent number: 7812389
    Abstract: Distance ?m between a floating gate and a drain contact of a floating gate transistor forming a memory cell is set to be greater than a distance ? determined based on a minimum design dimension between a control gate and a contact of a peripheral transistor. Data retention characteristics of a programmable memory which stores data in accordance with the amount of accumulated charges in the floating gate can be ensured without being affecting by mask misalignment or the like.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: October 12, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Takashi Tanaka, Seiichi Endo
  • Patent number: 7813616
    Abstract: A semiconductor device includes a gate electrode having a straight portion, a dummy electrode located at a point on the extension of the straight portion, a stopper insulating film, a sidewall insulating film, an interlayer insulating film, and a linear contact portion extending, when viewed from above, parallel to the straight portion. The longer side of the rectangle defined by the linear contact portion is, when viewed from above, located beyond the sidewall insulating film and within the top region of the gate electrode and the dummy electrode. A gap G between the gate electrode and the dummy electrode appearing, when viewed from above, in the linear contact portion is filled with the sidewall insulating film such that the semiconductor substrate is not exposed.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: October 12, 2010
    Assignee: Renesas Technology Corp.
    Inventor: Satoshi Shimizu
  • Publication number: 20100257313
    Abstract: A semiconductor device has operation modes selectable through the control by a second microcomputer (113). In a first mode, an operation of a memory controller (105) responding to a memory card command from a memory card interface terminal and an operation of a first microcomputer (106) responding to an IC card command from an IC card interface terminal are separately performed. In a second mode, the first microcomputer operates in response to the IC card command from the IC card interface terminal. In a third mode, the memory controller and the first microcomputer operate in response to an undefined IC card command from the IC card interface terminal. In a fourth mode, the memory controller and the first microcomputer operate in response to the memory card command from the memory card interface terminal. Convenience of the semiconductor device having an IC card function and a memory card function is improved.
    Type: Application
    Filed: May 16, 2007
    Publication date: October 7, 2010
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventors: Hirotaka Nishizawa, Junichiro Osako, Minoru Shinohara, Tamaki Wada, Kunihirio Katayama, Shigemasa Shiota
  • Publication number: 20100255677
    Abstract: It has been found by the present inventors, et. al. that, in a modern 0.15 ?m power MOSFET, aluminum voids (voids formed in aluminum type electrode) are generated frequently in trench portions (source contact trenches) caused by the reduction of a cell pitch for refinement. It is considered to be attributable to that the defects are generated mainly due to sudden increase of the aspect ratio from 0.84 in the previous generation to 2.8 in the current generation. That is, according to an invention of the present application, concave portions of repetitive trenches having a high aspect ratio are filled with an aluminum type metal by ionized sputtering through out the processing from the formation to the filling of an aluminum type metal seed film.
    Type: Application
    Filed: March 5, 2010
    Publication date: October 7, 2010
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventor: Tatsuhiko MIURA
  • Publication number: 20100257324
    Abstract: A variable delay line receives and delays a data strobe signal transferred from a data source side in synchronization with a transfer data by a predetermined period, and produces a delayed data strobe signal and the non-delayed data strobe signal to a detector. The detector determines that a preamble period ends and effective data is transferred, when the delayed data strobe signal is at the L level at the time of rising of the non-delayed data strobe signal from the L level to the H level. According to a result of detection, an interface circuit unit takes in the transfer data and initializes a take-in address. The data strobe signal changes to a high-impedance state when a postamble ends. An influence of a glitch noise is avoided upon this change of the data strobe signal, and the data transfer can be executed fast and accurately.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 7, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Tokuya Osawa, Masaru Haraguchi, Yoshikazu Morooka, Hiroshi Kinoshita
  • Publication number: 20100255673
    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: Application
    Filed: June 17, 2010
    Publication date: October 7, 2010
    Applicant: Renesas Technology Corp.
    Inventor: Eiji HAYASHI
  • Patent number: 7808031
    Abstract: The present fabrication method includes the steps of: providing a nitride film in a main surface of a semiconductor substrate; providing an upper trench, with the nitride film used as a mask; filling the upper trench with an oxide film introduced therein; removing the oxide film to expose at least a portion of a bottom of the upper trench and allowing a remainder of the oxide film to serve as a sidewall; providing a lower trench in a bottom of the upper trench, with the sidewall used as a mask; and with the upper trench having the sidewall remaining therein, providing an oxide film in the upper trench and the lower trench. This can provide a semiconductor device fabrication method and a semiconductor device preventing a contact from penetrating the device in an interconnection process.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: October 5, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Jun Sumino, Satoshi Shimizu, Tsuyoshi Sugihara
  • Patent number: 7808076
    Abstract: The semiconductor device which has an electric straight line-like fuse with a small occupying area is offered. A plurality of projecting portions 10f are formed in the position shifted from the middle position of electric fuse part 10a, and, more concretely, are formed in the position distant from via 10e and near via 10d. A plurality of projecting portions 20f are formed in the position shifted from the middle position of electric fuse part 20a, and, more concretely, are formed in the position distant from via 20d and near 20e. That is, projecting portions 10f and projecting portions 20f are arranged in the shape of zigzag.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: October 5, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Kazushi Kono, Takeshi Iwamoto, Hisayuki Kato, Shigeki Obayashi, Toshiaki Yonezu
  • Publication number: 20100246236
    Abstract: A metal supplying an N well voltage is provided in a first metal interconnection layer. The metal is electrically coupled to an active layer provided in an N well region by shared contacts so that the N well voltage is supplied to the N well region. A metal supplying a P well voltage is provided in a third metal interconnection layer. The metal supplying the N well voltage is formed using a metal in the first metal interconnection layer and thus does not require a piling region to the underlayer, and only a piling region to the underlayer of the metal for the P well voltage needs to be secured. Therefore, the length in the Y direction of a power feed cell can be reduced thereby reducing the layout area of the power feed cell.
    Type: Application
    Filed: June 9, 2010
    Publication date: September 30, 2010
    Applicant: Renesas Technology Corp.
    Inventor: Yuichiro ISHII
  • Patent number: 7805562
    Abstract: A microcomputer capable of on-board programming of dedicated user communication protocols without requiring a serial interface on the mounted board, and that will not destroy the dedicated user communication protocol code even if the system runs out of control. A user boot mat other than a user mat is provided for programming control programs for the user in the on-chip non-volatile memory of the microcomputer. The user boot mat serves as the mat for programming the dedicated user communication protocol and also provides a user boot mode for running the program. The user boot mat cannot program or erase in this user boot mode. By separating the user boot mat and user mat, an interface capable of programming and erasing the user-specified programming can be achieved without having to program a dedicated communication protocol on the user mat.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: September 28, 2010
    Assignees: Renesas Technology Corp., Hitachi Hokkai Semiconductor, Ltd.
    Inventors: Naoki Yada, Eiichi Ishikawa
  • Patent number: 7804573
    Abstract: A liquid crystal display device comprises a liquid crystal display panel and a semiconductor integrated circuit for driving and controlling the liquid crystal display panel. The number of input/output wires connected to I/O terminals (bonding pads) of the semiconductor integrated circuit is reduced so as to simplify wiring patterns of the I/O wires, whereby degrees of freedom in arranging the I/O wiring patterns are enhanced. The panel has a pair of insulating substrate, and the semiconductor integrated circuit is mounted on one of the paired substrates. The semiconductor integrated circuit has a mode terminal which is fixed to a power supply potential or to a reference potential during operation of the integrated circuit, and power supply dummy terminals connected to the power supply potential or reference potential inside the semiconductor integrated circuit. The wiring patterns formed on the paired insulating substrates connect the mode terminal to the power supply dummy terminals.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: September 28, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Kazuhisa Higuchi, Yoshikazu Yokota, Kimihiko Sugiyama
  • Patent number: 7804132
    Abstract: A gate electrode is provided such that both ends thereof in a gate width direction are projected from an active region in plane view. Partial trench isolation insulation films are provided in a surface of an SOI substrate corresponding to lower parts of the both ends, and body contact regions are provided in the surface of the SOI substrate outside the both ends of the gate electrode in the gate width direction so as to be adjacent to the respective partial trench isolation insulation films. The body contact region and a body region are electrically connected through an SOI layer (well region) under the partial trench isolation insulation film. In addition, a source tie region in which P type impurity is doped in a relatively high concentration is provided in the surface of a source region in the vicinity of the center of the gate electrode in the gate width direction.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: September 28, 2010
    Assignee: Renesas Technology Corp.
    Inventor: Yuichi Hirano