Patents Assigned to Renesas Technology
  • Patent number: 7343445
    Abstract: A memory card is provided with a transfer control circuit, a write control circuit and a judging circuit. The transfer control circuit outputs a transfer flag signal during the data transfer. The write control circuit outputs an internal busy signal during the data write operation. The judging circuit outputs a transfer interruption signal when a card selection signal of the host is negated during the input of the transfer flat signal and also outputs a suspension signal when the card selection signal is negated during the input of the internal busy signal. A CPU invalidates the data being transfer to interrupt the transfer process upon reception of the transfer interruption signal and completes, upon reception of the suspension signal, the process being executed and stays in the waiting condition.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: March 11, 2008
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Kunihiro Katayama, Motoki Kanamori, Atsushi Shikata, Hidefumi Oodate, Atsushi Shiraishi
  • Patent number: 7342267
    Abstract: A semiconductor device, wherein a first metallic member is bonded to a first electrode of a semiconductor element via a first metallic body containing a first precious metal, and a second metallic member is bonded to a second electrode via a second metallic body containing a second precious metal.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: March 11, 2008
    Assignees: Renesas Technology Corp., Hitachi Tohbu Semiconductor, Ltd.
    Inventors: Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii, Toshinori Hirashima, Yasushi Takahashi, Toshiyuki Hata, Hiroshi Sato, Keiichi Ookawa
  • Patent number: 7342562
    Abstract: By implementing reduction in power of common electrode voltages applied from a power source of a liquid crystal drive device to common electrode interconnects of a liquid crystal display panel, respectively, reduction in power consumption of the liquid crystal display panel as a whole is attained. A VCOM operation waveform in a charging process from a second voltage VCOML to a first voltage VCOMH shows that a charging current Icha represents the sum of a charging current from VCOML to a reference voltage VCI, Icha1=Cp (VCI?VCOML)/?t, and a charging current from the reference voltage VCI to the first voltage VCOMH, Icha2=Cp (VCOMH?VCI)/?t. Accordingly, power consumed by Icha1 is the reference voltage VCI×Icha1, and power consumed by Icha2 is VCI×Icha2×2.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: March 11, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Yasushi Kawase, Takesada Akiba, Kazuya Endo, Goro Sakamaki
  • Patent number: 7342391
    Abstract: In a driver circuit constructing a switching power supply device that switches power transistors passing a current through a coil by a PWM mode, a current detection transistor, which is smaller in size than the low-potential side power transistor, and a current detection resistor are provided in parallel to the low-potential side power transistor. The same control voltage as the power transistor is applied to the control terminal of the current detection transistor. An operational amplifier is formed, that has the potential of the connection node between the current detection transistor and the current detection resistor applied to its inverse input terminal and a feedback loop, so as to make a pair of input terminals of the operational amplifier be at the same potential. A signal produced by the current detection resistor is thus outputted as a current detection signal.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: March 11, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Koji Tateno, Ryotaro Kudo, Shin Chiba, Kyoichi Hosokawa, Toshio Nagasawa
  • Patent number: 7342302
    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: July 20, 2006
    Date of Patent: March 11, 2008
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Taku Kanaoka, Masashi Sahara, Yoshio Fukayama, Yutaro Ebata, Kazuhisa Higuchi, Koji Fujishima
  • Patent number: 7339833
    Abstract: Using charges accumulated in a capacitance element connected to a drain side node of a memory cell, data is written in accordance with source side injection method. The capacitance value of the capacitance element is changed in accordance with the value of write data. A non-volatile semiconductor memory device allowing writing of multi-valued data at high speed with high precision is achieved.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Yusuke Jono, Takashi Kono, Tadaaki Yamauchi
  • Patent number: 7339831
    Abstract: Until the number of pulse application n reaches 12, as a first-half pulse, a pulse is set to have a width fixed to 2 ms, and its voltage is increased every time. As a latter-half pulse, the pulse is set to have a width fixed to 3 ms and the pulse voltage is increased every time until the maximum voltage is attained. After the maximum voltage is attained, first, the pulse of a width of 3 ms is applied twice, the pulse of a width of 4 ms with the maximum voltage is applied twice, and the pulse of a width of 5 ms with the maximum voltage is applied twice. Even after the maximum voltage is attained, change over time of a threshold voltage can be more linear. Thus, a non-volatile semiconductor memory device allowing efficient programming operation and erasing operation in a short period of time can be provided.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Hidenori Mitani, Fumihiko Nitta, Tadaaki Yamauchi, Taku Ogura
  • Patent number: 7339850
    Abstract: Each of a plurality of memory blocks arranged for 1 bit data is divided into two subarrays. A separate local data line is provided for each subarray and coupled to a sense amplifier via an isolation gate. A memory cell is selected in a selected subarray of a selected memory block, and a bit line of the selected memory cell is coupled to a corresponding local data line. Only a local data line of the selected subarray is coupled to the sense amplifier to perform a sense operation, and a global read data line is driven via a read driver in accordance with an output signal of the sense amplifier. A load of a sense node of the sense amplifier in a semiconductor memory device is reduced to implement high-speed reading of internal data.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventor: Chikayoshi Morishima
  • Patent number: 7339259
    Abstract: A semiconductor device has an improved mounting reliability and has external terminals formed by exposing portions of leads from a back surface of a resin sealing member. End portions on one side of the leads are fixed to a back surface of a semiconductor chip, and portions of the leads positioned outside the semiconductor chip are connected with electrodes formed on the semiconductor chip through wires.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Fujio Ito, Hiromichi Suzuki
  • Patent number: 7339238
    Abstract: It is an object to obtain a semiconductor device including a capacitance having a great Q-value. In an SOI substrate comprising a support substrate (165), a buried oxide film (166) and an SOI layer (171), an isolating oxide film 167 (167a to 167c) is selectively formed in an upper layer portion of the SOI layer (171) with a part of the SOI layer (171) remaining as a P? well region (169). Consequently, an isolation (partial isolation) structure is obtained. An N+ diffusion region (168) is formed in the SOI layer (171) between the isolating oxide films (167a) and (167b) and a P+ diffusion region (170) is formed in the SOI layer (171) between the isolating oxide films (167b) and (167c). Consequently, there is obtained a junction type variable capacitance (C23) having a PN junction surface of the P? well region (169) provided under the isolating oxide film (167b) and the N+ diffusion region (168).
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Shigenobu Maeda, Takashi Ipposhi, Yuuichi Hirano
  • Patent number: 7339236
    Abstract: The present invention provides a semiconductor technology capable of suppressing an increase in threshold voltage of a transistor and, also, improving a withstand voltage between a source region and a drain region. Source and drain regions of a p channel type MOS transistor are formed in an n? type semiconductor layer in an SOI substrate. In addition, an n type impurity region is formed in the semiconductor layer. The impurity region is formed over the entire bottom of the source region at a portion directly below this source region, and is also formed directly below the semiconductor layer between the source region and the drain region. A peak position of an impurity concentration in the impurity region is set below a lowest end of the source region at a portion directly below an upper surface of the semiconductor layer between the source region and the drain region.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Tetsuya Nitta, Yasunori Yamashita, Shinichiro Yanagi, Fumitoshi Yamamoto
  • Patent number: 7339221
    Abstract: A semiconductor device includes a silicon substrate having an active region, a memory transistor having a pair of source/drain regions and a gate electrode layer, a hard mask layer on the gate electrode layer having a plane pattern shape identical with that of the gate electrode layer, and plug conductive layers each electrically connected to each of the pair of source/drain regions. An extending direction of the active region is not perpendicular to that of the gate electrode layer, but is oblique. Upper surfaces of the hard mask layer and each of the plug conductive layers form substantially an identical plane. This can attain a semiconductor device allowing significant enlargement of a margin in a photolithographic process, suppression of an “aperture defect” as well as ensuring of a process tolerance of a “short” by decreasing a microloading effect, and decrease in a contact resistance, and a manufacturing method thereof.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventor: Shigeru Shiratake
  • Patent number: 7340232
    Abstract: The invention provides a receiving system and a transmitting system capable of decreasing an offset between differential signals and between quadrature signals and improving a manufacturing yield and a semiconductor integrated circuit device for processing a wireless communication signal having therein the systems. A receiving system includes: a local oscillator for generating an oscillation signal in a desired frequency; a 90-degree phase-shifting circuit for generating a signal by shifting a phase of the oscillation signal output from the local oscillator by 90 degrees; a first mixer for mixing one of differential reception signals with an output signal of the first 90-degree phase-shifting circuit and outputting frequency-converted differential signals; and a second mixer for mixing another one of the differential reception signals with an output signal of the local oscillator and outputting frequency-converted differential signals.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Motoki Murakami, Yutaka Igarashi, Akio Yamamoto, Isao Ikuta, Yoshiaki Harasawa
  • Patent number: 7340227
    Abstract: A wireless communication system uses a transmission power detection circuit. The transmission power detection circuit has excellent linearity of detection output for transmission output power and can obtain detection output not having temperature dependence. The transmission power detection circuit has a rectifying detection part that includes plural amplifiers connected in series and obtains detection output by taking out rectified outputs from emitters of input transistors of amplifiers of individual stages and synthesizing them. A compensation voltage generating circuit has a dummy amplifier having a construction similar to the amplifiers constituting the rectifying detection part and a coefficient circuit that changes output of the dummy amplifier at a specified ratio, and generates voltage for compensating temperature characteristics.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Daisuke Yoshimi, Akio Yamamoto, Yutaka Igarashi
  • Patent number: 7339261
    Abstract: A semiconductor device which permits reduction in the number of pins and in size thereof is provided.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Yoshihiko Shimanuki, Koji Tsuchiya
  • Patent number: 7339827
    Abstract: In connection with rise and fall of a word line bias, the present invention adopts a procedure such that a diffusion region voltage Vs on a memory transistor side is changed, and after the voltage Vs passes a certain intermediate value Vsx, a gate voltage Vmg of the memory transistor is changed. Alternatively, there is adopted a procedure such that the gate voltage Vmg of the memory transistor is changed, and after the voltage Vmg passes a certain intermediate value Vmgx, the diffusion layer voltage Vs on the memory transistor side is changed. The values of Vsx and Vmgx are determined from the magnitude of the electric field in a gate insulating film not causing FN tunneling electron injection that causes a change in threshold voltage and the magnitude of a potential barrier against holes not causing BTBT hot hole injection.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Kan Yasui, Digh Hisamoto, Toshihiro Tanaka, Takashi Yamaki
  • Patent number: 7339231
    Abstract: There is provided a technology capable of enhancing reliability in rewrite of storage information in a nonvolatile memory while checking an increase in area of a memory array thereof. With a memory array configuration, individual bit lines are connected to two memory cells sharing a source, and disposed at symmetrical positions, respectively, and two lengths of metal interconnections (the bit lines) are disposed with respect to a width in the direction of a channel width of a region occupied by one of the memory cells. In contrast, respective control gates of the memory cells corresponding to two word are rendered at an identical potential, and respective memory gates thereof are rendered at an identical potential, thereby disposing three lengths of metal interconnections (a control gate control line, memory gate control line, and common source line) with respect to a length of the regions occupied by the two memory cells in the direction of a channel length.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventor: Kozo Katayama
  • Publication number: 20080048707
    Abstract: The accuracy of effective channel width extraction in drain current method is improved. There are prepared a transistor with a wide channel width serving as a reference, and a transistor with a narrow channel width that becomes a candidate for extraction (step ST1.1). From the characteristic curve of a plane formed by mask channel width and source-drain conductance, there is extracted a virtual point at which the change of source-drain conductance is estimated to be approximately zero even if the gate overdrive is finely changed. Then, the value of function F is calculated which is defined by the difference between the change of the conductance at the coordinate of the virtual point and the product obtained by multiplying the conductance per unit width by the change of the mask channel width (step ST1.6). From a shift amount (?) which minimizes the standard deviation of the function F to be obtained (step ST1.
    Type: Application
    Filed: October 22, 2007
    Publication date: February 28, 2008
    Applicant: Renesas Technology Corp.
    Inventor: Kenji YAMAGUCHI
  • Publication number: 20080052497
    Abstract: In arithmetic/logic units (ALU) provided corresponding to entries, an MIMD instruction decoder generating a group of control signals in accordance with a Multiple Instruction Multiple Data (MIME) instruction and an MIMD register storing data designating the MIME instruction are provided, and an inter-ALU communication circuit is provided. The amount and direction of movement of the inter-ALU communication circuit are set by data bits stored in a movement data register. It is possible to execute data movement and arithmetic/logic operation with the amount of movement and operation instruction set individually for each ALU unit Therefore, in a Single Instruction-Multiple Data type processing device, Multiple Instruction-Multiple Data operation can be executed at high speed in a flexible manner.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 28, 2008
    Applicant: Renesas Technology Corp.
    Inventors: Toshinori Sueyoshi, Masahiro Iida, Mitsutaka Nakano, Fumiaki Senoue, Katsuya Mizumoto
  • Patent number: RE40139
    Abstract: A wafer having chamfered bent portions in the joint regions between the contour of the wafer and the cut-away portion of the wafer such as an orientation flatness. The chipping of the wafer can be prevented, and in coating the wafer with a photoresist, forming an epiaxially grown layer on the wafer, etc., films having desired characteristics can be provided on the surface of the wafer.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Hisashi Maejima, Hiroshi Nishizuka, Susumu Komoriya, Etuo Egashira