Patents by Inventor Hisanobu Ishiyama

Hisanobu Ishiyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8547773
    Abstract: An integrated circuit device includes at least one data driver block for driving data lines, a plurality of control transistors TC1 and TC2, each of the control transistors being provided corresponding to each output line of the data driver block and controlled by using a common control signal, and a pad arrangement region in which data driver pads P1 and P2 for electrically connecting the data lines and the output lines QL1 and QL2 of the data driver block are disposed. The control transistors TC1 and TC2 are disposed in the pad arrangement region.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: October 1, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Takayuki Saiki, Satoru Ito, Masahiko Moriguchi, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Kazuhiro Maekawa
  • Patent number: 8547722
    Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN, a first interface region disposed along a fourth side and on the D2 side of the first to Nth circuit blocks CB1 to CBN, and a second interface region disposed along a second side and on the D4 side of the first to Nth circuit blocks CB1 to CBN. A local line LLG formed using a wiring layer lower than an Ith layer is provided between the adjacent circuit blocks as at least one of a signal line and a power supply line. Global lines GLG and GLD formed using the Ith or higher wiring layer are provided along the direction D1 over the circuit block disposed between the nonadjacent circuit blocks as at least one of a signal line and a power supply line.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 1, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
  • Patent number: 8310478
    Abstract: An integrated circuit device includes first and second transistors NTr1 and PTr1 push-pull connected between first and second power supply lines and outputting a voltage of one of the first and second power supply lines to a connection node ND by a charge-pump operation, and a pad PD electrically connected with the connection node ND and electrically connected with a flying capacitor, to which a given voltage is applied at one end, at the other end of the flying capacitor. The pad PD is disposed in an upper layer of at least one of the first and second transistors NTr1 and PTr1 so that the pad PD overlaps part or the entirety of at least one of the first and second transistors NTr1 and PTr1.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 13, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Takayuki Saiki, Hiroyuki Takamiya
  • Patent number: 8188544
    Abstract: An integrated circuit device includes a pad PDx and an electrostatic discharge protection element ESDx formed in a rectangular region and electrically connected with the pad PDx. The pad PDx is disposed in an upper layer of the electrostatic discharge protection element ESDx so that an arrangement direction of the pads is parallel to a long side direction of the region in which the electrostatic discharge protection element ESDx is formed, and the pad PDx overlaps part or the entirety of the electrostatic discharge protection element ESDx.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: May 29, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Takayuki Saiki, Hiroyuki Takamiya
  • Publication number: 20120019566
    Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN, a first interface region disposed along a fourth side and on the D2 side of the first to Nth circuit blocks CB1 to CBN, and a second interface region disposed along a second side and on the D4 side of the first to Nth circuit blocks CB1 to CBN. A local line LLG formed using a wiring layer lower than an Ith layer is provided between the adjacent circuit blocks as at least one of a signal line and a power supply line. Global lines GLG and GLD formed using the Ith or higher wiring layer are provided along the direction D1 over the circuit block disposed between the nonadjacent circuit blocks as at least one of a signal line and a power supply line.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 26, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
  • Patent number: 8054710
    Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN, a first interface region disposed along a fourth side and on the D2 side of the first to Nth circuit blocks CB1 to CBN, and a second interface region disposed along a second side and on the D4 side of the first to Nth circuit blocks CB1 to CBN. A local line LLG formed using a wiring layer lower than an Ith layer is provided between the adjacent circuit blocks as at least one of a signal line and a power supply line. Global lines GLG and GLD formed using the Ith or higher wiring layer are provided along the direction D1 over the circuit block disposed between the nonadjacent circuit blocks as at least one of a signal line and a power supply line.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 8, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
  • Patent number: 7956833
    Abstract: A display driver includes a common electrode charge storage switch provided between a first capacitor element connection node to which one end of a first capacitor element can be connected and a common electrode voltage output node to which a voltage of a common electrode opposite to a pixel electrode of an electro-optical device through an electro-optical material is supplied, a source charge storage switch provided between a second capacitor element connection node to which one end of a second capacitor element can be connected and a source voltage output node to which a voltage of a source line of the electro-optical device is supplied, and a node short circuit switch provided between the common electrode voltage output node and the source voltage output node.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: June 7, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Ito, Hisanobu Ishiyama, Motoaki Nishimura, Kazuhiro Maekawa, Haruo Kamijo, Hironori Kobayashi, Isamu Moriya
  • Publication number: 20110128274
    Abstract: An integrated circuit device includes first and second transistors NTr1 and PTr1 push-pull connected between first and second power supply lines and outputting a voltage of one of the first and second power supply lines to a connection node ND by a charge-pump operation, and a pad PD electrically connected with the connection node ND and electrically connected with a flying capacitor, to which a given voltage is applied at one end, at the other end of the flying capacitor. The pad PD is disposed in an upper layer of at least one of the first and second transistors NTr1 and PTr1 so that the pad PD overlaps part or the entirety of at least one of the first and second transistors NTr1 and PTr1.
    Type: Application
    Filed: February 8, 2011
    Publication date: June 2, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru ITO, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Takayuki Saiki, Hiroyuki Takamiya
  • Patent number: 7880530
    Abstract: A power supply circuit which boosts a given voltage to generate one or more power supply voltages includes a charge-pump control circuit including switching elements for generating a boost voltage by a charge-pump operation using charge stored in a flying capacitor, a soft-start circuit which prevents a rush current toward the flying capacitor, and a power supply generation circuit which is connected with a stabilization capacitor and generates a power supply voltage using the boost voltage as a power supply. After the power supply generation circuit has been turned ON in a state in which the charge-pump control circuit generates the boost voltage by the charge-pump operation, the switching elements are turned OFF, and the soft-start circuit generates the boost voltage by a charge-pump operation.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: February 1, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Hisanobu Ishiyama
  • Patent number: 7764278
    Abstract: An integrated circuit device including first to Nth circuit blocks CB1 to CBN disposed along a first direction D1, when the first direction D1 is a direction from a first side of the integrated circuit device toward a third side which is opposite to the first side, the first side being a short side, and when a second direction D2 is a direction from a second side of the integrated circuit device toward a fourth side which is opposite to the second side, the second side being a long side. The circuit blocks CB1 to CBN include at least one memory block MB which stores image data, and at least one data driver block DB which drives data lines. The memory block MB and the data driver block DB are disposed adjacent to each other along the first direction D1.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: July 27, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Katsuhiko Maki
  • Patent number: 7755587
    Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN disposed along a direction D1 when a direction from a first side which is a short side of the integrated circuit device toward a third side opposite to the first side is a direction D1 and a direction from a second side which is a long side of the integrated circuit device toward a fourth side opposite to the second side is a direction D2. At least one of the circuit blocks on both ends of the circuit blocks CB1 to CBN is a scan driver block for driving a scan line. Or, the scan driver block SB is disposed along the direction D1 on the side of the first to Nth circuit blocks in the direction D2.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 13, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Patent number: 7567479
    Abstract: An integrated circuit device includes: first to Nth circuit blocks CB1 to CBN disposed along a direction D1, the circuit blocks CB1 to CBN includes a data driver block DB. A data driver DR included in the data driver block DB includes Q driver cells DRC1 to DRCQ arranged along a direction D2, each of the driver cells outputting a data signal corresponding to image data for one pixel. When a width of each of the driver cells DRC1 to DRCQ in the direction D2 is WD, each of the circuit blocks CB1 to CBN has a width WB in the direction D2 of “Q×WD?WB<(Q+1)×WD”.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: July 28, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Patent number: 7564734
    Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN disposed along a direction D1, a first interface region provided on the D2 side of the circuit blocks CB1 to CBN, and a second interface region provided on the D4 side of the circuit blocks CB1 to CBN. The circuit blocks CB1 to CBN include a data driver block DB and a circuit block other than the data driver block DB. When the widths of the first interface region, the circuit blocks CB1 to CBN, and the second interface region in the direction D2 are respectively W1, WB, and W2, the integrated circuit device has a width W in the direction D2 of “W1+WB+W2?W<W1+2×WB+W2”.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: July 21, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Patent number: 7561478
    Abstract: An integrated circuit device including first to Nth circuit blocks CB1 to CBN disposed along a first direction D1, when the first direction D1 is a direction from a first side of the integrated circuit device toward a third side which is opposite to the first side, the first side being a short side, and when a second direction D2 is a direction from a second side of the integrated circuit device toward a fourth side which is opposite to the second side, the second side being a long side. The circuit blocks CB1 to CBN include a logic circuit block LB, a grayscale voltage generation circuit block GB, data driver blocks DB1 to DB4, and a power supply circuit block PB. The data driver blocks DB1 to DB4 are disposed between the logic circuit block LB and the grayscale voltage generation circuit block GB, and the power supply circuit block PB.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: July 14, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Katsuhiko Maki
  • Patent number: 7522441
    Abstract: An integrated circuit device including first to Nth circuit blocks CB1 to CBN disposed along a first direction D1, when the first direction D1 is a direction from a first side of the integrated circuit device toward a third side which is opposite to the first side, the first side being a short side, and when a second direction D2 is a direction from a second side of the integrated circuit device toward a fourth side which is opposite to the second side, the second side being a long side. The circuit blocks CB1 to CBN include a high-speed interface circuit block HB which transfers data through a serial bus using differential signals, and a circuit block other than HB. The high-speed interface circuit block HB is disposed as an Mth circuit block CBM (2?M?N?1) of the circuit blocks CB1 to CBN.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: April 21, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Patent number: 7495988
    Abstract: An integrated circuit device having a display memory, wherein a plurality of first power supply interconnects VSSL for supplying a first power supply voltage VSS to memory cells MC are formed in a metal interconnect layer in which a plurality of wordlines WL are formed; and wherein a plurality of second power supply interconnects VDDL for supplying a second power supply voltage VDD to the memory cells are formed in another metal interconnect layer in which a plurality of bitlines BL are formed, the second power supply voltage VDD being higher than the first power supply voltage VSS. A plurality of bitline protection interconnects SHD are formed in a layer above the bitlines BL, and each of the bitline protection interconnects SHD at least partially covers one of the bitlines BL in a plan view.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: February 24, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa
  • Patent number: 7492659
    Abstract: An integrated circuit device having a display memory, wherein a plurality of first power supply interconnects for supplying a first power supply voltage to a plurality of memory cells are provided in a metal interconnect layer in which a plurality of bitlines are formed; wherein a second power supply interconnect for supplying a second power supply voltage to the memory cells is provided in a metal interconnect layer in which a plurality of wordlines are formed, the second power supply voltage being higher than the first power supply voltage; wherein a plurality of bitline protection interconnects are formed in a layer above the bitlines, each of the bitline protection interconnects at least partially covering one of the bitlines in a plan view; and wherein a third power supply interconnect for supplying a third power supply voltage to circuits of the integrated circuit device other than the display memory is provided in a layer above the bitline protection interconnects, the third power supply voltage being
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: February 17, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa
  • Patent number: 7411804
    Abstract: An integrated circuit device, including first to Nth circuit blocks CB1 to CBN disposed along a first direction D1, when the first direction D1 is a direction from a first side of the integrated circuit device toward a third side which is opposite to the first side, the first side being a short side, and when a second direction D2 is a direction from a second side of the integrated circuit device toward a fourth side which is opposite to the second side, the second side being a long side. The circuit blocks CB1 to CBN include at least one memory block MB which stores image data, and at least one data driver block DB which drives data lines; and the memory block MB includes a memory cell array, a row address decoder RD, and a sense amplifier block SAB.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: August 12, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Publication number: 20080116933
    Abstract: An integrated circuit device includes data pads, I/O circuits, each of the I/O circuits respectively receiving a CMOS level data signal from one of the data pads, a high-speed I/F circuit block that includes a physical layer circuit and transfers data through a serial bus using differential signals, and a logic circuit block that receives signals from the high-speed I/F circuit block and the I/O circuits. At least some of the data pads are set to be shared pads, and first and second signals forming the differential signals are input to a receiver circuit of the physical layer circuit through the shared pads.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 22, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hisanobu Ishiyama
  • Publication number: 20080094328
    Abstract: A liquid crystal device having a display section provided with a plurality of X electrodes and a plurality of Y electrodes, a master X driver IC and a slave X driver IC for driving the X electrodes, and a Y driver for driving the Y electrodes. The master IC has a display control signal generation section which generates a display control signal based on a signal from an external MPU and an output terminal (or input/output terminal) which outputs the display control signal. Each of the master IC and slave IC has an input terminal for receiving the display control signal from the master IC through an external wiring. This liquid crystal device can eliminate a luminance difference within the display screen driven by the master IC and the slave IC.
    Type: Application
    Filed: November 8, 2007
    Publication date: April 24, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hisanobu ISHIYAMA