Patents by Inventor Takehiro Takayanagi

Takehiro Takayanagi 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: 8228677
    Abstract: A second output wiring and a third output wiring enter into a chip mounting portion while coming across a second side and a third side of the chip mounting portion. The other end portions of the second output wiring and the third output wiring enter into the chip mounting portion are bent toward a fourth side of the chip mounting portion, and are connected to an output pad and an output pad provided along a fourth side of the semiconductor chip. An input wiring extends along the fourth side of the chip mounting portion, is bent from a midstream to enter into the chip mounting portion while coming across the fourth side of the chip mounting portion, and is connected to an input pad provided along the fourth side of the semiconductor chip.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: July 24, 2012
    Assignee: Lapis Semiconductor Co., Ltd.
    Inventors: Daisuke Kunimatsu, Takehiro Takayanagi
  • Publication number: 20090231823
    Abstract: A second output wiring and a third output wiring enter into a chip mounting portion while coming across a second side and a third side of the chip mounting portion. The other end portions of the second output wiring and the third output wiring enter into the chip mounting portion are bent toward a fourth side of the chip mounting portion, and are connected to an output pad and an output pad provided along a fourth side of the semiconductor chip. An input wiring extends along the fourth side of the chip mounting portion, is bent from a midstream to enter into the chip mounting portion while coming across the fourth side of the chip mounting portion, and is connected to an input pad provided along the fourth side of the semiconductor chip.
    Type: Application
    Filed: February 19, 2009
    Publication date: September 17, 2009
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventors: Daisuke Kunimatsu, Takehiro Takayanagi
  • Publication number: 20080018574
    Abstract: A circuit for driving a liquid crystal display includes decoders for receiving input data to display, and output amplifiers correspondingly connected to the decoders for selectively driving display cells. In each output amplifier, the gate electrodes of a first transistor forming one input of a differential amplifier and a second transistor larger than the first transistor are selectively connected or disconnected when input data changes logical state. The drain electrodes of a third transistor forming the other input of the differential amplifier and a fourth transistor larger than the third transistor are selectively connected or disconnected when the input data changes logical state. The differential amplifier output is selectively fed back to the second transistor to charge or discharge the second transistor. Delay on the output of the decoders is reduced to thereby minimize delay on the output of the output amplifiers.
    Type: Application
    Filed: July 17, 2007
    Publication date: January 24, 2008
    Inventors: Takehiro Takayanagi, Takeshi Nosaka
  • Patent number: 5675278
    Abstract: An output circuit of a level shifter or an operational amplifier which converts input signal voltages to different voltage levels. A pMOS transistor PT.sub.2 and nMOS transistor NT.sub.2 connected in series between the power source and ground constitute the output node ND.sub.12. A Wilson mirror is made of pMOS transistors PT.sub.3 -PT.sub.6. An nMOS transistor NT.sub.3 induces a current flow in the current mirror, and an nMOS transistor NT.sub.1 connected between the current output node ND.sub.1 of the current mirror and ground. The gate of pMOS transistor PT.sub.2 is connected to the current output node ND.sub.1, and the gates of nMOS transistor NT.sub.1 and nMOS transistors NT.sub.2 and NT.sub.3 are connected to the input line of signals IN and XIN, which are 180.degree. out of phases.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: October 7, 1997
    Assignee: Texas Instruments Incorporated/Hiji High-Tech Co., Ltd.
    Inventors: Shinichi Tanaka, Takehiro Takayanagi, Yasuhisa Uchida