Patents Represented by Attorney, Agent or Law Firm R. P. Tassinari
  • Liquid crystal display panel driving device
    Patent number: 6184855
    Abstract: An analog driver for a liquid crystal display has sample hold circuits and buffer amplifiers divided into one group for positive inputs and the other groups for negative inputs which buffer amplifiers are selected in accordance with a first and second control signals thereby reducing the power consumption by the driver of buffer amplifiers. Furthermore, when none of the buffer amplifiers are selected, the data lines are held at common voltage to reduce the consumed power by the buffer amplifiers.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: February 6, 2001
    Assignee: International Business Machines Corportion
    Inventors: Yoshinao Kobayashi, Akihiro Kuroda, Yoshitami Sakaguchi