Patents Examined by Vincent F. Kovalick
  • Display apparatus
    Patent number: 5815133
    Abstract: A display apparatus includes a display panel having a matrix structure formed by a scan electrode group and a data electrode group, a scan electrode drive unit for operating the scan electrode group, a data electrode drive unit for operating the data electrode group, and a switching unit for switching on/off the electrical connection between a drive voltage generating unit for supplying drive voltage to the drive unit and a power supply source for supplying power to the drive voltage generating unit.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: September 29, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Tsuboyama, Hiroyuki Yokomizo, Mitsuo Iwayama, Kazunori Katakura