Patents Represented by Law Firm Rader, Fishma&Grauer
  • Patent number: 6597425
    Abstract: There is provided a liquid crystal display device in which film thickness irregularities and rubbing irregularities of orientation films are minimized in which superior image quality is provided even when columnar spacers are disposed therein. The liquid crystal display device has a structure in which a liquid crystal substance is sandwiched between a pair of substrates facing each other with the space therebetween controlled to a specific value by a plurality of the columnar spacers independent from each other, wherein the placement density of the columnar spacers is 100 to 2000/mm2, and the sectional area of the columnar spacers is 1 to 100 &mgr;m2.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: July 22, 2003
    Assignee: Sony Corporation
    Inventors: Hisashi Kadota, Hirohide Fukumoto, Hiromi Fukumori
  • Patent number: D433410
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: November 7, 2000
    Assignee: Sony Corporation
    Inventor: Yozo Matsuzaka