×

LIQUID CRYSTAL DISPLAY DEVICE

  • US 3,869,196 A
  • Filed: 01/09/1974
  • Issued: 03/04/1975
  • Est. Priority Date: 01/11/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. In a liquid crystal display device wherein liquid crystals in a cell formed of opposed glass plates rotate the plane of polarization of linearly polarized light through 90* in the absence of an electric field across said cell and which are nonrotatory in the presence of a sufficiently strong electric field, said cell having suitably disposed transparent conductive elements on the inner surfaces of said glass plates covering only part of said surfaces, said cell further having polarizer and analyzer members disposed with axes at right angles to each other exterior to either plate of said cell, the improvement wherein each of said polarizer and analyzer members comprises a polarizing film held firmly between inner and outer sheets of glass and said cell comprises the inner sheet of each of said polarizer and analyzer members.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×