Resources Contact Us Home
Reflecting type liquid crystal display device

Image Number 10 for United States Patent #6429920.

An object of the invention is to obtain achromatic display with high contrast and high lightness. A reflection type liquid crystal display device of NB mode comprises a liquid crystal cell having an STN type liquid crystal layer; a first phase difference plate; a second phase difference plate; a polarizing plate, the first and second phase difference plates and polarizing plate being disposed on one surface of the liquid crystal cell in this order; and a reflecting layer disposed in the liquid crystal cell, the reflecting layer forming the other surface of the liquid crystal cell. The liquid crystal layer retardation .DELTA.nLC.dLC, the first phase difference plate retardation .DELTA.n1.d1 and the second phase difference plate retardation .DELTA.n2.d2 are selected from the ranges of 660 nm to 830 nm, 120 nm to 240 nm and 300 nm to 430 nm, respectively. A twist angle .chi. is selected from the range of to Predetermined angles .theta., .phi. and .phi. are selected from the ranges of to -75 , to and to, respectively.

  Recently Added Patents
Light-emitting device
Receiving security risk feedback from linked contacts due to a user's system actions and behaviors
Mobile terminal including stellar body watching hookup communications function
Color imaging device
Lookup front end packet input processor
Information processing using batch setting information
  Randomly Featured Patents
Method and device of compensating scattering light signals generated by light interaction with particles or biological cells moving in fluid currents, such as in flow cytometry
Undersea hydraulic coupling with hollow metal seal
Marine propulsion device including bearing head retention means
Device for inserting copy and exposure material layers into a device for the continual exposure of this material
Combined clock face and pendulum
Culinary utensil
Silver halide color photographic material containing sparingly water soluble epoxy compound and organic soluble polymer
Esters of p-hydroxyaniline mustard
Method and apparatus for securing a computer from malicious threats through generic remediation
Weighing device using a resonant mass-spring system