Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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 220.degree. to 260.degree.. Predetermined angles .theta., .phi. and .phi. are selected from the ranges of -130.degree. to -75 , -20.degree. to -60.degree. and -15.degree. to -45.degree., respectively.








 
 
  Recently Added Patents
Image forming apparatus assembled with a fixing member and a pressing member
Terminal device, system and computer readable medium
Flat panel display device and method of fabricating the same
Disk drive
Bamboo scrimber and manufacturing method thereof
Method and apparatus for exercise monitoring combining exercise monitoring and visual data with wireless internet connectivity
Systems and methods for determining muscle force through dynamic gain optimization of a muscle PID controller for designing a replacement prosthetic joint
  Randomly Featured Patents
Collapsible camper top for pick-up trucks
Drawout switchgear with blow-out prevention device
Severe dog leg swivel for tubing conveyed perforating
Phase gap analysis for scanning interferometry
Method and apparatus for adding a database partition
Diode-pumped laser with improved pumping system
Expander lubrication in vapour power systems
Anatomically correct bicycle seat
Measuring apparatus with readout display
Gasoline hydrodesulfurization and membrane unit to reduce mercaptan type sulfur