A MATHEMATICAL STUDY OF A BISTABLE NEMATIC LIQUID CRYSTAL DEVICE
نویسندگان
چکیده
منابع مشابه
New bistable twisted nematic liquid crystal displays
We have developed new bistable twisted nematic ~BTN! displays that operate between the 2p/2 and 3p/2 twist states and between the p/2 and 5p/2 twist states. Together with the ~0,2p! BTN, this forms a set of all possible transmittive BTNs. Experimentally, it was confirmed that several switching wave forms could be used to switch the BTN from one state to another. Voltages below 10 V are sufficie...
متن کاملEffect of azimuthal anchoring strength on stability in a bistable chiral splay nematic liquid crystal device.
The stabilization of the metastable 180 degrees twist state in a bistable chiral splay nematic liquid crystal device is studied. The stability of the metastable 180 degrees twist state is explained using the azimuthal anchoring strength, which is a function of the twist elastic constant and the cell gap. A stable 180 degrees twist state as well as the permanent retention time can be obtained by...
متن کاملOptimization of reflective bistable twisted nematic liquid crystal displays
The contrast ratio of reflective bistable twisted nematic displays are optimized by means of a parameter space approach. By plotting the contrast ratio as a function of the twist angle and thickness-birefringence product of the display, the regions where the display shows the best contrast ratio are clearly shown. Both the absolute reflectance and wavelength dispersion of two bistable twisted s...
متن کاملpÕ2 and 5pÕ2 twisted bistable nematic liquid crystal display
A p/2 and 5p/2 twist bistable nematic liquid crystal cell is optimized in optics by a parameter space approach. The cell possesses good contrast ratio, a preferable dDn value, a wide viewing angle, and black–white display. Three switching wave forms can be used to switch the cell between p/2 and 5p/2 twist states. Controlling the selection voltage amplitude can provide gray scales for the cell....
متن کاملDesign Optimized Bistable Twisted Nematic Liquid Crystal Display
The difference between the equilibrium and switching d/p ratio of a bistable twisted nematic ͑BTN͒ liquid crystal display is shown by computer simulation. It is clearly indicated that the optimized d/p ratio has to be determined by the switching rather than equilibrium d/p ratio. It is also shown that the switching d/p ratio is related not only to the pre-tilt angle, but also to liquid crystal vi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematical Models and Methods in Applied Sciences
سال: 2007
ISSN: 0218-2025,1793-6314
DOI: 10.1142/s0218202507002546