Photo-switchable bistable twisted nematic liquid crystal optical switch
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...
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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....
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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...
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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...
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A three-terminal bistable twisted nematic liquid crystal display has been demonstrated. This display makes use of a combination of strong in-plane electric fields and vertical electric field for switching between the f and the f1p twist states. The lifetimes of the two bistable twist states are infinite, which is a significant improvement over conventional bistable twisted nematic displays. © 2...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2013
ISSN: 1094-4087
DOI: 10.1364/oe.21.004361