2AA02 BTN-LCセルの双安定性に与える各種パラメータの影響

概要

論文の詳細を見る
The experimental investigation has been made for the influences of such parameters as the cell thickness d, the factor d/P_0, the pretilt angle, the wave form of applied voltage, and temperature on the bistability in the BTN (bistable twisted nematic) liquid crystal cell with the twisted angle of 180° as the initial state. The occurrence of bistability was confirmed in the range 0.5 < d/P_0 < 0.75. The bisstability was evaluated by using the memory factor. As a result, it was known that the memory factor is independent of the ratio d/P_0, however, it decreases with the increase of cell thickness d. From the observation with art optical microscope, it was confirmed that the degradation of memory is governed by the movement of the disclination separating the 180° twisted state and the 0° or 360° twisted states. As the temperature was raised, the memory factor was abruptly degraded above a certain temperature at which the d/P_0 ratio is taken out the range 0.5 < d/P_0 < 0.75.
日本液晶学会の論文
1997-09-24