&lt;title&gt;Dynamics of the domain wall motion in FLC display cell&lt;/title&gt;

“…The evolution of this process results in the formation of transient domains, 13,15 i.e., small regions with some dipole moments oriented opposite to the E direction that divides regions with dipoles oriented along the E direction. The transient domains represent a coupled state of two 180°d omain walls of different signs.…”

Section: Experimental Conditionsmentioning

confidence: 99%

Speckle‐noise suppression due to a single ferroelectric liquid‐crystal cell

Andreev¹,

Andreeva²,

Kompanets³

et al. 2009

J Soc Info Display

View full text Add to dashboard Cite

show abstract

“…For example, display cells with novel helix FLC materials developed in LPI showed for the first time the physical gray scale in thin (0.9-1.7 μm) layers as well as ultra-low control voltage and high modulation frequency simultaneously. [1][2][3] The optical response was studied for the case when portion unwinding of the helix (without its pitch change) arises from the interaction of FLC molecules with substrates, and domain walls motion results in the director reorientation. The dependence of light transmittance of FLC cells on control voltage for different frequencies is practically hysteresis-free and looks like in NLC.…”

Section: Introductionmentioning

confidence: 99%

“…Dependences of the light transmission of the electrooptical cell with FLC (composition HF-32C) of 1.7 μm thickness on the control voltage at 5 kHz frequency for increasing(1) and decreasing the voltage(2).…”

mentioning

confidence: 99%

Optical response of helix‐free FLC: Continuous gray scale, fastest response, and lowest control voltage

et al. 2014

View full text Add to dashboard Cite

Electro‐optical response of a display cells with novel helix‐free FLC (differently, compensated helix ferroelectric—CHF) is considered. Predominance of the shear viscosity in the soliton mode of FLC director reorientation leads to weakening the temperature dependence of the response time. Increasing the electric field frequency expands this temperature interval, and it is 15°C… 45°C for the frequency about 3 kHz at ±1.5 V in a display cell with FLC viscosity of 0.7 P. Increasing the rotational viscosity up to 1.0 P provides the increase of speed ability due to Maxwell's nature of energy dissipation. The optical response time of 24 µs and light modulation frequency of 7 kHz were achieved at the amplitude of control voltage pulses ±1.5 V. Thus, like NLC based cells, the experimental samples of CHF based display cells at the same (or even lower) value of voltage and electric field tension (1–2 V/µm) show the continuous gray scale and hysteresis‐free modulation characteristic (up to 5 kHz) but can provide 40–50 times (!) higher speed. These break‐through results characterize CHF as the most high‐speed materials for future 3D displays and displays using field sequential color technique, including FLCoS and TFT addressed, as well as displays with new functional properties.

show abstract

“…Display cells with novel helix FLC materials developed at the Lebedev Physical Institute showed for the first time the physical gray scale in thin (0.9-1.7 μm) layers as well as ultra-low control voltage and high modulation frequency simultaneously [1][2][3]. The electrooptical response was studied for the case when portion unwinding of the helix (without its pitch change) arises from the interaction of FLC molecules with substrates, and domain walls motion results in the director reorientation.…”

Section: Introductionmentioning

confidence: 99%