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Dielectric properties of liquid crystals for display and sensor applications
Author(s) -
Belyaev Victor V.,
Chausov Denis N.,
Kurilov Alexander D.,
Rybakov Dmitriy O.,
Solomatin Alexey S.,
Murauski Anatoli A.,
Muravsky Alexander A.,
Chigrinov Vladimir G.,
Fan Fan
Publication year - 2015
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.352
Subject(s) - liquid crystal , materials science , dielectric , permittivity , relaxation (psychology) , atmospheric temperature range , liquid crystal display , capacitor , electric field , dielectric permittivity , range (aeronautics) , optoelectronics , condensed matter physics , optics , voltage , composite material , physics , thermodynamics , social psychology , psychology , quantum mechanics
Temperature dependence of dielectric properties of nematic liquid crystals are investigated for two types of devices: wide temperature range liquid crystal (LC) displays and capacitor temperature sensor. Both real and imaginary components of the dielectric constant have been measured in wide frequency and temperature range including t < 0 °C as well as versus the angle θ between the directions of both magnetic and electric field in the measuring scheme. Some physical parameters of the nematic LC (NLC) dielectric relaxation have been determined. Effective values of the LC dielectric permittivity with different values of the LC pretilt angles in different parts of a complex LC cell have been simulated.