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Physical interpretation of the characteristics of LCDs embedded with MgO and SiO 2 nanoparticles
Author(s) -
Kobayashi S.,
Saeki Y.,
Kodaira S.,
Takatoh K.,
Kineri T.,
Hoshi H.,
Toshima N.,
Sano S.
Publication year - 2008
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 - 10.1889/1.2966449
Subject(s) - materials science , nanoparticle , birefringence , rotational viscosity , liquid crystal display , voltage , threshold voltage , viscosity , dielectric , anisotropy , optoelectronics , nanotechnology , composite material , optics , electrical engineering , physics , engineering , transistor
— The electro‐optical characteristics of TN‐LCD and ECB‐LCD cells, both of which were embedded with of MgO and SiO 2 nanoparticles at a low concentration of about or below 1 wt.%, were investigated. The threshold voltage and operating voltage of these LCD cells were found to decrease by 5–16%, depending on the materials and the concentration of nanoparticles. Measurements of the physical properties of nanoparticle‐embedded NLCs, such as the order parameter, clearing point, birefringence, dielectric anisotropy, elastic constants, and rotational viscosity on the nanoparticle‐doped NLC sample cells, were performed. Through these measurements, it is shown that the decrease in the threshold voltage and the operating voltage may be attributed to the decrease in the order parameter by 10–30% due to the existence of these nanoparticles.