Browsing by Author "Huang, Sheng-Miao"

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Fully Digital Driving Circuit for TFT LCD Using the Concept of Ramp-Stop
(2019-03-01)
Tai, Ya-Hsiang
;
Lin, Chi-Hao
;
Ho, Tsung-Hsuan
;
Huang, Yu-Sheng
;
Huang, Sheng-Miao
A fully digital driving circuit for thin-film transistor liquid crystal display can offer benefits, including less power consumption and a shortened design schedule. Using the pulsewidth signal to control the moment to stop the ramp voltage, the pixel voltage can be set accurately. In this paper, the possible issues of power consumption, device nonuniformity, and parasitic capacitance are well-studied to prove the feasibility and advantages of the digital driving method. It is prospectively expected to substitute for the conventional analog driving method in the future.
Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles
(2016-09)
Hsiao, Yu-Cheng
;
Huang, Sheng-Miao
;
Yeh, En-Rong
;
Lee, Wei
;
影像與生醫光電研究所
We report on the temperature dependence of dielectric properties of nematic liquid crystals impregnated with BaTiO3 (BTO) ferroelectric nanoparticles. The behavior of ion transport at low frequencies is discussed by means of dielectric spectroscopy, which allows the ionic concentration and the relaxation time of electrode polarization to be deduced. The experimental results imply that the ferroelectric nanopartides can not only increase the traveling time of ions between two electrodes but also suppress the buildup of the electric double layers. Verified by the voltage holding ratio of cells containing various contents of BTO nanoparticles, it is obvious that doping BTO into liquid crystals is a low-cost and easy way to improve the device performance. (C) 2015 Elsevier B.V. All rights reserved.
Temperature-dependent electrical and dielectric properties of nematic liquid crystals doped with ferroelectric particles
(2016-09-01)
Hsiao, Yu-Cheng
;
Huang, Sheng-Miao
;
Yeh, En-Rong
;
Lee, Wei
;
影像與生醫光電研究所
We report on the temperature dependence of dielectric properties of nematic liquid crystals impregnated with BaTiO3 (BTO) ferroelectric nanoparticles. The behavior of ion transport at low frequencies is discussed by means of dielectric spectroscopy, which allows the ionic concentration and the relaxation time of electrode polarization to be deduced. The experimental results imply that the ferroelectric nanopartides can not only increase the traveling time of ions between two electrodes but also suppress the buildup of the electric double layers. Verified by the voltage holding ratio of cells containing various contents of BTO nanoparticles, it is obvious that doping BTO into liquid crystals is a low-cost and easy way to improve the device performance. (C) 2015 Elsevier B.V. All rights reserved.