Effect of Driving Frequency on the EL Characteristics of Thick Ceramic Insulating Type TFEL Devices Using Y2O3-Based Phosphor Emitting Layer
Summary :
The driving frequency dependence of EL characteristics were investigated in thick ceramic insulating type thin-film electroluminescent (TFEL) devices with various Mn-activated Y2O3-based phosphor thin-film emitting layers driven by a sinusoidal wave voltage. High luminous efficiencies of approximately 10 and 1 lm/W were obtained in the TFEL devices driven at 60 Hz and 1 kHz, respectively. The difference in luminous efficiency was mainly caused by the increase of input power in 1 kHz-driven-devices resulting from a dielectric loss of a thick BaTiO3 ceramic sheet used as the insulating layer. The correlation between the sound emission from the devices and the effective power consumed in the devices was found with variations in both the applied voltage and the frequency. The higher input power of the 1 kHz-driven-device may be attributable to sound emissions resulting from the piezo-electricity of BaTiO3 ceramics.
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- IEICE TRANSACTIONS on Electronics Vol.E87-C No.11 pp.1970-1974
- Publication Date
- 2004/11/01
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- Special Section INVITED PAPER (Special Section on Electronic Displays)
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Toshihiro MIYATA, Yasuyuki SUZUKI, Kazuhiko IHARA, Tadatsugu MINAMI, "Effect of Driving Frequency on the EL Characteristics of Thick Ceramic Insulating Type TFEL Devices Using Y2O3-Based Phosphor Emitting Layer" in IEICE TRANSACTIONS on Electronics,
vol. E87-C, no. 11, pp. 1970-1974, November 2004, doi: .
Abstract: The driving frequency dependence of EL characteristics were investigated in thick ceramic insulating type thin-film electroluminescent (TFEL) devices with various Mn-activated Y2O3-based phosphor thin-film emitting layers driven by a sinusoidal wave voltage. High luminous efficiencies of approximately 10 and 1 lm/W were obtained in the TFEL devices driven at 60 Hz and 1 kHz, respectively. The difference in luminous efficiency was mainly caused by the increase of input power in 1 kHz-driven-devices resulting from a dielectric loss of a thick BaTiO3 ceramic sheet used as the insulating layer. The correlation between the sound emission from the devices and the effective power consumed in the devices was found with variations in both the applied voltage and the frequency. The higher input power of the 1 kHz-driven-device may be attributable to sound emissions resulting from the piezo-electricity of BaTiO3 ceramics.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e87-c_11_1970/_p
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@ARTICLE{e87-c_11_1970,
author={Toshihiro MIYATA, Yasuyuki SUZUKI, Kazuhiko IHARA, Tadatsugu MINAMI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Effect of Driving Frequency on the EL Characteristics of Thick Ceramic Insulating Type TFEL Devices Using Y2O3-Based Phosphor Emitting Layer},
year={2004},
volume={E87-C},
number={11},
pages={1970-1974},
abstract={The driving frequency dependence of EL characteristics were investigated in thick ceramic insulating type thin-film electroluminescent (TFEL) devices with various Mn-activated Y2O3-based phosphor thin-film emitting layers driven by a sinusoidal wave voltage. High luminous efficiencies of approximately 10 and 1 lm/W were obtained in the TFEL devices driven at 60 Hz and 1 kHz, respectively. The difference in luminous efficiency was mainly caused by the increase of input power in 1 kHz-driven-devices resulting from a dielectric loss of a thick BaTiO3 ceramic sheet used as the insulating layer. The correlation between the sound emission from the devices and the effective power consumed in the devices was found with variations in both the applied voltage and the frequency. The higher input power of the 1 kHz-driven-device may be attributable to sound emissions resulting from the piezo-electricity of BaTiO3 ceramics.},
keywords={},
doi={},
ISSN={},
month={November},}
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TY - JOUR
TI - Effect of Driving Frequency on the EL Characteristics of Thick Ceramic Insulating Type TFEL Devices Using Y2O3-Based Phosphor Emitting Layer
T2 - IEICE TRANSACTIONS on Electronics
SP - 1970
EP - 1974
AU - Toshihiro MIYATA
AU - Yasuyuki SUZUKI
AU - Kazuhiko IHARA
AU - Tadatsugu MINAMI
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E87-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2004
AB - The driving frequency dependence of EL characteristics were investigated in thick ceramic insulating type thin-film electroluminescent (TFEL) devices with various Mn-activated Y2O3-based phosphor thin-film emitting layers driven by a sinusoidal wave voltage. High luminous efficiencies of approximately 10 and 1 lm/W were obtained in the TFEL devices driven at 60 Hz and 1 kHz, respectively. The difference in luminous efficiency was mainly caused by the increase of input power in 1 kHz-driven-devices resulting from a dielectric loss of a thick BaTiO3 ceramic sheet used as the insulating layer. The correlation between the sound emission from the devices and the effective power consumed in the devices was found with variations in both the applied voltage and the frequency. The higher input power of the 1 kHz-driven-device may be attributable to sound emissions resulting from the piezo-electricity of BaTiO3 ceramics.
ER -
English
