Flat panel light-emitting sounder using thin-film EL devices with a ceramic insulating layer

被引：0

作者：

Minami, Tadatsugu ^{[1
]}

Miyata, Toshihiro ^{[1
]}

Kitamura, Kentaro ^{[1
]}

Takata, Shinzo ^{[1
]}

Fukuda, Ichiro ^{[1
]}

机构：

[1] Kanazawa Inst of Technology, Japan

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 1990年 / 29卷 / 02期

关键词：

Barium Titanate - Electroluminescence - Phosphors - Piezoelectric Materials - Zinc Sulfide - Thin Films;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Sound emission has been achieved from an EL device consisting of a ZnS:Mn thin-film phosphor and a thick piezoelectric BaTiO3 ceramic insulator. The BaTiO3 ceramic, serving not only as the insulating layer of the EL device but also as the substrate, functioned as the sounder. A high sound pressure level as well as a high luminance was obtained in the device driven with audio-frequency voltages: above 90 dB in a flat panel speaker composed of four sound-emitting EL devices with a maximum luminance of 8000 cd/m2. Test results have shown that the sound emission is related to the electroluminescence.

引用

页码：315 / 318

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