摘要
采用丝网印刷技术 ,在 Al2 O3陶瓷基板上印刷、高温烧结内电极及绝缘层 ,制备出陶瓷厚膜基板 ,进而制备了新型厚膜电致发光显示器 (TDEL) .整个器件结构为陶瓷基板 /内电极 /厚膜绝缘层 /发光层 /薄膜绝缘层 / ITO透明电极 .测试了器件的阈值电压、亮度与电压、亮度与频率关系 ,并对器件衰减特性进行了分析 .结果显示厚膜电致发光器件比薄膜电致发光器件有更低的阈值电压和较小的介电损耗 。
With screen-printing technique, a ceramic thick film substrate was fabricated by printing and sintering Ag/Pt alloy internal electrodes and high dielectric constant ceramic thick film insulating layer on Al 2O 3 ceramic substrate. Thereby a novel thick dielectric electro-luminescent (TDEL) device was prepared by using the ceramic thick film substrate. The whole structure of the device is ceramic substrate/internal electrodes/thick dielectric film/light-emitting layer/thin dielectric film/ITO. The threshold voltage and the dependence of brightness on voltage and frequency were measured, respectively. The decay characteristic of the device was also analyzed. Result shows that a thick film electroluminescent device has lower threshold voltage and less dielectric wastage than a thin film electroluminescent device. A TDEL device avoids cross phenomenon effectively.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2005年第2期131-133,146,共4页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目 (4 13 0 2 0 60 3 )
关键词
陶瓷厚膜
绝缘层
电致发光
ceramic thick film
insulator layer
electroluminescence
