粉末厚膜(交)直流电致发光(DCEL)平板显示器

Powder Thick Film AC/DC Electroluminescence Flat Display

我国是继英国之后世界上第二个独立自主研究并全面掌握DCEL技术的国家,其基本技术已赶上英国,达到世界先进水平。近年来,我国在DCEL核心关键技术———包铜和形成工艺方面又开发出独特的新工艺,使生产效率和DCEL显示器最大单元发光面积均提高十至几十倍,彻底克服了对产业化的严重制约,处于世界领先水平。我国首先发现并深入研究了DCEL器件的ACEL特性,其ACEL发光亮度在市电工作条件下比传统ACEL器件提高十倍以上。深入地研究了DCEL形成过程的物理图像和机制、亮度衰减特性;发光区的成因及其随机性;DCEL器件在交流(AC)电压下的光电特性等。1985年完成世界上首台计算机控制大面积(1m2)镶嵌式DCEL终端显示器,并成功用于全国人大常委会会务信息显示;同年还完成我国首台高分辨率便携式固体平板化DCEL微机终端显示器。利用DCEL器件的ACEL特性还成功开发出多种非矩阵DCEL显示器。

The studying results of AC/DC Electroluminescence(EL) phosphors, devices, physical mechanism and application in China are summarized. China is the country that study and know well AC/DC EL technology independently after England. The main arts of AC/DC EL in China have caught up with advanced level in the world. Recent years, a new method of cupper coating and a unique forming art have been put forward successfully. The production efficiency of cupper coating is raised above 10 times and the panels with single emissive area of 1 200cm2 can be formed only in one minute. The physical mechanism of forming process and the decay of luminance, the reason of forming emission region and its random were studied. The characteristics of AC/DC EL panel under AC voltage were studied thoroughly. Under AC voltage of 110V, 60Hz operation, the brightness of AC/DC EL panel is higher above 10 times than that of conventional powder ACEL panel. A computer displays of 1m2 and a high resolution portable computer display had been developed in 1985. By means of ACEL characteristics of AC/DC EL panel, many kinds of display with high brightness and long lifetime under AC commercial power operation have been developed.