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.