The powder electroluminescent panel is a sort of under developing and more perfect solid flat display devices.Research work in this field is in progresses both at home and abroad.And these devices have practically been applied into some areas.Just like the a.c.powder electroluminescent panel (AC-EL)

the d.c. powder electroluminescent panel (DC-EL)

since it is a solid flat display device

has the advantages of large viewing angles

soft light and the ease of being made into a variety of display figures.It's main problem is the need of high driving voltage.The major content of this article is foused on some issues of circuit designing

using the ordinary low voltage ICs.Because of the good characteristics of the threshold voltage of DC-EL devices

it is possible to drive DC-EL alphanumeric panels with a 30 volt TTL decoder by a floating drive technique. Experimental results are satisfactory during half a year's time. Thus

it could be expected that the DC-EL alphanumeric panels will be broadly adopted in some instruments as the display devices.