Display apparatus of capacitive light emitting devices

A display apparatus comprising:

• a simple matrix display panel having a plurality of driving lines, a plurality of scanning lines, and a plurality of capacitive light emitting devices connected between said scanning lines and said driving lines at a plurality of crossing positions by said driving lines and said scanning lines;
• scanning period control means for selecting some of said plurality of driving lines in a scanning period in predetermined cyclic period consisting of the scanning period and a resetting period subsequent thereto, selecting one of said plurality of scanning lines in order, connecting current sources to the selected driving lines, and supplying a current in the forward direction to each of the capacitive light emitting devices between said selected driving lines and said selected one scanning line;
• and
• resetting period control means for applying a same electric potential to driving lines to be selected for at least a next scanning period and all of said plurality of scanning lines in said resetting period, thereby discharging charges of the capacitive light emitting devices between the driving lines to be selected and all of said scanning lines,
• wherein a length of the scanning period in said predetermined cyclic period is changed in response to a luminance information command indicative of a display luminance, and the period other than the scanning period in said predetermined cyclic period is set to said resetting period.