Active matrix electroluminescent display with two tft's and storage capacitor

摘要

A display apparatus comprising a plurality of scanning lines; a plurality of data lines intersecting said plurality of scanning lines; a plurality of common power supply lines; and a plurality of pixels formed by said scanning lines and said data lines in a matrix, each of said pixels including: a first transistor having a first gate electrode connected to one of said plurality of scanning lines; a holding capacitor arranged to hold a signal supplied through one of said plurality of data lines via said first transistor; a second transistor having a second gate electrode connected to the holding capacitor; and a luminescent element provided between a pixel electrode corresponding to each of said pixels and an opposite electrode opposed to said pixels, the luminescent element being disposed in series with the second transistor, the luminescent element being able to emit light due to driving current that flows between said pixel electrode and said opposite electrode when said pixel electrode is electrically connected to one of said common power supply lines through said second transistor; wherein said second transistor is of N channel type and a potential of said common power supply line is set at a lower level than a potential of said opposite electrode, and the potential of the gate electrode of said second transistor when said pixel electrode is electrically connected to said common power supply line is lower than the potential of the opposite electrode and higher than the potential of said common power supply line.