THIN FILM TRANSISTOR CIRCUIT, LIGHT EMITTING DISPLAY DEVICE, AND DRIVING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To suppress influence of an electric stress on TFT characteristics when using a TFT.

SOLUTION: The light emitting display device comprises an organic EL device (OLED) and a driving circuit for driving the organic EL device. The driving circuit comprises a plurality of pixels having a thin film transistor TFT 1 with the threshold voltage changeable reversibly by an electric stress applied between a gate terminal and a source terminal, and a voltage applying means for setting the gate potential of the thin film transistor TFT 1 higher than that of the source potential. The voltage applying means applies an electric stress between the gate terminal and the source terminal when the thin film transistor is not driven so that the thin film transistor is driven in an area with the threshold voltage saturated with respect to the electric stress.

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