| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of driving a light emitting device, in which when an n-type driving TFT is connected to an anode of a light emitting element or a p-type driving TFT is connected to a cathode thereof, the driving TFT operates in a saturation region and a desired gray scale level can be displayed in accordance with a video signal, and to provide a light emitting device using the driving method.SOLUTION: According to the present invention, voltage of reverse-direction bias is applied to a light emitting element and a driving TFT connected in series when a potential having image information is given to a gate of the driving TFT in accordance with a video signal, and voltage of forward-direction bias is applied to the light emitting element and the driving TFT when display is performed with a pixel in accordance with the video signal. |
