Light emitting device

摘要

An object of the present invention is to provide a light emitting device that is able to suppress power consumption while a balance of white light is kept, without making a configuration of a power source circuit complicated. A power source potential corresponding to each color of a light emitting element is used as a higher electric potential of a video signal and an electric potential of a power source line in the case that a transistor for controlling a supply of electric current to the light emitting element is a p-channel TFT. Conversely, a power source potential corresponding to each color of a light emitting element is used as a lower electric potential of a video signal and an electric potential of a power source line in the case that a transistor for controlling a supply of electric current to the light emitting element is an n-channel TFT.

主权项

1. An active matrix light emitting device comprising:
a source line driving circuit; a level shifter comprised in the source line driving circuit; a wiring configured to supply the source line driving circuit and the level shifter with a power source potential; a pixel portion comprising:
a light emitting element; anda transistor electrically connected to the light emitting element;a source line electrically connecting the level shifter to the pixel portion; anda power source line electrically connecting the source line driving circuit to the pixel portion, wherein the level shifter is configured to set one of a higher electric potential and a lower electric potential of a video signal input into the source line driving circuit to the power source potential, and wherein the power source line is configured to be set at the power source potential.