| abstract |
The present invention includes a pixel including a load, a transistor that controls a current value supplied to the load, a storage capacitor, and first to fourth switches, wherein after the storage capacitor is maintained at a threshold voltage of the transistor The pixel input corresponds to the potential of the video signal, and the voltage obtained by adding the potential to the threshold voltage is maintained to suppress the unevenness of the current value caused by the unevenness of the threshold voltage of the transistor. Therefore, it is possible to supply a required current to a load such as a light-emitting element. Further, a display device having a high duty ratio can be provided by changing the potential of the power supply line. |