Patent ID: 8659515
Filing Date: 2014-02-25
Classification: G09G

Abstract:
1. A display device comprising: rows of scanning lines; columns of signal lines; pixels arranged in rows and columns; and power lines, wherein each of the pixels includes a light-emitting device, a sampling transistor providing a reference potential and a signal potential from one of the signal lines, a driving transistor, and a retaining capacitor, the driving transistor is connected between one of the power lines and the light-emitting device, a first control signal is output to a gate of the sampling transistor to turn on the sampling transistor while the one of the signal lines is at the reference potential, to correct a threshold voltage for the driving transistor, a second control signal is output to the gate of the sampling transistor to turn on the sampling transistor while the one of the signal lines is at the signal potential, the sampling transistor being part of a current path that provides the signal potential to a gate of the driving transistor, the second control signal having a pulse width that is shorter than a time interval for which the one of the signal lines is at the signal potential, and an adjustment voltage is subtracted from a voltage retained in the retaining capacitor simultaneously with outputting the second control signal to provide the signal potential to the gate of the driving transistor, the adjustment voltage being subtracted from the voltage due to a current through the driving transistor.