Patent ID: 8922536
Filing Date: 2014-12-30
Classification: G09G

Abstract:
1. A method for driving a display element including a current-driven light emitting part and a drive circuit, the drive circuit including a write transistor, a drive transistor, and a capacitive part, in the display element, (A-1) one source/drain region of the drive transistor being connected to a first power feed line, (A-2) the other source/drain region of the drive transistor being connected to an anode electrode included in the light emitting part and one electrode of the capacitive part, and forming a second node, (A-3) a gate electrode of the drive transistor being connected to the other source/drain region of the write transistor and the other electrode of the capacitive part, and forming a first node, (B-1) one source/drain region of the write transistor being connected to a data line, (B-2) a gate electrode of the write transistor being connected to a scan line, and (C-1) a cathode electrode included in the light emitting part being connected to a second power feed line, the method comprising the steps of: executing threshold voltage cancel processing of changing potential of the second node toward potential obtained by subtracting threshold voltage of the drive transistor from potential of the first node in a state in which the potential of the first node is kept; and executing write processing of applying a video signal from the data line to the first node via the write transistor turned to an on-state by a scan signal from the scan line, wherein the threshold voltage cancel processing is executed in a state in which a first reference voltage is applied from the second power feed line to the cathode electrode included in the light emitting part, and subsequently the write processing is executed in a state in which a second reference voltage lower than the first reference voltage is applied from the second power feed line to the cathode electrode.