Patent ID: 8698714
Filing Date: 2014-04-15
Classification: G09G

Abstract:
1. An electro-optical device comprising a scanning line for supplying a scanning signal; a data line for supplying a data signal, the data line intersecting the scanning line; a pixel circuit arranged to correspond to intersection of the scanning line and the data line; a power supply line for supplying a first voltage to the pixel circuit; and a feed line for supplying a second voltage to the pixel circuit, wherein the pixel circuit comprises: an electro-optical element as a driven element, the electro-optical element including a first electrode and a second electrode; a driving transistor for controlling a current flowing into the electro-optical element based on the data signal, the driving transistor being connected between the power supply line and the electro-optical element; a first switching element provided between a gate and a drain of the driving transistor; a capacitive element having a first end connected to the gate of the driving transistor, and a second end; a second switching element configured to apply the second voltage as an initial voltage to the second end of the capacitive element, the second switching element being connected between the feed line and the second end of the capacitive element; a third switching element provided between the data line and the second end of the capacitive element to be turned on in a second period after a first period, the first switching element being directly connected to the gate and the drain of the driving transistor and the first electrode of the electro-optical element being directly connected to a source of the driving transistor; and a fourth switching element being configured to block the current flowing into the electro-optical element, the fourth switching element being directly connected to the driving transistor and the first switching element, wherein the fourth switching element is turned on in a portion of the first period and is turned on in a third period after the second period.