Pixel circuit and display device

摘要

A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain is connected to a power source potential, a capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.

主权项

1. A display device, comprising:
a plurality of pixel circuits; a plurality of power supply lines; a plurality of reference potential lines; and a plurality of signal lines, one of the plurality of pixel circuits including: a capacitive element having an electrode; a drive transistor configured to supply a drive current to an electro-optic element in accordance with a voltage stored in the capacitive element; a first thin film transistor (TFT) connected between one of the reference potential lines and the electrode of said capacitive element; a second TFT configured to sample a signal voltage from one of the signal lines; and a third TFT connected between the electro-optical element and the drive transistor, said third TFT being directly connected between said drive transistor and an anode of said electro-optic element, wherein the first TFT is configured to supply a potential from one of the reference potential lines to the electrode of the capacitive element while the electro-optic element is electrically disconnected from the drive transistor by the third TFT, and said one of the plurality of pixel circuits is configured to be driven such that the first TFT is set to a conductive state within at least a part of a period during which the second TFT is set to a non-conductive state.