Pixel circuit and display device

A display device comprising:

• a plurality of first potential lines;
• a plurality of second potential lines;
• and
• a plurality of pixel circuits,
• wherein one of the pixel circuits includes
• an electro-optic element;
• a drive transistor;
• a capacitive element;
• a first circuit configured to connect a first terminal of said capacitive element to one of said second potential lines while said electro-optic element is disconnected from said drive transistor, said first circuit being directly connected between said first terminal of said capacitive element and said one of said second potential lines;
• a second circuit configure to sample a signal voltage from a signal line;
• and
• a third circuit configured to connect said drive transistor to said electro-optic element,
• wherein said drive transistor is configured to control said current flowing to said electro-optic element in accordance with a voltage stored in said capacitive element when said third circuit is set in a conductive state,
• said first circuit is controlled by a control signal supplied via only one scan line, and
• wherein said first circuit is configured to supply a predetermined potential from said one of said second potential lines to said first terminal of said capacitive element while said electro-optic element is electrically disconnected from said drive transistor by said third circuit, and said first circuit and said second circuit are configured to be sequentially set in a conductive state while said third circuit is set in a cut-off state.

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 and the second TFT are sequentially turned on while the third TFT is being turned off.

A display device comprising:

• a plurality of pixel circuits;
• a plurality of power supply lines extending in a first direction;
• a plurality of reference potential lines extending in the first direction;
• 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 said 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-optic 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 and the second TFT are sequentially turned on while the third TFT is being turned off, and
• wherein each of first ends and second ends of the reference potential lines are respectively connected in common.